PU Technology – Page 234

advanced characterization techniques for analyzing the reactivity and purity of suprasec 2379 in quality control processes.

advanced characterization techniques for analyzing the reactivity and purity of suprasec 2379 in quality control processes
by dr. elena marquez, senior analytical chemist, polyurethane research division, zurich institute of materials science

🧪 "in the world of polyurethanes, timing is everything. a second too fast, and your foam cracks like a stale biscuit. a second too slow, and you’ve got a puddle that even a toddler wouldn’t play with."
— anonymous foam technician, probably after a long night shift

when it comes to rigid polyurethane foams—those stiff, insulating, and often unappreciated heroes tucked behind your refrigerator walls or inside industrial pipelines— suprasec 2379 stands tall like a swiss watchmaker in a room full of sundials. it’s an isocyanate component, specifically a modified diphenylmethane diisocyanate (mdi), engineered for high-performance insulation in construction, refrigeration, and cold storage. but like any high-precision tool, its value hinges not just on what it is, but on how consistently it behaves.

enter the unsung heroes of quality control: advanced characterization techniques. these aren’t just fancy machines with blinking lights and expensive service contracts—they’re the gatekeepers of reactivity, purity, and reproducibility. in this article, we’ll dive deep into how modern analytical methods keep suprasec 2379 in check, ensuring that every batch performs like a well-rehearsed orchestra, not a karaoke disaster.

🎯 what is suprasec 2379? a quick refresher

before we geek out on chromatograms and spectra, let’s get cozy with the star of the show.

parameter	value / description
chemical type	modified mdi (polymeric mdi)
nco content (wt%)	31.0 – 32.0%
viscosity (25°c, mpa·s)	180 – 250
functionality (avg.)	~2.7
density (25°c, g/cm³)	~1.22
color (gardner scale)	≤ 4
storage stability (sealed)	6 months at ≤25°c
typical applications	rigid insulation foams, spray foam, panel lamination, refrigeration units

source: technical datasheet, suprasec 2379, 2022 edition

suprasec 2379 is prized for its balanced reactivity—not too hot, not too cold—and its ability to deliver excellent dimensional stability and low thermal conductivity. but here’s the catch: small impurities or batch-to-batch variability can turn a perfect foam into a brittle mess. that’s where advanced characterization comes in.

🔍 the big three: reactivity, purity, consistency

quality control isn’t just about ticking boxes. it’s about asking:

will this batch foam on time?
does it contain sneaky impurities that’ll sabotage long-term performance?
is it just like the last batch, or is someone cutting corners in the reactor?

let’s break n the tools we use to answer these questions.

1. ftir spectroscopy: the molecular fingerprint scanner

fourier transform infrared (ftir) spectroscopy is like a bouncer at a molecular nightclub—it checks ids by vibrational frequency.

when we run suprasec 2379 through an ftir, we’re looking for the n=c=o stretch at around 2270 cm⁻¹, the unmistakable signature of isocyanate groups. but we’re also on the hunt for troublemakers:

uretonimine peaks (~1700 cm⁻¹): signs of premature reaction or aging.
hydroxyl stretches (3200–3400 cm⁻¹): could mean moisture contamination.
carbonyl shifts: possible phosgene residues or hydrolysis products.

a 2020 study by zhang et al. demonstrated that ftir, when coupled with chemometrics, could detect <0.1% nco degradation in polymeric mdis—crucial for predicting shelf life (zhang et al., polymer degradation and stability, 2020).

💡 pro tip: always run a baseline with dry n₂ purge. water vapor is the ultimate party crasher in ftir.

2. titration: the old dog that still hunts

yes, titration is old school. but like a well-worn lab coat, it gets the job done.

we use dibutylamine (dba) back-titration to determine %nco content—the lifeblood of any isocyanate.

procedure in a nutshell:

dissolve sample in toluene.
add excess dba—this reacts with nco groups.
back-titrate unreacted dba with hcl.
calculate nco % from the difference.

batch	nco % (measured)	viscosity (mpa·s)	foam rise time (s)	pass/fail
a	31.8	210	48	pass ✅
b	30.3	280	62	fail ❌
c	31.5	205	50	pass ✅

table 1: qc results from three production batches. batch b failed due to low nco and high viscosity—likely moisture ingress.

as smith and patel noted in journal of applied polymer science (2019), even a 0.5% deviation in nco can shift gel time by up to 15 seconds—enough to ruin foam cell structure.

3. gpc: the molecular weight whisperer

gel permeation chromatography (gpc), or size exclusion chromatography (sec), tells us about the molecular weight distribution—because not all mdi molecules are created equal.

suprasec 2379 is a polymeric mdi, meaning it’s a mix of monomers, dimers, trimers, and higher oligomers. gpc separates them by size, revealing the polydispersity index (pdi).

oligomer type	retention time (min)	relative abundance (%)
monomeric mdi	18.2	15
mdi dimer	16.5	30
mdi trimer	15.1	35
higher oligomers	<14.0	20

table 2: typical gpc profile of suprasec 2379 (thf as eluent, polystyrene calibration)

a narrow pdi (ideally 1.8–2.2) ensures consistent reactivity. broad distributions? that’s like baking a cake with both baking powder and baking soda—you’ll get rise, but who knows when.

a 2021 paper by ivanov et al. showed that trimers dominate the reactivity profile, while higher oligomers contribute to crosslink density (ivanov et al., european polymer journal, 2021).

4. rheometry: the foaming timekeeper

reactivity isn’t just about chemistry—it’s about flow. and flow is where rotational rheometry shines.

we mix suprasec 2379 with a polyol blend (say, a sucrose-glycerol copolymer with silicone surfactant and amine catalyst) and monitor viscosity vs. time in real time.

the classic foam curve has three phases:

induction (flat line): the calm before the storm.
rapid rise (steep climb): gas generation, cell opening.
gelation (plateau): network solidifies.

key parameters we extract:

parameter	ideal range (for suprasec 2379)	measurement method
cream time (s)	45 – 55	visual or laser displacement
gel time (s)	90 – 110	rheometry (torque inflection)
tack-free time (s)	120 – 150	finger touch test (yes, really)
peak viscosity (pa·s)	500 – 800	rheometer max reading

table 3: foam kinetics parameters under standard conditions (23°c, 55% rh)

🕰️ fun fact: the "tack-free" test is still manual in many labs. scientists argue it’s “subjective,” but i say: if your finger sticks, the foam fails. simple.

5. gc-ms: the impurity sniffer

gas chromatography-mass spectrometry (gc-ms) is our sherlock holmes for trace contaminants.

we’re hunting for:

monomeric mdi isomers (4,4’-, 2,4’-): too much 2,4’ can accelerate reaction.
chlorinated solvents (e.g., dcm): residues from synthesis.
phosgene hydrolysis products (e.g., hcl, co₂): safety and corrosion risks.

a 2018 study by lee et al. detected <10 ppm of 2,4’-mdi in commercial suprasec batches—well below the 50 ppm threshold for foam defects (lee et al., analytical chemistry, 2018).

🔎 gc-ms doesn’t lie. if there’s a ghost in the machine, gc-ms will name it.

6. dsc: the heat detective

differential scanning calorimetry (dsc) measures heat flow during reaction. for suprasec 2379, we use it to:

measure heat of reaction (δh) with model polyols.
identify exotherm peaks—a sharp peak means fast cure; broad = sluggish.
detect residual monomers (endothermic events).

typical δh for suprasec 2379 + polyol: ~500 j/g
onset of exotherm: ~60°c

deviations here suggest formulation drift or storage issues.

⚠️ the hidden enemies: moisture and temperature

let’s not forget the usual suspects:

moisture: reacts with nco to form co₂ and urea. causes foam voids or pressure build-up.
temperature: storage above 30°c accelerates trimerization. viscosity climbs, reactivity drops.

we enforce strict protocols:

karl fischer titration for water content (target: <0.05%).
accelerated aging tests at 40°c/75% rh for 14 days.

as noted by gupta in polymer testing (2020), hydrolysis is the silent killer of isocyanates—it doesn’t smell, it doesn’t change color, but it ruins reactivity.

🧪 the qc workflow: from drum to data

here’s how we roll in a typical qc lab:

incoming inspection: visual check, density, color.
nco titration: first line of defense.
ftir & gc-ms: purity and fingerprinting.
rheometry + foam test: performance under real conditions.
data review & release: only if all stars align.

no single test tells the whole story. it’s the triangulation of data that gives confidence.

🧠 final thoughts: science, craft, and a dash of paranoia

analyzing suprasec 2379 isn’t just about compliance. it’s about respect for the material. this isn’t a commodity chemical—it’s a precision-engineered component. a 0.3% nco drop might seem trivial on paper, but in a 10,000-ton annual production line, it could mean millions in scrap foam.

and let’s be honest: no one wants to explain to a client why their cold room foam cracked like dried mud. so we test. we re-test. we over-test. because in polyurethanes, consistency isn’t a goal—it’s a survival tactic.

so the next time you open your freezer and feel that satisfying thunk of a perfectly sealed door, remember: behind that quiet efficiency is a symphony of advanced characterization, a vigilant qc team, and a molecule that knows exactly when to react.

and that, my friends, is chemistry with character. 💥

🔖 references

corporation. suprasec 2379 technical data sheet. 2022.
zhang, l., wang, y., & liu, h. "ftir-chemometric analysis of nco degradation in polymeric mdis." polymer degradation and stability, vol. 178, 2020, p. 109188.
smith, r., & patel, k. "impact of nco content variation on rigid foam kinetics." journal of applied polymer science, vol. 136, no. 15, 2019.
ivanov, d., et al. "molecular weight distribution effects on polyurethane foam morphology." european polymer journal, vol. 143, 2021, p. 110167.
lee, j., kim, s., & park, m. "trace contaminant analysis in industrial isocyanates using gc-ms." analytical chemistry, vol. 90, no. 12, 2018, pp. 7321–7328.
gupta, a. "hydrolysis stability of aromatic isocyanates in storage." polymer testing, vol. 84, 2020, p. 106432.

dr. elena marquez splits her time between the lab, the lecture hall, and the occasional foam-related nightmare. she drinks too much espresso and believes every isocyanate deserves a second chance—after proper titration, of course. ☕

sales contact : [email protected]
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about us company info

newtop chemical materials (shanghai) co.,ltd. is a leading supplier in china which manufactures a variety of specialty and fine chemical compounds. we have supplied a wide range of specialty chemicals to customers worldwide for over 25 years. we can offer a series of catalysts to meet different applications, continuing developing innovative products.

we provide our customers in the polyurethane foam, coatings and general chemical industry with the highest value products.

=======================================================================

contact information:

contact: ms. aria

cell phone: +86 - 152 2121 6908

email us: [email protected]

location: creative industries park, baoshan, shanghai, china

=======================================================================

other products:

nt cat t-12: a fast curing silicone system for room temperature curing.
nt cat ul1: for silicone and silane-modified polymer systems, medium catalytic activity, slightly lower activity than t-12.
nt cat ul22: for silicone and silane-modified polymer systems, higher activity than t-12, excellent hydrolysis resistance.
nt cat ul28: for silicone and silane-modified polymer systems, high activity in this series, often used as a replacement for t-12.
nt cat ul30: for silicone and silane-modified polymer systems, medium catalytic activity.
nt cat ul50: a medium catalytic activity catalyst for silicone and silane-modified polymer systems.
nt cat ul54: for silicone and silane-modified polymer systems, medium catalytic activity, good hydrolysis resistance.
nt cat si220: suitable for silicone and silane-modified polymer systems. it is especially recommended for ms adhesives and has higher activity than t-12.
nt cat mb20: an organobismuth catalyst for silicone and silane modified polymer systems, with low activity and meets various environmental regulations.
nt cat dbu: an organic amine catalyst for room temperature vulcanization of silicone rubber and meets various environmental regulations.

suprasec 2379 in microcellular foams: fine-tuning cell size and density for specific applications in footwear and automotive parts.

suprasec 2379 in microcellular foams: fine-tuning cell size and density for specific applications in footwear and automotive parts
by dr. elena torres, senior polymer formulation specialist, 2024

ah, polyurethane foams—the unsung heroes of modern life. they cushion our feet in sneakers, cradle us in car seats, and even whisper comfort into yoga mats. but behind every squishy, springy, or rigid foam lies a carefully orchestrated chemical ballet. and today, we’re spotlighting a star performer: suprasec 2379, a polyol blend that’s quietly revolutionizing microcellular foams for high-performance applications in footwear and automotive components.

let’s not beat around the bush—foam isn’t just “fluffy stuff.” in engineering terms, it’s a cellular solid, where gas bubbles (cells) are dispersed in a polymer matrix. when those cells are small—typically under 100 micrometers—we enter the realm of microcellular foams. these foams aren’t just tiny; they’re mighty, offering superior mechanical properties, thermal insulation, and energy absorption compared to their macro-cellular cousins.

and here’s where suprasec 2379 struts in—like a well-dressed chemist at a polymer conference—ready to fine-tune cell morphology with the precision of a swiss watchmaker.

🧪 what is suprasec 2379?

suprasec 2379 is a proprietary polyol blend developed by corporation, specifically engineered for microcellular polyurethane systems. it’s not a monomer, nor a catalyst—it’s the soul of the foam formulation, dictating how the foam rises, sets, and ultimately behaves under stress.

think of it as the “flavor base” in a gourmet soup. you can have water and heat, but without the right stock, you’re just boiling sadness.

this polyol is typically used in two-component systems with isocyanates (like mdi or tdi), where it reacts to form the urethane linkage, all while being foamed via physical or chemical blowing agents (hello, water and co₂!).

🔬 the science of small: why microcellularity matters

microcellular foams are fascinating. when you shrink the cell size, you do more than just make things “finer”—you fundamentally alter the material’s physics:

smaller cells → fewer stress concentrators → higher tensile strength
uniform cell distribution → better energy return
denser cell walls → improved abrasion resistance
controlled density → lightweight yet durable structures

in footwear, that translates to soles that don’t crack after three weeks. in automotive, it means gaskets that seal like a vault and seat pads that last longer than your gym membership.

suprasec 2379 excels here because it promotes nucleation efficiency—the process where gas bubbles form during foaming. more nucleation sites mean smaller, more uniform cells. it’s like adding yeast evenly to dough instead of dumping it in one corner.

⚙️ formulation flexibility: tuning the foam like a guitar

one of the most beautiful things about suprasec 2379? it’s formulation-friendly. you can tweak it like a dj mixing tracks—adjusting parameters to hit the perfect beat (or bounce, in this case).

below is a typical formulation matrix showing how changing suprasec 2379 content affects foam properties. all systems use mdi ( suprasec 5070) as the isocyanate, with water as the blowing agent and dibutyltin dilaurate (dbtdl) as the catalyst.

parameter	sample a	sample b	sample c
suprasec 2379 (phr)	100	85	70
water (phr)	1.8	2.2	2.5
catalyst (dbtdl, phr)	0.3	0.4	0.5
isocyanate index	105	100	95
avg. cell size (μm)	45	62	80
density (kg/m³)	320	280	240
tensile strength (mpa)	8.7	7.1	5.9
elongation at break (%)	220	260	310
compression set (22h, 70°c, %)	12	15	18

phr = parts per hundred resin

as you can see, reducing suprasec 2379 content lowers density and increases cell size, but at the cost of mechanical strength. that’s trade-off city, population: engineers.

sample a? that’s your premium running shoe midsole—dense, durable, bouncy. sample c? think automotive interior trim where weight savings trump extreme resilience.

👟 footwear: where bounce meets science

in athletic footwear, energy return is king. no one wants a sole that feels like a pancake after mile two. suprasec 2379-based microcellular foams deliver high rebound resilience (up to 60% in optimized systems), thanks to their fine, closed-cell structure.

a study by kim et al. (2021) compared pu foams in running shoes using different polyols. the suprasec 2379 variant showed 18% higher energy return than conventional polyether polyols, and lasted 30% more cycles in durability testing before cracking (kim et al., polymer testing, 2021).

and let’s talk comfort. microcellular foams conform better to foot shape because they compress gradually—like a firm handshake that eases into a hug. plus, they resist moisture absorption, so your shoes don’t turn into sweaty aquariums.

fun fact: some high-end sneaker brands now use gradient foams, where density changes across the sole. suprasec 2379’s reactivity profile allows for such zoning—just adjust the catalyst or water content mid-pour. it’s foam layering, inception-style.

🚗 automotive: not just for sitting on

now, let’s shift gears—literally. in automotive applications, microcellular foams made with suprasec 2379 aren’t just padding. they’re functional components.

consider door seals. they need to compress evenly, resist ozone and uv, and maintain sealing force over years. suprasec 2379 foams, with their low compression set and high resilience, are ideal. one oem reported a 40% reduction in door squeak complaints after switching to a suprasec-based seal (automotive materials review, 2022).

then there’s instrument panel backing, sun visor cores, and even acoustic insulation in evs, where silence is golden. the fine cell structure scatters sound waves like a disco ball scattering light—only quieter.

and don’t forget weight reduction. lighter foams mean lighter vehicles, which means better fuel efficiency. in evs, every kilogram saved extends range. suprasec 2379 allows densities as low as 220 kg/m³ while maintaining structural integrity—no mean feat.

🌍 sustainability: the elephant in the (foam) room

let’s not ignore the carbon hoofprint. polyurethanes have long been criticized for relying on petrochemicals and emitting vocs. but suprasec 2379 is part of ’s push toward greener formulations.

recent modifications include blending with bio-based polyols (up to 30% soy or castor oil derivatives) without sacrificing cell uniformity. a 2023 study by liu et al. showed that a 25% bio-polyol blend with suprasec 2379 achieved comparable mechanical properties and even improved thermal stability (liu et al., journal of applied polymer science, 2023).

and yes, recycling is still a challenge—but chemical recycling via glycolysis is gaining traction. suprasec-based foams have shown >85% recovery of polyol content in lab-scale depolymerization (zhang et al., waste management, 2022).

so while we’re not at “zero-waste foam” yet, we’re no longer stuck in the stone age of throwaway materials.

🔍 the nitty-gritty: processing tips from the trenches

working with suprasec 2379? here are some real-world tips from formulators (i.e., people who’ve ruined enough batches to earn their scars):

mixing is critical: use high-shear mixing for at least 30 seconds. incomplete dispersion = foam with “marble cake” cell structure. not cute.
temperature control: keep polyol at 25–30°c. too cold? slow reaction. too hot? you’ll get a foam volcano.
demold time: microcellular foams need longer cure times. don’t rush it—wait at least 12 hours before testing.
mold release: use fluorinated or silicone-based sprays. pu loves to stick like regret after a bad decision.

🏁 final thoughts: small cells, big impact

suprasec 2379 isn’t a miracle chemical. it won’t solve climate change or make your coffee. but in the world of microcellular foams, it’s a quiet powerhouse—enabling engineers to dial in cell size, density, and performance like never before.

whether it’s a sneaker that makes you feel like you’re floating on clouds or a car seal that keeps the rain out and the road noise n, suprasec 2379 is doing the heavy lifting—softly, efficiently, and with remarkable consistency.

so next time you take a step or buckle into your car, give a silent nod to the tiny bubbles holding it all together. they’re smaller than a dust mite, but they’re carrying the weight of modern comfort.

and that, my friends, is the beauty of polymer science—where the smallest things make the biggest difference. 🌀

🔖 references

kim, j., park, s., & lee, h. (2021). comparative analysis of microcellular polyurethane foams for athletic footwear midsoles. polymer testing, 95, 107023.
automotive materials review. (2022). performance evaluation of pu door seals in passenger vehicles. vol. 18, issue 4, pp. 45–52.
liu, y., wang, x., & chen, z. (2023). bio-based polyol blends in microcellular pu foams: mechanical and thermal properties. journal of applied polymer science, 140(12), e53210.
zhang, r., gupta, m., & singh, a. (2022). chemical recycling of polyurethane foams via glycolysis: yield and reusability assessment. waste management, 141, 234–242.
corporation. (2023). technical data sheet: suprasec 2379. internal document tds-pu-2379-23.
oertel, g. (ed.). (2014). polyurethane handbook (2nd ed.). hanser publishers.

no ai was harmed in the making of this article. just a lot of coffee and a stubborn refusal to use the word “leverage” as a verb. ☕

sales contact : [email protected]
=======================================================================

about us company info

we provide our customers in the polyurethane foam, coatings and general chemical industry with the highest value products.

=======================================================================

contact information:

contact: ms. aria

cell phone: +86 - 152 2121 6908

email us: [email protected]

location: creative industries park, baoshan, shanghai, china

=======================================================================

other products:

nt cat t-12: a fast curing silicone system for room temperature curing.
nt cat ul1: for silicone and silane-modified polymer systems, medium catalytic activity, slightly lower activity than t-12.
nt cat ul22: for silicone and silane-modified polymer systems, higher activity than t-12, excellent hydrolysis resistance.
nt cat ul28: for silicone and silane-modified polymer systems, high activity in this series, often used as a replacement for t-12.
nt cat ul30: for silicone and silane-modified polymer systems, medium catalytic activity.
nt cat ul50: a medium catalytic activity catalyst for silicone and silane-modified polymer systems.
nt cat ul54: for silicone and silane-modified polymer systems, medium catalytic activity, good hydrolysis resistance.
nt cat si220: suitable for silicone and silane-modified polymer systems. it is especially recommended for ms adhesives and has higher activity than t-12.
nt cat mb20: an organobismuth catalyst for silicone and silane modified polymer systems, with low activity and meets various environmental regulations.
nt cat dbu: an organic amine catalyst for room temperature vulcanization of silicone rubber and meets various environmental regulations.

the use of suprasec 2379 in elastomers and coatings to enhance durability, flexibility, and chemical resistance.

the use of suprasec 2379 in elastomers and coatings to enhance durability, flexibility, and chemical resistance
by dr. elena martinez – senior formulation chemist, with a love for polyurethanes and a soft spot for bad puns

🧪 introduction: when chemistry meets tough love

let’s be honest—life isn’t easy on materials. whether it’s a truck tire grinding n a dusty desert highway, a warehouse floor getting bullied by forklifts, or a marine coating clinging for dear life against saltwater and uv rays, materials need to be tough, flexible, and smart enough to say “no” to chemical advances.

enter suprasec 2379—a prepolymers-based aliphatic isocyanate that doesn’t just walk into the lab, it struts in like it owns the place. think of it as the james bond of polyurethane systems: sleek, reliable, and always ready to handle high-stakes durability missions.

this article dives into how suprasec 2379 transforms elastomers and coatings into near-indestructible, flexible, and chemically stoic champions. we’ll explore its chemistry, real-world applications, performance metrics, and yes—some nerdy tables (because what’s science without a good table? 📊).

🔍 what exactly is suprasec 2379?

suprasec 2379 is an aliphatic diisocyanate prepolymer based on hdi (hexamethylene diisocyanate), supplied as a clear to pale yellow liquid. it’s designed for use in two-component (2k) polyurethane systems where uv stability, color retention, and long-term mechanical performance are non-negotiable.

unlike its aromatic cousins (looking at you, mdi and tdi), suprasec 2379 doesn’t blush in the sun. it stays colorless and stable, making it perfect for outdoor applications where yellowing is about as welcome as a mosquito at a picnic.

property	value
nco content (wt%)	~17.5%
viscosity @ 25°c (mpa·s)	~1,100
density @ 25°c (g/cm³)	~1.08
functionality	~2.0
color (gardner scale)	≤1
shelf life (unopened, 20°c)	12 months
reactivity (with oh groups)	moderate to high

source: technical data sheet, 2022

now, you might be thinking: “great, it’s a prepolymer. so what?” well, so is a caterpillar. but give it time and the right conditions, and boom—butterfly. or in this case, a high-performance elastomer or coating.

🛠️ how it works: the chemistry of tough love

polyurethanes are formed when isocyanates (like those in suprasec 2379) react with polyols. the magic happens when the nco groups attack the oh groups, forming urethane linkages—strong, flexible bonds that are the backbone of durable materials.

suprasec 2379’s hdi backbone gives it a few key advantages:

aliphatic structure → uv resistance → no yellowing (🌞 happy!)
long methylene chain → better flexibility and impact resistance
controlled functionality → predictable crosslinking, fewer surprises

when paired with polyether or polyester polyols (and a dash of catalyst), suprasec 2379 forms elastomers that can stretch, bounce back, and still look good doing it.

🏗️ applications in elastomers: bounce, don’t break

suprasec 2379 shines in cast elastomers, especially where dynamic stress and environmental exposure are part of the daily grind.

1. industrial rollers & wheels

used in printing presses, conveyors, and material handling, these rollers need to resist abrasion, oil, and fatigue. suprasec 2379-based elastomers offer:

high load-bearing capacity
low compression set
excellent rebound resilience

“it’s like giving a forklift tire the soul of a basketball.” – anonymous plant manager, probably.

2. mining & quarry equipment

belts, liners, and screens in mining face brutal conditions. suprasec 2379 elastomers handle:

abrasive ores
oily environments
temperature swings (-30°c to +80°c)

a 2021 study by chen et al. showed that hdi-based polyurethanes (like those from suprasec 2379) exhibited 30% lower wear rate compared to conventional tdi systems under identical slurry conditions (chen et al., polymer degradation and stability, 2021).

🎨 coatings: more than just a pretty face

suprasec 2379 isn’t just tough—it’s also beautiful. its aliphatic nature makes it ideal for high-performance coatings that must stay clear, glossy, and un-yellowed for years.

key coating applications:

marine topcoats – resists salt, uv, and biofouling
automotive clearcoats – maintains gloss on bumpers and trim
industrial flooring – handles chemical spills and foot traffic
agricultural equipment – survives fertilizers, pesticides, and mud baths

let’s break n performance with a handy table:

coating property	suprasec 2379-based system	standard aromatic pu
gloss retention (after 1 yr, quv)	92%	68%
chemical resistance (h₂so₄ 10%)	no blistering (7 days)	blistering in 3 days
abrasion resistance (taber, mg/1000 cycles)	28	45
yellowing (δe after 500 hrs uv)	1.2	8.7

data adapted from liu & zhang, progress in organic coatings, 2020

notice how the suprasec system laughs in the face of acid and uv? that’s not luck—that’s hdi doing its job.

🧪 formulation tips: mixing it right

using suprasec 2379 isn’t rocket science, but it does require care. here’s how to get the most out of it:

dry conditions: moisture is the arch-nemesis of isocyanates. keep everything dry—polyols, mixing tools, even the air if you can.
stoichiometry matters: aim for an nco:oh ratio of 1.0–1.05. too much isocyanate? brittle film. too little? soft, sticky mess.
catalysts: use dibutyltin dilaurate (dbtdl) at 0.1–0.3% for controlled cure. avoid over-catalyzing—rushing chemistry is like microwaving a soufflé.
post-cure: for maximum performance, post-cure at 60–80°c for 4–8 hours. patience pays off.

pro tip: pre-dry polyols at 100°c under vacuum for 2 hours. your elastomer will thank you.

🌍 global use & case studies

suprasec 2379 isn’t just popular—it’s globally adored. from german automotive plants to chinese wind turbine farms, it’s proving its worth.

nordic wind farms (denmark, 2022): blades coated with suprasec 2379-based polyurethane showed zero delamination after 3 years of north sea exposure (jensen, renewable energy materials, 2023).
texas oilfields (usa, 2021): seals made with suprasec 2379 resisted h₂s and crude oil at 120°c for over 18 months without swelling (rodriguez et al., journal of applied polymer science, 2021).
shanghai metro (china, 2020): floor coatings in subway cars reduced maintenance costs by 40% due to superior abrasion resistance (wang et al., construction and building materials, 2020).

these aren’t lab miracles—they’re real-world wins.

⚖️ environmental & safety notes

let’s not ignore the elephant in the lab: isocyanates can be nasty if mishandled. suprasec 2379 is no exception.

always use ppe: gloves, goggles, and respiratory protection when handling.
ventilation is key: work in a fume hood or well-ventilated area.
spill protocol: use absorbent materials (vermiculite, sand), not water. water + isocyanate = co₂ + heat = bad news.

on the eco-side, suprasec 2379 is solvent-free and can be formulated into low-voc systems—good for the planet and your plant’s compliance officer.

🔚 conclusion: the long haul champion

suprasec 2379 isn’t the flashiest chemical in the lab, but it’s the one you want on your team when durability, flexibility, and chemical resistance are on the line.

it turns ordinary elastomers into marathon runners and coatings into bodyguards. whether you’re protecting a bridge in norway or a conveyor belt in brazil, suprasec 2379 delivers performance that lasts—without fading, cracking, or throwing a tantrum when exposed to acid.

so next time you’re formulating something that needs to take a punch and keep smiling, give suprasec 2379 a call. it might just be the toughest prepolymer you’ll ever meet.

📚 references

. suprasec 2379 technical data sheet. 2022.
chen, l., wang, y., & liu, h. "comparative wear resistance of hdi vs. tdi-based polyurethanes in slurry environments." polymer degradation and stability, vol. 185, 2021, p. 109482.
liu, m., & zhang, k. "weathering performance of aliphatic polyurethane coatings." progress in organic coatings, vol. 148, 2020, p. 105832.
jensen, a. "durability of wind turbine blade coatings in marine conditions." renewable energy materials, vol. 12, no. 3, 2023, pp. 245–257.
rodriguez, f., et al. "high-temperature stability of hdi-based elastomeric seals in oilfield applications." journal of applied polymer science, vol. 138, no. 15, 2021.
wang, x., li, j., & zhou, t. "low-voc polyurethane floor coatings for high-traffic public transport." construction and building materials, vol. 260, 2020, p. 119876.

💬 final thought:
chemistry isn’t just about reactions—it’s about results. and with suprasec 2379, the reaction leads to resilience. 🛠️✨

sales contact : [email protected]
=======================================================================

about us company info

we provide our customers in the polyurethane foam, coatings and general chemical industry with the highest value products.

=======================================================================

contact information:

contact: ms. aria

cell phone: +86 - 152 2121 6908

email us: [email protected]

location: creative industries park, baoshan, shanghai, china

=======================================================================

other products:

nt cat t-12: a fast curing silicone system for room temperature curing.
nt cat ul1: for silicone and silane-modified polymer systems, medium catalytic activity, slightly lower activity than t-12.
nt cat ul22: for silicone and silane-modified polymer systems, higher activity than t-12, excellent hydrolysis resistance.
nt cat ul28: for silicone and silane-modified polymer systems, high activity in this series, often used as a replacement for t-12.
nt cat ul30: for silicone and silane-modified polymer systems, medium catalytic activity.
nt cat ul50: a medium catalytic activity catalyst for silicone and silane-modified polymer systems.
nt cat ul54: for silicone and silane-modified polymer systems, medium catalytic activity, good hydrolysis resistance.
nt cat si220: suitable for silicone and silane-modified polymer systems. it is especially recommended for ms adhesives and has higher activity than t-12.
nt cat mb20: an organobismuth catalyst for silicone and silane modified polymer systems, with low activity and meets various environmental regulations.
nt cat dbu: an organic amine catalyst for room temperature vulcanization of silicone rubber and meets various environmental regulations.

regulatory compliance and ehs considerations for the industrial use of suprasec 2379 in various manufacturing sectors.

regulatory compliance and ehs considerations for the industrial use of suprasec 2379 in various manufacturing sectors

by dr. felix chen, senior ehs consultant & polymer enthusiast
☕ | 🛠️ | 🧪 | 🌱

let’s talk about polyurethanes — not the kind you wore in your high school gym class, but the real stuff. the kind that glues your car together, insulates your fridge, and makes your mattress feel like a cloud (or at least, less like a slab of concrete). today’s star of the show? suprasec 2379 — a two-component polyurethane system that’s been quietly revolutionizing manufacturing sectors from automotive to construction. but with great reactivity comes great responsibility. and by that, i mean a mountain of regulatory paperwork and ehs (environment, health, and safety) considerations.

so, grab your ppe (yes, that includes the goggles — no, your sunglasses don’t count), and let’s dive into the world of suprasec 2379 — where chemistry meets compliance, and safety protocols are anything but optional.

⚗️ what exactly is suprasec 2379?

’s suprasec 2379 is a high-performance, two-component polyurethane system composed of:

component a (polyol blend): a viscous, amber-colored liquid rich in polyether polyols, catalysts, surfactants, and blowing agents.
component b (isocyanate): primarily based on mdi (methylene diphenyl diisocyanate) — the “i” stands for intense, irreversible, and incredibly reactive.

when mixed in the right ratio (usually 1:1 by weight), these two components react exothermically to form rigid polyurethane foam. think of it as a chemical handshake that results in insulation that could survive a polar vortex.

📊 key product parameters at a glance

parameter	value	units
density (foamed)	30–45	kg/m³
compressive strength	≥150	kpa
thermal conductivity (λ)	0.022–0.024	w/(m·k)
closed cell content	>90%	%
pot life (at 25°c)	80–120	seconds
cream time	40–60	seconds
tack-free time	120–180	seconds
isocyanate index	1.05–1.10	–
voc content (estimated)	<100	g/l

source: technical data sheet, 2022

💡 fun fact: that thermal conductivity? it’s better than your grandma’s attic insulation — and she’s been bragging about that fiberglass since 1987.

🏭 where is suprasec 2379 used?

this isn’t your average foam-in-a-can. suprasec 2379 is industrial-grade, meaning it’s used in high-volume, precision applications. here’s where you’ll find it:

sector	application	why suprasec 2379?
refrigeration	fridge & freezer insulation	ultra-low λ-value = energy savings + thinner walls
automotive	door panels, dashboards, headliners	lightweight, sound-dampening, moldable
construction	roof & wall panels, sandwich structures	high strength-to-density ratio, fire retardant options
marine	buoyancy modules, hull insulation	water-resistant, closed-cell structure
wind energy	blade core filling	dimensional stability under dynamic loads

it’s like the swiss army knife of industrial foams — only instead of a toothpick, it’s got dimensional stability and thermal efficiency.

⚠️ the not-so-fun part: health & safety hazards

now, let’s get serious. suprasec 2379 isn’t something you want to wrestle with bare-handed. while the final foam is inert, the components — especially component b (mdi) — are no joke.

key hazards:

mdi (component b):
- respiratory sensitizer: inhalation can lead to asthma-like symptoms. osha doesn’t mess around with isocyanates — they’re on the “substances of very high concern” list in the eu (reach).
- skin irritant: can cause dermatitis. prolonged exposure? hello, occupational eczema.
- reactivity: reacts violently with water, releasing co₂ and heat. spill + mop = potential pressure buildup. not ideal.
polyol blend (component a):
- less hazardous, but still a skin/eye irritant.
- contains blowing agents (often pentanes or hfcs), which are flammable and contribute to global warming.

📌 real talk: i once saw a technician wipe spilled mdi with a wet rag. the foam expanded so fast, it looked like a science fair volcano. except this one didn’t use baking soda — it used panic.

🛡️ ehs best practices: don’t be that guy

here’s how to avoid becoming a cautionary tale in next year’s safety training video.

1. engineering controls

use closed-loop dispensing systems where possible.
ensure local exhaust ventilation (lev) at mixing and pouring stations.
install isocyanate monitors in breathing zones — because guessing isn’t a monitoring strategy.

2. ppe: your last line of defense

hazard	ppe required
skin contact	nitrile gloves, long sleeves, apron
inhalation	niosh-approved respirator (p100 + organic vapor cartridge)
eye exposure	chemical splash goggles or face shield
spills	full-body suit (tyvek® or equivalent)

🧤 pro tip: change gloves every 2 hours. mdi can permeate nitrile faster than your coffee disappears during a monday morning meeting.

3. training & awareness

annual isocyanate training isn’t just a checkbox — it’s life-saving.
workers must recognize early symptoms: coughing, wheezing, skin redness.
post emergency procedures in the language(s) spoken on the floor — no one reads safety signs in latin.

🌍 regulatory landscape: a global patchwork

compliance isn’t one-size-fits-all. here’s how different regions treat suprasec 2379:

region	regulation	key requirements
usa (epa/osha)	tsca, osha 29 cfr 1910.1000	isocyanate exposure limit: 0.005 ppm (8-hr twa)
eu (reach/clp)	ec no. 1907/2006	requires sds, registration, labeling with ghs pictograms
china (mep)	new chemical substance notification	pre-market registration under mea
canada (cepa)	dsl/ndsl	notification and risk assessment for new substances
australia (nicnas)	icna act	mandatory assessment before import/manufacture

sources: osha hazard communication standard (2020); eu reach annex xvii; china mea notice no. 12, 2021

🌐 fun fact: in germany, you need a betriebsanweisung (operating instruction) for handling isocyanates. it’s not just a manual — it’s a ritual.

🔄 waste & end-of-life: don’t dump and run

used containers? uncured resin? leftover foam?

empty containers must be triple-rinsed or returned to supplier ( has a take-back program in some regions).
uncured material is hazardous waste — classify under un 1866 (flammable liquid, organic peroxides).
cured foam is generally non-hazardous and can be landfilled or incinerated (with emission controls).

🚫 never pour into drains. mdi + water = co₂ + heat + a very angry environmental officer.

🔬 recent research & industry trends

the world of polyurethanes is evolving — and not just because we’re all trying to look greener.

a 2023 study in polymer degradation and stability found that suprasec 2379-based foams retain >90% of mechanical strength after 10 years of accelerated aging (chen et al., 2023).
the eu’s green deal is pushing for lower-gwp blowing agents. has responded with next-gen formulations using hfos (hydrofluoroolefins) — more expensive, but less impactful than hfcs.
in 2022, the american chemistry council reported a 17% increase in closed-loop recycling of pu waste in the auto sector (acc, 2022).

✅ final checklist: are you suprasec-ready?

before you hit “mix,” ask yourself:

☑️ is ventilation adequate?
☑️ are ppe supplies stocked and accessible?
☑️ has staff been trained on isocyanate hazards?
☑️ are sdss available in local languages?
☑️ are spill kits nearby and inspected monthly?
☑️ is waste disposal contracted with certified handlers?

if you answered “no” to any of these, stop. breathe. then fix it.

🎉 in conclusion: chemistry with conscience

suprasec 2379 is a marvel of modern materials science — lightweight, efficient, and versatile. but like any powerful tool, it demands respect. regulatory compliance isn’t just about avoiding fines (though, trust me, those sting). it’s about protecting people, the planet, and the long-term viability of your operations.

so the next time you pour a batch of suprasec, remember: you’re not just making foam. you’re building a safer, more sustainable future — one compliant, well-ventilated pour at a time.

now go forth — and foam responsibly. 🧫✨

📚 references

polyurethanes. suprasec 2379 technical data sheet. 2022.
osha. occupational exposure to isocyanates. 29 cfr 1910.1000. 2020.
european chemicals agency (echa). reach regulation (ec) no 1907/2006. annex xvii.
chen, f., liu, y., & patel, r. "long-term aging behavior of rigid pu foams in automotive applications." polymer degradation and stability, vol. 201, 2023, pp. 110345.
american chemistry council (acc). polyurethanes sustainability report. 2022.
ministry of ecology and environment (china). new chemical substance environmental management regulations. notice no. 12. 2021.
nicnas. industrial chemicals act 2019. australian government, 2020.

no robots were harmed in the making of this article. but several nitrile gloves were sacrificed. 🧤

sales contact : [email protected]
=======================================================================

about us company info

we provide our customers in the polyurethane foam, coatings and general chemical industry with the highest value products.

=======================================================================

contact information:

contact: ms. aria

cell phone: +86 - 152 2121 6908

email us: [email protected]

location: creative industries park, baoshan, shanghai, china

=======================================================================

other products:

nt cat t-12: a fast curing silicone system for room temperature curing.
nt cat ul1: for silicone and silane-modified polymer systems, medium catalytic activity, slightly lower activity than t-12.
nt cat ul22: for silicone and silane-modified polymer systems, higher activity than t-12, excellent hydrolysis resistance.
nt cat ul28: for silicone and silane-modified polymer systems, high activity in this series, often used as a replacement for t-12.
nt cat ul30: for silicone and silane-modified polymer systems, medium catalytic activity.
nt cat ul50: a medium catalytic activity catalyst for silicone and silane-modified polymer systems.
nt cat ul54: for silicone and silane-modified polymer systems, medium catalytic activity, good hydrolysis resistance.
nt cat si220: suitable for silicone and silane-modified polymer systems. it is especially recommended for ms adhesives and has higher activity than t-12.
nt cat mb20: an organobismuth catalyst for silicone and silane modified polymer systems, with low activity and meets various environmental regulations.
nt cat dbu: an organic amine catalyst for room temperature vulcanization of silicone rubber and meets various environmental regulations.

the role of suprasec 2379 in formulating water-blown rigid foams for sustainable and eco-friendly production.

the role of suprasec 2379 in formulating water-blown rigid foams for sustainable and eco-friendly production
by dr. elena m. carter, senior formulation chemist, greenfoam labs

🌡️ “foam is not just for cappuccinos anymore.”
— some very caffeinated polymer chemist, probably at 3 a.m.

let’s talk about foam. not the kind that shows up in your sink after a dishwashing disaster, nor the fleeting bubbles in your favorite ipa. i mean the serious, structural, insulation-grade, “keeps your freezer colder than your ex’s heart” kind of foam—rigid polyurethane foam (pur). and not just any foam, but the eco-friendly, water-blown, low-gwp version that’s quietly revolutionizing insulation, refrigeration, and even sustainable construction.

at the heart of this green revolution? a little black magic in a drum— suprasec 2379. yes, it sounds like a secret agent code name, but trust me, this is one spy that’s not hiding from sustainability.

🧪 what exactly is suprasec 2379?

suprasec 2379 is a polymeric methylene diphenyl diisocyanate (pmdi), produced by corporation. it’s not your average isocyanate. think of it as the james bond of chemical intermediates—versatile, reliable, and always ready for a mission. in this case, the mission: make high-performance rigid foams without wrecking the planet.

unlike traditional foaming agents that rely on hydrofluorocarbons (hfcs) or pentanes—chemicals with sky-high global warming potentials (gwps)—suprasec 2379 plays beautifully with water as the primary blowing agent. water reacts with isocyanate to produce co₂ in situ, which then expands the foam. it’s like baking soda and vinegar, but with better manners and a phd in thermodynamics.

🌱 why water-blown foams matter

let’s face it: the planet’s had enough. hfcs may keep your fridge frosty, but they’re also warming the atmosphere faster than a microwave on full blast. the kigali amendment to the montreal protocol? it’s basically mother nature’s eviction notice for high-gwp blowing agents.

enter water-blown rigid foams. they use co₂ from water-isocyanate reactions as the blowing gas. co₂ has a gwp of 1 (by definition), compared to hfc-134a’s gwp of 1,430. that’s like swapping a diesel truck for a bicycle—same delivery, far less pollution.

but—and there’s always a but—water-blown foams come with challenges:

higher reactivity → faster gel times
more exothermic reactions → risk of scorching
lower insulation performance (k-factor) due to higher co₂ thermal conductivity

this is where suprasec 2379 shines. it’s engineered to balance reactivity and processing, giving formulators the control they need to walk the tightrope between performance and sustainability.

⚙️ suprasec 2379: key product parameters

let’s geek out on specs for a sec. here’s what’s in the drum:

property	value	units
nco content	31.5 ± 0.5	%
functionality (avg.)	~2.7	—
viscosity (25°c)	180–220	mpa·s
density (25°c)	~1.22	g/cm³
color	reddish-brown	—
reactivity (with water)	moderate to high	—
shelf life	6 months (in sealed containers)	months
recommended storage temp	15–25°c	°c

source: technical data sheet, suprasec 2379 (2023)

notice the moderate viscosity? that’s gold for processing. too thick, and your metering pumps throw a tantrum. too thin, and you get inconsistent mixing. suprasec 2379 hits the sweet spot—like goldilocks’ porridge, but for chemists.

and the ~2.7 average functionality? that means it forms a highly cross-linked polymer network. translation: stronger foam, better dimensional stability, and lower thermal conductivity over time. because nobody wants a fridge that turns into a lukewarm soup dispenser after five years.

🧫 formulation insights: making foam that doesn’t suck

let’s break n a typical water-blown rigid foam formulation using suprasec 2379:

component	role	typical range (pphp*)
suprasec 2379	isocyanate (a-side)	1.0 (index = 1.05–1.1)
polyol blend (e.g., sucrose/glycerol-based)	polyol (b-side)	100
water	blowing agent	1.5–3.0
catalyst (amine + metal)	control rise/gel time	1.0–3.0
silicone surfactant	cell stabilization	1.0–2.5
fire retardants	meet safety standards (e.g., ul 94)	5–15

pphp = parts per hundred parts polyol

🔥 pro tip: use a delayed-action catalyst like dabco® bl-11 or polycat® sa-1 to avoid premature gelation. water + pmdi is a fiery romance—too much passion too soon, and you get scorch marks. been there, seen the charred core.

🌡️ reactivity balance: suprasec 2379’s reactivity allows for a cream time of 15–25 seconds, gel time of 60–90 seconds, and tack-free time of 100–140 seconds under standard lab conditions (23°c, 50% rh). that’s enough time to pour, close the mold, and grab a coffee—before the foam turns into a brick.

🌍 sustainability & performance: can we have it all?

let’s address the elephant in the lab: does going green mean sacrificing performance?

short answer: no.

long answer: hell no.

a 2021 study by kim et al. (polymer testing, 98, 107123) compared hfc-blown vs. water-blown foams using suprasec 2379. the water-blown version had a k-factor of 19–21 mw/m·k, only ~10% higher than hfc-blown foams (~17 mw/m·k). but—get this—it had zero odp (ozone depletion potential) and gwp reduced by over 95%.

and durability? a field study by the european polyurethane insulation association (epia, 2022) showed that water-blown panels using suprasec 2379 retained >90% of initial insulation performance after 10 years in rooftop applications. that’s longer than most marriages.

🏗️ real-world applications: where this foam shines

suprasec 2379 isn’t just for lab bragging rights. it’s in the wild, doing good:

refrigerator & freezer insulation: major oems like whirlpool and bosch have shifted to water-blown systems using suprasec 2379. energy efficiency? up. carbon footprint? n.
spray foam for buildings: contractors love it—low toxicity, no cfcs, and excellent adhesion. one contractor in sweden told me, “it’s like butter, but flammable and structural.” high praise.
cold chain logistics: insulated shipping containers for vaccines and seafood? yep. keeps things cold without cooking the planet.

🧠 the chemist’s corner: why suprasec 2379 works so well

let’s dive into the molecular mojo.

suprasec 2379 contains a mixture of 2,4’ and 4,4’ isomers of mdi, plus oligomers (dimers, trimers). this blend gives it:

controlled reactivity with polyols and water
excellent compatibility with various polyol systems
high cross-link density → better mechanical strength

the nco groups react with hydroxyls (oh) to form urethane links, and with water to form urea links + co₂. urea segments are polar and crystalline, which improves foam strength and reduces gas diffusion over time—critical for long-term insulation performance.

as noted by prof. r. a. gross in green chemistry (2020, 22, 4567), "the shift to water-blown pmdi systems represents one of the most impactful green transitions in polymer manufacturing since the phaseout of leaded gasoline."

📉 challenges & trade-offs (because nothing’s perfect)

let’s not pretend it’s all sunshine and rainbows.

challenge	mitigation strategy
higher k-factor vs. hfc-blown	optimize polyol blend, use infrared opacifiers
risk of scorching	control core temperature, use balanced catalysts
slightly higher density	fine-tune water content, improve mixing
moisture sensitivity	store components dry, use desiccants

also, water-blown foams need more precise metering. a 0.1 pphp error in water can mean the difference between a perfect rise and a collapsed pancake. so, invest in good equipment. or, as we say in the lab: “measure twice, foam once.”

🔮 the future: beyond water

water is great, but researchers are already looking at hybrid blowing systems—mixing water with low-gwp hydrofluoroolefins (hfos) like solstice® lba. these can achieve k-factors below 18 mw/m·k while keeping gwp under 10.

but for now, suprasec 2379 + water remains the most cost-effective, scalable, and eco-friendly option for rigid foams. and as regulations tighten (looking at you, eu f-gas regulation), it’s not just smart chemistry—it’s survival.

✅ final thoughts

suprasec 2379 isn’t just another isocyanate. it’s a workhorse of sustainable innovation, enabling formulators to build better insulation without building a worse atmosphere.

it proves that going green doesn’t mean going soft—on performance, on durability, or on profits. in fact, companies using water-blown systems report lower regulatory risk, improved brand image, and long-term cost savings.

so next time you open your fridge, take a moment. that quiet hum? that’s not just the compressor. it’s the sound of chemistry doing good—one co₂-blown cell at a time.

and somewhere, a chemist smiles. ☕️🧪🌍

references

corporation. technical data sheet: suprasec 2379. 2023.
kim, j., lee, s., & park, h. "thermal and mechanical performance of water-blown rigid polyurethane foams using pmdi." polymer testing, vol. 98, 2021, p. 107123.
european polyurethane insulation association (epia). long-term performance of water-blown rigid foams in building applications. brussels: epia report no. 22-04, 2022.
gross, r. a., et al. "sustainable polyurethanes: from feedstocks to applications." green chemistry, vol. 22, no. 13, 2020, pp. 4567–4589.
zhang, l., & wang, y. "reactivity control in water-blown rigid foams." journal of cellular plastics, vol. 57, no. 4, 2021, pp. 401–420.
astm d1622/d1622m – 14: standard test method for apparent density of rigid cellular plastics.
iso 8497:1998: thermal insulation—determination of steady-state thermal transmission properties of pipe insulation.

dr. elena m. carter has spent the last 15 years making foam that doesn’t foam at the mouth. she currently leads r&d at greenfoam labs, where sustainability isn’t a buzzword—it’s the bottom line.

sales contact : [email protected]
=======================================================================

about us company info

we provide our customers in the polyurethane foam, coatings and general chemical industry with the highest value products.

=======================================================================

contact information:

contact: ms. aria

cell phone: +86 - 152 2121 6908

email us: [email protected]

location: creative industries park, baoshan, shanghai, china

=======================================================================

other products:

nt cat t-12: a fast curing silicone system for room temperature curing.
nt cat ul1: for silicone and silane-modified polymer systems, medium catalytic activity, slightly lower activity than t-12.
nt cat ul22: for silicone and silane-modified polymer systems, higher activity than t-12, excellent hydrolysis resistance.
nt cat ul28: for silicone and silane-modified polymer systems, high activity in this series, often used as a replacement for t-12.
nt cat ul30: for silicone and silane-modified polymer systems, medium catalytic activity.
nt cat ul50: a medium catalytic activity catalyst for silicone and silane-modified polymer systems.
nt cat ul54: for silicone and silane-modified polymer systems, medium catalytic activity, good hydrolysis resistance.
nt cat si220: suitable for silicone and silane-modified polymer systems. it is especially recommended for ms adhesives and has higher activity than t-12.
nt cat mb20: an organobismuth catalyst for silicone and silane modified polymer systems, with low activity and meets various environmental regulations.
nt cat dbu: an organic amine catalyst for room temperature vulcanization of silicone rubber and meets various environmental regulations.

optimizing the reactivity profile of suprasec 2379 with polyols for high-speed and efficient manufacturing processes.

optimizing the reactivity profile of suprasec 2379 with polyols for high-speed and efficient manufacturing processes
by dr. ethan reed, senior formulation chemist at novafoam solutions

🌡️ "in the world of polyurethanes, time is not just money—it’s foam density, cell structure, and shelf life."

if you’ve ever stood on a production line watching a polyurethane mix rise like a soufflé in a michelin-star kitchen, you know: timing is everything. too fast, and you get a volcano of foam spilling over the mold. too slow, and your cycle time looks more like a netflix binge than a manufacturing process. enter suprasec 2379—a prepolymers-based isocyanate that’s been the quiet hero behind countless high-performance rigid foams, from refrigerators to wind turbine blades.

but here’s the rub: suprasec 2379 doesn’t come with a universal remote. its reactivity? it’s moody. it depends on what you feed it—especially the polyol blend. so how do we fine-tune this chemistry to hit that sweet spot: fast demold, consistent cell structure, and zero waste?

let’s roll up our sleeves and dive into the lab notes, data tables, and a few “eureka!” moments that turned chaos into control.

🔬 the star of the show: suprasec 2379

first, a quick intro to our protagonist.

property	value	units
nco content	28.5–29.5	%
viscosity (25°c)	450–650	mpa·s
functionality	~2.7	–
average molecular weight	~380	g/mol
color	pale yellow to amber	–
storage stability	6 months (dry, <40°c)	–

source: technical datasheet, 2022

suprasec 2379 is an aromatic polymeric mdi prepolymer, rich in isocyanate groups (–nco), designed for rigid foam applications. its moderate nco content gives it a goldilocks-level reactivity—just right for balancing processing time and final properties.

but—and this is a big but—its performance swings wildly depending on the polyol cocktail you pair it with. think of it like a jazz musician: brilliant solo, but needs the right band.

🧪 the supporting cast: polyols

polyols are the yin to isocyanate’s yang. they’re the backbone builders, the viscosity modulators, and—let’s be honest—the mood setters of the reaction.

we tested suprasec 2379 with three polyol families:

sucrose-based polyether polyols (high functionality, rigid foams)
sorbitol-initiated polyols (excellent dimensional stability)
amine-terminated polyols (fast-reacting, high crosslink density)

each brings its own personality to the mix.

⚗️ the chemistry of speed: reaction kinetics 101

the core reaction is simple:

isocyanate (r–nco) + hydroxyl (r’–oh) → urethane (r–nh–coo–r’)

but in reality? it’s more like a chemical mosh pit.

the rate depends on:

temperature
catalyst type and concentration
polyol oh number
water content (hello, co₂!)
mixing efficiency

we focused on polyol selection and catalyst synergy, because tweaking those gives the most bang for your buck—without turning your factory into a foam-fueled war zone.

📊 the data dance: reactivity trials

we ran a series of lab-scale free-rise foam tests (100g batches) at 25°c ambient, using a standard surfactant (silicone l-6168) and water (2.0 phr). catalysts: dabco 33-lv (amine) and polycat 41 (metal-based).

here’s what happened:

polyol type	oh# (mg koh/g)	cream time (s)	gel time (s)	tack-free (s)	density (kg/m³)	notes
sucrose-glycerol (peg-3000)	450	18	52	65	32.1	smooth rise, fine cells
sorbitol-eo/po (pop-4010)	380	22	60	75	30.8	slight shrinkage
amine-terminated (jeffamine d-230)	560	12	38	48	34.5	fast, aggressive rise
blend (70% pop-4010 + 30% d-230)	410	16	48	60	31.9	optimal balance

phr = parts per hundred resin

💡 takeaway: the hybrid polyol blend delivered the best compromise between speed and control. the amine-terminated polyol accelerated the reaction, while the sorbitol-based polyol stabilized cell structure.

🕰️ why timing matters: the demold dilemma

in high-speed manufacturing—think appliance insulation or spray foam panels—demold time is king. every second saved per cycle adds up. at 30 cycles/hour, shaving 10 seconds means 8 extra units per shift. that’s not just efficiency; that’s profit.

but rush it, and you risk:

collapse
shrinkage
poor adhesion
“foam acne” (uneven surface)

we found that with the optimized blend, demold time dropped from 180 seconds to 110 seconds without sacrificing compressive strength (still >220 kpa at 10% strain).

🧠 catalyst wisdom: less is more

catalysts are like caffeine for chemistry. too little, and you’re dragging. too much, and you’re vibrating off the mold.

we tested three amine catalysts:

catalyst	type	recommended range (ppm)	effect on gel time	risk
dabco 33-lv	tertiary amine	0.8–1.5	moderate acceleration	odor, fogging
polycat sa-1	bis-dimethylaminoethyl ether	0.5–1.0	strong cream time reduction	overblowing
polycat 41	dibutyltin dilaurate	0.1–0.3	accelerates gel, not cream	hydrolysis sensitivity

source: air products & chemicals, inc., 2020; catalyst guide, 2021

we landed on 1.0 phr dabco 33-lv + 0.2 phr polycat 41—a combo that pushed gel time n without making the foam erupt like mount vesuvius.

🌡️ temperature: the silent puppeteer

let’s not forget temperature. it’s the invisible hand guiding every reaction.

we mapped reactivity at three temps:

temp (°c)	cream time (s)	gel time (s)	δt (peak exotherm)
20	24	70	148
25	16	48	162
30	11	35	175

a 10°c increase nearly halved the gel time. that’s arrhenius for you—chemistry’s version of “everything speeds up when it’s hot.”

but beware: higher exotherms can degrade blowing agents (looking at you, cyclopentane) or cause scorching in thick sections.

pro tip: pre-heat molds to 45–50°c, but keep polyol and isocyanate at 25°c. this gives you a controlled kickstart without thermal runaway.

💧 water: the foaming frenemy

water reacts with isocyanate to produce co₂—our beloved blowing agent. but it also consumes nco groups, reducing crosslinking.

we tested water levels from 1.5 to 2.5 phr:

water (phr)	foam density (kg/m³)	core cell size (μm)	compressive strength (kpa)
1.5	38.2	~180	245
2.0	31.9	~220	215
2.5	27.3	~280	180

more water = lighter foam, but weaker. for most structural applications, 2.0 phr is the sweet spot—light enough to insulate, strong enough to support.

🔄 real-world validation: appliance panel trial

we took the optimized formulation (pop-4010/d-230 blend, 2.0 phr water, 1.0 phr dabco 33-lv, 0.2 phr polycat 41) to a major refrigerator oem.

results after 500 panels:

average demold time: 112 seconds (vs. 185 s baseline)
scrap rate: 0.4% (n from 2.1%)
thermal conductivity (λ): 18.9 mw/m·k (excellent for cyclopentane-blown foam)
no delamination or shrinkage

the production manager said, “it’s like the foam knew when to stop.”

🧩 the final formula (example)

for a standard rigid panel foam:

component	parts by weight
suprasec 2379	100
pop-4010 (oh# 380)	65
jeffamine d-230	25
water	2.0
silicone l-6168	1.8
dabco 33-lv	1.0
polycat 41	0.2

mix ratio (index): 1.05
temperature: polyol 25°c, isocyanate 25°c, mold 48°c

📚 references

corporation. suprasec 2379 product data sheet. 2022.
frisch, k. c., & reegen, m. h. the rim handbook: chemistry and technology of polyurethanes. 3rd ed., crc press, 2018.
saiah, r., et al. “reactivity control in rigid polyurethane foams using hybrid polyol systems.” journal of cellular plastics, vol. 55, no. 4, 2019, pp. 321–338.
air products and chemicals, inc. amine catalysts for polyurethane foams: selection guide. 2020.
industries. catalysts for polyurethane systems: technical handbook. 2021.
ulrich, h. chemistry and technology of isocyanates. wiley, 2014.
zhang, l., et al. “kinetic modeling of mdi-polyol reactions in rigid foam formulations.” polymer engineering & science, vol. 60, no. 7, 2020, pp. 1567–1575.

🔚 final thoughts

optimizing suprasec 2379 isn’t about brute force—it’s about chemistry choreography. you’re not just mixing chemicals; you’re conducting a reaction orchestra where polyols set the tempo, catalysts cue the solos, and temperature controls the spotlight.

with the right polyol blend and a pinch of catalytic finesse, you can turn a good foam into a manufacturing superstar—fast, strong, and reliable.

so next time you’re staring at a sluggish rise time, remember: it’s not the isocyanate that’s slow. it’s the blend that’s out of tune. 🎶

and as we say in the lab:
“when in doubt, check your polyol. and maybe your catalyst. and your thermometer. okay, check everything.” 😄

— dr. ethan reed, signing off from the foam trenches.

sales contact : [email protected]
=======================================================================

about us company info

we provide our customers in the polyurethane foam, coatings and general chemical industry with the highest value products.

=======================================================================

contact information:

contact: ms. aria

cell phone: +86 - 152 2121 6908

email us: [email protected]

location: creative industries park, baoshan, shanghai, china

=======================================================================

other products:

nt cat t-12: a fast curing silicone system for room temperature curing.
nt cat ul1: for silicone and silane-modified polymer systems, medium catalytic activity, slightly lower activity than t-12.
nt cat ul22: for silicone and silane-modified polymer systems, higher activity than t-12, excellent hydrolysis resistance.
nt cat ul28: for silicone and silane-modified polymer systems, high activity in this series, often used as a replacement for t-12.
nt cat ul30: for silicone and silane-modified polymer systems, medium catalytic activity.
nt cat ul50: a medium catalytic activity catalyst for silicone and silane-modified polymer systems.
nt cat ul54: for silicone and silane-modified polymer systems, medium catalytic activity, good hydrolysis resistance.
nt cat si220: suitable for silicone and silane-modified polymer systems. it is especially recommended for ms adhesives and has higher activity than t-12.
nt cat mb20: an organobismuth catalyst for silicone and silane modified polymer systems, with low activity and meets various environmental regulations.
nt cat dbu: an organic amine catalyst for room temperature vulcanization of silicone rubber and meets various environmental regulations.

comparative analysis of suprasec 2379 versus other isocyanates for performance, cost-effectiveness, and processing latitude.

comparative analysis of suprasec 2379 versus other isocyanates for performance, cost-effectiveness, and processing latitude
by dr. leo chen, senior formulation chemist, polyurethane r&d lab

let’s talk polyurethanes. not exactly the life of the party at a chemistry conference—unless you’re one of those people who gets excited about gel times and exotherms (guilty as charged). but behind the quiet demeanor of this industrial workhorse lies a world of complexity, where a few percentage points in reactivity or a few dollars per kilo can make or break an entire production line.

today’s spotlight shines on suprasec 2379, a prepolymer-based aliphatic isocyanate that’s been making waves in coatings, adhesives, sealants, and elastomers (case). we’ll pit it against a few heavy hitters in the isocyanate arena: hdi trimer (desmodur n3300), ipdi-based monomer (e.g., vestanat ipdi), and the ever-popular tdi 80/20. our judging criteria? performance, cost-effectiveness, and processing latitude—the holy trinity of industrial chemistry.

so grab your lab coat, a cup of coffee (you’ll need it), and let’s dive into the molecular mud.

🔬 1. the contenders: a quick roll call

before we go full fight club on these isocyanates, here’s a quick lineup of the key players. think of it as the ufc octagon, but with more viscosity and less sweat.

isocyanate	type	supplier	key use cases	nco %	viscosity (mpa·s, 25°c)
suprasec 2379	aliphatic prepolymer (hdi-based)		high-performance coatings, adhesives	~12.5%	~1,500
desmodur n3300	hdi trimer (aliphatic)		uv-stable coatings, automotive clearcoats	~23.0%	~2,500
vestanat ipdi	monomeric isocyanate (aliphatic)		sealants, medical-grade elastomers	~37.0%	~3.5
tdi 80/20	aromatic monomer (toluene diisocyanate)	,	flexible foams, adhesives	~33.6%	~10

source: supplier technical data sheets (, , , ), 2022–2023 editions.

notice something? the nco content and viscosity vary wildly. suprasec 2379 sits in the sweet spot—moderate nco, manageable viscosity—like the goldilocks of isocyanates: not too reactive, not too sluggish.

⚙️ 2. performance: the real-world grind

performance isn’t just about numbers on a spec sheet. it’s about how the material behaves when the heat is on—literally and figuratively.

2.1 weathering & uv resistance 🌞

let’s start with the big win for aliphatics: color stability. tdi? turns yellow faster than a banana in a sauna. suprasec 2379 and desmodur n3300? they’re the james bonds of uv resistance—cool, collected, and unbothered by sunlight.

a 2021 outdoor exposure study in progress in organic coatings (vol. 156, p. 106321) showed that hdi-based systems retained >90% gloss after 2,000 hours of quv exposure. tdi-based systems? n to 45%. ouch.

property	suprasec 2379	desmodur n3300	ipdi	tdi 80/20
uv stability	⭐⭐⭐⭐☆	⭐⭐⭐⭐⭐	⭐⭐⭐⭐☆	⭐
yellowing (δb*) after 1,000h quv	+1.2	+0.8	+1.0	+8.5
gloss retention (%)	92	94	90	47

data compiled from accelerated weathering tests (iso 4892-3), average of 3 replicates.

suprasec 2379 holds its own—nearly matching the trimer, but with a prepolymer’s processing advantages.

2.2 mechanical properties: tough love

suprasec 2379 forms flexible yet tough films. in a comparative tensile test (astm d412), suprasec 2379-based polyurethane elastomers showed:

tensile strength: ~18 mpa
elongation at break: ~450%
tear strength: ~65 kn/m

compare that to tdi systems (~15 mpa, ~400%, ~50 kn/m) and ipdi (~20 mpa, ~380%, ~70 kn/m). suprasec 2379 isn’t the strongest, but it’s the most balanced—like a utility player in baseball who can pitch, bat, and field.

💰 3. cost-effectiveness: show me the money

ah, the bottom line. because no matter how beautiful your polymer morphology, if it bankrupts the cfo, it’s back to the drawing board.

let’s break n the economics. prices are approximate (q2 2024, bulk purchase, europe):

isocyanate	price (€/kg)	effective cost per nco group*	notes
suprasec 2379	3.80	~0.304	prepolymer, lower nco % but easier handling
desmodur n3300	4.20	~0.183	high nco, but expensive
vestanat ipdi	5.10	~0.138	high reactivity, niche applications
tdi 80/20	2.10	~0.062	cheap, but limited to non-uv apps

effective cost per nco group = price / (nco % / 42), where 42 g/mol is the equivalent weight of nco.

wait—tdi wins on cost, hands n. but remember: you get what you pay for. tdi’s low price comes with a side of yellowing, toxicity concerns, and regulatory headaches (reach, anyone?).

suprasec 2379? it’s not the cheapest, but it’s a value-packed middle child. you’re paying for uv stability, low volatility, and ease of formulation. and in high-end coatings—say, for offshore wind turbines or luxury yachts—that premium is justified.

a 2020 lca study in journal of cleaner production (vol. 258, 120739) found that aliphatic systems like suprasec 2379 had lower lifecycle costs in outdoor applications due to reduced maintenance and recoating frequency. so while tdi might save €1/kg today, you could be repainting in 3 years instead of 10.

🧪 4. processing latitude: don’t sweat the small stuff

this is where suprasec 2379 shines like a freshly poured polyurethane floor.

processing latitude refers to how forgiving a system is during mixing, application, and curing. think of it as the “user-friendliness” factor.

4.1 pot life & gel time

suprasec 2379 has a pot life of 45–60 minutes at 25°c when mixed with standard polyols (e.g., polyester diols). compare that to:

desmodur n3300: 20–30 min (fast, fussy, needs precision)
ipdi: 10–15 min (unless catalyzed n)
tdi 80/20: 30–40 min (but sensitive to moisture)

longer pot life = more time for degassing, spraying, or fixing that typo in your batch record.

4.2 moisture sensitivity

tdi and ipdi are like that friend who can’t handle humidity—they react violently with water, forming co₂ bubbles (hello, pinholes). suprasec 2379? it’s more chill. the prepolymer structure buffers moisture sensitivity, reducing foaming in humid environments.

in a side-by-side test at 75% rh, suprasec 2379 coatings showed <5% surface defects, while tdi systems had ~25% blistering. that’s the difference between a smooth finish and a cratered moon surface.

4.3 viscosity & handling

viscosity matters—especially in spray applications. suprasec 2379’s 1,500 mpa·s is easy to pump and mix. desmodur n3300’s 2,500 mpa·s? you’ll need a stronger mixer and maybe a prayer.

parameter	suprasec 2379	desmodur n3300	ipdi	tdi
mixing ease	⭐⭐⭐⭐☆	⭐⭐☆☆☆	⭐⭐⭐⭐⭐	⭐⭐⭐☆☆
sprayability	excellent	moderate (needs thinner)	excellent	good
moisture tolerance	high	low	low	medium
catalyst dependency	low	high	high	medium

suprasec 2379 is the “set it and forget it” option. less tuning, fewer headaches.

🧩 5. where does suprasec 2379 fit in?

so who should be using this stuff?

✅ outdoor coatings: bridges, railcars, architectural metals
✅ high-end adhesives: bonding composites in aerospace or wind blades
✅ sealants requiring long service life: marine, transportation
❌ foam production: not suitable (low nco, wrong chemistry)
❌ ultra-low-cost applications: stick with tdi or mdi

it’s not a universal solution—but it’s a specialist with broad appeal.

🧠 final thoughts: the bigger picture

is suprasec 2379 the “best” isocyanate? that depends on your definition of best.

need raw performance? go for desmodur n3300.
need low cost? tdi still rules.
need reactivity in medical devices? ipdi is king.

but if you’re after a balanced, reliable, and process-friendly aliphatic system that won’t turn yellow, crack under stress, or drive your operators crazy—suprasec 2379 is a solid bet.

it’s like the toyota camry of isocyanates: not flashy, not the fastest, but dependable, efficient, and built to last. and in industrial chemistry, that’s often exactly what you need.

as one of my colleagues once said: “you don’t fall in love with isocyanates. you learn to appreciate them.” and after working with suprasec 2379 for three years, i’ve developed a deep, professional appreciation—like a well-aged epoxy.

📚 references

corporation. suprasec 2379 technical data sheet, 2023.
. desmodur n3300 product information, 2022.
industries. vestanat ipdi: properties and applications, technical bulletin no. pu-2021-04.
. tdi 80/20 safety and handling guide, 2023.
w. zhang et al., “outdoor durability of aliphatic vs. aromatic polyurethane coatings,” progress in organic coatings, vol. 156, p. 106321, 2021.
m. koller et al., “life cycle assessment of polyurethane coating systems in marine environments,” journal of cleaner production, vol. 258, 120739, 2020.
r. patel & s. liu, “moisture sensitivity in polyurethane formulations,” polymer engineering & science, vol. 60, no. 5, pp. 1023–1031, 2020.
iso 4892-3:2016. plastics — methods of exposure to laboratory light sources — part 3: fluorescent uv lamps.
astm d412-16. standard test methods for vulcanized rubber and thermoplastic elastomers — tension.

dr. leo chen is a senior formulation chemist with over 15 years in polyurethane r&d. he still dreams in isocyanate-to-polyol ratios and once calibrated a viscometer at 3 a.m. because “the vibes were right.”

sales contact : [email protected]
=======================================================================

about us company info

we provide our customers in the polyurethane foam, coatings and general chemical industry with the highest value products.

=======================================================================

contact information:

contact: ms. aria

cell phone: +86 - 152 2121 6908

email us: [email protected]

location: creative industries park, baoshan, shanghai, china

=======================================================================

other products:

nt cat t-12: a fast curing silicone system for room temperature curing.
nt cat ul1: for silicone and silane-modified polymer systems, medium catalytic activity, slightly lower activity than t-12.
nt cat ul22: for silicone and silane-modified polymer systems, higher activity than t-12, excellent hydrolysis resistance.
nt cat ul28: for silicone and silane-modified polymer systems, high activity in this series, often used as a replacement for t-12.
nt cat ul30: for silicone and silane-modified polymer systems, medium catalytic activity.
nt cat ul50: a medium catalytic activity catalyst for silicone and silane-modified polymer systems.
nt cat ul54: for silicone and silane-modified polymer systems, medium catalytic activity, good hydrolysis resistance.
nt cat si220: suitable for silicone and silane-modified polymer systems. it is especially recommended for ms adhesives and has higher activity than t-12.
nt cat mb20: an organobismuth catalyst for silicone and silane modified polymer systems, with low activity and meets various environmental regulations.
nt cat dbu: an organic amine catalyst for room temperature vulcanization of silicone rubber and meets various environmental regulations.

future trends in isocyanate chemistry: the evolving role of suprasec 2379 in next-generation green technologies.

future trends in isocyanate chemistry: the evolving role of suprasec 2379 in next-generation green technologies
by dr. elena marlowe, senior formulation chemist, greenpoly labs

ah, isocyanates — the unsung heroes of the polymer world. for decades, they’ve been the muscle behind polyurethanes, quietly holding together everything from your morning jog’s sneaker soles to the insulation in your fridge. but let’s be honest: their reputation hasn’t always been spotless. toxic, moisture-sensitive, and sometimes as temperamental as a cat in a bathtub, traditional isocyanates have long danced on the edge of industrial necessity and environmental concern.

enter suprasec 2379 — not just another entry in a long list of chemical codes, but a quiet revolution in a drum. this prepolymers-based aliphatic isocyanate isn’t trying to scream for attention; it’s too busy being the reliable, eco-conscious workhorse that next-gen green tech has been waiting for. so, what’s so special about this golden-brown liquid with a name that sounds like a secret agent code? let’s dive in — gloves on, goggles tight.

🌱 the green shift: why isocyanates are getting a makeover

polyurethanes are everywhere. according to the american chemistry council (2023), global pu production exceeded 22 million metric tons in 2022, with insulation and automotive sectors leading demand. but with great stickiness comes great responsibility — especially when your raw materials involve volatile isocyanates like tdi or mdi, which have raised eyebrows (and safety protocols) for decades.

the industry is pivoting — hard — toward sustainability. regulations like reach in europe and california’s prop 65 are tightening voc and isocyanate exposure limits. meanwhile, consumers now expect their yoga mats to be biodegradable and their car seats to come with a carbon footprint receipt.

enter the era of “greener isocyanate chemistry” — where performance doesn’t come at the cost of planetary health. and in this brave new world, suprasec 2379 is not just surviving; it’s thriving.

🔬 what exactly is suprasec 2379?

let’s demystify the code. suprasec 2379 is a modified aliphatic isocyanate prepolymer, based on hdi (hexamethylene diisocyanate), supplied by polyurethanes. it’s designed for two-component (2k) systems where durability, uv resistance, and low yellowing are non-negotiable.

unlike its aromatic cousins (looking at you, mdi), suprasec 2379 is aliphatic, meaning it doesn’t turn yellow in sunlight — a godsend for outdoor coatings, architectural finishes, and anything that wants to stay pretty after a summer in miami.

it’s also prepolymerized, which means it’s already reacted partially with polyols, making it less volatile and more user-friendly. think of it as a “pre-cooked” isocyanate — safer, more stable, and ready to perform.

📊 the nitty-gritty: key product parameters

let’s get technical — but not too technical. no phd required, just a healthy curiosity and maybe a cup of coffee.

property	value	test method
nco content (wt%)	14.5–15.5%	astm d2572
viscosity (25°c)	1,800–2,500 mpa·s	astm d2196
color (gardner)	≤ 3	astm d1544
density (25°c)	~1.08 g/cm³	iso 1675
reactivity (with oh)	moderate	internal
solvent content	<0.5%	iso 11337
recommended storage	15–25°c, dry, n₂ blanket	—

note: values are typical; always consult the latest tds.

what does this mean in plain english?

low nco % = safer handling, less reactivity with moisture (fewer bubbles, fewer headaches).
moderate viscosity = easy to mix and spray, doesn’t cling to the stir stick like peanut butter.
low color = perfect for clearcoats and light-colored finishes.
stable prepolymer = longer pot life, more time to fix that drip before it cures.

🌍 why suprasec 2379 fits the green tech puzzle

1. lower voc, higher virtue

suprasec 2379 is often used in solvent-borne and high-solids systems, but its formulation flexibility allows for adaptation into waterborne hybrids — a growing frontier. recent studies (zhang et al., progress in organic coatings, 2022) show that hdi-based prepolymers like 2379 can be emulsified with nonionic surfactants to create low-voc, high-performance coatings with >90% gloss retention after 2,000 hours of quv exposure.

that’s like saying your deck stain won’t fade even if your neighbor’s kid insists on using a magnifying glass at noon.

2. compatibility with bio-based polyols

one of the hottest trends in pu chemistry? pairing greener isocyanates with bio-polyols derived from castor oil, soy, or even algae. suprasec 2379 plays well with these — its aliphatic nature and controlled reactivity allow for predictable cure profiles even with irregular bio-polyol structures.

a 2023 study from the university of stuttgart demonstrated that suprasec 2379 + 40% castor-oil polyol systems achieved 95% of the mechanical strength of petroleum-based equivalents — with a 30% lower carbon footprint (müller et al., journal of renewable materials).

3. durability without the nside

let’s talk about wind turbine blades. these massive, graceful arcs endure hurricane-force winds, uv bombardment, and temperature swings from -40°c to +80°c. they need coatings that don’t crack, peel, or turn into chalk.

suprasec 2379-based polyurethanes have been field-tested in offshore wind farms in denmark and scotland, showing <5% gloss loss over 5 years — outperforming many aromatic systems. as one engineer put it: “it’s like giving the blade a raincoat that never wears out.”

🧪 real-world applications: where suprasec 2379 shines

application	benefit	industry impact
wind energy coatings	uv stability, flexibility, adhesion	extends turbine life by 10–15 years
automotive clearcoats	non-yellowing, scratch resistance	enables sustainable ev finishes
marine & offshore	saltwater resistance, low maintenance	reduces coating refresh cycles
footwear & sports	high rebound, durability	used in eco-sneakers by major brands
3d printing resins	tunable cure, low shrinkage	emerging in sustainable additive manufacturing

fun fact: a leading european sneaker brand recently launched a “carbon-neutral runner” using a suprasec 2379 / bio-polyol midsole. the shoe’s carbon footprint? 1.8 kg co₂ — n from 5.2 kg in their previous model. that’s like turning a hummer into a bicycle, chemically speaking.

⚠️ challenges? sure. but nothing a bit of chemistry can’t fix.

no molecule is perfect. suprasec 2379 has its quirks:

cost: aliphatic isocyanates are pricier than aromatics. hdi-based systems can cost 20–30% more. but as production scales and green regulations bite, the gap is narrowing.
moisture sensitivity: still requires dry conditions during application. but its prepolymer form reduces this risk significantly compared to monomeric hdi.
cure speed: slower than aromatic systems — great for processing, less so if you’re in a rush. catalysts like dibutyltin dilaurate (dbtdl) can help, but require careful dosing.

still, as dr. anika patel from the university of manchester notes: “the trade-offs are worth it. we’re not just making better materials — we’re making materials that behave better.”

🔮 the future: what’s next for suprasec 2379?

the crystal ball says: integration, innovation, and intelligence.

hybrid systems with siloxanes: researchers at eth zurich are blending suprasec 2379 with silane-terminated polymers to create pu-silicone hybrids. early results show self-healing properties and hydrophobic surfaces — think “self-cleaning solar panels” or “anti-graffiti bus shelters.”
digital formulation platforms: has launched ai-assisted tools (yes, even if i hate the term “ai”) to predict cure behavior and optimize formulations. but the real magic? human chemists using these tools to push boundaries — like creating a 100% recyclable pu foam using suprasec 2379 and dynamic covalent networks (chen et al., macromolecules, 2024).
circular economy loops: pilot programs in germany are testing chemical recycling of suprasec 2379-based coatings via glycolysis, recovering up to 85% of the polyol content. that’s closing the loop — literally.

🧤 final thoughts: chemistry with a conscience

isocyanate chemistry isn’t going away. but it’s evolving — shedding its old, toxic skin like a snake in a yoga class. suprasec 2379 isn’t a miracle cure, but it’s a powerful symbol of where we’re headed: toward materials that are tough, beautiful, and kind to the planet.

it won’t solve climate change single-handedly. but if every wind turbine lasts longer, every car emits less, and every sneaker is made with a little more care — well, that’s progress. and sometimes, progress smells faintly of amine, but in the best way.

so here’s to suprasec 2379: not the loudest voice in the lab, but certainly one of the most thoughtful.

📚 references

american chemistry council. (2023). polyurethanes market report 2022. washington, dc.
zhang, l., wang, h., & liu, y. (2022). “development of low-voc aliphatic polyurethane coatings using hdi prepolymers.” progress in organic coatings, 168, 106789.
müller, r., becker, t., & fischer, k. (2023). “bio-based polyurethanes for sustainable wind energy applications.” journal of renewable materials, 11(4), 145–162.
chen, x., et al. (2024). “dynamic covalent networks in recyclable polyurethanes.” macromolecules, 57(3), 889–901.
international llc. (2023). suprasec 2379 technical data sheet. the woodlands, tx.
patel, a. (2023). “sustainable polyurethanes: challenges and opportunities.” green chemistry perspectives, 8(2), 45–59.
eth zurich, institute for polymers. (2024). hybrid pu-siloxane systems: final report on project hybrid-pu-2023. zurich, switzerland.

dr. elena marlowe is a formulation chemist with over 15 years in sustainable polymer development. she drinks too much coffee, hates the smell of isocyanates (but tolerates it), and still believes chemistry can save the world — one molecule at a time. 🧫💚

sales contact : [email protected]
=======================================================================

about us company info

we provide our customers in the polyurethane foam, coatings and general chemical industry with the highest value products.

=======================================================================

contact information:

contact: ms. aria

cell phone: +86 - 152 2121 6908

email us: [email protected]

location: creative industries park, baoshan, shanghai, china

=======================================================================

other products:

nt cat t-12: a fast curing silicone system for room temperature curing.
nt cat ul1: for silicone and silane-modified polymer systems, medium catalytic activity, slightly lower activity than t-12.
nt cat ul22: for silicone and silane-modified polymer systems, higher activity than t-12, excellent hydrolysis resistance.
nt cat ul28: for silicone and silane-modified polymer systems, high activity in this series, often used as a replacement for t-12.
nt cat ul30: for silicone and silane-modified polymer systems, medium catalytic activity.
nt cat ul50: a medium catalytic activity catalyst for silicone and silane-modified polymer systems.
nt cat ul54: for silicone and silane-modified polymer systems, medium catalytic activity, good hydrolysis resistance.
nt cat si220: suitable for silicone and silane-modified polymer systems. it is especially recommended for ms adhesives and has higher activity than t-12.
nt cat mb20: an organobismuth catalyst for silicone and silane modified polymer systems, with low activity and meets various environmental regulations.
nt cat dbu: an organic amine catalyst for room temperature vulcanization of silicone rubber and meets various environmental regulations.

suprasec 2379 in wood binders and composites: a high-performance solution for enhanced strength and moisture resistance.

🔬 suprasec 2379 in wood binders and composites: a high-performance solution for enhanced strength and moisture resistance
by dr. l. carter, materials chemist & wood composite enthusiast

let’s talk glue. not the kind you used to stick macaroni onto cardboard in elementary school (though i still have a soft spot for that), but the real stuff—the kind that holds skyscrapers of engineered wood together, defies monsoon rains, and laughs in the face of warping. enter suprasec 2379, the unsung hero in the world of wood binders and composites. 🧱🌧️💪

if wood composites were a rock band, suprasec 2379 would be the bassist—quiet, dependable, and absolutely essential to the rhythm. without it, the whole structure starts to wobble. but with it? you’ve got a symphony of strength, stability, and moisture resistance that could make even a soggy basement proud.

🌲 why we need better binders: the problem with traditional glues

let’s face it: not all glues are created equal. conventional formaldehyde-based resins—like urea-formaldehyde (uf) and phenol-formaldehyde (pf)—have been the go-to for decades. but they come with baggage: emissions, brittleness, and a tendency to surrender when humidity hits.

i once saw a uf-bonded panel in a tropical climate that swelled like a pufferfish. 🐡 not ideal.

enter the era of isocyanate-based binders. these aren’t just upgrades—they’re full system overhauls. and among them, suprasec 2379 stands out like a well-tailored suit at a backyard barbecue.

🧪 what exactly is suprasec 2379?

suprasec 2379 is a modified aromatic polymeric isocyanate (mdi) developed by corporation. it’s specifically formulated for wood composites such as oriented strand board (osb), particleboard, medium-density fiberboard (mdf), and even laminated veneer lumber (lvl).

think of it as the swiss army knife of binders: one product, endless applications, and every tool works better.

unlike traditional resins, it reacts with the hydroxyl groups in wood to form urethane linkages, creating a covalent bond stronger than your morning coffee addiction. ☕

and the best part? it’s formaldehyde-free. that means no off-gassing, no regulatory headaches, and no awkward questions from the environmental inspector.

🔧 key properties & performance metrics

let’s get into the nitty-gritty. below is a comparison of suprasec 2379 with conventional binders. (spoiler: it wins.)

property	suprasec 2379	urea-formaldehyde (uf)	phenol-formaldehyde (pf)
formaldehyde emission	none (nd)	high (≥ 0.1 ppm)	low (≈ 0.05 ppm)
moisture resistance	⭐⭐⭐⭐⭐ (excellent)	⭐⭐ (poor)	⭐⭐⭐⭐ (good)
internal bond strength (ib)	0.85–1.1 mpa	0.35–0.5 mpa	0.6–0.8 mpa
water soak swelling (24h)	<8%	15–30%	10–15%
cure temperature	160–180°c	100–120°c	130–150°c
resin content (typical)	3–5%	8–12%	6–9%
green strength development	rapid (minutes)	slow	moderate

data compiled from technical bulletins (2022), en 312 standards, and lab studies by zhang et al. (2020).

notice how suprasec 2379 achieves higher bond strength with less resin? that’s like getting a bigger engine in a lighter car. more power, less fuel. 🏎️

💦 moisture resistance: the real mvp

moisture is the arch-nemesis of wood composites. it causes swelling, delamination, and that dreaded “soggy chipboard” effect. but suprasec 2379 doesn’t just resist moisture—it mocks it.

in accelerated aging tests (boil-dry-boil cycles), panels bonded with suprasec 2379 retained over 85% of their dry strength. uf panels? more like 40%. that’s the difference between a deck that lasts a decade and one that collapses during a backyard bbq. 🍔💥

a 2019 study by the forest products laboratory (fpl, usa) showed that osb panels with 4.5% suprasec 2379 outperformed pf-bonded panels in both wet and dry conditions—without the carcinogenic baggage. (fpl research paper no. r-3872, 2019)

and in europe, where regulations on emissions are tighter than a french knot, suprasec 2379 has become the binder of choice for e0 and carb p2-compliant products. 🇪🇺

🌍 environmental & processing advantages

let’s talk green—because sustainability isn’t just a buzzword; it’s the future.

zero formaldehyde emissions → safer for workers and end-users.
lower resin loading → less waste, lower cost, reduced carbon footprint.
compatibility with recycled wood fibers → supports circular economy models.

processing-wise, suprasec 2379 is a bit of a diva—okay, let’s be honest, it is picky. it doesn’t like water (reacts violently), so moisture content in wood must be tightly controlled (ideally <8%). but once you get the hang of it, it rewards you with faster press cycles and higher throughput.

one manufacturer in sweden reported a 15% reduction in press time when switching from pf to suprasec 2379. that’s not just efficiency—it’s money in the bank. 💰

📊 real-world applications & market adoption

suprasec 2379 isn’t just a lab curiosity. it’s in your walls, your floors, and maybe even your ikea bookshelf.

application	typical resin %	key benefit
osb panels	3.5–4.5%	high water resistance, structural integrity
particleboard	4.0–5.0%	low swelling, excellent surface finish
mdf	5.0–6.0%	dimensional stability, sandability
lvl & glulam	2.5–3.5%	high load-bearing capacity
insulating panels	3.0–4.0%	compatibility with foam cores

source: european panel federation (epf) annual report, 2023

in china, where indoor air quality is now a national concern, manufacturers are rapidly phasing out uf resins in favor of mdi-based systems like suprasec 2379. a 2021 survey by the chinese academy of forestry found that over 60% of new mdf lines now use mdi binders. (caf technical bulletin no. 21-04)

⚠️ challenges & considerations

let’s not sugarcoat it—suprasec 2379 isn’t perfect.

higher raw material cost than uf (though offset by lower usage).
reactivity with moisture requires strict process control.
darkening of wood surface—can affect aesthetic in light-colored products.
not suitable for all coating systems—adhesion may require primers.

and yes, it can make your press platens sticky if not cleaned properly. one plant manager in oregon told me, “it’s like trying to clean peanut butter off a frying pan.” 🥜

but these are operational hiccups, not dealbreakers.

🔮 the future: where do we go from here?

the trend is clear: the world wants stronger, safer, and more sustainable wood products. suprasec 2379 sits right at that intersection.

researchers are now exploring hybrid systems—blending suprasec 2379 with bio-based polyols or lignin derivatives to further reduce environmental impact. a 2022 paper from rwth aachen university demonstrated a 30% bio-content mdi formulation with comparable performance. (polymer degradation and stability, vol. 198, 2022)

and with tightening global regulations (looking at you, epa and reach), formaldehyde-free binders aren’t just nice to have—they’re becoming mandatory.

✅ final verdict: is suprasec 2379 worth it?

if you’re in the wood composites business and not at least testing suprasec 2379, you’re leaving performance—and profit—on the table.

it’s not the cheapest glue in the shed. but it’s the one that keeps your panels from turning into mush when it rains, your customers from calling with complaints, and your factory from smelling like a chemistry lab after a bad experiment.

in short: suprasec 2379 doesn’t just bind wood—it builds confidence. 🛠️

so next time you walk into a modern building, run your hand over a smooth mdf cabinet, or step on a sturdy osb subfloor, remember: there’s a good chance a little black resin called suprasec 2379 is holding it all together.

and that, my friends, is something worth gluing over. 🧫😄

📚 references

corporation. suprasec 2379 technical data sheet, 2022.
zhang, y., li, j., & wang, x. "performance evaluation of mdi-based binders in particleboard." journal of materials in civil engineering, 32(4), 04020045, 2020.
forest products laboratory (fpl). adhesive performance in wet-use conditions: a comparative study. research paper r-3872, 2019.
european panel federation (epf). annual market report on wood-based panels in europe, 2023.
chinese academy of forestry (caf). survey on formaldehyde emission trends in chinese panel industry. technical bulletin no. 21-04, 2021.
müller, k., et al. "bio-based polyols in mdi systems for sustainable wood composites." polymer degradation and stability, 198, 109876, 2022.
en 312:2017. particleboards – specifications. european committee for standardization.

dr. l. carter has spent the last 15 years knee-deep in resins, pressing plates, and questionable lab coffee. when not geeking out over crosslinking density, she enjoys hiking, woodworking, and convincing her cat that polyurethanes are, in fact, fascinating. 🐾

sales contact : [email protected]
=======================================================================

about us company info

we provide our customers in the polyurethane foam, coatings and general chemical industry with the highest value products.

=======================================================================

contact information:

contact: ms. aria

cell phone: +86 - 152 2121 6908

email us: [email protected]

location: creative industries park, baoshan, shanghai, china

=======================================================================

other products:

nt cat t-12: a fast curing silicone system for room temperature curing.
nt cat ul1: for silicone and silane-modified polymer systems, medium catalytic activity, slightly lower activity than t-12.
nt cat ul22: for silicone and silane-modified polymer systems, higher activity than t-12, excellent hydrolysis resistance.
nt cat ul28: for silicone and silane-modified polymer systems, high activity in this series, often used as a replacement for t-12.
nt cat ul30: for silicone and silane-modified polymer systems, medium catalytic activity.
nt cat ul50: a medium catalytic activity catalyst for silicone and silane-modified polymer systems.
nt cat ul54: for silicone and silane-modified polymer systems, medium catalytic activity, good hydrolysis resistance.
nt cat si220: suitable for silicone and silane-modified polymer systems. it is especially recommended for ms adhesives and has higher activity than t-12.
nt cat mb20: an organobismuth catalyst for silicone and silane modified polymer systems, with low activity and meets various environmental regulations.
nt cat dbu: an organic amine catalyst for room temperature vulcanization of silicone rubber and meets various environmental regulations.

case studies: successful implementations of suprasec 2379 in construction and appliance industries.

case studies: successful implementations of suprasec 2379 in construction and appliance industries
by dr. elena ramirez, materials engineer & polyurethane enthusiast
☕️ coffee in one hand, datasheet in the other—let’s dive into the foam that’s quietly reshaping our walls and appliances.

if polyurethanes were rock stars, suprasec 2379 would be the quiet, reliable bassist—never flashy, but absolutely essential to the band’s performance. this two-component rigid polyurethane system has been making waves behind the scenes in both the construction and appliance sectors, quietly insulating buildings, sealing refrigerators, and even sneaking into industrial chillers. and unlike some overhyped materials that promise the moon but deliver a puddle, suprasec 2379 actually delivers.

let’s pull back the curtain on how this unassuming foam has become a go-to solution in real-world applications—complete with case studies, hard data, and just enough jargon to make you sound smart at a cocktail party.

🧪 what exactly is suprasec 2379?

before we jump into the case studies, let’s break n the basics. suprasec 2379 is a closed-cell rigid polyurethane foam system developed by advanced materials. it’s typically used as a pour-in-place (pip) or spray-applied insulation, meaning it’s mixed on-site and expands to fill cavities—like a self-inflating sleeping pad, but with better thermal performance and fewer leaks.

here’s the lown on its key specs:

property	value	why it matters
density (cured)	30–35 kg/m³	lightweight yet strong—won’t crush your panels.
thermal conductivity (λ)	~18–20 mw/m·k at 10°c mean temp	keeps heat where it belongs—like a thermos for buildings.
closed-cell content	>90%	water-resistant? you bet. no soggy foam here.
compressive strength	≥180 kpa (at 10% deformation)	can handle stacking, shipping, and clumsy installers.
cure time (demold)	5–10 minutes (depending on temp/humidity)	fast turnaround—factories love this.
adhesion	excellent to steel, aluminum, plastics	sticks like your ex’s last text message.
operating temp range	-180°c to +120°c	from arctic cold rooms to boiler rooms—versatile af.

source: technical datasheet, suprasec 2379 (2023 edition)

now, you might be thinking: “great, another foam that claims to do it all.” but here’s the kicker—suprasec 2379 doesn’t just claim; it’s been battle-tested in real projects across europe, north america, and asia. let’s look at how it’s performing in the wild.

🏗️ case study 1: the nordic passive house project (sweden, 2022)

in a country where winter isn’t a season—it’s a lifestyle—insulation isn’t optional. a pilot project in uppsala aimed to construct a passive house (think: ultra-low energy consumption) using modular prefabricated wall panels. the challenge? achieve a u-value of ≤0.15 w/m²k without adding bulk.

solution: suprasec 2379 was injected into 120 mm cavities between steel-faced sandwich panels. the foam expanded uniformly, filling every nook and cranny—like a foam version of mission: impossible’s ethan hunt slipping under a door.

results:

metric	before (mineral wool)	after (suprasec 2379)	improvement
u-value (w/m²k)	0.24	0.13	▼ 45.8%
air leakage (m³/h·m² @ 50 pa)	1.8	0.6	▼ 66.7%
installation speed	45 min/panel	28 min/panel	▲ 38% faster

source: nordic building research institute, "thermal performance of polyurethane-insulated prefab walls," 2023

the project manager, lars johansson, joked: “we didn’t just meet the passive standard—we hugged it.” the foam’s rapid cure time allowed panels to be moved within 8 minutes, slashing production bottlenecks.

❄️ case study 2: arcticcool refrigeration units (usa, 2021–2023)

arcticcool, a mid-sized appliance manufacturer in wisconsin, was struggling with inconsistent insulation in their commercial freezers. their old polyol system led to voids and delamination, causing energy spikes and warranty claims. enter suprasec 2379.

they retrofitted their pip line to use suprasec 2379 with a 1:1.05 isocyanate index and adjusted the mixing temperature to 25°c for optimal flow.

performance gains:

parameter	old system	suprasec 2379	change
energy consumption (kwh/yr)	2,450	1,980	▼ 19.2%
foam density variation	±8%	±2.3%	▼ 71% more consistent
warranty claims (per 1k units)	14	3	▼ 78.6%
cycle time (seconds)	110	92	▲ 16% faster

source: internal arcticcool qa report, "insulation system upgrade evaluation," 2023

“we went from getting angry calls about frost buildup to… well, silence,” said qa lead maria chen. “and in manufacturing, silence means you’re doing something right.”

🏭 case study 3: industrial chiller retrofit (shanghai, 2023)

a pharmaceutical plant in shanghai needed to upgrade its aging chillers. the original insulation had degraded, leading to heat gain and compressor overwork. replacing the entire unit wasn’t feasible—so they opted for a foam-in-place retrofit using suprasec 2379.

technicians drilled small ports into the chiller casing, injected the foam at 2 bar pressure, and let it expand. the foam adhered perfectly to the curved metal surfaces and even sealed minor corrosion gaps.

post-retrofit metrics:

indicator	pre-retrofit	post-retrofit	impact
surface temp (°c)	18.5	8.2	▼ 10.3°c drop
compressor runtime (hrs/day)	18.7	14.3	▼ 4.4 hrs saved
annual energy cost (usd)	$12,600	$9,100	$3,500 saved
co₂ emissions (tons/year)	48.2	35.1	▼ 27.2% reduction

source: shanghai institute of energy efficiency, "retrofit insulation in industrial hvac systems," 2024

one technician summed it up: “it’s like giving an old dog a new coat. the chiller didn’t know what hit it.”

🔍 why suprasec 2379 works so well

let’s geek out for a second. what makes this foam so effective?

low viscosity (pre-cure): flows like honey on a warm day—perfect for filling complex geometries.
high reactivity: cures fast without sacrificing cell structure. no waiting around like your bread in the toaster.
hydrophobic nature: repels water like a cat avoids baths. critical in humid environments.
dimensional stability: doesn’t shrink or crack over time. unlike some foams that promise “permanent” insulation and vanish like your new year’s resolutions.

and yes, it’s compatible with common blowing agents like hfc-245fa and newer hfo blends (e.g., solstice lba), helping manufacturers meet tightening environmental regulations.

🌍 global adoption & industry trends

suprasec 2379 isn’t just a niche player. according to a 2023 market analysis by smithers rapra, rigid polyurethane foams now account for over 60% of insulation in eu-appliances and 45% in north american construction panels. suprasec systems, including 2379, hold a notable share—especially in high-performance segments.

in asia, adoption is rising fast. a 2024 survey by the china polyurethane industry association found that 78% of appliance oems in guangdong and jiangsu provinces have switched to systems for improved energy efficiency.

⚠️ caveats & best practices

no material is perfect. suprasec 2379 has a few quirks:

moisture sensitivity: the isocyanate component hates water. store components in dry conditions—think of it as a grumpy cat that hates rain.
mixing ratio: must be precise. even a 5% deviation can lead to soft spots or brittleness. use calibrated metering machines—no eyeballing!
ventilation required: during application, isocyanate fumes need proper extraction. safety first, folks.

recommends using impingement mixing heads and maintaining component temperatures between 20–25°c for consistent results.

✅ final thoughts

suprasec 2379 isn’t the flashiest material on the shelf. it won’t win beauty contests. but in the world of construction and appliances, performance trumps looks every time.

from scandinavian passive houses to wisconsin freezers and shanghai chillers, this foam has proven it can deliver energy savings, structural integrity, and long-term reliability—all while curing faster than your morning coffee cools.

so next time you walk into a cozy building or open a frost-free freezer, take a moment to appreciate the quiet hero behind the walls: a little foam that works harder than most of us do before noon.

📚 references

advanced materials. suprasec 2379 technical data sheet, 2023.
nordic building research institute. thermal performance of polyurethane-insulated prefab walls, report no. nbri-2023-04, 2023.
arcticcool inc. internal qa report: insulation system upgrade evaluation, milwaukee, wi, 2023.
shanghai institute of energy efficiency. retrofit insulation in industrial hvac systems, technical bulletin siee-tb-2024-07, 2024.
smithers rapra. global rigid polyurethane foam market outlook 2023–2028, 2023.
china polyurethane industry association. survey on insulation material usage in appliance manufacturing, 2024.
zhang, l., & wang, h. energy efficiency in cold chain equipment: role of advanced insulation, journal of thermal engineering, vol. 19, no. 4, pp. 210–225, 2022.

dr. elena ramirez is a materials engineer with 15 years of experience in polymer applications. when not geeking out over foam cells, she enjoys hiking, sourdough baking, and arguing about the best type of insulation (spoiler: it’s polyurethane). 🧫🔧

sales contact : [email protected]
=======================================================================

about us company info

we provide our customers in the polyurethane foam, coatings and general chemical industry with the highest value products.

=======================================================================

contact information:

contact: ms. aria

cell phone: +86 - 152 2121 6908

email us: [email protected]

location: creative industries park, baoshan, shanghai, china

=======================================================================

other products:

nt cat t-12: a fast curing silicone system for room temperature curing.
nt cat ul1: for silicone and silane-modified polymer systems, medium catalytic activity, slightly lower activity than t-12.
nt cat ul22: for silicone and silane-modified polymer systems, higher activity than t-12, excellent hydrolysis resistance.
nt cat ul28: for silicone and silane-modified polymer systems, high activity in this series, often used as a replacement for t-12.
nt cat ul30: for silicone and silane-modified polymer systems, medium catalytic activity.
nt cat ul50: a medium catalytic activity catalyst for silicone and silane-modified polymer systems.
nt cat ul54: for silicone and silane-modified polymer systems, medium catalytic activity, good hydrolysis resistance.
nt cat si220: suitable for silicone and silane-modified polymer systems. it is especially recommended for ms adhesives and has higher activity than t-12.
nt cat mb20: an organobismuth catalyst for silicone and silane modified polymer systems, with low activity and meets various environmental regulations.
nt cat dbu: an organic amine catalyst for room temperature vulcanization of silicone rubber and meets various environmental regulations.