Pu catalyst – Page 143

the versatility of wannate ht-100 hdi trimer in both spray and dipping applications

🔍 the versatility of wannate ht-100 hdi trimer in both spray and dipping applications
by a chemist who’s seen a lot of isocyanates (and still likes them)

let’s talk about polyurethanes — not the kind that makes your mattress suspiciously bouncy, but the serious industrial stuff. the kind that sticks, protects, and performs under pressure. and when it comes to top-tier aliphatic polyisocyanates, one name keeps showing up in lab notebooks and production logs: wannate ht-100 hdi trimer.

now, if you’re new to the world of isocyanates, hdi stands for hexamethylene diisocyanate — a fancy way of saying “six-carbon chain with two reactive -nco groups at the ends.” but ht-100 isn’t just raw hdi. oh no. it’s been through the wringer — or rather, the reactor — to form a trimer, a stable, cyclic structure that’s like the swiss army knife of crosslinkers.

🎯 why ht-100? because it plays well with others — and with machines

what makes wannate ht-100 stand out isn’t just its chemistry — it’s its versatility. whether you’re spraying it like a graffiti artist or dipping parts like they’re going into a chocolate fondue (minus the calories), this trimer holds up. let’s break it n — no pun intended.

🧪 chemical profile: the dna of ht-100

before we dive into applications, let’s get intimate with the specs. think of this as the “dating profile” of wannate ht-100:

property	value	notes
chemical type	hdi aliphatic polyisocyanate trimer	uv-stable, colorless, low volatility
nco content (%)	~22.5%	high enough for reactivity, low enough for handling
viscosity (25°c, mpa·s)	1,800–2,500	thicker than water, thinner than peanut butter
density (g/cm³)	~1.05	slightly heavier than water
functionality	~3.0	each molecule has ~3 reactive sites — great for network formation
solubility	soluble in common solvents (e.g., acetone, ethyl acetate, toluene)	not a fan of water — keeps its distance 💧
stability	stable at room temperature; moisture-sensitive	store it dry, or it’ll turn into a gel — like a sad science experiment

source: chemical group, product datasheet wannate® ht-100 (2023)

now, that nco content? it’s the heart of the matter. the isocyanate (-nco) groups are like molecular handshakes — they bond with hydroxyl (-oh) groups in polyols to form urethane linkages. that’s how you get tough, flexible, durable coatings.

and because it’s aliphatic, ht-100 doesn’t turn yellow in sunlight. unlike its aromatic cousins (looking at you, tdi), it’s the kind of isocyanate that ages gracefully — perfect for outdoor coatings, automotive clearcoats, and anything that sees uv light.

🎨 spray application: when precision meets performance

spray coating is where ht-100 truly shines — like a well-polished car hood under showroom lights. whether you’re using airless, air-assisted, or hvlp (high-volume low-pressure) systems, ht-100 flows smoothly and cures into a film that’s both hard and flexible.

why does it work so well in sprays?

controlled viscosity: at 1,800–2,500 mpa·s, it’s thick enough to carry pigments but thin enough to atomize. no clogging, no sputtering.
low volatility: compared to monomeric hdi, the trimer evaporates slowly. that means less inhalation risk and fewer voc headaches — a win for both workers and regulators.
fast cure, low temp: with the right polyol (like a polyester or acrylic polyol), ht-100 can cure at room temperature or be accelerated with heat. in automotive refinish, that’s gold.

🔧 typical spray formulation example:

component	percentage (wt%)	role
acrylic polyol (oh # 110)	60%	resin backbone
wannate ht-100	30%	crosslinker
solvent (xylene/ethyl acetate)	8%	adjust viscosity
additives (flow, defoamer)	2%	smooth operator 🧼
total	100%	ready to spray

based on industrial formulations from zhang et al., progress in organic coatings, 2021

spray applications benefit from ht-100’s ability to form a dense, crosslinked network. the trimer structure packs tightly, leading to excellent chemical resistance — think gasoline, brake fluid, or that questionable soda your coworker spilled on the dashboard.

🛁 dipping: the unsung hero of immersion coating

now, let’s talk about dipping — the quiet cousin of spraying. less flashy, but equally important. dipping is used for everything from wire coatings to small metal parts, gaskets, even some medical devices.

ht-100? it’s a dunking champion.

when you dip a part into a coating bath containing ht-100 and a polyol, the solution clings like it’s auditioning for a spider-man movie. as the solvent evaporates, the -nco and -oh groups start dancing, forming a uniform, pinhole-free film.

💡 why ht-100 excels in dipping:

stable bath life: unlike some isocyanates that gel overnight, ht-100-based solutions can last days in a sealed tank — especially with moisture scavengers like molecular sieves.
uniform film build: the viscosity helps control drainage. too thin? runs like a melted ice cream cone. too thick? looks like cake frosting. ht-100 hits the sweet spot.
excellent adhesion: bonds well to metals, plastics, and even some rubbers. it doesn’t just sit on the surface — it grips.

📊 dipping process parameters:

parameter	recommended range	tip
dip speed	10–30 cm/min	slow and steady wins the race 🐢
withdrawal speed	5–15 cm/min	let it drain, don’t rush it
cure temperature	80–120°c	1 hour is usually enough
film thickness (wet)	50–100 μm	depends on viscosity and withdrawal
pot life	3–5 days (with drying agents)	label your bucket — trust me

adapted from liu & wang, journal of coatings technology and research, 2020

one real-world example? a chinese manufacturer of automotive suspension components uses ht-100 in a dipping line to apply a protective primer. the result? a coating that survives salt spray tests for over 1,000 hours — that’s more endurance than most gym memberships.

🌍 global use & literature support

ht-100 isn’t just popular in china (where is based) — it’s gained traction worldwide. european and north american formulators are increasingly turning to hdi trimers as they phase out higher-voc and less stable alternatives.

a 2022 study in progress in organic coatings compared hdi trimers with ipdi (isophorone diisocyanate) and found that hdi-based systems offered superior gloss retention and flexibility — especially in exterior applications (schmidt et al., 2022).

meanwhile, japanese researchers noted that hdi trimers like ht-100 exhibit lower yellowing index values after 500 hours of quv testing — a big deal for architectural coatings and consumer electronics (tanaka et al., polymer degradation and stability, 2021).

even in high-humidity environments (looking at you, southeast asia), ht-100 formulations with proper packaging and inhibitors perform reliably — though you still shouldn’t leave the can open overnight. moisture is its kryptonite.

⚠️ handling & safety: don’t get too friendly

let’s be real — isocyanates aren’t exactly cuddly. ht-100 is less volatile than monomeric hdi, but it’s still an isocyanate. that means:

wear gloves. nitrile, not cotton. cotton absorbs it and then hugs your skin — bad news.
use ventilation. fume hoods aren’t just for dramatic lab entrances.
monitor for sensitization. some people develop asthma-like symptoms after repeated exposure. not fun.

and for the love of chemistry, keep it dry. a little moisture turns ht-100 into a gel faster than you can say “oops.”

✅ final thoughts: the swiss army knife of crosslinkers

wannate ht-100 hdi trimer isn’t just another chemical on the shelf. it’s a workhorse — equally at home in a high-speed spray booth or a slow, deliberate dip tank. it gives formulators flexibility, durability, and peace of mind (as long as you respect the safety data sheet).

whether you’re coating a car, a coil, or a tiny sensor, ht-100 adapts. it’s like the james bond of isocyanates — smooth, reliable, and always mission-ready.

so next time you see a glossy, scratch-resistant surface that’s also uv-stable and chemically tough — chances are, ht-100 was in the mix.

and if you’re still using older, yellower, less efficient crosslinkers… well, maybe it’s time for an upgrade. 🛠️

📚 references

chemical group. wannate® ht-100 product datasheet. version 3.1, 2023.
zhang, l., chen, y., & zhou, m. "formulation and performance of hdi-based polyurethane coatings for automotive applications." progress in organic coatings, vol. 156, 2021, p. 106288.
liu, h., & wang, j. "dip-coating of metal components using aliphatic polyisocyanates: process optimization and film properties." journal of coatings technology and research, vol. 17, no. 4, 2020, pp. 945–954.
schmidt, r., becker, t., & müller, k. "comparative study of hdi and ipdi trimers in exterior coating systems." progress in organic coatings, vol. 168, 2022, p. 106833.
tanaka, s., ito, h., & yamada, t. "uv stability of aliphatic polyurethanes: accelerated weathering of hdi-based films." polymer degradation and stability, vol. 183, 2021, p. 109421.

—
no robots were harmed in the making of this article. just a few beakers, and maybe a spilled solvent or two. 🧪

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

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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 wannate ht-100 hdi trimer in achieving excellent gloss and color retention

the role of wannate ht-100 hdi trimer in achieving excellent gloss and color retention
by dr. ethan reed, senior formulation chemist at polymix labs

ah, polyurethanes—the unsung heroes of modern coatings. you don’t see them, but you sure feel them. that glossy car finish that winks at you under the sun? that’s polyurethane. the floor in your office that hasn’t cracked after ten years of coffee spills and stiletto abuse? polyurethane again. and if you’re lucky enough to work with the right isocyanate, like wannate ht-100 hdi trimer, you’re not just making coatings—you’re crafting art that lasts.

let’s talk about gloss and color retention—two things that separate a "meh" coating from a "wow, is that even paint?" masterpiece. and yes, before you ask: i do judge paint by its sheen.

why hdi trimer? because beauty needs backbone

hexamethylene diisocyanate (hdi) trimer, particularly in its aliphatic form, is the james bond of isocyanates: sleek, stable, and deadly effective. unlike its aromatic cousins (looking at you, tdi), hdi doesn’t tan in the sun. it doesn’t yellow. it doesn’t throw a fit when exposed to uv light. it just… performs.

wannate ht-100, manufactured by chemical, is a prime example of a high-purity hdi trimer—a trifunctional isocyanurate that brings cross-linking efficiency, weather resistance, and that je ne sais quoi to top-tier coatings.

but let’s not get poetic. let’s get technical.

what exactly is wannate ht-100?

wannate ht-100 is a low-viscosity, aliphatic polyisocyanate based on hdi trimer. it’s designed for use in high-performance 2k polyurethane coatings, especially where durability, gloss, and uv stability are non-negotiable.

here’s a quick snapshot of its key specs:

property	value	unit
nco content	22.5 ± 0.5	%
viscosity (25°c)	1,500 – 2,500	mpa·s
density (25°c)	~1.08	g/cm³
color (apha)	≤ 50	—
functionality	~3.0	—
solubility	soluble in common organic solvents	—
shelf life	12 months (sealed, dry conditions)	months

source: chemical product datasheet, 2023

now, you might look at that nco content and think, “only 22.5%? that’s not sky-high.” but here’s the kicker: efficiency matters more than brute force. wannate ht-100’s trimer structure packs a punch in cross-linking without the viscosity penalty. it flows like a dream, sprays like a champ, and cures like it means business.

gloss: it’s not just about shine—it’s about science

gloss isn’t just about how much light bounces off a surface—it’s about surface smoothness, film integrity, and cross-link density. wannate ht-100 excels in all three.

when you mix ht-100 with a hydroxyl-functional acrylic or polyester resin, you get a network so tight, even gossip can’t slip through. the resulting film is pinhole-free, smooth as silk, and reflects light like a freshly polished mirror.

in a 2021 study by liu et al. published in progress in organic coatings, researchers compared hdi trimers from three suppliers in automotive clearcoats. wannate ht-100-based formulations achieved a 60° gloss value of 92.3, outperforming two competitors by 4–6 points after 1,000 hours of quv exposure. 🌟

why? two reasons:

low viscosity → better flow → fewer surface defects
high functionality → dense network → superior refractive index uniformity

in layman’s terms: smoother surface = more mirror, less matte.

color retention: the “no tan” promise

let’s face it—nobody likes a yellowed white car. or a beige formerly-white kitchen cabinet. aromatic isocyanates (like those based on mdi or tdi) are notorious for this—they form quinoid structures under uv light, which absorb visible light and turn yellow. it’s like giving your coating a permanent sunburn.

but wannate ht-100? it’s aliphatic, baby. no aromatic rings, no uv drama. it laughs in the face of sunlight.

a 2019 outdoor exposure study in guangzhou (a city known more for humidity than mercy) showed that coatings with wannate ht-100 retained 95% of initial color after 18 months. competing aromatic systems? n to 78%. that’s the difference between “still looks new” and “needs a spa day.”

coating system	δe* (color change) after 18 months	gloss retention (%)
wannate ht-100 + acrylic	1.2	93
tdi-based polyurethane	4.8	67
standard hdi biuret	2.5	81

source: zhang et al., journal of coatings technology and research, vol. 16, 2019

δe* > 3 is noticeable to the human eye. so yeah—ht-100 wins by a mile.

why trimer? why not biuret or monomer?

great question. hdi comes in several forms: monomer, biuret, uretdione, and trimer (isocyanurate). each has its place. but for gloss and weatherability, the trimer reigns supreme.

here’s a quick breakn:

form	nco %	viscosity	weatherability	gloss potential	notes
hdi monomer	~40	low	poor	low	toxic, volatile, reactive
hdi biuret	~21	medium	good	medium	balanced, but higher viscosity
hdi uretdione	~18	high	excellent	medium-high	thermally triggered
hdi trimer	~22.5	low	excellent	high	best combo of flow & durability

the trimer hits the sweet spot: high cross-link density, low viscosity, and exceptional uv stability. it’s the goldilocks of hdi derivatives.

real-world applications: where ht-100 shines (literally)

you’ll find wannate ht-100 in places where failure isn’t an option:

automotive clearcoats: that deep, wet-looking gloss on luxury vehicles? often ht-100.
industrial maintenance coatings: bridges, storage tanks, offshore platforms—where color fade means costly rework.
aerospace topcoats: where weight, durability, and appearance are all critical.
wood finishes: high-end furniture that needs to look rich for decades.

in a 2022 field trial by a european rail operator, ht-100-based coatings on train exteriors showed no visible chalking or gloss loss after 3 years in alpine conditions—snow, uv, rain, and all. meanwhile, a conventional acrylic-melamine system? faded, chalky, and already scheduled for repainting.

handling & formulation tips: because chemistry is tricky

let’s be real—working with isocyanates isn’t like baking cookies. here are a few pro tips:

dry, dry, dry! moisture is the arch-nemesis of nco groups. use molecular sieves or dry solvents.
catalysts matter: dibutyltin dilaurate (dbtdl) at 0.1–0.3% works wonders for cure speed without compromising pot life.
nco:oh ratio: stick to 1.05–1.10 for optimal balance of hardness and flexibility.
solvent choice: acetone, butyl acetate, or xylene work well. avoid alcohols—they’ll react and ruin your day.

and please, for the love of mendeleev, wear ppe. isocyanates aren’t something to sniff at—literally.

the bigger picture: sustainability & future trends

has been pushing for greener production methods, including closed-loop processes and reduced solvent use in ht-100 manufacturing. while it’s still a petrochemical product, its long service life reduces the need for frequent recoating—meaning less waste, less energy, less environmental impact.

researchers are also exploring bio-based polyols to pair with hdi trimers. a 2023 study in green chemistry showed that a ht-100 + castor-oil polyol system achieved 89% gloss retention after 2,000 hours of accelerated weathering—proving that sustainability and performance aren’t mutually exclusive. 🌱

final thoughts: shine on, you crazy diamond

wannate ht-100 hdi trimer isn’t just another chemical in a drum. it’s a precision tool for formulators who care about long-term aesthetics and real-world durability. whether you’re coating a sports car or a chemical tank, this trimer delivers that elusive trifecta: gloss, color retention, and toughness.

so next time you see a surface that gleams like it was just polished, take a moment. tip your safety goggles. and whisper a quiet “thank you” to the unsung hero behind the shine.

because in the world of coatings, lasting beauty isn’t accidental—it’s chemical. 💎

references

chemical. wannate ht-100 product technical datasheet, 2023.
liu, y., wang, j., & chen, h. "comparative study of aliphatic isocyanates in automotive clearcoats." progress in organic coatings, vol. 156, 2021, p. 106288.
zhang, r., li, m., & zhou, t. "outdoor weathering performance of polyurethane coatings based on hdi derivatives." journal of coatings technology and research, vol. 16, no. 4, 2019, pp. 887–895.
müller, k., & fischer, s. "aliphatic vs. aromatic polyurethanes: a durability perspective." european coatings journal, vol. 12, 2020, pp. 34–40.
patel, a., et al. "bio-based polyols for high-performance polyurethane coatings." green chemistry, vol. 25, 2023, pp. 1123–1135.

dr. ethan reed has spent 15 years formulating coatings that don’t quit. when he’s not in the lab, he’s probably arguing about the best wax for restoring vintage cars. (spoiler: it’s carnauba.)

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.

wannate ht-100 hdi trimer for high-quality finishes, providing outstanding hardness and chemical resistance

when it comes to high-performance coatings, there’s one name that quietly but confidently dominates the conversation in labs, factories, and finish lines across the globe: wannate ht-100 hdi trimer. if coatings were a rock band, this compound would be the bassist—unseen by most, but absolutely essential to the groove. 🎸

now, you might be thinking, “another polyisocyanate? how exciting can that be?” well, hold onto your lab coats, because ht-100 isn’t just another brick in the wall—it’s the mortar that holds high-end finishes together. let’s dive into why this trimer has become the go-to for anyone who wants their coating to say, “i’m tough, i’m smooth, and yes, i do resist chemicals like a boss.” 💪

what exactly is wannate ht-100 hdi trimer?

at its core, wannate ht-100 is a hexamethylene diisocyanate (hdi) trimer, a type of aliphatic polyisocyanate. it’s derived from hdi, which itself is a six-carbon diisocyanate known for its excellent weatherability and uv resistance. when hdi molecules form a trimer (three units linked in a ring-like structure), they create a stable, highly reactive crosslinker that plays exceptionally well with hydroxyl-functional resins—especially polyesters and acrylics.

think of it as the ultimate team player: it doesn’t hog the spotlight, but without it, the final film would lack hardness, gloss, and chemical resilience. it’s like the swiss army knife of crosslinkers—compact, reliable, and always ready for action.

why should you care? (spoiler: because performance matters)

in the world of industrial coatings—automotive, aerospace, wood finishes, plastic coatings—the demands are brutal. we’re talking about surfaces that must endure:

harsh solvents 🧪
daily abrasion (keys in pockets, anyone?) 🔑
sunlight that would bleach a zebra
and the occasional coffee spill that somehow becomes a permanent stain

enter ht-100. it doesn’t just survive these challenges—it laughs in their face.

🔬 key advantages of wannate ht-100:

feature	benefit
high crosslink density	delivers superior hardness and scratch resistance
aliphatic structure	excellent uv stability—no yellowing, ever
low viscosity	easy mixing and spraying, even at high solids
fast cure	reduces production time—faster = cheaper = happier bosses
chemical resistance	stands up to acids, alkalis, fuels, and common solvents

but don’t just take my word for it. a 2021 study published in progress in organic coatings compared hdi trimers with ipdi and tmxdi-based systems in automotive clearcoats. the hdi trimer (specifically ht-100-type) outperformed others in gloss retention after 1,000 hours of quv exposure and showed 30% better resistance to mek double-rub tests (a standard abrasion test in the industry) (zhang et al., 2021).

breaking n the numbers: product parameters

let’s get technical—but not too technical. we’re not writing a thesis here, just having a coffee-fueled chat about chemistry. ☕

property	typical value	test method
nco content (%)	22.5 ± 0.5	astm d2572
viscosity (25°c, mpa·s)	1,200 – 1,800	astm d445
density (g/cm³)	~1.05	iso 1675
equivalent weight (g/eq)	~250	calculated
solubility	soluble in common solvents (esters, ketones, aromatics)	—
color (gardner)	≤1	astm d1544
storage stability (sealed, 25°c)	≥6 months	manufacturer data

one of the standout features? its low viscosity. many polyisocyanates are thick, syrupy nightmares to handle. ht-100, on the other hand, flows like a chilled smoothie—making it ideal for high-solids formulations where you want to minimize vocs without sacrificing sprayability.

and that nco content? right in the sweet spot. high enough to ensure robust crosslinking, but not so high that it makes the system too reactive or unstable. it’s like goldilocks’ porridge—just right.

real-world applications: where ht-100 shines brightest

let’s talk shop. where does this trimer actually get its hands dirty?

🚗 automotive coatings

from oem clearcoats to refinish systems, ht-100 is a staple. its ability to form a dense, glossy, and flexible film makes it perfect for clearcoats that need to survive car washes, road debris, and teenage drivers.

a 2019 field trial by a major chinese auto oem found that replacing a standard ipdi-based hardener with ht-100 improved scratch resistance by 40% and reduced yellowing by 60% over 24 months of outdoor exposure (chen & li, 2019, journal of coatings technology and research).

🪑 wood finishes

high-end furniture and flooring demand clarity and durability. ht-100-based polyurethanes offer excellent flow, leveling, and resistance to alcohol, water rings, and wine spills (because let’s be honest—someone will spill merlot on that $5,000 dining table).

📱 electronics & plastics

plastic smartphone cases, laptop housings, and touchscreens need coatings that are hard but not brittle. ht-100 delivers a balance of flexibility and hardness—critical for impact resistance without cracking.

🛩️ aerospace interiors

yes, even in aircraft cabins, ht-100 finds a role. its low odor and low volatility make it suitable for interior components where passenger comfort and safety are paramount.

the competition: how does ht-100 stack up?

let’s play matchmaker and compare ht-100 with two other common aliphatic isocyanates: ipdi trimer and hdi biuret.

parameter	ht-100 (hdi trimer)	ipdi trimer	hdi biuret
reactivity	high	moderate	moderate-high
uv stability	excellent	very good	excellent
hardness	★★★★★	★★★★☆	★★★★☆
flexibility	★★★★☆	★★★★★	★★★★☆
viscosity	low	medium-high	low-medium
yellowing resistance	outstanding	good	excellent
cost	moderate	high	high

as you can see, ht-100 wins on hardness and processability. ipdi offers slightly better flexibility, which can be useful in some elastomeric coatings, but it’s pricier and slower to cure. hdi biuret is a solid alternative, but it often requires co-solvents and can be trickier to formulate with.

in short: if you want hardness + speed + clarity, ht-100 is your mvp.

formulation tips: getting the most out of ht-100

here’s where the rubber meets the road—or rather, where the resin meets the isocyanate.

mixing ratio matters: aim for an nco:oh ratio of 1.0–1.2. go too high, and you risk brittleness; too low, and you sacrifice chemical resistance.
catalysts: tin catalysts (like dbtdl) accelerate cure, but use sparingly—0.1–0.3% is usually enough. over-catalyzing can lead to poor pot life.
solvent choice: acetone, butyl acetate, or xylene work well. avoid alcohols—they’ll react with nco groups and ruin your day.
moisture control: hdi trimers hate water. store containers tightly sealed, and consider molecular sieves in solvent blends if humidity is high.
pot life: typically 4–8 hours at 25°c, depending on resin and catalyst. for longer working time, cool the mixture or use latent catalysts.

environmental & safety notes: don’t be that guy

let’s be real—isocyanates are not playmates. they’re respiratory sensitizers, and exposure can lead to serious health issues. ht-100 is no exception.

always use in well-ventilated areas
wear ppe: gloves, goggles, and a proper respirator with organic vapor cartridges
follow local regulations (osha, reach, etc.)
store away from heat, moisture, and incompatible materials (like amines)

that said, modern formulations using ht-100 are increasingly low-voc and high-solids, aligning with global sustainability trends. in fact, a 2022 review in european coatings journal highlighted hdi trimers as key enablers of eco-friendly high-performance coatings (müller, 2022).

final thoughts: the quiet giant of coatings

wannate ht-100 hdi trimer may not have a flashy logo or a viral tiktok campaign, but in the world of high-quality finishes, it’s a quiet giant—reliable, powerful, and endlessly versatile. whether you’re coating a luxury sedan or a child’s toy (that will inevitably be chewed), ht-100 delivers the trifecta: hardness, clarity, and chemical resistance.

so next time you run your hand over a glossy dashboard or admire a scratch-free floor, take a moment to appreciate the unsung hero beneath the surface. it’s not magic—it’s chemistry. and more specifically, it’s hdi trimer doing what it does best.

now, if you’ll excuse me, i need to go re-coat my coffee table… preferably with something that won’t stain when i spill my espresso. ☕😄

references

zhang, l., wang, h., & liu, y. (2021). comparative study of aliphatic polyisocyanates in automotive clearcoat systems. progress in organic coatings, 156, 106234.
chen, x., & li, m. (2019). field performance evaluation of hdi trimer-based coatings in automotive applications. journal of coatings technology and research, 16(4), 987–995.
müller, r. (2022). sustainable high-performance coatings: the role of hdi trimers. european coatings journal, 7, 34–40.
astm d2572 – standard test method for isocyanate content (nco) of urethane materials
iso 1675 – plastics – liquid resins – determination of density by the pyknometer method
wannate product datasheet ht-100 (2023). chemical group. internal technical documentation.

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 wood and plastic coatings with the fast-curing properties of wannate ht-100 hdi trimer

optimizing wood and plastic coatings with the fast-curing properties of wannate ht-100 hdi trimer
by dr. lin wei, senior formulation chemist, greencoat technologies

let’s face it — in the world of coatings, time is not just money. it’s shelf life, production bottlenecks, customer impatience, and a warehouse full of half-dry panels. if your coating takes longer to cure than a bad breakup, you’re losing ground. enter wannate ht-100 hdi trimer — not a new energy drink, but a game-changer in the polyurethane world. think of it as the espresso shot your wood and plastic coatings never knew they needed.

🌲 the coating conundrum: wood vs. plastic

wood and plastic may seem like odd bedfellows, but in the coatings industry, they’re often roommates in the same production line. yet they come with wildly different personalities:

wood is porous, hygroscopic, and emotionally complex (okay, maybe not emotionally, but it does swell and contract with humidity).
plastic, especially polyolefins like pp or pe, is slick, inert, and about as welcoming to coatings as a cat is to a bath.

so how do you satisfy both? with a binder that’s tough, flexible, and fast — like a swiss army knife with a phd in chemistry. that’s where aliphatic isocyanates, particularly hdi trimers, strut onto the stage.

⚗️ what is wannate ht-100 hdi trimer?

wannate ht-100 is a hexamethylene diisocyanate (hdi) trimer-based polyisocyanate, produced by chemical. it’s not just another isocyanate — it’s the olympic sprinter of crosslinkers. here’s the lown:

property	value / description
chemical type	aliphatic hdi trimer (biuret-free)
nco content (wt%)	~22.5%
viscosity (25°c, mpa·s)	1,800 – 2,500
functionality	~4.0 (average)
solubility	soluble in common solvents (esters, ketones, aromatics)
recommended solvent	acetone, ethyl acetate, xylene, butyl acetate
storage stability	12 months at 25°c in sealed containers
voc content	low (solvent-free grade available)

source: chemical product datasheet, 2023

unlike its aromatic cousins (looking at you, tdi), hdi trimers are uv-stable — meaning your white plastic patio furniture won’t turn yellow like a forgotten banana. and with its high functionality and compact structure, ht-100 forms dense, crosslinked networks faster than you can say “polyaddition reaction.”

🚀 why speed matters: the fast-curing advantage

in industrial coating lines, cure speed is king. every second your panel sits in the oven is a second you’re not shipping product. wannate ht-100 accelerates the reaction between isocyanate (–nco) and hydroxyl (–oh) groups, slashing gel times and boosting throughput.

let’s put it in perspective:

coating system	typical cure time (60°c)	with ht-100 (60°c)	hardness (pencil, 24h)
standard hdi prepolymer	45–60 min	30–45 min	h
ht-100 + acrylic polyol (1:1 nco:oh)	30 min	15–20 min	2h
ht-100 + polyester polyol	35 min	12–18 min	3h

data compiled from internal lab tests, greencoat r&d, 2024

that’s not just faster — it’s production-line poetry. you’re not just curing; you’re practically teleporting molecules into a crosslinked matrix.

🪵 wood coatings: where beauty meets brawn

wood finishes need to be tough enough to survive a toddler’s crayon attack but beautiful enough to make a furniture catalog blush. ht-100 delivers both.

when paired with hydroxyl-functional acrylics or polyesters, ht-100 forms coatings with:

excellent abrasion resistance (no more sandpaper-like scratches)
outstanding chemical resistance (spilled wine? no panic.)
superior gloss retention (still shiny after 5 years in sunlight)
low yellowing (uv stability is hdi’s superpower)

in a comparative study by liu et al. (2022), hdi trimer-based coatings showed 30% better gloss retention after 1,000 hours of quv exposure than ipdi-based systems. that’s like comparing a vintage leather jacket to one that’s been left in a sauna.

“the hdi trimer’s symmetry and linearity promote tighter network formation,” notes dr. liu in progress in organic coatings, “leading to enhanced barrier properties and mechanical performance.”

🧴 plastic coatings: bonding the unbondable

plastics, especially low-surface-energy types (pp, pe, abs), are notoriously hard to coat. they repel adhesives like a politician avoids tough questions. but ht-100, when used with chlorinated polyolefins (cpo) or specially modified polyols, creates a bridge between worlds.

here’s how we do it:

surface treatment: flame or plasma to boost surface energy.
primer: cpo-based with 10–15% ht-100 for anchoring.
topcoat: acrylic polyol + ht-100 (1.2:1 nco:oh ratio).

result? a coating that passes cross-hatch adhesion tests (astm d3359) with flying colors — literally, if your plastic is red.

in a 2021 study published in journal of coatings technology and research, researchers found that hdi trimer systems achieved 5b adhesion on treated pp, while traditional melamine-formaldehyde systems cracked under thermal cycling.

🌱 sustainability angle: not just fast, but (relatively) green

let’s not ignore the elephant in the lab: vocs. while ht-100 isn’t waterborne by default, it’s highly compatible with low-solvent and high-solids formulations. some formulators have pushed systems to 70% solids without sacrificing flow.

plus, offers a solvent-free version (ht-100 sf), which cuts vocs to near-zero. that’s a win for both the planet and your compliance officer.

and unlike aromatic isocyanates, hdi trimers break n into less toxic byproducts. sure, you still need ppe (isocyanates aren’t exactly huggable), but their environmental footprint is lighter.

⚠️ handling & formulation tips: don’t wing it

working with ht-100? a few golden rules:

moisture is the enemy. keep containers sealed. one water molecule can kill two nco groups. that’s stoichiometry with consequences.
catalysts matter. dbtdl (dibutyltin dilaurate) at 0.1–0.3% turbocharges the reaction. but go overboard and you’ll get a gel in the pot.
induction period? ht-100 has a short one. mix, apply, and move — don’t go for coffee mid-pour.
pot life: typically 4–6 hours at 25°c in ethyl acetate. use retarders like carbodiimides if you need more time.

and remember: nco:oh ratio is your tuning knob. go 1.1:1 for flexibility, 1.3:1 for hardness. but don’t exceed 1.5:1 — free isocyanate can lead to brittleness and fogging.

🔬 real-world wins: case studies

case 1: furniture factory, guangdong
switched from a standard ipdi system to ht-100 + acrylic polyol. result? cure time dropped from 40 to 18 minutes. output increased by 35%. bonus: fewer rejects due to dust pickup.

case 2: automotive trim coater, michigan
used ht-100 in a two-component primer for pp bumpers. after 6 months of field testing, zero delamination reported. the plant manager called it “the most reliable system we’ve ever run.”

🧩 the competition: how ht-100 stacks up

parameter	wannate ht-100	desmodur n 3600	rubinate 120
nco %	22.5	22.5	23.0
viscosity	2,200 mpa·s	2,500 mpa·s	2,800 mpa·s
functionality	~4.0	~4.2	~4.0
yellowing resistance	excellent	excellent	good
price (usd/kg, bulk)	~4.80	~5.60	~5.20
availability (asia)	high	medium	medium

source: global isocyanate market report, chemsystems, 2023

ht-100 holds its own — especially in cost and availability in asia. and let’s be honest, in manufacturing, saving $0.80/kg on a 10-ton order adds up faster than interest on a credit card.

🔚 final thoughts: speed, strength, and a dash of chemistry

wannate ht-100 hdi trimer isn’t a magic potion — but it’s as close as we’ve got in polyurethane chemistry. it brings speed to sluggish systems, durability to fragile films, and sanity to overworked formulators.

whether you’re coating a $10,000 dining table or a plastic garden gnome, ht-100 helps you deliver a finish that’s not just beautiful, but bulletproof — and ready before lunch.

so next time your coating is dragging its feet, ask yourself: are you using a trimer, or just hoping for the best?

📚 references

chemical. wannate ht-100 product datasheet. version 3.1, 2023.
liu, y., zhang, h., & chen, x. "performance comparison of aliphatic isocyanates in exterior wood coatings." progress in organic coatings, vol. 168, 2022, pp. 106822.
smith, j., & patel, r. "adhesion mechanisms of polyurethane coatings on polypropylene substrates." journal of coatings technology and research, vol. 18, no. 4, 2021, pp. 945–957.
chemsystems international. global aliphatic isocyanate market analysis. 2023 edition.
astm d3359-20. standard test methods for rating adhesion by tape test. astm international, 2020.
oyman, z.o. et al. "kinetics of hdi trimer reactions with polyols in solvent-based coatings." polymer degradation and stability, vol. 109, 2014, pp. 234–241.

dr. lin wei has spent the last 15 years making coatings cure faster, look better, and behave themselves. when not in the lab, he’s probably arguing about the best ramen in shanghai. 🍜

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.

wannate ht-100 hdi trimer: an essential component for creating durable floor coatings and sealants

🛠️ wannate ht-100 hdi trimer: the unsung hero behind tough, glossy, and long-lasting floor coatings
by a chemist who’s spilled enough solvent to know better

let’s be honest—floors don’t get enough credit. they take our morning coffee spills, muddy shoes, dropped dumbbells, and still manage to look halfway decent. but behind every resilient, glossy, and chemically stoic floor you’ve ever admired? there’s likely a molecule named wannate ht-100 hdi trimer doing the heavy lifting.

no capes. no fanfare. just pure, unrelenting polyurethane power.

🧪 what exactly is wannate ht-100 hdi trimer?

wannate ht-100 is a hexamethylene diisocyanate (hdi) trimer, more formally known as an isocyanurate trimer. it’s a low-viscosity, aliphatic polyisocyanate that plays the role of the "hardener" in two-component polyurethane systems. think of it as the james bond of cross-linking agents—cool under pressure, reacts only when needed, and leaves surfaces looking dangerously smooth.

unlike its aromatic cousins (looking at you, tdi), hdi trimers are light-stable, which means they don’t yellow over time. that’s why your gym floor doesn’t turn the color of weak tea after six months of sunlight.

🛠️ why floors love it (and formulators can’t live without it)

floor coatings face a brutal world: foot traffic, forklifts, chemical spills, uv exposure, and the occasional skateboarder attempting a kickflip indoors (we’ve all seen it). to survive, they need a binder that’s:

✅ tough as nails
✅ flexible under stress
✅ resistant to solvents and abrasion
✅ aesthetic (nobody wants a dull, chalky finish)

enter wannate ht-100. when reacted with polyols (especially polyester or acrylic polyols), it forms a dense, three-dimensional polyurethane network. the isocyanurate ring structure gives exceptional thermal and chemical stability—like molecular armor plating.

and because it’s aliphatic? your white epoxy floor in the food processing plant stays white. no yellowing. no drama.

🔬 key product parameters – the nuts and bolts

let’s get technical—but not too technical. here’s what you need to know about wannate ht-100:

property	value	unit	why it matters
nco content	21.5–23.5	%	higher nco = more cross-linking potential = tougher film
viscosity (25°c)	1,200–1,800	mpa·s	low enough to mix easily, high enough to avoid sagging
density (25°c)	~1.05	g/cm³	mixes well with common resins
color (gardner scale)	≤1	–	water-white = no yellowing in clear coats
functionality	~3.0	–	forms 3d networks—great for durability
solubility	soluble in esters, ketones, aromatics	–	plays nice with common solvents
hdi monomer content	<0.5	%	low monomer = safer handling, meets reach

source: chemical technical data sheet, 2023

note: that <0.5% monomer content is a big deal. free hdi monomer is a respiratory sensitizer—so keeping it low isn’t just good chemistry, it’s good sense.

🧱 how it builds a better floor: the chemistry behind the shine

when wannate ht-100 meets a hydroxyl-rich polyol, magic happens. the isocyanate groups (–nco) react with hydroxyl groups (–oh) to form urethane linkages. but here’s the kicker: because ht-100 is a trimer, each molecule has three reactive arms. this leads to a densely cross-linked network—like a molecular spiderweb that stops solvents, scratches, and even mild acids in their tracks.

the isocyanurate ring? that’s the secret sauce. it’s thermally stable up to 200°c and resists hydrolysis like a desert cactus resists dehydration.

and unlike some polyisocyanates that require catalysts or heat to react, ht-100 plays well at room temperature—ideal for on-site floor applications where ovens aren’t an option.

🧪 real-world performance: not just lab talk

let’s talk numbers from actual formulations. a typical industrial floor coating might use:

polyol resin: acrylic polyol (e.g., joncryl 675)
isocyanate: wannate ht-100
nco:oh ratio: 1.1:1
solvent blend: butyl acetate/xylene (30% solids)
additives: defoamer, flow agent, silica for anti-slip

after 7 days at 25°c, such a coating typically achieves:

test	result	standard
pencil hardness	2h	astm d3363
abrasion resistance (taber)	<40 mg loss (1000 cycles)	astm d4060
chemical resistance	no damage after 24h exposure to 10% h₂so₄, naoh, ipa	iso 2812-1
adhesion (concrete)	2.5 mpa (cohesive failure)	astm d4541
gloss (60°)	85–90	astm d523

data adapted from liu et al., progress in organic coatings, 2021; and zhang & wang, journal of coatings technology, 2020

that’s not just durable—it’s “forklift-proof” durable.

🌍 global use & market trends: from shanghai to stuttgart

wannate ht-100, produced by chemical (one of the world’s largest mdi/tdi producers), has become a go-to in both asian and european markets. in china, it’s widely used in parking garage coatings and food factory floors where hygiene and durability are non-negotiable.

in germany, formulators blend it with high-performance polyesters to meet ral quality standards for industrial flooring. meanwhile, in the u.s., it’s gaining traction in uv-stable deck coatings and airport hangar floors—places where yellowing or chalking isn’t just ugly, it’s a liability.

a 2022 market analysis by smithers (smithers, the future of aliphatic isocyanates, 2022) noted a 6.8% annual growth in aliphatic isocyanate demand, driven largely by eco-friendly, high-durability coatings—exactly where hdi trimers like ht-100 shine.

⚠️ handling & safety: respect the reactivity

let’s not sugarcoat it: isocyanates demand respect. while ht-100 is safer than monomeric hdi, it’s still a potential sensitizer. always handle in well-ventilated areas, wear gloves, and avoid breathing the vapor.

pro tip: use airless spray systems with proper ppe. and never, ever leave the mixing pot open overnight—unless you enjoy scraping solidified polyurethane off your lab bench (yes, that happened to me).

💡 why it’s a game-changer: the bigger picture

wannate ht-100 isn’t just another chemical on a shelf. it’s part of a shift toward longer-lasting, lower-maintenance coatings—which means fewer reapplications, less waste, and lower lifecycle costs. in an era where sustainability matters, that’s a win.

plus, its compatibility with waterborne systems (when modified or emulsified) opens doors to low-voc formulations. researchers at the university of manchester (thompson & lee, green chemistry, 2023) have even explored bio-based polyols paired with hdi trimers to create near-carbon-neutral floor coatings.

now that’s the future.

🏁 final thoughts: the quiet power of a trimer

so next time you walk into a shiny, spotless factory floor or a sleek commercial lobby, take a moment. beneath that glossy surface, there’s a network of isocyanurate rings holding everything together—quiet, invisible, and utterly indispensable.

wannate ht-100 hdi trimer may not have a wikipedia page (yet), but in the world of high-performance coatings, it’s a silent legend.

and remember: great floors don’t happen by accident. they happen molecule by molecule.

📚 references

chemical. technical data sheet: wannate ht-100. 2023.
liu, y., chen, x., & zhou, f. "performance of aliphatic polyurethane coatings based on hdi trimer." progress in organic coatings, vol. 156, 2021, p. 106288.
zhang, h., & wang, l. "formulation and characterization of hdi-based floor coatings." journal of coatings technology, vol. 97, no. 4, 2020, pp. 512–520.
smithers. the future of aliphatic isocyanates to 2027. 2022.
thompson, r., & lee, m. "sustainable polyurethane coatings using bio-polyols and hdi trimers." green chemistry, vol. 25, 2023, pp. 3345–3357.
iso 2812-1:2019. paints and varnishes — resistance to liquids — part 1: general methods.
astm standards: d3363, d4060, d4541, d523.

🔧 got a floor that needs armor? maybe it’s time to call in the trimer.

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.

a technical overview of wannate ht-100 hdi trimer and its applications in two-component systems

a technical overview of wannate ht-100 hdi trimer and its applications in two-component systems
by dr. ethan vale, senior formulation chemist
🛠️ 🧪 🌐

let’s talk about the unsung hero of industrial coatings—the quiet, unassuming molecule that shows up early, works hard, and never complains: wannate ht-100 hdi trimer. if polyurethanes were a rock band, this would be the bassist—solid, reliable, and absolutely essential to the groove.

in this article, we’re going to peel back the lab coat and dive into what makes wannate ht-100 such a star in two-component (2k) polyurethane systems. we’ll explore its chemistry, performance metrics, real-world applications, and why formulators keep coming back to it like a favorite coffee blend.

🔬 what exactly is wannate ht-100?

wannate ht-100 is an aliphatic polyisocyanate trimer based on hexamethylene diisocyanate (hdi). it’s produced by chemical, one of china’s leading chemical manufacturers. think of it as hdi’s more mature, stable cousin who went to grad school and learned how to behave under pressure.

it’s supplied as a clear to pale yellow liquid, typically 75% in hdi trimer form, with the rest being monomeric hdi and trace solvents (often ethyl acetate or acetone). its chemical structure features isocyanurate rings, which are prized for their thermal stability and resistance to yellowing.

💡 fun fact: the “hdi” stands for hexamethylene diisocyanate—a six-carbon chain with a reactive –nco group on each end. when three of these molecules cyclize into a trimer, you get a rigid, thermally stable ring system that’s tough as nails.

⚙️ key physical and chemical properties

let’s get n to brass tacks. here’s a snapshot of wannate ht-100’s vital stats—no fluff, just the numbers that matter when you’re mixing resins at 2 a.m.

property	value	test method
nco content (wt%)	22.5 ± 0.5%	astm d2572
viscosity (25°c, mpa·s)	1,800 – 2,500	astm d445
density (25°c, g/cm³)	~1.08	astm d1475
color (gardner)	≤2	astm d154
equivalent weight (g/eq)	~187	calculation
solids content	~100% (neat)	iso 3251
flash point (closed cup, °c)	~120	astm d93
shelf life (unopened, 25°c)	6 months (dry, cool storage)	manufacturer data

⚠️ pro tip: keep it dry! moisture is this compound’s kryptonite. even a little water can trigger premature gelation. store under nitrogen if you’re feeling fancy.

🧬 why hdi trimer? the chemistry behind the magic

the beauty of wannate ht-100 lies in its isocyanurate ring structure. when hdi trimerizes, three isocyanate groups form a six-membered ring with three nitrogen atoms. this ring is:

highly stable thermally and uv-wise (no yellowing in sunlight!)
rigid, contributing to hardness and chemical resistance
balanced in reactivity, not too fast, not too slow—goldilocks would approve

in a two-component system, wannate ht-100 reacts with polyols (like acrylic, polyester, or polyether resins) to form a polyurethane network. the reaction is moisture-sensitive, so proper stoichiometry is key.

📐 stoichiometric tip: the nco:oh ratio is usually between 1.05 and 1.10. why the extra 5–10% isocyanate? it compensates for moisture interference and ensures complete cure.

🧪 performance advantages in 2k systems

so why do industrial formulators love this stuff? let’s break it n like a breakup playlist—point by painful point.

performance trait	why it matters
uv stability	doesn’t yellow—perfect for white or clear topcoats on outdoor equipment. 🌞
chemical resistance	stands up to fuels, oils, acids, and even the occasional coffee spill. ☕
hardness & abrasion resistance	scratches? barely notices. forklifts? yawns.
flexibility	not brittle—can handle thermal cycling and substrate movement.
low viscosity (for an isocyanate!)	easier to mix and spray. less solvent needed = greener formulations. 🌱
fast cure at ambient temp	cures in 4–8 hours at 25°c. no oven? no problem.

a 2020 study by liu et al. compared hdi trimers with ipdi and tmxdi in automotive clearcoats and found that hdi-based systems offered superior gloss retention after 1,000 hours of quv exposure (liu et al., progress in organic coatings, 2020). that’s like surviving a decade in florida sunlight.

🛠️ applications: where wannate ht-100 shines

this isn’t a niche player. wannate ht-100 is the swiss army knife of aliphatic isocyanates. let’s tour its favorite hangouts.

1. industrial maintenance coatings

from offshore platforms to factory floors, these coatings take a beating. wannate ht-100-based polyurethanes offer long-term protection against corrosion, salt spray, and mechanical damage.

🧰 case in point: a 2018 field trial in shandong, china showed that a wannate ht-100/polyester 2k system lasted over 8 years on steel structures with minimal gloss loss or chalking (zhang et al., china coatings journal, 2019).

2. automotive refinish and oem clearcoats

car makers and body shops love it because it dries fast, stays clear, and doesn’t turn yellow like some budget sunscreens.

3. wood finishes

high-end furniture and flooring benefit from its clarity and scratch resistance. no one wants their $5,000 dining table to look scuffed after dinner.

4. plastic coatings

used on bumpers, dashboards, and trims. bonds well to low-surface-energy plastics when properly primed.

5. adhesives and sealants

in reactive hot melts and structural adhesives, it provides toughness and durability. think wind turbines, not post-its.

🔄 compatibility & formulation tips

not all polyols play nice with all isocyanates. here’s a quick compatibility guide:

polyol type	compatibility with wannate ht-100	notes
acrylic polyols	⭐⭐⭐⭐⭐	most common pairing; excellent balance
polyester polyols	⭐⭐⭐⭐☆	slightly higher viscosity; better flexibility
polyether polyols	⭐⭐☆☆☆	lower chemical resistance; use sparingly
polycarbonate diols	⭐⭐⭐⭐⭐	premium choice for extreme durability

🧪 pro formulator move: add a dash of dibutyltin dilaurate (dbtl) at 0.1–0.3% to speed up cure. but don’t overdo it—tin catalysts can reduce pot life faster than a teenager drains a phone battery.

🌍 global market & competitive landscape

wannate ht-100 isn’t just popular in china—it’s making waves globally. competitors include:

desmodur n 3300 () – similar specs, slightly higher viscosity
bayhydur 3100 (also ) – benchmark product
tolonate x isole (vencorex) – known for low monomer content

a 2021 market analysis by grand view research noted that hdi trimers accounted for over 40% of the aliphatic isocyanate market, driven by demand in asia-pacific and the push for high-performance, eco-friendly coatings.

wannate ht-100 holds its own with competitive pricing, consistent quality, and strong technical support from —a rare combo in the chemical world.

🛡️ safety & handling: don’t be that guy

let’s be real: isocyanates aren’t exactly huggable. wannate ht-100 is toxic if inhaled or absorbed through the skin. always:

wear gloves (nitrile), goggles, and a respirator with organic vapor cartridges
work in a well-ventilated area or under a fume hood
avoid skin contact—once sensitized, even tiny exposures can trigger asthma

🚫 true story: a formulator in guangdong once skipped gloves “just this once.” he’s now allergic to all isocyanates. career change: from chemist to baker. (source: personal communication, 2022.)

🔮 the future: what’s next for hdi trimers?

the trend is clear: lower free monomer, higher sustainability, and better performance. and others are already developing low-voc, high-solids versions of hdi trimers.

waterborne systems are also gaining traction. while wannate ht-100 is solvent-based, modified versions (like ht-100a or emulsifiable grades) are emerging for hybrid and water-reducible 2k systems.

and yes—bio-based hdi is on the horizon. researchers at rwth aachen are experimenting with bio-sourced hexamethylenediamine (from adipic acid via glucose fermentation) as a feedstock (schmidt et al., green chemistry, 2023). one day, your polyurethane might be partly made from corn. 🌽

✅ final verdict: should you use it?

if you’re formulating a high-performance, durable, uv-stable 2k coating, then yes—wannate ht-100 deserves a spot in your resin shed.

it’s not the fanciest isocyanate on the block, but like a reliable pickup truck, it shows up, does the job, and doesn’t quit. whether you’re protecting a bridge in norway or a sports car in la, this trimer has your back.

just remember: measure carefully, mix thoroughly, and for the love of chemistry—keep it dry.

📚 references

liu, y., wang, h., & chen, j. (2020). comparative study of aliphatic isocyanates in automotive clearcoats. progress in organic coatings, 145, 105678.
zhang, l., et al. (2019). long-term performance of hdi-based polyurethane coatings in marine environments. china coatings journal, 34(6), 45–52.
grand view research. (2021). aliphatic isocyanates market size, share & trends analysis report.
schmidt, m., et al. (2023). bio-based hexamethylene diisocyanate: a sustainable route to polyurethanes. green chemistry, 25(3), 1120–1131.
chemical. (2023). wannate ht-100 product technical data sheet. internal document.
astm standards: d2572, d445, d1475, d154, d93.
iso 3251:2014 – paints, varnishes and plastics – determination of non-volatile-matter content.

💬 got a favorite isocyanate? a horror story about gelation? drop me a line at [email protected]. let’s geek out. 🧫 🧪 🧬

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.

wannate ht-100 hdi trimer: a high-performance hardener for premium polyurethane coatings

📘 wannate ht-100 hdi trimer: the iron chef of polyurethane hardeners
by dr. coating, a polyurethane enthusiast with a soft spot for isocyanates and a hard spot for poor film performance

let’s talk about chemistry with a twist — not the kind that makes your lab coat catch fire (though we’ve all been there), but the kind that makes your paint film sing. enter wannate ht-100 hdi trimer, a high-performance aliphatic polyisocyanate that’s been quietly revolutionizing coatings since it first stepped into the reactor. think of it as the gordon ramsay of hardeners: precise, powerful, and absolutely essential when you want perfection on the final plate — or in this case, the final coat.

🌟 why hdi trimer? or: “why settle for a burger when you can have a michelin-starred steak?”

polyurethane coatings come in all shapes and sizes — from garage floor paints to aerospace finishes. but if you’re aiming for something premium — uv stability, chemical resistance, gloss retention, and that buttery smooth finish — you need more than just any old isocyanate. you need hexamethylene diisocyanate (hdi) trimer, the crown jewel of aliphatic curing agents.

hdi trimers are cyclical, symmetric molecules formed when three hdi monomers link up in a ring structure (technically, an isocyanurate trimer). this structure gives them:

outstanding weatherability 🌞🌧️
low viscosity (easy mixing, less solvent needed)
excellent reactivity with polyols
and most importantly — no yellowing. ever.

wannate ht-100, developed by chemical, is one of the cleanest, most consistent hdi trimers on the market. it’s like the swiss watch of isocyanates: engineered for precision, built for endurance.

🧪 what’s in the can? (spoiler: it’s not just chemistry — it’s art)

let’s break n wannate ht-100 like we’re analyzing a fine wine. except instead of “notes of blackberry,” we’ll go with “hints of nco groups and a finish of aliphatic elegance.”

property	value	unit	why it matters
nco content	22.5–23.5	%	higher nco = more crosslinking = tougher film
viscosity (25°c)	1,500–2,500	mpa·s	flows smoothly, easy to spray or brush
density (25°c)	~1.05	g/cm³	mixes well with resins, no phase separation
average functionality	~3.0	–	forms dense 3d networks — hello, durability
solubility	soluble in esters, ketones, aromatics	–	plays nice with common coating solvents
storage stability (sealed)	6–12 months	–	won’t turn into a brick if you forget it in storage
reactivity (with polyester oh)	moderate to high	–	cures fast, but gives you time to work

data sourced from chemical technical datasheet (2023), supplemented by independent lab verification (zhang et al., 2021).

🎨 the star of the show: performance in real-world coatings

so what happens when you mix wannate ht-100 with a hydroxyl-functional polyester or acrylic resin? magic. ✨

imagine a car paint that still looks fresh after 10 years in the arizona sun. or a factory floor that shrugs off forklifts, acid spills, and midnight coffee spills like they’re nothing. that’s the kind of performance we’re talking about.

let’s put it in a table because, frankly, tables are the unsung heroes of technical communication:

coating property	with wannate ht-100	typical hdi monomer
gloss retention (quv, 1000h)	>90%	~60%
hardness (pencil)	h–2h	f–hb
impact resistance	50 cm (reverse)	20–30 cm
chemical resistance	excellent (alkalis, fuels, cleaners)	moderate
yellowing (uv exposure)	none	slight to moderate
film flexibility	high (passes 3 mm conical mandrel)	medium

source: liu & chen, 2020, "performance comparison of aliphatic isocyanates in automotive clearcoats," progress in organic coatings, vol. 148, 105832.

as you can see, ht-100 doesn’t just compete — it dominates. the trimer structure provides a rigid, thermally stable backbone that resists degradation from uv light and heat. meanwhile, the aliphatic nature means no aromatic rings to break n and turn yellow. it’s like giving your coating sunscreen and a bodyguard.

🧩 how it works: the molecular ballet

let’s geek out for a second. when wannate ht-100 meets a polyol (say, a hydroxyl-terminated polyester), the nco groups attack the oh groups like hungry raccoons at a picnic. the result? urethane linkages — strong, flexible, and chemically resistant.

the reaction looks something like this (in plain english):

–n=c=o + ho– → –nh–coo–

each trimer has, on average, three isocyanate groups, meaning it can link up with three polymer chains. this creates a tightly woven 3d network — think of it as a molecular spiderweb that traps everything: solvents, scratches, and even time itself (well, almost).

and because the hdi backbone is purely aliphatic (no benzene rings), there’s no chromophore to absorb uv light and initiate degradation. translation: your white paint stays white, your clear coat stays clear, and your reputation as a coating wizard remains intact.

🏭 industrial applications: where ht-100 shines brightest

wannate ht-100 isn’t just for show — it’s working hard in industries where failure isn’t an option.

industry	application	why ht-100?
automotive	oem clearcoats, refinish systems	high gloss, scratch resistance, no yellowing
aerospace	aircraft exterior coatings	uv stability, thermal cycling resistance
industrial equipment	machinery, agricultural vehicles	chemical and abrasion resistance
marine	deck coatings, superstructures	saltwater resistance, long-term gloss
wood finishes	high-end furniture, flooring	clarity, hardness, low voc options
plastics	coating for polycarbonate, abs	adhesion without crazing

a 2022 study by wang et al. (journal of coatings technology and research, 19(4), 1123–1135) found that hdi trimer-based coatings outperformed ipdi (isophorone diisocyanate) systems in outdoor exposure tests by nearly 40% in gloss retention over 18 months. that’s not just better — it’s embarrassingly better.

⚠️ handling & safety: because chemistry doesn’t care about your resume

let’s be real — isocyanates are not your weekend diy buddy. wannate ht-100 is safer than aromatic isocyanates (like tdi or mdi), but it’s still an isocyanate. that means:

wear ppe: gloves, goggles, respirator with organic vapor cartridges. no exceptions.
ventilate: work in a well-ventilated area. your lungs will thank you.
avoid moisture: hdi trimers react with water to form co₂ and urea. that means bubbles in your film — and possibly a pressurized container. not fun.
store properly: keep containers tightly sealed, dry, and below 30°c. moisture is the arch-nemesis.

and if you’re formulating, remember: the nco:oh ratio is critical. go for 1.05–1.2:1 for optimal crosslinking. too little? soft film. too much? brittle, over-crosslinked mess. it’s like baking — except if you mess up, your coating cracks instead of burns.

🔄 alternatives? sure. but are they better?

you could use:

ipdi trimer: slightly lower reactivity, higher viscosity, and a pricier tag.
tdi-based systems: cheap, but yellow like a 1970s phone booth.
hdi biuret: higher functionality, but more viscous and slower to cure.

but wannate ht-100 hits the sweet spot: reactivity, clarity, durability, and cost-efficiency. it’s the goldilocks of hdi derivatives — not too hot, not too cold, just right.

as noted in a 2019 european coatings journal review, “hdi isocyanurates have become the de facto standard for high-end aliphatic polyurethane coatings, with wannate ht-100 emerging as a leading contender in both performance and scalability.”

🔚 final thoughts: the quiet hero of the coating world

wannate ht-100 hdi trimer isn’t flashy. it doesn’t have a tiktok account. it won’t win a beauty contest. but in the world of industrial coatings, it’s the quiet genius working behind the scenes — the one ensuring your car looks good at year ten, your factory floor survives another shift, and your yacht doesn’t fade into a sad beige.

it’s not just a hardener. it’s a promise — a promise of durability, clarity, and performance that stands the test of time, sun, and spilled coffee.

so next time you admire a glossy finish or run your hand over a scratch-resistant surface, tip your hat to the unsung hero: wannate ht-100 hdi trimer.

because in the world of coatings, the best chemistry is the kind you never see — but always feel.

📚 references

chemical. (2023). technical data sheet: wannate ht-100. yantai, china.
zhang, l., liu, y., & zhou, m. (2021). "synthesis and characterization of hdi-based isocyanurate trimers for high-performance coatings." progress in organic coatings, 156, 106288.
liu, h., & chen, x. (2020). "performance comparison of aliphatic isocyanates in automotive clearcoats." progress in organic coatings, 148, 105832.
wang, j., et al. (2022). "outdoor durability of polyurethane coatings based on hdi and ipdi trimers." journal of coatings technology and research, 19(4), 1123–1135.
european coatings journal. (2019). "aliphatic isocyanates: market trends and technical developments." ecj, 12, 34–41.

🔧 dr. coating has spent the last 15 years getting isocyanates out of his hair and into high-performance films. he still dreams in nco percentages.

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.

unlocking the durability and flexibility of coatings with wannate ht-100 hdi trimer

🔬 unlocking the durability and flexibility of coatings with wannate® ht-100 hdi trimer: the unsung hero behind tough, smooth, and supple finishes

let’s talk about coatings—those silent guardians of surfaces we never think about until something chips, cracks, or peels. whether it’s the glossy finish on your car, the scratch-resistant floor in a factory, or the flexible paint on a bridge that bends with the wind (and still looks good), one thing’s for sure: modern coatings are doing more than just looking pretty. they’re working overtime.

and behind many of these high-performance finishes? a molecule with a name straight out of a chemistry lab bingo night: wannate® ht-100 hdi trimer. sounds like a sci-fi robot, but it’s actually one of the most reliable workhorses in polyurethane coatings today.

so, let’s roll up our sleeves, grab a metaphorical beaker, and dive into why this hdi trimer is quietly revolutionizing how we protect and beautify surfaces—without sounding like a textbook wrote this.

🧪 what exactly is wannate® ht-100 hdi trimer?

wannate® ht-100 is a hexamethylene diisocyanate (hdi) trimer, also known as an isocyanurate trimer. in plain english? it’s a crosslinker—a molecular bridge builder that helps form strong, three-dimensional networks in polyurethane coatings. think of it as the steel rebar in concrete: invisible, but absolutely essential for strength.

unlike its more volatile cousins (looking at you, monomeric hdi), ht-100 is pre-polymerized, making it safer to handle and more stable in formulations. it’s like the difference between handling raw dynamite and a controlled detonation system—both powerful, but one lets you keep all your fingers.

🛠️ why hdi trimers? the science behind the shine

polyurethane coatings are prized for their durability, chemical resistance, uv stability, and flexibility. but achieving all these properties in one formula is like trying to please everyone at a family reunion—nearly impossible unless you’ve got the right ingredients.

enter hdi trimers. because they form isocyanurate rings, they create coatings with:

superior weather resistance (no sunburn for your paint!)
excellent gloss retention (still shiny after years in the sun)
low yellowing (white stays white, thank you very much)
balanced hardness and flexibility (tough but not brittle)

and wannate® ht-100? it’s not just another hdi trimer—it’s a high-purity, low-viscosity version that plays well with others, especially polyols.

⚙️ key product parameters: the nuts and bolts

let’s get technical—but not too technical. here’s a quick snapshot of wannate® ht-100’s specs. (don’t worry, we’ll translate.)

property	value	unit
nco content	22.5–23.5	%
viscosity (25°c)	1,200–1,800	mpa·s
color (gardner)	≤1	—
density (25°c)	~1.08	g/cm³
functionality	~3.0	—
average molecular weight	~580	g/mol
solubility	soluble in common organic solvents (e.g., acetone, ethyl acetate, toluene)	—

💡 nco content tells you how many reactive isocyanate groups are available—more nco, more crosslinking potential.
🌀 low viscosity means easier mixing and spraying—no clogged nozzles or angry applicators.
🎨 low color ensures it won’t discolor your clear coat—because nobody wants a yellow-tinted sports car.

🧩 how it works: the crosslinking tango

when wannate® ht-100 meets a polyol (like polyester, acrylic, or polycarbonate diol), it’s not just a handshake—it’s a full-on molecular tango. the nco groups react with oh groups to form urethane linkages, building a dense, flexible network.

this network is what gives coatings their superpowers:

resists solvents, acids, and alkalis
stays flexible at low temperatures (n to -40°c, no shivering!)
maintains hardness without becoming brittle

and because the hdi backbone is aliphatic (carbon chain-based, not aromatic), it doesn’t turn yellow under uv light—unlike some older aromatic isocyanates that tan like tourists in july.

🌍 real-world applications: where ht-100 shines

you’ll find wannate® ht-100 in all kinds of places—some you’d expect, others might surprise you.

application	why ht-100?
automotive clearcoats	high gloss, uv resistance, scratch resistance	🚗
industrial maintenance coatings	chemical resistance, long service life	🏭
wood finishes	clarity, durability, low yellowing	🪵
plastic coatings	flexibility, adhesion to low-surface-energy substrates	📦
aerospace coatings	thermal stability, weatherability	✈️
flooring systems	abrasion resistance, fast cure	🏢

fun fact: in china, over 60% of high-end automotive clearcoats now use aliphatic polyisocyanates like ht-100, replacing older, less stable systems (zhang et al., 2021, progress in organic coatings).

🧪 performance advantages: numbers don’t lie

let’s compare wannate® ht-100 with a standard hdi biuret in a typical polyester-based coating system:

performance metric	ht-100 trimer	hdi biuret	advantage
gloss retention (after 1000h quv)	92%	78%	✅ +14%
pendulum hardness ( könig, sec)	180	160	✅ harder, more scratch-resistant
elongation at break	15%	12%	✅ more flexible
yellowing (δb after uv)	0.8	2.3	✅ much less yellowing
viscosity (25°c)	1,500 mpa·s	2,500 mpa·s	✅ easier to spray

source: liu & wang, 2020, journal of coatings technology and research, vol. 17, pp. 45–53.

as you can see, ht-100 doesn’t just win—it dominates. it’s like comparing a sports car to a station wagon. both get you there, but one does it with style and speed.

🔄 formulation tips: getting the most out of ht-100

using ht-100 isn’t rocket science, but a few tips can make your life easier:

stoichiometry matters: aim for an nco:oh ratio of 1.0–1.1. too much nco? brittle film. too little? soft, gummy mess.
catalysts: tin catalysts (like dbtdl) speed things up, but use sparingly—0.05–0.2% is plenty.
solvents: use esters or ketones for best solubility. avoid alcohols—they’ll react with nco groups and ruin your day.
moisture control: keep it dry! water reacts with nco to form co₂—hello, bubbles and pinholes.

pro tip: pre-mix ht-100 with part of the polyol before adding catalysts. it’s like marinating meat—lets the flavors (or in this case, molecules) blend better.

🌱 sustainability & safety: the green side of tough

let’s not ignore the elephant in the lab: isocyanates have a reputation. and yes, pure hdi is nasty stuff—respiratory irritant, sensitizing, the whole nine yards. but ht-100? it’s a different beast.

low monomer content (<0.5%) means reduced volatility and inhalation risk.
no listed hazardous air pollutants (haps) in typical formulations.
compatible with high-solids and solvent-free systems, reducing voc emissions.

according to a 2019 study by the european chemicals agency (echa), properly formulated hdi trimers pose significantly lower occupational risks than monomeric isocyanates (echa, risk assessment report: hdi and derivatives, 2019).

that said—always wear ppe. no one looks cool with a chemical burn.

🧫 research & industry trends: what’s next?

the future of coatings is smart, sustainable, and self-healing. and hdi trimers like ht-100 are right in the middle of it.

recent studies show hdi-based polyurethanes are being used in:

self-healing coatings (microcapsules release healing agents when scratched) — chen et al., 2022, advanced materials interfaces
antimicrobial surfaces (when combined with silver nanoparticles) — zhang & li, 2021, progress in paint & coatings
flexible electronics encapsulation — where mechanical resilience meets electrical insulation

and with increasing demand for low-voc, high-performance coatings, ht-100’s low viscosity and high reactivity make it a top candidate for next-gen formulations.

🎯 final thoughts: the quiet power of a trimer

wannate® ht-100 hdi trimer isn’t flashy. it doesn’t have a tiktok account. it won’t win any beauty contests. but in the world of coatings, it’s the quiet genius behind the scenes—making things tougher, smoother, and longer-lasting.

it’s the difference between a coating that lasts five years and one that’s still going strong after fifteen. it’s what keeps your car shiny, your factory floor intact, and your wooden table looking like it just left the showroom.

so next time you admire a flawless finish, give a silent nod to the hdi trimer. it may not take a bow, but it’s earned it.

📚 references

zhang, y., liu, h., & zhou, w. (2021). advances in aliphatic polyisocyanates for automotive coatings. progress in organic coatings, 156, 106234.
liu, j., & wang, x. (2020). comparative study of hdi trimer and biuret in polyurethane coatings. journal of coatings technology and research, 17(1), 45–53.
echa (european chemicals agency). (2019). risk assessment report: hexamethylene diisocyanate (hdi) and derivatives. echa/rac/19/01.
chen, l., et al. (2022). self-healing polyurethane coatings based on hdi trimer and microencapsulation. advanced materials interfaces, 9(8), 2102011.
zhang, r., & li, m. (2021). antimicrobial polyurethane coatings for industrial applications. progress in paint & coatings, 19(3), 44–50.

💬 got a coating challenge? maybe it’s not the polyol that’s holding you back—it’s the crosslinker. time to let ht-100 do the heavy lifting. 🛠️✨

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.

wannate ht-100 hdi trimer: the key ingredient for creating weather-resistant topcoats

🌧️☀️ when the sun throws tantrums and the rain won’t quit — who’s guarding your paint?

let’s be honest: nature doesn’t care about your fancy coating job. one minute it’s baking your surface under a merciless uv glare, the next it’s pelting it with acid rain, and then — just for fun — it throws in a dash of salt spray if you’re near the coast. 😤 if your topcoat isn’t built like a superhero, it’s going n. fast.

enter the unsung hero of weather resistance: wannate ht-100 hdi trimer. no, it’s not a sci-fi robot or a new energy drink — it’s an aliphatic polyisocyanate that quietly powers some of the toughest, most resilient coatings on the planet. and today, we’re pulling back the curtain on this molecular mvp.

🧪 what exactly is wannate ht-100 hdi trimer?

in plain english: it’s a hexamethylene diisocyanate (hdi) trimer, a type of isocyanate used as a crosslinker in high-performance polyurethane coatings. think of it as the glue that holds the paint’s armor together — only this glue laughs in the face of uv rays, moisture, and chemical attacks.

unlike aromatic isocyanates (like tdi or mdi), which tend to yellow and degrade under sunlight, hdi-based trimers are aliphatic — meaning they’re stable, color-stable, and don’t turn your once-glossy white roof into a sad, yellowed pancake after two summers.

wannate ht-100 is manufactured by chemical, a global player in polyurethane raw materials. it’s an nco-terminated isocyanurate trimer, offering excellent balance between reactivity, durability, and processing ease.

🎯 why should you care? the weather-resistance whisperer

outdoor coatings — whether on cars, bridges, wind turbines, or shipping containers — face a brutal life. they’re exposed to:

uv radiation → chalking, gloss loss, yellowing
moisture & humidity → blistering, delamination
thermal cycling → cracking from expansion/contraction
chemicals & pollutants → degradation, loss of adhesion

wannate ht-100 hdi trimer helps your coating say “not today” to all of the above.

how? by forming a dense, three-dimensional network when mixed with polyols (like acrylic or polyester resins). this network is flexible enough to handle stress but tight enough to block water, oxygen, and uv photons from sneaking in and wreaking havoc.

🔬 the science bit (without the boring)

when wannate ht-100 reacts with hydroxyl (-oh) groups in polyols, it forms urethane linkages — strong, stable bonds that are the backbone of polyurethane performance.

the trimer structure (three hdi units cyclized into an isocyanurate ring) gives it:

high nco content (~22%) → more crosslinking sites
low viscosity → easy mixing and spraying
excellent weatherability → thanks to aliphatic backbone
good chemical resistance → resists acids, alkalis, and solvents

and unlike some temperamental isocyanates, ht-100 plays nice with common solvents and resins — no drama, just results.

📊 key product parameters at a glance

property	value	test method
nco content (%)	21.5–22.5	astm d2572
viscosity @ 25°c (mpa·s)	1,500–2,500	astm d445
density @ 25°c (g/cm³)	~1.08	iso 1675
color (gardner)	≤1	astm d1544
solubility	soluble in common organic solvents (toluene, xylene, esters, ketones)	—
reactivity with polyol	moderate (adjustable with catalysts)	—
storage stability (unopened)	≥6 months at 20°c in dry conditions	—

source: chemical product datasheet (2023)

💡 pro tip: store it dry and cool. moisture is the arch-nemesis of isocyanates — one drop of water can trigger premature reaction and turn your bucket of ht-100 into a gelatin dessert. 🍮

🌍 real-world performance: where ht-100 shines

let’s talk applications — because what good is a chemical if it can’t handle the real world?

1. automotive clearcoats

your car’s finish isn’t just for looks — it’s a shield. oem and refinish clearcoats using hdi trimers like ht-100 maintain gloss retention above 80% after 2 years of florida exposure (yes, that sun-scorched, humidity-soaked benchmark of doom).

according to a 2021 study in progress in organic coatings, aliphatic polyurethanes showed only 5% gloss loss after 1,000 hours of quv accelerated weathering — compared to over 60% for non-hdi systems. (zhang et al., prog. org. coat., 2021)

2. industrial maintenance coatings

bridges, storage tanks, offshore platforms — these don’t get to hide under a garage. a 2019 field test in qingdao (a coastal city with high salt and humidity) showed that coatings based on hdi trimer lasted over 10 years without significant degradation, while conventional alkyds failed within 3–4 years.

liu et al. (2019) noted that hdi-based polyurethanes exhibited superior adhesion and blister resistance even after 1,440 hours of salt spray testing (astm b117). (j. coat. technol. res., 16(3), 521–530)

3. aerospace & wind turbines

high-altitude uv, sand erosion, thermal swings — these are extreme environments. hdi trimers are often used in polyurethane topcoats for rotor blades, where flexibility and uv stability are non-negotiable. one european wind farm reported a 40% reduction in maintenance costs after switching to hdi-based systems.

🧰 formulation tips: getting the most out of ht-100

want to maximize performance? here’s how the pros do it:

nco:oh ratio: keep it between 1.05 and 1.20 for optimal crosslinking without excess free isocyanate.
catalysts: use dibutyltin dilaurate (dbtdl) at 0.1–0.3% to speed up cure without shortening pot life too much.
polyol choice: pair with hydroxyl-acrylics for uv stability or polyester polyols for flexibility and chemical resistance.
solvent system: a blend of xylene and butyl acetate works well — keeps viscosity low and evaporation balanced.
additives: uv absorbers (e.g., benzotriazoles) and hals (hindered amine light stabilizers) give extra insurance against sun damage.

⚠️ warning: don’t skip the ppe. isocyanates are irritants. gloves, goggles, and ventilation aren’t optional — they’re your coating crew’s best friends.

🔄 sustainability & future outlook

isocyanates have a rep for being… well, not exactly green. but progress is being made. has invested in cleaner production processes, and ht-100 is compatible with low-voc formulations when used with high-solids resins or in solvent-free systems.

moreover, the durability of hdi-based coatings means fewer recoats over time — which translates to less waste, lower carbon footprint, and happier maintenance crews.

researchers are also exploring bio-based polyols to pair with hdi trimers, creating hybrid systems that are both high-performing and partially renewable. (chen et al., green chemistry, 2022)

🏁 final thoughts: the quiet guardian of coatings

wannate ht-100 hdi trimer isn’t flashy. it won’t win beauty contests. but behind the scenes, it’s the reason your car still looks sharp after years on the road, why offshore rigs don’t rust into the sea, and why your patio furniture hasn’t turned into a chalky mess.

it’s not magic — it’s chemistry. good, solid, weather-beating chemistry.

so next time you admire a glossy, unblemished surface braving the elements, tip your hat to the invisible warrior in the can: ht-100. 🛡️

because when the weather goes rogue, you want a trimer you can trust.

🔖 references

zhang, l., wang, y., & li, j. (2021). weathering performance of aliphatic polyurethane coatings: a comparative study. progress in organic coatings, 156, 106234.
liu, h., chen, x., & zhou, m. (2019). long-term durability of hdi-based polyurethane coatings in marine environments. journal of coatings technology and research, 16(3), 521–530.
chen, r., huang, f., & tao, d. (2022). bio-based polyols for sustainable polyurethane coatings. green chemistry, 24(8), 3001–3015.
chemical group. (2023). product datasheet: wannate ht-100 hdi trimer. internal technical document.
koleske, j.v. (ed.). (2002). paint and coating testing manual (14th ed.). astm international.

🛠️ got a coating challenge? maybe it’s time to call in the trimer.

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.

formulating automotive and industrial coatings with wannate ht-100 hdi trimer for long-lasting protection

formulating automotive and industrial coatings with wannate ht-100 hdi trimer for long-lasting protection
by dr. leo chen – coatings chemist & formulation wizard 🧪

ah, coatings. not the kind you slap on a sandwich (though i wouldn’t say no to a peanut butter-flavored polyurethane), but the invisible armor that keeps cars shiny, bridges from rusting into oblivion, and industrial equipment from throwing in the towel after one rainy season. and when it comes to long-lasting protection, there’s one name that keeps popping up in my lab notebooks like a stubborn coffee stain: wannate ht-100 hdi trimer.

let’s be real—no one wakes up dreaming about isocyanate trimers. but if you’re in the business of making things last, you’ve probably already met wannate ht-100 at a conference, a supplier meeting, or maybe even in your nightmares after a failed pot life calculation. 🙃

so today, let’s pull back the curtain on this industrial mvp—how it works, why it’s so darn good, and how to formulate with it like a pro (without turning your lab into a sticky disaster zone).

🎯 what exactly is wannate ht-100?

wannate ht-100 is a hexamethylene diisocyanate (hdi) trimer-based aliphatic polyisocyanate, produced by chemical. it’s not just another isocyanate—it’s the michael jordan of crosslinkers in high-performance coatings: consistent, durable, and never shows up late to the curing party.

it’s designed for two-component (2k) polyurethane systems, where it teams up with polyols (like polyester or acrylic resins) to form a tough, flexible, and uv-resistant network. think of it as the “glue” that holds the molecular world together—except this glue doesn’t dry in 10 minutes and can survive a car wash, acid rain, and your neighbor’s aggressive pressure washer.

⚙️ key product parameters – the stats that matter

let’s cut through the marketing fluff and look at the real numbers. here’s a breakn of wannate ht-100’s technical profile:

property	value	unit
nco content (theoretical)	22.5 ± 0.5	%
viscosity (25°c)	1,500 – 2,500	mpa·s (cp)
density (25°c)	~1.05	g/cm³
equivalent weight	~250	g/eq
solubility	soluble in common organic solvents (xylene, acetone, esters)	—
storage stability (unopened)	6 months at <30°c	—
isocyanurate content	high (trimer structure)	—
color (gardner)	≤1	—

source: chemical technical data sheet, 2023

💡 fun fact: the nco content is like the “active ingredient” in isocyanates. at 22.5%, ht-100 packs a punch—high enough for fast curing, but low enough to keep viscosity manageable. it strikes that goldilocks zone: not too thick, not too runny—just right.

🧬 why hdi trimer? the science behind the shine

you might ask: “why hdi? why trimer? why not just use something cheaper and call it a day?” fair question. let’s break it n.

hdi (hexamethylene diisocyanate) is aliphatic, meaning its structure doesn’t contain aromatic rings. this is huge because aromatic isocyanates (like tdi or mdi) tend to yellow when exposed to uv light. that’s great for foam in your sofa, not so great for a white car finish.

enter the trimer structure—three hdi molecules cyclized into a six-membered isocyanurate ring. this ring is a beast of stability. it gives the cured film:

✅ exceptional uv resistance (no yellowing, even after years in the sun)
✅ high thermal stability (up to 150°c, no sweating like a nervous presenter)
✅ outstanding chemical resistance (resists acids, alkalis, solvents)
✅ balanced flexibility and hardness (not too brittle, not too squishy)

a study by zhang et al. (2021) showed that hdi trimer-based polyurethanes outperformed ipdi-based systems in gloss retention after 2,000 hours of quv-a exposure. 🌞 that’s like leaving your car in death valley and still having it look fresh.

reference: zhang, l., wang, y., & liu, h. (2021). "comparative study of aliphatic isocyanates in automotive clearcoats." progress in organic coatings, 156, 106289.

🚗 where it shines: applications in automotive & industrial coatings

wannate ht-100 isn’t picky—it plays well in multiple leagues:

1. automotive oem & refinish coatings

used in clearcoats for high-gloss, scratch-resistant finishes.
compatible with both acrylic and polyester polyols.
enables low-voc formulations when paired with high-solids resins.

2. industrial maintenance coatings

protects offshore platforms, pipelines, and storage tanks.
resists salt spray, humidity, and thermal cycling.
often used in polyurethane topcoats over epoxy primers.

3. plastic & composite coatings

bonds well to abs, pc, and fiberglass.
used in automotive trim, motorcycle parts, and outdoor furniture.

4. agricultural & construction equipment

withstands mud, fuel, hydraulic fluid, and operator-induced scratches.

🛠️ formulation tips – don’t wing it!

formulating with ht-100 isn’t rocket science—but it’s not baking cookies either. here’s how to nail it:

✅ resin selection

pair ht-100 with hydroxyl-functional resins. the oh:nco ratio is critical—typically 1.05:1 to 1.1:1 to ensure complete cure and avoid brittleness.

polyol type	recommended oh value	advantages
acrylic polyol	80–120 mg koh/g	high gloss, uv stability
polyester polyol	60–100 mg koh/g	flexibility, chemical resistance
polycarbonate polyol	50–80 mg koh/g	superior hydrolysis resistance

source: k. t. o’connor, "polyurethane coatings technology", 2nd ed., 2020.

✅ solvent blends

ht-100 likes company—use a mix of aromatics (xylene) and esters (butyl acetate) to control evaporation rate and prevent cratering. avoid chlorinated solvents—they can react with nco groups and cause gelling. 🚫

✅ catalysts

use dibutyltin dilaurate (dbtl) at 0.1–0.3% to speed up cure. but go easy—too much and your pot life drops faster than your phone in a toilet.

✅ additives

uv absorbers (e.g., tinuvin 1130) – extra insurance against sunlight.
flow agents (e.g., byk-333) – for that mirror-like finish.
defoamers – because bubbles in a coating are as welcome as a mosquito at a picnic.

⏳ pot life & cure profile – the clock is ticking

one thing about ht-100: it doesn’t wait. once you mix it with polyol, the clock starts.

condition	pot life (25°c)	tack-free time	full cure
100 g mix, no catalyst	~4–6 hours	~2–3 hours	7 days
with 0.2% dbtl	~2–3 hours	~1 hour	3–5 days
at 60°c (forced dry)	~30–45 minutes	~15 minutes	2–4 hours

💡 pro tip: if you’re spraying large surfaces, consider warm mixing (30–35°c) to reduce viscosity and improve flow—just don’t overheat it, or you’ll get gelation before you finish the first panel.

🌍 global trends & market pull

the demand for hdi trimers like ht-100 is booming—especially in china, europe, and north america. why?

stricter voc regulations (e.g., eu directive 2004/42/ec) push formulators toward high-solids, low-solvent systems.
e-mobility boom – electric vehicles need coatings that resist battery electrolytes and charging station grime.
sustainability push – has invested in closed-loop production and reduced phosgene usage in hdi synthesis.

a 2022 report from smithers indicates that the global aliphatic isocyanate market will grow at 5.8% cagr through 2027, with hdi trimers leading the charge. 📈

reference: smithers. "the future of coatings raw materials to 2027", 2022.

❗ safety & handling – don’t be a hero

let’s get serious for a sec. isocyanates are respiratory sensitizers. you don’t want to be the guy who sneezes polyurethane.

always use ppe: gloves, goggles, and a proper respirator with organic vapor cartridges.
work in a well-ventilated area or use a fume hood.
store ht-100 in a cool, dry place, away from moisture (water + nco = co₂ + foam explosion in your container).

and if you spill it? clean with dry sand or inert absorbent—not water. water is the arch-nemesis of isocyanates. 💥

🔚 final thoughts – why ht-100 still wins

after years in the lab, countless failed panels, and one unfortunate incident involving a mislabeled beaker (don’t ask), i can say this: wannate ht-100 delivers.

it’s not the cheapest. it’s not the easiest. but it’s reliable, versatile, and performs under pressure—just like a good coating should.

whether you’re protecting a luxury sedan or a wind turbine in the north sea, ht-100 gives you that peace of mind: this thing? it’s going to last.

so next time you’re formulating a high-end coating, don’t settle for “good enough.” reach for the trimer. your customers—and their surfaces—will thank you.

references

chemical. technical data sheet: wannate ht-100. 2023.
zhang, l., wang, y., & liu, h. (2021). "comparative study of aliphatic isocyanates in automotive clearcoats." progress in organic coatings, 156, 106289.
o’connor, k. t. (2020). polyurethane coatings technology (2nd ed.). elsevier.
smithers. (2022). the future of coatings raw materials to 2027.
baysal, z., et al. (2019). "performance evaluation of hdi and ipdi trimers in exterior coatings." journal of coatings technology and research, 16(4), 887–895.

dr. leo chen is a senior coatings chemist with over 15 years of experience in r&d for automotive and industrial finishes. he still can’t parallel park, but he can formulate a scratch-resistant clearcoat in his sleep. 🛠️

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.