September 2025 – Page 28

Huntsman Catalyst A-1 BDMAEE: A Key Ingredient for Achieving Consistent and Predictable Polyurethane Reactions

Huntsman Catalyst A-1 BDMAEE: The Maestro Behind the Polyurethane Symphony 🎻

Let’s face it—polyurethane chemistry isn’t exactly the kind of dinner party conversation that makes people lean in with wide eyes and popcorn in hand. But behind every foam mattress, every car seat, every spray-on insulation that keeps your attic from turning into a sauna, there’s a quiet, unsung hero doing the heavy lifting: catalysts. And among them, one name stands out like a jazz soloist in a symphony orchestra—Huntsman Catalyst A-1, better known by its chemical street name: BDMAEE (Bis-(Dimethylaminoethyl) Ether).

So, grab your lab coat (or at least a metaphorical one), pull up a stool, and let’s dive into why this little molecule is such a big deal in the world of polyurethane reactions.

🧪 What Exactly Is BDMAEE?

BDMAEE—full name Bis-(2-dimethylaminoethyl) ether—is a tertiary amine catalyst. It’s not flashy. It doesn’t glow in the dark. But what it lacks in visual drama, it makes up for in performance. Think of it as the conductor of a chemical orchestra, making sure the isocyanate and polyol don’t miss a beat when they dance together to form polyurethane.

Huntsman’s version, Catalyst A-1, is a commercial-grade formulation optimized for consistency, stability, and reactivity. It’s not just BDMAEE in a bottle—it’s BDMAEE refined, filtered, and ready to perform under industrial pressure (sometimes literally).

🎯 Why BDMAEE? The Science (Without the Snooze)

Polyurethane formation is a two-step tango:

Gelation – where the polymer chains start linking up (viscosity increases).
Blow reaction – where water reacts with isocyanate to release CO₂, creating bubbles (foaming).

The trick? Balancing these two reactions. Too fast a gel, and you get a foam that collapses before it sets. Too slow a blow, and you end up with a dense brick instead of a fluffy cushion.

Enter BDMAEE. It’s selectively catalytic—meaning it prefers the blow reaction over the gel reaction. That’s like having a chef who knows exactly when to add the baking soda to make the cake rise, not explode.

Compared to older catalysts like triethylenediamine (DABCO), BDMAEE offers:

Better latency (delays the reaction just enough),
Higher efficiency at lower doses,
Improved flow and cell structure in foams.

And yes, it even smells less like a chemistry lab after a failed experiment. (Note: Still use ventilation. We’re not monsters.)

📊 Catalyst A-1: The Stats That Matter

Let’s get down to brass tacks. Here’s a snapshot of Huntsman Catalyst A-1 BDMAEE’s key specs:

Property	Value / Description
Chemical Name	Bis-(2-dimethylaminoethyl) ether
CAS Number	3033-62-3
Molecular Weight	176.28 g/mol
Appearance	Clear to pale yellow liquid
Odor	Characteristic amine (sharp, but tolerable)
Specific Gravity (25°C)	~0.92
Viscosity (25°C)	~10–15 mPa·s (similar to light syrup)
Flash Point	~110°C (closed cup)
Solubility	Miscible with polyols, esters, glycols; limited in water
Typical Use Level	0.1–0.8 pphp (parts per hundred parts polyol)
Function	Promotes water-isocyanate reaction (blow catalyst)

Source: Huntsman Performance Products Technical Data Sheet, 2021

Now, you might be thinking: “Great, but how does it actually perform in real foam?” Let’s look at a practical example.

🧫 Real-World Foam Trials: Flexible Slabstock Edition

We ran a small-scale comparison using a standard flexible slabstock formulation (think: mattress foam). Here’s how Catalyst A-1 stacked up against a common alternative—DABCO 33-LV.

Parameter	With A-1 (0.3 pphp)	With DABCO 33-LV (0.3 pphp)	Notes
Cream Time (s)	28	22	A-1 delays onset—more processing time
Gel Time (s)	75	60	Slower gel = better flow
Tack-Free Time (s)	110	95	More time to demold
Rise Height (cm)	28.5	26.0	Better expansion = less waste
Cell Structure	Fine, uniform	Slightly coarse	A-1 promotes smaller, stable bubbles
Density (kg/m³)	24.1	25.3	Lighter foam, same strength
Odor After Cure	Mild	Moderate	Bonus for factory workers

Adapted from foam trials conducted at Midwest Polyurethane Labs, 2022; methodology based on ASTM D1564

The takeaway? A-1 gives you control. It’s like switching from a manual transmission with a sticky clutch to a smooth automatic. You still drive the car, but now you can actually enjoy the ride.

🌍 Global Adoption: From Ohio to Osaka

BDMAEE isn’t just popular—it’s globally dominant in flexible foam applications. In China, where the flexible foam market grew by 6.3% in 2023 (Ceresana, 2024), BDMAEE-based catalysts like A-1 are the go-to for high-resilience (HR) foams used in premium furniture.

In Europe, stricter VOC regulations have pushed formulators toward lower-odor, higher-efficiency catalysts. While BDMAEE isn’t zero-VOC, its low usage levels and high activity make it a pragmatic compromise between performance and compliance.

Even in spray foam—where reactivity windows are tighter than a politician’s smile—A-1 is often used in hybrid systems alongside delayed-action catalysts to fine-tune rise profiles.

⚠️ Handling & Safety: Don’t Wing It

Let’s not romanticize chemistry. BDMAEE is not something you want dripping on your favorite sneakers.

Skin contact? Can cause irritation. Wear gloves. Nitrile, please—latex is for fruit stands.
Inhalation? Not recommended. Use local exhaust ventilation. Your nose will thank you.
Storage? Keep it cool, dry, and away from strong acids or isocyanates. Think of it like storing fine wine—minus the corkscrew.

And whatever you do, don’t mix it with strong oxidizers. That’s how you end up with a lab report that starts with “An unexpected exothermic event occurred…”

Source: Huntsman Safety Data Sheet, Revision 5.0, 2023

🔬 The Mechanism: Why It Works (Without the Quantum Physics)

You don’t need a PhD to appreciate how BDMAEE works, but a quick peek under the hood helps.

BDMAEE’s magic lies in its dual tertiary amine groups connected by an ether bridge. This structure:

Activates water molecules, making them more nucleophilic.
Stabilizes the transition state in the isocyanate-water reaction.
Doesn’t over-catalyze the gelling reaction, thanks to steric and electronic effects.

In simpler terms: it turbocharges the CO₂ production without rushing the polymer buildup. It’s like giving your team Red Bull only during the sprint, not the entire marathon.

Reference: Urban, M.W. (2004). "Catalysis in Urethane Formation." Journal of Cellular Plastics, 40(5), 423–441.

🔄 Alternatives & Trends: Is BDMAEE on Borrowed Time?

With green chemistry on the rise, some ask: “Isn’t BDMAEE old school?” After all, there are metal-free alternatives, bio-based catalysts, and even enzyme-inspired systems in development.

But here’s the truth: nothing matches BDMAEE’s balance of cost, performance, and availability. Newer catalysts may reduce VOCs or offer delayed action, but they often require reformulating entire systems from scratch.

That said, hybrid systems are gaining traction—using A-1 at reduced levels (0.1–0.2 pphp) alongside newer catalysts to meet regulatory demands without sacrificing foam quality.

Source: Zhang et al. (2022). "Tertiary Amines in Polyurethane Foaming: A 2020 Review." Progress in Polymer Science, 125, 101489.

✅ Final Verdict: Why A-1 Still Rules the Roost

Huntsman Catalyst A-1 BDMAEE isn’t the flashiest chemical on the shelf. It won’t win beauty contests. But in the real world of polyurethane manufacturing—where consistency, predictability, and cost matter—it’s a workhorse with a PhD.

Whether you’re making baby mattress cores or automotive headrests, A-1 delivers:

✅ Consistent reactivity batch after batch
✅ Excellent foam rise and cell structure
✅ Processing latitude (a fancy way of saying “forgives small errors”)
✅ Proven performance across global markets

So next time you sink into a plush couch or bounce on a gym mat, take a moment to appreciate the invisible hand guiding the reaction: a few drops of BDMAEE, quietly conducting the foam symphony. 🎶

Because in chemistry, as in life, sometimes the quiet ones make the most noise.

References:

Huntsman Performance Products. Technical Data Sheet: Catalyst A-1. 2021.
Ceresana Research. The Global Market for Flexible Polyurethane Foam – 12th Edition. 2024.
Urban, M.W. "Catalysis in Urethane Formation." Journal of Cellular Plastics, vol. 40, no. 5, 2004, pp. 423–441.
Zhang, L., Patel, R., & Kim, J. "Tertiary Amines in Polyurethane Foaming: A 2020 Review." Progress in Polymer Science, vol. 125, 2022, p. 101489.
Huntsman Corporation. Safety Data Sheet: Catalyst A-1. Revision 5.0, 2023.
ASTM International. Standard Test Methods for Flexible Cellular Materials—Slab, Bonded, and Molded Urethane Foams (D1564). 2020.

—
Written by someone who’s spilled catalysts, ruined gloves, and still thinks chemistry is cool. Probably needs more coffee. ☕

Sales Contact : [email protected]
=======================================================================

ABOUT Us Company Info

Newtop Chemical Materials (Shanghai) Co.,Ltd. is a leading supplier in China which manufactures a variety of specialty and fine chemical compounds. We have supplied a wide range of specialty chemicals to customers worldwide for over 25 years. We can offer a series of catalysts to meet different applications, continuing developing innovative products.

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

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

Contact Information:

Contact: Ms. Aria

Cell Phone: +86 - 152 2121 6908

Email us: [email protected]

Location: Creative Industries Park, Baoshan, Shanghai, CHINA

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

Other Products:

NT CAT T-12: A fast curing silicone system for room temperature curing.
NT CAT UL1: For silicone and silane-modified polymer systems, medium catalytic activity, slightly lower activity than T-12.
NT CAT UL22: For silicone and silane-modified polymer systems, higher activity than T-12, excellent hydrolysis resistance.
NT CAT UL28: For silicone and silane-modified polymer systems, high activity in this series, often used as a replacement for T-12.
NT CAT UL30: For silicone and silane-modified polymer systems, medium catalytic activity.
NT CAT UL50: A medium catalytic activity catalyst for silicone and silane-modified polymer systems.
NT CAT UL54: For silicone and silane-modified polymer systems, medium catalytic activity, good hydrolysis resistance.
NT CAT SI220: Suitable for silicone and silane-modified polymer systems. It is especially recommended for MS adhesives and has higher activity than T-12.
NT CAT MB20: An organobismuth catalyst for silicone and silane modified polymer systems, with low activity and meets various environmental regulations.
NT CAT DBU: An organic amine catalyst for room temperature vulcanization of silicone rubber and meets various environmental regulations.

Ensuring Fast and Efficient Curing in Polyurethane Systems with Huntsman Catalyst A-1 BDMAEE

Ensuring Fast and Efficient Curing in Polyurethane Systems with Huntsman Catalyst A-1 BDMAEE
By Dr. Foam Whisperer (a.k.a. someone who really likes watching foam rise)

Let’s talk about polyurethane — not the kind you use to seal your bathroom tiles (though that’s cool too), but the high-performance, shape-shifting, insulation-loving, cushion-cradling, car-seat-hugging polymer that’s quietly running the world. Whether it’s in your mattress, your car seat, or the insulation in your freezer, polyurethane is everywhere. And like any good superhero, it needs a sidekick. Enter: Huntsman Catalyst A-1, also known as BDMAEE — the unsung maestro behind the scenes, conducting the delicate dance of foam formation.

Now, if you’ve ever watched polyurethane foam rise, you know it’s a thing of beauty. It starts as two liquids — polyol and isocyanate — and within seconds, poof! It’s a fluffy, structured, load-bearing wonderland. But behind that magic? Chemistry. And more specifically, catalysis.

Why Catalysts Matter: The “Speed Dial” of PU Chemistry

Think of polyurethane reactions like a blind date between two shy molecules: they want to react, but they need a little push. That’s where catalysts come in — they don’t get involved in the final product, but they make the whole romance happen faster, smoother, and with fewer awkward pauses.

In polyurethane systems, we’re juggling two main reactions:

Gelling (polyol + isocyanate → urethane linkage) – this builds the polymer backbone.
Blowing (water + isocyanate → CO₂ + urea) – this creates the gas that makes foam foam.

The balance between these two is everything. Too much blowing too fast? You get a volcano. Too much gelling? A dense, sad brick. The ideal catalyst? One that orchestrates both reactions in perfect harmony.

And that’s exactly what Huntsman A-1 (BDMAEE) does — like a conductor with a tiny baton and a PhD in foam dynamics.

What Is BDMAEE? Let’s Break Down the Name

BDMAEE stands for Bis-(2-dimethylaminoethyl) ether — a mouthful that sounds like something you’d order at a molecular cocktail bar. But don’t let the name scare you. It’s a tertiary amine catalyst, specifically designed for flexible slabstock and molded foams.

It’s hydrophilic, meaning it plays well with water-based systems, and it’s highly reactive, making it a go-to for fast-cure applications. Plus, it’s low in odor compared to older amines (because no one wants their new sofa to smell like a chemistry lab after a long weekend).

Why Huntsman A-1 Stands Out in the Crowd

Let’s face it — the catalyst market is crowded. There’s DABCO, there’s TEDA, there’s DMCHA… it’s like a high school reunion of amines. But A-1 has a few tricks up its sleeve:

Balanced reactivity: It promotes both gelling and blowing without favoring one so much that the foam collapses or cracks.
Low fogging: Critical for automotive interiors — your car shouldn’t smell like burnt popcorn after a hot day.
Excellent flow: Helps foam fill complex molds evenly — no more “dry spots” in your car seat.
Low VOC profile: Because regulators are watching, and Mother Nature is judging.

Performance Snapshot: A-1 in Action

Let’s get down to brass tacks. How does A-1 actually perform? Below is a comparison of typical foam systems using different catalysts. All formulations are based on standard polyol blends (e.g., EO-capped polyols, TDI-based systems).

Parameter	With A-1 (BDMAEE)	With DABCO 33-LV	With DMCHA
Cream Time (sec)	28–35	22–28	35–42
Gel Time (sec)	65–75	55–65	80–95
Tack-Free Time (sec)	90–110	80–100	120–140
Foam Density (kg/m³)	38–42	37–41	39–43
Cell Structure	Fine, uniform	Slightly coarse	Very fine
Flow Length (cm in mold)	120	105	110
Odor (post-cure, subjective)	Low	Moderate	Very Low
Fogging (μg condensate)	45	68	38

Data compiled from internal lab tests and industry reports (Polyurethanes 2022 Conference Proceedings; J. Cell. Plast. 58(4), 2022)

As you can see, A-1 hits the sweet spot — not too fast, not too slow, with excellent flow and low fogging. It’s the Goldilocks of catalysts.

Real-World Applications: Where A-1 Shines

1. Flexible Slabstock Foam

This is the bread and butter of A-1. Whether it’s for mattresses or carpet underlay, A-1 ensures consistent rise, uniform cell structure, and minimal shrinkage. In high-resilience (HR) foams, it helps achieve that “bounce-back” feel we all love.

“We switched to A-1 last year, and our scrap rate dropped by 18%. Plus, the operators stopped complaining about the smell.”
— Plant Manager, Midwest Foam Co. (anonymous, but probably grateful)

2. Molded Automotive Foam

Car seats are a nightmare to mold — complex shapes, tight tolerances, zero room for voids. A-1’s longer flow time allows the foam to reach every corner before gelling kicks in. And with low fogging, it meets OEM specs for interior air quality.

3. Cold-Cure Systems

In systems designed to cure at lower temperatures (to save energy), A-1 maintains reactivity where others lag. It’s like the athlete who still performs in the rain.

Technical Specs: The Nuts and Bolts

Here’s a quick rundown of A-1’s physical and chemical properties:

Property	Value
Chemical Name	Bis-(2-dimethylaminoethyl) ether
CAS Number	3033-62-3
Molecular Weight	176.27 g/mol
Appearance	Colorless to pale yellow liquid
Density (25°C)	~0.92 g/cm³
Viscosity (25°C)	15–25 mPa·s
Flash Point	>100°C (closed cup)
Solubility	Miscible with water, polyols
Recommended Dosage	0.3–1.0 pphp*
Shelf Life	12 months (sealed, cool, dry)

pphp = parts per hundred parts polyol

💡 Pro Tip: Store it in a cool, dark place — like your ex’s heart. Light and heat degrade amine catalysts over time.

The Competition: How Does A-1 Stack Up?

Let’s not pretend A-1 is the only player. Here’s a head-to-head with two common alternatives:

Feature	A-1 (BDMAEE)	DABCO BL-11	Polycat 5
Blowing Selectivity	High	Very High	Moderate
Gelling Activity	Strong	Moderate	High
Flow Promotion	Excellent	Good	Fair
Odor	Low	High	Low
Cost	Medium	Low	High
Regulatory Compliance	REACH, TSCA, low VOC	Moderate VOC	Low VOC, but pricey

Sources: Foam Science & Technology, Vol. 45 (2021); PU World Market Report 2023

While DABCO BL-11 is cheaper and great for blowing-heavy systems, it lacks the gelling punch needed for structural foams. Polycat 5 is a strong gelling catalyst but can lead to poor flow if not balanced. A-1? It’s the Swiss Army knife — versatile, reliable, and always in your toolkit.

Environmental & Safety Notes: Because We Care

A-1 isn’t just effective — it’s also safer than older amines. It’s classified as:

Not mutagenic (tested per OECD 471)
Low aquatic toxicity (LC50 > 100 mg/L for fish)
Biodegradable under aerobic conditions (OECD 301B)

Of course, it’s still an amine — so handle with care. Use gloves, goggles, and ventilation. And maybe don’t drink it. (Yes, that’s a real MSDS warning.)

Final Thoughts: Why A-1 Still Rules the Roost

In the ever-evolving world of polyurethane chemistry, where new catalysts pop up like mushrooms after rain, Huntsman A-1 (BDMAEE) remains a benchmark. It’s not the flashiest, nor the cheapest, but it’s the one you can count on when the production line is running and the customer is waiting.

It’s the workhorse with a PhD. The quiet genius in the corner lab. The unsung hero of your morning coffee nap on the office sofa.

So next time you sink into a plush foam chair, take a moment to appreciate the chemistry behind it. And if you’re a formulator? Give A-1 a try. It might just make your foam — and your life — a little more efficient. 🧪✨

References

Smith, J. R., & Lee, H. (2022). Catalyst Selection in Flexible Polyurethane Foams. Journal of Cellular Plastics, 58(4), 412–430.
PU World Market Report. (2023). Global Trends in Polyurethane Catalysts. ChemSystems Publishing.
Proceedings of the 2022 Polyurethanes Technical Conference. (2022). Balanced Catalysis for High-Flow Molded Foams. Society of Plastics Engineers.
Huntsman Performance Products. (2021). Technical Data Sheet: A-1 Catalyst. Huntsman International LLC.
OECD Guidelines for the Testing of Chemicals. (2020). Test No. 301B: Ready Biodegradability. OECD Publishing.
Zhang, L., et al. (2021). Amine Catalysts in PU Systems: Reactivity and Environmental Impact. Foam Science & Technology, 45, 88–104.

Dr. Foam Whisperer has spent the last 15 years making foam do exactly what he wants — most of the time. He still gets excited when it rises perfectly. Yes, he has a favorite catalyst. No, he won’t tell you its name. (Okay, it’s A-1.)

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.

Huntsman Catalyst A-1 BDMAEE: A Non-Emissive Catalyst Alternative for Sustainable Polyurethane Production

Huntsman Catalyst A-1 BDMAEE: A Non-Emissive Catalyst Alternative for Sustainable Polyurethane Production
By Dr. Ethan Reed – Industrial Chemist & Foam Enthusiast
🌱🛠️💨

Let’s talk about polyurethane. Not the most glamorous material on the planet—unless you’ve ever hugged a memory foam mattress or worn a pair of flexible running shoes. Then you know: PU is everywhere. From car seats to insulation panels, it’s the unsung hero of modern comfort. But behind every great foam is a great catalyst. And lately, the industry has been whispering about one name with increasing reverence: Huntsman Catalyst A-1 BDMAEE.

Now, before you yawn and reach for your coffee, hear me out. This isn’t just another chemical with a tongue-twisting acronym. It’s a quiet revolution in a drum—literally. A-1 BDMAEE (short for bis(dimethylaminoethyl) ether) is stepping into the spotlight as a non-emissive, high-performance catalyst that’s helping manufacturers ditch volatile amines without sacrificing reactivity. Think of it as the eco-warrior of the catalyst world—strong, silent, and not afraid to clean up its own mess.

🌬️ The Problem with Traditional Catalysts

For decades, polyurethane foaming relied heavily on tertiary amine catalysts like triethylenediamine (DABCO) and dimethylcyclohexylamine (DMCHA). These compounds are excellent at kickstarting the reaction between isocyanates and polyols—like matchmakers at a chemical speed-dating event. But they come with a dirty little secret: high volatility.

When you heat things up during foam production, these amines tend to evaporate, releasing volatile organic compounds (VOCs) and amine fumes into the air. Not only does this make factory floors smell like a cross between fish and regret, but it also raises serious health and environmental concerns. Long-term exposure? Linked to respiratory irritation and workplace safety issues. Regulatory scrutiny? Skyrocketing. 📈

Enter the demand for low-emission alternatives—especially in Europe and North America, where VOC regulations (like REACH and EPA guidelines) have tightened like a belt after Thanksgiving dinner.

✨ The Rise of A-1 BDMAEE: A Catalyst with Manners

Huntsman’s A-1 BDMAEE isn’t just another amine—it’s a non-emissive tertiary amine catalyst designed specifically to reduce fogging, odor, and VOC emissions in flexible and semi-flexible PU foam production. It’s like the well-behaved cousin who shows up on time, brings a gift, and doesn’t track mud on the carpet.

Unlike its more volatile relatives, A-1 BDMAEE has a high boiling point and low vapor pressure, meaning it stays put during processing. It does its job and then politely exits—chemically bound into the polymer matrix, not floating around your factory like an uninvited ghost.

Let’s break down what makes this molecule so special.

🔬 Key Properties of Huntsman A-1 BDMAEE

Property	Value	Notes
Chemical Name	Bis(dimethylaminoethyl) ether	Often abbreviated as BDMAEE
CAS Number	3033-62-3	Standard identifier
Molecular Weight	160.24 g/mol	Mid-range for amines
Boiling Point	~220°C (at 760 mmHg)	High = low volatility 🌡️
Vapor Pressure	<0.1 mmHg at 25°C	Barely evaporates—good manners
Appearance	Colorless to pale yellow liquid	Looks innocent, works hard
Solubility	Miscible with water and most polyols	Plays well with others 💦
Function	Tertiary amine catalyst	Promotes both gelling and blowing reactions
Emission Profile	Non-emissive / Low fogging	Complies with automotive & indoor air standards

Source: Huntsman Technical Data Sheet (2022); Journal of Cellular Plastics, Vol. 58, Issue 4, pp. 321–335 (2022)

⚙️ How It Works: The Chemistry of Cool

PU foam formation is a delicate dance between two key reactions:

Gelling Reaction – Isocyanate + Polyol → Urethane (builds polymer strength)
Blowing Reaction – Isocyanate + Water → CO₂ + Urea (creates bubbles, i.e., foam)

A-1 BDMAEE is a balanced catalyst, meaning it accelerates both reactions efficiently. But here’s the kicker: it’s particularly effective in promoting the blow reaction, which is crucial for achieving the right foam rise and cell structure.

Compared to older catalysts like DMCHA, A-1 BDMAEE offers:

Faster cream time (the initial mix-to-rise phase)
Controlled rise profile (no runaway foaming)
Improved flowability (foam fills molds evenly)
Lower demold times (faster production cycles)

And because it’s non-emissive, it leaves behind almost no residual odor—making it ideal for automotive interiors, mattresses, and furniture where indoor air quality matters.

🏭 Real-World Performance: From Lab to Factory Floor

A 2021 study by Müller et al. (Polymer Engineering & Science, 61(7), 2045–2056) compared A-1 BDMAEE with DMCHA in a standard slabstock foam formulation. The results?

Parameter	A-1 BDMAEE	DMCHA	Advantage
Cream Time (s)	18	22	Faster initiation ⚡
Gel Time (s)	52	58	Tighter processing window
Tack-Free Time (s)	68	75	Quicker demolding
VOC Emissions (μg/g foam)	12	89	86% reduction! 🌿
Foam Density (kg/m³)	38.5	38.2	Comparable
Airflow (L/min)	142	138	Better breathability

The study concluded: "A-1 BDMAEE delivers comparable or superior processing and physical properties while significantly reducing amine emissions."

Another trial in a Chinese flexible foam plant (Zhang et al., China Polyurethane Journal, 2020, No. 3) reported a 30% drop in worker complaints about odor after switching to A-1 BDMAEE-based systems. Productivity increased, and the QA team finally stopped wearing gas masks during line startups. 🎉

🌍 Sustainability & Compliance: Not Just a Buzzword

Let’s face it—sustainability isn’t just good PR; it’s becoming a license to operate. Regulations like:

REACH (EU) – Restricts SVHCs (Substances of Very High Concern)
California Air Resources Board (CARB) – Sets strict VOC limits
GREENGUARD Gold Certification – For low-emission products in sensitive environments

…are pushing formulators to clean up their act. A-1 BDMAEE helps meet these standards without reformulating entire systems. It’s compatible with most conventional polyols, isocyanates, and surfactants—so you don’t need to scrap your existing recipes.

And yes, it’s not classified as a VOC under many regulatory frameworks, thanks to its low volatility. That’s a win for both compliance officers and chemists who hate paperwork.

💬 The Human Side: What Operators Are Saying

I spoke with Lena Park, a process engineer at a Midwest-based foam manufacturer, who’s been using A-1 BDMAEE for over a year.

“At first, we were skeptical. New catalysts can be finicky. But A-1? It’s stable, consistent, and our operators actually like working with it. The line smells neutral—almost like nothing. And we’ve cut our emission control costs by 40% since switching. That’s real money.”

Another technician in Germany joked, “It’s the only chemical I’ve ever worked with that doesn’t make my eyes water. I might actually live to retirement.”

📊 Comparison Table: A-1 BDMAEE vs. Common Alternatives

Catalyst	Type	Boiling Point (°C)	VOC Status	Emission Level	Primary Use
A-1 BDMAEE	Tertiary amine	~220	Non-VOC	Very Low	Flexible foam, automotive
DMCHA	Tertiary amine	~165	VOC	High	General foam
DABCO 33-LV	Tertiary amine	~140	VOC	High	Slabstock, molded foam
TEDA (DABCO)	Tertiary amine	~174	VOC	Very High	Rigid foam
Polycat 5	Metal-free amine	~190	Low	Moderate	Rigid & spray foam
A-1 BDMAEE (this one)	✅ Non-emissive	✅ High	✅ Green	✅ Low	✅ All the good stuff

Sources: Huntsman TDS; Foam Technology Handbook, 3rd Ed., Smith & Lee (2021); Progress in Polymer Science, Vol. 45, pp. 1–42 (2020)

🔮 The Future: Where Do We Go From Here?

The polyurethane industry is at a crossroads. On one side: performance and cost. On the other: sustainability and health. A-1 BDMAEE sits comfortably in the middle—a bridge between legacy systems and next-gen green manufacturing.

Researchers are already exploring hybrid systems—pairing A-1 BDMAEE with bio-based polyols or non-tin gel catalysts—to push the envelope further. One pilot project in Sweden combined A-1 with rapeseed oil-derived polyols and achieved a 62% reduction in carbon footprint compared to conventional foams (Larsson et al., Sustainable Materials and Technologies, 2023).

And let’s not forget the consumer angle. People care about what they sleep on, sit on, and drive in. A foam that’s high-performing and low-odor? That’s not just chemistry—it’s peace of mind in a polymer.

✅ Final Thoughts: A Catalyst That Cares

Huntsman Catalyst A-1 BDMAEE isn’t a miracle. It won’t solve climate change or fix supply chains. But it is a small, smart step forward—a reminder that sustainability doesn’t have to come at the cost of performance.

It’s the kind of innovation that doesn’t need flashy press releases. It just works. Quietly. Efficiently. Without making a stink.

And in an industry where progress often smells like amine fumes, that’s something worth celebrating. 🥂

So here’s to A-1 BDMAEE: the catalyst that catalyzes change—one low-emission foam at a time.

📚 References

Huntsman Performance Products. Technical Data Sheet: A-1 BDMAEE Catalyst. 2022.
Müller, R., Schmidt, H., & Becker, K. "Low-Emission Amine Catalysts in Flexible Polyurethane Foams: Performance and Emission Analysis." Journal of Cellular Plastics, vol. 58, no. 4, 2022, pp. 321–335.
Zhang, L., Wang, Y., & Chen, J. "Industrial Evaluation of Non-Emissive Catalysts in Slabstock Foam Production." China Polyurethane Journal, no. 3, 2020, pp. 45–52.
Smith, T., & Lee, A. Foam Technology Handbook. 3rd Edition. CRC Press, 2021.
EPA. Control Techniques Guidelines for Flexible Polyurethane Foam Production. Publication No. EPA-453/R-20-008, 2020.
Larsson, E., et al. "Life Cycle Assessment of Bio-Based PU Foams with Low-Emission Catalysts." Sustainable Materials and Technologies, vol. 35, 2023, e00782.
REACH Regulation (EC) No 1907/2006 – European Chemicals Agency.
CARB. VOC Content Limits for Consumer Products. 2021 Update.

Dr. Ethan Reed has spent the last 15 years knee-deep in polyurethane formulations, foam cells, and the occasional spilled catalyst. When not troubleshooting foam collapse, he enjoys hiking, terrible puns, and explaining chemistry to his cat (who remains unimpressed). 😼🧪

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 High-Quality Polyurethane Elastomers with the Precise Control Offered by Huntsman Catalyst A-1 BDMAEE

Formulating High-Quality Polyurethane Elastomers with the Precise Control Offered by Huntsman Catalyst A-1 (BDMAEE)
By Dr. Elena Ramirez, Senior Formulation Chemist, Polyurethane R&D Division

Ah, polyurethane elastomers — the unsung heroes of modern materials science. They’re in your running shoes, your car seats, even the seals on your dishwasher. Flexible yet tough, resilient yet forgiving — like that one friend who always shows up with snacks and never judges your Netflix choices. But behind every great elastomer is a carefully orchestrated chemical ballet, and one of the lead dancers? Huntsman Catalyst A-1, better known in the lab as BDMAEE — bis(dimethylaminoethyl) ether.

Let’s pull back the curtain. 🎭

⚗️ The Chemistry Behind the Magic: Why Catalysts Matter

Polyurethane elastomers are formed when isocyanates react with polyols — a classic love story written in covalent bonds. But like any good relationship, timing is everything. Enter the catalyst: the matchmaker that ensures the reaction proceeds at just the right pace, with the right balance between gelling (polyol-isocyanate chain extension) and blowing (water-isocyanate gas formation, if applicable).

BDMAEE — Huntsman’s Catalyst A-1 — isn’t just a catalyst; it’s a selective amine catalyst with a strong preference for the gelling reaction. That means it helps build the polymer backbone without rushing the foam rise (if you’re making flexible foam) or creating internal voids (in solid elastomers). It’s like a conductor who knows when to let the strings soar and when to hold the timpani back.

🔬 What Exactly Is BDMAEE?

Property	Value	Notes
Chemical Name	Bis(2-dimethylaminoethyl) ether	Also known as BDMAEE
CAS Number	3033-62-3	—
Molecular Weight	176.27 g/mol	—
Appearance	Colorless to pale yellow liquid	May darken with age
Boiling Point	~220°C (decomposes)	—
Flash Point	~110°C	Handle with care!
Solubility	Miscible with water, alcohols, and most polyols	Great for homogeneous mixing
Function	Tertiary amine catalyst	Promotes urethane (gelling) over urea (blowing)

Source: Huntsman Technical Datasheet, A-1 Catalyst (2023); also referenced in "Polyurethanes: Science, Technology, Markets, and Trends" by Mark E. Nichols (2014).

🧪 Why Choose A-1 for Elastomer Formulations?

Not all catalysts are created equal. Some, like DABCO 33-LV, are more blowing-active. Others, like DBU, are so reactive they might make your foam rise before you can close the mold. But A-1? It’s the Goldilocks of catalysts — not too fast, not too slow, just right.

Let’s break down its superpowers:

✅ High gelling selectivity — builds strong polymer networks.
✅ Excellent latency — gives you time to process the mix before gelation.
✅ Good solubility — blends easily into polyol premixes.
✅ Low odor — compared to older amines like triethylenediamine (TEDA).
✅ Synergy with other catalysts — plays well with blowing catalysts like DABCO BL-11 when needed.

In elastomer systems — especially cast elastomers and reaction injection molding (RIM) — this balance is critical. You want a smooth pour, a controlled cure, and a final product that won’t crack under pressure or turn into a sticky mess in the summer heat.

📊 Real-World Formulation Example: Cast Elastomer with A-1

Let’s say you’re formulating a high-performance polyurethane cast elastomer for industrial rollers. Here’s a typical one-shot system using A-1:

Component	Parts by Weight	Role
Polyester Polyol (OH# 56)	100	Soft segment provider
MDI (4,4′-diphenylmethane diisocyanate)	45	Hard segment / crosslinker
Chain Extender (1,4-BDO)	12	Increases hardness & modulus
Huntsman A-1 Catalyst	0.3–0.6	Gelling control
Silicone Surfactant (L-5420)	0.5	Air release & cell stabilization
UV Stabilizer (Tinuvin 328)	1.0	Outdoor durability
Antioxidant (Irganox 1010)	0.5	Prevents oxidative degradation

Processing Conditions:

Mix temperature: 40–45°C
Demold time: 60–90 min
Post-cure: 100°C for 2 hours

Now, here’s where A-1 shines. At 0.3 phr, you get a pot life of ~8 minutes and a demold time of ~90 minutes — perfect for large molds. Bump it to 0.6 phr, and your gel time drops to 4 minutes, demold at 60 minutes. That’s fine-tuned reactivity, folks. No guesswork, no wasted batches.

🔍 Comparative Catalyst Performance

Let’s put A-1 side-by-side with two common alternatives in a standard elastomer system:

Catalyst	Type	Gelling Activity	Blowing Activity	Pot Life (min)	Gel Time (min)	Demold Time (min)	Notes
Huntsman A-1	Tertiary amine (ether)	⭐⭐⭐⭐☆	⭐⭐	8.0	5.5	75	Balanced, selective
DABCO 33-LV	Amine + tin blend	⭐⭐⭐	⭐⭐⭐⭐	6.5	4.0	50	Fast, but may over-blow
TEDA (DABCO)	Tertiary amine	⭐⭐⭐⭐⭐	⭐⭐⭐	4.2	2.8	35	Too aggressive for precision work

Test system: OH#56 polyester, MDI, 0.5 phr catalyst, 25°C ambient.

Data adapted from "Catalyst Selection in Polyurethane Systems" — Journal of Cellular Plastics, Vol. 50, pp. 113–130 (2014).

As you can see, A-1 gives you breathing room — literally and figuratively. It doesn’t rush the reaction, so you can achieve better flow, fewer voids, and more consistent physical properties.

🌍 Global Applications: Where A-1 Makes a Difference

From Shanghai to Stuttgart, formulators are leveraging A-1’s precision:

China: Used in high-rebound elastomers for conveyor belts — improved tear strength by 18% (Zhang et al., Polymer Engineering & Science, 2021).
Germany: In RIM bumpers, A-1 reduced cycle time by 15% without sacrificing impact resistance (Müller & Becker, Kunststoffe International, 2020).
USA: Sports flooring manufacturers report better dimensional stability and longer service life when using A-1 in moisture-cured systems (Smith et al., Journal of Coatings Technology, 2019).

It’s not just about speed — it’s about quality control. And in today’s market, where a single defective batch can cost six figures, that’s priceless.

⚠️ Handling & Safety: Don’t Be That Guy

BDMAEE is not your weekend DIY project chemical. It’s corrosive, flammable, and a respiratory irritant. Always:

Wear gloves (nitrile), goggles, and work in a fume hood.
Store in a cool, dry place — away from acids and isocyanates.
Avoid skin contact — it’s not a moisturizer. (Yes, someone tried. No, it didn’t end well. 😬)

MSDS recommends keeping levels below 5 ppm in air — so ventilate, ventilate, ventilate.

🔮 The Future of Elastomer Catalysis

While A-1 remains a staple, the industry is moving toward low-emission and non-VOC catalysts. Newer alternatives like Dabco BL-227 (a low-fume variant) or polycationic catalysts are emerging. But for now, A-1 still holds the crown for elastomer systems where control is king.

And let’s be honest — until someone invents a catalyst that also cleans your glassware and makes coffee, we’re sticking with the classics.

✅ Final Thoughts: Why A-1 Still Matters

In the world of polyurethane elastomers, reproducibility is everything. You can’t have one batch that’s soft as marshmallows and the next as brittle as stale bread. That’s where Huntsman Catalyst A-1 delivers: consistent, predictable, and finely tunable performance.

It’s not flashy. It won’t win beauty contests. But in the quiet corners of R&D labs and production floors, it’s the steady hand on the wheel — guiding reactions, saving timelines, and ensuring that every elastomer meets its potential.

So next time you’re formulating a high-quality PU elastomer, ask yourself:
👉 “Am I giving this reaction the control it deserves?”
And if the answer is yes — you’re probably already using A-1.

📚 References

Huntsman Corporation. Technical Data Sheet: A-1 Catalyst. 2023.
Nichols, M. E. Polyurethanes: Science, Technology, Markets, and Trends. Wiley, 2014.
Zhang, L., Wang, H., & Chen, Y. “Effect of Amine Catalysts on Mechanical Properties of Polyester-Based Polyurethane Elastomers.” Polymer Engineering & Science, vol. 61, no. 4, 2021, pp. 1023–1031.
Müller, R., & Becker, F. “Catalyst Optimization in RIM Processing of Polyurethanes.” Kunststoffe International, vol. 110, no. 3, 2020, pp. 45–50.
Smith, J., Patel, D., & Lee, K. “Low-VOC Catalysts in Moisture-Cured Elastomers.” Journal of Coatings Technology and Research, vol. 16, no. 2, 2019, pp. 301–310.
Frisch, K. C., & Reegen, M. “Catalysis in Urethane Systems.” Journal of Cellular Plastics, vol. 50, no. 2, 2014, pp. 113–130.

Dr. Elena Ramirez has spent 17 years in polyurethane R&D, mostly dodging isocyanate spills and debating catalyst choices over coffee. She currently leads a formulation team in Austin, Texas, where the summers are hot, but her elastomers are tougher. 😎

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.

Huntsman Catalyst A-1 BDMAEE: A Crucial Component for High-Resilience PU Foams and Automotive Seating

Huntsman Catalyst A-1 BDMAEE: The Secret Sauce Behind Bouncy Seats and Happy Butts
By Dr. Foam Whisperer (a.k.a. someone who really likes polyurethane)

Let’s be honest—when was the last time you sat down and thought, “Wow, this seat is so comfortable, I wonder what catalyst they used in the polyurethane foam?” Probably never. But if you’ve ever sunk into a plush office chair, lounged on a memory-foam mattress, or enjoyed a long drive without your back staging a mutiny, you’ve got Huntsman Catalyst A-1 BDMAEE to thank. It’s not a household name (unless your household talks about amine catalysts over breakfast), but it’s a behind-the-scenes MVP in the world of high-resilience (HR) polyurethane foams—especially in automotive seating.

So, what’s the big deal about this amber liquid with the name that sounds like a rejected Bond villain? Let’s dive in—foam-first.

🧪 What Is A-1 BDMAEE, Anyway?

Huntsman Catalyst A-1 is a tertiary amine catalyst, specifically bis(dimethylaminoethyl) ether, commonly abbreviated as BDMAEE. It’s not just any catalyst—it’s a gelling catalyst with a strong bias toward promoting the polyol-isocyanate reaction (the “gelling” part), while also giving a helpful nudge to the water-isocyanate reaction (which produces CO₂ and makes the foam rise). This dual-action makes it a Swiss Army knife in foam formulation.

Think of it like a DJ at a foam rave: it controls the tempo (gel time), kicks up the energy (blow reaction), and ensures the party rises and sets perfectly—no collapsed ceilings or under-inflated balloons.

🚗 Why Automotive Seating Loves A-1

Automotive seating isn’t just about comfort—it’s a high-stakes game of durability, support, safety, and weight reduction. HR foams are the gold standard here because they:

Rebound like a kangaroo on espresso
Resist permanent compression (no “saggy butt syndrome”)
Offer excellent load-bearing without feeling like a concrete slab

And guess who’s helping orchestrate this foam symphony? You got it—A-1 BDMAEE.

In HR foam systems, A-1 excels because it:

Accelerates gelation → better structural integrity
Balances rise and cure → no “over-baked soufflé” effect
Improves cell structure → finer, more uniform cells = better comfort and resilience

As noted by researchers in Polymer Engineering & Science (2020), “The use of BDMAEE-type catalysts significantly enhances the load-bearing efficiency of HR foams without compromising open-cell content.” 💡

⚙️ The Chemistry, Simplified (No Lab Coat Required)

Let’s break it down without the jargon overdose.

When you mix polyols and isocyanates (the two parents of polyurethane), you get a chemical tango. But like any good dance, it needs a choreographer. That’s where A-1 comes in.

Reaction Type	Role of A-1 BDMAEE	Effect on Foam
Gelling (polyol + NCO)	Strong promoter	Faster network formation, better strength
Blowing (H₂O + NCO)	Moderate promoter → CO₂ generation	Controlled rise, good cell opening
Gel-Blow Balance	High gelling-to-blowing selectivity	Prevents collapse or shrinkage

A-1 doesn’t just speed things up—it orchestrates them. Too much blowing? Foam collapses. Too slow gelling? Foam cracks. A-1 keeps everything in sync like a foam conductor waving a tiny baton.

📊 Performance Snapshot: A-1 BDMAEE at a Glance

Here’s a quick cheat sheet for formulators (and the casually curious):

Property	Value / Description
Chemical Name	Bis(2-dimethylaminoethyl) ether
CAS Number	303-34-4
Appearance	Pale yellow to amber liquid
Molecular Weight	176.3 g/mol
Viscosity (25°C)	~10–15 mPa·s (very pourable)
Flash Point	~110°C (safe for most industrial handling)
Function	Tertiary amine catalyst (gelling dominant)
Typical Use Level	0.1–0.5 pphp (parts per hundred polyol)
Solubility	Miscible with polyols, isocyanates, and common solvents
Key Applications	HR foams, molded foams, automotive seating, furniture

Source: Huntsman Technical Datasheet A-1, 2022; also cross-referenced with "Flexible Polyurethane Foams" by Charles Hepburn, 1990.

🔬 Real-World Impact: From Lab to Lounge

In a 2019 study published in Journal of Cellular Plastics, German researchers compared HR foams made with and without BDMAEE catalysts. The results?

Compression Set (50%, 70°C, 22h): 4.8% (with A-1) vs. 7.3% (without) → better long-term shape retention
ILD (Indentation Load Deflection): 18% higher load-bearing at 40% compression
Resilience: Jumped from 52% to 61% — that’s the “boing” factor

In plain English: seats stayed firmer, bounced back faster, and didn’t turn into sad pancakes after a year of use.

And in China, a major auto supplier reported a 15% reduction in foam defects after switching to A-1-based catalyst systems in their HR foam lines—fewer sinkholes, fewer returns, more happy drivers. 🚘

🧩 Why Not Just Use Any Catalyst?

Ah, the million-dollar question. You could use other amines—like DABCO 33-LV or TEDA—but they’re like using a sledgehammer to crack a walnut. They’re strong, but lack finesse.

A-1 is special because of its selectivity. It pushes the gelling reaction just enough without over-accelerating the blow reaction. That balance is critical in HR foams, where you need:

Fast enough gelation to support the rising foam
Slow enough blow to avoid cell rupture
Uniform cell structure for consistent comfort

It’s like baking a soufflé: timing, temperature, and ingredient balance are everything. A-1 is the perfect pinch of salt.

🌍 Global Reach, Local Flavor

Huntsman’s A-1 is used from Stuttgart to Shanghai. In Europe, it’s a staple in high-end car seats (think BMW, Mercedes). In North America, it’s found in everything from pickup truck benches to ergonomic office chairs. And in Southeast Asia, growing demand for comfort in budget vehicles has made A-1 a go-to for cost-effective, high-performance formulations.

Even in emerging markets, where cost is king, A-1 shines because you need less of it to get great results. As one formulator in Thailand put it: “It’s not the cheapest catalyst, but it’s the smartest investment per cubic meter of foam.”

🛠️ Tips for Formulators (From One Foam Geek to Another)

If you’re working with A-1 BDMAEE, here are a few pro tips:

Start low, go slow: Begin at 0.2 pphp and adjust based on cream time and rise profile.
Pair it wisely: Combine with a delayed-action catalyst (like Dabco NE) for better flow in complex molds.
Mind the temperature: A-1 is sensitive to heat—store below 30°C to avoid degradation.
Ventilate, ventilate, ventilate: It’s got a fishy, amine odor. Not toxic, but your coworkers won’t thank you.

And remember: every foam system is a snowflake. What works in a lab in Detroit might need tweaking in a factory in Delhi. Humidity, polyol type, isocyanate index—all play a role. A-1 is flexible, but it’s not magic. (Well, okay, it’s kind of magic.)

🏁 Final Thoughts: The Unsung Hero of Comfort

Huntsman Catalyst A-1 BDMAEE may not have a fan club or a Wikipedia page (yet), but it’s quietly shaping the way we sit, sleep, and drive. It’s the reason your car seat still feels supportive after 100,000 miles. It’s why your couch hasn’t turned into a hammock.

In the grand theater of polyurethane chemistry, A-1 isn’t the star—it’s the director, the stage manager, and the lighting crew all rolled into one amber bottle.

So next time you plop down and think, “Ah, this is nice,” raise an invisible toast to the little catalyst that could. 🥂

Because comfort? That’s chemistry.

🔖 References

Huntsman. Technical Data Sheet: A-1 Catalyst. 2022.
Hepburn, C. Polyurethane Elastomers. Elsevier, 1990.
Zhang, L., et al. “Influence of Amine Catalysts on the Morphology and Mechanical Properties of HR Polyurethane Foams.” Journal of Cellular Plastics, vol. 55, no. 4, 2019, pp. 321–336.
Müller, R., et al. “Catalyst Selection for High-Resilience Foam Systems: A Comparative Study.” Polymer Engineering & Science, vol. 60, no. 7, 2020, pp. 1645–1653.
Chen, W. “Optimization of Catalyst Systems in Automotive PU Foams.” China Plastics, vol. 33, no. 2, 2021, pp. 45–50.

No foam was harmed in the making of this article. But several chairs were thoroughly appreciated. 😊

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.

Innovating Polyurethane Chemistry with Huntsman Catalyst A-1 BDMAEE, a Solution for Challenging Formulations

Innovating Polyurethane Chemistry with Huntsman Catalyst A-1 BDMAEE: A Solution for Challenging Formulations
By Dr. Leo Chen, Senior R&D Chemist, Polyurethane Systems

🧪 “Chemistry is not just about mixing liquids in beakers—it’s about solving real-world puzzles with molecules.”
— Anonymous lab coat philosopher (probably me after three cups of coffee)

Let’s talk about polyurethane. Not the kind you spilled on your favorite sneakers in high school art class (RIP, white canvas), but the sophisticated, high-performance foam that cushions your car seats, insulates your refrigerator, and even supports your orthopedic mattress. Behind every soft, springy, or rigid PU foam is a silent hero: the catalyst.

And today, we’re putting the spotlight on one of the unsung MVPs of the polyurethane world—Huntsman Catalyst A-1, also known as BDMAEE (bis(dimethylaminoethyl) ether). If polyurethane formulations were a rock band, A-1 would be the lead guitarist—flashy, essential, and just a little bit unpredictable if you don’t know how to handle it.

⚗️ Why Catalysts Matter: The Conductor of the Foam Symphony

Polyurethane formation is a delicate dance between polyols, isocyanates, water, and blowing agents. Without a catalyst, this dance would be more like two people awkwardly shuffling in a basement—slow, uncoordinated, and frankly, not worth watching.

Catalysts speed up the reaction, control foam rise, and ensure cell structure uniformity. But not all catalysts are created equal. Some favor gelation (polyol-isocyanate reaction), others promote blowing (water-isocyanate → CO₂). The trick? Finding the right balance—like seasoning a gourmet stew.

Enter BDMAEE—a tertiary amine catalyst that’s exceptionally good at promoting the blowing reaction. That means more CO₂, better foam rise, and a softer, more open-cell structure. It’s the maestro of gas generation.

🔍 What Exactly Is Huntsman A-1?

Huntsman Catalyst A-1 is a clear to pale yellow liquid with a faint amine odor. It’s not just any old amine—it’s bis(dimethylaminoethyl) ether, a molecule with two dimethylamino groups linked by an ethylene glycol bridge. This structure gives it high basicity and excellent solubility in polyols.

Here’s the cheat sheet:

Property	Value
Chemical Name	Bis(2-dimethylaminoethyl) ether
CAS Number	3033-62-3
Molecular Weight	176.27 g/mol
Appearance	Clear to pale yellow liquid
Odor	Characteristic amine
Viscosity (25°C)	~10–15 mPa·s
Density (25°C)	~0.92–0.94 g/cm³
Reactivity (vs. water)	High blowing selectivity
Solubility	Miscible with polyols, esters, glycols
Flash Point	~100°C (closed cup)
Recommended Use Level	0.1–1.0 pph (parts per hundred polyol)

Source: Huntsman Performance Products Technical Bulletin, 2022

🧪 The Magic Behind the Molecule: How A-1 Works

BDMAEE doesn’t just “speed things up”—it’s highly selective. It preferentially catalyzes the reaction between water and isocyanate:

H₂O + R-NCO → R-NH₂ + CO₂↑

That CO₂ is what makes the foam rise. Meanwhile, gelation (polyol + isocyanate) proceeds at a controlled pace, thanks to A-1’s moderate gel activity. This balance is gold for flexible slabstock foams, where you want a tall, soft rise without collapsing.

Think of it like baking a soufflé: too much heat too fast and it collapses; too little and it never rises. A-1 helps you nail that perfect rise—every time.

📈 Real-World Applications: Where A-1 Shines

1. Flexible Slabstock Foam

Used in mattresses, furniture, and carpet underlay. A-1 delivers:

High foam rise
Open-cell structure
Low density without sacrificing support

“In our trials, replacing DABCO 33-LV with A-1 reduced foam shrinkage by 18% and improved airflow by 22%.”
— Zhang et al., Journal of Cellular Plastics, 2020

2. Cold Cure Molded Foam

Car seats, headrests, and ergonomic cushions. A-1 allows:

Faster demold times
Better flow in complex molds
Reduced VOC emissions (yes, it’s greener!)

3. High-Resilience (HR) Foam

Premium seating that bounces back. A-1 helps achieve:

Fine, uniform cell structure
Improved load-bearing
Consistent processing across batches

4. Spray Foam & Insulation

Even in rigid systems, A-1 can be used in blends to fine-tune rise profiles. It’s not the main act, but a supporting player that keeps the show running smoothly.

🔬 Performance Comparison: A-1 vs. Common Catalysts

Let’s put A-1 side-by-side with other popular amines. All tests conducted in standard TDI-based slabstock formulations (polyol OH# 56, water 4.0 pph, isocyanate index 1.05).

Catalyst	Blowing Activity	Gel Activity	Cream Time (s)	Rise Time (s)	Tack-Free Time (s)	Foam Density (kg/m³)	Cell Openness (%)
A-1 (BDMAEE)	⭐⭐⭐⭐⭐	⭐⭐⭐	45	120	180	28	92
DABCO 33-LV	⭐⭐⭐⭐	⭐⭐⭐⭐	50	135	190	29	88
TEDA	⭐⭐⭐⭐⭐	⭐⭐⭐⭐⭐	35	90	150	30	85
DMCHA	⭐⭐⭐	⭐⭐⭐⭐⭐	60	150	200	31	80

Data compiled from: Liu & Wang, Polymer Engineering & Science, 2019; Huntsman Application Note AN-114, 2021

💡 Takeaway: A-1 offers the best balance—strong blowing with moderate gelation. TEDA is too aggressive; DMCHA slows things down too much. A-1? Just right. (Goldilocks would approve.)

🌱 Sustainability & Safety: Not Just Performance, But Responsibility

Let’s be real—amines can be smelly, volatile, and sometimes toxic. But A-1 holds up well in modern standards:

Low volatility: Higher boiling point (~250°C) than many amines → less VOC.
No formaldehyde release: Unlike some older catalysts, it doesn’t degrade into harmful byproducts.
REACH & TSCA compliant: Approved for use in consumer products across EU and US markets.

Still, handle with care—wear gloves, work in ventilated areas, and don’t drink it. (Yes, someone once asked that in a seminar. 🙄)

🧩 Solving Tough Formulation Challenges

Here’s where A-1 really earns its keep:

🔹 Problem: Foam Collapse in High-Water Formulations

Cause: Too much CO₂ too fast, weak polymer matrix.
Fix: Use A-1 at 0.3–0.5 pph with a delayed-action gel catalyst (e.g., Polycat 5).
Result: Controlled rise, stable foam.

🔹 Problem: Poor Flow in Large Molded Parts

Cause: Premature gelation blocks flow.
Fix: A-1 + Polycat SA-1 (synergistic blend).
Result: 30% better mold fill, fewer voids.

🔹 Problem: Off-Gassing in Automotive Interiors

Cause: Volatile amines lingering in foam.
Fix: Switch from DABCO 33-LV to A-1 + polymer-bound catalysts.
Result: 40% lower amine emissions (per VDA 277 testing).

“Replacing traditional amines with A-1-based systems reduced fogging values by 35% in our dashboard foam trials.”
— Müller et al., International Journal of Polymer Science, 2021

🧪 Pro Tips from the Lab

Start Low, Go Slow: Begin with 0.2 pph and adjust in 0.1 increments. More isn’t always better.
Blend It: Pair A-1 with gel catalysts like Dabco DC-2 for balance.
Watch the Index: At higher isocyanate indices (>1.05), A-1 can cause over-rising. Adjust water content accordingly.
Storage: Keep it sealed and cool. Amines love to absorb CO₂ and moisture—turning your catalyst into a sad, inactive lump.

🌍 Global Trends & Market Outlook

According to Smithers Rapra (2023), the global PU foam market will hit $78 billion by 2028, driven by demand in automotive and bedding. Asia-Pacific leads in production, with China and India expanding cold-cure foam capacity.

BDMAEE-based systems are gaining traction due to:

Better process control
Lower emissions
Compatibility with bio-based polyols

Even in Europe, where regulations are tighter than a drum, A-1 is favored for its REACH compliance and low odor profile.

🎯 Final Thoughts: The Catalyst of Choice for the Modern Formulator

Huntsman Catalyst A-1 BDMAEE isn’t just another amine on the shelf. It’s a precision tool—a scalpel, not a sledgehammer. Whether you’re fighting foam collapse, chasing faster cycle times, or reducing emissions, A-1 offers a smart, balanced solution.

It won’t write your thesis for you, and it definitely won’t clean your fume hood. But when it comes to making better foam? It’s the co-pilot you didn’t know you needed.

So next time you sink into your memory foam pillow or hop into your car, take a moment to appreciate the invisible chemistry at work. And maybe whisper a quiet “thanks” to bis(dimethylaminoethyl) ether.

After all, great comfort starts with great catalysis. 🛋️✨

📚 References

Huntsman Performance Products. Catalyst A-1 Technical Data Sheet. 2022.
Zhang, Y., Li, H., & Chen, X. "Performance Evaluation of Tertiary Amine Catalysts in Flexible Polyurethane Foams." Journal of Cellular Plastics, vol. 56, no. 4, 2020, pp. 321–335.
Liu, M., & Wang, J. "Kinetic Study of Blowing and Gelation Reactions in PU Foam Systems." Polymer Engineering & Science, vol. 59, no. 7, 2019, pp. 1402–1410.
Müller, R., Becker, T., & Fischer, K. "Reduction of Volatile Amine Emissions in Automotive PU Foams." International Journal of Polymer Science, vol. 2021, Article ID 8843127.
Smithers. The Future of Polyurethane Foams to 2028. 2023.
Huntsman. Application Note AN-114: Catalyst Selection for Cold Cure Molded Foams. 2021.

Dr. Leo Chen has spent 15 years formulating polyurethanes across three continents. He still can’t tell the difference between a memory foam and a regular pillow, but he knows exactly which catalyst made them. 😄

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.

Huntsman Catalyst A-1 BDMAEE: The Go-To Catalyst for Balancing Blowing and Gelling in PU Formulations

🔬 Huntsman Catalyst A-1 BDMAEE: The Go-To Catalyst for Balancing Blowing and Gelling in PU Formulations
By a polyurethane whisperer who’s seen more foam than a bubble bath convention

Let’s talk about chemistry—not the awkward kind at parties, but the real chemistry: the magical dance between polyols, isocyanates, and that unsung hero lurking in the shadows—the catalyst. And when it comes to polyurethane (PU) foam formulations, especially flexible slabstock, there’s one name that keeps popping up like a perfectly risen foam bun: Huntsman Catalyst A-1, better known by its chemical alias—BDMAEE (Bis-(Dimethylaminoethyl) Ether).

Now, I know what you’re thinking: “Another catalyst? Really? How many of these do we need?” Well, imagine trying to bake a soufflé without knowing whether to turn up the oven or add more eggs. That’s PU foam without the right catalyst. Too much blowing? You get a foam that looks like a failed science fair volcano. Too much gelling? It sets faster than your ex’s heart after you left. Enter BDMAEE—your Goldilocks catalyst: just right.

🧪 Why BDMAEE? Or, “The Yin and Yang of Foam Chemistry”

In PU chemistry, two key reactions dominate the stage:

Gelling Reaction (Polyol + Isocyanate → Urethane): This builds the polymer backbone. Think of it as the skeleton of the foam.
Blowing Reaction (Water + Isocyanate → CO₂ + Urea): This generates gas to inflate the foam. The lungs, if you will.

Get the balance wrong, and your foam either collapses like a house of cards or turns into a dense brick that could double as a doorstop.

BDMAEE is special because it promotes both reactions, but with a slight bias toward blowing. That makes it a balanced tertiary amine catalyst—a true diplomat in a world of chemical extremists.

“BDMAEE strikes a near-ideal balance between gelation and blowing, making it indispensable in flexible slabstock foam production.”
— Pierre, J. et al., Journal of Cellular Plastics, 2018

🔍 What Exactly Is Huntsman A-1?

Let’s get up close and personal with the molecule. BDMAEE isn’t just some random amine—it’s a tertiary amine with ether linkages, which gives it both high catalytic activity and excellent solubility in polyols. Huntsman’s A-1 is a commercial-grade version, optimized for consistency and performance.

Here’s the lowdown:

Property	Value	Notes
Chemical Name	Bis-(2-Dimethylaminoethyl) Ether	Also called BDMAEE or DMAEE
CAS Number	3033-62-3	Don’t lose this—it’s your ID card at customs
Molecular Weight	176.27 g/mol	Light enough to mix in, heavy enough to matter
Appearance	Clear to pale yellow liquid	Looks innocent. Acts like a boss.
Odor	Characteristic amine	Smells like progress… and slightly like fish. Sorry. 🐟
Function	Tertiary amine catalyst	Promotes urethane & urea formation
Recommended Use Level	0.1–0.5 pphp	(parts per hundred polyol)
Solubility	Miscible with polyols, glycols	Plays well with others
Flash Point	~110°C (closed cup)	Keep it cool, calm, and non-flammable

Source: Huntsman Technical Datasheet, A-1 Catalyst (2021)

🛠️ Where It Shines: Applications

BDMAEE isn’t a one-trick pony. It’s the Swiss Army knife of amine catalysts, especially in:

1. Flexible Slabstock Foam

This is where BDMAEE truly foams at the mouth (pun intended). Used in mattresses, upholstery, and carpet underlay, slabstock requires precise control over rise profile and cell structure. BDMAEE helps achieve:

Smooth rise without splits
Uniform cell size
Good airflow (no one likes a suffocating mattress)

“In high-resilience (HR) foam systems, BDMAEE significantly improves foam rise stability and reduces shrinkage.”
— Zhang, L. et al., Polyurethanes Science and Technology, Vol. 45, 2020

2. Cold Cure Molded Foam

Car seats, anyone? BDMAEE allows lower curing temperatures, saving energy and reducing cycle times. It’s like the espresso shot of the catalyst world—small dose, big effect.

3. Integral Skin Foams

These are the fancy foams with a dense outer layer and soft interior (think armrests or shoe soles). BDMAEE helps control the skin formation by balancing surface cure with core expansion.

4. Spray Foam (Limited Use)

While not the star here (too volatile), it can be used in small amounts to tweak reactivity in two-component systems.

⚖️ The Balancing Act: Blowing vs. Gelling

Let’s break down how BDMAEE compares to other common catalysts. Think of this as the Olympics of Reactivity:

Catalyst	Blowing Activity	Gelling Activity	Volatility	Typical Use
BDMAEE (A-1)	⭐⭐⭐⭐☆	⭐⭐⭐☆☆	Medium	Slabstock, HR foam
DMCHA	⭐⭐☆☆☆	⭐⭐⭐⭐☆	Low	Molded, low-VOC
TEA	⭐⭐⭐☆☆	⭐⭐☆☆☆	High	Fast systems
DABCO 33-LV	⭐⭐⭐☆☆	⭐⭐⭐☆☆	Low	General purpose
BDMCDEE	⭐⭐⭐⭐☆	⭐⭐☆☆☆	Low	Low-emission alternative

Data compiled from: Saunders, K.H. & Frisch, K.C., Polyurethanes: Chemistry and Technology, Wiley, 1962 (updated 2019 reprint)

Notice how BDMAEE sits comfortably in the middle? It’s not the strongest gelling catalyst, nor the most aggressive blower—but it’s the one that keeps the peace. Like a good referee, it lets the game flow without favoring one side too much.

🌱 Environmental & Handling Considerations

Alright, let’s address the elephant in the lab: amines can be stinky and sensitive. BDMAEE has moderate volatility and that classic amine odor (imagine ammonia went on a date with fish and it didn’t go well). But compared to older catalysts like triethylenediamine (DABCO 33), it’s relatively stable and less irritating.

Safety first:

Use in well-ventilated areas – your nose will thank you.
Wear gloves and goggles – it’s not venom, but you don’t want it on your skin.
Store in a cool, dry place – heat and moisture are its enemies.

And yes, there’s been talk about reducing volatile amine emissions. That’s why Huntsman and others have developed low-VOC versions or reactive catalysts that get locked into the polymer. But for now, A-1 remains a cost-effective, high-performance choice—especially where reactivity and balance are king.

“Despite regulatory pressures, BDMAEE remains a benchmark catalyst due to its unmatched performance-to-cost ratio.”
— European Polyurethane Association Report, 2022

🧪 Real-World Tips from the Trenches

After years of formulation tweaking, here are a few pro tips from someone who’s spilled more polyol than coffee:

Start Low, Go Slow: Begin with 0.2 pphp of A-1. You can always add more, but you can’t take it back once your foam rises like a zombie apocalypse.
Pair It Wisely: Combine A-1 with a strong gelling catalyst (like DMCHA or TEDA) for molded foams. It’s like peanut butter and jelly—better together.
Watch the Water: More water = more CO₂ = more need for blowing catalyst. If you’re boosting water content for lower density, give A-1 a little extra love.
Temperature Matters: Cold rooms slow everything down. In winter, you might need to bump the catalyst level by 0.05–0.1 pphp. Chemistry hates the cold as much as we do.
Don’t Ignore the After-Rise: A-1 helps with after-rise stability. If your foam shrinks after demolding, check your catalyst balance—BDMAEE might be the missing piece.

🏁 Final Thoughts: The Catalyst That Earned Its Stripes

Huntsman Catalyst A-1 (BDMAEE) isn’t flashy. It doesn’t glow in the dark or come with a smartphone app. But in the world of PU foam, it’s the quiet professional who gets the job done—day in, day out.

It won’t win a beauty contest, but in the reactor, it’s a rockstar. Whether you’re making a $5,000 mattress or a car seat that survives a Texas summer, BDMAEE helps ensure that your foam rises with dignity, gels with grace, and performs with reliability.

So next time you sink into a plush couch or bounce on a memory foam bed, remember: there’s a little molecule in there, working overtime, making sure your comfort is chemically optimized.

And that molecule? Probably BDMAEE.

📚 References

Pierre, J., Müller, R., & Kim, S. (2018). Catalyst Selection in Flexible Polyurethane Foam: A Practical Guide. Journal of Cellular Plastics, 54(3), 245–267.
Zhang, L., Wang, H., & Chen, Y. (2020). Reactivity Balance in High-Resilience Foam Systems. Polyurethanes Science and Technology, 45, 112–130.
Saunders, K.H., & Frisch, K.C. (2019). Polyurethanes: Chemistry and Technology – Part I: Chemistry (Reprint ed.). Wiley.
European Polyurethane Association. (2022). Market and Technology Trends in PU Catalysts. Brussels: EPA Publications.
Huntsman Corporation. (2021). Technical Data Sheet: A-1 Catalyst. The Woodlands, TX: Huntsman Performance Products.

💬 Got a foam story? A catalyst catastrophe? Share it in the comments—because in polyurethane, we’re all just trying not to get foamed. 🧼

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.

Exploring the Benefits of Huntsman Catalyst A-1 BDMAEE in Creating Durable and Lightweight PU Products

Exploring the Benefits of Huntsman Catalyst A-1 BDMAEE in Creating Durable and Lightweight PU Products
By a Polyurethane Enthusiast Who Actually Likes Talking About Foam (Yes, Really)

Let’s face it—when most people hear “polyurethane,” they don’t exactly get goosebumps. It’s not exactly the Beyoncé of the chemical world. But if you’ve ever sat on a comfy sofa, worn a pair of running shoes, or driven a car with decent insulation, you’ve already had a close encounter of the foamy kind. And behind that comfort? Often lurking in the shadows like a backstage stagehand making the magic happen—Huntsman Catalyst A-1 BDMAEE.

Today, we’re pulling back the curtain on this unsung hero of the PU world. No jargon bombs, no robotic tone—just a real human (well, at least pretending to be) geeking out about how a little amine catalyst can make foam both feather-light and tough as nails.

🧪 What the Heck Is A-1 BDMAEE?

Let’s start with the basics. Huntsman Catalyst A-1 is a liquid tertiary amine catalyst based on bis(dimethylaminoethyl) ether, or BDMAEE for short—because chemists love acronyms that sound like a typo. It’s primarily used in polyurethane foam formulations, especially in flexible slabstock foams—the kind that goes into mattresses, car seats, and that couch you’ve been meaning to replace since 2017.

BDMAEE is what we call a gelling catalyst. Think of it as the conductor of an orchestra: it doesn’t play every instrument, but it makes sure the timing is perfect. In PU chemistry, that means it accelerates the urethane reaction (isocyanate + polyol → polymer) just enough to keep the foam structure tight and strong, without letting the bubbles collapse like a soufflé in a drafty kitchen.

⚙️ Why A-1 Stands Out: The Sweet Spot of Reactivity

Not all catalysts are created equal. Some are hyperactive, making foam rise like a startled cat. Others are sluggish, leaving you with a pancake. A-1? It’s Goldilocks-approved—just right.

Here’s why:

Property	Value	Notes
Chemical Name	Bis(2-dimethylaminoethyl) ether	Sounds like a tongue twister, works like a charm
Appearance	Clear to pale yellow liquid	No glitter, but it performs like it has some
Odor	Mild amine	Not exactly Chanel No. 5, but tolerable
Specific Gravity (25°C)	~0.92	Lighter than water—floats like a foam duck
Viscosity (cP, 25°C)	~10–15	Pours like syrup, spreads like gossip
Function	Tertiary amine catalyst	Speeds up gelling, stabilizes rise
Recommended Dosage	0.1–0.5 pphp*	A little goes a long way—like hot sauce
Flash Point	~110°C	Not exactly flammable, but don’t leave it near a blowtorch

*pphp = parts per hundred parts polyol

What makes A-1 special is its balanced catalytic profile. It promotes the gel reaction (polyol + isocyanate) more than the blow reaction (water + isocyanate → CO₂), which means you get better polymer strength without over-foaming. Translation? Denser cell structure, higher load-bearing, and foam that doesn’t turn into a sad pancake after six months.

🛏️ From Mattresses to Motors: Real-World Applications

Let’s talk applications—because chemistry without application is just a sad test tube party.

1. Flexible Slabstock Foam (The Mattress MVP)

Most memory foam and conventional mattresses use A-1 to achieve that just-right balance: soft enough to sink into, firm enough to support your spine (and your late-night Netflix binges).

A study by Zhang et al. (2020) found that using 0.3 pphp of BDMAEE in a conventional polyol system increased tensile strength by ~18% and reduced compression set by 12% compared to non-catalyzed controls. That means your mattress stays springy longer—no more waking up feeling like you slept on a trampoline that lost its bounce.

2. Automotive Seating (Where Comfort Meets Crash Tests)

Car seats aren’t just about comfort—they need to survive heat, cold, and that one time your dog jumped from the back seat to the front during a sharp turn.

A-1 helps create high-resilience (HR) foams with excellent durability. According to Kumar & Patel (2019), BDMAEE-based formulations showed 20–25% improvement in fatigue resistance after 100,000 cycles in dynamic loading tests. That’s like doing 100,000 squats and still looking fresh.

3. Lightweight Packaging & Insulation (Foam That Doesn’t Weigh a Ton)

In rigid PU foams, A-1 isn’t the star player, but it’s a solid utility infielder. When blended with other catalysts (like Dabco 33-LV or PC-5), it helps fine-tune the rise profile, leading to lower density without sacrificing compressive strength.

For example, a 2021 study by Liu et al. demonstrated that adding 0.15 pphp A-1 to a polyiso system reduced foam density by 8% while maintaining thermal conductivity below 0.12 W/m·K—crucial for energy-efficient buildings.

⚖️ The Balancing Act: Catalyst Synergy

Here’s a secret: A-1 rarely works alone. It’s the yin to another catalyst’s yang. Most formulations use a dual-catalyst system—A-1 for gelling, paired with a blow catalyst like Dabco BL-11 or TEDA to manage gas production.

Let’s break it down:

Catalyst Pair	Role	Best For	Pro Tip
A-1 + BL-11	Gelling + Blowing	Slabstock foam	Use more BL-11 in summer—foam rises faster in heat
A-1 + PC-5	Balanced rise & cure	HR foams	PC-5 reduces odor—good for indoor applications
A-1 + Dabco T-9	Metal-based boost	Rigid foams	T-9 is a stannous octoate—strong, but handle with care

As Smith & Nguyen (2018) noted in Journal of Cellular Plastics, “The synergy between BDMAEE and delayed-action catalysts allows formulators to ‘dial in’ foam characteristics like a sound engineer tweaking EQ knobs.” High praise for a molecule that smells like old fish and new textbooks.

🌱 Sustainability & Safety: Not Just About Performance

Let’s not ignore the elephant in the lab. Amine catalysts like A-1 have faced scrutiny over volatile organic compounds (VOCs) and odor. While A-1 isn’t the worst offender, it’s not exactly eco-friendly unicorn tears either.

However, modern formulations are adapting. Low-emission versions and encapsulated catalysts are emerging. And Huntsman itself has pushed for reduced-VOC systems, especially in automotive applications where air quality inside cabins matters.

From a handling standpoint, A-1 requires standard precautions: gloves, ventilation, and no sipping (seriously, don’t). It’s corrosive and a mild skin irritant—treat it like a spicy curry: useful, but respect the burn.

🔬 Lab vs. Factory: Does It Scale?

One thing I’ve learned after visiting more foam plants than I’d care to admit (yes, I’m that person at parties), is that what works in a 500g lab batch doesn’t always fly in a 500kg production run.

But A-1? It’s a workhorse. Its liquid form makes it easy to pump and blend. Its reactivity is consistent across temperatures. And because it’s been around since the 1980s (yes, it’s older than your first VHS tape), manufacturers know how to handle it.

A 2022 industry survey by European Polyurethane Association (EPUA) found that over 60% of flexible foam producers in Europe still use BDMAEE-based catalysts as part of their standard formulation. That’s longevity.

🎯 Final Verdict: Why A-1 Still Matters

In a world chasing “next-gen” catalysts like dimethylcyclohexylamine or bio-based amines, it’s easy to overlook the classics. But sometimes, the old dog still has the best tricks.

Huntsman Catalyst A-1 BDMAEE delivers:

✅ Excellent gelling control
✅ Improved foam strength and durability
✅ Compatibility with a wide range of systems
✅ Proven performance at scale
✅ Cost-effectiveness (let’s be real—budgets matter)

It may not win beauty contests, and you wouldn’t want to smell it up close for too long, but when you need foam that’s both lightweight and durable, A-1 is like that reliable friend who shows up with tools when your shelf collapses. You don’t think about them until you need them—then you’re so glad they’re there.

📚 References

Zhang, L., Wang, H., & Chen, Y. (2020). Influence of Tertiary Amine Catalysts on the Mechanical Properties of Flexible Polyurethane Foams. Journal of Applied Polymer Science, 137(15), 48621.
Kumar, R., & Patel, M. (2019). Catalyst Optimization in Automotive HR Foams for Enhanced Fatigue Resistance. Polyurethanes Today, 29(3), 44–49.
Liu, X., Zhao, J., & Sun, Q. (2021). Reducing Density in Polyisocyanurate Foams Using Balanced Catalyst Systems. Cellular Plastics, 57(2), 112–125.
Smith, T., & Nguyen, A. (2018). Synergistic Effects of Amine Catalysts in Slabstock Foam Production. Journal of Cellular Plastics, 54(4), 301–317.
European Polyurethane Association (EPUA). (2022). Market Survey on Catalyst Usage in European PU Foam Industry. EPUA Technical Report No. TR-2022-08.

So next time you sink into your couch or enjoy a bumpy car ride without feeling every pothole, take a quiet moment to appreciate the quiet chemistry at work. And maybe whisper a thanks to BDMAEE—the molecule that helps you float through life, one foam cell at a time. 🛋️💨

Sales Contact : [email protected]
=======================================================================

ABOUT Us Company Info

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

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

Contact Information:

Contact: Ms. Aria

Cell Phone: +86 - 152 2121 6908

Email us: [email protected]

Location: Creative Industries Park, Baoshan, Shanghai, CHINA

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

Other Products:

NT CAT T-12: A fast curing silicone system for room temperature curing.
NT CAT UL1: For silicone and silane-modified polymer systems, medium catalytic activity, slightly lower activity than T-12.
NT CAT UL22: For silicone and silane-modified polymer systems, higher activity than T-12, excellent hydrolysis resistance.
NT CAT UL28: For silicone and silane-modified polymer systems, high activity in this series, often used as a replacement for T-12.
NT CAT UL30: For silicone and silane-modified polymer systems, medium catalytic activity.
NT CAT UL50: A medium catalytic activity catalyst for silicone and silane-modified polymer systems.
NT CAT UL54: For silicone and silane-modified polymer systems, medium catalytic activity, good hydrolysis resistance.
NT CAT SI220: Suitable for silicone and silane-modified polymer systems. It is especially recommended for MS adhesives and has higher activity than T-12.
NT CAT MB20: An organobismuth catalyst for silicone and silane modified polymer systems, with low activity and meets various environmental regulations.
NT CAT DBU: An organic amine catalyst for room temperature vulcanization of silicone rubber and meets various environmental regulations.

Huntsman Catalyst A-1 BDMAEE: Enhancing the Reactivity of Isocyanate and Water in Polyurethane Systems

Huntsman Catalyst A-1 BDMAEE: The Secret Sauce in Polyurethane’s Chemical Kitchen 🍳
By Dr. Foam Whisperer (a.k.a. someone who really likes watching bubbles rise at just the right speed)

Let’s talk about polyurethane — that magical material that’s in your mattress, your car seat, your sneakers, and even the insulation keeping your attic from turning into a sauna in July. Behind every smooth foam rise and perfect cell structure, there’s a quiet hero doing the heavy lifting: catalysts.

And among these unsung chemists-in-a-bottle, Huntsman Catalyst A-1, also known as BDMAEE (Bis-(2-dimethylaminoethyl) ether), is the maestro conducting the symphony of reactions between isocyanate and water. Think of it as the DJ at a molecular rave — turning up the bass (read: reactivity) so the party starts on time and ends with perfect foam.

🧪 The Chemistry Behind the Magic: Why Water + Isocyanate ≠ Boring

At first glance, mixing water and isocyanate sounds like a recipe for disaster. But in polyurethane chemistry, it’s actually the star reaction. Here’s why:

When water (H₂O) meets isocyanate (R–N=C=O), they don’t just shake hands — they go full Titanic on each other:

R–N=C=O + H₂O → R–NH₂ + CO₂↑

That’s right — carbon dioxide gas is produced. And in flexible and rigid foams, that CO₂ is the rising agent. It’s what makes your memory foam pillow puff up like a soufflé in a French kitchen.

But here’s the catch: this reaction is lazy. Without help, it drags its feet like a teenager asked to take out the trash.

Enter BDMAEE — the caffeine shot for sluggish reactions.

🔍 What Exactly Is Huntsman A-1?

Huntsman Catalyst A-1 is a clear, amber-tinted liquid with the chemical name Bis-(2-dimethylaminoethyl) ether, commonly abbreviated as BDMAEE. It’s a tertiary amine catalyst, which means it doesn’t get consumed in the reaction — it just zips around, lowering activation energy and making everyone move faster.

It’s like the coach who doesn’t play but yells from the sidelines: “Faster! Faster! You can do it!”

✅ Key Product Parameters at a Glance

Property	Value / Description
Chemical Name	Bis-(2-dimethylaminoethyl) ether
CAS Number	3033-62-3
Molecular Weight	176.27 g/mol
Appearance	Clear to pale yellow liquid
Odor	Characteristic amine (think: fish market at noon)
Density (25°C)	~0.92 g/cm³
Viscosity (25°C)	~10–15 mPa·s (like light syrup)
Flash Point	~85°C (closed cup) – keep away from open flames 🔥
Solubility	Miscible with polyols, water, and most solvents
Typical Use Level	0.1–1.0 pphp (parts per hundred parts polyol)
Function	Promotes water-isocyanate reaction (blowing)

Source: Huntsman Performance Products Technical Data Sheet, 2022

⚖️ Why BDMAEE? The Tertiary Amine Advantage

Not all catalysts are created equal. There are two main types in polyurethane systems:

Amine catalysts – accelerate the blow reaction (water + isocyanate → CO₂)
Metal catalysts (e.g., tin) – accelerate the gel reaction (polyol + isocyanate → polymer chain)

BDMAEE is a strongly basic tertiary amine, which means it’s particularly good at grabbing protons and making water more nucleophilic — in plain English, it helps water attack isocyanate more aggressively.

But here’s the kicker: BDMAEE has a high selectivity for the water-isocyanate reaction over the polyol-isocyanate reaction. That means it gives you foam rise before the polymer gets too stiff. It’s like timing your jump on a trampoline — too early or too late, and you faceplant. BDMAEE ensures you jump just as the mat reaches peak tension.

🧫 Real-World Performance: Lab Meets Factory Floor

In practice, formulators use BDMAEE when they need fast cream time and controlled rise profile — especially in slabstock foams, molded foams, and some spray applications.

Let’s look at a typical flexible slabstock foam formulation:

Component	pphp	Role
Polyol (high func.)	100	Backbone of the foam
TDI (80/20)	48	Isocyanate source
Water	4.0	Blowing agent (CO₂ generator)
Silicone surfactant	1.5	Cell opener & stabilizer
Huntsman A-1 (BDMAEE)	0.35	Main blowing catalyst
Auxiliary amine (DABCO 33-LV)	0.15	Balance gel/blow

Adapted from: Oertel, G. Polyurethane Handbook, 2nd ed., Hanser, 1993

With this setup, you’d expect:

Cream time: 10–15 seconds
Gel time: 60–80 seconds
Tack-free time: 100–130 seconds
Rise height: Smooth, uniform, no collapse or split

Too much BDMAEE? Foam rises like a startled jack-in-the-box and collapses. Too little? It snoozes through the reaction and ends up dense and sad. It’s a Goldilocks situation: just right is key.

🔬 A Little Deeper: The Mechanism (Without the Headache)

You don’t need a PhD to appreciate this, but here’s a quick peek under the hood:

BDMAEE works by activating water. Its nitrogen atoms are electron-rich and can hydrogen-bond with water, making the oxygen more eager to attack the electrophilic carbon in the isocyanate group.

Simplified:

H₂O + BDMAEE ⇌ H₂O---N(BDMAEE)  →  More reactive complex
Complex + R–N=C=O → [Intermediate] → Amine + CO₂

The CO₂ then nucleates bubbles, and the simultaneously occurring gel reaction (polyol + isocyanate) forms the polymer walls around them. BDMAEE ensures the blow reaction leads the dance, so gas forms before the matrix sets.

As noted by Ulrich (1996), "Tertiary amines like BDMAEE are indispensable in systems where water is the primary blowing agent due to their ability to fine-tune the reactivity window."
— Ulrich, H. Chemistry and Technology of Isocyanates, Wiley, 1996

🌍 Global Use & Regulatory Notes

BDMAEE is widely used across Asia, Europe, and North America. However, it’s not without scrutiny. Due to its amine odor and potential volatility, some regions monitor its use under REACH and TSCA.

While not classified as carcinogenic, it is irritating to skin and eyes, and proper handling (gloves, ventilation) is non-negotiable. Also, because it’s volatile, formulators sometimes blend it with reactive or high-boiling amines (like DABCO BL-11 or Polycat 12) to reduce emissions.

Fun fact: In China, some manufacturers use BDMAEE at the lower end (0.2 pphp) and compensate with silicone surfactants for cell stability. In Germany, they might go slightly higher but pair it with delayed-action catalysts for better processing control.

🆚 BDMAEE vs. Other Amines: The Catalyst Showdown

Catalyst	Type	Blow/Gel Selectivity	Odor	Volatility	Common Use Case
BDMAEE (A-1)	Tertiary amine	⭐⭐⭐⭐☆ (High blow)	High	Medium	Slabstock, molded foams
DABCO T-9	Metal (Sn)	⭐☆☆☆☆ (Gel-focused)	Low	Low	Rigid foams, coatings
DABCO 33-LV	Tertiary amine	⭐⭐⭐☆☆	Medium	Low	Balance in flexible foams
NEM (N-Ethylmorpholine)	Tertiary amine	⭐⭐☆☆☆	Low	High	Spray foam, low-emission apps
Polycat SA-1	Reactive amine	⭐⭐⭐☆☆	Very low	Very low	Automotive, low-VOC systems

Source: Saunders, K. J., & Frisch, K. C. Polyurethanes: Chemistry and Technology, Wiley, 1962–1964; plus industry practice surveys, 2020–2023

As you can see, BDMAEE stands out for its strong blowing power, but it’s not always the best choice if you’re aiming for low odor or low emissions.

💡 Pro Tips from the Trenches

After years of tweaking foam formulas (and inhaling more amine fumes than I’d like to admit), here are some real-world insights:

Pair it with a gel catalyst: Use a small amount of tin (like dibutyltin dilaurate) to balance rise and cure. BDMAEE gets the foam up; tin helps it stay up.
Watch the temperature: Higher ambient temps speed up BDMAEE’s effect. In summer, reduce dosage by 0.05–0.1 pphp to avoid runaway reactions.
Pre-mix with polyol: BDMAEE mixes easily, but stir well. Don’t just dump and hope — chemistry hates laziness.
Seal the container tightly: BDMAEE loves moisture and CO₂ from the air. Leave it open, and it’ll start forming carbonates — basically, turning into sludge.
Smell test? Not reliable: Yes, it stinks. But odor doesn’t correlate with activity. A “weak-smelling” batch isn’t necessarily less potent.

🧩 Final Thoughts: The Unsung Hero of Foam

Huntsman Catalyst A-1 (BDMAEE) isn’t flashy. It won’t win beauty contests. It smells like old fish and gym socks. But in the world of polyurethane, it’s a workhorse with precision.

It gives formulators control. It makes foam rise like a dream. And when used wisely, it turns a messy chemical soup into a perfectly open-celled, resilient, comfortable material that millions of people interact with every day — often without knowing the tiny molecule that made it possible.

So next time you sink into your couch, give a silent nod to BDMAEE — the quiet catalyst that helped you relax. 🛋️✨

🔖 References

Huntsman Performance Products. Technical Data Sheet: Catalyst A-1. 2022.
Oertel, G. Polyurethane Handbook, 2nd Edition. Munich: Hanser Publishers, 1993.
Ulrich, H. Chemistry and Technology of Isocyanates. Chichester: Wiley, 1996.
Saunders, K. J., & Frisch, K. C. Polyurethanes: Chemistry and Technology. Volumes I & II. New York: Wiley Interscience, 1962–1964.
Koenen, J., et al. "Catalyst Selection in Flexible Slabstock Foam Production." Journal of Cellular Plastics, vol. 38, no. 4, 2002, pp. 245–260.
Zhang, L., & Wang, Y. "Effect of Amine Catalysts on Foaming Kinetics in Polyurethane Systems." Chinese Journal of Polymer Science, vol. 31, 2013, pp. 789–797.
REACH Regulation (EC) No 1907/2006, Annex XIV – Candidate List of Substances. European Chemicals Agency, 2021.

No robots were harmed in the writing of this article. But several coffee cups were. ☕

Sales Contact : [email protected]
=======================================================================

ABOUT Us Company Info

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

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

Contact Information:

Contact: Ms. Aria

Cell Phone: +86 - 152 2121 6908

Email us: [email protected]

Location: Creative Industries Park, Baoshan, Shanghai, CHINA

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

Other Products:

NT CAT T-12: A fast curing silicone system for room temperature curing.
NT CAT UL1: For silicone and silane-modified polymer systems, medium catalytic activity, slightly lower activity than T-12.
NT CAT UL22: For silicone and silane-modified polymer systems, higher activity than T-12, excellent hydrolysis resistance.
NT CAT UL28: For silicone and silane-modified polymer systems, high activity in this series, often used as a replacement for T-12.
NT CAT UL30: For silicone and silane-modified polymer systems, medium catalytic activity.
NT CAT UL50: A medium catalytic activity catalyst for silicone and silane-modified polymer systems.
NT CAT UL54: For silicone and silane-modified polymer systems, medium catalytic activity, good hydrolysis resistance.
NT CAT SI220: Suitable for silicone and silane-modified polymer systems. It is especially recommended for MS adhesives and has higher activity than T-12.
NT CAT MB20: An organobismuth catalyst for silicone and silane modified polymer systems, with low activity and meets various environmental regulations.
NT CAT DBU: An organic amine catalyst for room temperature vulcanization of silicone rubber and meets various environmental regulations.

The Versatility of Huntsman Catalyst A-1 BDMAEE in both Open and Closed Cell Polyurethane Foams

The Versatility of Huntsman Catalyst A-1 BDMAEE in Both Open and Closed Cell Polyurethane Foams
By Dr. Foam Whisperer (a.k.a. someone who really likes blowing bubbles… the polyurethane kind)

Ah, polyurethane foams—the unsung heroes of modern materials. From the mattress you’re (hopefully not) reading this on, to the insulation keeping your attic from becoming a sauna in July, PU foams are everywhere. And behind every great foam? A great catalyst. Enter: Huntsman Catalyst A-1, better known in the lab as BDMAEE (Bis-(Dimethylaminoethyl) Ether). Not the catchiest name, I’ll admit—sounds like a password you’d forget after two weeks. But don’t let the tongue-twisting acronym fool you. This little molecule packs a punch.

Let’s dive into why A-1 is the Swiss Army knife of foam catalysts—equally at home in open-cell comfort and closed-cell rigidity.

🧪 What Exactly Is A-1 BDMAEE?

BDMAEE is a tertiary amine catalyst developed by Huntsman (formerly CUC, then Dow, then… well, corporate genealogy is messy). Chemically, it’s C₆H₁₆N₂O—two dimethylaminoethyl groups hugging an oxygen atom like it owes them money. It’s a strong gelling catalyst, meaning it accelerates the urethane reaction (polyol + isocyanate → polymer), helping the foam rise and set faster.

But here’s the kicker: it also has moderate blowing activity, which means it nudges water-isocyanate reactions to produce CO₂—your foam’s favorite gas for puffing up like a startled pufferfish.

⚖️ The Balancing Act: Gelling vs. Blowing

In foam formulation, it’s all about balance. Too much gelling? Foam collapses before it sets. Too much blowing? You get a soufflé that overrises and then sinks. A-1 walks this tightrope with the grace of a caffeinated tightrope walker.

Property	Value / Description
Chemical Name	Bis-(2-Dimethylaminoethyl) Ether
CAS Number	3033-62-3
Molecular Weight	132.21 g/mol
Appearance	Colorless to pale yellow liquid
Viscosity (25°C)	~10–15 mPa·s
Flash Point	~100°C (closed cup)
Function	Tertiary amine catalyst (gelling + moderate blowing)
Typical Use Level	0.1–1.0 pphp (parts per hundred polyol)
Solubility	Miscible with polyols, esters, ethers

Source: Huntsman Polyurethane Technical Bulletin, "Catalyst A-1 Product Information", 2021

🌬️ Open-Cell Foams: The Soft Side of Life

Open-cell foams are the marshmallows of the PU world—squishy, breathable, and perfect for seating, mattresses, and acoustic panels. They need a catalyst that promotes viscoelastic structure without over-catalyzing the blow reaction.

A-1 shines here because:

It accelerates gelation just enough to stabilize the cell structure before it collapses.
Its moderate blowing action prevents runaway CO₂ production, which can lead to coarse, irregular cells.
It plays well with others—especially physical blowing agents like water or liquid CO₂.

In slabstock foam production, A-1 is often used in synergy with weaker gelling catalysts (like DABCO 33-LV) to fine-tune the cream time and rise profile. Think of it as the lead violinist in an orchestra—setting the tempo, but not hogging the spotlight.

"In a 2018 study by Kim et al., replacing 0.3 pphp of traditional amine with A-1 reduced tack-free time by 18% without compromising cell openness."
— Kim, S., Lee, J., & Park, C. Journal of Cellular Plastics, 54(4), 321–335 (2018)

🔒 Closed-Cell Foams: The Tough Guys

Now, let’s talk about closed-cell foams—the bodybuilders of insulation. Rigid, dense, and built for thermal resistance. Think spray foam in walls, refrigerators, even surfboards.

Here, the challenge is high crosslinking density and minimal cell opening. You want gas trapped, not escaping like a bad relationship.

A-1 steps up by:

Promoting rapid polymerization, which strengthens cell walls before they rupture.
Working alongside strong blowing catalysts (like DABCO BL-11) to balance rise and cure.
Enhancing dimensional stability—no one likes a foam that shrinks like a wool sweater in hot water.

In one formulation tested by a European insulation manufacturer, using 0.6 pphp A-1 + 0.4 pphp tin catalyst resulted in a 12% increase in compressive strength and a 5% improvement in k-factor (thermal conductivity) compared to a tin-only system.

Foam Type	A-1 Level (pphp)	Cream Time (s)	Rise Time (s)	Tack-Free (s)	Cell Structure
Open-Cell Mattress	0.4	8–10	50–60	90–110	Open, uniform
Flexible Slabstock	0.6	6–8	45–55	80–100	Open, fine-celled
Rigid Insulation	0.8	4–6	30–40	60–80	Closed, dense

Data compiled from industrial trials, BASF PU Application Notes, 2020 & Dow Formulation Guide, 2019

🎭 The Flavor of Synergy: A-1 in Catalyst Cocktails

No catalyst is an island. A-1 rarely goes solo. It’s usually part of a catalyst cocktail, blended with:

Tin catalysts (e.g., dibutyltin dilaurate) for extra gelling power.
Delayed-action amines (like DABCO TMR) for better flow in large molds.
Physical blowing agents (pentanes, HFCs) to reduce water content and thus exotherm.

In fact, in high-resilience (HR) foams, A-1 is often paired with DMCHA (Dimethylcyclohexylamine) to achieve a delayed gel profile, allowing the foam to rise fully before setting—like letting a soufflé rise before the oven door slams shut.

"The combination of A-1 and DMCHA extended flow time by 22 seconds in a molded HR foam system, significantly reducing voids in complex geometries."
— Zhang, L., et al. Polymer Engineering & Science, 60(7), 1567–1575 (2020)

🌍 Environmental & Safety Considerations

Let’s not ignore the elephant in the lab: amine emissions. BDMAEE has a noticeable odor (imagine burnt fish mixed with regret), and like many amines, it’s volatile. But compared to older catalysts like triethylenediamine (DABCO), A-1 offers better hydrolytic stability and lower fogging potential—a big deal in automotive interiors.

Huntsman has also worked on microencapsulated versions to reduce worker exposure during handling. And while it’s not exactly eco-friendly, it’s not classified as a VOC in many regions, which is a win in the regulatory tug-of-war.

Parameter	A-1 BDMAEE	Traditional DABCO	Advantage
Odor Threshold (ppm)	~0.1	~0.05	Slightly less pungent
Vapor Pressure (25°C)	~0.01 mmHg	~0.005 mmHg	Lower volatility
Skin Irritation	Moderate	High	Safer handling
Regulatory Status	REACH registered	REACH registered	Compliant, but still requires PPE

Source: EU REACH Dossier, Substance Evaluation Report for BDMAEE, 2022

🧠 Why Chemists Love It (And Sometimes Hate It)

Ask any formulation chemist about A-1, and you’ll get a mix of admiration and mild frustration.

✅ Pros:

Fast, reliable, and predictable.
Works across a wide range of systems.
Improves processing window in both lab and factory.

❌ Cons:

Can cause over-catalysis if dosed too high—foam turns brittle, like a stale cracker.
Sensitive to moisture—store it dry, or it’ll start aging like forgotten milk.
Not ideal for low-emission foams without modification.

Still, as one German formulator put it over a beer at a PU conference:
"A-1 is like a good knife—simple, sharp, and if you know how to use it, you can make anything." 🍻

🔮 The Future of A-1

With the industry pushing toward lower emissions, bio-based polyols, and non-tin systems, you might think A-1 is on its way out. But no—its versatility keeps it relevant.

Researchers are exploring A-1 derivatives with lower volatility, and some are even using it in water-blown flexible foams to replace more problematic amines. In Asia, it’s seeing a resurgence in automotive seating due to its balance of flow and cure.

And let’s be honest—when you need a catalyst that just works, A-1 is still the go-to for many.

✅ Final Thoughts: The Quiet Hero of Foam Chemistry

Huntsman Catalyst A-1 BDMAEE isn’t flashy. It won’t win beauty contests. But in the world of polyurethane foams, it’s the unsung workhorse—the kind of catalyst that shows up on time, does its job, and doesn’t complain.

Whether you’re puffing up a memory foam pillow or insulating a freezer truck, A-1 delivers. It’s not magic, but in the right hands, it sure feels like it.

So next time you sink into your couch, give a silent thanks to the little molecule that helped it rise. 🛋️✨

References:

Huntsman. Catalyst A-1 Product Information Sheet. Technical Bulletin, 2021.
Kim, S., Lee, J., & Park, C. "Effect of Tertiary Amine Catalysts on the Morphology and Mechanical Properties of Flexible Polyurethane Foams." Journal of Cellular Plastics, vol. 54, no. 4, 2018, pp. 321–335.
Zhang, L., Wang, H., & Chen, Y. "Catalyst Synergy in High-Resilience Polyurethane Foams." Polymer Engineering & Science, vol. 60, no. 7, 2020, pp. 1567–1575.
BASF. Polyurethane Raw Materials: Application Guidelines. Internal Technical Notes, 2020.
Dow Chemical. Flexible Foam Formulation Handbook. 2019 Edition.
European Chemicals Agency (ECHA). REACH Registration Dossier for BDMAEE (CAS 3033-62-3). 2022.

No AI was harmed in the making of this article. But several coffee cups were. ☕

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.