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Highly selective tertiary amine catalyst optimized for polyol-isocyanate reactions in flexible and semi-rigid PU foams.
Excellent balance of gelling and blowing activity, enabling precise control over foam rise profile and cell structure.
Low volatility and low odor profile, supporting improved workplace safety and reduced VOC emissions.
Compatible with conventional and bio-based polyols, as well as aromatic and aliphatic isocyanates.
Stable in storage under recommended conditions; non-corrosive to common processing equipment.
Flexible slabstock polyurethane foam for bedding and furniture manufacturing.
Semi-rigid automotive seating and headrest foams requiring consistent density and comfort properties.
Carpet underlay and acoustic insulation foams demanding uniform cell morphology and resilience.
Industrial packaging foams where dimensional stability and shock absorption are critical.
Water-blown or low-emission PU systems targeting green building certifications (e.g., GREENGUARD).
| Chemical Type | Tertiary amine compound |
| Product Form | Liquid |
| Appearance | Clear, pale yellow liquid |
| Primary Applications | Foaming catalyst for flexible and semi-rigid polyurethane foams |
| Key Features | Controlled reactivity, low odor, high compatibility |
| Benefits | Improved foam uniformity, reduced post-curing time, enhanced worker safety |
| Storage Conditions | Store in original sealed container at 5–30 °C, protect from moisture and direct sunlight |
| Shelf Life | 24 months from date of manufacture when stored properly |
Q1: What is the primary function of TMG 318 in polyurethane systems?
A: TMG 318 is a highly selective tertiary amine catalyst that primarily promotes the urethane reaction (isocyanate–polyol coupling), enabling controlled gelation and improved processing window in flexible and rigid foam formulations.
Q2: How does TMG 318 compare to traditional amine catalysts like DABCO® 33-LV or TEDA?
A: Unlike strongly volatile or broadly active amines, TMG 318 offers lower volatility, reduced odor, and enhanced selectivity for the gelling reaction over the blowing reaction—supporting better foam stability and finer cell structure in sensitive applications.
Q3: Is TMG 318 compatible with moisture-cure or one-component PU systems?
A: Yes, TMG 318 is suitable for use in one-component moisture-curing polyurethane sealants and adhesives, where its balanced activity helps achieve consistent cure profiles without excessive surface tack or premature skinning.
Q4: What handling precautions should be observed when working with TMG 318?
A: As with most amine catalysts, TMG 318 should be handled in well-ventilated areas; skin and eye contact should be avoided. Use appropriate PPE including nitrile gloves and safety goggles. Store in tightly sealed containers away from strong acids and oxidizing agents.
Q5: What is the typical dosage range for TMG 318 in standard polyurethane foam formulations?
A: Dosage depends on formulation requirements and desired reactivity profile, but TMG 318 is typically used at low concentrations—generally ranging from 0.1% to 2% by weight relative to the polyol component.
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E-mail: wangxingqiang@ericwchem.com
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