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Highly selective tertiary amine catalyst optimized for balanced gelling and blowing reactions in flexible slabstock foams.
Low volatility and reduced amine odor, supporting improved workplace safety and compliance with industrial hygiene standards.
Excellent compatibility with polyether polyols and common isocyanates (e.g., TDI, MDI), ensuring stable processing across diverse formulations.
Enables precise control over cream time, rise profile, and final cell structure without excessive post-cure requirements.
Non-corrosive to standard stainless steel and aluminum process equipment under normal handling conditions.
Flexible polyurethane slabstock foam for bedding and upholstered furniture.
High-resilience (HR) foam manufacturing requiring consistent density and airflow performance.
Automotive seating and interior trim foams with stringent VOC and fogging specifications.
Conventional and water-blown cold-cure molded foams.
Composite foam systems incorporating flame retardants or bio-based polyols.
| Chemical Type | Tertiary amine catalyst (N,N,N′,N′-tetramethyl-1,3-butanediamine derivative) |
| Product Form | Liquid |
| Appearance | Clear, colorless to pale yellow liquid |
| Primary Applications | Flexible slabstock and molded polyurethane foams |
| Key Features | Balanced reactivity, low volatility, low odor |
| Benefits | Improved process stability, reduced emissions, enhanced foam uniformity |
| Storage Conditions | Store in original sealed container at 15–25°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 248 in polyurethane systems?
A: TMG 248 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: Is TMG 248 suitable for low-emission or odor-sensitive applications?
A: Yes — TMG 248 exhibits low volatility and reduced amine odor compared to conventional aliphatic amines, making it well-suited for interior automotive foams, bedding, and other applications where VOC and odor performance are critical.
Q3: How does TMG 248 compare to traditional catalysts like DABCO® 33-LV in terms of reactivity profile?
A: TMG 248 offers a more balanced gelling-to-blowing ratio than many standard triethylenediamine derivatives, delivering smoother cream time progression and enhanced cell structure uniformity — particularly beneficial in high-output slabstock and molded foam production.
Q4: Can TMG 248 be used in water-blown or low-isocyanate-index systems?
A: Yes — TMG 248 maintains effective catalytic activity across a broad range of isocyanate indices and water contents, supporting stable processing in both conventional and emerging sustainable formulations with reduced environmental impact.
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E-mail: wangxingqiang@ericwchem.com
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