Method for producing cold polyurethane foams

Details Method for producing cold polyurethane foams Method for producing cold polyurethane foams

1995-04-28

1996-01-02

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

528 28, C08G 1828

Patent

active

054809169

ABSTRACT:
High resilience polyurethane foams are produced by reacting a mixture of highly reactive polyols having a weight average molecular weight between about 4800 and 6500 g/mole and containing at least 70% primary hydroxyl groups and optionally fillers, polyfunctional isocyanates, amine activators, cross-linking agents, tin catalysts, blowing agents and stabilizers. The inventive stabilizers can be used universally in high resilience slabstock foam systems as well as in high resilience molded foam systems and in formulations based on pure TDI, TDI/MDI mixtures as well as on pure MDI in combination with appropriate polyols.

REFERENCES:
patent: 3741917 (1926-06-01), Morehouse
patent: 3952038 (1920-04-01), Prokai
patent: 4031044 (1921-06-01), Joslyn
patent: 4039490 (1977-08-01), Kanner
patent: 4067828 (1978-01-01), Kanner et al.
patent: 4110272 (1979-08-01), Kanner et al.

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