Method for preparing a flexible polyurethane foam

Details Method for preparing a flexible polyurethane foam Method for preparing a flexible polyurethane foam

1989-04-14

1991-03-05

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521130, 521 97, 521131, 521158, 521905, C08G 1814

Patent

active

049978586

ABSTRACT:
A method for preparing a flexible polyurethane foam, wherein a polyether-polyol having an average molecular weight from 1000 to 8000 and an average functionality not larger than 4, is brought into reaction with an organic polyisocyanate in the presence of a foam stabilizer, a catalyst and blowing agent comprising methylformate, wherein a cross-linker/extender and/or amine catalyst with delayed action is added to said reaction mixture.

REFERENCES:
patent: 3879315 (1975-04-01), Watkinson et al.
patent: 4139686 (1979-02-01), Jabs et al.
patent: 4247654 (1981-01-01), Wagner

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