Low-cost surfactant compositions for high resiliency flexible fo

Details Low-cost surfactant compositions for high resiliency flexible fo Low-cost surfactant compositions for high resiliency flexible fo

1981-09-08

1982-08-31

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521112, C08G 1814

Patent

active

043473300

ABSTRACT:
The method for improving cell structure with little or no shrinkage or foam collapse in molded high resilience open celled flexible polyurethane foams prepared by the reaction of an organic polyol having a hydroxyl functionality of at least 2 with an organic polyisocyanate in the presence of a blowing agent. This method comprises incorporating with the reactants three cell modifiers consisting of a polysiloxane-polyoxyalkylene copolymer, a polymethylsiloxane, and a polyether polyol cell modifier containing polyoxyethylene groups in amount of at least about 80 percent by weight of said polyether polyol.

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patent: 4139503 (1979-02-01), Kollmeier et al.
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patent: 4163830 (1979-08-01), Windemuth et al.

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