High resiliency molded urethane foams containing high levels of

Details High resiliency molded urethane foams containing high levels of High resiliency molded urethane foams containing high levels of

1983-11-16

1984-10-16

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252182, 521112, 525477, C08G 1814

Patent

active

044776012

ABSTRACT:
A polyether based polyurethane foam is disclosed which contains high levels of reinforcing graft copolymer polyols. The graft copolymer polyol serves to open cells and to add firmness to the foam. This foam is stabilized by incorporating a blend consisting essentially of 3 to 22 weight percent of a surfactant designed for conventional urethane foams, with 78 to 97 weight percent of a surfactant designed for molded high resiliency urethane foams. The surfactants are of the polysiloxane-polyoxyalkylene copolymer type. The method of preparing this foam is also disclosed.

REFERENCES:
patent: 3398104 (1968-08-01), Haluska
patent: 3402192 (1968-09-01), Haluska
patent: 4031044 (1977-06-01), Joslyn
patent: 4139503 (1979-02-01), Kollmeier et al.
patent: 4147847 (1979-04-01), Schweiger
patent: 4347330 (1982-08-01), Demou et al.

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