Polyurethane foams containing high levels of silicone-containing

Details Polyurethane foams containing high levels of silicone-containing Polyurethane foams containing high levels of silicone-containing

1995-10-27

1997-11-11

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521131, 521172, 528 28, 556439, 556440, 556445, 556449, C08G 1834, C08J 914

Patent

active

056864990

ABSTRACT:
There is now provided a closed cell rigid polyurethane foam made from a polyol composition containing a polyol having polyester linkages and a number average molecular weight of 400 or more, and at least about 8 php of a silicone-containing surfactant polymer. Either mixed into the polyol composition at the time of foaming, mixed into an isocyanate, or both, is an aliphatic or cycloaliphatic C.sub.4 -C.sub.7 hydrocarbon.

REFERENCES:
patent: 4146498 (1979-03-01), Sandner et al.
patent: 4588755 (1986-05-01), Kollmeier et al.
patent: 4751251 (1988-06-01), Thornberry
patent: 5093376 (1992-03-01), Mohring et al.
patent: 5362764 (1994-11-01), Londrigan et al.
patent: 5492939 (1996-02-01), Stanga et al.

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