Polyol compositions containing high levels of silicone-containin

Details Polyol compositions containing high levels of silicone-containin Polyol compositions containing high levels of silicone-containin

1995-10-27

1998-01-06

Foelak, Morton

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

25218228, 521112, 521172, 556439, 556440, 556445, 556449, C08K 300

Patent

active

057058237

ABSTRACT:
There is now provided 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. The polyol composition is used to make a polyisocyanate based closed cell rigid foam by reacting an organic isocyanate and the polyol composition in the presence of an aliphatic or cycloaliphatic C.sub.4 -C.sub.7 hydrocarbon blowing agent.

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

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