Rigid foams, methods for preparation thereof and compositions us

Details Rigid foams, methods for preparation thereof and compositions us Rigid foams, methods for preparation thereof and compositions us

1991-04-11

1993-03-16

Foelak, Morton

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

25218226, 25218227, 521131, 521174, 521175, 521167, C08J 906, C08G 1814

Patent

active

051941759

ABSTRACT:
A method for preparation of rigid foam disclosed. The method comprises mixing at least two components to form a reaction mixture. The reaction mixture comprises isocyanate, up to about 20% by weight CHClF.sub.2, up to about 2% by weight of water, and a combination of polyols having an average OH number of from about 300 to about 500 and comprising polyalkoxylated glycerin having an OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms. Related methods and compositions are also disclosed.

REFERENCES:
patent: 4530777 (1985-07-01), Kennedy

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