Rigid foam with improved "k" factor by reacting a...

Details Rigid foam with improved "k" factor by reacting a... Rigid foam with improved "k" factor by reacting a...

C - Chemistry, Metallurgy

08

J

403/13, 403/40,

C08J 9/00 (2006.01) B32B 5/18 (2006.01) C08G 18/10 (2006.01) C08G 18/42 (2006.01) C08J 9/02 (2006.01)

Patent

CA 2014761

4/11/89 PATENT B 1299 ABSTRACT Rigid cellular polymers are made by reacting an. isocyanate-terminated quasi-prepolymer with a polyol component comprising a polyester polyol having a free glycol content of less than about 7 percent by weight of the polyester polyol in the presence of a blowing agent. The combined use of the quasi-prepolymer and the polyester polyol enhances the thermal insulating properties of the foams.

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