Rigid foams with improved insulation properties and a...

Details Rigid foams with improved insulation properties and a... Rigid foams with improved insulation properties and a...

C - Chemistry, Metallurgy

08

J

C08J 9/228 (2006.01) C08G 18/72 (2006.01) C08J 9/14 (2006.01)

Patent

CA 2448159

Rigid foams having improved insulation properties are made by reacting a polyisocyanate with an isocyanate-reactive material in the presence of a blowing agent mixture composed of from about 5 to about 50 parts by weight of HFC-134a and from about 50 to about 95 parts by weight of HFC-245fa.

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