Polyisocyanurate foams made with polyester polyols and...

Details Polyisocyanurate foams made with polyester polyols and... Polyisocyanurate foams made with polyester polyols and...

C - Chemistry, Metallurgy

08

G

C08G 18/42 (2006.01) B32B 5/18 (2006.01) C08J 9/06 (2006.01) C08J 9/12 (2006.01) C08J 9/14 (2006.01)

Patent

CA 2073183

ABSTRACT A process for the manufacture of a rigid, closed-cell polyisocyanurate foam from a foam forming mixture comprising an organic polyisocyanate, a polyol, a blowing agent, and a catalyst, utilizing a polyester polyol as the sole polyol, and chlorodifluor- omethane or a mixture of chlorodifluoromethane and at least one co- blowing agent as the blowing agent.

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