Catalyst and process for preparing rigid cellular...

Details Catalyst and process for preparing rigid cellular... Catalyst and process for preparing rigid cellular...

C - Chemistry, Metallurgy

08

F

252/124, 403/13

C08F 4/08 (2006.01) C08G 18/02 (2006.01) C08G 18/16 (2006.01) C08G 18/20 (2006.01)

Patent

CA 1065834

A S T R A C T This invention relates to po?yurothane foams and compositions and processes for preparing rigid urethane foams comprising reacting a mix- ture of a polyalkylene polyol having at least two reactive hydrogen atoms, at least one organic polyisocyanate, and, as a trimerization and polymeriza- tion catalyst combi??tion, at least one member of the group consisting of 1,3,5-tris(N,N-dialkylaminoalkyl)-hexahydrotriazines and 2,4,6-tris-(N,N- dialkylaminoalkyl) phenols and their adducts with alkylene oxide and water and at least one member of the group consisting of the alkali metal salts of carboxylic acids exhibiting from 2 to 19 carbon atoms.

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