Process for producing isocyanate-based foams

Details Process for producing isocyanate-based foams Process for producing isocyanate-based foams

C - Chemistry, Metallurgy

08

G

C08G 18/48 (2006.01) C08G 18/40 (2006.01) C08G 18/66 (2006.01) C08J 9/14 (2006.01)

Patent

CA 2115098

PROCESS FOR PRODUCING ISOCYANATE FOAMS ABSTRACT OF THE DISCLOSURE Isocyanate-based foams are produced by the reaction of polyisocyanates with compounds with molecular weights of from 400 to 10,000 and having at least two hydrogen atoms active towards isocyanates in the presence of hydrocarbons which are vaporizable under the foaming conditions as blowing agents. The active hydrogen component is a mixture of a) one or more nitrogen-free polyethers having at least two hydrogen atoms active towards isocyanates and containing oxyethylene residues, and b) one or more polyethers having at least two hydrogen atoms active towards isocyanates and containing no oxyethylene groups.

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