Process for preparation of polyurethane-polycarbodiimide foam

Details Process for preparation of polyurethane-polycarbodiimide foam Process for preparation of polyurethane-polycarbodiimide foam

C - Chemistry, Metallurgy

08

G

C08G 18/54 (2006.01) C08G 8/20 (2006.01) C08G 18/16 (2006.01) C08J 9/02 (2006.01) C08J 9/12 (2006.01)

Patent

CA 2107138

Abstract of the Disclosure: A process for preparation of a polyurethane- polycarbodiimide foam which comprises reacting a polyol component containing a benzylic ether type phenol resin having hydroxymethyl groups with an organic poly- isocyanate component in the presence of an organotin catalyst for urethane formation and a carbodiimidating catalyt. According to this process, it is unnecessary to use fluorine-containing halogenated hydrocarbons as a blowing agent, and blowing on the spot is possible using a spray blowing machine or the like.

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