Method of manufacturing foam materials containing rigid...

Details Method of manufacturing foam materials containing rigid... Method of manufacturing foam materials containing rigid...

C - Chemistry, Metallurgy

08

J

C08J 9/32 (2006.01) C08J 9/00 (2006.01)

Patent

CA 2154045

The present invention relates to a process for the production of foam materials containing rigid urethane and/or optionally isocyanurate groups, and the foam materials produced by this process. This process comprises reacting a) one or more polyisocyanates, with b) one or more compounds containing at least two hydrogen atoms capable of reacting with isocyanate groups and having a molecular weight of 400 to 10,000, in the presence of c) organic fillers, and d) water and/or foaming agents comprising light volatile organic substances, and, optionally, e) compounds containing at least two hydrogen atoms capable of reacting with isocyanate groups and having a molecular weight of 32 to 399 and/or f) known auxiliary substances and additives. The organic fillers used according to the present invention consist essentially of a rigid foam polyurethane powder.

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