Isocyanate compositions for blown polyurethane foams

Details Isocyanate compositions for blown polyurethane foams Isocyanate compositions for blown polyurethane foams

C - Chemistry, Metallurgy

08

G

C08G 18/76 (2006.01) C07C 265/14 (2006.01) C08G 18/42 (2006.01) C08J 9/14 (2006.01)

Patent

CA 2289530

Rigid polyurethane foams are prepared from an isocyanate composition containing diphenylmethane diisocyanate, three ring oligomers of polyphenylene polymethylene polyisocyanate and higher homologues of polyphenylene polymethylene polyisocyanate.

L'invention concerne des mousses de polyuréthane rigides. Ces mousses sont préparées à partir d'une composition d'isocyanate comprenant du diphénylméthane diisocyanate, trois oligomères cycliques de polyphénylène polyméthylène polyisocyanate et des homologues supérieurs de polyphénylène polyméthylène polyisocyanate.

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