Improved storage stable one component polyurethane system

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 75/04 (2006.01) C08G 18/10 (2006.01) C08G 18/32 (2006.01) C08G 18/42 (2006.01) C08G 18/48 (2006.01) C08G 18/66 (2006.01) C08G 18/76 (2006.01) C08K 5/095 (2006.01)

Patent

CA 2646027

In one aspect, the invention relates to storage-stable and flowable polyurethane compositions comprising (a) one or more isocyanate-terminated polyurethane prepolymers derived from one or more hydrocarbon ring-containing diisocyanates and/or triisocyanates and one or more polyols; (b) one or more metal salt complexes of methylenedianiline; and (c) one or more organic acid halide compounds having one or more acid halide groups, wherein the one or more organic acid halide compounds are in an amount wherein the acid halide groups are present in a minimum concentration of about 100 parts per million by weight of the polyurethane prepolymer. In other aspects, the invention relates to methods for storing the curable polyurethane compositions, as well as methods for producing polyurethane elastomers.

Sous un aspect, l'invention porte sur des compositions de polyuréthane stables au stockage et capables de s'écouler, comprenant (a) un ou plusieurs prépolymères de polyuréthane à terminaison isocyanate, dérivés d'un ou plusieurs diisocyanates et/ou triisocyanates contenant un noyau hydrocarboné et d'un ou plusieurs polyols; (b) un ou plusieurs complexes de sel métallique de méthylène dianiline; et (c) un ou plusieurs composés d'halogénure d'acide organique ayant un ou plusieurs groupes halogénure d'acide, où le ou les composés halogénure d'acide organique sont dans une quantité où les groupes halogénure d'acide sont présents dans une concentration minimale d'environ 100 parties par million en poids du prépolymère de polyuréthane. Sous d'autres aspects, l'invention porte sur des procédés pour stocker les compositions de polyuréthane durcissables, ainsi que sur des procédés pour fabriquer des élastomères de polyuréthane.

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