Polyurea rim systems having improved flow properties

Details Polyurea rim systems having improved flow properties Polyurea rim systems having improved flow properties

C - Chemistry, Metallurgy

08

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C08G 18/66 (2006.01) B29C 45/00 (2006.01) C08G 18/65 (2006.01) C08K 5/15 (2006.01)

Patent

CA 1328526

POLYUREA RIM SYSTEMS HAVING IMPROVED FLOW PROPERTIES ABSTRACT OF THE DISCLOSURE The present invention is directed to a RIM process and an isocyanate-reactive mixture useful therein. The mixture comprises i) a polyether having at least two isocyanate-reactive groups and a molecular weight of from 1800 to 12,000 in which at least 50% of the isocyanate-reactive groups are primary and/or secondary amine groups, ii) an amine-terminated chain extender, and iii) from 2 to 20 parts by weight per 100 parts by weight of components b) and c) of a cyclic alkylene carbonate.

601021

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