Production of polyurethane polymers, the polymers so...

Details Production of polyurethane polymers, the polymers so... Production of polyurethane polymers, the polymers so...

C - Chemistry, Metallurgy

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C08G 18/84 (2006.01) C08G 18/08 (2006.01) C08G 18/10 (2006.01) C08G 18/12 (2006.01) C08G 18/62 (2006.01) C08G 18/83 (2006.01)

Patent

CA 2034857

Z/QM 35608 ABSTRACT PRODUCTION OF POLYURETHANE POLYMERS, THE POLYMERS SO PRODUCED AND COMPOSITIONS CONTAINING THEM A polyurethane polymer having desired chain-pendant or in-chain groups Y is prepared by 1) converting terminal isocyanate groups of an isocyanate-terminated polyurethane prepolymer to groups providing carbon- or nitrogen-bound -NH 2 and/or -NH- groups, and 2) chain extending modified prepolymer fromed in 1) with a compound having at least two enolic carbonyl groups and also having at least one group Y which becomes chain-pendant or in-chain in the chain-extended polymer.

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