Patent ID: 6849705
Filing Date: 2005-02-01
Classification: C08G,Y10T

Abstract:
1. A polyaddition compound having uretdione and carboxyl groups, and having a melting range of between 40 and 200° C., a free NCO group content of from 0 to 5% by weight and an NCO functionality of at least 1.5, and a number-average molar mass of between 1000 and 10,000, prepared by reacting the following starting components: A) from 40 to 90% by weight of at least one polyisocyanate containing uretdione groups, B) from 3 to 30% by weight of at least one hydroxycarboxylic or mercaptocarboxylic acid, and 57 to 3% by weight of one or more of: C) at least one monofunctional compound having a functional group which is reactive toward an isocyanate, D) at least one aliphatic and/or cycloaliphatic polyol, E) at least one polyol having functional groups, and F) at least one aliphatic and/or cycloaliphatic polyamine.