Patent ID: 7049001

Claim:
A compound with carbodiimide units and carboxyl or carboxylate groups (compound V), derived from components consisting of: a) aliphatic or araliphatic C 4 to C 20 polyisocyanates (component a) b) hydroxy carboxylic acids or hydroxy carboxylic salts (component b) wherein component a and component b are first reacted together to form a reaction product and c) optionally, further reacting the reaction product of component a and component b with compounds, having 1 to 20 carbon atoms and containing hydroxyl and/or amino groups as isocyanate reactive groups in an addition reaction and having a molecular weight of less than 400 g/mol (component c) and d) optionally, other isocyanates (component d), the carbodiimide units being derived essentially exclusively from the isocyanate groups of component a).