WATER-DILUTABLE POLYURETHANE DISPERSIONS

摘要

The invention relates to water-dilutable polyurethane dispersions containing structural elements derived from polyisocyanates A, polyoles B having a numerical average molar physical mass Mn of at least 400 g/mol, compounds D which contain at least two groups which can react to isocyanate groups and a t least one group capable of forming anions, low molecular polyoles E which do not include another group which can react to isocyanate groups, compounds G which are monofunctional in relation to isocyanates or contain active hydrog en having various types of reactivities and which are different from compounds E. The invention is characterised in that polyoles B contain at least one physical mass part of 85 % in relation to polycarbonate polyoles B1. The invention also relates to the use thereof in coating agents.