Polymerizable solid aliphatic polyurethanes which contain olefinically unsaturated double bonds and which are based on linear diisocyanates, and their use

摘要

A polymerizable solid aliphatic polyurethane containing olefinically unsaturated double bonds, having a very narrow melting range within the temperature range from 40 to 200° C., which is preparable fromA) at least one linear aliphatic diisocyanate,B) at least one aliphatic compound containing at least two isocyanate-reactive functional groups and/or water, andC) at least one olefinically unsaturated compound containing an isocyanate-reactive functional group,and its use as a powder coating material or for preparing powder coating materials.