Process for painting substrates

摘要

The invention relates to a process for painting substrates comprising the following steps:
1. applying a coating composition to an optionally pre-coated substrate and2. hardening the applied coating composition, wherein the coating composition comprises:A) at least one binder having functional groups containing active hydrogen,B) at least one polyisocyanate cross-linking agent having free isocyanate groups andC) at least one urethane compound having at least two —O—CO—NH— groups, wherein the urethane compound is substantially free from functional groups which are capable of entering into a cross-linking reaction with components A) and/or B) and wherein the hardening is carried out under conditions such that the component C) does not contribute to the cross-linking of the applied coating composition by chemical reaction.

主权项

1. Process for painting substrates comprising the following steps:
1. Applying a coating composition to an optionally pre-coated substrate and 2. Curing the applied coating composition, wherein the coating composition comprises: A) at least one binder having functional groups containing active hydrogen, B) at least one polyisocyanate cross-linking agent having free isocyanate groups and C) at least one urethane compound having at least two —O—CO—NH— groups, wherein the urethane compound is free from functional groups which are capable of entering into a cross-linking reaction with components A) and/or B), said urethane compound is prepared by reacting a mixture consisting essentially of i) the isocyanurate of isophorone diisocyanate; ii) cyclohexanol; and optionally iii) organic solvent.