| abstract |
The invention is directed to water-based coating compositions comprising: A) at least one cross-linkable water-reducible binder having acid functional groups and functional groups with active hydrogen, B) at least one polyisocyanate cross-linking agent with free isocyanate groups, C) water and optionally at least one organic solvent, wherein the acid functional groups of the at least one water-reducible binder A) are at least partly neutralized with at least one neutralizing agent, said neutralizing agent comprising a monoamine having a secondary amino group attached to a tertiary carbon atom, wherein said monoamine is preferably a reaction product of at least one monoamine having a primary amino group attached to a tertiary carbon atom and a mono-epoxide, or a reaction product of at least one monoamine having a primary amino group attached to a tertiary carbon atom and a mono-unsaturated compound. |