| abstract |
The present invention relates to a mixture (M) which can be used as curing agent and adhesion promoter and which comprises at least two components (M1) which are different from one another and in each case independently of one another have free and/or blocked isocyanate groups and (M2), and optionally other components (M3) different from (M1) and (M2); component (M1) comprises at least one aliphatic polyisocyanate, and component (M2) comprises at least one Aliphatic polyisocyanates having polyether units in which (M1) and (M2) are in a relative weight ratio to one another of 25:1 to 3:1, in each case based on the solids of (M1) and (M2) content, and at least one of the components (M1), (M2) and optionally (M3) present in (M) has a hydrolyzable silane group, (M) acts as a curing agent and adhesion agent in the coating composition Use of enhancers, such coating compositions, and methods of at least partially coating a substrate with a primer coat and at least partially coating a substrate with a multicoat paint system. |