Coating composition having a high scratch resistance and weathering stability

摘要

The present invention relates to a coating composition comprising
(a) at least one hydroxyl-containing compound (A),(b) at least one compound (B) having free and/or blocked isocyanate groups, and(c) at least one phosphate-containing catalyst (C) for the crosslinking of silane groups,(d) at least one further catalyst (D),

one or more constituents of the coating composition containing hydrolyzable silane groups, wherein the catalyst (D) is a bicyclic amine.

主权项

1. A coating composition for application to a substrate comprising
(a) at least one hydroxyl-containing compound (A); (b) at least one compound (B) having free and/or blocked isocyanate groups; (c) at least one phosphorus-containing catalyst (C) comprising phosphorus and nitrogen, for the crosslinking of silane groups; and (d) at least one further catalyst (D) that is a bicyclic amine,wherein one or more constituents of the coating composition contain hydrolyzable silane groups, the isocyanate groups react with the at least one hydroxyl-containing compound (A), and the resulting coating composition is isocyanate-free;
wherein, upon curing of the coating composition, a coat that is chemical- and weather-stable is formed.