Patent ID: 9587140
Date: 2017-03-07
CPC Classifications: B05D,C08G,C08K,C09D,Y10T

Claim:
1. A process for forming a coating layer over a substrate, said process comprising the steps of: A) providing a crosslinkable component comprising a film forming polymer having a crosslinkable functional group, wherein the crosslinkable functional group is a hydroxyl group, and wherein the crosslinkable component comprises in a range of from about 20% to about 80% of water, percent based on the total weight of the crosslinkable component; B) providing a crosslinking component comprising: (a) an alkylated melamine that is essentially free from isocyanate reactive hydrogen such that the alkylated melamine is essentially unreactive to a polyisocyanate; and (b) a polyisocyanate having two or more free isocyanate crosslinking functional groups; C) mixing said crosslinkable component with said crosslinking component to form a coating composition, wherein said coating composition is essentially free from acid catalyst; D) applying said coating composition over said substrate to form a wet coating layer thereon; and E) curing said wet coating layer at a temperature in a range of from about 80° C. to about 200° C. to form said coating layer.