Patent ID: 9745401
Date: 2017-08-29
CPC Classifications: C08G,C09D

Claim:
1. A non-aqueous coating composition consisting essentially of: (a) an aliphatic or cycloaliphatic polyisocyanate, (b) a polyol having an average functionality of more than 3 hydroxyl groups per molecule, wherein the polyol is selected from polyester polyols, polyacrylate polyols, polycarbonate polyols, polyurethane polyols, melamine polyols, and mixtures thereof, (c) a metal based curing catalyst for the addition reaction of isocyanate groups and hydroxyl groups, based on a metal selected from the group consisting of tin, bismuth, zirconium, and mixtures thereof and (d) a mercapto carboxylic acid, wherein the coating composition does not contain a carboxylic acid wherein the carbonyl group of the carboxylic acid is in conjugation with a π-electron system.