Patent ID: 9546285
Date: 2017-01-17
CPC Classifications: B05D,C08G,C08K,C09D

Claim:
1. A clearcoat coating composition based on organic solvents and comprising: 30-70% by weight of at least one hydroxyl-containing compound (A); 20-50% by weight of at least one crosslinking agent (B) having groups reactive toward hydroxyl groups; 2-20% by weight of at least one silica gel based matting agent (M) comprising silica gel that is surface-modified with one or more waxes; and 0.01-3.0% by weight of at least one hydrophobic silica based rheological assistant (R); wherein the weight percents are based on the nonvolatile constituents of the coating composition, and wherein the at least one hydrophobic silica based rheological assistant (R) is prepared by surface modification of fumed silicon dioxide with compounds having hydrophobic groups, wherein, upon curing, the clearcoat coating composition is effective to not increase gloss, at an angle of 60°, by more than 10 gloss units after shearing by pumped circulation in a circuit line.