Ppg Industries Ohio, Inc.

Mark Slawikowski

Donald J Algrim

David E Lindow

A coating composition is substantially free from chromate and comprises a resin, a metal salt, and an interference pigment. The interference pigment includes mica which has a solar reflective coating disposed thereon. A reflective coating system comprises a cured film formed from the coating composition disposed on a substrate. The cured film has a transparency of at least 75%, as measured according to ASTM 1746. In addition, the cured film has a solar reflectivity of at least 55%, as measured according to ASTM E 1918 and ASTM E 903. The cured film has excellent corrosion resistance properties and adhesion to the substrate.

Coating composition and a reflective coating system including same

A grind resin, a pigment dispersion, and a coating composition are provided. The grind resin comprises a reaction product of a dibasic acid, optionally a polybasic acid, a diol, optionally a polyol, and a fatty compound. The fatty compound has a fatty chain and two reactive groups reactive with at least one of the dibasic acid and the diol provided that &#x2266;5% of all acid groups are provided by the polybasic acid and &#x3c;20% of all hydroxyl groups are provided by the polyol. The reaction product is substantially free from branching comprising the reaction product of acid groups or hydroxyl groups and the dibasic acid, polybasic acid, diol, polyol, or fatty compound. The pigment dispersion comprises a pigment and the grind resin. The coating composition comprises a vehicle resin, the pigment, the grind resin, and a cross-linking agent reactive with the vehicle resin and/or the grind resin.

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Brighton, MI, United States of America

Mark Slawikowski