Basf Corporation

Richard J Foukes

Cynthia A Stants

Peter D Clark

Paul J Harris

The present invention is a powder coating composition including a resin mixture of polyurethane resin and acrylic resin and a crosslinking agent. The resulting resin has good flexibility and resistance to stone chipping.

Coating containing urethane and acrylic resin mixture for improved

The present invention relates to a thermoset powder coating composition and method of application. The coating includes a copolymer having a reactive functionality selected from the group consisting of epoxy, carboxy, and hydroxy functionalities and mixtures thereof, a suitable crosslinking agent capable of reaction with the reactive functionality on the copolymer, and an aliphatic or aromatic crystalline, hydroxyl containing compound having a melting point of between 30.degree. C. and 150.degree. C. and a flow control agent. The powder coating is a pigmented or clear coat powder composition applied over a primer layer.

Method for powder coatings

A thermosetting powder coating composition resistant to overspray incompatibility defects that comprises solid particulates of a uniform mixture of (a) a polyester resin having an average of two or more carboxyl groups, (b) a first crosslinker that is reactive toward the carboxyl groups of the polyester resin, (c) from 1% to 20% of a reactive acrylic copolymer having a weight average molecular weight of from 10,000 to 40,000, and (d) a second crosslinker that is reactive toward the reactive functionality of the acrylic copolymer is described.

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Utica, MI, United States of America

Richard J Foukes