Ppg Industries Ohio, Inc.

Carolyn A K Novak

Charles M Kania

Thomas R Hockswender

Roxalana Lee Martin

Mark A Tucker

Deirdre D Ragan

Mary Beth Grolemund

Alicia Williams

Paul H Lamers

Christopher A Verardi

Michele L Meli

Provided is a film-forming composition substantially free of organic solvent which includes an aqueous dispersion of polymeric microparticles prepared by emulsion polymerization of a monomeric composition containing (1) at least 10 percent by weight of one or more vinyl aromatic compounds; (2) 0.1 to 10 percent by weight of one or more carboxylic acid functional polymerizable, ethylenically unsaturated monomers; (3) 0 to 10 percent by weight of one or more polymerizable monomers having one or more functional groups capable of reacting to form crosslinks; and (4) one or more polymerizable ethylenically unsaturated monomers. Each of (1), (2), (3) and (4) are different one from the other and at least one of (3) and (4) is present in the monomeric composition. Multi-layer composite coatings and coated substrates also are provided.

Organic solvent-free film-forming compositions, multi-layer composite coatings, and related methods

Aqueous resinous binders comprising graft copolymers, water-dilutable urethane polyols, epoxy-phosphorus acid reaction products, and an aqueous dispersion comprising the reaction product of trimellitic anhydride and a polyol, wherein the molar ratio of trimellitic anhydride to the polyol in the reaction product ranges from 1:2 to 1:4, and wherein the reaction product is further reacted with an anhydride to form another reaction product are disclosed. The binders are useful in primer formulations for automotive applications.

Aqueous resinous binders

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Gibsonia, PA, United States of America

Carolyn A K Novak