Ppg Industries Ohio, Inc.

Karen S Rechenberg

Karen A Barkac

Charles M Kania

Kurt A Humbert

James B O'Dwyer

Simion Coca

Masayuki Nakajima

Stephen G McQuown

Linda J Bowser

Anthony Michael Chasser

Lawrence G Anderson

John R Schneider

Paul H Lamers

Edward R Coleridge

John M Furar

Roy E Dean

Deirdre D Ragan

Karen B Allen

Anton Jurgetz

Susan A Campbell

Mildred Lisa Perrine

Disclosed is a coating formed from a composition containing a film-forming resin and a plurality of particles dispersed in the resin. The average particle size of the particles is 0.1 to 50 microns, and the particles have a hardness sufficient to impart greater mar and/or scratch resistance to the coating as compared to a coating where no particles are present. Also, the difference between the refractive ranges from 1 to 1.5. A method for preparing a powder coating including the particles also is provided.

Coating compositions providing improved mar and scratch resistance and methods of using the same

A thermosetting composition that includes a co-reactable solid, particulate mixture of a film forming material having functional groups, a crosslinking agent having at least two functional groups that are reactive with the functional groups in the film forming material, and a monocarboxylic acid. Multi-component composite coatings, coated substrates, and related methods are also provided.

Powder coating compositions

A thermosetting composition that includes a co-reactable solid, particulate mixture of a film forming material having functional groups and a crosslinking agent having at least two functional groups that are reactive with the functional groups in the film forming material. The crosslinking agent includes a copolymer having at least 30 mol % of alternating structural units of a residue from a donor monomer and a residue from one or more acrylic acceptor monomers. The thermosetting composition may coat a substrate by coalescing the composition to form a continuous film and curing the composition. The thermosetting composition may be included as part of a multi-component composite coating composition that includes an optional primer coat, a base coat deposited from a pigmented film-forming composition, and a transparent top coat applied over the base coat, where either the base coat, the transparent top coat, or both, are deposited from the thermosetting composition.

Powder coating compositions having improved mar and acid resistance

A curable film-forming composition of 5 to 95 weight percent (based on the total resin solids weight in the composition) of a crosslinking agent; 5 to 95 weight percent ot a polymer containing functional groups reactive with the crosslinking agent; and 0.01 to 15 weight percent of at least one additive selected from a reaction product of phosporous acid and: at least one diepoxide; at least one diepoxide and at least one anhydride; at least one diepoxide and at least one anhydride, chain extended with at least one diol; at least one monoepoxide and at least one anhydride, chain extended with at least one diepoxide; and mixtures thereof. The additives in the composition prevent thermal oxidation, minimizing visual effects (i.e., yellowing). A multi-component composite coating includes a base coat and a top coat which may be derived from the above curable film-forming composition.

Curable film-forming composition exhibiting improved yellowing resistance

A curable powder coating composition is disclosed comprising a film-forming polymer having reactive functional groups, a curing agent having functional groups reactive with the functional groups of the polymer, the curing agent being present in an amount sufficient to cure the coating composition, and a tricarbamoyl triazine compound. The curable powder coating composition has improved mar resistance properties.

Powder coating compositions demonstrating improved mar resistance

Curable powder clear coating composition and coated substrate with multilayered coatings have as the predominant film-forming polymer in the coating at least one epoxy acrylic copolymer in an amount from 60 to 99.99 percent by weight and 10 to 40 percent by weight of a polycarboxylic acid crosslinking agent. The percentages by weight are based on solids of the curable coating composition. A single predominant film-forming epoxy acrylic copolymer has a number average molecular weight in the range of about 1000 to 5500; a calculated Tg in the range of 50 to 85&deg; C.; epoxy content in the range of 35 to 85, and a styrene content resulting from an amount of styrene monomer in the range of up to about 25 weight percent based on the weight percent of the monomers to form the copolymer. The blend of epoxy acrylic copolymer has one polymer which is the single epoxy acrylic copolymer or one having a number average molecular weight in the range of about 1000 to about 10,000, a calculated Tg in the range of about 40&deg; C. to 85&deg; C., and an epoxy content from 40 to 60 weight percent of the total weight of the monomers to prepare the epoxy acrylic copolymer. The other polymer of the blend has a number average molecular weight in the range of about 500 to about 3000, a calculated Tg in the range of about 35&deg; C. to about 125&deg; C., and an epoxy content from glycidyl functional ethylenically unsaturated monomer that is higher than that of the first epoxy functional acrylic copolymer of the blend and in the range of about 50 to about 100.

Powder coating compositions and coated substrates with multilayered coatings

Coating compositions and coated substrates with the cured coatings of at least one curable film-forming resinous material along with an effective degassing amount of a material having the structure:

Coating compositions and coated substrates with good appearance properties

Growing community of inventors

Gibsonia, PA, United States of America

Karen S Rechenberg