Eastman-Kodak Company

Peter M Grant

Robert B Taylor

Richard L McConnell

Richard J Brewer

Robert L Combs

Robert R Sanders

Thermosetting powder coating compositions comprising cellulose butyrate having a butyryl content of from about 35% to about 55% by weight, a hydroxyl content of from about 0.5% to about 3.0% by weight, and a viscosity of from about 0.05 to about 1.0 second are disclosed. The composition further comprises a crosslinking agent and a catalyst which allows the powder to flow out prior to fusion. Coatings formed by this composition have excellent physical properties and appearance.

Thermosetting cellulose ester powder coating composition

A thermosetting powder coating composition comprises a low molecular weight cellulose acetate butyrate as the major component, an aminoplast crosslinking agent, a latent acid crosslinking catalyst, and certain poly(alkylene glycols).

Thermosetting cellulose ester powder coating compositions

A powder coating composition particularly useful in coating unprimed substrates which comprises a particulate form of a carboxylated polyolefin. The carboxylated polyolefin is prepared by reacting a polyolefin with an unsaturated dicarboxylic acid component. The carboxylated polyolefin has a saponification number of about 2 to about 12. The carboxylated polyolefin also has either a melt flow of from about 15 to about 175 g./10 minutes at 230.degree.C. or a melt index of 5 to 75 at 190.degree.C. The particulate form has a particle size of less than 20 mesh.

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Kingsport, TN, United States of America

Peter M Grant