Ppg Industries Ohio, Inc.

University of California

William H Retsch

Gregory J McCollum

Stuart Damon Hellring

Anthony Michael Chasser

Hongying Zhou

Scott J Moravek

Edward Richard Millero, Jr

Robert D Herold

Michael Andrew Zalich

Brian K Rearick

John M Dudik

Adam Bradley Powell

Irina G Schwendeman

Jonathan P Breon

Charles R Hickenboth

Michael J Ziegler

Christopher Paul Kurtz

Paul H Berdahl

Michael G Olah

Carole A Conley

Daniel Connor

Anand K Atmuri

Theodore Frank Novitsky, Jr

Matthew William Skinner

Edward R Millero

Nina Bojkova

Zhou Hongying

There is described a method for the production of a functional polyester having functional group X. The method comprises the step of melt blending a composition comprising (i) a high number average molecular weight (Mn) polyester having a Mn of ≥6,000 Da; and (ii) a functional compound comprising functional group Y which may be the same as functional group X or be different to functional group X but be operable to form functional group X in the functional polyester. The composition is melt blended such that the high Mn polyester and the functional compound react to produce the functional polyester. The high Mn polyester has a Mn that is higher than the Mn of the functional compound. The present invention extends to functional polyesters produced by the method; aqueous, solventborne and powder coating compositions containing the functional polyester, and articles coated with the said coating compositions.

Functional polyester and method of producing the same

A hydroxy functional alkyl carbamate is disclosed having the formula: wherein R comprises a substituted or unsubstituted Cto Calkyl group, an aromatic group, and/or a polymeric moiety; wherein each Ris independently a hydrogen, alkyl having at least 1 carbon, or a hydroxy functional alkyl having 2 or more carbons and at least one Ris a hydroxy functional alkyl having 2 or more carbons; and n is 2-6. The present invention is also directed to a composition, and substrates coated therewith, comprising a film-forming resin; and a hydroxy functional alkyl carbamate crosslinker having the formula shown above. Other hydroxy functional alkyl carbamate compounds, polymers made with the same, and compositions comprising the same are also disclosed as are substrates coated at least in part with or formed with any of the compositions described herein.

Hydroxy functional alkyl carbamate crosslinkers

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Allison Park, PA, United States of America

William H Retsch