The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 1997
Filed:
Oct. 10, 1995
Gregory J McCollum, Hampton Township, Allegheny County, PA (US);
Karl F Schimmel, Penn Hills Boro., PA (US);
James A Claar, Washington Township, Westmoreland County, PA (US);
Joseph M Carney, Reserve Township, Allegheny County, PA (US);
Stephen J Thomas, Aspinwall, Boro., PA (US);
Leigh A Humbert, West Deer Township, Allegheny County, PA (US);
PPG Industries, Inc., Pittsburgh, PA (US);
Abstract
A coating composition is disclosed that comprises (a) a copolymer comprising alternating units of a vinyl monomer and an unsaturated diester monomer in which at least one of the esterifying groups includes a hydroxyl group, and (b) a hydroxy group-reactive curing agent. The diester monomer is formed by first opening an anhydride with an alcohol to form a monoester, and then alkoxylating the remaining acid group on the monoester with an epoxy compound to form a second ester group having hydroxyl functionality.