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. 17, 1987
Filed:
Aug. 19, 1985
Dennis A Simpson, Koppel, PA (US);
Debra L Singer, Pittsburgh, PA (US);
Rostyslaw Dowbenko, Gibsonia, PA (US);
William P Blackburn, Evans City, PA (US);
Charles M Kania, Tarentum, PA (US);
PPG Industries, Inc., Pittsburgh, PA (US);
Abstract
A color-plus-clear coating system is disclosed. A pigmented or colored base coat is first applied to a substrate followed by the application of a transparent top coat to the base coat. Either the transparent top coat, the base coat or both the top coat and base coat compositions are crosslinkable compositions comprising a polyepoxide and a polyacid curing agent which comprises a half-ester formed from reacting an acid anhydride with a polyol. The polyepoxide-polyacid curing agent in the transparent top coat provides a composite coating with outstanding gloss and distinctness of image making the composite coating particularly useful as an automotive top coat.