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:
Jun. 15, 2004
Filed:
May. 16, 2001
Ralph C. Gray, Butler, PA (US);
Ellor James Van Buskirk, Wexford, PA (US);
Michael J. Pawlik, Glenshaw, PA (US);
Richard M. Nugent, Jr., Allison Park, PA (US);
Dennis W. Jones, Glenshaw, PA (US);
Kathleen M. Coldren, Leechburg, PA (US);
Steven D. Perrine, Allison Park, PA (US);
James E. Jones, Butler, PA (US);
PPG Industries Ohio. Inc., Cleveland, OH (US);
Abstract
A curable coating composition is disclosed comprising a resinous binder comprising (a) a reaction product of an epoxy-containing polymer with a compound containing phosphorus acid groups, the reaction product having reactive functional groups, and (b) a curing agent having functional groups reactive with the functional groups of (a). An electroconductive pigment is dispersed in (a) such that the weight ratio of the electroconductive pigment to (a) plus (b) is within the range of 0.5 to 9.0:1. When the curable coating composition is deposited and cured on a metal substrate, the cured coating is weldable.