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:
May. 27, 1997
Filed:
Nov. 04, 1994
Applicant:
Inventors:
Joseph T Valko, Pittsburgh, PA (US);
Richard F Karabin, Ruffs Dale, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
204500 ; 523415 ; 523404 ; 525528 ; 528 45 ; 528 73 ; 427386 ; 204506 ;
Abstract
An electrodepositable composition is provided comprising: a non-gelled, cationic, water-dispersible resin, electrodepositable on a cathode, which is derived from a polyepoxide and which contains in the resin molecule cationic salt groups, beta-hydroxy ester groups, active hydrogen groups including free phenolic hydroxyl groups, and capped isocyanate groups. The composition provides excellent corrosion resistance when electrodeposited over steel substrates, and does not require lead in the formulation nor the use of a conventional chrome rinse for the steel substrate during pretreatment before electrodeposition.