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:
Sep. 30, 1997
Filed:
Nov. 16, 1995
Applicant:
Inventors:
Paul J Harris, West Bloomfield, MI (US);
Timothy S December, Rochester, MI (US);
Assignee:
BASF Corportion, Southfield, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; C25D / ; C08F / ; C08L / ;
U.S. Cl.
CPC ...
4284258 ; 428418 ; 2041817 ; 427487 ; 427512 ; 427520 ; 523414 ; 523417 ; 525504 ; 525523 ;
Abstract
Cathodic electrocoat compositions containing self-crosslinking polymers are described. The polymers of the invention are formed from an epoxide-functional prepolymer having polyepoxide and extender segments. Each extender segment has at least one pendant hydroxyalkyl carbamate group. The prepolymer is reacted with an amine compound having at least one blocked primary amine group and at least one epoxide-reactive group. The primary amine group is unblocked and the resultant polymer is dispersed in water with the aid of a neutralizing acid.