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. 26, 1992
Filed:
Apr. 05, 1991
Applicant:
Inventor:
Taddesse Gebregiorgis, Sterling Heights, MI (US);
Assignee:
E. I. Du Pont de Nemours & Co., Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524589 ; 524871 ; 528 45 ;
Abstract
A pigment dispersant that is useful in a cathodic electrocoating composition is prepared by bringing into contact compound (i), an alkylene carbonate, with a compound (ii) of the structure: ##STR1## where R is and alkyl group having 8-24 carbon atoms, and bringing the resulting reaction product of (i) and (ii) into contact with a half blocked organic diisocyanate; this pigment dispersant has an advantage of allowing for the maximization of pigment to binder ratios and the minimization of volatile organic content (VOC) in electrocoating compositions.