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. 11, 1982
Filed:
Sep. 12, 1980
Kansai Paint Co., Ltd., Hyogo, JP;
Abstract
A water-dispersed coating composition comprising (1) a dispersion of a water-dispersible form of an acrylic graft polymer containing carboxyl groups and hydroxyl and/or amide groups in an aqueous medium containing 60 to 90% by weight of water, and (2) an amino resin. The water-dispersible form of this polymer is obtained by neutralizing at least 50% of the carboxyl groups of the polymer with a basic substance. Prior to neutralization, the polymer has an acid value of 15 to 40 and a glass transition temperature of -10.degree. C. to 70.degree. C., and is produced by polymerizing (A) an acrylic copolymer and (B) a mixture of an alpha,beta-ethylenically unsaturated carboxylic acid and another copolymerizable unsaturated monomer. The copolymer (A) and the mixture (B) is selected so that either one of them has hydroxyl and/or amide groups and the difference between the acid value of the copolymer (A) and that of the mixture (B) is from 25 to 200. The present invention also provides a water-dispersed coating composition comprising a dispersion of a water-dispersible form of a self-curable acrylic graft polymer without an amino resin.