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. 06, 1977
Filed:
Jul. 23, 1974
Iko Itoh, Niihama, JA;
Yasuhiko Inoue, Niihama, JA;
Shojiro Ito, Niihama, JA;
Kazumitsu Kawamura, Niihama, JA;
Sumitomo Chemical Company, Limited, Osaka, JA;
Abstract
A thermosettable acrylic resin composition for powder coating comprising a mixture consisting essentially of (A) 100 parts by weight of an acrylic resin having a glass transition temperature of 10.degree. to 75.degree. C. and containing (a) 2 to 28 % by weight of a monomeric component containing epoxy group and (b) 0.1 to 8 % by weight of a monomeric component containing carboxyl or acid anhydride group, the gram equivalent ratio of said carboxyl groups to said epoxy groups contained in said acrylic resin being in the range from 1/2 to 1/20 (provided that the gram equivalent of an acid anhydride group is assumed to be equivalent to 2 gram equivalents of the carboxyl group) and (B) 0.5 to 25 parts by weight of a curing agent capable of crosslinking said acrylic resin (A). On being baked at 150.degree. to 220.degree. C. for 10 to 50 minutes, this composition gives a coating film excellent in strength, adherence, and surface leveling.