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:
Jul. 14, 2015
Filed:
Mar. 26, 2009
Chikara Kawamura, Kanagawa, JP;
Hiroaki Tanaka, Kanagawa, JP;
Hiroyuki Wakamatsu, Kanagawa, JP;
Yuuichi Inada, Kanagawa, JP;
Chikara Kawamura, Kanagawa, JP;
Hiroaki Tanaka, Kanagawa, JP;
Hiroyuki Wakamatsu, Kanagawa, JP;
Yuuichi Inada, Kanagawa, JP;
KANSAI PAINT CO., LTD., Hyogo, JP;
Abstract
It is an object of the present invention to provide an aqueous dispersion of acrylic modified starch with excellent long-term storage stability, as well as an aqueous coating composition that can form a coated film with excellent finished appearance, curability and weather resistance, obtained using the dispersion. The aqueous dispersion of the present invention is obtained by separate graft polymerization of a radical polymerizable unsaturated monomer mixture for formation of a hydrophobic polymer and a radical polymerizable unsaturated monomer mixture for formation of a hydrophilic polymer, in the presence of starch and/or modified starch, and neutralizing the carboxyl groups in the acrylic modified starch with a basic substance if necessary.