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:
Apr. 03, 2012
Filed:
Feb. 20, 2009
Koichi Ikegami, Nantan, JP;
Noboru Kohiyama, Ome, JP;
Teppei Nishikawa, Uji, JP;
Michiya Higuchi, Nantan, JP;
Nobuhito Hamada, Kyotanabe, JP;
Hiroko Daido, Uji, JP;
Chieko Inui, Uji, JP;
Tatsuya Kubo, Kyoto, JP;
Koichi Ikegami, Nantan, JP;
Noboru Kohiyama, Ome, JP;
Teppei Nishikawa, Uji, JP;
Michiya Higuchi, Nantan, JP;
Nobuhito Hamada, Kyotanabe, JP;
Hiroko Daido, Uji, JP;
Chieko Inui, Uji, JP;
Tatsuya Kubo, Kyoto, JP;
Goo Chemical Company, Ltd., Kyoto, JP;
Abstract
A carboxyl resin according to the present invention is obtained by a process including following steps: epoxy groups on a resin (a) having two or more epoxy groups in one molecule is made to react with 0.3-0.85 mol of a monocarboxylic acid (b) per one epoxy-group equivalent weight to obtain a reaction product (c); the epoxy group or groups on the reaction product (c) are made to react with 0.15-0.95 mol of a polybasic acid (d) per one epoxy-group equivalent weight to obtain a reaction product (e); and the epoxy group or groups on the reaction product (e) are further made to react with 1.0-5.0 mol of a monocarboxylic acid (f) per one epoxy-group equivalent weight. The carboxyl resin thus obtained has an acid value within a range from 20 to 200 mgKOH/g and is soluble in an organic solvent.