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:
Dec. 07, 2010
Filed:
Jun. 13, 2006
Hideo Kubo, Ichihara, JP;
Hitoshi Matsumoto, Chiba, JP;
Takeshi Shimotori, Ichihara, JP;
Tooru Kawabe, Ichihara, JP;
Hideo Kubo, Ichihara, JP;
Hitoshi Matsumoto, Chiba, JP;
Takeshi Shimotori, Ichihara, JP;
Tooru Kawabe, Ichihara, JP;
Nippon Soda Co., Ltd., Tokyo, JP;
Abstract
Disclosed are an acrylic acid-based polymer which is a star polymer containing a repeating unit derived from an (α-lower alkyl)acrylic ester represented by formula (I): (wherein Rrepresents a hydrogen atom or a lower alkyl group, and Rrepresents an organic group having a polar group) in an arm portion; an acrylic acid-based polymer containing a repeating unit derived from an poly(α-lower alkyl)acrylic ester and a repeating unit derived from an (α-lower alkyl)acrylic ester represented by formula (I), and a method for producing a polymer through living polymerization, comprising forming an oligomer having a polymerization active end, which is an oligomer higher than an average 1.0-mer and lower than an average 4.0-mer or an average 4.0-mer, and polymerizing using the oligomer having a polymerization active end as an initiating species.