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:
Nov. 07, 2006
Filed:
Aug. 31, 2005
Atsuro Yoneda, Toyonaka, JP;
Takahiro Tsumori, Suita, JP;
Yoshikazu Fujii, Suita, JP;
Shigeru Yamaguchi, Yao, JP;
Atsuro Yoneda, Toyonaka, JP;
Takahiro Tsumori, Suita, JP;
Yoshikazu Fujii, Suita, JP;
Shigeru Yamaguchi, Yao, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
This invention concerns a (meth)acrylic acid type polymer, wherein the value S representing the quantity of an sulfur element introduced which is defined by the formula, S=(quantity of S contained in polymer)/(total quantity of S)×100, is not less than 35. This (meth) acrylic acid type polymer is a water-soluble polymer of a low molecular weight which has only a small impurity content, entails no precipitation of an impurity during the preservation at a low temperature, and excels in dispersibility, chelating ability, and an anti-gelling property.