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. 08, 2020
Filed:
Aug. 18, 2016
Nippon Shokubai Co., Ltd., Osaka, JP;
Shigeru Yamaguchi, Osaka, JP;
Yui Nishida, Osaka, JP;
NIPPON SHOKUBAI CO., LTD., Osaka, JP;
Abstract
Provided are a barium-sulfate scale inhibitor and a barium-sulfate scale inhibitor composition each of which can express a high barium-sulfate scale-inhibiting ability. Also provided is a method of inhibiting a barium-sulfate scale that can express a high barium-sulfate scale-inhibiting ability. The barium-sulfate scale inhibitor of the present invention includes a sulfonic acid group-containing copolymer obtained by polymerizing a monomer composition containing a carboxyl group-containing monomer and a sulfonic acid group-containing monomer, in which when the barium-sulfate scale inhibitor is added at a solid content concentration of 1 wt % to high-salt-concentration water having a metal salt concentration of 10 wt % or more, the sulfonic acid group-containing copolymer is free from precipitating.