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:
Sep. 07, 1999
Filed:
Aug. 09, 1996
Shigeru Yamaguchi, Himeji, JP;
Takashi Fujisawa, Himeji, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Kurita Water Industries, Ltd., Tokyo, JP;
Abstract
An agent for water treatment comprises a water-soluble polymer obtained by polymerizing a monomer component containing a water-soluble monomer capable of dissolving in water of 50.degree. C. in the amount of 1 weight % or more, having an ethylenically unsaturated group, and exhibiting fluorescence. The water-soluble polymer has a ratio of fluorescence intensity FL.sub.1 /FL.sub.2 larger than 1, wherein FL.sub.1 is an intensity of fluorescence obtained in dissolving a water-soluble polymer in a concentration of 10 ppm in pure water, and FL.sub.2 is an intensity of fluorescence obtained in dissolving phenol in a concentration of 0.1 ppm in pure water.