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:
May. 31, 2011
Filed:
Aug. 30, 2006
Hidekazu Kozuki, Tatsuno, JP;
Noboru Sakamoto, Takatsuki, JP;
Takahiro Tsumori, Nishinomiya, JP;
Atsuro Yoneda, Toyonaka, JP;
Kaori Nakatani, Takasago, JP;
Hideo Wakami, Omihachiman, JP;
Hidekazu Kozuki, Tatsuno, JP;
Noboru Sakamoto, Takatsuki, JP;
Takahiro Tsumori, Nishinomiya, JP;
Atsuro Yoneda, Toyonaka, JP;
Kaori Nakatani, Takasago, JP;
Hideo Wakami, Omihachiman, JP;
Nippon Shokubai Co., Ltd., Osaka-Shi, Osaka, JP;
Abstract
To provide a continuous production method for producing a water-soluble polymer with a narrow molecular weight distribution with high efficiency. A continuous production method of a water-soluble polymer, comprising the steps of: circulating a circulation liquid containing a monomer having a polymerizable unsaturated bond through a reaction apparatus: having a tank and a circulation line comprising a piping circulating outside the tank, and thereby producing a water-soluble polymer continuously; and discharging part of the circulation liquid from a discharge line, wherein the circulation line is provided with a cooling device at least at one position.