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:
Aug. 11, 2015
Filed:
May. 21, 2012
Applicants:
Makoto Kanou, Yokohama, JP;
Norifumi Hagiya, Yokohama, JP;
Inventors:
Makoto Kanou, Yokohama, JP;
Norifumi Hagiya, Yokohama, JP;
Assignee:
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C12P 13/02 (2006.01); C07C 231/06 (2006.01); C07C 231/22 (2006.01);
U.S. Cl.
CPC ...
C07C 231/06 (2013.01); C07C 231/22 (2013.01); C12P 13/02 (2013.01);
Abstract
There is provided a method for producing an aqueous acrylamide solution by producing acrylamide by reacting a composition including acrylonitrile with water, in which the composition including acrylonitrile includes 20 to 80 mg of methacrylonitrile per 1 kg of the total weight of the composition including acrylonitrile. According to the present invention, a production method allowing stable obtainment of an aqueous acrylamide solution can be provided as polymerization of the acrylamide can be suppressed without causing a decreas+455e in quality.