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:
Mar. 27, 2012
Filed:
Apr. 03, 2007
Takeya Abe, Takaishi, JP;
Takeshi Fukuda, Takaishi, JP;
Takeya Abe, Takaishi, JP;
Takeshi Fukuda, Takaishi, JP;
Mitsui Chemicals, Inc., Minato-Ku, Tokyo, JP;
Abstract
A process for producing (meth)acrylamide using a microbial catalyst, wherein production steps can be simplified and production cost can be reduced. The process for producing (meth)acrylamide of the present involves (a) a step of allowing (meth)acrylonitrile to undergo hydration reaction by the use of a microbial catalyst containing nitrile hydratase in an aqueous medium to obtain a (meth)acrylamide reaction solution (I) and (b) a step of removing impurities from the reaction solution (I) to obtain a (meth)acrylamide aqueous solution (II), wherein the concentration of (meth)acrylamide in the reaction solution (I) obtained in the step (a) is higher than the concentration of (meth)acrylamide in the aqueous solution (II) obtained in the step (b) by 2 to 20% by weight.