Process for producing (meth)acrylamide
US8143033B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2007 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Jul 24, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P13/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.