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:
Feb. 23, 1993
Filed:
Jan. 29, 1991
Applicant:
Inventors:
Mark A Carver, Stockton-on-Tees, GB;
John Hinton, Middlesbrough, GB;
Assignee:
Imperial Chemical Industries PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ; C12N / ; C12S / ;
U.S. Cl.
CPC ...
435146 ; 435228 ; 435262 ;
Abstract
A process for the decomposition of acrylamide using an amidase (acrylamide amido hydrolyase) enzyme in which the enzyme has been heated to a temperature in the range 40.degree. to 80.degree. to induce increased activity of the enzyme. A method for preparing the enzyme and a process for producing acrylic acid are also claimed. The process for the decomposition of acrylamide is useful in particular for reducing the level of unreacted monomer associated with homo- and hetero-polymers of acrylamide. A temperature in the range 50.degree. to 62.degree. is particularly preferred for heating.