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. 26, 1991
Filed:
Feb. 09, 1989
Applicant:
Inventors:
Assignee:
Allied Colloids Ltd., , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02C / ; C02C / ; C08F / ; C08F / ;
U.S. Cl.
CPC ...
524 17 ; 524 21 ; 524827 ; 526199 ; 528492 ; 435228 ; 435262 ;
Abstract
The invention provides a substantially dry particulate composition comprising a polyacrylamide and an amidase. An aqueous composition made by dispersing this into water will then have a satisfactorily low content of residual acrylamide even if the initial polymer was contaminated with monomer. The composition is made by blending dry polyacrylamide particles with the amidase.