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. 02, 1977
Filed:
Apr. 04, 1975
Applicant:
Inventor:
Frans Maurice Defoor, Strombeek-Bever, BE;
Assignee:
Labofina S.A., Brussels, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260 / ;
Abstract
Disclosed is a process for preparing an aqueous solution of an acrylamide polymer having an average molecular weight of from about 800,000 to 2,000,000 and having a viscosity between about 2,000 and 8,000 centipoise (at 25.degree. C), comprising the steps of first initiating the polymerization of an aqueous solution of acrylamide-based monomer in the presence of a free-radical catalyst and an amine reducing agent and then adjusting the pH of the solution to a value between about 3 and 6.
Defoor, Frans. (1977). Process for preparing aqueous solutions of acrylamide polymers (U.S. Patent No. 4039498). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4039498
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile