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:
Sep. 19, 1978
Filed:
Aug. 07, 1975
Applicant:
Inventor:
Alfred J Restaino, Wilmington, DE (US);
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08F / ;
U.S. Cl.
CPC ...
260 / ; 20415922 ; 260 / ; 260 / ; 260 / ; 260 / ; 526303 ; 526240 ; 526287 ; 526312 ; 526328 ; 526292 ;
Abstract
Aqueous gels of water-soluble polymers and copolymers of extremely high molecular weight as measured by their intrinsic viscosities are prepared by the irradiation, under controlled conditions of concentration, radiation intensity, and total dose, of aqueous solutions of selected nitrogen-containing vinyl monomers separately, in admixture with each other or in admixture with non-nitrogenous vinyl monomers. The polymers may be recovered from the gels in conventional manner. The polymers and the gels are useful as flocculating and thickening agents in aqueous media.