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:
May. 04, 1976
Filed:
May. 06, 1974
Applicant:
Inventor:
Roger H Jansma, Park Forest, IL (US);
Assignee:
Nalco Chemical Company, Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
260 / ; 2605 / ; 2605 / ;
Abstract
A method of promoting alkaline viscosity stability in polymers formed from a secondary amine, an epihalohydrin and an amount of a crosslinking agent such as a primary amine or ammonia which would cause gelation, comprising reacting said polymer with a tertiary amine; a preferred polymer is formed of epichlorohydrin, dimethylamine and ammonia stabilized with trimethylamine.