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. 14, 1978
Filed:
Nov. 03, 1975
Applicant:
Inventor:
Wun T Tai, Palos Hills, IL (US);
Assignee:
Nalco Chemical Company, Oak Brook, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260 / ;
Abstract
A process for preparing cationic acrylamide polymers through the reaction of a formaldehyde-secondary amine adduct with a water-in-oil emulsion of finely divided acrylamide polymer formed by treatment with an oxygen containing halogen free inorganic acid or its alkali metal salts. The resulting products are further characterized in that they can be inverted easily into aqueous solution. Compositions produced by the invention are also disclosed.