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:
Mar. 25, 1980
Filed:
May. 08, 1978
John R Hurlock, Hickory Hills, IL (US);
Edward G Ballweber, Glenwood, IL (US);
Nalco Chemical Company, Oak Brook, IL (US);
Abstract
A method for the stabilization of both water-in-oil emulsions and solutions of poly trimethylamino methylol acrylamide is disclosed. The process consists of adding up to the water-in-oil emulsion or solution containing the polymer from 10-50 mole percent of orthophosphorus acid based on the weight of the polymer. Water-in-oil emulsions of polymer are then stabilized by heating the emulsion for a period of time to obtain a stabilized emulsion of a water-soluble quaternary salt of poly trimethylamino methylol acrylamide. Solutions of poly trimethylamino methylol acrylamide need not be heated and are stabilized by the addition of the orthophosphorus acid and mixing.