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. 29, 1994
Filed:
Jul. 30, 1992
Michael N O'Connor, Norwalk, CT (US);
Lesley J Barker, Shelton, CT (US);
Roderick G Ryles, Milford, CT (US);
American Cyanamid Company, Stamford, CT (US);
Abstract
A stable, water-in-oil emulsion comprising an aqueous phase containing a water soluble polymer and an oil phase containing a partially esterified lower N,N-dialkanol fatty amine emulsifier, the ratio of the aqueous phase to the oil phase ranging from about a 2:1 to about 3:5:1 and the polymer content of the emulsion being at least 20%, by weight based on the total weight of the emulsion, wherein said oil phase also contains a second emulsifier comprising a nonionic, reaction product of ethylene oxide and a long chain compound containing a reactive hydroxyl and/or carboxyl group and having an HLB above 5 but less than 14, the total weight of the emulsifiers comprises about 1-5% of the emulsion, and the second emulsifier constitutes from about 10 to 150% of the weight of the fatty amide and contains less than 0.1 weight percent of sorbitan, sorbitol, mixture thereof and derivatives thereof.