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:
Oct. 19, 1999
Filed:
Mar. 09, 1998
Applicant:
Inventors:
Lien Phan, Mississauga, CA;
Rajeev Farwaha, Brampton, CA;
Assignee:
National Starch and Chemical Investment Holding Corporation, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08L / ;
U.S. Cl.
CPC ...
524460 ; 524457 ; 528373 ; 528388 ; 528391 ; 528398 ;
Abstract
The invention relates to an emulsion polymerization process for preparing a latex binder for use in paint. The process involves reacting a water-soluble or water-dispersible polymerizable surfactant having a terminal allyl amine moiety with at least one ethylenically unsaturated monomer and ionic monomer at a pH from about 2 to about 7. Significantly lower levels of the polymerizable surfactants are required to control the latex particle size and to stabilize the latex particles at high solids content as compared to the amount of conventional anionic surfactants used to stabilize a latex.