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:
Apr. 20, 1976
Filed:
Sep. 07, 1973
Mitsubishi Gas Chemical Co., Ltd., Tokyo, JA;
Abstract
An aqueous dispersion of a polymer having a cationic charge on the surface of the polymer particles is used for treatment of fouled water. Said aqueous dispersion contains quaternary ammonium salt or inorganic or organic acid salt of a copolymer obtained by emulsion polymerization of, in the presence of a cationic surfactant, (a) 0.1 - 8.0% by weight based on total monomers of at least one .alpha.,.beta.-ethylenically unsaturated monomers containing basic nitrogen or at least one .alpha.,.beta.-ethylenically unsaturated monomers containing halogen and other (b) .alpha.,.beta.-ethylenically unsaturated monomers and/or (c) conjugate diene monomers, (b) and (c) being copolymerizable with said monomer (a). Said aqueous cationic dispersion is especially effective for treatment of fouled water containing anionic latexes.