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:
Jan. 16, 2001
Filed:
Jan. 26, 1998
Applicant:
Inventors:
Denis Tembou Nzudie, Beaumont-le-Roger, FR;
Didier Vanhoye, Bernay, FR;
Assignee:
Elf Atochem S.A., Puteaux, FR;
Primary Examiner:
Int. Cl.
CPC ...
B01D 1/705 ; C02F 5/12 ; C08F 2/20 ; C08F 2/24 ;
U.S. Cl.
CPC ...
B01D 1/705 ; C02F 5/12 ; C08F 2/20 ; C08F 2/24 ;
Abstract
Concentrated and low viscosity aqueous dispersions, e.g., opaque emulsions, well suited as flocculants for water treatment, comprise the water-soluble polymerizate of at least one water-soluble hydrophilic monomer A, optionally, at least one amphiphilic comonomer B and/or, also optionally, at least one hydrophobic comonomer C, in the presence of at least one polymeric dispersant incompatible therewith, for example an imidized and salified styrene/maleic anhydride copolymer or poly(diallyldimethylammonium chloride).