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:
May. 24, 2005
Filed:
Jan. 07, 2000
Stefan Dreher, Neustadt, DE;
Bernd Reck, Grünstadt, DE;
Michael Seufert, Bad Dürkheim, DE;
Christian Pfaff, Neustadt, DE;
Stefan Dreher, Neustadt, DE;
Bernd Reck, Grünstadt, DE;
Michael Seufert, Bad Dürkheim, DE;
Christian Pfaff, Neustadt, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A description is given of a polymer dispersion comprising i) polymer particles dispersed in an aqueous medium and composed of units of ethylenically unsaturated monomers, ii) a water-soluble polymeric polyelectrolyte which along a polymeric backbone carries a large number of ionic groups of uniform charge character or groups which can be ionized to such groups, and iii) an ionic surfactant which carries an ionic group having a charge character opposite to that of the polymeric polyelectrolyte, or a group which can be ionized to such a group. The polymer dispersion can be coagulated by simple dilution with water.