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:
Aug. 18, 2020
Filed:
Jan. 16, 2017
Basf SE, Ludwigshafen am Rhein, DE;
Reinhold J. Leyrer, Dannstadt-Schauernheim, DE;
Gledison Fonseca, Ludwigshafen, DE;
Aaron Flores-Figueroa, Ludwigshafen, DE;
Volodymyr Boyko, Ludwigshafen, DE;
Robert Richard Dykstra, Cincinnati, OH (US);
Mark Robert Sivik, Cincinnati, OH (US);
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
Provided herein is a cationic polymer obtainable by polymerization of at least one cationic monomer, at least one crosslinker and optionally further monomers, such as nonionic monomers, associative monomers, and/or chain transfer agents. The cationic polymer has an at least bimodal molecular weight distribution with at least one first peak (P1) and at least one second peak (P2), wherein the first peak has a rather low average sedimentation coefficient of ≤10 Sved and the second peak has a rather high average sedimentation coefficient of ≥10,000 Sved. The water-soluble polymer components of the cationic polymer are ≥25% by weight related to the total amount of cationic polymer. Further provided herein is a process for obtaining such a cationic polymer as well as to an inverse dispersion, a thickener or a deposition aid, including at least one of such cationic polymers.