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:
Nov. 17, 2020
Filed:
May. 31, 2016
Applicant:
Clariant International Ltd., Muttenz, CH;
Inventors:
Dirk Fischer, Hahnheim, DE;
Christoph Kayser, Mainz, DE;
Claudia Diemel, Gelnhausen, DE;
Katharina Berz, Seligenstadt, DE;
Assignee:
Clariant International Ltd., Muttenz, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/508 (2006.01); C04B 24/24 (2006.01); C04B 28/02 (2006.01); C08F 220/56 (2006.01); C08F 220/58 (2006.01); C09K 8/487 (2006.01); C09K 8/035 (2006.01); C04B 24/16 (2006.01); C08L 33/26 (2006.01); C09K 8/24 (2006.01);
U.S. Cl.
CPC ...
C09K 8/5083 (2013.01); C04B 24/163 (2013.01); C04B 24/243 (2013.01); C04B 28/02 (2013.01); C08F 220/56 (2013.01); C08F 220/58 (2013.01); C08L 33/26 (2013.01); C09K 8/035 (2013.01); C09K 8/487 (2013.01); C08F 220/585 (2020.02); C09K 8/24 (2013.01);
Abstract
The invention relates to a method for producing water-soluble or water-swellable polymers containing acryloyldimethyltaurate, neutral monomers, and monomers with carboxylate groups. The monomers undergo free radical polymerisation in precipitation in a polar solvent or solvent mixture, providing that an additional polar organic solvent is contained if the polar solvent contains 2-methyl-2-propanol, a ketone or both.