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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.:

US 11214641 B1

PDFFull Text
Date of Patent:
Jan. 04, 2022

Filed:

Sep. 29, 2017

Thickening anionic copolymer

Applicant:

Coatex, Genay, FR;

Inventors:

Yves Matter, Quincieux, FR;

Jean-Marc Suau, Lucenay, FR;

Francis Bony, Quincieux, FR;

Francois Dupont, Lyons, FR;

Assignee:

COATEX, Genay, FR;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Wenwen Cai

Int. Cl.
CPC ...
C08F 220/28 (2006.01); C08F 216/14 (2006.01); C08K 5/42 (2006.01); C08F 265/04 (2006.01); C08F 2/22 (2006.01); C08K 3/013 (2018.01); C08K 3/22 (2006.01); D21H 19/60 (2006.01); C09D 1/12 (2006.01); C09D 7/44 (2018.01); C09D 5/04 (2006.01); C09D 7/43 (2018.01); D21H 19/20 (2006.01); D21H 19/82 (2006.01); D21H 19/58 (2006.01); D21H 19/56 (2006.01); C08K 3/26 (2006.01); C08K 3/34 (2006.01); C08L 33/04 (2006.01);
U.S. Cl.
CPC ...
C08F 220/28 (2013.01); C08F 2/22 (2013.01); C08F 216/1416 (2013.01); C08F 265/04 (2013.01); C08K 3/013 (2018.01); C08K 3/22 (2013.01); C08K 3/26 (2013.01); C08K 3/346 (2013.01); C08K 5/42 (2013.01); C09D 1/12 (2013.01); C09D 5/04 (2013.01); C09D 7/43 (2018.01); C09D 7/44 (2018.01); D21H 19/20 (2013.01); D21H 19/56 (2013.01); D21H 19/58 (2013.01); D21H 19/60 (2013.01); D21H 19/82 (2013.01); C08F 2800/20 (2013.01); C08K 2003/2241 (2013.01); C08K 2003/265 (2013.01); C08L 33/04 (2013.01);
Abstract

The invention relates to a copolymer obtained by polymerisation reaction of at least three comonomers: a first anionic monomer, a second monomer comprising an olefin unsaturation, and a third monomer comprising a hydrophobic group. The invention likewise relates to the use of said copolymer as a thickening agent, in particular in aqueous suspensions of mineral particles with high solids content. The copolymer according to the invention makes it possible to improve the compromise between viscosity with high shear gradient and viscosity with low shear gradient, while also improving water retention inside the suspension.

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