	US 12,479,961 B2
	Comb polymer having salt groups
Hiroshi Yonehara, Hyogo (JP); Andreas Okkel, Wesel (DE); Benjamin Lindner, Rüdenhausen (DE); Shinji Hino, Osaka (JP); Sabine Stelz, Oberhausen (DE); and Ryo Takabayashi, Hyogo (JP)
Assigned to BYK-Chemie GmbH, Wesel (DE)
Appl. No. 18/281,322
Filed by BYK-Chemie GmbH, Wesel (DE)
PCT Filed Apr. 5, 2022, PCT No. PCT/EP2022/059035 § 371(c)(1), (2) Date Sep. 11, 2023, PCT Pub. No. WO2022/214502, PCT Pub. Date Oct. 13, 2022.
Claims priority of application No. 21167235 (EP), filed on Apr. 7, 2021.
Prior Publication US 2024/0158582 A1, May 16, 2024
Int. Cl. C08G 81/02 (2006.01); C09D 7/45 (2018.01); C09D 7/65 (2018.01); C09D 11/102 (2014.01); C09D 11/326 (2014.01); H01M 4/62 (2006.01)

CPC C08G 81/025 (2013.01) [C09D 7/45 (2018.01); C09D 7/65 (2018.01); C09D 11/102 (2013.01); C09D 11/326 (2013.01); H01M 4/62 (2013.01)]

14 Claims

1. A comb polymer having a polymer backbone, wherein the polymer backbone comprises polymerized units of vinyl aromatic hydrocarbon monomers, and lateral side chains linked to the polymer backbone, wherein the lateral side chains comprise

a) alkyl ether terminated polyalkylene oxide side chains, and

b) tertiary amine-functional side chains including tertiary amine groups at least partly neutralized by an acid having a molecular weight in a range of 100 g/mol to 2000 g/mol, wherein if the acid comprises a polymeric acid, the polymeric acid comprises a polyether segment or a polyester segment, and the molecular weight relates to the number average molecular weight Mn, determined by gel permeation chromatography using polystyrene standards for calibration,

and wherein the lateral side chains a) and b) are distributed in random order.