US 11,787,955 B2
Aqueous dispersant composition
Andreas Okkel, Wesel (DE); Sabine Stelz, Oberhausen (DE); and Sabrina Stopka, Duisburg (DE)
Assigned to BYK-Chemie GmbH, Wesel (DE)
Appl. No. 17/430,504
Filed by BYK-Chemie GmbH, Wesel (DE)
PCT Filed Feb. 18, 2020, PCT No. PCT/EP2020/054243
§ 371(c)(1), (2) Date Aug. 12, 2021,
PCT Pub. No. WO2020/169605, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 19158819 (EP), filed on Feb. 22, 2019.
Prior Publication US 2022/0135812 A1, May 5, 2022
Int. Cl. C09D 7/45 (2018.01); C09D 7/65 (2018.01); C09D 7/20 (2018.01); C09D 17/00 (2006.01); C09D 133/04 (2006.01)
CPC C09D 7/45 (2018.01) [C09D 7/20 (2018.01); C09D 7/65 (2018.01); C09D 17/001 (2013.01); C09D 133/04 (2013.01)] 12 Claims
 
1. An aqueous composition comprising:
a continuous aqueous phase,
a polymer comprising a polymer backbone including carboxylic acid groups covalently linked to the polymer backbone, dissolved in the continuous aqueous phase, wherein 10 to 100 mol-% of the carboxylic acid groups are neutralized by a base including one or more of ammonia, an amine having 1 to 12 carbon atoms, and mixtures thereof,
a polyalkylene oxide terminated at one end by an aliphatic hydrocarbyl group having 8 to 30 carbon atoms, and
a compound according to formula (I)

OG Complex Work Unit Chemistry
wherein R1 is an aliphatic or aromatic hydrocarbon with 3 to 10 carbon atoms, R2 is H or CH3 and n is 1 or 2,
wherein the polymer, the polyalkylene oxide, and the compound according to formula (I) together have an acid value in the range of 20 to 200 mg KOH/g,
and wherein the polymer has one or more pendant groups (A) connected to the polymer backbone by a covalent link, wherein a pendant group of the one or more pendant groups (A) comprises a polyalkylene oxide segment and a hydrocarbyl segment having 8 to 30 carbon atoms, and wherein the polyalkylene oxide segment is located between the hydrocarbyl segment and the covalent link.