US 12,116,492 B2
Non-pigmented dispersant composition
Andreas Okkel, Wesel (DE); Hiroshi Yonehara, Hyogo (JP); Benjamin Lindner, Rudenhausen (DE); Jörg Bömer, Wesel (DE); Albert Frank, Xanten (DE); Udo Krappe, Wesel (DE); Ryo Takabayashi, Hyogo (JP); and Yoshizumi Kohara, Osaka (JP)
Assigned to BYK-Chemie GmbH, Wesel (DE)
Appl. No. 17/605,458
Filed by BYK-Chemie GmbH, Wesel (DE)
PCT Filed Apr. 22, 2020, PCT No. PCT/EP2020/061242
§ 371(c)(1), (2) Date Oct. 21, 2021,
PCT Pub. No. WO2020/216800, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 19171337 (EP), filed on Apr. 26, 2019.
Prior Publication US 2022/0213337 A1, Jul. 7, 2022
Int. Cl. C09D 7/45 (2018.01); C09D 7/65 (2018.01); C09D 11/037 (2014.01); C09D 11/107 (2014.01); C09D 11/322 (2014.01); C09D 11/326 (2014.01); C09D 11/328 (2014.01); C09D 17/00 (2006.01); G02B 5/22 (2006.01)
CPC C09D 11/107 (2013.01) [C09D 7/45 (2018.01); C09D 7/65 (2018.01); C09D 11/037 (2013.01); C09D 11/322 (2013.01); C09D 11/326 (2013.01); C09D 11/328 (2013.01); C09D 17/001 (2013.01); G02B 5/223 (2013.01)] 14 Claims
 
1. A non-pigmented composition comprising: a block co-polymer comprising at least one first block and at least one second block which is different from the first block, wherein the first block comprises repeating unit 1,

OG Complex Work Unit Chemistry
and the second block comprises repeating unit 2,

OG Complex Work Unit Chemistry
wherein
Z represents O or NH,
R1 represents H or CH3,
R2 represents a hydrocarbyl group or an ether group-containing group,
R3 represents an organic group having 2 to 4 carbon atoms,
R4 and R5 independently represent an organic group, wherein R4 and R5 are optionally linked to each other to form a cyclic structure, and
a polymer comprising at least one acidic group, and having a number average molecular weight of 300 g/mol or higher,
wherein the repeating unit 2 of the block co-polymer is at least partially present as salt of the polymer comprising the at least one acidic group, and
wherein the composition is essentially free of pigments, dyes, and inorganic filler materials.