US 12,258,481 B2
Dispersion liquid, ink composition for ink jet recording, and dispersing resin
Koichi Terao, Suwa (JP); Mami Tojino, Shiojiri (JP); Toshihiro Otake, Chino (JP); Hiroshi Ito, Matsumoto (JP); and Koji Horiba, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by Seiko Epson Corporation, Tokyo (JP)
Filed on Nov. 18, 2021, as Appl. No. 17/529,320.
Claims priority of application No. 2020-192340 (JP), filed on Nov. 19, 2020.
Prior Publication US 2022/0154022 A1, May 19, 2022
Int. Cl. C09D 11/32 (2014.01); C09D 11/033 (2014.01); C09D 11/102 (2014.01)
CPC C09D 11/32 (2013.01) [C09D 11/033 (2013.01); C09D 11/102 (2013.01)] 14 Claims
 
1. A dispersion liquid comprising:
water;
a coloring material; and
a dispersing resin which disperses the coloring material, wherein
the dispersing resin has a constituent unit A represented by Formula (1), a constituent unit B represented by Formula (2), and a constituent unit C represented by any of Formulas (3-1) to (3-4),

OG Complex Work Unit Chemistry
where R1 independently represents a divalent organic group having 1 to 20 carbon atoms, and R2 independently represents a sulfo group or a salt thereof,

OG Complex Work Unit Chemistry
where R3 independently represents a polyalkyleneoxy group, and R4 independently represents an alkyl group having 1 to 3 carbon atoms, and

OG Complex Work Unit Chemistry
where R5 independently represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or an alkoxy group having 1 to 12 carbon atoms.