	US 12,258,480 B2
	Aqueous inkjet ink, aqueous inkjet ink set, aqueous inkjet ink printed matter production method, and printed matter
Kazushi Sunaoshi, Tokyo (JP); Masahiro Sugihara, Tokyo (JP); and Yuki Sasaki, Tokyo (JP)
Assigned to artience Co., Ltd., Tokyo (JP); and TOYOCOLOR CO., LTD., Tokyo (JP)
Appl. No. 17/605,159
Filed by artience Co., Ltd., Tokyo (JP); and TOYOCOLOR CO., LTD., Tokyo (JP)
PCT Filed Apr. 21, 2020, PCT No. PCT/JP2020/017174 § 371(c)(1), (2) Date Oct. 20, 2021, PCT Pub. No. WO2020/218287, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 2019-082220 (JP), filed on Apr. 23, 2019.
Prior Publication US 2022/0195223 A1, Jun. 23, 2022
Int. Cl. C09D 11/00 (2014.01); B41M 5/00 (2006.01); C09D 11/033 (2014.01); C09D 11/037 (2014.01); C09D 11/107 (2014.01); C09D 11/38 (2014.01)

CPC C09D 11/107 (2013.01) [B41M 5/0023 (2013.01); C09D 11/033 (2013.01); C09D 11/037 (2013.01); C09D 11/38 (2013.01)]

17 Claims

1. An aqueous inkjet ink comprising a pigment, a binder resin, a water-soluble organic solvent, a surfactant and water, wherein

the binder resin comprises an aqueous resin containing, as structural units, a structure derived from an ethylenically unsaturated monomer containing an acid group and a structure derived from an ethylenically unsaturated monomer containing a hydroxyl group, wherein a hydroxyl value of the aqueous resin is from 1 to 50 mgKOH/g;

the aqueous resin has a weight average molecular weight of 5,000 to 45,000, and a glass transition temperature of 35 to 110° C.;

the water-soluble organic solvent comprises a first water-soluble organic solvent having an SP value of 8.5 to 13 (cal/cm3)1/2, and does not contain a second water-soluble organic solvent having a boiling point at 1 atmosphere of 235° C. or higher; and

the surfactant contains an acetylene-based surfactant.