	US 12,378,429 B2
	Ink composition for photocurable inkjet printing
Yoshiyuki Aoki, Osaka (JP); Ryoichi Nitta, Osaka (JP); Koki Ogasahara, Osaka (JP); and Okinori Nakashima, Osaka (JP)
Assigned to SAKATA INX CORPORATION, Osaka (JP)
Appl. No. 18/032,552
Filed by SAKATA INX CORPORATION, Osaka (JP)
PCT Filed Jul. 6, 2021, PCT No. PCT/JP2021/025449 § 371(c)(1), (2) Date Apr. 18, 2023, PCT Pub. No. WO2022/085246, PCT Pub. Date Apr. 28, 2022.
Claims priority of application No. 2020-178252 (JP), filed on Oct. 23, 2020.
Prior Publication US 2023/0383134 A1, Nov. 30, 2023
Int. Cl. C09D 11/38 (2014.01); C09D 11/101 (2014.01); C09D 11/322 (2014.01)

CPC C09D 11/38 (2013.01) [C09D 11/101 (2013.01); C09D 11/322 (2013.01)]

2 Claims

1. An ink composition for photo-curable inkjet printing, comprising a pigment, a photopolymerizable compound, and a photopolymerization initiator,

wherein the photopolymerizable compound comprises 5 to 30% by mass of an amine-modified oligomer and 5 to 30% by mass of N,N-dimethylacrylamide,

wherein the photopolymerization initiator comprises at least any one of ethoxy(2,4,6-trimethylbenzoyl)phenylphosphine oxide and bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide, and

wherein a total amount of ethoxy(2,4,6-trimethylbenzoyl)phenylphosphine oxide and bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide is 12% by mass or less.