US 12,344,751 B2
Active energy ray-curable inkjet ink composition
Okinori Nakashima, Osaka (JP); Takuya Myose, Osaka (JP); Jun Kawabata, Osaka (JP); and Koki Ogasahara, Osaka (JP)
Assigned to SAKATA INX CORPORATION, Osaka (JP)
Appl. No. 18/550,942
Filed by SAKATA INX CORPORATION, Osaka (JP)
PCT Filed Dec. 14, 2021, PCT No. PCT/JP2021/045923
§ 371(c)(1), (2) Date Sep. 15, 2023,
PCT Pub. No. WO2022/201664, PCT Pub. Date Sep. 29, 2022.
Claims priority of application No. 2021-052267 (JP), filed on Mar. 25, 2021.
Prior Publication US 2024/0141192 A1, May 2, 2024
Int. Cl. C09D 11/322 (2014.01); C09D 11/101 (2014.01)
CPC C09D 11/322 (2013.01) [C09D 11/101 (2013.01)] 8 Claims
 
1. An active energy ray-curable inkjet ink composition comprising a pigment, a pigment dispersant, and a photopolymerizable compound, wherein the pigment contains Pigment Violet 19 and Pigment orange 71, and Pigment Violet 19 is 30.0 to 85.0% by mass relative to a total mass of Pigment Violet 19 and Pigment Orange 71, and the photopolymerizable compound satisfies all of the following requirements (A) to (F):
(A) a multifunctional amine-modified oligomer is contained by 0.20 to 15.0% by mass in a total amount of all polymerizable components;
(B) a monofunctional monomer is contained by 50.0% by mass or more in the total amount of all polymerizable components;
(C) a monofunctional monomer whose glass transition temperature is 20° C. or more is contained by 35.0% by mass or more in the total amount of all polymerizable components;
(D) a monofunctional monomer whose glass transition temperature is 10° C. or less is contained by 35.0% by mass or more in the total amount of all polymerizable components;
(E) a multifunctional monomer whose glass transition temperature is 10° C. or less is contained by 2.0 to 11.0% by mass in the total amount of all polymerizable components; and
(F) a nitrogen-containing monofunctional monomer is contained by 10.0 to 25.0% by mass in the total amount of all polymerizable components.