	US 12,110,399 B2
	Photocurable inkjet printing ink composition
Okinori Nakashima, Osaka (JP); Takuya Myose, Osaka (JP); Kazuhiro Fuke, Osaka (JP); and Ryoichi Nitta, Osaka (JP)
Assigned to SAKATA INX CORPORATION, Osaka (JP)
Appl. No. 17/042,051
Filed by SAKATA INX CORPORATION, Osaka (JP)
PCT Filed Mar. 19, 2019, PCT No. PCT/JP2019/011386 § 371(c)(1), (2) Date Sep. 25, 2020, PCT Pub. No. WO2019/188569, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 2018-064141 (JP), filed on Mar. 29, 2018.
Prior Publication US 2021/0024762 A1, Jan. 28, 2021
Int. Cl. C09D 11/101 (2014.01); C08F 2/50 (2006.01); C08F 226/06 (2006.01); C08F 236/20 (2006.01); C08F 236/22 (2006.01); C09D 11/106 (2014.01); C09D 11/322 (2014.01); C09D 11/38 (2014.01)

CPC C09D 11/101 (2013.01) [C08F 2/50 (2013.01); C08F 226/06 (2013.01); C08F 236/20 (2013.01); C08F 236/22 (2013.01); C09D 11/106 (2013.01); C09D 11/322 (2013.01); C09D 11/38 (2013.01)]

6 Claims

1. A photocurable inkjet printing ink composition containing photopolymerizable compounds and a photopolymerization initiator, the photocurable inkjet printing ink composition satisfying A to D:

A. 2-(allyloxy methyl) methyl acrylate is contained by 5 to 40 percent by mass in all photopolymerizable compounds;

B. multifunctional monomers and/or multifunctional oligomers of 0° C. or lower in glass transition temperature are contained by 5 to 20 percent by mass in all photopolymerizable compounds;

C. amino group and/or amide group-containing monomers and oligomers are contained, wherein a combination of (i) an acrylated amine compound having two photopolymerizable functional groups and two amino groups in its molecule and (ii) acryloyl morpholine and/or N-vinyl caprolactam is used; and

D. the ink composition has a viscosity of 30 mPa·s or lower at 25° C.,

wherein the amino group and/or amide group-containing monomers and oligomers are contained by 5 to 45 percent by mass in all photopolymerizable compounds.