	US 12,227,657 B2
	Active energy ray-curable flexographic printing ink composition
Tadashi Hirose, Osaka (JP); and Takashi Asano, Osaka (JP)
Assigned to SAKATA INX CORPORATION, Osaka (JP)
Appl. No. 17/416,135
Filed by SAKATA INX CORPORATION, Osaka (JP)
PCT Filed Dec. 18, 2019, PCT No. PCT/JP2019/049532 § 371(c)(1), (2) Date Jun. 18, 2021, PCT Pub. No. WO2020/130016, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 2018-240284 (JP), filed on Dec. 21, 2018.
Prior Publication US 2022/0056287 A1, Feb. 24, 2022
Int. Cl. C09D 11/101 (2014.01); C09D 11/104 (2014.01); C09D 11/12 (2006.01)

CPC C09D 11/101 (2013.01) [C09D 11/104 (2013.01); C09D 11/12 (2013.01)]

4 Claims

1. An active energy ray-curable flexographic printing ink composition which comprises:

a plant oil-modified polyfunctional polyester oligomer by 20.0 to 70.0% by mass in the ink composition,

an acrylamide derivative by 20.0 to 45.0% by mass in the ink composition, and

a wax of 8.0 μm or smaller in average particle size by 1.0 to 5.0% by mass in the ink composition; and

has a viscosity of 300 to 2,000 mPa·s.