	US 12,071,551 B2
	UV-curable ink composition and a UV-cured printing process
Derek Illsley, Bath (GB); Ajay Popat, Lancashire (GB); Phil Shipham, Lancashire (GB); Samuel Lawton, Lancashire (GB); and Samuel Lyth, Lancashire (GB)
Assigned to Sun Chemical B.V., LV Weesp (NL)
Appl. No. 18/253,099
Filed by SUN CHEMICAL CORPORATION, Parsippany, NJ (US)
PCT Filed Nov. 23, 2021, PCT No. PCT/GB2021/053023 § 371(c)(1), (2) Date May 16, 2023, PCT Pub. No. WO2022/106854, PCT Pub. Date May 27, 2022.
Claims priority of provisional application 63/221,104, filed on Jul. 13, 2021.
Claims priority of provisional application 63/116,969, filed on Nov. 23, 2020.
Prior Publication US 2023/0323143 A1, Oct. 12, 2023
Int. Cl. C09D 11/101 (2014.01); B41J 11/00 (2006.01); B41M 7/00 (2006.01); C09D 11/14 (2006.01)

CPC C09D 11/101 (2013.01) [B41J 11/00214 (2021.01); B41M 7/0081 (2013.01); C09D 11/14 (2013.01)]

20 Claims

1. A process of printing and curing a UV-curable ink composition comprising:

≤20% (w/w) of any blend of monofunctional acrylate monomers;

an acrylated amine; and

≤5% (w/w) of any blend of photoinitiators;

wherein the composition does not include any mercaptans and thio-ether synergists;

the process comprising applying the composition onto a substrate and curing; wherein the ink composition is applied by flexographic printing; wherein the cure is accomplished by exposure to two or more separate UV irradiations from UV-LED lamps; and wherein the inks are printed with a press speed of 100 m/min or greater.