US 12,110,406 B1
Active energy ray curable water-based inkjet inks and printheads
Davide Ciampini, Pavone Canavese (IT); and Paolo Boggio, Turin (IT)
Assigned to SICPA HOLDING SA, Prilly (CH)
Appl. No. 18/571,002
Filed by SICPA HOLDING SA, Prilly (CH)
PCT Filed Jun. 15, 2022, PCT No. PCT/EP2022/066301
§ 371(c)(1), (2) Date Dec. 15, 2023,
PCT Pub. No. WO2022/263509, PCT Pub. Date Dec. 22, 2022.
Claims priority of application No. 21179896 (EP), filed on Jun. 16, 2021.
Int. Cl. C09D 11/38 (2014.01); B41J 2/14 (2006.01); B41M 7/00 (2006.01); C09D 11/101 (2014.01); C09D 11/107 (2014.01)
CPC C09D 11/38 (2013.01) [B41J 2/14016 (2013.01); B41M 7/0081 (2013.01); C09D 11/101 (2013.01); C09D 11/107 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An active energy ray radically curable inkjet printing ink comprising:
i) at least 55 wt. % of water
ii) from about 2 wt. % to about 20 wt. % of a radically curable di(meth)acrylate monomer being a polyethylene glycol di(meth)acrylate having 5 or more ethylene oxide groups per molecule;
iii) from about 1 wt. % to about 15 wt. % of a radically curable (meth)acrylate compound being a hydroxyalkyl (meth)acrylate wherein the alkyl group is methyl, ethyl, propyl, butyl or isobutyl;
iv) from about 1 wt. % to about 5 wt. % of a photoinitiator of formula (I):

OG Complex Work Unit Chemistry
wherein X+ is Na+ or Li+,
v) from about 0.1 wt. % to about 2 wt. % of one or more co-initiator selected from the group consisting of N-[3-(dimethylamine)propyl]metacrylamide and/or poly(methylhydrosiloxane);
the weight percentage being based on the total weight of the active energy ray radically curable inkjet printing ink.