Active energy ray curable water-based inkjet inks and printheads
AssigneeSicpa Holding SA
InventorsDavide Ciampini, Paolo Boggio
Life of this patent
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Abstract
The present application is related to an active energy ray radically curable inkjet printing ink comprising water, a radically curable di(meth)acrylate monomer, a radically curable (meth)acrylate compound, a photoinitiator of formula (I): wherein X+ is Na+ or Li+, preferably Na+, and one or more co-initiator. The application also relates to a printed feature consisting of a cured ink layer, a document comprising said printed feature, a thermal inkjet printhead comprising said ink and a process for printing a feature made of said ink on a substrate.
Claims20
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):
- 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.
Dependencies are inferred from the claim text.