Active energy ray-curable inkjet ink composition
AssigneesToyo Ink Sc Holdings Co., Ltd., Toyo Ink Co., Ltd.
InventorsNorio Suzuki, Kazuhiro Jonai, Mayuko Okamoto, Yuji Kameyama, Yohei Konda
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Abstract
An ink composition which is used for active energy ray-curable inkjet printing, has excellent curability or adhesiveness to multiple base materials while having low viscosity, and exhibits excellent non-yellowing properties of the printed matter is provided. The composition comprises a polymerizable monomer (A) and photopolymerization initiators (B), the polymerizable monomer comprising 2-(2-vinyloxyethoxy)ethyl acrylate (A-1), and the photopolymerization initiators comprising oligo(2-hydroxy-2-methyl-1-(4-(1-methylvinyl)phenyl)propanone) (B-1) and other initiator (B-2).
Claims5
An active energy ray-curable inkjet ink composition, comprising:
- a polymerizable monomer;
- and
- at least two photopolymerization initiators,
- wherein:
- the polymerizable monomer comprises 2-(2-vinyloxyethoxy)ethyl acrylate;
- the at least two photopolymerization initiators comprise oligo(2-hydroxy-2-methyl-1-(4-(1-methylvinyl)phenyl)propanone) and 2,4,6-trimethylbenzoyldiphenylphosphine oxide;
- and
- oligo(2-hydroxy-2-methyl-1-(4-(1-methylvinyl)phenyl)propanone) is present in an amount of 20 to 80% by weight relative to a total amount of photopolymerization initiators.
Dependencies are inferred from the claim text.