US 2026/0250528 A1Published application

Actinic-ray-curable ink composition

AssigneeSakata Inx Corporation

InventorsKeishiro HISHINUMA, Naoki OMI, Kohei SHIMOYAMA, Aoi ITO

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Abstract

To provide an actinic-ray-curable ink composition having favorable fluidity and capable of imparting favorable dry-down and scratch resistance to a printed matter obtained by the use thereof while reducing the use of photopolymerization initiators by using monomers and oligomers that can be polymerized even without using a photopolymerization initiator and even while reducing the use of diallyl phthalate resin from an environmental perspective. The above-described problem is solved by an actinic-ray-curable ink composition comprising a component that is at least one polymer or resin selected from a polymer of allyl monomers, a rosin-modified resin, and a terpene monomer skeleton-containing resin, and a component that is a monomer and/or an oligomer having an amine functional group and/or both a monomer and/or an oligomer not having an amine functional group but having an aryl ketone skeleton or an alkyl aryl ketone skeleton, and a polyether acrylate having an amine functional group.

Claims6

Dependent claims

An actinic-ray-curable ink composition comprising:

a component (A) that is at least one polymer or resin selected from (A1), (A2), and (A3) below and further includes a pigment dispersant in the case of the (A1) being selected alone from among these choices;
a component (B) composed of (B1) and/or (B2) below;
a compound having an ethylenically unsaturated bond and not being applicable to either the component (A) or the component (B);
and
a pigment,
a content of the component (B) being 15 mass % or greater of a total mass,
(A1) A polymer of allyl monomers represented by general formula (1) below
(A2) A rosin-modified resin
(A3) A terpene monomer skeleton-containing resin
(B1) A monomer and/or an oligomer having an amine functional group
(B2) Both a monomer and/or an oligomer not having an amine functional group but having an aryl ketone skeleton or an alkyl aryl ketone skeleton, and a polyether acrylate having an amine functional group
(In the above-described general formula (1), R1 and R2 are each independently a hydrogen atom or an alkyl group having 1 to 5 carbons, and X is an n-valent group composed of a 4- to 8-membered ring alicyclic skeleton, n being 2 or 3.)

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/877,423Filed 13 Jun 2023
Priority: JP 2022-10138223 Jun 2022
Published: 27 Aug 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

C09D 11/101
Based on artificial resins: inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with…
C09D 11/037
Characterised by features other than the chemical nature of the binder: characterised by the pigment
C09D 11/104
Containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds: polyesters
C09D 11/106
Based on artificial resins: containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds