Active energy ray-curable inkjet ink, and printed matter
View Patent ↗Provided is an active energy ray-curable inkjet ink containing: C. I. Pigment Yellow 150; an active energy ray-polymerizable compound (A-1) including multiple ethylene oxide groups and a specific structure; an acylphosphine oxide initiator (B-1); and a siloxane surfactant (C-1) having a weight-average molecular weight of 400 to 20,000, wherein a total amount of a compound represented by general formula 2 below is 100 ppm or less. In general formula 2, R 2 and R 3 each independently represent an amino group or a hydroxyl group. General formula 2:
1 . An active energy ray-curable inkjet ink comprising: C. I. Pigment Yellow 150; an active energy ray-polymerizable compound (A); a photopolymerization initiator (B); and a surfactant (C), wherein
the active energy ray-polymerizable compound (A) contains a compound (A-1) represented by general formula 1,
the photopolymerization initiator (B) contains an acylphosphine oxide initiator (B-1),
the surfactant (C) contains a siloxane surfactant (C-1) having a weight-average molecular weight of 400 to 20,000,
the active energy ray-curable inkjet ink contains or does not contain a monofunctional monomer, and when the active energy ray-curable inkjet ink contains the monofunctional monomer, a total amount of 85% by mass or less relative to a total amount of the compound (A-1), and
a total amount of a compound represented by general formula 2 below contained in the active energy ray-curable inkjet ink is 100 ppm or less,
CH 2 ═CH—CO—(O—CH 2 CH 2 ) n —O—R 1 General formula 1
wherein, R 1 represents an acryloyl group or a vinyl group, and n represents an integer of 2 to 10,
General formula 2:
wherein, R 2 and R 3 each independently represent an amino group or a hydroxyl group.
2 . The active energy ray-curable inkjet ink according to claim 1 , wherein the active energy ray-polymerizable compound (A) further contains a compound (A-2) selected from the group consisting of polypropylene glycol di(meth)acrylate and alkanediol di(meth)acrylate.
3 . The active energy ray-curable inkjet ink according to claim 1 , wherein an amount of the compound (A-1) represented by general formula 1 is 10 to 90% by mass of a total amount of the active energy ray-curable inkjet ink.
4 . The active energy ray-curable inkjet ink according to claim 2 , wherein an amount of the compound (A-1) represented by general formula 1 is 10 to 90% by mass of a total amount of the active energy ray-curable inkjet ink.
5 . A printed matter obtained using the active energy ray-curable inkjet ink according to claim 1 .