Photocurable composition, inkjet ink composition, active energy ray-curable ink composition, cured product, and electronic component
A photocurable composition is capable of forming a cured product that has good reliability in a high-temperature constant-humidity environment, especially good ion migration resistance in a temperature range of 100° C. or higher. The photocurable composition (Z) is obtained by adding an ion scavenger (Y) to a composition (X) containing a monofunctional acrylic monomer (A) and a multifunctional acrylic monomer (B), wherein the content of the monofunctional acrylic monomer (A) relative to 100 wt % of the composition (X) is from 40 wt % to 80 wt %, and the content of the multifunctional acrylic monomer (B) relative to 100 wt % of the composition (X) is from 10 wt % to 50 wt %. An inkjet ink composition contains the photocurable composition (Z); a cured product; and an electronic component.
1 . A photocurable composition (Z), obtained by adding an ion scavenger (Y) to a composition (X) containing a monofunctional acrylic monomer (A) and a multifunctional acrylic monomer (B), wherein
a content of the monofunctional acrylic monomer (A) relative to 100 wt % of the composition (X) is from 40 wt % to 80 wt %,
a content of the multifunctional acrylic monomer (B) relative to 100 wt % of the composition (X) is from 10 wt % to 50 wt %, and
the composition (X) has a hydroxyl value of 1 mgKOH/g to 100 mgKOH/g.
2 . The photocurable composition (Z) according to claim 1 , wherein an addition amount of the ion scavenger (Y) relative to 100 parts by weight of the composition (X) is from 0.1 part by weight to 10 parts by weight.
3 . The photocurable composition (Z) according to claim 1 , wherein the ion scavenger (Y) is inorganic particles.
4 . The photocurable composition (Z) according to claim 1 , wherein the ion scavenger (Y) is inorganic particles that contain any of a zirconium compound, a magnesium compound and an aluminum compound.
5 . The photocurable composition (Z) according to claim 1 , wherein the ion scavenger (Y) is a mixture of a zirconium compound, a magnesium compound and an aluminum compound.
6 . The photocurable composition (Z) according to claim 1 , further comprising: a radical polymerizable compound (C) having a hydroxyl value of 100 mgKOH/g to 300 mgKOH/g in the composition (X).
7 . The photocurable composition (Z) according to claim 6 , wherein the radical polymerizable compound (C) has a weight average molecular weight of 100 to 5000.
8 . The photocurable composition (Z) according to claim 6 , wherein a content of the radical polymerizable compound (C) relative to 100 wt % of the composition (X) is from 0.1 wt % to 30 wt %.
9 . The photocurable composition (Z) according to claim 6 , wherein the radical polymerizable compound (C) has a hydroxyl value of 150 to 200 mgKOH/g.
10 . The photocurable composition (Z) according to claim 6 , wherein the radical polymerizable compound (C) is an acrylic oligomer.
11 . The photocurable composition (Z) according to claim 1 , wherein the monofunctional acrylic monomer (A) comprises a (meth)acrylate having one or a plurality of groups out of the group consisting of a fused-ring hydrocarbon group, a polycyclic hydrocarbon group and a monocyclic hydrocarbon group.
12 . The photocurable composition (Z) according to claim 11 , wherein the monofunctional acrylic monomer (A) is represented by the following formula (1), and
in formula (1), R 1 is hydrogen or methyl, R 2 is a monovalent organic group of 4 to 30 carbon atoms having a fused-ring hydrocarbon group, a polycyclic hydrocarbon group or a monocyclic hydrocarbon group, and n A is an integer of 0 to 10.
13 . The photocurable composition (Z) according to claim 12 , wherein R 2 in formula (1) is a group represented by any one of the following formulae (2) to (5), and
in formulae (2) to (5), each R 3 is independently hydrogen or an alkyl having 1 to 6 carbon atoms, and * is a bonding site.
14 . The photocurable composition (Z) according to claim 1 , wherein the multifunctional acrylic monomer (B) is a difunctional acrylic monomer represented by the following formula (6), and
in formula (6), each R 4 is independently hydrogen or methyl, R 5 is a divalent organic group of 4 to 30 carbon atoms having a fused-ring hydrocarbon group, a polycyclic hydrocarbon group or a monocyclic hydrocarbon group, and each np is independently an integer of 0 to 10.
15 . The photocurable composition (Z) according to claim 14 , wherein R 5 in formula (6) is a group represented by any one of the following formulae (7) to (10), and
in formulae (7) to (10), * is a bonding site.
16 . The photocurable composition (Z) according to claim 1 , further comprising: 5 wt % to 15 wt % of a photopolymerization initiator (D) in 100 wt % of the composition (X).
17 . The photocurable composition (Z) according to claim 1 , of which a viscosity at 25° C. is 1 to 100 mPa·s.
18 . The photocurable composition (Z) according to claim 1 , wherein the composition (X) has a hydroxyl value of 5 mgKOH/g to 40 mgKOH/g.
19 . An inkjet ink composition, comprising the photocurable composition (Z) according to claim 1 .
20 . An active energy ray-curable ink composition, comprising the inkjet ink composition according to claim 19 .
21 . A cured product, obtained by photocuring the photocurable composition (Z) according to claim 1 .
22 . A cured product, obtained by photocuring and then thermocuring the photocurable composition (Z) according to claim 1 .
23 . An electronic component, comprising the cured product according to claim 21 .
24 . An electronic component, comprising the cured product according to claim 22 .