Polymerizable composition, ink composition for ink-jet recording, method of ink-jet recording, and printed article

1. A polymerizable composition comprising: a polymer compound containing at least one of a repeating unit represented by the following Formula (1) or a repeating unit represented by the following Formula (2); a polymerization initiator; and a polymerizable compound

2. The polymerizable composition according to claim 1 , wherein the polymer compound is a branched polymer compound comprising: a skeleton structure derived from a multifunctional thiol that is from trifunctional to hexafunctional; and a plurality of polymer chains that include at least one of the repeating unit represented by Formula (1) or the repeating unit represented by Formula (2) and that are connected to the skeleton structure via a sulfide bond.

3. The polymerizable composition according to claim 2 , wherein the multifunctional thiol is a hexafunctional thiol.

4. The polymerizable composition according to claim 2 , wherein the multifunctional thiol is at least one selected from dipentaerythritol hexakis(3-mercaptopropionate), dipentaerythritol hexakis(2-mercaptoacetate), or dipentaerythritol hexakis(2-mercaptopropionate).

5. The polymerizable composition according to claim 2 , wherein the polymer chains of the polymer compound further comprise a repeating unit derived from at least one of 2-phenoxyethyl acrylate, 2-(2-ethoxyethoxy)ethyl acrylate, or isobornyl acrylate.

6. The polymerizable composition according to claim 2 , wherein each of the plurality of polymer chains further comprises a (meth)acrylic repeating unit selected from the group consisting of a repeating unit derived from a (meth)acrylate having a C 1-8 linear hydrocarbon group which may include an oxygen atom, a C 3-8 branched hydrocarbon group which may include an oxygen atom, a C 3-8 alicyclic hydrocarbon group which may include an oxygen atom, or a C 6-8 aromatic hydrocarbon group which may include an oxygen atom; a repeating unit derived from a (meth)acrylate having a C 9-10 alicyclic hydrocarbon group; and a repeating unit derived from (meth)acrylic acid.

7. The polymerizable composition according to claim 1 , wherein a total content of the repeating unit represented by Formula (1) and the repeating unit represented by Formula (2) in the polymer compound is 40 mol % or higher with respect to a total amount of repeating units of the polymer compound.

8. The polymerizable composition according to claim 1 , wherein the weight-average molecular weight of the polymer compound is from 1,000 to 30,000.

9. The polymerizable composition according to claim 1 , wherein the polymerizable compound comprises at least one monofunctional polymerizable compound.

10. The polymerizable composition according to claim 1 , wherein the polymerizable compound comprises at least one of N-vinylcaprolactam, 2-phenoxyethyl acrylate, cyclic trimethylol propane formal acrylate, isobornyl acrylate, tetrahydrofurfuryl acrylate, 2-(2-ethoxyethoxy)ethyl acrylate, 2-(2-vinyloxyethoxy) ethyl acrylate, octyl acrylate, decyl acrylate, tridecyl acrylate, isodecyl acrylate, lauryl acrylate, 3,3,5-trimethylcyclohexyl acrylate, or 4-t-butylcyclohexyl acrylate.

11. The polymerizable composition according to claim 1 , wherein the polymerizable compound comprises at least one multifunctional polymerizable compound.

12. The polymerizable composition according to claim 1 , wherein the polymerization initiator comprises at least one of an α-aminoketone compound or an acylphosphine oxide compound.

13. An ink composition for ink jet recording, comprising the polymerizable composition according to claim 1 .

14. A method of ink jet recording, comprising:

a process of discharging the ink composition for ink jet recording according to claim 13 onto a recording medium using an ink-jet recording apparatus; and

a process of irradiating the discharged ink composition for ink jet recording with an active energy radiation, thereby curing the ink composition for inkjet recording.

15. A printed article recorded by the method of inkjet recording according to claim 14 .