Photocurable ink composition, ink jet recording method, and recording matter
A photocurable ink composition includes a dendritic polymer, a monomer expressed by CH 2 ═CR 1 —COO—R 2 —O—CH═CH—R 3 (R 1 denotes a hydrogen atom or a methyl group, R 2 denotes an organic residue having a carbon number of 2 to 20, and R 3 denotes a hydrogen atom or an organic residue having a carbon number of 1 to 11), and a photo-polymerization initiator.
1. A photocurable ink composition comprising
a dendritic polymer;
a monomer expressed by CH 2 ═CR 1 —COO—R 2 —O—CH═CH—R 3
wherein R 1 denotes a hydrogen atom or a methyl group, R 2 denotes an organic residue having 2 to 20 carbon atoms, and R 3 denotes a hydrogen atom or an organic residue having 1 to 11 carbon atoms; and
a photo-polymerization initiator.
2. The photocurable ink composition according to claim 1 , wherein the dendritic polymer is a dendrimer and/or a hyperbranched polymer.
3. The photocurable ink composition according to claim 1 , wherein the monomer is 2-(vinyloxyethoxy) ethyl acrylate and/or 2-(vinyloxyethoxy)ethyl methacrylate.
4. The photocurable ink composition according to claim 1 , wherein the concentration of the dendritic polymer is in a range from 3% by weight to 30% by weight.
5. The photocurable ink composition according to claim 1 , further comprising a coloring material.
6. The photocurable ink composition according to claim 1 , wherein the photopolymerization initiator is obtained by mixing any one kind or two or more kinds of α-aminoketone, α-hydroxyketone, and acylphosphine oxide.
7. An ink jet recording method comprising: discharging the photocurable ink composition according to claim 1 and irradiating said photocurable ink composition.
8. A recorded material made by the process of recording with the photo-curable ink composition according to claim 1 .