| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inkjet ink composition which is excellent in discharge stability such as curability by ultraviolet irradiation in the presence of water or solvent, discharge stability such as dot omission or flying curve, and storage stability of ink. <P>SOLUTION: The inkjet ink composition includes: a pigment; a water-soluble organic solvent; a surfactant; at least one of urethane (meth)acrylate having a weight-average molecular weight of 1,000-10,000, which is represented by general formula (1) and cross-linked urethane (meth)acrylate having a constituent unit including the urethane (meth)acrylate; a compound having a radical polymerizable group; a radical photopolymerization initiator; and water. A<SP POS="POST">1</SP>-O-(CONH-B<SP POS="POST">1</SP>-NHCOO-C<SP POS="POST">1</SP>-O)<SB POS="POST">n</SB>-CONH-B<SP POS="POST">1</SP>-NH-COO-D<SP POS="POST">1</SP>...(1), wherein n represents natural number of 1-30, A<SP POS="POST">1</SP>represents residue of hydroxyl-containing (meth)acrylate, B<SP POS="POST">1</SP>represents residue of diisocyanate, C<SP POS="POST">1</SP>represents residue of diol of acyclic hydrocarbon or cyclic hydrocarbon, and D<SP POS="POST">1</SP>represents residue of polyoxyalkylene glycol monoalkyl ether. <P>COPYRIGHT: (C)2012,JPO&INPIT |
