| 摘要 |
The object of the present invention is to provide an ink composition that is excellent in terms of adhesion to a recording medium, for which there is little leaching out (migration) of a component in the cured ink film, and that gives a printed material with suppressed odor, and an inkjet recording method and a printed material employing the ink composition, and also to provide a novel acylphosphine oxide compound. The ink composition of the present invention contains an acylphosphine oxide compound having an acyl group comprising a polymerizable functional group, and a polymerizable compound. |
| 主权项 |
1. An ink composition comprising
an acylphosphine oxide compound having an acyl group comprising a polymerizable functional group, and a polymerizable compound, wherein the acylphosphine oxide compound is an acylphosphine oxide compound represented by Formula (1-1) or Formula (2-1) below,wherein in Formula (1-1) and Formula (2-1), R1 to R6 independently denote a hydrogen atom, an alkyl group having 1 to 4 carbons, or a group comprising a polymerizable functional group, at least one of R1 to R6 is a group comprising a polymerizable functional group, R7 denotes an alkyl group or an aryl group, R21 to R23 independently denote a hydrogen atom, an alkyl group having 1 to 4 carbons, an alkoxy group having 1 to 4 carbons, or a group comprising a polymerizable functional group, at least one of R21 to R23 is a group represented by Formula (2-2) and R24 and R25 independently denote an alkyl group, an aryl group, or an alkoxy group,wherein in Formula (2-2), R26 denotes a hydrogen atom or a methyl group, L21 denotes —COO—, —CONH—, or a phenylene group, X′ denotes a divalent linking group, L22 denotes —COO— or —CONH—, R27 denotes an alkylene group having 1 to 4 carbons, n′ denotes an integer of 0 to 3, and -* denotes a bond to a benzene ring. |
