| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ink composition that is excellent in curability, blocking resistance and molding properties and hardly suffers from color changes before and after molding processing. <P>SOLUTION: The ink composition comprises a polymerizable monomer, a radical polymerization initiator and a sensitizer represented by formula (C-1), where at least 65 wt.% of the polymerizable monomer is a monomer selected from the group consisting of monofunctional (meth)acrylates, monofunctional vinyl oxy compounds, monofunctional N-vinyl compounds and monofunctional (meth)acrylamides. In the formula, X is O, S or NR; R is a hydrogen atom, an alkyl group or an acyl group; n is 0 or 1; R<SP>1</SP>to R<SP>8</SP>are each a hydrogen atom or a monovalent substituting group; adjacent two among R<SP>1</SP>-R<SP>4</SP>may be linked together to form a ring; and R<SP>5</SP>or R<SP>6</SP>and R<SP>7</SP>or R<SP>8</SP>may be linked to form a ring. <P>COPYRIGHT: (C)2010,JPO&INPIT |
