| 摘要 |
<p>Provided is a photocurable ink composition for inkjet printing, said ink composition having excellent curability with respect to light from a light-emitting diode, having good adhesion to a polyvinyl chloride sheet, and being capable of sufficiently inhibiting cockling. The photocurable ink composition for inkjet printing contains, at least, photopolymerizable compounds, a photopolymerization initiator, and a sensitizer. The provided photocurable ink composition is characterized by containing, as photopolymerizable compounds, benzyl acrylate, N-vinylcaprolactam, and an acrylated amine compound having, within the molecules thereof, two photopolymerizable functional groups and two amino groups. The photocurable ink composition for inkjet printing is further characterized in that the benzyl acrylate content is between 20% and 65% of the mass of the photocurable ink composition, the photopolymerization initiator is a compound that acts as an initiator in light having a wavelength between 300 nm and 450 nm, the sensitizer is a compound that acts as a sensitizer in light having a wavelength of at least 400 nm, and the flash point is at least 70°C as measured by a closed-cup flash point tester using a method compliant with JIS K2256.</p> |
