| abstract |
An ultraviolet LED (UVLED) can be used as a curing light source, and there is no serious safety problem in terms of skin sensitivity and reproductive toxicity. Provided are a photopolymerizable ink, a photopolymerizable inkjet ink, and an ink cartridge containing the inkjet ink. (1) A thioxanthone compound, 1-hydroxycyclohexyl phenyl ketone, and 2-ethylhexyl p-dimethylaminobenzoate, wherein the blending ratio of p-dimethylaminobenzoic acid-2-ethylhexyl is 23% by weight or more. Photopolymerization initiator composition. (2) A photopolymerizable ink containing the photopolymerization initiator composition. (3) An ink cartridge containing the photopolymerizable ink. [Selection figure] None |