ACTIVE ENERGY RAY-CURABLE INKJET INK COMPOSITION
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Mar 26, 2015
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Mar 26, 2014
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Abstract
An ink composition used for active energy ray-curable inkjet printing which has excellent curability and abrasion resistance, and which does not easily cause curing wrinkles and has excellent initiator solubility, little odor and low viscosity, is shown. The ink composition contains a pigment, a polymerizable compound and a photopolyrnerization initiator, wherein the polymerizable compound comprises 80 wt % or more of aliphatic ethylenically polymerizable compounds based on a total weight of the polymerizable compound, wherein the aliphatic ethylenically polymerizable compounds comprise polyfunctional (meth)acrylates including at least 2-(2-vinyloxyethoxy)ethyl acrylate and dipropylene glycol diacrylate, the photopolymerization initiator comprises an acyl phosphine oxide, and an amount of the dipropylene glycol diacrylate is 16 wt % or more and an amount of the acyl phosphine oxide is 10 wt % or more with respect to a total weight of the inkjet ink composition.
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