ACTIVE ENERGY RAY-CURABLE INKJET INK COMPOSITION
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United States of America Patent
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Issued Date -
Dec 31, 2020
app pub date -
Feb 27, 2019
filing date -
Feb 28, 2018
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Abstract
An object of the present invention is to provide an active energy ray-curable inkjet ink composition that has a low viscosity such that the composition can be ejected as an inkjet ink, and can exhibit sufficient adhesion to a plastic substrate having low surface free energy. The present invention provides an active energy ray-curable inkjet ink composition comprising a polyester resin (A), wherein the polyester resin (A) contains a structural unit (a-1) derived from a polybasic acid and a structural unit (a-2) derived from a polyhydric alcohol, the structural unit (a-2) derived from a polyhydric alcohol contains 20 mol % or more and 100 mol % or less of a structural unit derived from hydrogenated bisphenol A, and the polyester resin (A) has a number average molecular weight (Mn) of 500 to 4,500 and an acid value of 5 to 300.
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