Actinic ray curable inkjet ink composition for 3D printing, three-dimensional modeling method, and actinic ray curable inkjet ink set for 3D printing

摘要

An actinic ray-curable-type inkjet ink composition for 3D printing includes an acrylate monomer A capable of forming a homopolymer having a glass transition temperature of from 25°C to 120°C; an acrylate monomer B capable of forming a homopolymer having a glass transition temperature of -60° or higher and lower than 25°C; a bifunctional acrylate oligomer C having a weight-average molecular weight of from 2,000 to 20,000; and an acylphosphine oxide compound, in which the mass content of bifunctional or higher-functional acrylate compounds is 15% by mass or less.