Photocurable resin composition

摘要

A novel photocurable resin composition. The resin composition capable of providing a cured product having excellent mechanical strength, high dimensional accuracy, and excellent toughness. The resin composition capable of providing a cured product with little change in mechanical strength with time. The resin composition capable of forming by fabricating a three-dimensional object which can be used for a long period of time in a humid atmosphere. The composition comprises, (A) a compound represented by the formula (1) illustrated below, (B) a cationic photo-initiator, (C) an ethylenically unsaturated monomer, (D) a radical photo-initiator, and (E) a polyol; wherein R<1> and R<2>, which may be the same or different, individually represent a hydrogen atom, methyl group, ethyl group, isopropyl group, n-butyl group, sec-butyl group, or tert-butyl group, m is an integer from 1-7, and n is an integer from 1-20, provided that when there are two or more groups of R<1> or R<2> present, a plurality of R<1> or R<2> may be either the same or different.