| abstract |
(57) Abstract: A novel polyfunctional (meth) acrylate which is easily cured by irradiation with active energy rays or heated and has an excellent hardness and heat resistance and a low water absorption, and Providing a composition comprising: The oxetane compound represented by the following formula (1) has two or more (meth) acryloyl groups, which is an esterification reaction product of a polyol obtained by thermally cationic polymerization of a oxetane compound and (meth) acrylic acid ( (Meth) acrylates. Embedded image [In the formula (1), R 1 represents a hydrogen atom, an alkyl group, an aryl group or an arylalkyl group. ] |