PROBLEM TO BE SOLVED: To provide photocurable artificial nail compositions that have hardenability with sufficient strength also by making it harden by ultraviolet rays, have low irritation to the skin, and quickly form a coating film and make a coated surface glazed because of having no uncured monomer after cure.SOLUTION: Provided is a photocurable artificial nail composition containing urethane (meth) acrylate oligomer, (meth) acrylic monomer, multi-functional thiol, and photopolymerization initiator, the average acrylic equivalent of the entire of the urethane (meth) acrylate oligomer being 400 to 2000, and the weight average molecular weight of the urethane (meth) acrylate oligomer being 3000 or more.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】光硬化性人工爪組成物において、紫外線により硬化させることによっても十分に強度を備えた硬化性を有し、皮膚への刺激性が低く、かつ、硬化後において未硬化のモノマーを有しないので、被膜の形成を速やかに、且つ艶がある被膜表面とすること。【解決手段】ウレタン(メタ)アクリレートオリゴマー、(メタ)アクリル系モノマー、多官能チオール及び光重合開始剤を含有し、該ウレタン(メタ)アクリレートオリゴマー全体の平均アクリル当量が400~2000であり、かつ重量平均分子量が3000以上のウレタン(メタ)アクリレートオリゴマーを含有する光硬化性人工爪組成物。【選択図】なし
