Urethane (meth)acrylate

Abstract

Provided is a urethane (meth)acrylate that can be cured to form a cured product excellent in stretchability, flexibility, and foldability, as well as shape recoverability when folded. The urethane (meth)acrylate of the present invention is represented by the following formula (1) and has a number average molecular weight (Mn) of 16000 to 60000, a ratio of a weight average molecular weight (Mw) to the (Mn), Mw/Mn, of 1.0 to 1.2, and a urethane group mass content of 0.18 to 0.73 mass % based on a total mass of the urethane (meth)acrylate: R2—NHC(═O)O—R1—OC(═O)NH—R3  (1) wherein R1 is a residual group formed by removing two hydroxy groups from a molecule of a diol selected from the group consisting of a polyether diol, a polyester diol, and a polycarbonate diol; and R2 and R3 are each independently a residual group formed by removing an isocyanate group from a monoisocyanate having one or more (meth)acryloyloxy groups per molecule.

Dependencies are inferred from the claim text.