| 摘要 |
PROBLEM TO BE SOLVED: To provide an urethane (meth)acrylate compound including a cyano group, which is superior in transparency, and which can offer a suitable curable composition with polarization.SOLUTION: A piezoelectric material is arranged by curing a curable composition including an urethane (meth)acrylate compound including a cyano group, and expressed by the general formula (1) below, and a polymerization initiator.[Formula 1] (In the formula (1), Ris a group selected from a straight-chain divalent aliphatic group with 2-20C, a branched divalent aliphatic group with 2-20C, a cyclic divalent aliphatic group with 3-20C, and a divalent organic group having an aromatic ring with 6-20C; Ris a straight-chain divalent organic group with 1-5C, a branched divalent organic group with 1-5C, or a divalent organic group having an ether structure with 1-5C, Rand Rindependently represent a hydrogen atom or a methyl group; a is 1 or 2.)SELECTED DRAWING: None |
