| 摘要 |
PURPOSE:To obtain a lens high in surface hardness, by hardening in a mold a composition that contains an epoxy (meth)acrylate, an ally compound or allylidene compound, a mercapto compound and a free radical polymerization initiator. CONSTITUTION:A curable composition is prepared from an epoxy (meth)acrylate, which is obtained by the reaction of acrylic acid and/or methacrylic acid with an epoxy resin obtained by the condensation of bisphenol A and/or bisphenol F with epichlorohydrin, a compound containing two or more ally groups or allylidene groups in the molecule, a compound containing two or more mercapto groups in the molecule, and a free radical polymerization initiator. The composition is injected into a mold for a lens and is hardened by heating or irradiating with an ultraviolet ray, and the thus obtained lens is removed. |
