Resin Composition Having High Heat Resistance and Good Reactivity for Urethane Optical Lens

The present invention relates to a resin composition for plastic optical lenses, in particular, to a heat resistance is also reactive nopeumyeonseo a good urethane resin composition for optical lenses. A resin composition for an optical lens of the present invention is characterized by using the mercapto compound and the isophorone diisocyanate or dicyclohexylmethane diisocyanate to a suitably adjust the -SH / -NCO molar ratio, pre-addition reaction obtained optical resin prepolymer It shall be. The use of isophorone diisocyanate or dicyclohexylmethane diisocyanate used is to increase the heat resistance of an optical lens, an optical resin prepolymer relative to the total weight of the resin composition for optical lenses 20 to 70% by weight is reactive depression and resulting high temperature reacting the dissolution of the adhesive tape in the pressure-sensitive adhesive at solves the bubbling problem due to the edge of the lens occurs leakage of the liquid composition according to the increase of the problem and the reaction temperature to cause bleaching of the lens edge.