| abstract |
The thiourethane prepolymer compound obtained by reacting, as A component, a trifunctional polythiol compound having a sulfide bond in a molecule and a polyisocyanate compound with a -SH / -NCO molar ratio in the range of 3.0 to 7.0. 10 to 50% by weight, at least one bifunctional or more (meth) acrylate compound as the B component, 35 to 70% by weight and C component, 5 to 30 compounds capable of radical copolymerization with A component and B component The present invention relates to a composition for optical resins containing by weight%, a method for producing an optical resin by photopolymerization, an optical resin and an optical lens. The composition of the present invention is a novel polymerizable composition for optical resin that can be polymerized at high speed, and the resin obtained by curing the composition of the present invention is high refractive index and high pressure number, and is excellent in transparency and optical uniformity. |