A liquid polymerizable prepolymer having good storage stability is prepared by addition reaction of a polyene compound having a group
(R₁ = H or CH₃) with a polythiol compound in the presence of a basic catalyst under such a condition that the ratio of the total number of vinyl groups to the total number of thiol groups is at least 2. The liquid polymerizable prepolymer is used alone or in combination with an aliphatic polyfunctional vinyl monomer having a refractive index of at least 1.45 for the manufacture of an optical element.
一种具有良好贮存稳定性的液态可聚合预聚物的制备方法是:在碱性催化剂存在下,使 具有以下基团的聚烯化合物与聚
硫醇化合物发生加成反应
(该液态可聚合预聚物可单独使用,也可与折射率至少为 1.45 的脂肪族多官能团
乙烯基单体结合使用,用于制造光学元件。