发明公开
EP0751161A3 Sulfur-containing urethane-based resin composition, optical element and lens comprising this resin 失效
含硫聚氨酯类树脂组合物,包含该树脂的光学元件和透镜

Sulfur-containing urethane-based resin composition, optical element and lens comprising this resin
摘要:
The present invention discloses a sulfur-containing urethane-based resin composition
   which comprises a polythiol compound represented by formula (1):
   wherein X 1 , X 2 and X 3 each is a hydrogen atom or a mercapto group; x, y and z each is an integer of 0 to 8; and in their combinations, formula (1) has at least two mercapto groups,
a polyiso(thio)cyanate compound, and a compound having two or more reactive unsaturated groups in an amount of 30 to 70% by weight based on the total weight of the composition, or a sulfur-containing urethane-based resin composition which comprises the polythiol compound represented by formula (1), the polyiso(thio)cyanate compound, the compound having two or more reactive unsaturated groups in an amount of 10 to 70% by weight based on the total weight, and a photopolymerization catalyst.
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