High-refractivity plastic lens resin formed by reacting at least one
polyisocyanate with at least one polythiol
    18.
    发明授权
    High-refractivity plastic lens resin formed by reacting at least one polyisocyanate with at least one polythiol 失效
    通过使至少一种多异氰酸酯与至少一种多硫醇反应而形成的高折射率塑料透镜树脂

    公开(公告)号:US4775733A

    公开(公告)日:1988-10-04

    申请号:US19622

    申请日:1987-02-27

    摘要: Disclosed herein are a high-refractivity plastic lens resin obtained by polymerizing under heat at least one polyisocyanate (I): ##STR1## wherein X means a hydrogen, chlorine or bromine atom or a methyl or ethyl group, Z is a hydrogen atom or a methyl group, a stands for an integer of 1-4, b is an integer of 2-4, and a+b is not greater than 6 (a+b.ltoreq.6), with at least one polythiol (II): ##STR2## wherein R means a methyl, ethyl, chloromethyl or bromomethyl group, m stands for an integer of 0-2 and n is 4-m and/or at least one polythiol (III): ##STR3## wherein X means a hydrogen, chlorine or bromine atom or a methyl or ethyl group, Y denotes an oxygen or sulfur atom, r stands for 0 or 1, s is an integer of 0-2, p is an integer of 2-4, q is an integer of 1-4 and p+q is not greater than 6 (p+q.ltoreq.6), in such amounts that the --NCO/--SH molar ratio falls within 0.5-3.0, as well as a lens made of the above resin.

    摘要翻译: 本文公开了通过在加热下聚合至少一种多异氰酸酯(I)获得的高折射率塑料透镜树脂:其中X表示氢,氯或溴原子或甲基或乙基,Z是氢 原子或甲基,a表示1-4的整数,b表示2-4的整数,a + b不大于6(a + b <6),至少有一个多硫醇( II):其中R表示甲基,乙基,氯甲基或溴甲基,m表示0-2的整数,n表示4-m和/或至少一个多硫醇(III):(III)其中X表示氢,氯或溴原子或甲基或乙基,Y表示氧或硫原子,r表示0或1,s表示0-2的整数,p表示 2-4,q是1-4的整数,p + q不大于6(p + q