申请人:KUREHA KAGAKU KOGYO KABUSHIKI KAISHA
公开号:EP0162550A2
公开(公告)日:1985-11-27
A lens material having a refractive index n20D of at least 1.57 and an Abbe's number v of at least 30, comprising: a copolymer comprising (I) 10 to 85% by weight of a halogen-containing monomer represented by the following formula (1), (II) 15to 90% by weight of a halogen-containing monomer represented by the following formula (2), and (III) 0 to 20% by weight of a monomer copolymerizable with the above mentioned monomers, the composition of the copolymer being based on the total quantity of the monomers (I), (II), and (III):
wherein: D represents
in which n represents an integer selected from the group consisting of 0, 1 and 2; each R' represents hydrogen or a methyl group; Y represents CHOH; and r represents 0 or 1; each of X' and X2 represents, independently from each other, a methyl group in which one through three of the hydrogen atoms are substituted by a member selected from the group consisting of bromine, iodine and a hydroxyl group (OH group), with the proviso that the number of substitution of the OH group is only one; X3 represents a methyl group in which one through three of the hydrogen atoms are substituted by a member selected from the group consisting of bromine, iodine and D, with the proviso that the number of substitution of D is only one; wherein at least one of X', X2, and X3 contains at least one bromine or iodine;
wherein: each R2 represents hydrogen or a methyl group: p represents an integer selected from the group consisting of 0. 1. 2. and 3; X4 represents bromine or iodine; and q represents an integer selected from the group consisting of 1, 2.3.4. and 5.
An example of the copolymer is 1-methacryloxy-2,2-di (bromomethyl)-3-bromopropane. methacryloxypolyethyoxy-2.4.6- tribromobenzene styrene divinylbenzene having a n20D of 1.596 and a v of 35.3.
一种透镜材料,其折射率 n20D 至少为 1.57 和阿贝数 v 至少为 30 的镜片材料,包括:共聚物,其中(I) 10 至 85% (按重量计)由下式(1)代表的含卤素单体,(II) 15 至 90% (按重量计)由下式(2)代表的含卤素单体,和(III) 0 至 20% (按重量计)可与上述单体共聚的单体,共聚物的组成基于单体(I)、(II)和(III)的总量:
其中D 代表
其中 n 代表选自 0、1 和 2 所组成的组的整数;每个 R'代表氢或甲基;Y 代表 CHOH;r 代表 0 或 1;X'和 X2 各自独立地代表一个甲基,其中一至三个氢原子被选自溴、碘和羟基(OH 基)所组成的组的成员取代,但羟基的取代数仅为一个;X3 代表甲基,其中一至三个氢原子被选自溴、碘和 D 组成的组的成员取代,但 D 的取代数仅为一个;其中 X'、X2 和 X3 中至少有一个含有至少一个溴或碘;
其中:每个 R2 代表氢或甲基:p 代表选自 0、1、2 和 3 的整数;X4 代表溴或碘;以及 q 代表选自 1、2.3.4 和 5 的整数。
共聚物的一个例子是 1-甲基丙烯酰氧基-2,2-二(溴甲基)-3-溴丙烷。 甲基丙烯酰氧基聚乙氧基-2.4.6-三溴苯苯乙烯二乙烯基苯,其 n20D 为 1.596,v 为 35.3。