Low-hygroscopicity low-birefringence resin compositions, One of the compositions is a resin composition (a) comprising the following polymers (A), and (B) and/or (C). Another is a resin composition (b) comprising the following polymers (A), (B) and (H). Still another is a polymer comprising the following polymers (I) and (J), diphenylsilicone (D), and a phenolic antioxidant (E). (A) A polymer comprising one or more kinds of indene and indene derivatives represented by the following general formula (I). (B) A.polymer comprising polystyrene or a polystyrene derivative. (C) A polymer comprising a monomer copolymerizable with styrene or a styrene derivative. (H) A graft polymer having a structure wherein a polymer comprising at least one kind of indene and an indene derivative represented by the general formula (I) bonds to a side chain of a polymer comprising a monomer copolymerizable with styrene or a styrene derivative. (I) A polymer comprising one or more kinds of indene and indene derivatives represented by the general formula (I), wherein the polymer has a heterocyclic structure in a side chain thereof. (J) A polymer comprising styrene or a styrene derivative, and a monomer copolymerizable with styrene or a styrene derivative, wherein the polymer has a carboxyl group and/or a phenolic hydroxyl group in a side chain thereof.
                            低吸湿性低双折射
树脂组合物,其中一种组合物是由下列聚合物(A)、(B)和/或(C)组成的
树脂组合物(a)。另一种是由以下聚合物(A)、(B)和(H)组成的
树脂组合物(b)。还有一种是由以下聚合物(I)和(J)、二苯基
硅酮(D)和
酚类抗氧化剂(E)组成的聚合物。(A) 由一种或多种
茚和
茚衍
生物组成的聚合物,其代表通式如下(I)。(B) 由聚
苯乙烯或聚
苯乙烯衍
生物组成的聚合物。(C) 由可与
苯乙烯或
苯乙烯衍
生物共聚的单体组成的聚合物。(H) 具有以下结构的接枝聚合物:由通式(I)代表的至少一种
茚和
茚衍
生物组成 的聚合物与由可与
苯乙烯或
苯乙烯衍
生物共聚的单体组成的聚合物的侧链键 合。(I) 由通式(I)代表的一种或多种
茚和
茚衍
生物组成的聚合物,其中聚合物的侧链具有杂环结构。(J) 由
苯乙烯或
苯乙烯衍
生物和可与
苯乙烯或
苯乙烯衍
生物共聚的单体组成的聚 合物,其中聚合物的侧链中含有羧基和/或
酚羟基。