Low-hygroscopicity low-birefringence resin compositions,...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

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C525S241000, C525S479000, C525S474000, C525S075000

Reexamination Certificate

active

06900273

ABSTRACT:
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.

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