Film using resin composition

The resin composition of polystyrene and polyester, optimized with specific substituents and properties, addresses transparency and birefringence issues, enabling transparent films for optical applications.

JP7885682B2Active Publication Date: 2026-07-07TORAY INDUSTRIES INC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
TORAY INDUSTRIES INC
Filing Date
2021-12-27
Publication Date
2026-07-07

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Abstract

[Problem] To provide a resin composition and film, the resin composition comprising a polystyrene resin and a polyester resin having a low birefringence and good transparency. [Solution] The present invention is a resin composition including a resin A having a polystyrene as a basic skeleton and a resin B, which is a polyester, the resin A having a substituent containing an atom selected from any of nitrogen, oxygen, sulfur, and halogen; and a film including the resin A and resin B, and having an internal haze of 30% or less.
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