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
View PDF 14 Cites 0 Cited by

Patent Information

Application Number
JP2022500684
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-10-06
Filing Date
2021-12-27
Publication Date
2026-07-07
Estimated Expiration
2041-12-27

Smart Images

  • Figure 0007885682000001
    Figure 0007885682000001
  • Figure 0007885682000002
    Figure 0007885682000002
  • Figure 0007885682000003
    Figure 0007885682000003
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Biaxially oriented polyester film

    JP1986204240A

  • Thermoplastic resin excellent in heat resistance and moldability and its production

    JP1988178119A

  • Blend of polyester with poly(vinylphenol)

    JP1993222277A

  • Easy adhesive white polyester film

    JP1998193543A

  • Flame-retardant resin composition

    JP2001055516A