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    • 9. 发明申请
    • OPTICAL RESIN COMPOSITION AND FILM
    • 光学树脂组合物和薄膜
    • US20170031058A1
    • 2017-02-02
    • US15100163
    • 2014-11-27
    • KANEKA CORPORATION
    • Fuminobu KITAYAMAHaruki KOYAMA
    • G02B1/04C08J5/18
    • G02B1/04C08F265/06C08J5/18C08J2333/12C08J2333/26C08J2335/02C08J2433/06C08J2433/26C08J2435/02C08J2451/00C08L101/00C08L33/08C08L51/08
    • Disclosed herein are an optical resin composition whose orientation birefringence and photoelastic birefringence are both very low and which has high transparency and which provides a film having few surface defects and excellent mechanical strength, and a film comprising the optical resin composition. Also disclosed herein is a film that has optical isotropy and excellent transparency even after stretching.The optical resin composition contains a thermoplastic resin and a multistep-polymerized graft copolymer obtained by polymerizing, in the presence of crosslinked polymer-containing particles formed by polymerizing a monomer mixture containing a monomer represented by the following formula (4) and a polyfunctional monomer, a monomer mixture containing a monomer represented by the following formula (4) and another monofunctional monomer copolymerizable therewith.
    • 本文公开了一种光学树脂组合物,其取向双折射和光弹性双折射都非常低,并且具有高透明度,并且提供了具有很少表面缺陷和优异的机械强度的膜,以及包含光学树脂组合物的膜。 这里也公开了即使在拉伸后也具有光学各向同性和优异的透明性的膜。 光学树脂组合物含有热塑性树脂和通过聚合含有由下式(4)表示的单体的单体混合物和多官能单体形成的含交联聚合物的颗粒存在下得到的多步聚合的接枝共聚物, 含有由下式(4)表示的单体的单体混合物和可与其共聚的其它单官能单体。