Cyclic olefin ring-opening copolymer and use thereof

    公开(公告)号:JP5304244B2

    公开(公告)日:2013-10-02

    申请号:JP2008526713

    申请日:2007-06-27

    CPC classification number: C08G61/08 G02B5/3083

    Abstract: A cyclic olefin ring-opened copolymer comprising an essential constitutional unit (1) represented by the formula (1) and at least two other specific constitutional units.(1) It becomes possible to provide a novel norbornene ring-opened copolymer which has excellent heat resistance, processability and transparency, can be suitably used in various types of optical films and, when formed into a retardation film, can control the level of birefringence (phase difference) and wavelength dependency, an optical member, a film or a stretched film formed from the copolymer, and a polarizing plate or a liquid crystal display system using the stretched film.

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