Dexerials Corporation

Kazuki Hirata

Akihiro Horii

Kei Obata

Ken Hosoya

Taku Ishimori

Hiroshi Sugata

Kanako Hashimoto

A cyclic olefin resin composition film having high toughness with less difference in toughness between length and width directions. The cyclic olefin resin composition film contains a cyclic olefin resin, a styrene elastomer and inorganic oxide fine particles having an average particle diameter of 40 nm or smaller, and has a linear expansion coefficient of 40 ppm/&#xb0; C. to 60 ppm/&#xb0; C. This film attains high toughness with less difference in toughness between length and width directions.

Cyclic olefin-based resin composition film

Provided is a cyclic olefin resin composition film having a small in-plane retardation and high toughness. The cyclic olefin resin composition film contains a cyclic olefin resin and a styrene elastomer having a storage modulus of lower than 100 MPa at 0&#xb0; C. to 100&#xb0; C. The styrene elastomer is dispersed in the cyclic olefin resin in an amount of 5 to 35 wt %. With this configuration, it is possible to lower the in-plane retardation of the film while ensuring the high toughness of the film.

Cyclic olefin resin composition film

Growing community of inventors

Shimotsuke, Japan

Kazuki Hirata