Tosoh Corporation

Masayasu Ito

Takahiro Kitagawa

Shinsuke Toyomasu

Kota Sakaguchi

Yasuyoshi Fujii

Tohru Doi

Kaori Suyama

Akira Inui

Takuya Komine

A resin composition suitable for an optical compensation film, an optical compensation film using the same, which is excellent in the retardation characteristics and wavelength dispersion characteristics, and a production method of an optical compensation film. A resin composition containing, as resin components, from 30 to 99 wt % of a cellulose-based resin represented by the following formula (1) and from 1 to 70 wt % of a cinnamic acid ester copolymer: 

Resin composition and optical compensation film using same

A resin composition including from 30 to 99 wt % of a cellulose-based resin represented by the following formula (1) and from 70 to 1 wt % of a fumaric acid ester polymer containing 30 mol % or more of a fumaric acid diester residue unit represented by the following formula (2); an optical compensation film using the same; and a production method of the optical compensation film. (wherein Rto Rrepresent a substituent having a carbon number of 1 to 12, and Rand Rrepresent an alkyl group having a carbon number of 1 to 12).

Resin composition, optical compensation film using same, and production method for same

To provide a novel fumaric acid diester-cinnamic acid ester-based copolymer having a high molecular weight, which is expected to maintain excellent strength or ensures excellent toughness even when formed into a film, a method for efficiently producing the copolymer, and a film using the same. The fumaric acid diester-cinnamic acid ester-based copolymer contains a fumaric acid diester residue unit, a cinnamic acid ester residue unit having an alkyl group with a carbon number of 1 to 6, and a residue unit of a polyfunctional monomer having two or more radical polymerizable functional groups.

Fumaric acid diester-cinnamic acid ester-based copolymer, production method thereof and film using the same

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Mie, Japan

Masayasu Ito