Kaneka Corporation

Takuya Kamimura

Fuminobu Kitayama

Provided is a resin composition for use in producing a resin film by solution casting, the resin composition including a methacrylic polymer that has excellent heat resistance and that allows for a high evaporation rate of a solvent when the solvent is evaporated from a cast layer in solution casting. The resin composition for use in film production by solution casting includes a methacrylic polymer (a), and the methacrylic polymer (a) is a copolymer including a methyl methacrylate unit and at least one drying-accelerating comonomer unit and has a glass transition temperature of 110° C. or higher. The drying-accelerating comonomer unit is preferably selected from the group consisting of: an N-substituted maleimide monomer unit; a methacrylic ester unit containing an ester moiety in the form of a primary, secondary, or aromatic hydrocarbon group having 2 to 8 carbon atoms; a methacrylic ester unit containing an ester moiety in the form of a saturated hydrocarbon group having a fused ring structure and having 7 to 16 carbon atoms; a methacrylic ester unit containing an ester moiety in the form of a linear or branched group containing an ether bond; and a styrenic monomer unit.

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Osaka, Japan

Takuya Kamimura