CYCLOOLEFIN RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a cycloolefin resin composition that allows for the control of flexibility of the cycloolefin resin and can be molded in the environment of temperatures in excess of 140°C and to provide a cycloolefin resin film, a cycloolefin resin preform and the like using the cycloolefin resin composition.

SOLUTION: The cycloolefin resin composition comprises at least two kinds of cycloolefin copolymer resins one of which has a Tg not less than 10°C different than that of the others wherein the ratio (E'120/E'50) of a storage modulus at 120°C (E'120) to a storage modulus at 50°C (E'50) is controlled in the range of 0.15-0.65.

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