NORBORNENE COMPOUND ADDITION POLYMER FILM, PROCESS FOR PRODUCTION THEREOF, AND USE THEREOF

摘要

[PROBLEMS] To provide: a norbornene compound addition polymer film which is excellent in heat resistance, chemical resistance, dimensional stability and the like and can be suitably used in an optical element or an electrical insulating element; a process for production of the film; and use of the film. [MEANS FOR SOLVING PROBLEMS] The norbornene compound addition polymer film satisfies at least one of the following requirements: when the film is heated from 25°C to 200°C and then cooled to 25°C, the dimensional change rate between the film size before heating and that after cooling is 100 ppm or less; and when the film is immersed in propylene glycol monomethyl ether acetate at 25°C for one hour, the dimensional change rate between the film size before the immersion and that after the immersion is 100 ppm or less. The method for production of a norbornene compound addition polymer film comprises the step of maintaining a film which is made of a norbornene compound addition polymer having a glass transition temperature T°C and has a remaining solvent amount of 5,000 ppm or less, at a temperature falling within the range from (T-150)°C or 180°C, whichever is higher, to T°C.