HIGH HEAT-RESISTANT FILM

PROBLEM TO BE SOLVED: To provide a film which is composed of a thermoplastic liquid crystal polymer and has a high degree of heat resistance. SOLUTION: The film is formed of a thermoplastic polymer capable of forming an optically anisotropic molten phase and provided with heat treatment, and meets t...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHIKAWA ATSUO, ONODERA MINORU
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a film which is composed of a thermoplastic liquid crystal polymer and has a high degree of heat resistance. SOLUTION: The film is formed of a thermoplastic polymer capable of forming an optically anisotropic molten phase and provided with heat treatment, and meets the relationships (1) and (2): (Ca-Cp)/Ca≥0.7 and (Da-Dp)/Dp≥0.005 when the degree of crystallinity and density of the film before heat treatment are taken as Cp and Dp, respectively, and the degree of crystallinity and density of the film after heat treatment are taken as Ca and Dp, respectively. COPYRIGHT: (C)2004,JPO