BIAXIALLY ORIENTED POLYESTER FILM AND PRODUCTION METHOD THEREOF

Disclosed is a biaxially oriented film made of (A) a polyester mainly composed of ethylene terephthalate and (B) a polyether imide and having a single glass transition temperature, a refractive index of 1.60 to 1.80 at least in either a machine direction or a transverse direction. The biaxially orie...

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Bibliographische Detailangaben
Hauptverfasser:	HOSOKAWA, HIROFUMI, TSUNEKAWA, TETSUYA, HIGASHIOJI, TAKUJI
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE CHEMISTRY COLOUR PRINTING COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ELECTRICITY GENERAL PROCESSES OF COMPOUNDING INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER LINING MACHINES MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING,INKING, DAMPING, OR THE LIKE METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICS PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM PRINTING PRINTING PLATES OR FOILS PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STAMPS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TYPEWRITERS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	Disclosed is a biaxially oriented film made of (A) a polyester mainly composed of ethylene terephthalate and (B) a polyether imide and having a single glass transition temperature, a refractive index of 1.60 to 1.80 at least in either a machine direction or a transverse direction. The biaxially oriented film is excellent in thermal dimensional stability, clarity and productivity, and is suitable for use in magnetic recording tape, magnetic recording card, printing plate, ribbon, capacitor, heat-sensitive mimeograph stencil or the like.