AROMATIC POLYIMIDE FILM AND METHOD FOR PRODUCING SAME

This invention aims to provide an aromatic polyimide film having a specific elastic modulus and a specific coefficient of thermal expansion and a process for the production thereof. This invention is directed to an aromatic polyimide film that is formed of an aromatic polyimide containing at least 7...

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Bibliographische Detailangaben
Hauptverfasser:	KIDO, NOBUAKI, ISHIWATA, TOYOAKI, MATSUO, JYUHOU
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	This invention aims to provide an aromatic polyimide film having a specific elastic modulus and a specific coefficient of thermal expansion and a process for the production thereof. This invention is directed to an aromatic polyimide film that is formed of an aromatic polyimide containing at least 70 mol% of a recurring unit of the following formula (I), and that satisfies the following expressions (1) and (2), CTE MD ‰¦ - 11 × Mi MD + 70 CTE TD ‰¦ - 11 × Mi TD + 70 wherein CTE MD is a coefficient of in-plane thermal expansion (ppm · K -1 ) in the machine direction, CTE TD is a coefficient of in-plane thermal expansion (ppm · K -1 ) in the transverse direction, Mi MD is an elastic modulus (GPa) in the machine direction, and Mi TD is an elastic modulus (GPa) in the transverse direction, and a process for the production thereof.