METHOD OF MANUFACTURING POLYIMIDE FILM, AND POLYIMIDE FILM
PROBLEM TO BE SOLVED: To provide a polyimide film restrained in coloring and enhanced in light transmittance, without impairing a physical property such as a heat resistance, and a method of manufacturing the same.SOLUTION: The polyimide film enhanced in light transmittance can be obtained by the me...
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| creator | UEKIDO TAKESHI KAMINE TETSUJI |
| description | PROBLEM TO BE SOLVED: To provide a polyimide film restrained in coloring and enhanced in light transmittance, without impairing a physical property such as a heat resistance, and a method of manufacturing the same.SOLUTION: The polyimide film enhanced in light transmittance can be obtained by the method of manufacturing the polyimide film having a step of obtaining a self-supporting film by flow-casting, on a support body, a polyamic acid solution containing a polyamic acid solution obtained by reacting a tetracarboxylic acid component with a diamine component, and a phosphate and/or a salt thereof of 0.00025 pt.wt or more and less than 0.001 pt.wt, per 100 pts.wt of the polyamic acid solution, followed to be dried, and a step of heating the self-supporting film. |
| format | Patent |
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| subjects | AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMISTRY COMPOSITIONS BASED THEREON ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PRINTED CIRCUITS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP |
| title | METHOD OF MANUFACTURING POLYIMIDE FILM, AND POLYIMIDE FILM |
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