Polyimide precursor solution, method for producing porous polyimide film, and porous polyimide film
A polyimide precursor solution contains: an aqueous solvent containing water; particles; and a polyimide precursor, wherein the polyimide precursor has a high molecular weight region A containing a high molecular weight side maximum value and a low molecular weight region B containing a low molecula...
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| creator | Nakada, Kosuke Hirose, Hidekazu Iwanaga, Takeshi Okubo, Tomoyo Sugahara, Hajime Seitoku, Shigeru |
| description | A polyimide precursor solution contains: an aqueous solvent containing water; particles; and a polyimide precursor, wherein the polyimide precursor has a high molecular weight region A containing a high molecular weight side maximum value and a low molecular weight region B containing a low molecular weight side maximum value in an elution curve obtained by gel permeation chromatography, a weight average molecular weight in the high molecular weight region A is 50,000 or more, a weight average molecular weight in the low molecular weight region B is 10,000 or more and 30,000 or less, and a value of a/(a+b) is 0.60 or more and 0.98 or less in which a represents an area of the high molecular weight region A and b represents an area of the low molecular weight region B. |
| format | Patent |
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| subjects | AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP |
| title | Polyimide precursor solution, method for producing porous polyimide film, and porous polyimide film |
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