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publicationNumber US-5969087-A
titleOfInvention Polyimide, a method for manufacturing the same, a gas separation membrane using the polyimide and a method for manufacturing the same
abstract A novel polyimide having a repeating structure unit expressed by the following general formula (1), a method for manufacturing the same, a gas separation membrane using the novel polyimide and the method for manufacturing the same. The gas separation membrane using this polyimide is excellent in gas permeable performance and separation selectivity for gas, for example, carbon dioxide, methane, etc. General Formula (1) where R denotes a quadrivalent organic group.
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