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MEMBRANES FOR FLUE GAS SEPARATION COMPRISING CROSSLINKED, THERMALLY REARRANGED POLY(BENZOXAZOLE-CO-IMIDE) AND PREPARATION METHOD THEREOF
MEMBRANES FOR FLUE GAS SEPARATION COMPRISING CROSSLINKED, THERMALLY REARRANGED POLY(BENZOXAZOLE-CO-IMIDE) AND PREPARATION METHOD THEREOF
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机译:交联热重整聚苯并恶唑共酰亚胺的烟气分离膜及其制备方法
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摘要
The present invention relates to: a preparation, by simple thermal treatment of a membrane prepared from an ortho-hydroxy polyimide copolymer having a carboxylic acid, of a thermally rearranged poly(benzoxazole-imide) membrane having a structure cross-linked by direct thermal cross-linking and simultaneous thermal rearrangement; a flue gas separation membrane comprising a thermally rearranged poly(benzoxazole-imide) copolymer having a structure, in which the content of a benzoxazole group in a copolymer chain is less than 80%, cross-linked by a transesterification cross-linking reaction of the ortho-hydroxy polyimide copolymer having a carboxylic acid with a diol-based compound and subsequent thermal rearrangement; and a preparation method therefor.
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