MEMBRANES FOR FLUE GAS SEPARATION COMPRISING CROSSLINKED, THERMALLY REARRANGED POLY(BENZOXAZOLE-CO-IMIDE) AND PREPARATION METHOD THEREOF

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 simul...

Full description

Saved in:
Bibliographic Details
Main Authors CALLE, MARIOLA, LEE, YOUNG MOO, LEE, JONG MYOUNG, JO, HYE JIN
Format Patent
LanguageEnglish
French
Published 21.05.2015
Subjects
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
Online AccessGet full text

Cover

More Information
Summary: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.
Bibliography:Application Number: CA20142930848