Title:
GAS SEPARATION MEMBRANE AND MANUFACTURE THEREOF
Document Type and Number:
Japanese Patent JP3462652
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a gas separation membrane which separates acid gas such as carbon dioxide gas from combustion exhaust gas and has improved gas permeability and separation characteristics by forming the gas separation membrane from a specific amine modified polyimide in which a part or the whole of hydrogen atoms of an alkyl group are replaced with an amine compound residue.
SOLUTION: This gas separation membrane having high permeability and separation characteristics for acid gas is an aromatic polyimide having repeating unit represented by the formula as a basic skeleton and is formed from an amine modified polyimide in which a part or the whole of hydrogen atoms of alkyl groups in the formula are replaced with amine compound residues. In the formula, X is an aromatic tetracarboxylic acid compound residue and Y is an aromatic diamine compound residue having at least one alkyl group as substituent. Such gas separation membrane is manufactured by causing a bromination agent to react with a polyimic acid, as the precursor of the aromatic polyimide, to introduce bromine into a part of the alkyl group and a brominated polyamic acid obtained is imidated.
Inventors:
Kenichi Okamoto
Motoaki Tajika
Koyo Matsumoto
Shigekazu Hatano
Yoshimasa Ando
Motoaki Tajika
Koyo Matsumoto
Shigekazu Hatano
Yoshimasa Ando
Application Number:
JP34269995A
Publication Date:
November 05, 2003
Filing Date:
December 28, 1995
Export Citation:
Assignee:
THE TOKYO ELECTRIC POWER COMPANY,INCORPORATED
MITSUBISHI HEAVY INDUSTRIES,LTD.
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
B01D53/22; B01D71/64; C08G73/10; (IPC1-7): B01D71/64; B01D53/22; C08G73/10
Domestic Patent References:
| JP3106426A | ||||
| JP63111921A | ||||
| JP671148A | ||||
| JP321336A |
Attorney, Agent or Firm:
Akira Uchida (2 outside)