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1. (WO2018222815) CARDO-TYPE CO-POLYIMIDE MEMBRANES FOR SOUR GAS FEED SEPARATIONS FROM NATURAL GAS

Pub. No.:    WO/2018/222815    International Application No.:    PCT/US2018/035302
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Fri Jun 01 01:59:59 CEST 2018
IPC: B01D 71/64
B01D 53/22
B01D 71/80
Applicants: SAUDI ARABIAN OIL COMPANY
ARAMCO SERVICES COMPANY
Inventors: YAHAYA, Garba, Oloriegbe
MOKHTARI, Ilham
BAHAMDAN, Ahmad, A.
Title: CARDO-TYPE CO-POLYIMIDE MEMBRANES FOR SOUR GAS FEED SEPARATIONS FROM NATURAL GAS
Abstract:
Co-polyimide membranes for separating components of sour natural gas where embodiments can include at least three distinct moieties polymerized together, the moieties including a 2,2'-bis(3,4- dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) based moiety; a 9,9-bis(4-aminophenyl) fluorene (CARDO) based moiety; and 2,3,5,6-tetramethyl-l,4-phenylenediamine (durene diamine) based moiety.