METHOD TO IMPROVE THE SELECTIVITY OF POLYBENZOXAZOLE MEMBRANES

THE PRESENT INVENTION DISCLOSES A NOVEL METHOD TO IMPROVE THE SELECTIVITIES OF POLYBENZOXAZOLE (PBO) MEMBRANES PREPARED FROM AROMATIC POLYIMIDE MEMBRANES FOR GAS, VAPOR, AND LIQUID SEPARATIONS. THE PBO MEMBRANES THAT WERE PREPARED BY THERMAL TREATING AROMATIC POLYIMIDE MEMBRANES CONTAINING BETWEEN 0...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	ZHOU, LUBO, MINKOV, RAISA, LIU, CHUNQING, BRICKER, JEFFERY C, TANG, MAN-WING
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	THE PRESENT INVENTION DISCLOSES A NOVEL METHOD TO IMPROVE THE SELECTIVITIES OF POLYBENZOXAZOLE (PBO) MEMBRANES PREPARED FROM AROMATIC POLYIMIDE MEMBRANES FOR GAS, VAPOR, AND LIQUID SEPARATIONS. THE PBO MEMBRANES THAT WERE PREPARED BY THERMAL TREATING AROMATIC POLYIMIDE MEMBRANES CONTAINING BETWEEN 0.05 AND 20 WT-% OF A POLY(STYRENE SULFONIC ACID) POLYMER. THESE POLYMERS SHOWED UP TO 95% IMPROVEMENT IN SELECTIVITY FOR C0₂/CH₄ AND H₂/CH₄ SEPARALIONS COMPARED TO PBO MEMBRANES PREPARED FROM CORRESPONDING AROMATIC POLYIMIDE MEMBRANES WITHOUT A POLY(STYRENE SULFONIC ACID) POLYMER.