COMPOSITE GAS SEPARATION MEMBRANE, GAS SEPARATION MODULE, GAS SEPARATION APPARATUS AND GAS SEPARATION METHOD

摘要

A composite gas separation membrane which has a gas separation layer containing a polyimide resin on top of a gas permeable supporting layer, and wherein the polyimide resin contains a repeating unit represented by formula (I). In formula (I), X represents a group having a specific structure represented by one of formulae (I-a)-(I-h). In formula (I), Y1 represents a group having a structure represented by formula (II-a) or (II-b). In formulae (II-a) and (II-b), R3 represents a substituent; A represents a dissociative group; p represents 0 or 1; p1 represents an integer of 0-2; and p2 represents an integer of 2 or more.