Separation membrane and method for producing same

Abstract

The present invention provides a separation membrane which comprises a separation layer that has an amorphous structure and contains: (A) a polymer that has an isocyanuric acid skeleton and a siloxane bond, and is obtained by polymerizing, for example, a precursor that contains a compound represented by general formula (1); and (B) a metal ion. (In the formula, X moieties each independently represent a group represented by formula (2) or a monovalent hydrocarbon group having 1 to 8 carbon atoms, and at least one of the X moieties represents a group represented by formula (2)) (In the formula, R1 moiety represents an alkylene group having 1 to 8 carbon atoms, R2 moieties each independently represent a monovalent hydrocarbon group having 1 to 8 carbon atoms, R3 moiety represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and n represents an integer of 1 to 3. The line accompanied by a wiggly line indicates an atomic bond.)

Dependencies are inferred from the claim text.