Abstract:
A gas separation composite membrane, containing a gas-permeable supporting layer and a gas separating layer containing a crosslinked organic-inorganic hybrid resin over the gas-permeable supporting layer, in which the crosslinked organic-inorganic hybrid resin has a structure in which a polymer incorporating therein an oxanthrene unit, or a polyimide compound has been crosslinked via a specific crosslinking chain.
Abstract:
A gas separation membrane having a gas separating layer containing a polybenzoxazole resin, in which the polybenzoxazole exhibits a solubility of 1% by mass or more to any one solvent selected from tetrahydrofuran, chloroform, methyl ethyl ketone, and N-methylpyrrolidone, at a temperature of 30° C., a gas separation module utilizing the gas separation membrane, a gas separation apparatus, and a gas separation method.
Abstract:
A gas separation composite membrane, containing a gas permeable supporting layer, and a gas separating layer containing a crosslinked polyimide resin above the gas permeable supporting layer, in which the crosslinked polyimide resin has a structure in which 2 to 4 molecules of a polyimide compound is coordinated with a divalent to tetravalent central metal via an oxygen atom or a sulfur atom, and when the crosslinked polyimide resin has plural central metals, the plural central metals are linked via the polyimide chain of the polyimide compound; and a gas separating module, a gas separation apparatus and a gas separation method utilizing this gas separation composite membrane.
Abstract:
A gas separation composite membrane, containing: a gas-permeable supporting layer; and a gas separating layer containing a crosslinked polyimide resin, over the gas-permeable supporting layer, in which the crosslinked polyimide resin is composed of a polyimide compound having been crosslinked through an ester linking group, in which the polyimide compound contains a repeating unit of formula (I), a repeating unit of formula (II-a) or (II-b), and a repeating unit of formula (III-a) or (III-b), and in which a ratio [κ] of a site forming a crosslinked chain mediated by the ester linking group to an imide group (the number of specific crosslinkable sites/the number of imide groups) is more than 0.4 and less than 0.5.