Fujifilm Corporation

Ichirou Nagata

Satoshi Sano

Kenichi Ishizuka

Shigehide Itou

Takeshi Umehara

Kentaro Shiratsuchi

Tomonori Ishino

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 has structure in which a polyimide compound is crosslinked and linked, and the polyimide compound is a copolymer having at least an imide group-containing monomer component and a monomer component having a specific polar group; and a module, a gas separation apparatus and a gas separation method using the same.

Gas separation composite membrane, and gas separating module, gas separation apparatus and gas separation method using the same

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 formed by a polyimide compound being crosslinked by a radically crosslinkable functional group thereof, and a ratio [&#x3b7;] of a crosslinked site to an imide group of the polyimide compound (the number of crosslinked sites/the number of imide groups) in the crosslinked polyimide resin is 0.0001 or more and 0.45 or less; a method of producing the same; and a gas separating module, a gas separation apparatus and a gas separation method using the same.

Gas separation composite membrane and method of producing the same, and gas separating module, gas separation apparatus and gas separation method using the same

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 has structure in which a polyimide compound is crosslinked through a specific crosslinking chain, the specific crosslinking chain has at least one kind of linking group selected from the group consisting of &#x2014;NRC(&#x2550;O)&#x2014;, &#x2014;NRC(&#x2550;O)O&#x2014;, &#x2014;CHOCH&#x2014;, &#x2014;CHSCH&#x2014;, &#x2014;OC(&#x2550;O)O&#x2014;, &#x2014;C(&#x2550;O)ON(R)&#x2014;, &#x2014;SON(R)&#x2014; and &#x2014;PON(R)&#x2014;, and R, R, R, Rand Reach independently represent a hydrogen atom or a substituent.

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Ashigarakami-gun, Japan

Ichirou Nagata