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US 10,537,859 B2Granted
Gas separation membrane, gas separation module, gas separation device, gas separation method, and polyimide compound
AssigneeFUJIFILM Corporation
InventorsKoji Hironaka, Satoshi Sano, Yusuke Iizuka, Sotaro Inomata, Keisuke Kodama, Tetsu Kitamura
Life of this patent
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Abstract
A gas separation membrane includes a gas separation layer containing a polyimide compound having a repeating unit represented by Formula (I), in Formula (I), RI represents a hydrogen atom, an alkyl group, or a halogen atom, Xa represents a sulfamoyl group, an alkoxysulfonyl group, a carboxy group, a hydroxy group, an acyloxy group, or a halogen atom, and R represents a mother nucleus having a specific structure.
Claims16
A gas separation membrane comprising:
- a gas separation layer containing a polyimide compound,
- wherein the polyimide compound has a repeating unit represented by Formula (I),
- in Formula (I), RI represents a hydrogen atom, an alkyl group, or a halogen atom, and Xa represents a sulfamoyl group, an alkoxysulfonyl group, a carboxy group, a hydroxy group, an acyloxy group, or a halogen atom, and
- R represents a group having a structure represented by any of Formulae (I-1) to (I-28), where X1 to X3 each independently represent a single bond or a divalent linking group, L represents —CH═CH— or —CH2—, R1 and R2 each independently represent a hydrogen atom or a substituent, and the symbol “*” represents a binding site with respect to a carbonyl group in Formula (I)
1 more element
A polyimide compound having a repeating unit represented by Formula (I),
- in Formula (I), RI represents a hydrogen atom, an alkyl group, or a halogen atom, and Xa represents a sulfamoyl group, an alkoxysulfonyl group, a carboxy group, a hydroxy group, an acyloxy group, or a halogen atom, and
- R represents a group having a structure represented by any of Formulae (I-1) to (I-28), where X1 to X3 each independently represent a single bond or a divalent linking group, L represents —CH═CH— or —CH2—, R1 and R2 each independently represent a hydrogen atom or a substituent, and the symbol “*” represents a binding site with respect to a carbonyl group in Formula (I)
Dependencies are inferred from the claim text.