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US 12,758,926 B2Granted
Gas separation membrane
AssigneeNitto Denko Corporation
InventorsToshiyuki Kawashima, Shunsuke Nomi, Yasuyuki Sakakibara, Jianhua Fang, Jingqiu Yu, Xiaoxia Guo
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Abstract
An object of the present invention is to provide a gas separation membrane containing a novel sulfonated polyimide and having superior gas separation performance. The gas separation membrane of the present invention contains a sulfonated polyimide represented by the following general formula (1): wherein Ar is an aryl group, X is more than 0 and 1 or less, and M+ is H+ or a metal cation.
Claims3
A gas separation membrane comprising a sulfonated polyimide represented by the following general formula (1):
- wherein Ar is an aryl group, X is more than 0 and less than 1, and M+ is H+ or a metal cation, and
- the aryl group is represented by the following chemical formula (2)
Dependencies are inferred from the claim text.