Fluorine-containing polyquinazolone polymer and separation membrane using the same
AssigneeNitto Denko Corporation
InventorsHisao Hachisuka, Kenichi Ikeda
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Abstract
A fluorine-containing polyquinazolone polymer having a bisquinazolone unit represented by Formula 1 as the repeating unit is used for a gas separation membrane so that great chemical and heat resistance is provided. The membrane also has great permeability and effective separability, as well as excellent mechanical strength. ##STR1## where R.sub.1 indicates a tetravalent organic group, R.sub.2 respectively indicate an alkyl group or an aromatic group, R.sub.3 indicates a divalent organic group, and R.sub.1 and/or R.sub.3 indicates an organic group having at least one fluorine atom.
Claims6
A fluorine-containing polyquinazolone polymer having a bisquinazolone unit represented by Formula 1 as a repeating unit;
- ##STR20## where R.sub.1 indicates a tetravalent organic group, R.sub.2 respectively indicate an alkyl group or an aromatic group, R.sub.3 indicates a divalent organic group, and at least one of R.sub.1 and R.sub.3 indicates an organic group having at least one fluorine atom.
Dependencies are inferred from the claim text.