Composite or asymmetric fluorine-containing polyimide membrane,

Details Composite or asymmetric fluorine-containing polyimide membrane, Composite or asymmetric fluorine-containing polyimide membrane,

1992-03-30

1992-11-24

Foelak, Morton

Coating processes

Foraminous product produced

Microporous coating

427246, 55 16, 55158, B05D 500

Patent

active

051659638

ABSTRACT:
A composite or asymmetric membrane for separating and concentrating a particular component from a mixture of gases. The asymmetric membrane is of a fluorine-containing aromatic polyimide resin of the 6FDA type. The composite membrane has a thin film of an elastomeric polymer formed on a supporting film of a fluorine-containing aromatic polyimide resin of the 6FDA type.

REFERENCES:
patent: 4414280 (1983-11-01), Silva
patent: 4784880 (1988-11-01), Coplan et al.
patent: 4857363 (1989-08-01), Sasaki et al.
patent: 5091216 (1992-02-01), Ekiner et al.

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