Preparation of gas separation membrane and spiral wound gas sepa

Details Preparation of gas separation membrane and spiral wound gas sepa Preparation of gas separation membrane and spiral wound gas sepa

1991-09-04

1993-08-17

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

264 458, 264 87, 264171, 264216, 264232, B29C 6720

Patent

active

052366430

ABSTRACT:
The invention relates to a process for preparing gas separation membranes or modules. Membrane forming material is cast into a wet membrane which is wound into a spiral module. The spiral module is arranged in a closed circulating apparatus. Exchanging solvents or treating solutions are circulated through the circulating apparatus and the spiral module for an appropriate period of time. The module and circulating apparatus are purged until the membrane is dry, thus producing a gas separation membrane or module.

REFERENCES:
patent: 3432584 (1969-03-01), Cannon et al.
patent: 3497072 (1970-02-01), Cannon
patent: 3842020 (1974-10-01), Garrett
patent: 4080743 (1978-03-01), Manos
patent: 4134742 (1979-01-01), Sohell
patent: 4430807 (1984-02-01), Davis et al.

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