Separation membranes

Details Separation membranes Separation membranes

1993-07-27

1996-05-28

Spear, Frank

Liquid purification or separation

Filter

Material

2105004, 21050023, B01D 7156

Patent

active

055208096

ABSTRACT:
This invention relates to separation membranes composed of a mixture of two kinds or more of polymers containing at least one kind of polymer selected from polyesters, polyethers, polycarbonates, polyamides, and polyimides with a fluorene skeleton and possessing a spongy structure throughout and the membranes can be made by a known simple process, have not only excellent separatory ability but also good mechanical properties, and are particularly useful for ultrafiltration membranes and gas separation membranes.

REFERENCES:
patent: 5085676 (1992-02-01), Ekiner et al.
patent: 5116504 (1992-05-01), Sakashita et al.
patent: 5352272 (1994-10-01), Moll et al.

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