Hollow fiber membranes

Details Hollow fiber membranes Hollow fiber membranes

1991-08-01

1993-01-26

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 68, 55158, 264 41, 26417717, 264178F, 26421114, B01D 5322, B01D 6908, D01D 524

Patent

active

051819406

ABSTRACT:
A process for producing highly asymmetric hollow fibers useful as permselective gas separation membranes and for producing composite membranes thereof by extruding the spinning dope through a tube-in-orifice spinneret into a gas-filled chamber maintained at reduced pressure and then conveying the extruded hollow fiber through a liquid bath to solidify the extrudate.

REFERENCES:
patent: 4744932 (1988-05-01), Browne
patent: 4800049 (1989-01-01), Gras
patent: 4820460 (1989-04-01), Repetti et al.
patent: 4915886 (1990-04-01), Repetti et al.
patent: 4955993 (1990-09-01), Sanders, Jr. et al.
patent: 4992221 (1991-02-01), Malon et al.

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