Process for increasing the selectivity of asymmetric membranes

Details Process for increasing the selectivity of asymmetric membranes Process for increasing the selectivity of asymmetric membranes

1987-05-11

1991-04-16

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 68, 55158, 55528, B01D 5322, B01D 7164

Patent

active

050079441

ABSTRACT:
A method for producing an improved membrane for separating gases in mixtures including forming an integral, asymmetric polyether imide membrane, treating the membrane with at least one organic fluid which is a solvent or swelling agent for polyether imide, and removing the organic fluid from the membrane by evaporation to obtain a tubular, flat or hollow fiber membrane exhibiting significantly higher selectivity than an untreated membrane.

REFERENCES:
patent: 3980456 (1976-09-01), Browall
patent: 4156597 (1979-05-01), Browall
patent: 4230463 (1980-10-01), Henis et al.
patent: 4472175 (1984-09-01), Malon et al.
patent: 4474858 (1984-10-01), Makino et al.
patent: 4486202 (1984-12-01), Malon et al.
patent: 4486376 (1984-12-01), Makino et al.
patent: 4528004 (1985-07-01), Makino et al.
patent: 4575385 (1986-03-01), Brooks et al.
patent: 4606740 (1986-08-01), Kulprathipanja
patent: 4654055 (1987-03-01), Malon et al.
patent: 4673418 (1987-06-01), Peinemann
patent: 4695295 (1987-09-01), Dorman et al.

Affiliated with

Also associated with

Rating

Process for increasing the selectivity of asymmetric membranes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for increasing the selectivity of asymmetric membranes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for increasing the selectivity of asymmetric membranes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-419155