Aromatics - non-armoatics separation by permeation through therm

Details Aromatics - non-armoatics separation by permeation through therm Aromatics - non-armoatics separation by permeation through therm

1988-06-13

1989-12-05

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

21050036, 21050043, B01D 1300

Patent

active

048850969

ABSTRACT:
Aromatic hydrocarbons are separated from mixtures of same with non-aromatics by permeation through a membrane of thermally crosslinked polyconjugated diene rubber containing from 15 to 50 wt % nitrile groups. Thermal crosslinking increases selectivity far beyond the level obtained when crosslinking is caused by other techniques. The separations are conducted under pervaporation or perstraction conditions.

REFERENCES:
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patent: 2958656 (1960-11-01), Stuckey
patent: 2958657 (1960-11-01), Benning et al.
patent: 2970106 (1961-01-01), Benning et al.
patent: 3043891 (1962-07-01), Stuckey
patent: 3813354 (1974-05-01), Chiolle et al.
patent: 3930990 (1976-01-01), Brun et al.
"Separation of Benzene-n Heptane Mixtures by Pervaporation with Elastomeric Membranes. I. Performance of Membranes", Larchet, et al., Journal of Membrane Society 15 (1983) 81-96.
Chemie Macromoleculaire, Brun, et al., C.R. Hebd. Frances Acad. Sci. Ser. C. 1977, 284 (20) 829-831.

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