Isocyanurate crosslinked polyurethane membranes and their use fo

Details Isocyanurate crosslinked polyurethane membranes and their use fo Isocyanurate crosslinked polyurethane membranes and their use fo

1989-08-09

1990-05-29

Sever, Frank

Liquid purification or separation

Processes

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

55 16, 55158, 210654, B01D 1300

Patent

active

049293575

ABSTRACT:
The present invention is directed to non-porous isocyanurate-crosslinked polyurethane membranes. These membranes are useful for the separation of aromatic hydrocarbons from non-aromatic hydrocarbons. The separation can be performed using any commonly accepted membrane separation technique, e.g. reverse osmosis, dialysis, pervaporation or perstraction but is preferably performed under pervaporation or prestraction conditions.

REFERENCES:
patent: 2930754 (1960-03-01), Stuckey
patent: 2958656 (1960-11-01), Stuckey
patent: 3370102 (1968-02-01), Carpenter et al.
patent: 4115465 (1978-09-01), Elfert et al.
patent: 4366062 (1982-12-01), Kurihara et al.
patent: 4557949 (1985-12-01), Kurihara et al.

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