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

1990-03-20

1991-01-08

Sever, Frank

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264298, B01D 6700

Patent

active

049833383

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 perstraction 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: 4359359 (1982-11-01), Gerlach et al.
patent: 4366062 (1982-12-01), Kurihara et al.
patent: 4557949 (1985-12-01), Kurihara et al.

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