Membrane process for treating a charge containing dewaxing solve

Details Membrane process for treating a charge containing dewaxing solve Membrane process for treating a charge containing dewaxing solve

1991-03-19

1993-08-10

Morris, Theodore

Mineral oils: processes and products

Fractionation

585818, 585819, 21050027, 21050036, 210638, 210651, C07C 7144, B01D 7106, B01D 7126, B01D 6100

Patent

active

052345793

ABSTRACT:
Dewaxed oil containing dewaxing solvent from solvent dewaxing is treated by contact with a separating elastomer membrane to yield a retentate containing increased content of dewaxed oil and decreased content of dewaxing solvent and a permeate which contains increased content of dewaxing solvent and decreased content of dewaxed oil--the membrane including a barrier layer of an adduct of maleic acid anhydride and a poly(aliphatic terpene) which has been thermally cross-linked.

REFERENCES:
patent: 4885096 (1989-12-01), Black
patent: 4985138 (1991-01-01), Pasternak

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