Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1991-04-29
1992-04-07
Sever, Frank
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210654, B01D 6900
Patent
active
051025515
ABSTRACT:
Charge containing dewaxed oil and dewaxing solvent (typically methyl ethyl ketone and toluene) is treated to separate dewaxing solvent by use of a separating elastomer membrane barrier of a polysiloxane which has been cross-linked as with toluene diisocyanate, adipoyl dichloride, a dialkoxy silane, or a diacetoxy silane.
REFERENCES:
patent: 4167612 (1979-09-01), Tucker et al.
patent: 4602922 (1986-07-01), Cabasso et al.
Kulason Robert A.
O'Loughlin James J.
Seutter Carl G.
Sever Frank
Texaco Inc.
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