Process for treating a charge containing dewaxing solvent and de

Details Process for treating a charge containing dewaxing solvent and de Process for treating a charge containing dewaxing solvent and de

1989-11-08

1991-01-15

Pal, Asok

Mineral oils: processes and products

Fractionation

208 33, 210651, 21050037, 210638, 585819, C10G 7304

Patent

active

049851381

ABSTRACT:
Dewaxed oil containing dewaxing solvent from solvent dewaxing is treated by contact with a separating 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 dewaxing oil--the membrane including a polyimine layer which has been cross-linked with polyisocyanate or poly(carbonyl chloride).

REFERENCES:
patent: 3179632 (1965-04-01), Hendrix
patent: 3822202 (1974-07-01), Hoehn
patent: 4532029 (1985-07-01), Black et al.
patent: 4532041 (1985-07-01), Shuey et al.
patent: 4571444 (1986-02-01), Black et al.
patent: 4678555 (1987-07-01), Wernick
patent: 4836927 (1989-06-01), Wan

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