Process for refining crude glyceride oils by membrane filtration

Details Process for refining crude glyceride oils by membrane filtration Process for refining crude glyceride oils by membrane filtration

1975-05-09

1977-12-13

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

210 23H, 210 23F, C09F 510

Patent

active

040628825

ABSTRACT:
Crude glyceride oils are refined by membrane filtration under pressure in solutions in organic solvents, particularly to separate phosphatides, which may also be refined according to the invention. The solvents are non-acidic, non-hydroxy solvents, e.g., esters, hydrocarbons and halogenated hydrocarbons, particularly in which micelles are formed and the solution is contacted under pressure with a semi-permeable membrane, preferably anisotropic and made from synthetic resin. These pass a permeate fraction of low molecular weight components, eg the glycerides and solvent, and retain a fraction of higher molecular weight, e.g., phosphatide micelles.

REFERENCES:
patent: 2930754 (1960-03-01), Stuckey
patent: 3043891 (1962-07-01), Stukey
patent: 3291730 (1966-12-01), Martin
patent: 3398088 (1968-08-01), Okey
patent: 3544455 (1970-12-01), Adams et al.
Michaels, A. S., "Membrane Ultrafiltration" Chemical Technology, Jan. 1971, pp. 56-63.

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