C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 307/20 (2006.01) B01F 17/00 (2006.01) C07D 309/10 (2006.01) C07D 493/04 (2006.01) C07H 13/06 (2006.01)
Patent
CA 2146993
The invention relates to a composition composed of fatty acid esters of hexitans (sorbitans) and non-esterified polyols, having a content of non-esterified polyols in the range of 6.59 wt. % to 0.05 wt. %, and to a process for purification by removing non-esterified polyols from a composition composed of fatty acid esters of hexitans and non-esterified polyols, which process comprises the steps of: a) dissolving said composition in a solution comprising at least one hydrocarbon and at least one polar organic solvent to produce an organic solution of said composition; b) mixing or contacting said organic solution with an aque- ous solution of at least one metal salt under conditions effective to extract said non-esterified polyols; and c) separating said or- ganic solution from the aqueous solution, optionally followed by the recovery of the purified fatty acid esters of hexitans.
Adamski Robert Paul
Beshouri Sharon Marie
Ridout & Maybee Llp
Shell Oil Company
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