Liquid/liquid extraction

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United States of America Patent

PATENT NO 8957232
APP PUB NO 20130035383A1
SERIAL NO

13575402

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Abstract

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The invention relates to a method for the extraction of all unsaponifiable fraction contained in a vegetable oil, an oil originating from a micro-organism or a vegetable butter or in a co-product from the vegetable oil refining industry, such as deodorization discharge. The method includes at least: A) a step comprising the transformation of the aforementioned oils, butter or co-product from the vegetable oil refining industry or oils originating from micro-organisms into a hydro-alcoholic solution by means of, in particular, a step selected from saponification and esterification steps; B) a step comprising the extraction of the hydro-alcoholic solution in which the fatty fraction is separated from the unsaponifiable fraction by means of liquid/liquid extraction; and C) an optional step comprising the purification of the unsaponifiable fraction, selected from the group containing crystallization and liquid/liquid extraction steps. According to the invention, at least one step from the liquid/liquid extraction steps in step B, the crystallization steps in step C and the liquid/liquid extraction steps in step C is performed using a first solvent system containing a concentration of solvent selected from among: fluorinated aromatic solvents, particularly trifluorotoluene (BTF) and hexafluorobenzene (BHF); tert-butyl ethers, particularly 2-ethoxy-2-methylpropane, also known as ethyl-tert-butyl-ether (ETBE); solvents comprising at least one silicon atom, particularly hexamethyldisiloxane (HMDS) and tetramethylsilane (TMS); methyl-tetrahydrofuran (MeTHF); and mixtures thereof, representing at least 50 vol.-% in relation to the total volume of the solvent system. The invention also relates to the fractions obtained using this method and to compositions containing said fractions.

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Patent Owner(s)

Patent OwnerAddress
LABORATOIRES EXPANSCIENCE92048 PARIS LA DÉFENSE CEDEX

International Classification(s)

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  • 2011 Application Filing Year
  • C11B Class
  • 402 Applications Filed
  • 109 Patents Issued To-Date
  • 27.12 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20112012201320142015201620172018201920202021202220230255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Legrand, Jacques Neuilly sur Eure, FR 30 329
Mercier, Eglantine Rambouillet, FR 5 10
Saunois, Alex Nogent-le-Roi, FR 18 93

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  • C11B Class
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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges5321101 - 1011 - 2021 - 300246810121416182022242628303234

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