US2001021367A1PendingUtilityA1

Process for the extraction of a compound by a fluorocarbon compound

41
Priority: Mar 31, 1994Filed: Apr 26, 2001Published: Sep 13, 2001
Est. expiryMar 31, 2014(expired)· nominal 20-yr term from priority
Inventors:Richard PowellTimothy James NoakesPeter Frederick Wilde
B01D 11/0288A61K 36/13A61K 36/23B01D 11/02A61K 36/00
41
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Claims

Abstract

A process for extracting a compound or composition of matter from a raw material containing that compound or composition as a constituent part is described. The process comprises the steps of (1) contacting a sample of the raw material with an extraction solvent comprising a C 1-4 (hydro)fluorocarbon alone or with a co-solvent, and (2) separating the solvent liquor thus obtained containing the extract from the raw material. The process may be used to extract natural products, such as flavored or aromatic oils, and biologically active compounds, such as pesticides and pharmaceuticals.

Claims

exact text as granted — not AI-modified
1 . A process for extracting a composition comprising a biologically active compound or a precursor thereof from a raw material containing such a compound or precursor as a constituent part, which process comprises the steps of (1) contacting a sample of the raw material with an extraction solvent comprising a C 1-4  (hydro)fluorocarbon, and (2) separating the solvent liquor thus obtained containing the extract from the raw material.  
     
     
         2 . A process as claimed in    claim 1    wherein the composition to be extracted comprises a pesticide or a precursor thereof.  
     
     
         3 . A process as claimed in    claim 1    wherein the composition to be extracted comprises a pharmaceutically active substance or a precursor thereof.  
     
     
         4 . A process as claimed in    claim 3    wherein the composition to be extracted comprises a penicillin, an alkaloid, paclitaxel, monensin or cytochalasin.  
     
     
         5 . A process as claimed in any one of the preceding claims wherein the extraction solvent comprises a co-solvent in addition to the C 1-4  (hydro)fluorocarbon.  
     
     
         6 . A process for extracting a compound or composition of matter from a raw material containing that compound or composition as a constituent part, which process comprises the steps of (1) contacting a sample of the raw material with an extraction solvent comprising a C 1-4  (hydro)fluorocarbon and a co-solvent, and (2) separating the solvent liquor thus obtained containing the extract from the raw material.  
     
     
         7 . A process for extracting a natural product from a plant material containing that product as a constituent part, which process comprises the steps of (1) contacting a sample of the plant material with an extraction solvent comprising a C 1-4  (hydro)fluorocarbon and a co-solvent, and (2) separating the solvent liquor thus obtained containing the extract from the plant material.  
     
     
         8 . A process as claimed in    claim 7    wherein the natural product is a flavoured or aromatic oil.  
     
     
         9 . A process as claimed in any one of the preceding claims wherein the extraction solvent comprises a (hydro)fluorocarbon having a boiling point of 15° C. or below.  
     
     
         10 . A process as claimed in    claim 9    wherein the extraction solvent comprises a (hydro)fluorocarbon having a boiling point in the range of from −85 to 15° C.  
     
     
         11 . A process as claimed in    claim 9    wherein the extraction solvent comprises a (hydro)fluorocarbon having a boiling point of 0° C. or below.  
     
     
         12 . A process as claimed in    claim 11    wherein the extraction solvent comprises a (hydro)fluorocarbon having a boiling point in the range of from −85 to 0° C.  
     
     
         13 . A process as claimed in    claim 9    wherein the extraction solvent comprises a (hydro)fluorocarbon having a boiling point of −10° C. or below.  
     
     
         14 . A process as claimed in    claim 13    wherein the extraction solvent comprises a (hydro)fluorocarbon having a boiling point in the range of from −70 to −10° C.  
     
     
         15 . A process as claimed in any one of the preceding claims wherein the extraction solvent comprises a C 1-4  hydrofluorocarbon.  
     
     
         16 . A process as claimed in    claim 15    wherein the extraction solvent comprises a C 1-3  hydrofluorocarbon.  
     
     
         17 . A process as claimed in    claim 16    wherein the extraction solvent comprises a C 1-3  hydrofluorocarbon selected from the hydrofluoromethanes, the hydrofluoroethanes and the hydrofluoropropanes.  
     
     
         18 . A process as claimed in    claim 17    wherein the extraction solvent comprises a hydrofluoroethane.  
     
     
         19 . A process as claimed in    claim 18    wherein the extraction solvent comprises 1,1,1,2-tetrafluoroethane.  
     
     
         20 . A process as claimed in any one of    claims 5    to    19    wherein the extraction solvent comprises a co-solvent having a boiling point of 20° C. or below.  
     
     
         21 . A process as claimed in    claim 20    wherein the extraction solvent comprises a co-solvent having a boiling point in the range of from −85 to 20° C.  
     
     
         22 . A process as claimed in    claim 20    wherein the extraction solvent comprises a co-solvent having a boiling point of 10° C. or below.  
     
     
         23 . A process as claimed in    claim 22    wherein the extraction solvent comprises a co-solvent having a boiling point in the range of from −70 to 10° C.  
     
     
         24 . A process as claimed in    claim 20    wherein the extraction solvent comprises a co-solvent having a boiling point of 0° C. or below.  
     
     
         25 . A process as claimed in    claim 24    wherein the extraction solvent comprises a co-solvent having a boiling point in the range of from −60 to 0° C.  
     
     
         26 . A process as claimed in any one of    claims 5    to    25    wherein the co-solvent is a C 2-6  hydrocarbon.  
     
     
         27 . A process as claimed in    claim 26    wherein the co-solvent is a C 2-4  hydrocarbon.  
     
     
         28 . A process as claimed in any one of    claims 5    to    27    wherein the co-solvent is an alkane.  
     
     
         29 . A process as claimed in any one of    claims 5    to    25    wherein the co-solvent is a hydrocarbon ether.  
     
     
         30 . A process as claimed in    claim 29    wherein the co-solvent is a dialkyl ether.  
     
     
         31 . A process as claimed in any one of    claims 5    to    25    wherein the co-solvent is dimethyl ether, butane or a mixture thereof.  
     
     
         32 . A process as claimed in any one of    claims 5    to    31    wherein the extraction solvent comprises from 50.0 to 99.5% by weight of the C 1-4  (hydro)fluorocarbon and from 50.0 to 0.5% by weight of the co-solvent.  
     
     
         33 . A composition comprising a biologically active compound obtained from a raw material product using the extraction process of    claim 1   .  
     
     
         34 . A composition comprising a pharmaceutically active substance obtained from a raw material product using the extraction process of    claim 3   .  
     
     
         35 . A composition comprising a pesticide obtained from a raw material product using the extraction process of    claim 2   .  
     
     
         36 . A natural product obtained from a plant material using the extraction process of    claim 7   .  
     
     
         37 . A flavoured or aromatic oil obtained from a plant material using the extraction process of    claim 8   .

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