GB743166A - Process for the separation of carboxylic acid ester mixtures - Google Patents

Process for the separation of carboxylic acid ester mixtures

Info

Publication number
GB743166A
GB743166A GB31925/53A GB3192553A GB743166A GB 743166 A GB743166 A GB 743166A GB 31925/53 A GB31925/53 A GB 31925/53A GB 3192553 A GB3192553 A GB 3192553A GB 743166 A GB743166 A GB 743166A
Authority
GB
United Kingdom
Prior art keywords
esters
liquid
aqueous solution
solid
separated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB31925/53A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of GB743166A publication Critical patent/GB743166A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B7/00—Separation of mixtures of fats or fatty oils into their constituents, e.g. saturated oils from unsaturated oils
    • C11B7/0083—Separation of mixtures of fats or fatty oils into their constituents, e.g. saturated oils from unsaturated oils with addition of auxiliary substances, e.g. cristallisation promotors, filter aids, melting point depressors
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/56—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B7/00—Separation of mixtures of fats or fatty oils into their constituents, e.g. saturated oils from unsaturated oils
    • C11B7/0075—Separation of mixtures of fats or fatty oils into their constituents, e.g. saturated oils from unsaturated oils by differences of melting or solidifying points

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Fats And Perfumes (AREA)

Abstract

Carboxylic acid ester mixtures are separated into components of different melting points by mixing a mixture of liquid and solid esters with an aqueous solution containing a surface-active substance and isolating the liquid and solid esters separated thereby. Liquid organic compounds may be further added to the mixtures. The aqueous solution containing the surface-active substance may also contain electrolytes, colloidal substances, water-soluble organic liquids, and substances which lower the freezing point. Specified esters include glycerides, wax esters, isomeric phthalic acid esters and esters of phenoxy acetic acid with sperm oil alcohol. The surface-active substances may comprise anionic compounds such as alkyl benzene sulphonates and alkyl sulphonates, sulphated alcohols, sulphonated fatty acid monoglycerides and soaps, particularly ethanolamine soaps. Compounds specified comprise sodium and magnesium salts of sulphated alcohols of chain length C12 to C14, C12 to C18 and C10, and soap with mono- and diglycerides. Cationic compounds may be used and a specified compound is dodecyl-benzyl-diethyl ammonium chloride. Other compounds may comprise polyglycol ethers of fatty alcohols or alkyl phenols, polyglycol esters of fatty acids, partial ethers of higher alcohols and partial esters of fatty acids with polyvalent alcohols. The further liquid organic compound which may be added to the mixtures comprise organic solvents and the liquid esters accumulating during the process. The electrolytes added to the aqueous solution containing the surface-active substance may comprise sodium sulphate or chloride, magnesium salts, and nickel chloride. The colloidal substances added thereto may comprise glue, gelatine, tragacanth, pectines, alginates, polyacrylates, cellulose glycollates and methyl celluloses. Substances lowering the freezing point may comprise polyvalent alcohols and their derivatives such as ethylene glycol, glycerine, polyglycerine and polyglycols and the partial ethers thereof. The esters to be separated are shaken or stirred with the aqueous solution, and the liquid and solid esters are separated by standing, the liquid esters being at the top and the solid esters being in the aqueous phase thereunder, or by centrifuging, preferably continuously in solid jacket centrifuges. A second separation may be made in either the liquid or solid ester using a fresh aqueous solution of the surface-active substance. The aqueous solution may be separated and used again.ALSO:Fats and waxes are separated into components of different melting points by mixing a mixture of liquid and solid fats or waxes with an aqueous solution containing a surface-active substance and isolating the liquid and solid fats or waxes separated thereby. Liquid organic compounds may be further added to the mixtures. The aqueous solution containing the surface-active substance may also contain electrolytes, colloidal substances, water-soluble organic liquids, and substances which lower the freezing point. The starting materials exemplified comprise lard, sperm oil, olive oil, cocoa butter, hardened coconut fat, and palm oil. The surface-active substances may comprise anionic compounds such as alkyl benzene sulphonates and alkyl sulphonates, sulphated alcohols, sulphonated fatty acid monoglycerides and soaps particularly ethanolamine soaps. Compounds specified comprise sodium and magnesium salts of sulphated alcohols of chain length C12 to C14, C12 to C18 and C10, and soap with fatty acid mono- and diglycerides. Cationic compounds may be used, and a specified compound is dodecyl-benzyl-diethyl ammonium chloride. Other compounds may comprise polyglycol ethers of fatty alcohols or alkyl phenols, polyglycol esters of fatty acids, partial ethers of higher alcohols, and partial esters of fatty acids with polyvalent alcohols. The further liquid organic compounds which may be added to the mixtures comprise organic solvents and the liquid esters accumulating during the process. The electrolytes added to the aqueous solution containing the surface active substance may comprise sodium sulphate or chloride, magnesium salts, and nickel chloride. The colloidal substances added thereto may comprise glue, gelatine, tragacanth, pectines, alginates, polyacrylates, cellulose glycolates and methyl celluloses. Substances lowering the freezing point may comprise polyvalent alcohols and their derivatives such as ethylene glycol glycerine, polyglycerine, and polyglycols and the partial ethers thereof. The fats or waxes to be separated are shaken or stirred with the aqueous solution and the liquid and solid esters are separated by standing, the liquid esters being at the top and the solid esters being in the aqueous phase thereunder, or by centrifuging, preferably continuously in solid jacket centrifuges. A second separation may be made on either the liquid or solid ester using a fresh aqueous solution of the surface-active substance. The aqueous solution may be separated and used again.
GB31925/53A 1952-11-19 1953-11-18 Process for the separation of carboxylic acid ester mixtures Expired GB743166A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE743166X 1952-11-19

Publications (1)

Publication Number Publication Date
GB743166A true GB743166A (en) 1956-01-11

Family

ID=6646665

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31925/53A Expired GB743166A (en) 1952-11-19 1953-11-18 Process for the separation of carboxylic acid ester mixtures

Country Status (1)

Country Link
GB (1) GB743166A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2747765A1 (en) * 1977-10-25 1979-04-26 Rau Lebensmittelwerke Fat rich in 1,3-di:palmitoyl-2-oleoyl-glycerol - used as cocoa butter substitute, prepd. by palm oil crystallisation comprising solvent treatment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2747765A1 (en) * 1977-10-25 1979-04-26 Rau Lebensmittelwerke Fat rich in 1,3-di:palmitoyl-2-oleoyl-glycerol - used as cocoa butter substitute, prepd. by palm oil crystallisation comprising solvent treatment

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