GB958064A - Method of purifying sugar esters - Google Patents

Method of purifying sugar esters

Info

Publication number
GB958064A
GB958064A GB2172061A GB2172061A GB958064A GB 958064 A GB958064 A GB 958064A GB 2172061 A GB2172061 A GB 2172061A GB 2172061 A GB2172061 A GB 2172061A GB 958064 A GB958064 A GB 958064A
Authority
GB
United Kingdom
Prior art keywords
ester
esters
acids
acid
organic solvent
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
GB2172061A
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.)
Spiess Dr GmbH
Original Assignee
Spiess Dr GmbH
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 Spiess Dr GmbH filed Critical Spiess Dr GmbH
Publication of GB958064A publication Critical patent/GB958064A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H13/00—Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids
    • C07H13/02—Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids by carboxylic acids
    • C07H13/04—Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids by carboxylic acids having the esterifying carboxyl radicals attached to acyclic carbon atoms
    • C07H13/06—Fatty acids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H1/00—Processes for the preparation of sugar derivatives
    • C07H1/06—Separation; Purification
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H15/00—Compounds containing hydrocarbon or substituted hydrocarbon radicals directly attached to hetero atoms of saccharide radicals
    • C07H15/02—Acyclic radicals, not substituted by cyclic structures
    • C07H15/04—Acyclic radicals, not substituted by cyclic structures attached to an oxygen atom of the saccharide radical
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H15/00—Compounds containing hydrocarbon or substituted hydrocarbon radicals directly attached to hetero atoms of saccharide radicals
    • C07H15/02—Acyclic radicals, not substituted by cyclic structures
    • C07H15/12—Acyclic radicals, not substituted by cyclic structures attached to a nitrogen atom of the saccharide radical
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H5/00—Compounds containing saccharide radicals in which the hetero bonds to oxygen have been replaced by the same number of hetero bonds to halogen, nitrogen, sulfur, selenium, or tellurium
    • C07H5/04—Compounds containing saccharide radicals in which the hetero bonds to oxygen have been replaced by the same number of hetero bonds to halogen, nitrogen, sulfur, selenium, or tellurium to nitrogen
    • C07H5/06—Aminosugars

Abstract

A sugar ester is purified by removing the organic solvent used in its production and adding preferably 3 to 20 times the quantity of water to the residue, heating the mixture to melt the ester (30 DEG to 60 DEG C.) and transforming the ester and its aqueous solution into a homogeneous emulsion by vigorous agitation, and precipitating the sugar ester by the application of heat and by the addition of salts and/or acids to bring the pH to between 4 and 7, the ester then being separated from the reaction mixture. The term sugar ester means esters of aliphatic carboxylic acids of 6 to 30 carbon atoms with mono, di or oligosaccharides or their derivatives. Suitable sugars, acids and esters are specified. The melting point of the ester may be reduced by adding fatty ester impurities. Preferably a volatile acid such as sulphuric or acetic acid or carbon dioxide is employed to give a r H of 6 to 7. Acid or neutral salts may be added to a concentration of 0.25-2.5 mols./litre to precipitate the ester. Separation may be effected by filtration, centrifugation or decantation and the esters are dried, or first taken up in an organic solvent and then recovered, after drying the solution, by distilling off the solvent.
GB2172061A 1960-06-18 1961-06-15 Method of purifying sugar esters Expired GB958064A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES68999A DE1277833B (en) 1960-06-18 1960-06-18 Process for purifying sugar esters

Publications (1)

Publication Number Publication Date
GB958064A true GB958064A (en) 1964-05-13

Family

ID=7500660

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2172061A Expired GB958064A (en) 1960-06-18 1961-06-15 Method of purifying sugar esters

Country Status (3)

Country Link
CH (1) CH398528A (en)
DE (1) DE1277833B (en)
GB (1) GB958064A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5011922A (en) * 1988-06-27 1991-04-30 Dai-Ichi Kogyo Seiyaku Co., Ltd. Process for purifying sucrose fatty acid esters
US5017697A (en) * 1988-06-29 1991-05-21 Dai Ichi Kogyo Seiyaku Co., Ltd. Process for purifying sucrose fatty acid esters having high HLB

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2004899C2 (en) * 1969-02-05 1984-07-26 Dai-Ichi Kogyo Seiyaku Co.,Ltd., Kyoto Process for the separation of impurities from sucrose fatty acid ester raw products
JPH02134391A (en) * 1988-11-14 1990-05-23 Dai Ichi Kogyo Seiyaku Co Ltd Production of powdery high hlb saccharose fatty acid ester

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5011922A (en) * 1988-06-27 1991-04-30 Dai-Ichi Kogyo Seiyaku Co., Ltd. Process for purifying sucrose fatty acid esters
US5017697A (en) * 1988-06-29 1991-05-21 Dai Ichi Kogyo Seiyaku Co., Ltd. Process for purifying sucrose fatty acid esters having high HLB

Also Published As

Publication number Publication date
CH398528A (en) 1966-03-15
DE1277833B (en) 1968-09-19

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