GB456525A - Manufacture of glycerole mono-lactate - Google Patents

Manufacture of glycerole mono-lactate

Info

Publication number
GB456525A
GB456525A GB1112335A GB1112335A GB456525A GB 456525 A GB456525 A GB 456525A GB 1112335 A GB1112335 A GB 1112335A GB 1112335 A GB1112335 A GB 1112335A GB 456525 A GB456525 A GB 456525A
Authority
GB
United Kingdom
Prior art keywords
benzene
glycerol
alcohol
lactate
monolactate
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
GB1112335A
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.)
Tronox Pigment UK Ltd
Original Assignee
Cristal Pigment UK Ltd
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 Cristal Pigment UK Ltd filed Critical Cristal Pigment UK Ltd
Priority to GB1112335A priority Critical patent/GB456525A/en
Publication of GB456525A publication Critical patent/GB456525A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/03—Preparation of carboxylic acid esters by reacting an ester group with a hydroxy group

Abstract

Glycerol monolactate is made by heating glycerol with a lactic acid ester of an alcohol boiling below 100 DEG C. The reactants in about equimolecular proportions may be heated in the presence of an esterification catalyst, the temperature being kept below 100 DEG C. A solvent or diluent boiling below 100 DEG C. may be present which facilitates removal of the liberated alcohol. In an example, ethyl lactate, glycerol, benzene, and sulphuric acid are boiled together under a fractionating column, the vapours of alcohol and benzene which distil being condensed, washed with water, and the separating benzene continuously returned. After neutralization with caustic soda, benzene is removed by distillation. The glycerol monolactate contains a trace of sodium sulphate. To avoid this, barium hydroxide may be used in neutralizing and the precipitate separated. Methyl lactate may replace the ethyl ester. Specification 346,486 is referred to.
GB1112335A 1935-04-10 1935-04-10 Manufacture of glycerole mono-lactate Expired GB456525A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1112335A GB456525A (en) 1935-04-10 1935-04-10 Manufacture of glycerole mono-lactate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1112335A GB456525A (en) 1935-04-10 1935-04-10 Manufacture of glycerole mono-lactate

Publications (1)

Publication Number Publication Date
GB456525A true GB456525A (en) 1936-11-10

Family

ID=9980449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1112335A Expired GB456525A (en) 1935-04-10 1935-04-10 Manufacture of glycerole mono-lactate

Country Status (1)

Country Link
GB (1) GB456525A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584998A (en) * 1948-06-18 1952-02-12 Edward M Filachione Mixed glycerol esters and their acylation products
CN102675103A (en) * 2012-04-27 2012-09-19 孝感市易生新材料有限公司 Method for producing menthyl lactate with high content and high optical purity by using two-step method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584998A (en) * 1948-06-18 1952-02-12 Edward M Filachione Mixed glycerol esters and their acylation products
CN102675103A (en) * 2012-04-27 2012-09-19 孝感市易生新材料有限公司 Method for producing menthyl lactate with high content and high optical purity by using two-step method

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