GB935279A - Continuous process of producing esters - Google Patents

Continuous process of producing esters

Info

Publication number
GB935279A
GB935279A GB1048459A GB1048459A GB935279A GB 935279 A GB935279 A GB 935279A GB 1048459 A GB1048459 A GB 1048459A GB 1048459 A GB1048459 A GB 1048459A GB 935279 A GB935279 A GB 935279A
Authority
GB
United Kingdom
Prior art keywords
reactor
alcohol
ester
water
acid
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
GB1048459A
Inventor
Kenneth Wilfred Geddes
Robert Norman Maclean
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.)
Distillers Co Yeast Ltd
Distillers Co Ltd
Original Assignee
Distillers Co Yeast Ltd
Distillers Co 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
Priority to IT628681D priority Critical patent/IT628681A/it
Application filed by Distillers Co Yeast Ltd, Distillers Co Ltd filed Critical Distillers Co Yeast Ltd
Priority to GB1048459A priority patent/GB935279A/en
Priority to FR821339A priority patent/FR1251604A/en
Publication of GB935279A publication Critical patent/GB935279A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
    • C07C69/80—Phthalic acid esters
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/02—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen
    • C07C69/22—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen having three or more carbon atoms in the acid moiety
    • C07C69/24—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen having three or more carbon atoms in the acid moiety esterified with monohydroxylic compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/52—Esters of acyclic unsaturated carboxylic acids having the esterified carboxyl group bound to an acyclic carbon atom
    • C07C69/593—Dicarboxylic acid esters having only one carbon-to-carbon double bond
    • C07C69/60—Maleic acid esters; Fumaric acid esters
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A continuous process for the preparation of an ester comprises heating an acid reactant which is less volatile than water with excess of an alcohol which is more volatile than water and the ester produced and which is capable of forming an azeotrope with water, in a reactor to which the reactants are fed separately in countercurrent flow to form an ester, passing a mixture of the vapours of the alcohol and water from the reactor to a distillation column wherein the vapours are fractionally distilled, removing any excess water from the base of the distillation column, recycling the alcohol-water azeotrope in vapour form from the head of the distillation column to the reactor at a point adjacent to that at which the acid reactant is fed thereto, removing a liquid mixture of the ester and the alcohol from the reactor, separating the ester from the alcohol and returning the separated alcohol to the distillation column. The acid reactant is a carboxylic acid, e.g. stearic, maleic, adipic, sebacic, isosebacic, phthalic, isophthalic or terephthalic acid, a carboxylic acid anhydride, e.g. phthalic or maleic anhydride, or a carboxylic ester-acid. The reactor may be in the form of a series of zones each being heated by independent heating means, and so may be similar to a bubble cap fractionating column. The alcoholwater azeotrope obtained on fractioning the vapours from the reactor may be returned to several points in the column reactor. The liquid mixture of ester and alcohol withdrawn from the reactor may be stripped of the alcohol by fractional distillation, if desired, with the aid of steam. The esterification may be effeced at 110 DEG -250 DEG C., and a catalyst may be present, e.g. sulphuric or toluene sulphonic acid. The preparation of diethyl phthalate is described in detail with reference to a suitable form of apparatus. The process described in the Provisional Specification is not restricted to the feeding of the reactants in countercurrent flow and includes the use of esters as acid reactant.
GB1048459A 1959-03-26 1959-03-26 Continuous process of producing esters Expired GB935279A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
IT628681D IT628681A (en) 1959-03-26
GB1048459A GB935279A (en) 1959-03-26 1959-03-26 Continuous process of producing esters
FR821339A FR1251604A (en) 1959-03-26 1960-03-15 Continuous process for the production of an ester of an acid and a volatile alcohol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1048459A GB935279A (en) 1959-03-26 1959-03-26 Continuous process of producing esters

Publications (1)

Publication Number Publication Date
GB935279A true GB935279A (en) 1963-08-28

Family

ID=9968689

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1048459A Expired GB935279A (en) 1959-03-26 1959-03-26 Continuous process of producing esters

Country Status (2)

Country Link
GB (1) GB935279A (en)
IT (1) IT628681A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG109957A1 (en) * 2000-09-05 2005-04-28 Oxeno Olefinchemie Gmbh Process for preparing carboxylic esters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG109957A1 (en) * 2000-09-05 2005-04-28 Oxeno Olefinchemie Gmbh Process for preparing carboxylic esters
US6916950B2 (en) 2000-09-05 2005-07-12 Oxeno Olefinchemie Gmbh Process for preparing carboxylic esters

Also Published As

Publication number Publication date
IT628681A (en)

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