GB935279A - Continuous process of producing esters - Google Patents
Continuous process of producing estersInfo
- 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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SG109957A1 (en) * | 2000-09-05 | 2005-04-28 | Oxeno Olefinchemie Gmbh | Process for preparing carboxylic esters |
-
0
- IT IT628681D patent/IT628681A/it unknown
-
1959
- 1959-03-26 GB GB1048459A patent/GB935279A/en not_active Expired
Cited By (2)
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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