GB625203A - Improvements in or relating to the manufacture of aliphatic diesters of aromatic dicarboxylic acids - Google Patents

Improvements in or relating to the manufacture of aliphatic diesters of aromatic dicarboxylic acids

Info

Publication number
GB625203A
GB625203A GB1060547A GB1060547A GB625203A GB 625203 A GB625203 A GB 625203A GB 1060547 A GB1060547 A GB 1060547A GB 1060547 A GB1060547 A GB 1060547A GB 625203 A GB625203 A GB 625203A
Authority
GB
United Kingdom
Prior art keywords
hydroxy compound
acid
aliphatic
mono
acids
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
GB1060547A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1060547A priority Critical patent/GB625203A/en
Publication of GB625203A publication Critical patent/GB625203A/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
    • C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds

Landscapes

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

Abstract

Aliphatic diesters of aromatic dicarboxylic acids are obtained on heating, e.g. at 100-140 DEG C., an aliphatic monoester of the acid with an aliphatic hydroxy compound, distilling off water produced together with unchanged hydroxy compound, adding additional hydroxy compound to the reagents and distilling and continuing the process until the distillate is substantially free from water. It is preferred that acidic catalysts such as sulphuric acid and alkali metal bisulphates be present and that the hydroxy compound be slowly added to the reaction mixture in order that the maximum amount of water is removed therewith. In a modification the acid or its anhydride is heated with 2-3 mols. of the hydroxy compound, the monoester first formed being converted in situ to the diester by the above process. Acids specified are phthalic acid and hydrogenated phthalic, e.g. di- and tetra-hydrophthalic acids and hydroxy compounds specified are methanol, ethanol, the propanols, normal and secondary butanols and glycol ethers, e.g. ethylene glycol monomethyl ether. In examples: (1) mono-methyl-, (2) mono-n-butyl and (3) mono-(methoxy-ethyl)-phthalate obtained by heating the appropriate hydroxy compound with phthalic acid in the presence of a small proportion of sulphuric acid are converted without isolation into the corresponding diester.
GB1060547A 1947-04-21 1947-04-21 Improvements in or relating to the manufacture of aliphatic diesters of aromatic dicarboxylic acids Expired GB625203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1060547A GB625203A (en) 1947-04-21 1947-04-21 Improvements in or relating to the manufacture of aliphatic diesters of aromatic dicarboxylic acids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1060547A GB625203A (en) 1947-04-21 1947-04-21 Improvements in or relating to the manufacture of aliphatic diesters of aromatic dicarboxylic acids

Publications (1)

Publication Number Publication Date
GB625203A true GB625203A (en) 1949-06-23

Family

ID=9970924

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1060547A Expired GB625203A (en) 1947-04-21 1947-04-21 Improvements in or relating to the manufacture of aliphatic diesters of aromatic dicarboxylic acids

Country Status (1)

Country Link
GB (1) GB625203A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106631844A (en) * 2016-11-22 2017-05-10 山东友帮生化科技有限公司 Preparation method of dimethyl 3-aminophthalate
CN111574363A (en) * 2020-05-26 2020-08-25 杭州潜阳科技有限公司 Production process of dimethyl phthalate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106631844A (en) * 2016-11-22 2017-05-10 山东友帮生化科技有限公司 Preparation method of dimethyl 3-aminophthalate
CN111574363A (en) * 2020-05-26 2020-08-25 杭州潜阳科技有限公司 Production process of dimethyl phthalate
CN111574363B (en) * 2020-05-26 2023-09-26 杭州潜阳科技有限公司 Production process of dimethyl phthalate

Similar Documents

Publication Publication Date Title
GB660021A (en) Continuous esterification process
US2010154A (en) Ether acid ester of polyhydric alcohols
GB1032364A (en) Improvements in or relating to the preparation of water-soluble alkyd resins
GB625203A (en) Improvements in or relating to the manufacture of aliphatic diesters of aromatic dicarboxylic acids
Siegel et al. The esterification rate of dibasic acid anhydrides with primary alcohols at room temperature
GB1161942A (en) Process for the Preparation of Water-Soluble or Dilutable Synthetic Resins
GB761093A (en) Production of s-acetyl glutathione
GB646968A (en) Improvements in the manufacture of esters of aromatic dicarboxylic acids
US2014310A (en) Esters of 2-butyloctanol
US2032679A (en) Succinc acid esters of 2-ethylhexanol-1 and their production
Baumgarten et al. The Carbonation and Carbethoxylation of Certain Esters Using Sodium Triphenylmethide Reagent1, 2, 3
GB298137A (en) Improved process for concentrating acetic acid
US2399479A (en) Nitrogenous ester
GB421943A (en) Esters of 2-ethylbutanol-1
GB643033A (en) Improvements in or relating to high boiling esters of unsaturated aliphatic alcoholsand process of preparing same
GB354357A (en) Improvements in the manufacture and production of monoethers of the glycols or derivatives thereof
GB316324A (en) Improvements in and relating to the art of esters of dibasic acids particularly esters of polyhydroxy compounds containing at least two free hydroxyl groups
SU136553A1 (en) The method of producing cyclocabi
US1903587A (en) Process for the manufacture of halogen alcohols
GB731438A (en) Improvements in or relating to manufacture of amyl nitrate
GB656138A (en) Improvements in or relating to high molecular weight polyesters
GB951670A (en) Process for the preparation of tetraesters of penta-erythritol
GB427810A (en) Improvements in or relating to the production of esters of methacrylic acid
GB646052A (en) A process for the production of esters of allyl-type alcohols
GB405054A (en) Process for the manufacture of products derived from polyhydric alcohols and polybasic acids