GB854999A - A process for the production of itaconic anhydride - Google Patents

A process for the production of itaconic anhydride

Info

Publication number
GB854999A
GB854999A GB11553/59A GB1155359A GB854999A GB 854999 A GB854999 A GB 854999A GB 11553/59 A GB11553/59 A GB 11553/59A GB 1155359 A GB1155359 A GB 1155359A GB 854999 A GB854999 A GB 854999A
Authority
GB
United Kingdom
Prior art keywords
anhydride
itaconic anhydride
production
itaconic
itaconic 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
GB11553/59A
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.)
Pfizer Inc
Original Assignee
Pfizer Inc
Charles Pfizer and Co Inc
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 Pfizer Inc, Charles Pfizer and Co Inc filed Critical Pfizer Inc
Publication of GB854999A publication Critical patent/GB854999A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54—Preparation of carboxylic acid anhydrides
    • C07C51/56—Preparation of carboxylic acid anhydrides from organic acids, their salts, their esters or their halides, e.g. by carboxylation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Itaconic anhydride is prepared by heating itaconic acid in the presence of from about 0.4% to about 4% by weight, based on itaconic acid, of a sulphuric acid or an alkali metal monohydrogen sulphate catalyst, at a temperature of from 165 DEG C. to about 190 DEG C., preferably from 165 DEG C. to about 180 DEG C. The preferred reaction time is about 10-60 minutes. The product may be recovered by vacuum distillation, preferably as it is formed. In order to avoid the condensation of water formed in the reaction during distillation with consequential hydrolysis of the anhydride, a heated condenser may be used, e.g. at about 70-100 DEG C.
GB11553/59A 1958-04-23 1959-04-06 A process for the production of itaconic anhydride Expired GB854999A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US854999XA 1958-04-23 1958-04-23

Publications (1)

Publication Number Publication Date
GB854999A true GB854999A (en) 1960-11-23

Family

ID=22192017

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11553/59A Expired GB854999A (en) 1958-04-23 1959-04-06 A process for the production of itaconic anhydride

Country Status (1)

Country Link
GB (1) GB854999A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5260456A (en) * 1987-11-20 1993-11-09 Rhone-Poulenc Chimie Process for producing itaconic anhydride

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5260456A (en) * 1987-11-20 1993-11-09 Rhone-Poulenc Chimie Process for producing itaconic anhydride
US6018057A (en) * 1987-11-20 2000-01-25 Rhodia Chimie Process for producing acid anhydrides

Similar Documents

Publication Publication Date Title
GB1011581A (en) Process for recovering isophorone and acetone from the autocondensation products of acetone
GB854999A (en) A process for the production of itaconic anhydride
GB1017605A (en) Improvements in or relating to the preparation of dialkyl terephthalates
GB777782A (en) Purification of terephthalic acid
GB400413A (en) Process for the production of lactic acid
GB590274A (en) Improvements in or relating to the production of alkali metals or alloys thereof
GB883531A (en) Method of producing an ozonide of an unsaturated fatty acid
GB476109A (en) Improvements in and relating to the production of malic acid and its compounds
US1864229A (en) Production of galactonic acid and its lactone
JPS57200324A (en) Manufacture of dimedone
SU104770A1 (en) The method of obtaining propnonic acid from its esters
GB830114A (en) Process of preparing biuret from urea
GB788349A (en) Process for the synthesis of 1-bromo-4-chlorobutane
GB470468A (en) Improvements in the manufacture and production of ureas from alpha-omega-diaminocarboxylic acids
GB774563A (en) Process for the production of hydroxyalkane-sulphonic acids from their salts
GB850437A (en) Process for re-obtaining monomeric ªŠ-caprolactam from poly-ªŠ-caprolactam
GB629467A (en) Process for the production of salts of phenol-aldehyde condensates
GB680734A (en) Adducts of 22-acyloxybisnor-5, 7, 9 (11), 20 (22)-cholatetraenes
GB435721A (en) Improvements in process for preparing metol
GB855880A (en) Production of alpha hydroxyisobutyric acid
GB957667A (en) A process for the production of trans -cyclohexane-1,4-dimethanol
GB621531A (en) Manufacture of chlorinated aliphatic acids
GB708564A (en) Process for the manufacture of solutions of 2-aminonaphthalene in organic solvents
GB439735A (en) Acid and metal reaction process and product
GB438796A (en) A process for converting carbon monoxide into formic acid and its aluminium, chromium and iron salts