GB854999A - A process for the production of itaconic anhydride - Google Patents
A process for the production of itaconic anhydrideInfo
- 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
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.
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5260456A (en) * | 1987-11-20 | 1993-11-09 | Rhone-Poulenc Chimie | Process for producing itaconic anhydride |
-
1959
- 1959-04-06 GB GB11553/59A patent/GB854999A/en not_active Expired
Cited By (2)
| 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 |
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