GB643620A - Improvements in and relating to the production of acetic anhydride - Google Patents
Improvements in and relating to the production of acetic anhydrideInfo
- Publication number
- GB643620A GB643620A GB1493548A GB1493548A GB643620A GB 643620 A GB643620 A GB 643620A GB 1493548 A GB1493548 A GB 1493548A GB 1493548 A GB1493548 A GB 1493548A GB 643620 A GB643620 A GB 643620A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acetic acid
- ketene
- acetic anhydride
- compound
- reaction vessel
- 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
Acetic anhydride is prepared by mixing acetic acid with at least one sulphur-containing compound which is either liquid or gaseous at about 20 DEG C. and also with a dehydration catalyst, passing the mixture so formed through a heated reaction vessel constructed of an alloy containing nickel so that acetic acid is dehydrated to form ketene, separating the ketene from the water and unchanged acetic acid, and absorbing the ketene in glacial acetic acid to form acetic anhydride. The catalyst may be a volatile phosphorus-containing compound, and a volatile basic nitrogen compound may be added to the vapours leaving the reaction vessel (see Specifications 435,219 and 441,956). The sulphur compound is preferably carbon disulphide, but others specified are hydrogen sulphide, ethyl mercaptan, thioglycollic acid and allyl isothiocyanate. Specifications 305,147 and 313,418, [both in Class 2 (iii)], also are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1493548A GB643620A (en) | 1948-06-02 | 1948-06-02 | Improvements in and relating to the production of acetic anhydride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1493548A GB643620A (en) | 1948-06-02 | 1948-06-02 | Improvements in and relating to the production of acetic anhydride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB643620A true GB643620A (en) | 1950-09-20 |
Family
ID=10050136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1493548A Expired GB643620A (en) | 1948-06-02 | 1948-06-02 | Improvements in and relating to the production of acetic anhydride |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB643620A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006062558A1 (en) * | 2004-08-18 | 2006-06-15 | Celanese International Corporation | Acetate anhydride and acetate ester co-production |
-
1948
- 1948-06-02 GB GB1493548A patent/GB643620A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006062558A1 (en) * | 2004-08-18 | 2006-06-15 | Celanese International Corporation | Acetate anhydride and acetate ester co-production |
| CN101006041B (en) * | 2004-08-18 | 2011-01-05 | 塞拉尼斯国际公司 | Acetic anhydride and acetate ester co-production |
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