GB471952A - Improvements in and relating to the manufacture of acetone cyanhydrin - Google Patents
Improvements in and relating to the manufacture of acetone cyanhydrinInfo
- Publication number
- GB471952A GB471952A GB17843/36A GB1784336A GB471952A GB 471952 A GB471952 A GB 471952A GB 17843/36 A GB17843/36 A GB 17843/36A GB 1784336 A GB1784336 A GB 1784336A GB 471952 A GB471952 A GB 471952A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acetone
- hydrocyanic acid
- gaseous
- temperature
- relating
- 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
- C07C255/00—Carboxylic acid nitriles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Acetone cyanhydrin is produced by adding gradually gaseous or liquid hydrocyanic acid to acetone in the presence of an alkaline catalyst, the temperature of the reaction mixture being maintained below the boiling-point of the solution. The basic substance should preferably be in low concentration such as 0,5 to 5 per cent in the water in which it is dissolved. In examples, (1) gaseous hydrocyanic acid is introduced into acetone containing a little normal caustic soda solution at room temperature; the temperature rises to 30--35 DEG C. and the mixture is then cooled to prevent further rise; (3) the crude product is heated to 60 DEG C. and an inert gas such as air is passed through to remove remaining traces of free hydrocyanic acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE471952X | 1935-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB471952A true GB471952A (en) | 1937-09-14 |
Family
ID=6541344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17843/36A Expired GB471952A (en) | 1935-06-28 | 1936-06-26 | Improvements in and relating to the manufacture of acetone cyanhydrin |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE416221A (en) |
| FR (1) | FR812366A (en) |
| GB (1) | GB471952A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3700718A (en) * | 1969-11-24 | 1972-10-24 | Sumitomo Chemical Co | Method for continuous production of pure acetone cyanohydrin |
| US4130580A (en) * | 1977-11-03 | 1978-12-19 | Rohm And Haas Company | Sodium ion removal from acetone cyanohydrin |
| EP1371632A1 (en) * | 2002-06-14 | 2003-12-17 | Rohm And Haas Company | Process for producing acetone cyanohydrin |
-
0
- BE BE416221D patent/BE416221A/xx unknown
-
1936
- 1936-06-26 GB GB17843/36A patent/GB471952A/en not_active Expired
- 1936-06-27 FR FR812366D patent/FR812366A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3700718A (en) * | 1969-11-24 | 1972-10-24 | Sumitomo Chemical Co | Method for continuous production of pure acetone cyanohydrin |
| US4130580A (en) * | 1977-11-03 | 1978-12-19 | Rohm And Haas Company | Sodium ion removal from acetone cyanohydrin |
| EP1371632A1 (en) * | 2002-06-14 | 2003-12-17 | Rohm And Haas Company | Process for producing acetone cyanohydrin |
| SG124256A1 (en) * | 2002-06-14 | 2006-08-30 | Rohm & Haas | Improved process for producing acetone cyanohydrin |
Also Published As
| Publication number | Publication date |
|---|---|
| BE416221A (en) | |
| FR812366A (en) | 1937-05-08 |
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