GB566328A - Improvements in or relating to the purification of acetaldol by distillation - Google Patents
Improvements in or relating to the purification of acetaldol by distillationInfo
- Publication number
- GB566328A GB566328A GB3042/43A GB304243A GB566328A GB 566328 A GB566328 A GB 566328A GB 3042/43 A GB3042/43 A GB 3042/43A GB 304243 A GB304243 A GB 304243A GB 566328 A GB566328 A GB 566328A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acetaldol
- column
- acetaldehyde
- vapours
- temperature
- 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
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/783—Separation; Purification; Stabilisation; Use of additives by gas-liquid treatment, e.g. by gas-liquid absorption
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C45/82—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
566,328. Distilling acetaldol. DISTILLERS CO., Ltd., TUERCK, K. H. W., and LICHTENSTEIN, H. J. Feb. 24, 1943, No. 3042. [Class 32] Pure acetaldol is obtained from mixtures containing it, e.g. crude acetaldol obtained by the condensation of acetaldehyde with alkali which contains free acetaldehyde and polymerized products, by leading the mixture into a fractionating column in counter-current to the vapours of a normally liquid hydrocarbon which is immiscible with acetaldol and has a boiling point between 170 and 300 C., maintaining the pressure in the column such that the temperature at the top thereof is not more than 90 C., condensing the distillate and separating the acetaldol layer from the hydrocarbon layer. Acetaldol containing 20 per cent acetaldehyde was introduced at the top of a column through which vapours of dodecane were passed upwardly. The temperature at the top of the column was maintained at 75 C. and the pressure was about 25 mm. of mercury.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3042/43A GB566328A (en) | 1943-02-24 | 1943-02-24 | Improvements in or relating to the purification of acetaldol by distillation |
US525232A US2368904A (en) | 1943-02-24 | 1944-03-06 | Purification of acetaldol by distillation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3042/43A GB566328A (en) | 1943-02-24 | 1943-02-24 | Improvements in or relating to the purification of acetaldol by distillation |
Publications (1)
Publication Number | Publication Date |
---|---|
GB566328A true GB566328A (en) | 1944-12-22 |
Family
ID=9750846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3042/43A Expired GB566328A (en) | 1943-02-24 | 1943-02-24 | Improvements in or relating to the purification of acetaldol by distillation |
Country Status (2)
Country | Link |
---|---|
US (1) | US2368904A (en) |
GB (1) | GB566328A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2452797A (en) * | 1944-05-29 | 1948-11-02 | Us Ind Chemicals Inc | Stripping of acetaldehyde from aldol by hydrocarbon vapors |
NL130614C (en) * | 1958-11-27 |
-
1943
- 1943-02-24 GB GB3042/43A patent/GB566328A/en not_active Expired
-
1944
- 1944-03-06 US US525232A patent/US2368904A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US2368904A (en) | 1945-02-06 |
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