GB1283738A - Method for separation of isobutyl and n-butyl alcohols from a mixture of oxo-synthesis products - Google Patents
Method for separation of isobutyl and n-butyl alcohols from a mixture of oxo-synthesis productsInfo
- Publication number
- GB1283738A GB1283738A GB40584/69A GB4058469A GB1283738A GB 1283738 A GB1283738 A GB 1283738A GB 40584/69 A GB40584/69 A GB 40584/69A GB 4058469 A GB4058469 A GB 4058469A GB 1283738 A GB1283738 A GB 1283738A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- isobutyl
- rectification
- butyl
- distillate
- 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
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1283738 Butyl alcohols V M OLEVSKY and J A GROMOGLASOV 14 Aug 1969 40584/69 Heading C2C A method of separating isobutyl and n - butyl alcohols from a mixture of oxo-synthesis products comprises: (a) subjecting the mixture to rectification in the presence of water contained in the mixture to obtain a still liquor containing isobutyl and n-butyl alcohols, high boiling-point by-products of the oxo-synthesis and dibutyl ether, and collecting at a temperature of from 84‹ to 87‹ C. a distillate containing water, butyric aldehydes, isobutyl and butyl-isobutyl ethers and up to 25% of isobutyl alcohol; (b) subjecting to rectification the still liquor obtained in step (a) first at atmospheric pressure and at a temperature of up to 160‹ C. to obtain a mixture of butyl alcohols and dibutyl ethers and then under vacuum to separate a mixture of the high boiling point by-products; (c) subjecting to rectification the mixture of butyl alcohols and dibutyl ethers obtained in step (b) to obtain a distillate containing isobutyl alcohol and a still bottoms containing n-butyl alcohol and dibutyl ether, and separating isobutyl alcohol from the said distillate; and (d) subjecting the still bottoms to rectification in the presence of water separated from the mixture of oxo-synthesis products in step (a) in order to isolate n-butyl alcohol and collect at a temperature of from 90‹ to 92‹ C. a distillate composed of n-butyl alcohol, dibutyl ether and water. The rectification of step (a) is preferably effected with concomitant reflux with a portion of the organic and aqueous layers resulting from the separation into layers of the distillate collected at a temperature of from 84‹ to 87‹ C. Separation of the mixture of high boiling-point byproducts obtained in step (b) is preferably carried out by vacuum fractionation at a residual pressure of not greater than 200 mm Hg. The rectification of the still bottoms obtained in step (c) is preferably carried out while feeding as reflux a portion of the aqueous layer obtained as a result of rectifying the stock mixture of oxosynthesis products in step (a) and also while feeding the entire aqueous layer and a portion of the organic layer from the distillate obtained by rectification of said still bottoms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB40584/69A GB1283738A (en) | 1969-08-14 | 1969-08-14 | Method for separation of isobutyl and n-butyl alcohols from a mixture of oxo-synthesis products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB40584/69A GB1283738A (en) | 1969-08-14 | 1969-08-14 | Method for separation of isobutyl and n-butyl alcohols from a mixture of oxo-synthesis products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1283738A true GB1283738A (en) | 1972-08-02 |
Family
ID=10415623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB40584/69A Expired GB1283738A (en) | 1969-08-14 | 1969-08-14 | Method for separation of isobutyl and n-butyl alcohols from a mixture of oxo-synthesis products |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1283738A (en) |
-
1969
- 1969-08-14 GB GB40584/69A patent/GB1283738A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |