GB499398A - An improved manufacture of secondary alcohols from olefins - Google Patents
An improved manufacture of secondary alcohols from olefinsInfo
- Publication number
- GB499398A GB499398A GB14061/37A GB1406137A GB499398A GB 499398 A GB499398 A GB 499398A GB 14061/37 A GB14061/37 A GB 14061/37A GB 1406137 A GB1406137 A GB 1406137A GB 499398 A GB499398 A GB 499398A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tower
- pipe
- acid
- olefine
- secondary alcohols
- 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
- C07C29/03—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2
- C07C29/04—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds
- C07C29/05—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds with formation of absorption products in mineral acids and their hydrolysis
- C07C29/06—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds with formation of absorption products in mineral acids and their hydrolysis the acid being sulfuric acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
<PICT:0499398/IV/1> Secondary alcohols are made by treating a gaseous or liquid olefine with aqueous sulphuric acid of 1-84 per cent, removing the solution to another vessel, and, without adding water, distilling off the alcohol, using heat or live steam and then adjusting the acid to its original value by adding water if the distillation was effected without steam. The partial pressure of the olefine may be 2-200 lb. The olefine is passed into an absorption tower 1 containing the sulphuric acid, by a pipe 3 at a partial pressure of at least 2 lb. Oil layers may be maintained on the surface of the aqueous acid in the tower 1. The acid is admitted by a pipe 6 and flows downwardly. It then passes to a stripping-tower 8. The tower 1 may be maintained at 30-130 DEG C. and the tower 8 is heated by a coil 10 or by live steam from a pipe 11. Alcohol and some ether pass by a pipe 17 to a fractionating tower 18 and the ether separated is returned to the absorption tower 1. When live steam is not employed for the distillation, water is added at the pipe 6 to restore the original concentration of the acid. The invention is described with reference to the production of isopropyl alcohol. Specifications 408,224, 428,792, and 499,490 are referred to. The Specification as open to inspection under Sect. 91 is not limited to the production of secondary alcohols or to the use of aqueous sulphuric acid. Other catalysts mentioned are phosphoric, hydrochloric and acetic acids and salts such as zinc and aluminium chlorides. The process is not limited to the use of two separate chambers. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US499398XA | 1936-08-12 | 1936-08-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB499398A true GB499398A (en) | 1939-01-20 |
Family
ID=21962568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14061/37A Expired GB499398A (en) | 1936-08-12 | 1937-05-20 | An improved manufacture of secondary alcohols from olefins |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB499398A (en) |
-
1937
- 1937-05-20 GB GB14061/37A patent/GB499398A/en not_active Expired
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