GB678192A - Improvements relating to the production of phenols - Google Patents
Improvements relating to the production of phenolsInfo
- Publication number
- GB678192A GB678192A GB22638/50A GB2263850A GB678192A GB 678192 A GB678192 A GB 678192A GB 22638/50 A GB22638/50 A GB 22638/50A GB 2263850 A GB2263850 A GB 2263850A GB 678192 A GB678192 A GB 678192A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenols
- density
- crude
- production
- improvements 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
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/005—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by obtaining phenols from products, waste products or side-products of processes, not directed to the production of phenols, by conversion or working-up
- C07C37/007—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by obtaining phenols from products, waste products or side-products of processes, not directed to the production of phenols, by conversion or working-up from the tar industry
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Crude phenolate solutions obtained from low temperature tars and having a density of 1.14-1.15/20 DEG C. are treated with steam to expel the volatile neutral oils and then with a stream of air in small bubbles at about 105 DEG C. until at least 15 per cent of water has been distilled off and the density has increased to 1.22/20 DEG C. Thus the amphoteric impurities are transformed into neutral bodies and when the free phenols are liberated with carbon dioxide they are soluble to a clear solution in dilute alkali hydroxide solutions. The process is particularly applicable to phenols derived from lignite and extracted in the crude form by the usual methods.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS678192X | 1949-09-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB678192A true GB678192A (en) | 1952-08-27 |
Family
ID=5454700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22638/50A Expired GB678192A (en) | 1949-09-15 | 1950-09-14 | Improvements relating to the production of phenols |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB678192A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1094758B (en) * | 1957-07-24 | 1960-12-15 | Metallgesellschaft Ag | Process for the production of neutral oil-free and lightfast phenols from phenol-containing oils or crude phenols |
| US3036135A (en) * | 1957-03-20 | 1962-05-22 | Kermit M Bleese | Treatment of primary tar acid compounds |
-
1950
- 1950-09-14 GB GB22638/50A patent/GB678192A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3036135A (en) * | 1957-03-20 | 1962-05-22 | Kermit M Bleese | Treatment of primary tar acid compounds |
| DE1094758B (en) * | 1957-07-24 | 1960-12-15 | Metallgesellschaft Ag | Process for the production of neutral oil-free and lightfast phenols from phenol-containing oils or crude phenols |
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