GB121455A - Process for the Production of High Percentage Carbazole. - Google Patents
Process for the Production of High Percentage Carbazole.Info
- Publication number
- GB121455A GB121455A GB16291/18A GB1629118A GB121455A GB 121455 A GB121455 A GB 121455A GB 16291/18 A GB16291/18 A GB 16291/18A GB 1629118 A GB1629118 A GB 1629118A GB 121455 A GB121455 A GB 121455A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbazole
- phenol
- crude
- production
- anthracene
- 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
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/56—Ring systems containing three or more rings
- C07D209/80—[b, c]- or [b, d]-condensed
- C07D209/82—Carbazoles; Hydrogenated carbazoles
- C07D209/84—Separation, e.g. from tar; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Indole Compounds (AREA)
Abstract
121,455. Soc. d'Eclairage Chauffage et Force Motrice. Dec. 4, 1917, [Convention date]. Carbazole.-Crude carbazole is purified by dissolving it in a phenol (phenol, cresols, xylenols) and crystallizing out. The crystals are washed with a phenol and the process repeated, giving a product of 90 per cent purity. The process may be applied to the crude carbazole contained in the pyridme solutions from the purification of anthracene by pyridine, or to the crude carbazole obtained by decomposing potassium carbazole prouuced in purifying anthracene by caustic potash.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR121455X | 1917-12-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB121455A true GB121455A (en) | 1919-10-07 |
Family
ID=32669426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16291/18A Expired GB121455A (en) | 1917-12-04 | 1918-10-07 | Process for the Production of High Percentage Carbazole. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB121455A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6225721B1 (en) | 1998-12-23 | 2001-05-01 | Pwb-Ruhlatec Industrieprodukte Gmbh | Self-centering timing disk hub and method of mounting the same |
-
1918
- 1918-10-07 GB GB16291/18A patent/GB121455A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6225721B1 (en) | 1998-12-23 | 2001-05-01 | Pwb-Ruhlatec Industrieprodukte Gmbh | Self-centering timing disk hub and method of mounting the same |
US6384501B2 (en) | 1998-12-23 | 2002-05-07 | Pwb-Ruhlatec Industrieprodukte Gmbh | Self-centering timing disk hub and method of mounting the same |
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