GB312837A - Improvements in the recovery and purification of anthraquinone - Google Patents
Improvements in the recovery and purification of anthraquinoneInfo
- Publication number
- GB312837A GB312837A GB1882328A GB1882328A GB312837A GB 312837 A GB312837 A GB 312837A GB 1882328 A GB1882328 A GB 1882328A GB 1882328 A GB1882328 A GB 1882328A GB 312837 A GB312837 A GB 312837A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anthraquinone
- sulphonic
- superheated steam
- mercury
- current
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
312,837. Imperial Chemical Industries, Ltd., Davidson, A., Shepherdson, A., and Thomas, J. June 28, 1928. Anthraquinone. - The sulphonic acid byproducts formed in the manufacture of anthraquinone a-sulphonic acids are bydrolysed in dilute sulphuric acid solution in the presence of mercury salts while a passing current of superheated steam though the solution. The sulphonic acid groups in the a-position are split off to leave a mixture of anthraquinone and its #-sulphonic acids. In an example, sulphonated anthraquinone residues are heated to 180 C. in the presence of mercury and of sulphuric acid of 80 per cent strength and a current of superheated steam passing through removes the anthraquinone formed. Specification 200,851 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1882328A GB312837A (en) | 1928-06-28 | 1928-06-28 | Improvements in the recovery and purification of anthraquinone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1882328A GB312837A (en) | 1928-06-28 | 1928-06-28 | Improvements in the recovery and purification of anthraquinone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB312837A true GB312837A (en) | 1929-06-06 |
Family
ID=10119014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1882328A Expired GB312837A (en) | 1928-06-28 | 1928-06-28 | Improvements in the recovery and purification of anthraquinone |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB312837A (en) |
-
1928
- 1928-06-28 GB GB1882328A patent/GB312837A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB312837A (en) | Improvements in the recovery and purification of anthraquinone | |
| GB355697A (en) | Manufacture of acid wool dyestuffs of the anthraquinone series | |
| GB471653A (en) | Improved manufacture of sulphuric acid by the contact process | |
| GB643825A (en) | Recovery of fluosulfonic acid | |
| GB326022A (en) | Manufacture of sulphonic acids of 1-ªÏ-amino methylnaphthalene | |
| GB551789A (en) | Process for preparing hydrobromic acid | |
| GB289097A (en) | Improvements in and relating to the manufacture of 1-aminoanthraquinone-2-sulphonic acid | |
| GB205254A (en) | Improved process for the manufacture of dichlor fluorane | |
| CH102539A (en) | New process of preparation of the acid H (aminonaftoldisulfonic 1.3.6.8.). | |
| GB386997A (en) | Improved manufacture of anthraquinone derivatives | |
| GB252922A (en) | Improvements in the manufacture of anthraquinone derivatives | |
| GB285488A (en) | Process for the manufacture of aniline-2:5-disulphonic acid | |
| GB485805A (en) | Improved concentrated casein solutions having an acid reaction | |
| GB291965A (en) | Manufacture of naphthalene derivatives | |
| GB283822A (en) | A process for the manufacture of 2-phenylquinoline-4-carboxylic acid | |
| GB421831A (en) | The manufacture of pure 1-amino-2.3-dimethylanthraquinone | |
| GB308049A (en) | Improvements in the manufacture of anthraquinone derivatives | |
| GB546670A (en) | Acid recovery process | |
| FR723484A (en) | Process for the continuous cycle use of sulfuric acid pickling liquors with recovery of free sulfuric acid from the final pickling solutions | |
| GB276408A (en) | The manufacture of new products of the anthraquinone series | |
| GB494326A (en) | Anthraquinone derivatives and their manufacture | |
| GB186515A (en) | The manufacture of 1.4-naphthol sulphonic acid | |
| FR590792A (en) | Contact manufacturing process for sulfuric acid | |
| GB229719A (en) | Improvements relating to the production of anthraquinone sulphonic acids | |
| GB462337A (en) | Manufacture of 2:6-dimethylnapththalene-7-sulphonic acid |