GB507860A - Manufacture of diphenylamine - Google Patents
Manufacture of diphenylamineInfo
- Publication number
- GB507860A GB507860A GB107238A GB107238A GB507860A GB 507860 A GB507860 A GB 507860A GB 107238 A GB107238 A GB 107238A GB 107238 A GB107238 A GB 107238A GB 507860 A GB507860 A GB 507860A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- reaction
- diphenylamine
- copper
- sphere
- 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
Abstract
507,860. Diphenylamine. SOC. DES USINES CHIMIQUES RHONE-POULENC, and SCRIABINE, I. Jan. 12, 1938, No. 1072. [Class 2 (iii)] Diphenylamine is prepared by reacting chloro benzene or an alkali benzene sulphonate with aniline in the presence of caustic alkali and removing the eliminated water as fast as it is formed. The presence of a small quantity of copper, and/or copper oxide and/or copper salt favours the reaction. The removal of the water from the sphere of reaction may be effected by the use of a "carrier liquid" to form an azeotropic mixture with the water; the water carried away is separated by means of a suitable device and the "carrier liquid" is returned to the reaction. One of the reagents may be used in excess for this purpose. Xylene is also specified as being suitable. Alternatively, the eliminated water can be removed from the reaction sphere by fixing it with, for example, quicklime. Examples are given.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB107238A GB507860A (en) | 1938-01-12 | 1938-01-12 | Manufacture of diphenylamine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB107238A GB507860A (en) | 1938-01-12 | 1938-01-12 | Manufacture of diphenylamine |
Publications (1)
Publication Number | Publication Date |
---|---|
GB507860A true GB507860A (en) | 1939-06-22 |
Family
ID=9715686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB107238A Expired GB507860A (en) | 1938-01-12 | 1938-01-12 | Manufacture of diphenylamine |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB507860A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2476170A (en) * | 1945-07-16 | 1949-07-12 | Dow Chemical Co | Manufacture of diphenylamine |
DE1025417B (en) * | 1955-06-07 | 1958-03-06 | Basf Ag | Process for the preparation of tertiary amines |
US3155727A (en) * | 1960-07-25 | 1964-11-03 | Goodyear Tire & Rubber | Reaction of aromatic amines with para halo nitrobenzenes using copper cyanide condensation catalyst |
US3313854A (en) * | 1961-11-20 | 1967-04-11 | Universal Oil Prod Co | Preparation of para-nitrodiphenylamines utilizing a copper oxide catalyst |
US4764625A (en) * | 1980-12-12 | 1988-08-16 | Xerox Corporation | Process for preparing arylamines |
-
1938
- 1938-01-12 GB GB107238A patent/GB507860A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2476170A (en) * | 1945-07-16 | 1949-07-12 | Dow Chemical Co | Manufacture of diphenylamine |
DE1025417B (en) * | 1955-06-07 | 1958-03-06 | Basf Ag | Process for the preparation of tertiary amines |
US3155727A (en) * | 1960-07-25 | 1964-11-03 | Goodyear Tire & Rubber | Reaction of aromatic amines with para halo nitrobenzenes using copper cyanide condensation catalyst |
US3313854A (en) * | 1961-11-20 | 1967-04-11 | Universal Oil Prod Co | Preparation of para-nitrodiphenylamines utilizing a copper oxide catalyst |
US4764625A (en) * | 1980-12-12 | 1988-08-16 | Xerox Corporation | Process for preparing arylamines |
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