HU178508B - Process and equipment for preparing hydrazobenzene - Google Patents
Process and equipment for preparing hydrazobenzeneInfo
- Publication number
- HU178508B HU178508B HUDI000294A HU178508B HU 178508 B HU178508 B HU 178508B HU DI000294 A HUDI000294 A HU DI000294A HU 178508 B HU178508 B HU 178508B
- Authority
- HU
- Hungary
- Prior art keywords
- reactor
- hydrazobenzene
- alkali metal
- hydrogenation
- preparing
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C241/00—Preparation of compounds containing chains of nitrogen atoms singly-bound to each other, e.g. hydrazines, triazanes
- C07C241/02—Preparation of hydrazines
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C243/00—Compounds containing chains of nitrogen atoms singly-bound to each other, e.g. hydrazines, triazanes
- C07C243/10—Hydrazines
- C07C243/22—Hydrazines having nitrogen atoms of hydrazine groups bound to carbon atoms of six-membered aromatic rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
The preparation of hydrazobenzene by a catalytic alkaline hydrogenation of nitrobenzene with water vapour in alcoholic solution is effected using an alkali that is an alkali metal alcoholate (alkoxide) and/or an alkali metal hydroxide, hydrogenation pressures of >/= 1 bar and temperatures of up to 120 DEG C, and keeping the reaction mixture in turbulent agitation. Industrial practice is by means of an apparatus comprising a temperature controllable reactor and a pump-equipped recirculation loop emanating from the reactor in the region of the liquid column and ending in nozzles which disperse the reacting material finely into the gas space of the reactor.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762634862 DE2634862C2 (en) | 1976-08-03 | 1976-08-03 | Process for the preparation of hydrazobenzene |
DE19762634861 DE2634861C2 (en) | 1976-08-03 | 1976-08-03 | Process for the preparation of hydrazobenzene |
DE19772708914 DE2708914C2 (en) | 1977-03-02 | 1977-03-02 | Process and apparatus for producing hydrazobenzene |
Publications (1)
Publication Number | Publication Date |
---|---|
HU178508B true HU178508B (en) | 1982-05-28 |
Family
ID=27186938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HUDI000294 HU178508B (en) | 1976-08-03 | 1977-08-01 | Process and equipment for preparing hydrazobenzene |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS5318522A (en) |
CH (1) | CH629752A5 (en) |
CS (1) | CS204007B2 (en) |
ES (2) | ES461272A1 (en) |
FR (1) | FR2360563A1 (en) |
GB (1) | GB1560004A (en) |
HU (1) | HU178508B (en) |
IT (1) | IT1115946B (en) |
NL (1) | NL7708542A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2833605A1 (en) * | 1978-07-31 | 1980-02-14 | Dynamit Nobel Ag | METHOD FOR PRODUCING HYDRAZOBENZOLS BY CATALYTIC HYDRATION OF NITROBENZOLES |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3063980A (en) * | 1957-07-09 | 1962-11-13 | Gen Aniline & Film Corp | Process for reducing aromatic nitrogen compounds |
-
1977
- 1977-07-28 GB GB3185877A patent/GB1560004A/en not_active Expired
- 1977-08-01 HU HUDI000294 patent/HU178508B/en unknown
- 1977-08-01 IT IT5052577A patent/IT1115946B/en active
- 1977-08-02 CH CH949177A patent/CH629752A5/en not_active IP Right Cessation
- 1977-08-02 JP JP9291777A patent/JPS5318522A/en active Pending
- 1977-08-02 NL NL7708542A patent/NL7708542A/en not_active Application Discontinuation
- 1977-08-02 CS CS511777A patent/CS204007B2/en unknown
- 1977-08-02 FR FR7723808A patent/FR2360563A1/en active Granted
- 1977-08-03 ES ES461272A patent/ES461272A1/en not_active Expired
-
1978
- 1978-06-14 ES ES470767A patent/ES470767A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT1115946B (en) | 1986-02-10 |
ES461272A1 (en) | 1978-10-01 |
FR2360563A1 (en) | 1978-03-03 |
FR2360563B1 (en) | 1983-09-09 |
CH629752A5 (en) | 1982-05-14 |
GB1560004A (en) | 1980-01-30 |
NL7708542A (en) | 1978-02-07 |
CS204007B2 (en) | 1981-03-31 |
ES470767A1 (en) | 1979-02-01 |
JPS5318522A (en) | 1978-02-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
HU90 | Patent valid on 900628 |