HU178508B - Process and equipment for preparing hydrazobenzene - Google Patents

Process and equipment for preparing hydrazobenzene

Info

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
Application number
Other languages
Hungarian (hu)
Inventor
Otto Ackermann
Otto Bleh
Paul Bonsels
Ulrich Neff
Bernd-Lutz Petermann
Rudolf Stephan
Original Assignee
Dynamit Nobel Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19762634862 external-priority patent/DE2634862C2/en
Priority claimed from DE19762634861 external-priority patent/DE2634861C2/en
Priority claimed from DE19772708914 external-priority patent/DE2708914C2/en
Application filed by Dynamit Nobel Ag filed Critical Dynamit Nobel Ag
Publication of HU178508B publication Critical patent/HU178508B/en

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.
HUDI000294 1976-08-03 1977-08-01 Process and equipment for preparing hydrazobenzene HU178508B (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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