GB1547760A - Control of continuos diazotisation of aromatic amines - Google Patents

Control of continuos diazotisation of aromatic amines

Info

Publication number
GB1547760A
GB1547760A GB33614/75A GB3361475A GB1547760A GB 1547760 A GB1547760 A GB 1547760A GB 33614/75 A GB33614/75 A GB 33614/75A GB 3361475 A GB3361475 A GB 3361475A GB 1547760 A GB1547760 A GB 1547760A
Authority
GB
United Kingdom
Prior art keywords
diazotisation
aromatic amines
continuos
control
tetrazotisation
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
Application number
GB33614/75A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
Ciba Geigy 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
Application filed by Ciba Geigy AG filed Critical Ciba Geigy AG
Priority to GB33614/75A priority Critical patent/GB1547760A/en
Priority to DE19762635778 priority patent/DE2635778A1/en
Priority to CH1013176A priority patent/CH623029A5/en
Priority to CA258,829A priority patent/CA1075682A/en
Priority to SE7608970A priority patent/SE7608970L/en
Priority to IT7626221A priority patent/IT1065121B/en
Priority to DK363176A priority patent/DK363176A/en
Priority to FR7624490A priority patent/FR2320937A1/en
Priority to JP51096591A priority patent/JPS5227725A/en
Publication of GB1547760A publication Critical patent/GB1547760A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C245/00—Compounds containing chains of at least two nitrogen atoms with at least one nitrogen-to-nitrogen multiple bond
    • C07C245/20—Diazonium compounds
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
    • G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric means

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

In an automatically controlled continuous process for diazotisation and tetrazotisation of aromatic amines, the metering of the inorganic nitrite to be fed in is adjusted polarovoltaically.
GB33614/75A 1975-08-12 1975-08-12 Control of continuos diazotisation of aromatic amines Expired GB1547760A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB33614/75A GB1547760A (en) 1975-08-12 1975-08-12 Control of continuos diazotisation of aromatic amines
DE19762635778 DE2635778A1 (en) 1975-08-12 1976-08-09 CONTROL OF CHEMICAL REACTIONS
CH1013176A CH623029A5 (en) 1975-08-12 1976-08-09 Process for preparing aromatic diazo compounds
CA258,829A CA1075682A (en) 1975-08-12 1976-08-10 Control of chemical reaction
SE7608970A SE7608970L (en) 1975-08-12 1976-08-11 CONTROL OF CHEMICAL REACTION
IT7626221A IT1065121B (en) 1975-08-12 1976-08-11 CONTROL OF A CHEMICAL REACTION
DK363176A DK363176A (en) 1975-08-12 1976-08-11 AUTOMATICALLY CONTROLLED CONTINUOUS PROCESS FOR DIAZOTING OR TETRAZOTING OF AROMATIC AMINES
FR7624490A FR2320937A1 (en) 1975-08-12 1976-08-11 AUTOMATIC ADJUSTMENT OF CHEMICAL REACTIONS, IN PARTICULAR DIAZOTATIONS
JP51096591A JPS5227725A (en) 1975-08-12 1976-08-12 Automatically controlled continuous diazoation or tetrazoation of aromatic amines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33614/75A GB1547760A (en) 1975-08-12 1975-08-12 Control of continuos diazotisation of aromatic amines

Publications (1)

Publication Number Publication Date
GB1547760A true GB1547760A (en) 1979-06-27

Family

ID=10355210

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33614/75A Expired GB1547760A (en) 1975-08-12 1975-08-12 Control of continuos diazotisation of aromatic amines

Country Status (9)

Country Link
JP (1) JPS5227725A (en)
CA (1) CA1075682A (en)
CH (1) CH623029A5 (en)
DE (1) DE2635778A1 (en)
DK (1) DK363176A (en)
FR (1) FR2320937A1 (en)
GB (1) GB1547760A (en)
IT (1) IT1065121B (en)
SE (1) SE7608970L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2741925A1 (en) * 1977-09-17 1979-03-29 Bayer Ag PROCESS FOR CONTINUOUS INDIRECT DIAZOTATION OF AROMATIC AMINES
DE2960465D1 (en) * 1978-02-14 1981-10-22 Ici Plc Process for the diazotisation of amines
DE2825655A1 (en) * 1978-06-12 1979-12-20 Hoechst Ag METHOD OF CONTINUOUS DIAZOTATION OF AMINES
DE3104375A1 (en) * 1981-02-07 1982-08-19 Hoechst Ag, 6000 Frankfurt METHOD FOR CONTROLLING DIAZOTING REACTIONS
US4845638A (en) * 1985-07-15 1989-07-04 Ciba-Geigy Corporation Method of eliminating excess nitrite in diazotisation solutions

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE551798A (en) * 1954-08-26

Also Published As

Publication number Publication date
FR2320937A1 (en) 1977-03-11
JPS5227725A (en) 1977-03-02
SE7608970L (en) 1977-02-13
IT1065121B (en) 1985-02-25
DE2635778C2 (en) 1987-08-27
JPS6210222B2 (en) 1987-03-05
DK363176A (en) 1977-02-13
CH623029A5 (en) 1981-05-15
DE2635778A1 (en) 1977-02-24
CA1075682A (en) 1980-04-15
FR2320937B1 (en) 1978-05-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950806