GB1254727A - Process for the manufacture of azo dyestuffs with heterocylic diazo components - Google Patents

Process for the manufacture of azo dyestuffs with heterocylic diazo components

Info

Publication number
GB1254727A
GB1254727A GB566169A GB566169A GB1254727A GB 1254727 A GB1254727 A GB 1254727A GB 566169 A GB566169 A GB 566169A GB 566169 A GB566169 A GB 566169A GB 1254727 A GB1254727 A GB 1254727A
Authority
GB
United Kingdom
Prior art keywords
heterocylic
manufacture
acid
azo dyestuffs
diazo components
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
GB566169A
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
Priority claimed from CH238068A external-priority patent/CH488779A/en
Application filed by Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of GB1254727A publication Critical patent/GB1254727A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B41/00—Special methods of performing the coupling reaction
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B27/00—Preparations in which the azo group is formed in any way other than by diazotising and coupling, e.g. oxidation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nitrogen- Or Sulfur-Containing Heterocyclic Ring Compounds With Rings Of Six Or More Members (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Abstract

1,254,727. Preparation of azodyes. CIBAGEIGY Ltd. 3 Feb., 1969 [19 Feb., 1968; 29 Nov., 1968], No. 5661/69. Heading C4P. Azo dyes are prepared by reacting an N- nitroso compound of a primary heterocyclic amine with a coupling component in an organic acid or diluted mineral acid medium. Preferably the nitrosamine is first prepared by adding sodium nitrite to a solution of the amine in the acid (e.g. formic acid) and the coupling component, preferably in solution, added to the slurry of nitrosamine and the mixture heated to form the dye. In examples the preparation of mono- and dis-azo dyes is described.
GB566169A 1968-02-19 1969-02-03 Process for the manufacture of azo dyestuffs with heterocylic diazo components Expired GB1254727A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH238068A CH488779A (en) 1968-02-19 1968-02-19 Process for the preparation of azo compounds with heterocyclic diazo components
CH1779768 1968-11-29

Publications (1)

Publication Number Publication Date
GB1254727A true GB1254727A (en) 1971-11-24

Family

ID=25690299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB566169A Expired GB1254727A (en) 1968-02-19 1969-02-03 Process for the manufacture of azo dyestuffs with heterocylic diazo components

Country Status (7)

Country Link
BE (1) BE728583A (en)
DE (1) DE1906838C3 (en)
ES (1) ES363764A1 (en)
FR (1) FR2002135A1 (en)
GB (1) GB1254727A (en)
NL (1) NL6902532A (en)
PL (1) PL76044B1 (en)

Also Published As

Publication number Publication date
FR2002135B1 (en) 1975-11-28
PL76044B1 (en) 1975-02-28
NL6902532A (en) 1969-08-21
FR2002135A1 (en) 1969-10-17
DE1906838C3 (en) 1978-04-06
ES363764A1 (en) 1970-12-16
DE1906838A1 (en) 1969-09-18
BE728583A (en) 1969-08-18
DE1906838B2 (en) 1977-07-28

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