CH196345A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH196345A
CH196345A CH196345DA CH196345A CH 196345 A CH196345 A CH 196345A CH 196345D A CH196345D A CH 196345DA CH 196345 A CH196345 A CH 196345A
Authority
CH
Switzerland
Prior art keywords
azo dye
amino
preparation
dye
cyanobenzene
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH196345A publication Critical patent/CH196345A/en

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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/16—Naphthol-sulfonic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines     Azofar        bstoffes.       Es wurde gefunden, dass man einen     Azo-          färbstoff    erhält,     wenn    man     diazotiertes     1-     Amino    - 4 -     cyanbenzol    - 2 -     methylsulfon    in  saurem Medium mit     1-Amino-5-oxynaphtha-          lin-2-sulfonsäure    vereinigt.  



  Der demgemäss erhaltene Farbstoff bildet  in Form seines     Natriumsalzes    in trockenem  Zustand ein dunkles Pulver, das sich in  Wasser mit blauer Farbe löst und Wolle aus  saurem Bade in echten blauen Tönen färbt.         Beispiel:       <B>19,6</B> Teile     1-Amino    - 4 -     cyanbenzol    - 2 -     me-          thylsulfon    werden nach gebräuchlichen Me  thoden     diazotiert    und die saure     Diazolösung     mit einer neutralen Lösung des     Natriumsalzes     aus     28,

  9-        Teilen    1-Amino-5-Qxynaphthalin-2--         sulfonsäure    versetzt. Der Farbstoff, fällt aus  oder kann durch Zugabe von neutralisieren  den und     aussalzenden    Mitteln abgeschieden  werden.



  Process for the production of an azo dye. It has been found that an azo dye is obtained when diazotized 1-amino-4-cyanobenzene-2-methylsulfone is combined with 1-amino-5-oxynaphthalin-2-sulfonic acid in an acidic medium.



  The dyestuff thus obtained forms, in the dry state, a dark powder in the form of its sodium salt, which dissolves in water with a blue color and dyes wool from an acid bath in true blue tones. Example: <B> 19.6 </B> parts of 1-amino - 4 - cyanobenzene - 2 - methylsulfone are diazotized according to customary methods and the acidic diazo solution with a neutral solution of the sodium salt from 28,

  9 parts of 1-amino-5-xynaphthalene-2-sulfonic acid are added. The dye precipitates or can be deposited by adding neutralizing and salting agents.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man diazotiertes 1-Amino-4-cyanbenzol-2-methyl- sulfon in saurem Medium mit 1-Amino-5-oxy- naphthalin-2-sulfonsäure vereinigt. Der demgemäss erhaltene Farbstoff bildet in Form seines Natriumsalzes in trockenem Zustand ein dunkles Pulver, das sich in Was ser mit blauer Farbe löst und Wolle aus saurem Bade in echten blauen Tönen färbt. PATENT CLAIM: Process for the production of an azo dye, characterized in that diazotized 1-amino-4-cyanobenzene-2-methyl-sulfone is combined with 1-amino-5-oxynaphthalene-2-sulfonic acid in an acidic medium. The dye thus obtained forms a dark powder in the dry state in the form of its sodium salt, which dissolves in water with a blue color and dyes wool from an acid bath in real blue tones.
CH196345D 1936-12-31 1936-12-31 Process for the preparation of an azo dye. CH196345A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH196345T 1936-12-31

Publications (1)

Publication Number Publication Date
CH196345A true CH196345A (en) 1938-03-15

Family

ID=4440330

Family Applications (1)

Application Number Title Priority Date Filing Date
CH196345D CH196345A (en) 1936-12-31 1936-12-31 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH196345A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4618674A (en) * 1983-12-30 1986-10-21 Dellian Kurt A Red-1-(cyanophenylazo- or cyano, halophenylazo)-2-amino-8-hydroxynaphthalene-6 sulfonic acid dyestuffs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4618674A (en) * 1983-12-30 1986-10-21 Dellian Kurt A Red-1-(cyanophenylazo- or cyano, halophenylazo)-2-amino-8-hydroxynaphthalene-6 sulfonic acid dyestuffs

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