CH267295A - Process for the preparation of an acidic disazo dye. - Google Patents

Process for the preparation of an acidic disazo dye.

Info

Publication number
CH267295A
CH267295A CH267295DA CH267295A CH 267295 A CH267295 A CH 267295A CH 267295D A CH267295D A CH 267295DA CH 267295 A CH267295 A CH 267295A
Authority
CH
Switzerland
Prior art keywords
dye
acidic
sulfonic acid
blue
preparation
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Sandoz
Original Assignee
Ag Sandoz
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 Ag Sandoz filed Critical Ag Sandoz
Publication of CH267295A publication Critical patent/CH267295A/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
    • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/02—Disazo dyes
    • C09B31/08—Disazo dyes from a coupling component "C" containing directive hydroxyl and amino groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 263651.    Verfahren zur Herstellung eines sauren     Disazofarhstoffes.       Es wurde     gefunden,    dass man zu einem  neuen, wertvollen sauren     Disazofarbstoff        0.e-          langt,    wenn man     diazotiertes        p-Tertiä,r-Amyl-          anilin    alkalisch auf     1-Amino-3-        (4'-methyl)-          plienylsulfoylaminobenzol-6-sulfonsäure    kup  pelt,

   den erhaltenen     111onoazofa.rbstoff    in der       Sulfoylatninogrttppe        metliyliert,        weiterdiazo-          tiert.    und die     Diazoverbindung    des     Aminoazo-          farbstoffes    in saurem     Medium    mit 2     --lethyl-          amitio-8-oxynaphthaiin-6-stilfonsäure    ver  einigt.  



       Beispiel;     16,3 Teile     p-Tertiär-Amylanilin    werden     di-          azotiert        und    die     Diazolösung    mit der     soda-          alkalischen    Lösung von 34,2 Teilen     1-Amino-          3    -     (4'-inetltyl)    -     phenylsulfoylaminobenzol-6-sul-          fonsäure    vereinigt.

   Nach beendeter Kupplung  wird der     Aminoazofarbstoff    abgetrennt, in  Wasser mittels 80 Teilen     301/oiger    Natron-    lauge gelöst und bei gewöhnlicher Tempera  tur mit 20 Teilen     Dimeth5-lsulfat    behandelt,  bis der ausschliesslich in der substituierten       Aminogruppe        methylierte    Farbstoff ausge  schieden ist.

   Er wird in Wasser angerührt  und bei etwa 50 mit 7 Teilen     Natriumnitrit     und 35 Teilen konzentrierter Salzsäure     diazo-          tiert,    die     Diazoverbindung        abfiltriert    und mit  24 Teilen     2-Methy        lamino-8-oxynaplithalin-6-          sulfonsäure    in     essiusaurem        iHedium    vereinigt.  Der ausgeschiedene     Disazofarbstoff    wird ab  filtriert und     getroeknet.     



  Er stellt ein blaues Pulver dar, das sich in  Wasser mit blauer Farbe löst und Wolle und  Seide in neutralem oder schwach saurem Bad  in blauen Tönen von guter     Schwefel-,    Walk  und Lichtechtheit färbt.  



  Er besitzt die Formel:  
EMI0001.0054     




  <B> Additional patent </B> to main patent No. 263651. Process for the production of an acidic disazo raw material. It has been found that a new, valuable acidic disazo dye 0.e- is obtained if diazotized p-tertiary, r-amylaniline is alkaline to 1-amino-3- (4'-methyl) - plienylsulfoylaminobenzene-6- sulfonic acid coupling,

   the obtained 111onoazofa dye in the sulfoylatninogrttppe metliyliert, further diazo- tiert. and the diazo compound of the aminoazo dye is combined in an acidic medium with 2 -lethyl-amitio-8-oxynaphthaiine-6-stilfonic acid.



       Example; 16.3 parts of p-tertiary amylaniline are diazoated and the diazo solution is combined with the soda-alkaline solution of 34.2 parts of 1-amino-3- (4'-ethyl) -phenylsulfoylaminobenzene-6-sulfonic acid.

   After coupling has ended, the aminoazo dye is separated off, dissolved in water using 80 parts of 301% sodium hydroxide solution and treated with 20 parts of dimeth5 sulfate at normal temperature until the dye methylated exclusively in the substituted amino group is eliminated.

   It is stirred in water and diazo- ated at about 50 with 7 parts of sodium nitrite and 35 parts of concentrated hydrochloric acid, the diazo compound is filtered off and combined with 24 parts of 2-methylamino-8-oxynaplithalin-6-sulfonic acid in acidic iHedium. The precipitated disazo dye is filtered off and dried.



  It is a blue powder that dissolves in water with a blue color and dyes wool and silk in a neutral or weakly acidic bath in blue shades of good fastness to sulfur, milled and light.



  It has the formula:
EMI0001.0054

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen, wertvollen sauren Disazofarbstoffes, dadurch gekennzeichnet, dass man diazotiertes p-Ter- tiär-Amylanilin alkalisch auf 1 Amino-3-(4'- methyl) -plienylstilfoylaininobenzol - 6 -sulfon - säure kuppelt, den erhaltenen Monoazofarb- stoff in der Sulfoylaminogruppe methyliert, Claim: Process for the production of a new, valuable acidic disazo dye, characterized in that diazotized p-tertiary-amylaniline is coupled alkaline to 1-amino-3- (4'-methyl) -plienylstilfoylaininobenzene-6-sulfonic acid, the obtained Monoazo dye methylated in the sulfoylamino group, weiterdiazotiert und die Diazoverbindung des Aminoazofarbstoffes in saurem Medium mit 2-Methylamino- 8 -oxynaphthalin-6-sulfonsäure vereinigt. Der Farbstoff ist ein blaues Pulver, das sich in Wasser mit blauer Farbe löst und Wolle und Seide in neutralem oder schwach saurem Bad in blauen Tönen von guter Schwefel-, Walk- und Lichtechtheit färbt. Fr besitzt die Formel: EMI0002.0003 further diazotized and the diazo compound of the aminoazo dye combined with 2-methylamino-8-oxynaphthalene-6-sulfonic acid in an acidic medium. The dye is a blue powder that dissolves in water with a blue color and dyes wool and silk in a neutral or slightly acidic bath in blue shades of good fastness to sulfur, milled and light. Fr has the formula: EMI0002.0003
CH267295D 1948-02-17 1948-02-17 Process for the preparation of an acidic disazo dye. CH267295A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH267295T 1948-02-17
CH263651T 1950-02-22

Publications (1)

Publication Number Publication Date
CH267295A true CH267295A (en) 1950-03-15

Family

ID=25730660

Family Applications (1)

Application Number Title Priority Date Filing Date
CH267295D CH267295A (en) 1948-02-17 1948-02-17 Process for the preparation of an acidic disazo dye.

Country Status (1)

Country Link
CH (1) CH267295A (en)

Similar Documents

Publication Publication Date Title
CH286500A (en) Process for the preparation of a monoazo dye.
CH267295A (en) Process for the preparation of an acidic disazo dye.
CH267296A (en) Process for the preparation of an acidic disazo dye.
CH199371A (en) Process for the preparation of an azo dye.
CH261855A (en) Process for the preparation of a copperable disazo dye.
CH270452A (en) Process for the preparation of an acidic disazo dye.
CH199368A (en) Process for the preparation of an azo dye.
CH267289A (en) Process for the preparation of a copper-compatible polyazo dye.
CH282259A (en) Process for the preparation of a monoazo dye.
CH146767A (en) Process for the production of a new azo dye.
CH200063A (en) Process for the preparation of an azo dye.
CH267282A (en) Process for the preparation of a copper-compatible polyazo dye.
CH199370A (en) Process for the preparation of an azo dye.
CH157523A (en) Process for the production of a new azo dye.
CH292654A (en) Process for the preparation of a substantive azo dye.
CH309427A (en) Process for the preparation of a copperable disazo dye.
CH146755A (en) Process for the production of a new azo dye.
CH199369A (en) Process for the preparation of an azo dye.
CH292653A (en) Process for the preparation of a substantive azo dye.
CH311483A (en) Process for the preparation of a copper-containing disazo dye.
CH267285A (en) Process for the preparation of a copper-compatible polyazo dye.
CH260306A (en) Process for the preparation of a disazo dye.
CH267279A (en) Process for the preparation of a copper-compatible polyazo dye.
CH306273A (en) Process for the preparation of a substantive azo dye.
CH309431A (en) Process for the preparation of a copperable disazo dye.