CH213567A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH213567A
CH213567A CH213567DA CH213567A CH 213567 A CH213567 A CH 213567A CH 213567D A CH213567D A CH 213567DA CH 213567 A CH213567 A CH 213567A
Authority
CH
Switzerland
Prior art keywords
amino
dye
parts
azo dye
preparation
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie 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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH213567A publication Critical patent/CH213567A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B43/00Preparation of azo dyes from other azo compounds
    • C09B43/44Preparation of azo dyes from other azo compounds by substituting amine groups for hydroxyl groups or hydroxyl groups for amine groups; Desacylation of amino-acyl groups; Deaminating
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B31/00Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/02Disazo dyes
    • C09B31/06Disazo dyes from a coupling component "C" containing a directive hydroxyl group
    • C09B31/068Naphthols
    • C09B31/072Naphthols containing acid groups, e.g. —CO2H, —SO3H, —PO3H2, —OSO3H, —OPO2H2; Salts thereof

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 205534.    Verfahren zur Herstellung eines     Azofarbstoffes.       Nach dem durch das Hauptpatent ge  schützten Verfahren     erhält    man einen für  das Färben von     Acetatseide    besonders gut  geeigneten Farbstoff, wenn man     4-Acyl-          amino-l-amino-5-methogybenzol        Jiazotiert     und die     Diazoverbindung    mit     1-Amino-3-          methyl-6-methogybenzol    kuppelt und dann  die     Acylgruppe    abspaltet.

   Dieser Farbstoff  lässt sich auf der Faser     diazotieren    und mit       beispielsweise        2,3-Ogynaphthoes-äure    kuppeln.  Man erhält .so blaue bis schwarze Färbungen  von sehr guter Echtheit.  



  Wie nun weiter gefunden wurde, erhält  man     einen    Farbstoff mit den gleichen guten       Eigenschaften,    wenn man die aus     4-Acyl-          amino-l-amino-5-methogybenzol    hergestellte       Diazoverbindung    mit     1-Amino-3.6-dimethyl-          benzol    kuppelt und dann die     Acylgruppe    ab  spaltet. Der so erhaltene Farbstoff schmilzt  bei 165  .  



  <I>Beispiel;</I>  <B>16,5</B> Teile 4     .-        Acetamino    -1-     amino    - 5     -          methogybenzol    werden     in    500 Teilen Wasser    und 25 Teilen Salzsäure 20'     B6    gelöst und  unter Abkühlung durch Zugabe einer Lö  sung von 7 Teilen     Natriumnitrit    diazotiert.

    Zu der     Diazolösung    gibt man eine     Lösung     von 12,1 Teilen     1-Amino-3.        6-dimethylbenzol          in    200 Teilen Wasser     und    10 Teilen Salz  säure und .stumpft die Salzsäure durch  allmähliches     Zulaufenlassen    einer Lösung  von     Natriumacetat    ab. Es entsteht ein dicker       Farbstoffbrei,    der durch Verdünnen mit       ,Wasser    und Zugabe von Kochsalz     rührfähig     gehalten wird.

   Nach beendeter Kupplung  wird auf<B>50-60'</B> angewärmt und     abge-          presst.     



  Der Filterkuchen wird in 500 Teile Al  kohol eingetragen, mit Natronlauge neutral       gestellt,    mit     einer    Lösung von 20     Teilen          Natriumhydrogyd    versetzt und etwa 2 Stun  den unter     Rückfluss    gekocht, bis eine Probe  nach Verdampfen des Alkohols und Ab  filtrieren     völlig        salzsäurelöslich    ist. Dann       wird,der    Alkohol     abdestilliert,    der Farbstoff  mit Wasser     aufgenommen,    gepresst und mit      Wasser neutral gewaschen. Das Produkt  fällt in     griställchen    an, die bei 165   schmel  zen.  



  Der Farbstoff färbt     Acetyleellulose    aus  der Suspension gelb und gibt nach     Diazotie-          ren    und Entwickeln mit     2,3-Oxynaphthoe-          säure    klare blaue, bei stärkerer Färbung  schwarze Töne, welche neben den für diese       Farbstoffklasse    üblichen Echtheitseigen  schaften sich durch eine besonders gute  Abendfarbe und eine verbesserte Lichtecht  heit gegenüber mit ähnlichen bekannten  Farbstoffen erhaltene Färbungen auszeich  net.



  <B> Additional patent </B> to main patent no. 205534. Process for the production of an azo dye. According to the process protected by the main patent, a dye particularly suitable for dyeing acetate silk is obtained if 4-acylamino-1-amino-5-methogybenzene is jiazotized and the diazo compound with 1-amino-3-methyl-6 -methogybenzene couples and then splits off the acyl group.

   This dye can be diazotized on the fiber and coupled with, for example, 2,3-ogynaphthoic acid. This gives blue to black dyeings of very good fastness.



  As has now also been found, a dye with the same good properties is obtained if the diazo compound prepared from 4-acylamino-1-amino-5-methogybenzene is coupled with 1-amino-3,6-dimethylbenzene and then the acyl group splits off. The dye thus obtained melts at 165.



  <I> Example; </I> <B> 16.5 </B> parts of 4 .- Acetamino -1-amino-5-methogybenzene are dissolved in 500 parts of water and 25 parts of hydrochloric acid 20 'B6 and, with cooling, by addition a solution of 7 parts of sodium nitrite diazotized.

    A solution of 12.1 parts of 1-amino-3 is added to the diazo solution. 6-dimethylbenzene in 200 parts of water and 10 parts of hydrochloric acid and dulls the hydrochloric acid by gradually running in a solution of sodium acetate. The result is a thick paste of dyestuff, which is kept stirrable by diluting with water and adding sodium chloride.

   After the coupling is complete, it is heated to <B> 50-60 '</B> and pressed.



  The filter cake is introduced into 500 parts of alcohol, made neutral with sodium hydroxide solution, treated with a solution of 20 parts of sodium hydrogen and refluxed for about 2 hours until a sample is completely soluble in hydrochloric acid after the alcohol has evaporated and filtered off. Then, the alcohol is distilled off, the dye is taken up with water, pressed and washed neutral with water. The product is obtained in granules that melt at 165.



  The dyestuff colors acetylellulose yellow from the suspension and, after diazotizing and developing with 2,3-oxynaphthoic acid, gives clear blue shades, with stronger coloration black shades which, in addition to the fastness properties customary for this class of dyestuff, are characterized by a particularly good evening color and a improved lightfastness compared with dyeings obtained with similar known dyes.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azo- farbstoffes, dadurch gekennzeichnet, dass man 4-Acylamino-l-amino-5-methaxybenzol dia.zotiert und mit 1-Amino-3.6-dimethyl- benzol kuppelt und dann die Acylgruppe ab spaltet. Der Farbstoff schmilzt bei 165 C und färbt Acetatseide in gelben Tönen. PATENT CLAIM: Process for the production of an azo dye, characterized in that 4-acylamino-1-amino-5-methaxybenzene is dia.zotiert and coupled with 1-amino-3,6-dimethylbenzene and then the acyl group is split off. The dye melts at 165 C and dyes acetate silk in yellow tones. Er lä.sst sich auf der Faser diazotieren und er gibt beim Entwickeln mit 2,3-Oxynaphthoe- säure ein klares Blau bezw: Schwarz von guter Echtheit: It can be diazotized on the fiber and, when developed with 2,3-oxynaphthoic acid, gives a clear blue or black of good fastness:
CH213567D 1939-06-22 1939-06-22 Process for the preparation of an azo dye. CH213567A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH213567T 1939-06-22
CH205534T 1939-06-22

Publications (1)

Publication Number Publication Date
CH213567A true CH213567A (en) 1941-02-15

Family

ID=25724191

Family Applications (1)

Application Number Title Priority Date Filing Date
CH213567D CH213567A (en) 1939-06-22 1939-06-22 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH213567A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2570946A1 (en) * 1984-10-01 1986-04-04 Oreal NOVEL KERATIN FIBER DYEING COMPOSITIONS CONTAINING AZOIC DYE, PROCESS FOR PREPARING THE DYE AND IMPLEMENTING SAID COMPOSITIONS FOR DYING KERATIN FIBERS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2570946A1 (en) * 1984-10-01 1986-04-04 Oreal NOVEL KERATIN FIBER DYEING COMPOSITIONS CONTAINING AZOIC DYE, PROCESS FOR PREPARING THE DYE AND IMPLEMENTING SAID COMPOSITIONS FOR DYING KERATIN FIBERS
US4886517A (en) * 1984-10-01 1989-12-12 L'oreal Dyeing composition for human hair containing an azo dye

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