CH144487A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH144487A
CH144487A CH144487DA CH144487A CH 144487 A CH144487 A CH 144487A CH 144487D A CH144487D A CH 144487DA CH 144487 A CH144487 A CH 144487A
Authority
CH
Switzerland
Prior art keywords
sulfonic acid
dye
disazo dye
amino
preparation
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 CH144487A publication Critical patent/CH144487A/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

  

      Verfahren    zur Herstellung eines     Bisazofarbstoffes.       Es wurde gefunden, dass man einen neuen       Disazofarbstoff    erhält, wenn man     1-Methyl-          2-amino-5-chlorbenzol-3-sulfosä.ure    dianotiert,  mit     1-Amino-\2-methoxynaphthalin-6-sulfo-          säure    vereinigt, den so erhaltenen     Monoazo-          farbstoff    dianotiert und mit     2-Phenyla,mino-          5-oxynaphthalin-7-sulfosäure    kuppelt.  



  Der neue     Disazofarbstoff    färbt Baum  wolle und die Kunstseiden aus regenerierter  Zellulose, insbesondere     Viskosekunstseide,     in     grünstichig    blauen Tönen, welche sich  durch ihre Reinheit und Gleichmässigkeit.  auszeichnen.  



  <I>Beispiel:</I>  22,15 Teile     1-Methyl-2-a.mino-5-chlorben-          zol-        3-sulfosäure    werden in üblicher Weise  dianotiert, die     Diazoverbindung    bis zum  Verschwinden der mineralsauren Reaktion  mit     'V'atriiimacetat    versetzt und mit einer       ti(Iiitralen    Lösung von 25,3 Teilen 1-     Amino-          2-methoxynaphthalin-6-sulfosäure    vereinigt.

         A1ach    beendeter     Kupplung    wird der gebil-         dete        Monoazofarbstoff        abfiltriert,    mit der  nötigen Menge Natronlauge gelöst und bei  0   mit 6,9 Teilen     Natriumnitrit    und 30 Tei  len     30%iger    Salzsäure versetzt.

   Die     Diazo-          verbindung    des     Monoazofarbstoffes    wird aus  gesalzen,     abfiltriert,    und langsam in eine       sodaalkalische    Lösung von 31,5 Teilen       -Phenylamino-5-oxynaphthalin-7-sulf        osäure     eingetragen. Nach beendeter Kupplung wird  der Farbstoff     ausgesalzen,    und     abfiltriert.     Die zweite Kupplung kann auch bei Gegen  wart von     Pyridin    durchgeführt werden.



      Process for the preparation of a bisazo dye. It has been found that a new disazo dye is obtained if 1-methyl-2-amino-5-chlorobenzene-3-sulfonic acid is dianotated and combined with 1-amino- \ 2-methoxynaphthalene-6-sulfonic acid, the thus obtained monoazo dye dianotized and coupled with 2-phenyla, mino-5-oxynaphthalene-7-sulfonic acid.



  The new disazo dye dyes cotton and artificial silk made from regenerated cellulose, especially viscose artificial silk, in greenish blue tones, which are characterized by their purity and evenness. distinguish.



  <I> Example: </I> 22.15 parts of 1-methyl-2-a.mino-5-chlorobenzene-3-sulfonic acid are dianotated in the usual way, the diazo compound until the mineral acid reaction disappears with 'V' atriumimacetat is added and combined with a titral solution of 25.3 parts of 1-amino-2-methoxynaphthalene-6-sulfonic acid.

         After the coupling has ended, the monoazo dye formed is filtered off, the required amount of sodium hydroxide solution is dissolved and 6.9 parts of sodium nitrite and 30 parts of 30% hydrochloric acid are added at 0.

   The diazo compound of the monoazo dye is salted, filtered off and slowly introduced into a soda-alkaline solution of 31.5 parts -phenylamino-5-oxynaphthalene-7-sulfonic acid. When the coupling is complete, the dye is salted out and filtered off. The second coupling can also be carried out in the presence of pyridine.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Disazofarbstoffes, dadurch gekennzeichnet, dass man 1-Methyl-2-amino-5-chlorbenzol-3- sulfosäure dianotiert, mit 1-Amino-2-me- thoxynaphthalin-6-sulfosäure vereinigt, den so erhaltenen Monoazofarbstoff dianotiert und mit 2-Phenylamino-5-oxynaphthalin-7- sulfosäure kuppelt. Claim: A process for the production of a new disazo dye, characterized in that 1-methyl-2-amino-5-chlorobenzene-3-sulfonic acid is dianotated and combined with 1-amino-2-methoxynaphthalene-6-sulfonic acid, the resulting Monoazo dye dianotized and coupled with 2-phenylamino-5-oxynaphthalene-7-sulfonic acid. Der neue Disazofarbstoff Färbt Baum wolle und die Kunstseiden aus regenerierter Zellulose, insbesondere Viskosekunstseide, in grünstichib blauen Tönen, welche sich durch ihre Reinheit und Gleichmässigkeit auszeich nen. The new disazo dye dyes cotton and artificial silk from regenerated cellulose, especially viscose artificial silk, in greenish blue tones, which are characterized by their purity and evenness.
CH144487D 1929-02-02 1929-02-02 Process for the preparation of a disazo dye. CH144487A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH144487T 1929-02-02
CH142444T 1929-02-02

Publications (1)

Publication Number Publication Date
CH144487A true CH144487A (en) 1930-12-31

Family

ID=25714045

Family Applications (1)

Application Number Title Priority Date Filing Date
CH144487D CH144487A (en) 1929-02-02 1929-02-02 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH144487A (en)

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