CH144484A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH144484A
CH144484A CH144484DA CH144484A CH 144484 A CH144484 A CH 144484A CH 144484D A CH144484D A CH 144484DA CH 144484 A CH144484 A CH 144484A
Authority
CH
Switzerland
Prior art keywords
dye
sulfonic acid
amino
disazo dye
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 CH144484A publication Critical patent/CH144484A/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

  

  Zusatzpatent zum Hauptpatent Nr. 142444.    Verfahren zur     Herstellung    eines     Disazofarbstof%s.       Es wurde gefunden, dass man einen neuen       Disazofarbstoff    erhält, wenn man     1-Amino-4-          acetylaminobenzol    - 2 -     sulfosäure    dianotiert,  mit.     1-Amino-2-methoxynaphthalin-6-sulfo-          säure    vereinigt, den erhaltenen     Monoazofarb-          stoff    dianotiert und mit     2-Phenylamino-5-          oxynaphthalin-7-sulfosäure    kuppelt.  



  Der neue     Disazofarbstoff    färbt Baumwolle  und die Kunstseiden aus regenerierter Zellu  lose, insbesondere     Viskosekunstseide,    in grün  stichig blauen Tönen.  



       Beispiel:     Die aus 23 Teilen     1-Amino-4-acetyl-          aminobenzol-2-sulfosäure    bereitete     Diazo-          lösung    wird bis zum Verschwinden der  mineralsauren Reaktion mit     Natriumacetat     versetzt und mit einer neutralen Lösung von  25,3 Teilen     1-Amino-2-methoxynaphtalin-6-          sulfosäure    vereinigt.

   Der gebildete     Monoa.zo-          farbstoff    wird durch Zugabe von Soda in der    Wärme in Lösung gebracht, hierauf als Na  triumsalz durch Kochsalz     ausgesalzen    und       abfiltriert.    Der wieder gelöste Farbstoff  wird bei 10   mit 6,9 Teilen     Natriumnitrit     und hierauf mit 30 Teilen 30%iger Salz  säure versetzt. Die     Diazolösung    lässt man  einfliessen in eine     sodaalkalische    Lösung von  31,5 Teilen     2-Phenylamino-5-oxynaphthalin-          ?-sulfosäure.    Nach beendeter Kupplung wird  der Farbstoff     ausgesalzen    und filtriert.

   Die  zweite Kupplung kann auch bei Gegenwart  von     Pyridin    vorgenommen werden.



  Additional patent to main patent No. 142444. Process for the production of a disazo dye% s. It has been found that a new disazo dye is obtained if 1-amino-4-acetylaminobenzene - 2 - sulfonic acid is dianotated with. 1-Amino-2-methoxynaphthalene-6-sulfonic acid is combined, the monoazo dye obtained is dianotized and coupled with 2-phenylamino-5-oxynaphthalene-7-sulfonic acid.



  The new disazo dye dyes cotton and artificial silk from regenerated cellulose, especially viscose artificial silk, in green, blue tones.



       Example: Sodium acetate is added to the diazo solution prepared from 23 parts of 1-amino-4-acetyl-aminobenzene-2-sulfonic acid and a neutral solution of 25.3 parts of 1-amino-2-methoxynaphthalene is added until the mineral acid reaction disappears -6- sulfonic acid combined.

   The Monoa.zo- dye formed is brought into solution by adding hot soda, then salted out as sodium salt with sodium chloride and filtered off. The redissolved dye is added at 10 with 6.9 parts of sodium nitrite and then with 30 parts of 30% hydrochloric acid. The diazo solution is allowed to flow into a soda-alkaline solution of 31.5 parts of 2-phenylamino-5-oxynaphthalene-? -Sulfonic acid. When the coupling is complete, the dye is salted out and filtered.

   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-Amino-4-acetylaminobenzol-2- sulfosäure dianotiert, mit 1-Amino-2-me- thoxynaphthalin-6-sulfosäure vereinigt, den erhaltenen Monoazofarbstoff dianotiert und mit ?-Pheiiylamino-5-oxyna.plithalin-7-sulfo- säure kuppelt. Claim: Process for the production of a new disazo dye, characterized in that 1-amino-4-acetylaminobenzene-2-sulfonic acid is dianotated, combined with 1-amino-2-methoxynaphthalene-6-sulfonic acid, the monoazo dye obtained is dianotized and? -Pheiiylamino-5-oxyna.plithalin-7-sulfoic acid couples. Der neue Disazofa.rbstoff färbt Baumwolle und die Kunstseiden aus regenerierter Zel- lulose, insbesondere Viskosekunstseide, in brünstichib blauen Tönen. The new disazofa dye dyes cotton and the artificial silk made of regenerated cellulose, especially viscose artificial silk, in fiery blue tones.
CH144484D 1929-02-02 1929-02-02 Process for the preparation of a disazo dye. CH144484A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH142444T 1929-02-02
CH144484T 1929-02-02

Publications (1)

Publication Number Publication Date
CH144484A true CH144484A (en) 1930-12-31

Family

ID=25714042

Family Applications (1)

Application Number Title Priority Date Filing Date
CH144484D CH144484A (en) 1929-02-02 1929-02-02 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH144484A (en)

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