CH144489A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH144489A
CH144489A CH144489DA CH144489A CH 144489 A CH144489 A CH 144489A CH 144489D A CH144489D A CH 144489DA CH 144489 A CH144489 A CH 144489A
Authority
CH
Switzerland
Prior art keywords
disazo dye
dye
preparation
amino
sulfonic acid
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 CH144489A publication Critical patent/CH144489A/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     Disazofarbstoffes.       Es wurde gefunden,     dass    man einen neuen       Disazofarbstoff    erhält, wenn man     1-Amino-          2.        5-dichlorbenzol-4-sulfosäure        diazotiert,    mit  <B>1 -</B>     Amino   <B>-</B>     '-)   <B>-</B>     5,thoxynapl-ithalin   <B>- 6 -</B>     suliosäure     vereinigt,

   den erhaltenen     Monoazofarbstoff          diazotiert    und mit     2-Phenylamino-5-oxynaph-          thitlin-7-suliosäure    kuppelt.  



  Der neue     Disazofarbstoff    färbt Baum  wolle und die Kunstseiden aus regenerierter  Zellulose, insbesondere     Viskosekunstseide,    in       grünstichig    blauen Tönen.  



  <I>Beispiel:</I>  Die aus 24,2 Teilen     1-Amino-2.        5-dichlor-          1)enzol-4-sulfosäure    bereitete     Diazolösung     wird bis zum Verschwinden der mineralsau  ren Reaktion mit     Natriumacetat    -versetzt und  mit einer neutralen Lösung von<B>26,7</B> Teilen  <B>1 -</B>     Amino   <B>-</B> 2<B>-</B>     äthoxynaphthalin   <B>- 6 -</B>     sulfosäure     vereinigt.

   Der gebildete     Monoazofarbstoff     wird durch Zugabe von Soda in der Wärme  in     Lösun-        aebraclit,    hierauf als     Natriumsalz          #I        21     durch Kochsalz     ausgesalzen    und     abfiltriert.     Der wieder gelöste Farbstoff wird bei<B>10'</B>  mit     6,9    Teilen     Natriumnitrit   <B>und</B> hierauf    mit<B>30</B> Teilen 30%iger Salzsäure versetzt.

    Die     Diazolösung        lässt    man einfliessen in eine       sodaalkaliselle    Lösung von<B>31,5</B> Teilen     2-          Plienylamino   <B>- 5 -</B>     oxynaplithalin-7-        sulfosäure.     Nach beendeter Kupplung wird der Farb  stoff     ausgesalzen    und filtriert. Die zweite  Kupplung kann auch bei Gegenwart von       Pyridin    durchgeführt werden.



  Additional patent to main patent no. 142444. Process for the preparation of a disazo dye. It has been found that a new disazo dye is obtained if 1-amino-2.5-dichlorobenzene-4-sulfonic acid is diazotized with <B> 1 - </B> amino <B> - </B> '-) <B> - </B> 5, thoxynapl-ithalin <B> - 6 - </B> sulioic acid combined,

   the monoazo dye obtained is diazotized and coupled with 2-phenylamino-5-oxynaphthitlin-7-sulio acid.



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



  <I> Example: </I> The one from 24.2 parts of 1-amino-2. 5-dichloro-1) enzene-4-sulfonic acid is mixed with sodium acetate until the mineral acid reaction disappears and with a neutral solution of <B> 26.7 </B> parts <B> 1 - </ B > Amino <B> - </B> 2 <B> - </B> ethoxynaphthalene <B> - 6 - </B> sulfonic acid combined.

   The monoazo dye formed is salted out by adding sodium carbonate in the warmth in solution, then salted out as the sodium salt #I 21 with common salt and filtered off. The redissolved dye is mixed with 6.9 parts of sodium nitrite at <B> 10 '</B> and then with <B> 30 </B> parts of 30% hydrochloric acid.

    The diazo solution is allowed to flow into a soda-alkaline solution of 31.5 parts of 2-plienylamino-5-oxynaplithalin-7-sulfonic acid. After 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 Ilerstellung eines neuen Disazofarbstoffes, dadurch gekennzeichnet, dass man 1-Amino-2. 5-dielilorbenzol-4-sulfo- saure diazotiert, mit 1-Amino-2-äthoxynaph- thalin-6-sulfosäure vereinigt, den erhaltenen Monoazofarbstoff diazotiert, und mit 2-Phe- nylamino-5-oxynaphthalin-7-sulfosäure kup pelt. PATENT CLAIM: Process for the preparation of a new disazo dye, characterized in that 1-amino-2. 5-dielilorbenzene-4-sulfo acid diazotized, combined with 1-amino-2-ethoxynaphthalene-6-sulfonic acid, diazotized the resulting monoazo dye, 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 grünstiehig blauen Tönen. The new disazo dye dyes cotton and artificial silk made from regenerated cellulose, especially viscose artificial silk, in greenish blue tones.
CH144489D 1929-02-02 1929-02-02 Process for the preparation of a disazo dye. CH144489A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH142444T 1929-02-02
CH144489T 1929-02-02

Publications (1)

Publication Number Publication Date
CH144489A true CH144489A (en) 1930-12-31

Family

ID=25714047

Family Applications (1)

Application Number Title Priority Date Filing Date
CH144489D CH144489A (en) 1929-02-02 1929-02-02 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH144489A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD907766S1 (en) 2019-07-29 2021-01-12 Ira Yasmin Lehmann Injector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD907766S1 (en) 2019-07-29 2021-01-12 Ira Yasmin Lehmann Injector

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