CH143589A - Process for the preparation of a stain-coloring disazo dye. - Google Patents

Process for the preparation of a stain-coloring disazo dye.

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Publication number
CH143589A
CH143589A CH143589DA CH143589A CH 143589 A CH143589 A CH 143589A CH 143589D A CH143589D A CH 143589DA CH 143589 A CH143589 A CH 143589A
Authority
CH
Switzerland
Prior art keywords
parts
stain
preparation
coloring
brown
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH143589A publication Critical patent/CH143589A/en

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Description

  

  Verfahren zur     Darstellung    eine\     belzenfärbenden        Disazofarbstoffes.       Es wurde gefunden, dass     man    einen wert  vollen     beizenfärbenden        Disazofarbstoff    erhält,  wenn man     1-Anrinorraphtalitt-7-strlfosäure        dia-          zotiert,    mit     1-Amitronaplrtalin-7-sulfo@äure     kombiniert, erneut dianotiert und mit     1-Oxy-          berrzol-2-car'bonsäure    kuppelt.

           Beispiel          22.3        Teile        1-Amitrorraphtalirr-7-sulfosätrre     <B>All</B>     110o/oiger        Ansehlämmung    werden nach     Zu-          ,iatz        voll    12 Teilen Salzsäure     30o/oig    mit     (i,9     Teilen     Natriumnitrit    dianotiert, worauf eine  Lösung     voll    22,3 Teilen     1-Aminonapht:rlitt-          7-strlfosätrre    in     2"00    Teilen Wasser zugefügt  wird.

   Nach beendeter Kupplung und nach       Zusatz    von 4 Teilen     'NTatronhydrat    werden 7  Teile     Natriumnitrit    zugegeben und in 35 Teile       Salzsäure        '0        %        verdünnt        mit        :?00        Teilen     Wasser bei 15 o einlaufen     gelassen.    Die     Dia-          zoverbindung        wird    reit Kochsalz     ausgefällt     und gepresst.

   Der     1'resskttclrerr    wird darauf  mit 150 Teilen Wasser und 150 Teilen Eis       angeteigt,    mit 14 Teilen     1-Oxybetrzol-2-car-          t,onsäure    als     Natron-zalz    versetzt und 30     Teile            Natronlauge        ZOojoig    langsam zufliessen     gela>-          sen.    Nach beendeter Kupplung wird mit     1U     Teilen Essigsäure     80o;oig    neutralisiert und der  Farbstoff mit Kochsalz gefällt.  



  Der Farbstoff bildet ein braunes Pulver,  löslich in Wasser mit     gelbi-rauner,    in konzen  trierter Schwefelsäure mit blauer Farbe. Er  erzeugt im     Chromdruck    ein Braun von grosser  Seifen-, Wasch-     und    Lichtechtheit.



  Process for the preparation of a disazo dye which produces a bark. It has been found that a valuable stain-coloring disazo dye is obtained if 1-anrinorraphthalite-7-strlfoic acid is diazotized, combined with 1-amitronaplrtaline-7-sulfoic acid, dianotated again and with 1-oxyberrzol-2- carboxylic acid couples.

           Example 22.3 parts of 1-Amitrorraphtalirr-7-sulfosätrre <B> All </B> 110% insulation are after addition, iatz full 12 parts of hydrochloric acid 30% with (1.9 parts of sodium nitrite, whereupon a solution full 22 3 parts of 1-aminonapht: rlitt- 7-strlfosätrre in 2,000 parts of water is added.

   After the coupling is complete and after the addition of 4 parts of sodium hydrate, 7 parts of sodium nitrite are added and the mixture is diluted 0% in 35 parts of hydrochloric acid with: - 00 parts of water at 15 °. The diazo compound is precipitated with common salt and pressed.

   The oil is then made into a paste with 150 parts of water and 150 parts of ice, 14 parts of 1-oxy Betrzol-2-cardanoic acid as sodium salt are added and 30 parts of sodium hydroxide solution are allowed to slowly flow in. After the coupling has ended, it is neutralized with 1U parts of 80% acetic acid and the dye is precipitated with sodium chloride.



  The dye forms a brown powder, soluble in water with a yellowish-gray color, in concentrated sulfuric acid with a blue color. With chrome printing, it creates a brown that is extremely fast to soap, washing and light.

Claims (1)

PATEI\TA:\ SPRUCH Verfahren zur Darstellung eines beizen färbenden Disazofarbstoffes, dadurch gekenn zeichnet, dass man die Diazoverbindung der 1-Atnirronapbtalirr-7-sulfosät:re- mit 1-Amino- naplrtalitr-7-sulfosäLire'kombirtiert, erneut dia notiert und mit 1-Oxyberrzol-2-carlbonsäur-e kuppelt. PATEI \ TA: \ SPRUCH Process for the preparation of a stain-staining disazo dye, characterized in that the diazo compound of 1-Atnirronapbtalirr-7-sulfosät: re is combined with 1-Amino-naplrtalitr-7-sulfosäLire ', and again dia with 1-oxyberrzene-2-carboxylic acid coupled. Der Farbstoff bildet ein braunes Pulver., löslich in Wasser mit gelbbrauner, in konzen trierter Schwefelsäure mit blauer Farbe und erzeugt im Chromdruck ein Braun von grosser Seifen-. Wasch- und Lichtechtheit. The dye forms a brown powder., Soluble in water with yellow-brown, in concentrated sulfuric acid with blue color and produces a brown of large soap in the chrome print. Wash and lightfastness.
CH143589D 1928-02-20 1929-02-18 Process for the preparation of a stain-coloring disazo dye. CH143589A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE143589X 1928-02-20
CH141877T 1929-04-22

Publications (1)

Publication Number Publication Date
CH143589A true CH143589A (en) 1930-11-15

Family

ID=25713943

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143589D CH143589A (en) 1928-02-20 1929-02-18 Process for the preparation of a stain-coloring disazo dye.

Country Status (1)

Country Link
CH (1) CH143589A (en)

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