CH117697A - Process for the preparation of a trisazo dye. - Google Patents

Process for the preparation of a trisazo dye.

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Publication number
CH117697A
CH117697A CH117697DA CH117697A CH 117697 A CH117697 A CH 117697A CH 117697D A CH117697D A CH 117697DA CH 117697 A CH117697 A CH 117697A
Authority
CH
Switzerland
Prior art keywords
preparation
cleve
dye
gray
coupled
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz Chemische Fabri Vormals
Original Assignee
Chem Fab Vormals Sandoz
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 Fab Vormals Sandoz filed Critical Chem Fab Vormals Sandoz
Publication of CH117697A publication Critical patent/CH117697A/en

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Description

  

  Verfahren zur Darstellung eines     Trisazofarbstoifes.       Es wurde gefunden, dass man zu einem  neuen     Trisazofarbstoff    gelangen kann, wenn  man     dia.zotiertes        o-Toluidin    mit     1,6-Naph-          thylaminsulfosäure        Cleve    kuppelt, das Zwi  schenprodukt weiter     @diazotiert,    mit 1,6  NaphthylaminsulfosäureClevekombiniert, er  neut dianotiert und mit     1-Phenylamidonaph-          tha.Iin-8-sulfosäure    kuppelt.  



  <I>Beispiel</I>  10,7 Teile     a-Toluidin    werden mit 6,9  Teilen Nitrit dianotiert, mit 22,3 Teilen     1,6-          Naphthylaminsulfosäure        Cleve    kombiniert,  der entstandene     Monoa.zofarbstoff    wird mit  6,9 Teilen Nitrit weiter dianotiert und mit  22,3 Teilen     1,6-Naphthylaminsulfosäure        Cleve     gekuppelt. Der     Disazofarbstoff    wird abge  schieden, mit 6,9 Teilen Nitrit wieder diano  tiert und zum Schluss mit einer Lösung von    32,1 Teilen     1-Phenylamidonaphthalin-8-sulfo-          saurem    Natrium kombiniert.  



  Der neue Farbstoff bildet ein grau  schwarzes Pulver und färbt Baumwolle     licht-          und    waschecht grau bis schwarz.



  Process for the preparation of a trisazo dye. It has been found that a new trisazo dye can be obtained if dia.zotierter o-toluidine is coupled with 1,6-naphthylamine sulfonic acid Cleve, the intermediate product is further @diazotized, combined with 1,6 naphthylamine sulfonic acid Cleve, dianotized again and with 1-Phenylamidonaphtha.Iin-8-sulfonic acid couples.



  <I> Example </I> 10.7 parts of α-toluidine are dianotized with 6.9 parts of nitrite, combined with 22.3 parts of 1,6-naphthylamine sulphonic acid Cleve, the resulting monoazo dye is added to 6.9 parts of nitrite dianotized and coupled with 22.3 parts of 1,6-naphthylamine sulfonic acid Cleve. The disazo dye is separated off, dianoed again with 6.9 parts of nitrite and finally combined with a solution of 32.1 parts of 1-phenylamidonaphthalene-8-sulphonic acid sodium.



  The new dye forms a gray-black powder and dyes cotton lightfast and washable gray to black.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines T'risazo- farbstoffes, dadurch gekennzeichnet, dass man dianotiertes o-Toluidin mit 1,6-Naphthylamin- sulfosäure Cleve kuppelt, das Zwischenpro- dukt weiter diazatiert, mit 1,6-Naphthylamiu- sulfosäure Cleve kombiniert, PATENT CLAIM: Process for the preparation of a T'risazo dye, characterized in that dianotated o-toluidine is coupled with 1,6-naphthylaminesulfonic acid Cleve, the intermediate product is further diazated and combined with 1,6-naphthylaminesulfonic acid Cleve, erneut dianotiert und mit 1-Phenylamidonaphthylamin-8-sulfo- säure, kuppelt. Der neue Farbstoff bildet ein grau schwarzes Pulver und färbt Baumwolle licht- und waschecht grau bis schwarz. dianotized again and with 1-phenylamidonaphthylamine-8-sulfonic acid, coupled. The new dye forms a gray-black powder and dyes cotton lightfast and washable gray to black.
CH117697D 1924-01-11 1924-11-04 Process for the preparation of a trisazo dye. CH117697A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR117697X 1924-01-11
CH114915T 1926-05-17

Publications (1)

Publication Number Publication Date
CH117697A true CH117697A (en) 1926-11-16

Family

ID=25708414

Family Applications (1)

Application Number Title Priority Date Filing Date
CH117697D CH117697A (en) 1924-01-11 1924-11-04 Process for the preparation of a trisazo dye.

Country Status (1)

Country Link
CH (1) CH117697A (en)

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