CH126825A - Process for the preparation of a sulfur-containing indigoid vat dye. - Google Patents

Process for the preparation of a sulfur-containing indigoid vat dye.

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Publication number
CH126825A
CH126825A CH126825DA CH126825A CH 126825 A CH126825 A CH 126825A CH 126825D A CH126825D A CH 126825DA CH 126825 A CH126825 A CH 126825A
Authority
CH
Switzerland
Prior art keywords
sulfur
preparation
indigoid
vat dye
dye
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH126825A publication Critical patent/CH126825A/en

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  • Pyridine Compounds (AREA)

Description

  

  Verfahren zur Darstellung eines     schwefelhaltigen        indigoiden        Itüpenfarbstoffes.       Es wurde gefunden,     ,dass    sehr wertvolle  schwefelhaltige     indigo.ide        Küpenfarbstoffe     erhalten werden, wenn man     Monoalkyl-,        Aral-          kyl-    oder     Aryläther    des     4-Merkapto-l-naph-          tols    oder seiner Derivate mit den zur Her  stellung von     indigoiden    Farbstoffen dienenden  Komponenten,

   wie zum Beispiel     Isatinchlo-          ride,        Isatinanilide    usw.,     kondensiert.     



  Gegenstand vorliegender Erfindung ist  ein Verfahren zur Darstellung eines schwe  felhaltigen     indigoiden        Küpenfarbstoffes    aus  dem     Monomethy        läther    des     4-Merkapto-l-oxy-          naphtalins;    das Verfahren ist dadurch ge  kennzeichnet, JA man den     Monomethyläther     des     4-Merkapto-l-oxyna.phtalins    mit     5.7-          Dibromisatinhalogeni:

  d,    zum Beispiel     5.7-          Dibromisatinchlorid,        kondensiert.    Der erhal  tene Farbstoff löst sich in Schwefelsäure  schwer, leichter in     Pyridin    mit blaugrüner  Farbe und färbt die Faser aus der alkali  schen, gelben     Hydrosulfitküpe    klar und echt       grünstichig    blau an.

      <I>Beispiel:</I>  190     Gewichtsteile    des     Monomethyläthers     des     4-Merkapto-l-oxyna.phtalins        (Ber.    48,  Seite 128) werden in 2000 Gewichtsteilen  Benzol gelöst, mit 5.     7-Dibromisatinchlorid,     auf übliche Weise aus 305 Gewichtsteilen       5.7-Dibromisatin    und 230 Gewichtsteilen       Fhosphorpentachlorid    in     Chlorbenzollösung     hergestellt, vereinigt.

   Nach kurzer Zeit kri  stallisiert der Farbstoff; er ist in Schwefel  säure schwer, besser in     Pyridin,    mit blau  grüner Farbe löslich und färbt die Faser aus  der gelben, alkalischen     Hydrosulfitküpe    klar  und echt     grünstichig    blau an.



  Process for the preparation of a sulfur-containing indigoid itupene dye. It has been found that very valuable sulfur-containing indigoid vat dyes are obtained if monoalkyl, aralkyl or aryl ethers of 4-mercapto-1-naphthol or its derivatives are used with the components used to produce indigoid dyes ,

   such as isatinchlorides, isatinanilides, etc., condensed.



  The present invention relates to a process for the preparation of a sulfur-containing indigoid vat dye from the monomethyl ether of 4-mercapto-l-oxynaphthalene; the process is characterized by the fact that the monomethyl ether of 4-mercapto-l-oxyna.phtalins is used with 5.7-dibromoisatin halides:

  d, for example 5.7-dibromoisatin chloride, condensed. The dye obtained is difficult to dissolve in sulfuric acid, more easily in pyridine with a blue-green color and stains the fibers from the alkaline, yellow hydrosulfite vat clear and really greenish blue.

      <I> Example: </I> 190 parts by weight of the monomethyl ether of 4-mercapto-l-oxyna.phtalins (Ber. 48, page 128) are dissolved in 2000 parts by weight of benzene, with 5. 7-dibromoisatin chloride, in the usual way from 305 Parts by weight of 5,7-dibromoisatin and 230 parts by weight of phosphorus pentachloride prepared in chlorobenzene solution, combined.

   After a short time, the dye crystallizes; it is difficult to dissolve in sulfuric acid, better in pyridine, with a blue-green color and stains the fibers from the yellow, alkaline hydrosulfite vat clear and really greenish blue.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines schwe felhaltigen, indigoiden Küpenfarbstoffes, da durch gekennzeichnet, dass man den Mono methyläther des 4-Merl@apto-l-.oxyna.phtalins mit 5.7-Dibromisatinhalogenid kondensiert. Der neue Farbstoff löst sich in Schwefel säure schwer, leichter in Pyridin mit blau grüner Farbe; er färbt die Faser aus der alkalischen, gelben Hydrosulfitküpe klar und echt grünstichig blau an. PATENT CLAIM: Process for the preparation of a sulfur-containing, indigoid vat dye, characterized in that the monomethyl ether des 4-Merl@apto-l-.oxyna.phtalins is condensed with 5.7-dibromoisatin halide. The new dye dissolves difficultly in sulfuric acid, more easily in pyridine with a blue-green color; it stains the fibers from the alkaline, yellow hydrosulphite vat clear and really greenish blue.
CH126825D 1926-04-03 1927-03-18 Process for the preparation of a sulfur-containing indigoid vat dye. CH126825A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE126825X 1926-04-03

Publications (1)

Publication Number Publication Date
CH126825A true CH126825A (en) 1928-07-02

Family

ID=5659825

Family Applications (1)

Application Number Title Priority Date Filing Date
CH126825D CH126825A (en) 1926-04-03 1927-03-18 Process for the preparation of a sulfur-containing indigoid vat dye.

Country Status (1)

Country Link
CH (1) CH126825A (en)

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