CH148689A - Process for the preparation of a vat dye. - Google Patents

Process for the preparation of a vat dye.

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Publication number
CH148689A
CH148689A CH148689DA CH148689A CH 148689 A CH148689 A CH 148689A CH 148689D A CH148689D A CH 148689DA CH 148689 A CH148689 A CH 148689A
Authority
CH
Switzerland
Prior art keywords
dye
condensation
preparation
diaminobenzene
methyl
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 CH148689A publication Critical patent/CH148689A/en

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Description

  

  Verfahren zur Darstellung eines     Küpenfarbstoffes.       Gegenstand dieses Patentes ist ein Ver  fahren zur Darstellung eines     Küpenfarb-          stoffes,        -welches    dadurch gekennzeichnet ist,  dass man     Naphtoylen-methyl-benzimidazol-          peri-dicarbonsäureanhydrid,    das durch Kon  densation von     Naphtoylen-4.        5-diäthylindan-          dion-1.8-dicarbonsäureanhydrid    mit     4-Me-          thyl-1    .

       2-diaminobenzol,    darauffolgende Auf-         spaltung        mit    Alkali und Oxydation erhält  lich ist, mit 1.     2-Diaminobenzol    kondensiert.  <I>Beispiel</I>  Kondensiert man     Naphtoylen-methyl-benz-          imidazol-peri-dicarbonsäureanhydrid    folgen  der Formel:

    
EMI0001.0018     
      das durch Kondensation von     Naphtoylen-4.5-          diäthylindandion-1.        8-dicarbonsäureanhydrid          mit        4-Methyl-1.        2-diaminobenzol,    darauffol  gende Aufspaltung mit Alkali und Oxydation  erhältlich ist, mit 1.     2-Diaminobenzol,    so er  hält man einen Farbstoff, der aus olivgrüner       Hydrosulfitküpe    Baumwolle in roten Tönen  anfärbt. Die Echtheitseigenschaften des  Farbstoffes sind gut.  



  Die Kondensation zu dem entsprechenden  Farbstoff wird zweckmässig in Lösungsmit  teln     bezw.    Verdünnungsmitteln,     wie    Eisessig,       Nitrobenzol,    einem Gemisch von beiden, fer  ner zum Beispiel     Py        ridin,    eventuell auch  Wasser (im     Autoklaven)        durchgeführt.     



  Die     Kondensation    erfolgt zweckmässig  durch     Erwärmen    auf Temperaturen zwischen  100   C und zirka 130   C.



  Process for the preparation of a vat dye. The subject of this patent is a process for the preparation of a vat dye, which is characterized in that naphthoylene-methyl-benzimidazole peri-dicarboxylic acid anhydride, which is produced by condensation of naphthoylene-4. 5-diethylindandione-1,8-dicarboxylic acid anhydride with 4-methyl-1.

       2-diaminobenzene, subsequent splitting with alkali and oxidation is obtainable, condensed with 1. 2-diaminobenzene. <I> Example </I> If naphthoylene-methyl-benz-imidazole-peri-dicarboxylic acid anhydride is condensed, follow the formula:

    
EMI0001.0018
      that by condensation of naphthylene-4,5-diethylindandione-1. 8-dicarboxylic anhydride with 4-methyl-1. 2-diaminobenzene, subsequent splitting with alkali and oxidation is available, with 1. 2-diaminobenzene, so he holds a dye that dyes cotton from olive-green hydrosulfite vat in red shades. The fastness properties of the dye are good.



  The condensation to the corresponding dye is expediently BEZW in solvents. Diluents, such as glacial acetic acid, nitrobenzene, a mixture of both, also for example pyridine, possibly also water (in an autoclave).



  The condensation is expediently carried out by heating to temperatures between 100 C and about 130 C.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass man Naphtoylen-methyl-benzimidazol-peri- diearbonsäureanhydrid, das durch Konden sation von Naphtoylen-4. 5-diäthylindandion- 1.8-dicarbonsäureanhydrid mit 4-Methyl- 1 . 2-diaminobenzol, darauffolgende Aufspal tung mit Alkali und Oxydation erhältlich ist, mit 1. 2-Diaminobenzol kondensiert. PATENT CLAIM: Process for the preparation of a vat dye, characterized in that naphthoylene-methyl-benzimidazole-peridiacid anhydride, which is formed by condensation of naphthoylene-4. 5-diethylindandione-1,8-dicarboxylic acid anhydride with 4-methyl-1. 2-diaminobenzene, subsequent splitting with alkali and oxidation is available, condensed with 1. 2-diaminobenzene. Der so gebildete Farbstoff färbt aus oliv grüner Hydrosulfitküpe Baumwolle in roten Tönen an. Die Echtheitseigenschaften des Farbstoffes sind gut. UNTERANSPRÜUCHE 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensa tion in Gegenwart eines Lösungsmittels ausführt. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensa tion unter Erwärmen durchführt. The dye thus formed stains cotton in red tones from an olive-green hydrosulfite vat. The fastness properties of the dye are good. SUBClaims 1. The method according to claim, characterized in that the condensation is carried out in the presence of a solvent. 2. The method according to claim, characterized in that the condensation is carried out with heating.
CH148689D 1928-06-18 1929-06-05 Process for the preparation of a vat dye. CH148689A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE148689X 1928-06-18
CH143998T 1929-06-05

Publications (1)

Publication Number Publication Date
CH148689A true CH148689A (en) 1931-07-31

Family

ID=25714398

Family Applications (1)

Application Number Title Priority Date Filing Date
CH148689D CH148689A (en) 1928-06-18 1929-06-05 Process for the preparation of a vat dye.

Country Status (1)

Country Link
CH (1) CH148689A (en)

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