CH148692A - Process for the preparation of a vat dye. - Google Patents

Process for the preparation of a vat dye.

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Publication number
CH148692A
CH148692A CH148692DA CH148692A CH 148692 A CH148692 A CH 148692A CH 148692D A CH148692D A CH 148692DA CH 148692 A CH148692 A CH 148692A
Authority
CH
Switzerland
Prior art keywords
preparation
vat dye
vat
dye
condensation
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 CH148692A publication Critical patent/CH148692A/en

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Description

  

  Verfahren zur Darstellung eines     Nüpenfarbstoffes.       Gegenstand dieses Patentes ist ein Ver  fahren zur Darstellung eines     Küpenfarb-          stoffes,    welches dadurch gekennzeichnet ist,  dass man     Naphtoylen-benzimidazol-peri-di-          carbonsäureanhydrid    mit     4-Brom-1.2-di-          aminobenzol    kondensiert.  



  <I>Beispiel:</I>  Man kondensiert     4-Brom-1    . 2,     diaminoben-          zol    mit     Naphtoylen-benzimidazol-peri-dicar-          bonsäureanhydrid    in einer     Eisessig-Nitro-          benzollösung    unter Erhitzen.  



  Man erhält einen Farbstoff, der aus oliv  grüner     Hydrosulfitküpe    Baumwolle in rot  braunen Tönen von guten Echtheitseigen  schaften anfärbt.



  Process for the preparation of a pebble dye. The subject of this patent is a process for the preparation of a vat dye which is characterized in that naphthoylene-benzimidazole-peri-dicarboxylic anhydride is condensed with 4-bromo-1,2-diaminobenzene.



  <I> Example: </I> 4-Bromo-1 is condensed. 2, diaminobenzene with naphthoylene-benzimidazole-peri-dicarboxylic acid anhydride in a glacial acetic acid-nitrobenzene solution with heating.



  A dye is obtained which dyes cotton from olive-green hydrosulfite vat in red-brown shades with good fastness properties.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass man Naphtoylen-benzimidazol-peri-dicarbon- säureanhydrid mit. 4-Brom-l. 2 diaminoben- zol kondensiert. Der so erhaltene Farbstoff färbt aus oliv grüner Hydrosulfitküpe Baumwolle in rot braunen Tönen von guten Echtheitseigen schaften an. UNTERANSPRüCHE: 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensa tion in Gegenwart eines Lösungsmittels ausführt. PATENT CLAIM: Process for the preparation of a vat dye, characterized in that naphthylene-benzimidazole-peri-dicarboxylic acid anhydride is used. 4-bromine-l. 2 diaminobenzene condensed. The dye obtained in this way stains cotton from olive-green hydrosulfite vat in red-brown shades with good fastness properties. SUBClaims: 1. The method according to claim, characterized in that the condensation is carried out in the presence of a solvent. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensa tion unter Erwärmen durchführt. 2. The method according to claim, characterized in that the condensation is carried out with heating.
CH148692D 1928-06-18 1929-06-05 Process for the preparation of a vat dye. CH148692A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE148692X 1928-06-18
CH143998T 1929-06-05

Publications (1)

Publication Number Publication Date
CH148692A true CH148692A (en) 1931-07-31

Family

ID=25714401

Family Applications (1)

Application Number Title Priority Date Filing Date
CH148692D CH148692A (en) 1928-06-18 1929-06-05 Process for the preparation of a vat dye.

Country Status (1)

Country Link
CH (1) CH148692A (en)

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