CH134852A - Process for the preparation of a dye. - Google Patents

Process for the preparation of a dye.

Info

Publication number
CH134852A
CH134852A CH134852DA CH134852A CH 134852 A CH134852 A CH 134852A CH 134852D A CH134852D A CH 134852DA CH 134852 A CH134852 A CH 134852A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
parts
purple
diethylsafranine
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
Priority claimed from DEI30860D external-priority patent/DE488624C/en
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH134852A publication Critical patent/CH134852A/en

Links

Landscapes

  • Coloring (AREA)

Description

  

  Verfahren zur Darstellung eines Farbstoffes.    Gegenstand der vorliegenden Erfindung  ist ein Verfahren zur     Darstellung    eines  
EMI0001.0002     
    den man durch Kupplung von     diazotiertem          Diäthylsafranin    mit     Acetessigester    erhält.  



       Beispiel:     12 Gewichtsteile     Diäthylsafranin    werden  gelöst in 700 Teilen Wasser     und',    bei etwa  10   mit 15     Teilen,    Salzsäure (äquivalent 120)    Farbstoffes der folgenden Formel:         und    2 Teilen     Nitrit    100 %     diazotiert.    Die       Diazolösung    wird mit 9 Teilen Natrium  acetat     (wasserfei)    essigsauer gestellt und mit  einer Lösung von 4,5 Teilen     Acetessigester,     gelöst in 50 Teilen Wasser und 6 Teilen  Natronlauge 30 % gekuppelt. Die Kupplung  ist nach     ungefähr    zwei bis drei Stunden be  endet.

   Der Farbstoff     wird    mit 15 % Koch-      salz und etwas Chlorzink     ausgesalzen,    ab  filtriert und bei<B>50'</B> getrocknet. Ausbeute  ungefähr 18 Teile. Der Farbstoff stellt ein       violettschwarzes    Pulver dar und färbt tau-  
EMI0002.0003     
    dadurch gekennzeichnet, dass' man     diazotier-          tes        Diäthylsafranin    mit     Acetessigester     kuppelt.    eierte Baumwolle und Seide in violett  schwarzen Tönen an.



  Process for the preparation of a dye. The present invention is a method for the preparation of a
EMI0001.0002
    obtained by coupling diazotized diethylsafranine with acetoacetic ester.



       Example: 12 parts by weight of diethylsafranine are dissolved in 700 parts of water and, at about 10 with 15 parts, hydrochloric acid (equivalent to 120) of the dye of the following formula: and 2 parts of nitrite 100% diazotized. The diazo solution is made acetic acid with 9 parts of sodium acetate (anhydrous) and coupled with a solution of 4.5 parts of acetoacetic ester dissolved in 50 parts of water and 6 parts of 30% sodium hydroxide solution. The coupling ends after about two to three hours.

   The dye is salted out with 15% common salt and a little zinc chloride, filtered off and dried at <B> 50 '</B>. Yield about 18 parts. The dye is a purple-black powder and colors dew
EMI0002.0003
    characterized in that 'diazotized diethylsafranine is coupled with acetoacetic ester. cotton and silk in violet black tones.

Claims (1)

PATENTANSPRÜCH: Verfahren zur Darstellung eines Farb stoffes der folgenden Formel: Der Farbstoff stellt ein violettschwarzes Pulver dar und färbt tannierte Baumwolle und Seide in violettschwarzen Tönen an. PATENT CLAIM: Process for the preparation of a dye of the following formula: The dye is a purple-black powder and dyes tannin cotton and silk in purple-black tones.
CH134852D 1927-04-05 1928-03-29 Process for the preparation of a dye. CH134852A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEI30860D DE488624C (en) 1927-04-05 1927-04-05 Process for the representation of dyes
CH134105T 1928-03-29

Publications (1)

Publication Number Publication Date
CH134852A true CH134852A (en) 1929-08-15

Family

ID=28792700

Family Applications (1)

Application Number Title Priority Date Filing Date
CH134852D CH134852A (en) 1927-04-05 1928-03-29 Process for the preparation of a dye.

Country Status (1)

Country Link
CH (1) CH134852A (en)

Similar Documents

Publication Publication Date Title
CH134852A (en) Process for the preparation of a dye.
DE454771C (en) Process for the preparation of azo dyes
AT158260B (en) Process for the production of azo dyes.
CH249789A (en) Process for the preparation of a substantive azo dye.
CH134851A (en) Process for the preparation of a dye.
CH180695A (en) Process for the preparation of a new, copper-containing azo dye.
CH215832A (en) Process for the preparation of an azo dye.
CH232294A (en) Process for the preparation of a new acidic monoazo dye.
CH134850A (en) Process for the preparation of a dye.
CH301643A (en) Process for the preparation of an acidic monoazo dye.
CH215833A (en) Process for the preparation of an azo dye.
CH212647A (en) Process for the preparation of an azo dye.
CH215831A (en) Process for the preparation of an azo dye.
CH302806A (en) Process for the preparation of a trisazo dye.
CH141212A (en) Process for the preparation of a strongly basic azo dye.
CH296257A (en) Process for the preparation of a monoazo dye.
CH199371A (en) Process for the preparation of an azo dye.
CH296260A (en) Process for the preparation of a monoazo dye.
CH190325A (en) Process for the preparation of a water-insoluble azo dye.
CH286359A (en) Process for the preparation of an azo dye.
CH121715A (en) Process for the preparation of a disazo dye.
CH296258A (en) Process for the preparation of a monoazo dye.
CH251392A (en) Process for the preparation of a new monoazo dye.
CH141540A (en) Process for the preparation of a monoazo dye.
CH279528A (en) Process for the preparation of a metallizable monoazo dye.