CH143604A - Process for the preparation of an acidic wool dye. - Google Patents

Process for the preparation of an acidic wool dye.

Info

Publication number
CH143604A
CH143604A CH143604DA CH143604A CH 143604 A CH143604 A CH 143604A CH 143604D A CH143604D A CH 143604DA CH 143604 A CH143604 A CH 143604A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
wool dye
acidic
acidic wool
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 CH143604A publication Critical patent/CH143604A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Darstellung eines sauren     Wollfarbstoffes.       Gegenstand des vorliegenden Zusatz  patentes ist ein Verfahren zur Darstellung  eines sauren Wollfarbstoffes, dadurch ge  kennzeichnet, dass man     4-Amino-sulfo-l.8-          naphtalindicarbonsäureanhydrid    mit Anilin  umsetzt.

      <I>Beispiel:</I>    10     Gewichtsteile    4 -     Amino-sulfo    -1 . 8     -          naphtalindicarbonsäureanhydrid,    das durch       Sulfieren    von     4-Amino-1,8-naphialindicar-          bonsäureanhydrid    entsteht, werden mit 10  Gewichtsteilen Anilin und ungefähr 80  Raumteilen Wasser einige     Stunden    zum  Sieden erhitzt. Nach dem Abtreiben des  überschüssigen Anilins mit Wasserdampf  und     Filtrieren    der Lösung kann der Farb  stoff durch     Aussalzen    in bekannter Weise  gewonnen werden.  



  Der Farbstoff stellt ein gelbes Pulver  dar, welches sich in Wasser mit gelber Farbe    und starker grüner Fluoreszenz löst. Er  färbt die tierische Faser aus saurem Bade in  einem sehr klaren     grünstichigen    Gelb.



  Process for the preparation of an acidic wool dye. The subject of the present additional patent is a process for the preparation of an acidic wool dye, characterized in that 4-amino-sulfo-1.8-naphthalene dicarboxylic anhydride is reacted with aniline.

      <I> Example: </I> 10 parts by weight of 4 - Amino-sulfo -1. 8 - naphthalene dicarboxylic acid anhydride, which is produced by sulfonating 4-amino-1,8-naphialine dicarboxylic acid anhydride, is heated to boiling for a few hours with 10 parts by weight of aniline and about 80 parts by volume of water. After driving off the excess aniline with steam and filtering the solution, the dye can be obtained in a known manner by salting out.



  The dye is a yellow powder that dissolves in water with a yellow color and strong green fluorescence. It colors the animal fibers from acid baths in a very clear greenish yellow.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines sauren Wollfarbstoffes, dadurch gekennzeichnet, dass man 4-Amitio-sulfo-1 .8-naphtalindicar- bonsäureanhydrid, das durch Sulfieren von 4- Amino-1 . 8-naphtalindicarbonsäureanhy- drid entsteht, mit Anilin umsetzt. Der Farbstoff stellt ein gelbes Pulver dar, welches sich in Wasser mit gelber Farbe und starker grüner Fluoreszenz löst. PATENT CLAIM: Process for the preparation of an acidic wool dye, characterized in that 4-Amitio-sulfo-1 .8-naphthalene dicarboxylic anhydride, which is obtained by sulfating 4-amino-1. 8-naphthalene dicarboxylic acid anhydride is formed and reacted with aniline. The dye is a yellow powder that dissolves in water with a yellow color and strong green fluorescence. Er färbt die tierische Faser aus saurem Bade in einem sehr klaren grünstichigen Gelb. It colors the animal fibers from acid baths in a very clear greenish yellow.
CH143604D 1927-10-29 1928-10-15 Process for the preparation of an acidic wool dye. CH143604A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE143604X 1927-10-29
CH141320T 1928-10-15

Publications (1)

Publication Number Publication Date
CH143604A true CH143604A (en) 1930-11-15

Family

ID=25713678

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143604D CH143604A (en) 1927-10-29 1928-10-15 Process for the preparation of an acidic wool dye.

Country Status (1)

Country Link
CH (1) CH143604A (en)

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