CH143608A - Process for the preparation of an acidic wool dye. - Google Patents

Process for the preparation of an acidic wool dye.

Info

Publication number
CH143608A
CH143608A CH143608DA CH143608A CH 143608 A CH143608 A CH 143608A CH 143608D A CH143608D A CH 143608DA CH 143608 A CH143608 A CH 143608A
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 CH143608A publication Critical patent/CH143608A/en

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

Description

  

  Verfahren zur Darstellung eines sauren     Wollfarbstoffes.       Gegenstand des vorliegenden Zusatz  patentes ist ein Verfahren zur Darstellung  eines sauren Vollfarbstoffes, dadurch ge  kennzeichnet, dass man     4-Sulfamin-1.        8-naph-          talindiearbonsäureanhydrid    mit Anilin um  setzt.  



       Beispiel:     <B>25</B> Gewichtsteile     4-Sulfamin-1.8-naph-          t.alindiearbonsäureanhydrid    werden in 300  Raumteilen Wasser mit 25 Gewichtsteilen  Anilin einige Stunden unter     Rückfluss    zum  Sieden erhitzt.     Nach    beendeter Umsetzung  wird das überschüssige Anilin durch Wasser  dampfdestillation entfernt. Aus dem Filtrat    wird der Farbstoff durch     Aussalzen    ge  wonnen; er färbt die tierische Faser aus sau  rem Bade in einem sehr     klaren    Gelb.



  Process for the preparation of an acidic wool dye. The subject of the present additional patent is a process for the preparation of a full acidic dye, characterized in that 4-sulfamine-1. 8-naphthalenediearboxylic acid anhydride with aniline.



       Example: 25 parts by weight of 4-sulfamine-1.8-naph- t.alindiearboxylic acid anhydride in 300 parts by volume of water with 25 parts by weight of aniline are refluxed for a few hours. After the reaction has ended, the excess aniline is removed by steam distillation. The dye is obtained from the filtrate by salting out; it colors the animal fibers from acid baths a very clear yellow.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines sauren Wollfarbstoffes, .dadurch gekennzeichnet, dass man 4-Sulfamin-1 . 8-naphtalindicarbon- säureanhydriJ mit Anilin umsetzt. Der erhaltene Farbstoff färbt die tierische Faser aus saurem Bade in einem sehr kla ren Gelb. PATENT CLAIM: Process for the preparation of an acidic wool dye, characterized in that 4-sulfamine-1. 8-naphthalene dicarboxylic acid anhydride is reacted with aniline. The dye obtained dyes the animal fiber from acid bath in a very clear yellow.
CH143608D 1927-10-29 1928-10-15 Process for the preparation of an acidic wool dye. CH143608A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE143608X 1927-10-29
CH141320T 1928-10-15

Publications (1)

Publication Number Publication Date
CH143608A true CH143608A (en) 1930-11-15

Family

ID=25713682

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143608D CH143608A (en) 1927-10-29 1928-10-15 Process for the preparation of an acidic wool dye.

Country Status (1)

Country Link
CH (1) CH143608A (en)

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