CH143609A - Process for the preparation of an acidic wool dye. - Google Patents

Process for the preparation of an acidic wool dye.

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Publication number
CH143609A
CH143609A CH143609DA CH143609A CH 143609 A CH143609 A CH 143609A CH 143609D A CH143609D A CH 143609DA CH 143609 A CH143609 A CH 143609A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
acidic
wool dye
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 CH143609A publication Critical patent/CH143609A/en

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Description

  

  Verfahren zur     Darstellung    eines sauren     Wollfarbstoffes.            Gegenstand    des     vorliegenden    Zusatzpaten  tes ist ein Verfahren zur     Darstellung    eines  sauren     Wollfarbstoffes,        da-durch    gekenn  zeichnet, dass man     4-Aminon.aphtalsäurean-          hydrid    mit     4-tollzidin-sulfosaurem    Natrium       ulllset7t.     



       Beispiel:     <B>10</B> Gewichtsteile     4-Aminonaphtalsäure-          anhydrid    werden mit 10 Gewichtsteilen 4  toluidin-d-sulfos,aurem Natrium und 200  Raumteilen     'NjTasser    am     Rückflusskühler    so       lange    zum     Sieden    erhitzt, bis die Farbstoff  bildung beendet ist;

   dann wird     abgesaugt          und    der Farbstoff aus der wässerigen Lö-         sung    in üblicher Weise.     zuni    Beispiel durch       Aussalzen,        gewonnen.    Er färbt aus saurem  Bade die tierische Faser in einem klaren  G     elb.  



  Process for the preparation of an acidic wool dye. The subject matter of the present additional patent is a process for the preparation of an acidic wool dye, characterized by the fact that 4-aminonaphthalic anhydride is eliminated with 4-tazidine-sulfonic acid sodium.



       Example: 10 parts by weight of 4-aminonaphthalic anhydride are heated to boiling with 10 parts by weight of 4 toluidine-d-sulfos, auric sodium and 200 parts by volume of NJTasser on the reflux condenser until the dye formation has ended;

   Then it is suctioned off and the dye is removed from the aqueous solution in the usual way. For example, obtained by salting out. It dyes the animal fibers a clear yellow from an acidic bath.

Claims (1)

PATE.NTANSSPRUCH: Verfahren zür Darstellung eines sauren Wollfarbstoffes, dadurch gekennzeichnet, d.ass man 4-Aminonaphtalsäureanhydrid mit 4-toluidin-S-sulfosaurem Natrium umsetzt. Der Farbstoff färbt aus saurem Bade die tierische Faser in einem klaren Gelb. PATE.NTANSSPRUCH: A process for the preparation of an acidic wool dye, characterized in that 4-aminonaphthalic anhydride is reacted with 4-toluidine-S-sulfonic acid sodium. The dye dyes the animal fiber in a clear yellow from an acid bath.
CH143609D 1927-10-29 1928-10-15 Process for the preparation of an acidic wool dye. CH143609A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE143609X 1927-10-29
CH141320T 1928-10-15

Publications (1)

Publication Number Publication Date
CH143609A true CH143609A (en) 1930-11-15

Family

ID=25713683

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143609D CH143609A (en) 1927-10-29 1928-10-15 Process for the preparation of an acidic wool dye.

Country Status (1)

Country Link
CH (1) CH143609A (en)

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