CH124676A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

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Publication number
CH124676A
CH124676A CH124676DA CH124676A CH 124676 A CH124676 A CH 124676A CH 124676D A CH124676D A CH 124676DA CH 124676 A CH124676 A CH 124676A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
red
monoazo dye
amino
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 CH124676A publication Critical patent/CH124676A/en

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Description

  

  Verfahren zur Darstellung eines     Nonoazofarbstoffes.       Es     wurde    gefunden, dass man einen wert  vollen roten Farbstoff erhält, wenn man       diazotiertes        p-Toluolsulfon-tnethylamino-2-          amino-4-chlorbenzol        (p-Toluolsulfo-2-amino-          4-chlormethylanilid)    mit     2-Oxynaphtalin-3-          carbonsäure    -     ss    -     naphtylamid    kuppelt. Der  Farbstoff kann sowohl in Substanz, als auch  auf einer Grundlage erzeugt werden.

   Der  Farbstoff bildet getrocknet ein rotes Pulver;  auf der Faser     liefert    er rote Färbungen von  vorzüglicher Wasch-, Soda- und     Laugeecht-          heit    und sehr guter Lichtechtheit.  



  <I>Beispiel</I>  6,2 Gewichtsteile     p-Toluolsulfon-methyl-          amino-2-amino-4-chlorbenzol    werden     diazo-          tiert.    Der erhaltene Brei     wird        eingerührt    in  eine Auflösung, bereitet aus 7,5 Gewichts  teilen     2-Oxynaphtalin-3-carbonsäure-ss-naph-          tylamid,    400 Gewichtsteilen Wasser und  10 Gewichtsteilen Natronlauge 40'     Pre.     



  Es entsteht ein roter Niederschlag, der       abfiltriert    und getrocknet werden kann.  Der Farbstoff kann als roter Pigment-         farbstoff    verwendet werden; er liefert auf  der Faser rote Färbungen von vorzüglicher  Echtheit.



  Process for the preparation of a nonoazo dye. It has been found that a valuable red dye is obtained if diazotized p-toluenesulfone-methylamino-2-amino-4-chlorobenzene (p-toluenesulfo-2-amino-4-chloromethylanilide) with 2-oxynaphthalene-3-carboxylic acid - ss - naphthylamide couples. The dye can be produced both in substance and on a basis.

   The dye forms a red powder when dried; On the fiber, it provides red dyeings with excellent wash, soda and lye fastness and very good light fastness.



  <I> Example </I> 6.2 parts by weight of p-toluenesulfone-methyl-amino-2-amino-4-chlorobenzene are diazotized. The resulting paste is stirred into a solution prepared from 7.5 parts by weight of 2-oxynaphthalene-3-carboxylic acid-ß-naphthylamide, 400 parts by weight of water and 10 parts by weight of 40 'Pre sodium hydroxide solution.



  A red precipitate forms, which can be filtered off and dried. The dye can be used as a red pigment dye; it produces red dyeings of excellent fastness on the fiber.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Mono- azofarbstoffes, dadurch gekennzeichnet, dass man diazotiertes p-Toluolsulfon-methyla.mino- 2-amino-4-chlorbenzol mit 2-Oxynaphtalin-3- carbonsäure - ss - naphtylamid vereinigt. Der Farbstoff bildet getrocknet ein rotes Pulver und kann als roter Pigmentfarbstoff ver wendet werden; er liefert auf der Faser rote Färbungen von vorzüglicher Echtheit. PATENT CLAIM: Process for the preparation of a monoazo dye, characterized in that diazotized p-toluenesulfone-methyla.mino-2-amino-4-chlorobenzene is combined with 2-oxynaphthalene-3-carboxylic acid - ss - naphthylamide. When dried, the dye forms a red powder and can be used as a red pigment; it produces red dyeings of excellent fastness on the fiber. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass die Darstellung des Farbstoffes in Gegenwart eines Substrates erfolgt. SUBCLAIM: Method according to claim, characterized in that the dye is displayed in the presence of a substrate.
CH124676D 1925-07-07 1926-07-07 Process for the preparation of a monoazo dye. CH124676A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE124676X 1925-07-07
CH122069T 1926-07-06

Publications (1)

Publication Number Publication Date
CH124676A true CH124676A (en) 1928-02-16

Family

ID=25709849

Family Applications (1)

Application Number Title Priority Date Filing Date
CH124676D CH124676A (en) 1925-07-07 1926-07-07 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH124676A (en)

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