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CH124677A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

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Publication number
CH124677A
CH124677A CH124677DA CH124677A CH 124677 A CH124677 A CH 124677A CH 124677D A CH124677D A CH 124677DA CH 124677 A CH124677 A CH 124677A
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 CH124677A publication Critical patent/CH124677A/en

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Description

  

  Verfahren zur Darstellung eines     Monoazofarbstoffes.       Es wurde gefunden, dass man einen wert  vollen roten Farbstoff erhält,     wenn    man       diazotiertes        p-T'oluolsulfon-methylamino-2-          amino-4-chlorbenzol        (p-Toluolsulfo-2-amino-          4-chlormethylanilid)    mit     2-Oxynaphtalin-3-          carbonsäure    - a -     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 diano  tiert. Der erhaltene Brei wird eingerührt in  eine Auflösung, bereitet aus 7,5 Gewichts  teilen     2-Oxynaphtalin-3-carbonsäure-a-naph-          tylamid,    400 Gewichtsteilen Wasser und  10 Gewichtsteilen Natronlauge 40'     B6.     



  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 monoazo dye. It has been found that a valuable red dye is obtained if diazotized p-toluenesulfonemethylamino-2-amino-4-chlorobenzene (p-toluenesulfo-2-amino-4-chloromethylanilide) with 2-oxynaphthalene-3 - carboxylic acid - a - naphthylamide couples. The dye can be produced both in substance and on a base.

   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 diano tated. The resulting paste is stirred into a dissolution prepared from 7.5 parts by weight of 2-oxynaphthalene-3-carboxylic acid-a-naphthylamide, 400 parts by weight of water and 10 parts by weight of sodium hydroxide solution 40 'B6.



  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 dianotiertes p-Toluolsulfon-methylamino- 2-amino-4-chlorbenzol mit 2-Oxynaphtalin-3- carbonsäure - a - 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. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass die Darstellung des Farbstoffes in Gegenwart eines Substrates erfolgt. PATENT CLAIM: Process for the preparation of a mono azo dye, characterized in that dianotated p-toluenesulfone-methylamino-2-amino-4-chlorobenzene is combined with 2-oxynaphthalene-3-carboxylic acid - a - naphthylamide. When dried, the dye forms a red powder and can be used as a red pigment; it provides red dyeings on the fiber of excellent fastness. SUBCLAIM: Method according to claim, characterized in that the dye is displayed in the presence of a substrate.
CH124677D 1925-07-07 1926-07-07 Process for the preparation of a monoazo dye. CH124677A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE124677X 1925-07-07
CH122069T 1926-07-06

Publications (1)

Publication Number Publication Date
CH124677A true CH124677A (en) 1928-02-16

Family

ID=25709850

Family Applications (1)

Application Number Title Priority Date Filing Date
CH124677D CH124677A (en) 1925-07-07 1926-07-07 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH124677A (en)

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