CH124679A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

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Publication number
CH124679A
CH124679A CH124679DA CH124679A CH 124679 A CH124679 A CH 124679A CH 124679D A CH124679D A CH 124679DA CH 124679 A CH124679 A CH 124679A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
red
monoazo dye
diazotized
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 CH124679A publication Critical patent/CH124679A/en

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Description

  

  Verfahren zur Darstellung eines     11Lonoazofarbstoffes.            Es    wurde gefunden, dass man einen wert  vollen roten Farbstoff erhält, wenn man       diazotiertes        p-Toluolsulfon-methylamino-2-          amino-4-chlorbenzol    mit     2-OxynaphtaIin-3-          carbonsäure-5-chlor-2-methoxy-l-anilid    kup  pelt. Der Farbstoff kann sowohl in Sub  stanz, 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        Laugeechtheit    und sehr guter Licht  echtheit.

    



       Beispiel     6,2 Gewichtsteile     p-Toluolsulfon-methyl-          amiho-2-amino-4-chlorbenzolwerden        diazotiert.     Der     erhalteneBrei    wird eingerührt in eine Auf  lösung, bereitet aus 7;0 Gewichtsteilen 2-Oxy       naphtalin-3-carbonsäure-5-chlor-2-methoxy-l-          anilid,    400 Gewichtsteilen Wasser und 10       Gewichtsteilen    Natronlauge<B>50'</B>     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 lonoazo dye. It has been found that a valuable red dye is obtained if diazotized p-toluenesulfonemethylamino-2-amino-4-chlorobenzene with 2-oxynaphthalen-3-carboxylic acid 5-chloro-2-methoxy-1-anilide kup pelt. 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.

    



       Example 6.2 parts by weight of p-toluenesulfone-methyl-amiho-2-amino-4-chlorobenzene are diazotized. The resulting paste is stirred into a solution, prepared from 7.0 parts by weight of 2-oxy naphthalene-3-carboxylic acid 5-chloro-2-methoxy-l-anilide, 400 parts by weight of water and 10 parts by weight of sodium hydroxide solution <B> 50 '</ B> B6.



  A red precipitate is formed, 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 117ono- azofarbstoffes, dadurch gekennzeichnet, dass man diazotiertes p-Toluolsulfon-methylamino- 2-amino-4-chlorbenzol mit 2-Oxynaphtalin- 3-carbonsäure-5-clilor-2-methoxy-1-.anilid ver einigt. Der Farbstoff bildet getrocknet ein rotes Pulver und kann als roter Pigment farbstoff verwendet werden; er liefert auf der Faser rote Färbungen von vorzüglicher Echtheit. PATENT CLAIM: Process for the preparation of a 117ono- azo dye, characterized in that diazotized p-toluenesulfone-methylamino-2-amino-4-chlorobenzene with 2-oxynaphthalene-3-carboxylic acid-5-cliloro-2-methoxy-1-. anilide united. The dye forms a red powder when dried and can be used as a red pigment dye; 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. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that the dye is represented in the presence of a substrate.
CH124679D 1925-07-07 1926-07-07 Process for the preparation of a monoazo dye. CH124679A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE124679X 1925-07-07
CH122069T 1926-07-06

Publications (1)

Publication Number Publication Date
CH124679A true CH124679A (en) 1928-02-16

Family

ID=25709852

Family Applications (1)

Application Number Title Priority Date Filing Date
CH124679D CH124679A (en) 1925-07-07 1926-07-07 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH124679A (en)

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