CH121708A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH121708A
CH121708A CH121708DA CH121708A CH 121708 A CH121708 A CH 121708A CH 121708D A CH121708D A CH 121708DA CH 121708 A CH121708 A CH 121708A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
dye
weight
parts
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 CH121708A publication Critical patent/CH121708A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Description

  

  Verfahren     zur    Darstellung eines     Azofarbstoifes.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines     Azofarb-          stoffes    aus     4(p-Toluolsulfonmethylamino)-1-          methoxy-2-aminobenzol    und     2-Oxynaphtalin-          3-karbonsäure-5'-chlor-2'-methoxyanilid.     



  <I>Beispiel:</I>  6.12 Gewichtsteile 4 - (p -     Toluolsulfon-          methylarnino)-1-methoxy-2-aminobenzol    wer  den gelöst in etwa 50 Gewichtsteilen Wasser  und 7     (xewichtsteilen    Salzsäure 20      B6    und mit  1,4     Gewichtsteilen.        Natriumnitrit        diazotiert.     



  Die     Diazoverbindung    wird vereinigt mit  einer     Auflösung    von 7.2 Gewichtsteilen 2-         Oxynaphtalin    - 3     -karbonsäure    - 5'-     chlor-2'-me-          thoxyanilid    in etwa 400 Gewichtsteilen Was  ser und 10 Gewichtsteilen Natronlauge von  40       B6.    Es entsteht ein bordeauxroter Nieder  schlag, der     abfiltriert    und getrocknet werden  kann.  



  Der Farbstoff ist ein bordeauxrotes Pulver,  das sich in konzentrierter Schwefelsäure mit  blauroter Farbe löst.



  Process for the preparation of an azo dye. The subject of this additional patent is a process for the preparation of an azo dye from 4 (p-toluenesulfonmethylamino) -1-methoxy-2-aminobenzene and 2-oxynaphthalene-3-carboxylic acid 5'-chloro-2'-methoxyanilide.



  <I> Example: </I> 6.12 parts by weight of 4 - (p - toluenesulfonemethylamino) -1-methoxy-2-aminobenzene are dissolved in about 50 parts by weight of water and 7 (x parts by weight of hydrochloric acid 20 B6 and 1.4 parts by weight. Sodium nitrite diazotized.



  The diazo compound is combined with a dissolution of 7.2 parts by weight of 2-oxynaphthalene - 3 -carboxylic acid - 5'-chloro-2'-methoxyanilide in about 400 parts by weight of water and 10 parts by weight of 40 B6 sodium hydroxide solution. A burgundy precipitate is formed, which can be filtered off and dried.



  The dye is a burgundy red powder that dissolves in concentrated sulfuric acid with a blue-red color.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Darstellung eines Azofarb- stoffes von der Formel: EMI0001.0026 dadurch gekennzeichnet, dass man 4(p-Toluol- sulfonmethylarnino)-1-methoxy-2-aminobenzol diazotiert und die Diazoverbindung mit 2- Oxynaphtalin- 3- karbonsäure - 5'- chlor- 2'- me- thoxyanilid kuppelt. Der Farbstoff ist ein bordeauxrotes Pulver, das sich in konzentrierter Sehwefelsäure mit blauroter Farbe löst. <B> PATENT CLAIM: </B> Process for the preparation of an azo dye of the formula: EMI0001.0026 characterized in that 4 (p-toluenesulfonmethylamino) -1-methoxy-2-aminobenzene is diazotized and the diazo compound is coupled with 2-oxynaphthalene-3-carboxylic acid - 5'-chloro-2'-methoxyanilide. The dye is a burgundy red powder that dissolves in concentrated sulfuric acid with a blue-red color. Der Farbstoff kann in Substanz, wie auf einer Grundlage e#zeubt werden. The dye can be produced in substance, such as on a basis.
CH121708D 1925-03-24 1926-07-22 Process for the preparation of an azo dye. CH121708A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH114916T 1925-03-24
DE121708X 1925-07-25

Publications (1)

Publication Number Publication Date
CH121708A true CH121708A (en) 1927-07-16

Family

ID=25708423

Family Applications (1)

Application Number Title Priority Date Filing Date
CH121708D CH121708A (en) 1925-03-24 1926-07-22 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH121708A (en)

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