CH116276A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH116276A
CH116276A CH116276DA CH116276A CH 116276 A CH116276 A CH 116276A CH 116276D A CH116276D A CH 116276DA CH 116276 A CH116276 A CH 116276A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
dye
dianotized
naphthylamide
Prior art date
Application number
Other languages
German (de)
Inventor
Farbwerke Vorm Meiste Bruening
Original Assignee
Hoechst 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 Hoechst Ag filed Critical Hoechst Ag
Publication of CH116276A publication Critical patent/CH116276A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung eines     Azofarbstoffesr       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines     Azofarb-          stoffes,    dadurch gekennzeichnet, dass man       2-Amirio-4-benzoylamino-l-anisol    dianotiert  und die     Diazolösung    mit 2     #        3-Oxynaphthoe-          säure-p-naphthylamid    kuppelt.  



  Der Farbstoff lässt sich sowohl in Sub  stanz wie auf Substraten erzeugen. Er bildet  ein dunkelrotes Pulver, das sich mit blau  violetter Farbe in konzentrierter Schwefel  säure löst. Auf Baumwolle erzeugt entsteht  eine schöne bordeauxrote Färbung von aus  gezeichneten Echtheitseigenschaften.  



       Beispiel:     242 Gewichtsteile     2-Amino-4-benzoylamino-          1-anisol    werden mit 70 Gewichtsteilen Na  triumnitrit in üblicher Weise dianotiert und  die     Diazolösung    reit einer alkalischen Auf  lösung von 313 Gewichtsteilen 2     #    3-Oxy-         rraphthoesä(ire-ss-naphthylamid    mit oder ohne  Zusatz eines Substrates wie z. B. Schwerspat  gekuppelt. Der bordeauxrote Niederschlag kann       abfiltriert,    gewaschen und getrocknet werden.



  Process for the preparation of an azo dye The subject of this additional patent is a process for the preparation of an azo dye, characterized in that 2-amirio-4-benzoylamino-1-anisole is dianotized and the diazo solution with 2 # 3-oxynaphthoic acid-p-naphthylamide clutch.



  The dye can be produced both in substance and on substrates. It forms a dark red powder that dissolves in concentrated sulfuric acid with a blue-violet color. Produced on cotton, a beautiful burgundy color with excellent fastness properties is created.



       Example: 242 parts by weight of 2-amino-4-benzoylamino-1-anisole are dianotized with 70 parts by weight of sodium nitrite in the usual way and the diazo solution is an alkaline solution of 313 parts by weight of 2 # 3-oxyrraphthoesä (ire-ss-naphthylamide with or coupled without the addition of a substrate such as, for example, barite The burgundy precipitate can be filtered off, washed and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Azofarb- stoffes, dadurch gekennzeichnet; dass man 2-Amino-4-benzoylamino-l-anisol dianotiert und die Diazolösung mit 2 # 3-Oxynaphthoe- säure-p-naphthylamid kuppelt. Der Farbstoff bildet ein dunkelrotes Pul ver, das sich mit blauvioletter Farbe in konzentrierter Schwefelsäure löst. Auf Baum wolle erzeugt entsteht eine schöne bordeaux rote Färbung von ausgezeichneten Echtheits eigenschaften. PATENT CLAIM: A method for the preparation of an azo dye, characterized; that 2-amino-4-benzoylamino-1-anisole is dianotized and the diazo solution is coupled with 2 # 3-oxynaphthoic acid-p-naphthylamide. The dye forms a dark red powder that dissolves in concentrated sulfuric acid with a blue-violet color. When produced on cotton, it produces a beautiful burgundy red color with excellent fastness properties.
CH116276D 1924-03-29 1925-03-24 Process for the preparation of an azo dye. CH116276A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE116276X 1924-03-29
CH114916T 1925-03-24

Publications (1)

Publication Number Publication Date
CH116276A true CH116276A (en) 1926-08-16

Family

ID=29402936

Family Applications (1)

Application Number Title Priority Date Filing Date
CH116276D CH116276A (en) 1924-03-29 1925-03-24 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH116276A (en)

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