CH111496A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH111496A
CH111496A CH111496DA CH111496A CH 111496 A CH111496 A CH 111496A CH 111496D A CH111496D A CH 111496DA CH 111496 A CH111496 A CH 111496A
Authority
CH
Switzerland
Prior art keywords
preparation
parts
monoazo dye
bright red
dye
Prior art date
Application number
Other languages
German (de)
Inventor
Chemische Fabrik Rohn Pratteln
Original Assignee
Chem Fab Rohner A G Pratteln
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 Chem Fab Rohner A G Pratteln filed Critical Chem Fab Rohner A G Pratteln
Publication of CH111496A publication Critical patent/CH111496A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/18—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides
    • C09B29/20—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides of the naphthalene series

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  Verfuhren zur Darstellung eines     1Honoazofarbstoffes.       Es wurde gefunden, dass ein wertvoller  roter Farbstoff entsteht, wenn man     diazo-          tiertes    1-     Methyl    - 2 -     amino    -4-     benzoylamino-          benzol    mit 2 .     3-Oxynaphthoesäureanilid    kup  pelt.  



  Der Farbstoff bildet getrocknet ein leuch  tend rotes Pulver, das sich in konzentrierter  Schwefelsäure mit leuchtend rotvioletter  Farbe löst. Er liefert sehr lichtechte     Farb-          lacke    und kann auch auf der Faser erzeugt       werden,    welche blaustichig rot angefärbt  wird.  



       Beispiel:          22,6    Teile     1-Methyl-2-amino-4-benzoyl-          aminobenzol    werden mit 25 Teilen Salzsäure  90       E6    und 200 Teilen Wasser gelöst und  mit einer Lösung von 7 Teilen Nitrit bei  5       diazotiert.    Die     Diazolösung    wird mit  essigsaurem Natron kongoneutral gestellt  und unter gutem Rühren in eine - aus  26,3 Teilen 2 . 3 -     Oxynaphthoesäureanilid,       15 Teilen Natronlauge 30 % und 20 Teilen       rizinusölsulfosaurem    Natron mit 400 Teilen  Wasser hergestellte Lösung eingegossen.

    Nach beendigter Kupplung wird , der aus  geschiedene Farbstoff filtriert, gewaschen  und vorteilhaft als Paste verwendet.



  Procedure for the preparation of a 1Honoazo dye. It has been found that a valuable red dye is formed when diazotized 1-methyl-2-amino -4-benzoylamino-benzene is mixed with 2. 3-oxynaphthoic anilide kup pelt.



  When dried, the dye forms a bright red powder that dissolves in concentrated sulfuric acid with a bright red-violet color. It provides very lightfast colored lacquers and can also be produced on the fiber, which is colored red with a bluish tinge.



       Example: 22.6 parts of 1-methyl-2-amino-4-benzoylaminobenzene are dissolved with 25 parts of hydrochloric acid 90 E6 and 200 parts of water and diazotized at 5 with a solution of 7 parts of nitrite. The diazo solution is made Congo-neutral with sodium acetate and, with thorough stirring, in one of 26.3 parts 2. 3 - Oxynaphthoic anilide, 15 parts of sodium hydroxide solution 30% and 20 parts of castor oil sulfonic acid of sodium with 400 parts of water poured the solution prepared.

    After the coupling is complete, the separated dye is filtered, washed and advantageously used as a paste.

Claims (1)

PATENTANSPRUCFI Verfahren zur Darstellung eines Mono azofarbstoffes, der getrocknet ein leuchtend rotes Pulver ist und sich in konzentrierter Schwefelsäure mit leuchtend rotvioletter Farbe löst, der sehr lichtechte Farblacke lie fert und der auch auf der Faser erzeugt werden kann, welche blaustichig rot ange färbt wird, dadurch gekennzeichnet, dass man diazotiertes 1-Methyl-2-amino-4-benzoyl- aminobenzol mit 2. 3-Oxynaphthoesäureanilid kombiniert. PATENT CLAIMS Process for the preparation of a mono azo dye which, when dried, is a bright red powder and dissolves in concentrated sulfuric acid with a bright red-violet color, which provides very lightfast colored varnishes and which can also be produced on the fiber, which is colored blue-tinged red characterized in that diazotized 1-methyl-2-amino-4-benzoyl-aminobenzene is combined with 2. 3-oxynaphthoic anilide.
CH111496D 1924-05-22 1924-05-22 Process for the preparation of a monoazo dye. CH111496A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH109706T 1924-05-22
CH111496T 1924-05-22

Publications (1)

Publication Number Publication Date
CH111496A true CH111496A (en) 1925-08-17

Family

ID=25707606

Family Applications (1)

Application Number Title Priority Date Filing Date
CH111496D CH111496A (en) 1924-05-22 1924-05-22 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH111496A (en)

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