CH240127A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

Info

Publication number
CH240127A
CH240127A CH240127DA CH240127A CH 240127 A CH240127 A CH 240127A CH 240127D A CH240127D A CH 240127DA CH 240127 A CH240127 A CH 240127A
Authority
CH
Switzerland
Prior art keywords
new
dye
parts
preparation
red
Prior art date
Application number
Other languages
German (de)
Inventor
Limited Imperial Ch Industries
Original Assignee
Ici Ltd
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 Ici Ltd filed Critical Ici Ltd
Publication of CH240127A publication Critical patent/CH240127A/en

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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
    • C09B29/34—Monoazo dyes prepared by diazotising and coupling from other coupling components
    • C09B29/36—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds
    • C09B29/3604—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom
    • C09B29/3647—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms
    • C09B29/3652—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms containing a 1,2-diazoles or hydrogenated 1,2-diazoles
    • C09B29/366—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms containing a 1,2-diazoles or hydrogenated 1,2-diazoles containing hydroxy-1,2-diazoles, e.g. pyrazolone

Landscapes

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

Description

  

  Verfahren zur Herstellung eines neuen     Nonoazofarbstoifes.       Gegenstand vorliegender     Erfindung    ist ein  Verfahren zur Herstellung eines neuen sauren       1VIonoazofarbstoffes,    welcher sich zum Färben  tierischer Fasern eignet.  



  Erfindungsgemäss wird der neue     Farbstoff     dadurch erhalten, dass man     3-N-Äthyl-N-ss-          chlorpropionylamino-4-methylanilin    dianotiert  und die erhaltene     Diazoniumverbindung    mit     2-          Acetylamino-8-naphthol-6-sulfonsäure    kuppelt.  



  Der neue Farbstoff stellt ein rotes Pulver  dar, das sich in warmem Wasser und in  konzentrierter Schwefelsäure unter Bildung  einer     gelblichroten    Färbung löst.  



  Der neue Farbstoff färbt Wolle aus einem  Schwefelsäure und Glaubersalz enthaltenden  Färbebad in roten Farbtönen, die sich durch  sehr gute Echtheitseigenschaften gegen starkes  Waschen, Wallen und Lichtechtheit aus  zeichnen.  



  Die Erfindung möge an Hand des nach  stehenden Beispiels erläutert sein. Die Teile  bedeuten Gewichtsteile.    <I>Beispiel:</I>  24 Teile     3-N-Äthyl-N=ss-chlorpropionyl-          amino-4-methylanilin    werden in 350 Teilen  Wasser und 25 Teilen 36     o/oiger    Salzsäure  gelöst. Hierauf werden 6,9 Teile     Natriumnitrit     zugesetzt. Die erhaltene     Diazoniumlösung    wird  nun unter Rühren einem Gemisch von 30,3 Tei  len     Natrium-2-acetylamino-8-naphthol-6-sul-          fonat,    350 Teilen Wasser und 28 Teilen       krist.        Natriumacetat    zugegeben.

   Sobald die  Kupplung beendet ist, fügt man 50 Teile       Natriumchlorid    hinzu und filtriert alsdann den  ausgeschiedenen     Farbstoff    ab, welcher schliess  lich mit 5     o/oiger    wässriger     Natriumchlorid-          lösung    gewaschen und getrocknet wird.



  Process for the preparation of a new nonoazo dye. The present invention relates to a process for the production of a new acidic 1Vionoazo dye which is suitable for dyeing animal fibers.



  According to the invention, the new dye is obtained by dianotating 3-N-ethyl-N-ß-chloropropionylamino-4-methylaniline and coupling the diazonium compound obtained with 2-acetylamino-8-naphthol-6-sulfonic acid.



  The new dye is a red powder that dissolves in warm water and concentrated sulfuric acid to form a yellowish-red color.



  The new dye dyes wool from a dyebath containing sulfuric acid and Glauber's salt in red shades, which are characterized by very good fastness properties against heavy washing, bulging and lightfastness.



  The invention may be explained using the example below. The parts mean parts by weight. <I> Example: </I> 24 parts of 3-N-ethyl-N = ß-chloropropionylamino-4-methylaniline are dissolved in 350 parts of water and 25 parts of 36% hydrochloric acid. 6.9 parts of sodium nitrite are then added. The resulting diazonium solution is then stirred into a mixture of 30.3 parts of sodium 2-acetylamino-8-naphthol-6-sulphonate, 350 parts of water and 28 parts of crystalline. Sodium acetate added.

   As soon as the coupling has ended, 50 parts of sodium chloride are added and the dyestuff which has separated out is then filtered off, which is finally washed with 5% aqueous sodium chloride solution and dried.

Claims (1)

# PATENTANSPRUCH: Verfahren zur Herstellung eines neuen 11Ionoazofarbstoffes, dadurch gekennzeichnet, dass man 3-N-Äthyl-N-R-chlorpropionylamino- 4-methylanilin dianotiert und die erhaltene Diazoniumverbindung mit 2-Acetylamino-8- naphthol-6-sulfonsäure kuppelt. Der neue Farbstoff stellt ein rotes Pulver dar, das sich in warmem Wasser und in kon zentrierter Schwefelsäure unter Bildung einer gelblichroten Färbung löst. # PATENT CLAIM: Process for the production of a new 11ionoazo dye, characterized in that 3-N-ethyl-N-R-chloropropionylamino-4-methylaniline is dianotized and the diazonium compound obtained is coupled with 2-acetylamino-8-naphthol-6-sulfonic acid. The new dye is a red powder that dissolves in warm water and in concentrated sulfuric acid to form a yellowish-red color. Der neue Farbstoff färbt Wolle aus einem Schwefelsäure und Glaubersalz enthaltenden Färbebad in roten Farbtönen, die sieh durch sehr gute Echtheitseigenschaften gegen starkes Waschen, Walken und Lichtechtheit aus zeichnen. The new dye dyes wool from a dyebath containing sulfuric acid and Glauber's salt in red shades, which are characterized by very good fastness properties against heavy washing, fulling and lightfastness.
CH240127D 1941-12-22 1942-12-21 Process for the preparation of a new monoazo dye. CH240127A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB240127X 1941-12-22
GB241241X 1941-12-24
CH237396T 1942-12-21

Publications (1)

Publication Number Publication Date
CH240127A true CH240127A (en) 1945-11-30

Family

ID=27177979

Family Applications (1)

Application Number Title Priority Date Filing Date
CH240127D CH240127A (en) 1941-12-22 1942-12-21 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH240127A (en)

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