CH237725A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

Info

Publication number
CH237725A
CH237725A CH237725DA CH237725A CH 237725 A CH237725 A CH 237725A CH 237725D A CH237725D A CH 237725DA CH 237725 A CH237725 A CH 237725A
Authority
CH
Switzerland
Prior art keywords
new
dye
parts
preparation
sulfuric acid
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 CH237725A publication Critical patent/CH237725A/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
    • C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/16—Naphthol-sulfonic acids
    • 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

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

Description

  

      -Verfahren    zur Herstellung eines neuen     blonoazofarbstoffes.       Gegenstand     vorliegender        Erfindung    ist ein  Verfahren zur Herstellung eines neuen, sauren,  zum Färben tierischer Fasern geeigneten       Monoazofarbstoffes.     



  Gemäss der Erfindung     wird    der neue     Mo.          noazofarbstoff    erhalten, indem man     4-Amino-          1-N-äthyl-m-chlorpropionanilid        diazotiert    und  die erhaltene     Diazoverbindung    mit     1-1\Taphthol-          4-sulfonsäure    kuppelt.  



  Der neue     Farbstoff    stellt ein rotes Pulver  dar, welches in warmem Wasser mit gelblich  roter Farbe und in     konz.    Schwefelsäure mit  roter Farbe löslich ist. Er färbt Wolle aus  einem Schwefelsäure und Glaubersalz enthal  tenden Färbebad in scharlachroten Tönen, die  sich durch gute Echtheitseigenschaften gegen  starkes Waschen und     Walken    und durch gute  Lichtechtheit auszeichnen.  



  Die Erfindung sei an Hand des nach  stehenden Beispiels erläutert, ohne indessen  darauf beschränkt zu sein; die     Teile    bedeuten  Gewichtsteile.         Beispiel:     22,65 Teile     4-Amino-l-N-äthyl-co-chlor-          propionanilid    werden in einem Gemisch von  320     Teilen    Wasser und 25 Teilen     36 /oiger     Salzsäure gelöst und hierauf mit einer Lösung  von 6,9     Teilen        Natriumnitrit    in 50 Teilen  Wasser versetzt.

   Die Lösung der so erhaltenen       Diazoverbindung    wird auf 5-10o C gekühlt  und     allmählich    in eine ähnlich gekühlte Lösung  von 26,9 Teilen     Natrium-l-naphthol-4-sulfonat     in 360 Teilen Wasser, enthaltend 21 Teile  wasserfreies     Natriumcarbonat    und 80 Teile       Natriumchlorid,    -eingerührt. Nach beendeter  Kupplung wird der so erhaltene, ausgefällte       Farbstoff        abfiltriert,    mit     20o/oigem        wässrigem          Natriumchlorid    gewaschen und bei     "00-60o    C  getrocknet.



      -Process for the production of a new blonoazo dye. The present invention relates to a process for the preparation of a new, acidic monoazo dye suitable for dyeing animal fibers.



  According to the invention, the new monoazo dye is obtained by diazotizing 4-amino-1-N-ethyl-m-chloropropionanilide and coupling the diazo compound obtained with 1-1 \ taphthol-4-sulfonic acid.



  The new dye is a red powder, which in warm water with a yellowish red color and in conc. Sulfuric acid is soluble with red color. It dyes wool from a dyebath containing sulfuric acid and Glauber's salt in scarlet shades, which are characterized by good fastness properties against heavy washing and tumbling and good lightfastness.



  The invention will be explained with reference to the following example, without, however, being restricted thereto; the parts mean parts by weight. Example: 22.65 parts of 4-amino-1N-ethyl-co-chloropropionanilide are dissolved in a mixture of 320 parts of water and 25 parts of 36% hydrochloric acid and then with a solution of 6.9 parts of sodium nitrite in 50 parts of water offset.

   The solution of the diazo compound thus obtained is cooled to 5-10o C and gradually poured into a similarly cooled solution of 26.9 parts of sodium 1-naphthol-4-sulfonate in 360 parts of water, containing 21 parts of anhydrous sodium carbonate and 80 parts of sodium chloride, stirred in. After the coupling has ended, the precipitated dye obtained in this way is filtered off, washed with 20% aqueous sodium chloride and dried at 00-60 ° C.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen 14I' onoazofarbstoffes, dadurch gekennzeichnet, dass man 4-Amino-l-N-äthyl-co-chlorpropion- anilid diazotiert und die erhaltene Diazover- bindung mit 1-Naphthol-4-sulfonsäure kuppelt. PATENT CLAIM: Process for the production of a new 14I 'onoazo dye, characterized in that 4-amino-1-N-ethyl-co-chloropropionic anilide is diazotized and the resulting diazo compound is coupled with 1-naphthol-4-sulfonic acid. Der neue Farbstoff stellt ein rotes Pulver dar, welches in warmem Wasser mit gelblich roter Farbe und in konz. Schwefelsäure mit roter Farbe löslich ist. Er färbt )Tolle aus einem Schwefelsäure und Glaubersalz enthal tenden Färbebad in scharlachroten Tönen, die sich durch gute Echtheitseigenschaften gegen starkes Waschen und Walken und durch gute Liehtechtheit auszeichnen. The new dye is a red powder, which in warm water with a yellowish red color and in conc. Sulfuric acid is soluble with red color. He dyes) great dyebaths made from a sulfuric acid and Glauber's salt in scarlet shades, which are characterized by good fastness properties against heavy washing and tumbling and good lightfastness.
CH237725D 1943-12-08 1943-12-08 Process for the preparation of a new monoazo dye. CH237725A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH237725T 1943-12-08
CH231066T 1943-12-08

Publications (1)

Publication Number Publication Date
CH237725A true CH237725A (en) 1945-05-15

Family

ID=25727537

Family Applications (1)

Application Number Title Priority Date Filing Date
CH237725D CH237725A (en) 1943-12-08 1943-12-08 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH237725A (en)

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