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CH210500A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH210500A
CH210500A CH210500DA CH210500A CH 210500 A CH210500 A CH 210500A CH 210500D A CH210500D A CH 210500DA CH 210500 A CH210500 A CH 210500A
Authority
CH
Switzerland
Prior art keywords
preparation
greenish
monoazo dye
yellow
dye
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 CH210500A publication Critical patent/CH210500A/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
    • C09B29/34—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     bionoazo-Farbstoffes.       Vorliegende Erfindung bezieht sich auf  ein Verfahren zur Herstellung eines neuen       Monoazo-Farbstoffes.     



  Gemäss vorliegender     Erfindung    wird der  neue     Monoazo-Farbstoff    dadurch erhalten,  dass man     diazotiertes        N-(4'-Aminobenzoyl)-          N-dodecyl-2'-chloranilin    mit 1-(2' :     5'-Di-          chlor-4'-sulfophenyl)-3-methyl-5-pyrazolon     kuppelt.  



  Der neue Farbstoff     bildet    ein rötlich  gelbes Pulver, das sich in heissem Wasser zu       rötlich-gelben    Lösungen und in konzentrier  ter Schwefelsäure zu     grünlich-gelben    Lösun  gen auflöst. Er färbt Wolle in einem Säure  bad oder in einem Bad das 2 % Ammonium  azetat enthält in     grünlich-gelben    Tönungen  von sehr guter Wasch-, Walk- und Licht  echtheit.  



  <I>Beispiel:</I>  Eine     fein    verteilte Suspension von 45,1  Teilen des Hydrochlorids von N-(4'-Amino-         benzoyl)-N-dodecyl-2'-chloranilin    in 400  Teilen Wasser, das 15 Teile 36%iger Salz  säure enthält,     wird        durch    Zugabe von 6,9  Teilen     Natriumnitrit        diazotiert.    Die Lösung  der     Diazoverbindung        wird,    gegebenenfalls  nach Filtration, auf<B>5-10'</B> C abgekühlt,  und einer     gekühlten    wässerigen Lösung von.

    32,3 Teilen 1-(2' :     5'-Dichlor-4'-sulfophenyl)-          3-methyl-5-pyrazolon,    die einen Überschuss  an     Natriumkarbonat    enthält beigemischt. Die  Kupplung erfolgt rasch. Der neue Farbstoff       wird    durch Zugabe von 5 %     Natriumchlorid          (Volumgewicht)    separiert, gefiltert und ge  trocknet.



  Process for the preparation of a bionoazo dye. The present invention relates to a process for the preparation of a new monoazo dye.



  According to the present invention, the new monoazo dye is obtained by reacting diazotized N- (4'-aminobenzoyl) -N-dodecyl-2'-chloroaniline with 1- (2 ': 5'-dichloro-4'-sulfophenyl ) -3-methyl-5-pyrazolone couples.



  The new dye forms a reddish yellow powder, which dissolves in hot water to reddish yellow solutions and in concentrated sulfuric acid to greenish yellow solutions. It dyes wool in an acid bath or in a bath that contains 2% ammonium acetate in greenish-yellow shades with very good wash, milled and lightfastness.



  <I> Example: </I> A finely divided suspension of 45.1 parts of the hydrochloride of N- (4'-amino-benzoyl) -N-dodecyl-2'-chloroaniline in 400 parts of water, which contains 15 parts of 36% iger hydrochloric acid is diazotized by adding 6.9 parts of sodium nitrite. The solution of the diazo compound, optionally after filtration, is cooled to 5-10 ° C., and a cooled aqueous solution of.

    32.3 parts of 1- (2 ': 5'-dichloro-4'-sulfophenyl) -3-methyl-5-pyrazolone, which contains an excess of sodium carbonate, are added. The coupling is quick. The new dye is separated by adding 5% sodium chloride (volume weight), filtered and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Monoazo-Farbstoffes, dadurch gekennzeich net, dass man diazotiertes N-(4'-Amino- benzoyl)-N-dodecyl-2'-chloranilin mit 1- (2' : 5'-Dichlor-4'-sulfophenyl)-3-methyl-5- pyrazolon kuppelt. Der neue Farbstoff bildet ein rötlich gelbes Pulver, das sich in heissem Wasser zu rötlich-gelben Lösungen und in konzentrier ter Schwefelsäure zu grünlich-gelben Lösun gen auflöst. PATENT CLAIM: Process for the preparation of a new monoazo dye, characterized in that diazotized N- (4'-amino-benzoyl) -N-dodecyl-2'-chloroaniline with 1- (2 ': 5'-dichloro-4 '-sulfophenyl) -3-methyl-5-pyrazolone couples. The new dye forms a reddish yellow powder, which dissolves in hot water to reddish yellow solutions and in concentrated sulfuric acid to greenish yellow solutions. Er färbt Wolle in einem Säure bad oder in einem Bad, das 2 ,wo Ammonium- azetat enthält in grünlich-gelben Tönungen von sehr guter Wasch-, Walk- und Licht echtheit. It dyes wool in an acid bath or in a bath that contains ammonium acetate in greenish-yellow shades of very good fastness to washing, fulling and light.
CH210500D 1937-05-26 1938-05-05 Process for the preparation of a monoazo dye. CH210500A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB210500X 1937-05-26
CH207510T 1938-05-05

Publications (1)

Publication Number Publication Date
CH210500A true CH210500A (en) 1940-07-15

Family

ID=25724415

Family Applications (1)

Application Number Title Priority Date Filing Date
CH210500D CH210500A (en) 1937-05-26 1938-05-05 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH210500A (en)

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