CH240128A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

Info

Publication number
CH240128A
CH240128A CH240128DA CH240128A CH 240128 A CH240128 A CH 240128A CH 240128D A CH240128D A CH 240128DA CH 240128 A CH240128 A CH 240128A
Authority
CH
Switzerland
Prior art keywords
sep
new
dye
red
preparation
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 CH240128A publication Critical patent/CH240128A/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     Nonoazofarbstoffes.       Gegenstand     vorliegender    Erfindung ist ein  Verfahren zur Herstellung eines neuen sauren       Monoazofarbstoffes,    welcher sich zum Färben  tierischer     Fasern    eignet.  



  Erfindungsgemäss     wird    der neue Farbstoff  dadurch erhalten, dass man     p-N-Cyclohexyl-          N-@-chlorpropionylaminoanilin        diazotiert    und  die erhaltene     Diazoniumverbindung    mit     2-Ace-          tylamino-8-naphthol-6-sulfonsäure    kuppelt.  



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



  Der neue     Farbstoff    färbt Wolle aus saurem  Färbebade in     gelblichroten    Farbtönen, die  sich durch sehr gute Echtheitseigenschaften  gegen starkes Waschen,     Walken    und Licht  echtheit auszeichnen.  



  Die Erfindung möge an Hand des nach  stehenden Beispiels erläutert sein. Die Teile  bedeuten Gewichtsteile.         Beispiel:     28,05 Teile     p-N-Cyclohexyl-N-ss-chlorpro-          pionylaminoanilin    werden durch Erwärmen       in        150        Teilen        Wasser        und        35        Teilen        36        %-          iger    Salzsäure gelöst,

   worauf weitere 150 Teile  Wasser zugesetzt     werden.    Die     Diazotierung     erfolgt bei 20-25o C durch Zugabe von  7 Teilen     Natriumnitrit.    Die     filtrierte    Lösung  der     Diazoniumverbindung    wird auf 10-15  C  gekühlt und unter Rühren in ein ähnlich ab  gekühltes Gemisch von 30,3 Teilen     Natrium-          2-acetylamino-8-naphthol-6-sulfonat,    400 Tei  len Wasser und 45 Teilen     krist.        Natriumacetat     eingetragen. Es wird andauernd gerührt, bis  die Kupplung beendet ist.

   Der Farbstoff wird  alsdann durch Zugabe der erforderlichen  Menge     Natriumchlorid    ausgefällt,     abfiltriert     und getrocknet.



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



  According to the invention, the new dye is obtained by diazotizing p-N-cyclohexyl-N - @ - chloropropionylaminoaniline and coupling the diazonium compound obtained with 2-acetylamino-8-naphthol-6-sulfonic acid.



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



  The new dye dyes wool from an acid dye bath in yellowish-red shades, which are characterized by very good fastness properties against heavy washing, fulling and light fastness.



  The invention may be explained using the example below. The parts mean parts by weight. Example: 28.05 parts of p-N-cyclohexyl-N-ss-chloropropionylaminoaniline are dissolved in 150 parts of water and 35 parts of 36% hydrochloric acid by heating,

   whereupon another 150 parts of water are added. Diazotization takes place at 20-25 ° C. by adding 7 parts of sodium nitrite. The filtered solution of the diazonium compound is cooled to 10-15 C and, while stirring, in a similarly cooled mixture of 30.3 parts of sodium 2-acetylamino-8-naphthol-6-sulfonate, 400 parts of water and 45 parts of crystalline. Sodium acetate entered. The mixture is continuously stirred until the coupling has ended.

   The dye is then precipitated by adding the required amount of sodium chloride, filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Monoazofarbstoffes, dadurch gekennzeichnet, EMI0002.0001 dass <SEP> man <SEP> p=.N-Cycloliexyl-N-@-chlorpropionyl aminoanilin <SEP> dianotiert <SEP> und <SEP> die <SEP> erhaltene <SEP> Di azoniumverbindung <SEP> mit <SEP> 2-Acety <SEP> lamino-8-napli tbol-6-sulfonsäure <SEP> kuppelt. <tb> Der <SEP> neue <SEP> Farbstoff <SEP> stellt <SEP> ein <SEP> brü,unlich rotes <SEP> Pulver <SEP> dar, <SEP> das <SEP> sich <SEP> in <SEP> warmem <SEP> Wasser <tb> und <SEP> in <SEP> konzentrierter <SEP> Schwefelsäure <SEP> unter <tb> Bildung <SEP> einer <SEP> gelblichroten <SEP> Färbung <SEP> lüst. PATENT CLAIM: Process for the production of a new monoazo dye, characterized in that EMI0002.0001 that <SEP> one <SEP> p=.N-Cycloliexyl-N-@-chlorpropionyl aminoaniline <SEP> dianotates <SEP> and <SEP> the <SEP> obtained <SEP> diazonium compound <SEP> with <SEP> 2 -Acety <SEP> lamino-8-napli tbol-6-sulfonic acid <SEP> couples. <tb> The <SEP> new <SEP> dye <SEP> represents <SEP> a <SEP> brittle, unbelievably red <SEP> powder <SEP>, <SEP> the <SEP> <SEP> in <SEP > warm <SEP> water <tb> and <SEP> in <SEP> concentrated <SEP> sulfuric acid <SEP> under <tb> Formation <SEP> of a <SEP> yellowish red <SEP> color <SEP> lust. Der neue Farbstoff färbt Wolle aus sau rem Färbebade iii gelblichroten Farbtönen, die sich durch sehr gute Echtheitseigenschaf- ten gegen starkes Wasclieii, Walken und Lichtechtheit auszeichnen. The new dye dyes wool from an acid dyebath iii yellowish-red shades that are characterized by very good fastness properties against heavy washing, fulling and lightfastness.
CH240128D 1941-12-22 1942-12-21 Process for the preparation of a new monoazo dye. CH240128A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB240128X 1941-12-22
GB241241X 1941-12-24
CH237396T 1942-12-21

Publications (1)

Publication Number Publication Date
CH240128A true CH240128A (en) 1945-11-30

Family

ID=27177980

Family Applications (1)

Application Number Title Priority Date Filing Date
CH240128D CH240128A (en) 1941-12-22 1942-12-21 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH240128A (en)

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