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CH225367A - Process for the preparation of a water-soluble monoazo dye. - Google Patents

Process for the preparation of a water-soluble monoazo dye.

Info

Publication number
CH225367A
CH225367A CH225367DA CH225367A CH 225367 A CH225367 A CH 225367A CH 225367D A CH225367D A CH 225367DA CH 225367 A CH225367 A CH 225367A
Authority
CH
Switzerland
Prior art keywords
sep
water
preparation
monoazo dye
soluble
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH225367A publication Critical patent/CH225367A/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
    • C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
    • C09B29/28—Amino naphthols
    • C09B29/30—Amino naphtholsulfonic acid

Landscapes

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

Description

  

  Verfahren zur Herstellung eines wasserlöslichen     Honoazofarbstoffes.       Es wurde gefunden, dass wasserlösliche       Monoazofarbstoffe,    die sich zum Färben von  Wolle und Seide eignen, erhalten werden,  wenn     Diazoverbindungen    aus     o-Amino-di-          phenyläthern,    in denen mindestens drei.

       Kern-          wasserstoffatome    durch Chloratome und       bezw.    oder     Alkyl-    oder     Halogenalkylreste          substituiert    sind, mit     1-Acylamino--8-oxy-          naphthalin-disulfonsäuren    gekuppelt werden,  Die so erhaltenen     Farbstoffe    geben auf  Wolle und Seide aus saurem oder neutralem  Bade rote Färbungen,     die    sich durch reine  und leuchtende Farbtöne, Bowie durch       hervorragende        Echtheitseigensehaften    aus  zeichnen.  



  Vorliegendes Patent bezieht sich     nun    auf  ein Verfahren zur Herstellung eines wasser  löslichen     Monoazofarbstoffes.,    dadurch ge  kennzeichnet,     dass@    man die     Diazoverbindung     von     2-Amino-4,6-dimethyl-5-chlor-2',4'-di-          chlor-1,1'-diphenyläthe.r    in alkalischem Me  dium mit     1-(2',5'-Diehlor-benzoylamino)-8-          oxynaphthalin-4,6-disulfonsäure    kuppelt.    Der so erhaltene     Monoazofarbstoff    ist ein  rotes Pulver und färbt Wolle aus saurem  oder neutralem Bade in besonders lebhaften  roten Farbtönen von sehr guten Echtheits  eigenschaften.  



       Beispiel:     30,6 Teile     2-Amino-4,6-dimethyl-5-chlor-          2',4'    -     ,dichlor-    1,1' -     diphenyläther    von der  Formel  
EMI0001.0032     
    werden in     bekannter    Weise     diazotiert    und  die     Diazoverbindung    wird in Gegenwart  eines Überschusses von     Natriumcarbonat    mit  50 Teilen     1-(2',5'-Dichlorbenzoylamino)-8-          ogynaphthalin-4,6-disulfonsäure    gekuppelt.  Der erhaltene Farbstoff     wird    abgeschieden  und     getrocknet.  



  Process for the preparation of a water-soluble honoazo dye. It has been found that water-soluble monoazo dyes which are suitable for dyeing wool and silk are obtained when diazo compounds are obtained from o-amino-diphenyl ethers in which at least three.

       Nuclear hydrogen atoms through chlorine atoms and respectively. or alkyl or haloalkyl radicals are substituted, are coupled with 1-acylamino - 8-oxynaphthalene-disulfonic acids, the dyes thus obtained give red colorations to wool and silk from acidic or neutral baths, which are characterized by pure and bright shades, Bowie distinguished by their excellent authenticity properties.



  The present patent now relates to a process for the preparation of a water-soluble monoazo dye., Characterized in that @ the diazo compound of 2-amino-4,6-dimethyl-5-chloro-2 ', 4'-dichloro 1,1'-diphenyläthe.r in an alkaline medium with 1- (2 ', 5'-Diehlor-benzoylamino) -8-oxynaphthalene-4,6-disulfonic acid couples. The monoazo dye thus obtained is a red powder and dyes wool from an acidic or neutral bath in particularly vivid red shades with very good fastness properties.



       Example: 30.6 parts of 2-amino-4,6-dimethyl-5-chloro-2 ', 4' -, dichloro-1,1 '- diphenyl ether of the formula
EMI0001.0032
    are diazotized in a known manner and the diazo compound is coupled in the presence of an excess of sodium carbonate with 50 parts of 1- (2 ', 5'-dichlorobenzoylamino) -8-ogynaphthalene-4,6-disulfonic acid. The dye obtained is deposited and dried.

Claims (1)

EMI0002.0001 ?'ATENTANSPRUCH: <tb> Verfahren <SEP> zur <SEP> Herstellung <SEP> eines. <SEP> ivassea- lösliehen <SEP> '.4lonoazofarbstoffes, <SEP> dadurch <SEP> ge kennzeichnet, <SEP> dass <SEP> man <SEP> de <SEP> Diazoverbindun <tb> von <SEP> 2-Amino-4,6-dimethyl-5-chilor-2',4'-di ehlor-1,1'-diphenyläther <SEP> in <SEP> allkali3cllenl <SEP> Me dium <SEP> mit <SEP> 1-(2',5'-Dichlorbenzoylamino)-8 oxynaphthalin-4,6--disulfonsä.ure <SEP> kuppelt. EMI0002.0001 ? 'Right to claim: <tb> Method <SEP> for <SEP> production <SEP> of a. <SEP> ivassea- soluble <SEP> '.4lonoazo dye, <SEP> characterized by <SEP>, <SEP> that <SEP> one <SEP> de <SEP> diazo connection <tb> of <SEP> 2-amino-4,6-dimethyl-5-chloro-2 ', 4'-dichloro-1,1'-diphenyl ether <SEP> in <SEP> allkali3cllenl <SEP> medium < SEP> with <SEP> 1- (2 ', 5'-dichlorobenzoylamino) -8 oxynaphthalene-4,6-disulfonic acid <SEP> couples. Der so erhaltene Monoazofarbstoff ist ein rotes Pulver und färbt 'olle aus saureal oder neutralem Bade in besonders lebhaften roten Farbtönen von sehr tuten Echtheits ei genschaT ten. The monoazo dye obtained in this way is a red powder and colors oil from acidic or neutral bath in particularly vivid red shades with very good fastness properties.
CH225367D 1942-01-24 1942-01-24 Process for the preparation of a water-soluble monoazo dye. CH225367A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH225367T 1942-01-24

Publications (1)

Publication Number Publication Date
CH225367A true CH225367A (en) 1943-01-31

Family

ID=4454010

Family Applications (1)

Application Number Title Priority Date Filing Date
CH225367D CH225367A (en) 1942-01-24 1942-01-24 Process for the preparation of a water-soluble monoazo dye.

Country Status (1)

Country Link
CH (1) CH225367A (en)

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