CH203874A - 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
CH203874A
CH203874A CH203874DA CH203874A CH 203874 A CH203874 A CH 203874A CH 203874D A CH203874D A CH 203874DA CH 203874 A CH203874 A CH 203874A
Authority
CH
Switzerland
Prior art keywords
sep
water
preparation
monoazo dye
soluble monoazo
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 CH203874A publication Critical patent/CH203874A/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        Nonoazofarbstoffes.            Gegenstand    des     vorliegenden        Zusatz-          patentes    ist ein Verfahren zur Herstellung       eines        wasserlösliehen        Monoazofarbstoffes,          welches        dadurch        ,gekennzeichnet        ist,        dass    man       monodiazotiertes        Chlor-1,4-,

  daminobenzol    in  alkalischem Medium mit     2-Amino-8-oxy-          naphthalin-3;6-,düulfons#äuTe        kuppelt.       <I>Beispiel:</I>  
EMI0001.0020     
  
    14,25 <SEP> Gewiohtsteile <SEP> Chlor-1,4-,diamino  benzol <SEP> werden <SEP> in <SEP> 3,00 <SEP> Gewichtsteilen <SEP> 5 <SEP> %iger
<tb>  Schwefelsäure <SEP> gelöst <SEP> und <SEP> langsam <SEP> bei <SEP> 10
<tb>  bis <SEP> 15 <SEP>   <SEP> C <SEP> mit <SEP> -6;

  9 <SEP> Gewichtsteilen <SEP> Natrium  nitrit <SEP> diazotiert. <SEP> Die <SEP> filtrierte <SEP> Diazolösung
<tb>  läuft <SEP> langsam <SEP> zu <SEP> einer <SEP> Lösung <SEP> von <SEP> 27,1 <SEP> ,Ge  wichtstroilen <SEP> 2-Amino-8-oxynaphthalin-3,@6-di  sulfonsäure <SEP> in <SEP> 400 <SEP> Volumteilen <SEP> '2a-Natrium  carbonatlösung. <SEP> Der <SEP> Farbstoff <SEP> wird <SEP> durch            Aussalzen        abgesehieden,        abgesaugt        und    ge  trocknet.  



  Er stellt     eindunkelbraunes        Pulver    dar,       ,das    Leder in     blaustichig        braunen    Tönen  sehr gut einfärbt.



  Process for the preparation of a water-soluble nonoazo dye. The subject of the present additional patent is a process for the production of a water-soluble monoazo dye, which is characterized in that monodiazotized chlorine-1,4-,

  Daminobenzene in an alkaline medium with 2-amino-8-oxynaphthalene-3; 6-, düulfons # outside couples. <I> Example: </I>
EMI0001.0020
  
    14.25 parts by weight <SEP> chlorine-1,4-, diamino benzene <SEP> are <SEP> in <SEP> 3.00 <SEP> parts by weight <SEP> 5 <SEP>%
<tb> sulfuric acid <SEP> dissolved <SEP> and <SEP> slowly <SEP> at <SEP> 10
<tb> to <SEP> 15 <SEP> <SEP> C <SEP> with <SEP> -6;

  9 <SEP> parts by weight <SEP> sodium nitrite <SEP> diazotized. <SEP> The <SEP> filtered <SEP> diazo solution
<tb> runs <SEP> slowly <SEP> to <SEP> a <SEP> solution <SEP> of <SEP> 27.1 <SEP>, weight stroilen <SEP> 2-amino-8-oxynaphthalene-3, @ 6-disulfonic acid <SEP> in <SEP> 400 <SEP> parts by volume <SEP> '2a-sodium carbonate solution. <SEP> The <SEP> dye <SEP> is <SEP> separated by salting out, sucked off and dried.



  It is a dark brown powder, which colors leather very well in bluish brown tones.

Claims (1)

PATENTANSPRUCH: EMI0001.0031 Verfahren <SEP> zur <SEP> Herstellung <SEP> eines <SEP> wasser löslächen <SEP> Monoazofarbstoffes, <SEP> dadurch <SEP> ge kennzeichnet, <SEP> @dass <SEP> man <SEP> monodiazotiertes <tb> Chllor-1,4-@diaminobenzol <SEP> in <SEP> alkalischem <SEP> Me dium <SEP> mit <SEP> 2-Amino-8-oxynap@hthalin-3;6-di-sul fonsäu-re <SEP> kuppelt. <tb> Der <SEP> so <SEP> erhaltene <SEP> Farbstoff <SEP> stellt <SEP> ein <tb> dunkelbraunes <SEP> Pulver <SEP> dar, <SEP> das <SEP> Leder <SEP> in <SEP> blau stichig <SEP> braunen <SEP> Tönen <SEP> sehr <SEP> gut <SEP> .einfärbt. PATENT CLAIM: EMI0001.0031 Process <SEP> for <SEP> production <SEP> of a <SEP> water-soluble <SEP> monoazo dye, <SEP> characterized by <SEP>, <SEP> @that <SEP> is <SEP> monodiazotized <tb> chloro-1,4- @ diaminobenzene <SEP> in <SEP> alkaline <SEP> medium <SEP> with <SEP> 2-amino-8-oxynap @ hthalin-3; 6-di-sulphonic acid re <SEP> couples. <tb> The <SEP> so <SEP> obtained <SEP> dye <SEP> sets <SEP> <tb> dark brown <SEP> powder <SEP>, <SEP> the <SEP> leather <SEP> in <SEP> blue tinged <SEP> brown <SEP> tones <SEP> very <SEP> good <SEP>. colors.
CH203874D 1936-09-05 1937-08-26 Process for the preparation of a water-soluble monoazo dye. CH203874A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE203874X 1936-09-05
CH200676T 1938-10-31

Publications (1)

Publication Number Publication Date
CH203874A true CH203874A (en) 1939-03-31

Family

ID=25723573

Family Applications (1)

Application Number Title Priority Date Filing Date
CH203874D CH203874A (en) 1936-09-05 1937-08-26 Process for the preparation of a water-soluble monoazo dye.

Country Status (1)

Country Link
CH (1) CH203874A (en)

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