CH202432A - 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
CH202432A
CH202432A CH202432DA CH202432A CH 202432 A CH202432 A CH 202432A CH 202432D A CH202432D A CH 202432DA CH 202432 A CH202432 A CH 202432A
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 CH202432A publication Critical patent/CH202432A/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.     
EMI0001.0002     
  
    Gegenstand <SEP> des <SEP> vorliegenden <SEP> Zusatzpaten  tes <SEP> ist <SEP> ein <SEP> Verfahren <SEP> zur <SEP> Herstellung <SEP> eines
<tb>  wasserlösliichen <SEP> Monoazofarbstoffes, <SEP> welches
<tb>  dadurch <SEP> gekennzeichnet <SEP> ist, <SEP> dass <SEP> man <SEP> diazo  eierte <SEP> 3-Aminobenzylsulfonsäure <SEP> mit <SEP> 2-NIe  thyJamino-8-naphthol-,6-sulfonsäure <SEP> in <SEP> al@kali  echem <SEP> Medium <SEP> vereinigt. <SEP> ,
<tb>  <I>Beispiel:

  </I>
<tb>  18,7 <SEP> Gewichtsteile <SEP> ,3-Aminobenzylsulfon  eäure <SEP> wenden <SEP> in <SEP> 2,00 <SEP> Volumteilen <SEP> Wasser.
<tb>  mit <SEP> 5,5 <SEP> ,Gewichtsteilen <SEP> calciniertem <SEP> Natrium  carbonat <SEP> ,gelöst. <SEP> Diese <SEP> Lösung <SEP> wird <SEP> in <SEP> 25
<tb>  Volumteile <SEP> iSalzsänre <SEP> von <SEP> 20 <SEP>   <SEP> B6 <SEP> gegossen
<tb>  und <SEP> in <SEP> Gegenwart <SEP> von <SEP> Eis <SEP> mit <SEP> 6,9 <SEP> (Gewichts  teilen <SEP> Natriumnitrit,dianotiert. <SEP> Die <SEP> erhaltene
<tb>  Diazolflsung <SEP> wird <SEP> bei <SEP> 0 <SEP>   <SEP> C <SEP> mit <SEP> einer <SEP> Lösung
<tb>  von <SEP> 29 <SEP> Gewichtsteilen <SEP> '2-Methylaanino-8-naph  tUol-6-sulfonsäure <SEP> (Mol. <SEP> Gew. <SEP> 2:

  75) <SEP> in <SEP> CTe  genwart <SEP> von <SEP> überschüssiger <SEP> Natriumcarrbonat-            lösung        vereinigt.    Nach     beendeter        Kupplung     wird der Farbstoff isoliert und     getrocknet.     Er     bildet    ein braunes Pulver, das     sich        in     Wasser mit brauner Farbe löst und     Leder    in  braunen Tönen     gut        idurchfärbt.  



  Process for the preparation of a water-soluble nonoazo dye.
EMI0001.0002
  
    Subject <SEP> of the <SEP> present <SEP> additional patent <SEP> is <SEP> a <SEP> process <SEP> for <SEP> production <SEP> of a
<tb> water-soluble <SEP> monoazo dye, <SEP> which
<tb> characterized by <SEP> <SEP>, <SEP> that <SEP> one <SEP> diazo eierte <SEP> 3-aminobenzylsulfonic acid <SEP> with <SEP> 2-NIe thyJamino-8-naphthol-, 6 -sulfonic acid <SEP> combined in <SEP> al @ kali echem <SEP> medium <SEP>. <SEP>,
<tb> <I> Example:

  </I>
<tb> 18.7 <SEP> parts by weight <SEP>, 3-aminobenzylsulfonic acid <SEP> convert <SEP> into <SEP> 2.00 <SEP> parts by volume <SEP> water.
<tb> with <SEP> 5.5 <SEP>, parts by weight <SEP> calcined <SEP> sodium carbonate <SEP>, dissolved. <SEP> This <SEP> solution <SEP> becomes <SEP> in <SEP> 25
<tb> Volume parts <SEP> iSalzsänre <SEP> from <SEP> 20 <SEP> <SEP> B6 <SEP> poured
<tb> and <SEP> in <SEP> presence <SEP> of <SEP> ice <SEP> with <SEP> 6.9 <SEP> (divide by weight <SEP> sodium nitrite, dianotized. <SEP> The <SEP> received
<tb> Diazole solution <SEP> becomes <SEP> with <SEP> 0 <SEP> <SEP> C <SEP> with <SEP> a <SEP> solution
<tb> of <SEP> 29 <SEP> parts by weight <SEP> '2-methylaanino-8-naphtuene-6-sulfonic acid <SEP> (mol. <SEP> wt. <SEP> 2:

  75) <SEP> combined in <SEP> CTe present <SEP> of <SEP> excess <SEP> sodium carbonate solution. After the coupling has ended, the dye is isolated and dried. It forms a brown powder which dissolves in water with a brown color and dyes leather in brown tones well.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines wasser löslichen Monoazofarbstoffm, dadurch ge kennzeichnet, dass man diazotierte 13-Amino- benzylsulionsäure mit 2-Methylamino-,8-uaph- thol-6-sulfonssäure in alkalischem Medium vereinigt. Der so erhaltene Farbstoff bildet ein braunes Pulver, Claim: Process for the production of a water-soluble monoazo dye, characterized in that diazotized 13-amino-benzylsulionic acid is combined with 2-methylamino-, 8-uaphthol-6-sulphonic acid in an alkaline medium. The dye thus obtained forms a brown powder, das sich in Wasser mit brau ner Farbe löst und Leder in braunen Tönen gut durchfärbt. which dissolves in water with a brown color and dyes leather in brown tones well.
CH202432D 1936-04-11 1937-04-05 Process for the preparation of a water-soluble monoazo dye. CH202432A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202432X 1936-04-11
CH199187T 1938-08-15

Publications (1)

Publication Number Publication Date
CH202432A true CH202432A (en) 1939-01-15

Family

ID=25723223

Family Applications (1)

Application Number Title Priority Date Filing Date
CH202432D CH202432A (en) 1936-04-11 1937-04-05 Process for the preparation of a water-soluble monoazo dye.

Country Status (1)

Country Link
CH (1) CH202432A (en)

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