CH143025A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH143025A
CH143025A CH143025DA CH143025A CH 143025 A CH143025 A CH 143025A CH 143025D A CH143025D A CH 143025DA CH 143025 A CH143025 A CH 143025A
Authority
CH
Switzerland
Prior art keywords
new dye
production
dye
acid
new
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH143025A publication Critical patent/CH143025A/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
    • C09B56/00—Azo dyes containing other chromophoric systems
    • C09B56/04—Stilbene-azo dyes
    • 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
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/08—Preparation of azo dyes from other azo compounds by reduction
    • C09B43/085—Preparation of azo dyes from other azo compounds by reduction by reacting nitro azo dyes with amine or amino azo dye with nitro compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

      Verfahren    zur Herstellung eines neuen     Farbstoffes.       Es wurde gefunden, dass man einen neuen  wertvollen Farbstoff erhält,     wenn        inan    2 Hol.       4-Aminoazobenzol-3'-sulfosäure    mit einem  Hol. 4 .     4'-Dinitrostilbeii-?    .     -2'-disiilfosäurc     unter Druck kondensiert.  



  Der neue Farbstoff stellt getrocknet ein  rotbraunes Pulver dar, welches sich in Was  ser und     verdünnteil        Alkalien    mit     öelboran-          ger.    in konzentrierter Schwefelsäure mit  blauer Farbe löst und Baumwolle in sehr  licht- und     alkaliechten        @gelborangen    Tönen       ;anfärbt..     



  <I>Beispiel:</I>       llan        be#chickt    einen     Rührautoklaven    mit  66 Teilen     -l-Aminoazohenzol-3'-sulfosäure.     hergestellt durch Kuppeln von     diazotierter          Hetanilsäure        lind        Anilin-a)-rnethansulfosäure     und.     Verseifun@-        des    erhaltenen     Azofarbstof-          fes.    1:

  3 Teilen     dinitrostilbendisulfosaurem     Natrium. 1000 Teilen Wasser und 250 Teilen       Natronlaiiae    von 36   BP.     Nan    erwärmt     auf       125 bis 130   und kondensiert sechs Stunden  bei dieser Temperatur. Nach dem Erkalten  wird die Natronlauge mit Säure abgestumpft  und der ausgeschiedene Farbstoff vollends       ausgesalzen    und     abgenutscht.  



      Process for the production of a new dye. It has been found that a new valuable dye is obtained if inan 2 hol. 4-Aminoazobenzene-3'-sulfonic acid with a hol. 4th 4'-Dinitrostilbeii-? . -2'-disilfosäurc condensed under pressure.



  The new dye is a red-brown powder when dried, which is dissolved in water and diluted in alkalis with oil-orange. dissolves in concentrated sulfuric acid with a blue color and cotton in very light- and alkali-fast yellow-orange tones; dyes ..



  <I> Example: </I> Ilan be # chickt a stirred autoclave with 66 parts -l-aminoazohenzene-3'-sulfonic acid. produced by coupling diazotized hetanilic acid and aniline-a) methanesulfonic acid and. Saponification @ - of the obtained azo dye. 1:

  3 parts of sodium dinitrostilbene disulphonate. 1000 parts of water and 250 parts of Natronlaiiae from 36 BP. Nan heats to 125 to 130 and condenses at that temperature for six hours. After cooling, the sodium hydroxide solution is blunted with acid and the precipitated dye is completely salted out and suction filtered.

Claims (1)

PATENTANSPRUCH: erfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dal3 man 2 Hol. 1- Aminoa,zobenzol-3'-sulfosäure mit einem Mol. :1 . -1 '- Dinitrostilben - ? . ?' disulfosäure unter Druck kondensiert. PATENT CLAIM: experienced for the production of a new dye, characterized in that 2 Hol. 1- Aminoa, zobenzene-3'-sulfonic acid with one mole: 1. -1 '- Dinitrostilben -? . ? ' disulfonic acid condensed under pressure. Der neue Farbstoff stellt getrocknet ein rotbraunes Pulver dar. welches sich in Was ser und verdünnten Alkalien mit gelboran- ger. in konzentrierter Schwefelsäure mii blauer Farbe löst und Baumwolle in sehr licht- und alkaliechten aelboranaen Tönen anfärbt. The new dye is a red-brown powder when dried. In water and diluted alkalis, it turns yellow-orange. dissolves in concentrated sulfuric acid with a blue color and dyes cotton in very light and alkali-fast alborana tones.
CH143025D 1929-03-16 1929-03-16 Process for the production of a new dye. CH143025A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH143025T 1929-03-16

Publications (1)

Publication Number Publication Date
CH143025A true CH143025A (en) 1930-10-31

Family

ID=4399682

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143025D CH143025A (en) 1929-03-16 1929-03-16 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH143025A (en)

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