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CH145877A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH145877A
CH145877A CH145877DA CH145877A CH 145877 A CH145877 A CH 145877A CH 145877D A CH145877D A CH 145877DA CH 145877 A CH145877 A CH 145877A
Authority
CH
Switzerland
Prior art keywords
dye
new dye
acid
mole
orange
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 CH145877A publication Critical patent/CH145877A/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

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 143025.         Verfahren        zur    Herstellung eines neuen Farbstoffes.    Es wurde gefunden, dass man einen  neuen wertvollen Farbstoff erhält, wenn man  2     Mol    des Farbstoffes aus     diazotierter        Sul-          fa.nilsäure    und     a-Naphthylamin    mit einem       Mol    4.

   4'-     Dinitrostilben    -     2!.    2'-     disulfosäure     unter Druck kondensiert und das erhaltene       Ii        ondensationsprodukt    mit einem Oxyda  tionsmittel behandelt.  



  Der neue Farbstoff stellt getrocknet ein  dunkelbraunes Pulver dar, welches sich in  Wasser und verdünnten     Alkalien    mit  oranger, in konzentrierter Schwefelsäure  mit stahlblauer Farbe löst und Baumwolle  in sehr licht- und     alkaliechten    rotorangen  Tönen anfärbt.

      <I>Beispiel:</I>  Man beschickt einen     Rührautoklaven    mit  75 Teilen des     Azofarbstoffes    aus     diazotier-          ter        Sulfanilsäure    und     a-Naphthylamin,    43  Teilen     dinitrostilbendisulfosaurem    Natrium,  <B>1000</B> Teilen Wasser und 100 Teilen Natron-    lauge von 36      Be.    Man erwärmt auf 120" und  kondensiert 6 Stunden bei dieser Temperatur.

    Nach dem Erkalten wird die     NatronlauLre     mit     Säure    abgestumpft und der ausgeschie  dene Farbstoff vollends aasgesalzen,     abge-          nutscht    und gepresst. Der     Presskuchen    wird  mit 600 Teilen Wasser von 50  angerührt     un,1     in Gegenwart von<B>215</B> Teilen Natronlauge von       36         B6    mit 300 Teilen     Natriumhypochlorit-          lösung    enthaltend 13 % aktives Chlor zirka  1 Stunde bei 60-70  behandelt. Man     lässt    er  kalten, salzt vollends aus und scheidet den  Farbstoff wie üblich ab.



      Additional patent to main patent No. 143025. Process for the production of a new dye. It has been found that a new valuable dye is obtained if 2 moles of the dye from diazotized sulpha.nilic acid and a-naphthylamine are added with one mole of 4.

   4'- Dinitrostilben - 2 !. 2'-disulfonic acid is condensed under pressure and the ion obtained is treated with an oxidizing agent.



  When dried, the new dye is a dark brown powder that dissolves in water and dilute alkalis with orange, in concentrated sulfuric acid with a steel blue color and dyes cotton in very light and alkali-fast red-orange tones.

      <I> Example: </I> A stirred autoclave is charged with 75 parts of the azo dye composed of diazotized sulfanilic acid and α-naphthylamine, 43 parts of sodium dinitrostilbene disulfonic acid, 1000 parts of water and 100 parts of sodium hydroxide solution 36 Be. The mixture is heated to 120 "and condensed for 6 hours at this temperature.

    After cooling, the caustic soda is blunted with acid and the excreted color is completely carrion-salted, suction filtered and pressed. The presscake is mixed with 600 parts of 50 water and treated in the presence of 215 parts of 36 B6 sodium hydroxide solution with 300 parts of sodium hypochlorite solution containing 13% active chlorine for about 1 hour at 60-70. It is left cold, completely salted out and the dye is separated off as usual.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man Mol des Farbstoffes aus diazotierter Sul- fanilsäure und a-Naphthylamin mit einem Mol 4 . 4'- Dinitrostilben - \? . ?'- disulfosäure unter Druck kondensiert und das erhaltene Kondensationsprodukt mit einem Oxyda tionsmittel behandelt. PATENT CLAIM: Process for the preparation of a new dye, characterized in that one mole of the dye is obtained from diazotized sulphanilic acid and a-naphthylamine with one mole of 4. 4'- Dinitrostilben - \? . ? '- Disulfonic acid condensed under pressure and the condensation product obtained is treated with an oxidizing agent. Der neue Farbstoff stellt getrocknet ein dunkelbraunes Pulver dar, welches sich in 'Wasser und verdünnten Alkalien mit oranger, in konzentrierter Schwefelsäure mit stahlblauer Farbe löst und Baumwolle in sehr licht- und alkaliechten rotorangen Tönen anfärbt. When dried, the new dye is a dark brown powder which dissolves in water and dilute alkalis with orange, in concentrated sulfuric acid with steel blue color and dyes cotton in very light and alkali-fast red-orange tones.
CH145877D 1929-03-16 1929-03-16 Process for the production of a new dye. CH145877A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH145877T 1929-03-16
CH143025T 1929-03-16

Publications (1)

Publication Number Publication Date
CH145877A true CH145877A (en) 1931-03-15

Family

ID=25714174

Family Applications (1)

Application Number Title Priority Date Filing Date
CH145877D CH145877A (en) 1929-03-16 1929-03-16 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH145877A (en)

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