CH145875A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH145875A
CH145875A CH145875DA CH145875A CH 145875 A CH145875 A CH 145875A CH 145875D A CH145875D A CH 145875DA CH 145875 A CH145875 A CH 145875A
Authority
CH
Switzerland
Prior art keywords
new dye
dye
orange
disulfonic acid
production
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 CH145875A publication Critical patent/CH145875A/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
    • 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
    • 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

  

  <B>Zusatzpatent</B> zum Hauptpatent     hlr.    143025.    Verfahren zur Herstellung eines neuen Farbstoffes.    Es wurde gefunden, dass mau einen  neuen wertvollen Farbstoff erhält, wenn man  2     Mol    des Farbstoffes aus     diazotierter        2-          Naphthylamin    - 4. 8 -     disulfosäure    und     m-          Amino-p-kresolmethyläther    mit einem     Mol     4 .     4'-Dinitrostilben-2-    .     2'-disulfosäure    unter  Druck kondensiert und das erhaltene Konden  sationsprodukt mit einem Oxydationsmittel  behandelt.  



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



  <I>Beispiel,</I>  Man beschickt einen     Rührautoklaven    mit  90 Teilen des Farbstoffes der Formel:  
EMI0001.0017     
    43 Teilen     dinitrostilbendisulfosaurezn    Na  trium, 1000 Teilen Wasser und 100 Teilen  Natronlauge von     36         B6.    Man erwärmt auf       12i5     und kondensiert 6 Stunden bei dieser  Temperatur. Nach dem Erkalten wird die  Natronlauge mit Säure abgestumpft und der  ausgeschiedene Farbstoff vollends     ausge-          salzen,        abgenutscht    und gepresst.

   Der     Press-          kuchen        wird    mit 600 Teilen Wasser von     50      angerührt und in Gegenwart von 25 Teilen  Natronlauge von     36         B6    mit 300 Teilen     Na-          triumhypochloritlösung    enthaltend 13 % ak  tives Chlor zirka 1 Stunde bei 60-70  behan  delt. Man lässt erkalten, salzt vollends aus  und scheidet den Farbstoff wie üblich ab.



  <B> Additional patent </B> to the main patent hlr. 143025. Process for the preparation of a new dye. It has been found that a new valuable dye is obtained if 2 moles of the dye are obtained from diazotized 2-naphthylamine - 4. 8 - disulfonic acid and m-amino-p-cresol methyl ether with one mole of 4. 4'-dinitrostilbene-2-. 2'-disulfonic acid is condensed under pressure and the resulting condensation product is treated with an oxidizing agent.



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



  <I> Example, </I> A stirred autoclave is charged with 90 parts of the dye of the formula:
EMI0001.0017
    43 parts of sodium dinitrostilbendisulfosaurezn, 1000 parts of water and 100 parts of sodium hydroxide solution of 36 B6. The mixture is heated to 125 and condensed for 6 hours at this temperature. After cooling, the caustic soda is blunted with acid and the precipitated dye is completely salted out, suction filtered and pressed.

   The press cake is mixed with 600 parts of 50% water and treated in the presence of 25 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 allowed to cool, completely salted out and the dye is separated off as usual.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, daB maii Mol des. Farbstoffes aus diazotierter 2- Naphthylamin - 4. 8 - disulfosäure und m- Amino-p-kresolmethyläther mit einem Mol 4.4'-Dinitrostilben-2.2'-disulfosäure unter Druck kondensiert und das erhaltene Konden sationsprodukt mit einem Oxydationsmittel behandelt. PATENT CLAIM: Process for the preparation of a new dye, characterized in that maii moles of the dyestuff from diazotized 2-naphthylamine - 4. 8 - disulfonic acid and m-amino-p-cresol methyl ether with one mole of 4,4'-dinitrostilbene-2,2'-disulfonic acid Pressure condenses and treated the condensation product obtained with an oxidizing agent. Der neue Farbstoff stellt getrocknet ein violettbraunes Pulver dar, welches sich in Wasser und verdünnten Alkalien mit oranger, in konzentrierter Schwefelsäure mit blauer Farbe löst und Baumvolle in sehr licht- und alkaliechten rotorangen Tönen an färbt. When dried, the new dye is a violet-brown powder that dissolves in water and dilute alkalis with orange, in concentrated sulfuric acid with blue, and stains trees in very light and alkali-fast red-orange tones.
CH145875D 1929-03-16 1929-03-16 Process for the production of a new dye. CH145875A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH143025T 1929-03-16
CH145875T 1929-03-16

Publications (1)

Publication Number Publication Date
CH145875A true CH145875A (en) 1931-03-15

Family

ID=25714172

Family Applications (1)

Application Number Title Priority Date Filing Date
CH145875D CH145875A (en) 1929-03-16 1929-03-16 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH145875A (en)

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