CH145872A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH145872A
CH145872A CH145872DA CH145872A CH 145872 A CH145872 A CH 145872A CH 145872D A CH145872D A CH 145872DA CH 145872 A CH145872 A CH 145872A
Authority
CH
Switzerland
Prior art keywords
new dye
red
orange
dye
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 CH145872A publication Critical patent/CH145872A/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          4-Amino-2-methyl-5-methoxyazobenzol-3'-sul-          fosäure    mit einem Hol     4.4'-Dinitroetilben-          2.2'-disulfosäure    unter Druck kondensiert  und das erhaltene Kondensationsprodukt mit  einem Oxydationsmittel behandelt.  



  Der neue     Farbstoff    stellt getrocknet ein  braunrotes Pulver dar, welches sich in Was  ser und verdünnten Alkalien mit orangeroter,  in     konzentrierter    Schwefelsäure mit stahl  blauer Farbe löst und Baumwolle in sehr  licht- und     alkaliechten    orangeroten Tönen  anfärbt.

      <I>Beispiel:</I>    Man beschickt einen     Rührautoklaven    mit  1000 Teilen Wasser, 70 Teilen     4-Amino-2-          methyl-5-methoxyazob.enzol-3'-sulfosäure,    her  gestellt durch Kuppeln von     diazotierter        Me-          tanilsäure    mit     m-Amino-p-kresoläther,    43 Tei  len     p.p'-dinitrostilben-o.o'-disulfosaurem    Na-         trium    und<B>195</B> Teilen Natronlauge von 36         Be.    Man erwärmt das Gemisch auf 127   und  kondensiert 6     Stunden    bei dieser Temperatur.

    Man lässt erkalten,     salzt'den    ausgeschiedenen       Farbstoff    vollends aus und rutscht ab. Der       Presskuchen    'wird mit 600 Teilen Wasser     an-          geteigt.    Zu der Mischung fügt man 25 Teile  Natronlauge vor 36       B6    und 300 Teile einer       Hypochloritlösung        von        13        %        Gehalt        an        akti-          vem    Chlor.

   Man erwärmt das Gemisch 2 Stun  den auf 70-80 0, lässt alsdann erkalten, salzt  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 4-amino-2-methyl-5-methoxyazobenzene-3'-sulphonic acid are condensed under pressure with a 4.4'-dinitroetilbene-2.2'-disulphonic acid the condensation product obtained is treated with an oxidizing agent.



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

      <I> Example: </I> A stirred autoclave is charged with 1000 parts of water, 70 parts of 4-amino-2-methyl-5-methoxyazobenzene-3'-sulfonic acid, produced by coupling diazotized metanilic acid with m -Amino-p-cresol ether, 43 parts of p.p'-dinitrostilben-o.o'-disulfosaurem sodium and <B> 195 </B> parts of sodium hydroxide solution of 36 Be. The mixture is heated to 127 and condensed for 6 hours at this temperature.

    It is allowed to cool, completely salted out the precipitated dye and slipped off. The press cake is made into a paste with 600 parts of water. 25 parts of sodium hydroxide solution in front of 36 B6 and 300 parts of a hypochlorite solution with a 13% content of active chlorine are added to the mixture.

   The mixture is heated to 70-80 ° for 2 hours, then allowed to cool, salted out and the dye is separated off as usual

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 2 Mol 4-Amino-2-methyl-5-methoxyazobenzol- 3'-sulfosäure mit einem Mol 4.4'-Dinitrostil- ben-2.2'-disulfosäure unter Druck kondensiert und das erhaltene Kondensationsprodukt mit einem Oxydationsmittel behandelt. Claim: Process for the preparation of a new dye, characterized in that 2 moles of 4-amino-2-methyl-5-methoxyazobenzene-3'-sulfonic acid are condensed with one mole of 4,4'-dinitrostilbene-2.2'-disulfonic acid under pressure and the condensation product obtained is treated with an oxidizing agent. Der neue Farbstoff stellt getrocknet ein braunrotes Pulver dar, welches sich in Was- ser und verdünnten Alkalien mit orangeroter, in konzentrierter Schwefelsäure mit stahl blauer Farbe löst und Baumwolle in sehr licht- und alkaliechten orangeroten Tönen an färbt. The new dye is a brown-red powder when dried, which dissolves in water and dilute alkalis with orange-red, in concentrated sulfuric acid with a steel-blue color and stains cotton in very light and alkali-fast orange-red tones.
CH145872D 1929-03-16 1929-03-16 Process for the production of a new dye. CH145872A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH145872T 1929-03-16
CH143025T 1929-03-16

Publications (1)

Publication Number Publication Date
CH145872A true CH145872A (en) 1931-03-15

Family

ID=25714169

Family Applications (1)

Application Number Title Priority Date Filing Date
CH145872D CH145872A (en) 1929-03-16 1929-03-16 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH145872A (en)

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