CH145870A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH145870A
CH145870A CH145870DA CH145870A CH 145870 A CH145870 A CH 145870A CH 145870D A CH145870D A CH 145870DA CH 145870 A CH145870 A CH 145870A
Authority
CH
Switzerland
Prior art keywords
new dye
production
dye
parts
acid
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 CH145870A publication Critical patent/CH145870A/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

Description

  

  Verfahren zur Herstellung eines neuen Farbstoffes.    Es wurde gefunden, dass man Einen neuen  wertvollen Farbstoff erhält, wenn man 2     Mol          Dehydrothio-p-toluidinmonosulfosäure    mit     ei-          nein        112o1        4.4'-Dirritrostilben-2.        2'-disulfosäure     unter Druck kondensiert und das erhaltene  Kondensationsprodukt mit einem Oxydations  mittel behandelt.  



  Der neue     Farbstoff    stellt getrocknet ein  oranges Pulver dar, welches sich in Wasser  und verdünnten     Alkalien    mit gelber, in konzen  trierter Schwefelsäure mit     rotstichig    violetter  Farbe löst und Baumolle in sehr licht- und       alkaliechten    gelben Tönen anfärbt.  



  <I>Beispiel:</I>  Man beschickt einen     Rührautoklaven    mit  einem Gemisch von 64 Teilen     Dehydrothio-          p-toluidinmonosulfosäure,    43 Teilen p . p'  dinotrostilben-o.o'-disulfosaurem Natrium,  1000 Teilen Wasser und 156 Teilen Natron  lauge von<B>36'</B>     Be.    Man erwärmt auf<B>1150</B>  und kondensiert 6 Stunden bei dieser Tem  peratur. Nach dem Erkalten wird der Farb  stoff vollends     ausgesalzen,        abgenutscht    und  gepresst.

   Der     Presskuchen    wird mit 2000    Teilen Wasser von 50   gut aufgerührt und  in Gegenwart von 25 Teilen Natronlauge  von<B>360</B>     B@    mit 280 Teilen einer     Natrium-          hypochloritlösung,        enthaltend        13%        aktives     Chlor, zirka 2 Stunden bei<B>60-700</B> behan  delt. Man lässt erkalten, salzt vollends aus  und scheidet den Farbstoff wie üblich ab.



  Process for the production of a new dye. It has been found that a new valuable dye is obtained if 2 moles of dehydrothio-p-toluidine monosulfonic acid are mixed with a 112o1 4,4'-dirritrostilbene-2. 2'-disulfonic acid is condensed under pressure and the condensation product obtained is treated with an oxidizing agent.



  The new dye is an orange powder when dried, which dissolves in water and dilute alkalis with yellow, in concentrated sulfuric acid with a reddish violet color and stains Baumolle in very light and alkali-like yellow tones.



  <I> Example: </I> A stirred autoclave is charged with a mixture of 64 parts of dehydrothio-p-toluidine monosulfonic acid and 43 parts of p. p 'dinotrostilben-o.o'-disulfonic acid sodium, 1000 parts of water and 156 parts of sodium hydroxide solution of <B> 36' </B> Be. The mixture is heated to <B> 1150 </B> and condensed for 6 hours at this temperature. After cooling, the dye is completely salted out, sucked off and pressed.

   The presscake is stirred well with 2000 parts of 50 water and in the presence of 25 parts of sodium hydroxide solution of 360 B @ with 280 parts of a sodium hypochlorite solution containing 13% active chlorine, for about 2 hours at <B> 60-700 </B> treated. 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, dass man 2 Mol Dehydrothio-p-toluidinmonosulfo- säure mit einem Mol 4.4'Diriitrostilberr-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 dehydrothio-p-toluidine monosulfonic acid are condensed with one mole of 4.4'Diriitrostilberr-2.2'-disulfonic acid under pressure and the resulting condensation product is treated with an oxidizing agent. Der neue Farbstoff stellt getrocknet ein orangesPulverdar, welches sich in Wasser und verdünnten Alkalien mit gelber, in konzen trierter Schwefelsäure mit rotstichig violetter Farbe löst und Baumwolle in sehr licht- und alkaliechten gelben Tönen anfärbt. The new dye is an orange powder when dried, which dissolves in water and dilute alkalis with yellow, in concentrated sulfuric acid with a reddish violet color and dyes cotton in very light and alkali-fast yellow tones.
CH145870D 1929-03-16 1929-03-16 Process for the production of a new dye. CH145870A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH145870T 1929-03-16
CH143025T 1929-03-16

Publications (1)

Publication Number Publication Date
CH145870A true CH145870A (en) 1931-03-15

Family

ID=25714167

Family Applications (1)

Application Number Title Priority Date Filing Date
CH145870D CH145870A (en) 1929-03-16 1929-03-16 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH145870A (en)

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