CH144203A - Process for the preparation of a compound which pulls on the cotton and can be diazotized on the fiber. - Google Patents

Process for the preparation of a compound which pulls on the cotton and can be diazotized on the fiber.

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Publication number
CH144203A
CH144203A CH144203DA CH144203A CH 144203 A CH144203 A CH 144203A CH 144203D A CH144203D A CH 144203DA CH 144203 A CH144203 A CH 144203A
Authority
CH
Switzerland
Prior art keywords
fiber
cotton
compound
pulls
diazotized
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH144203A publication Critical patent/CH144203A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung einer auf die     Baumwolle    ziehenden und auf der Faser       diazotierbaren        Verbindung.       Das den Gegenstand vorliegender Er  findung bildende Zierfahren ist dadurch ge  kennzeichnet, dass man aus zwei     Holekillen       4.

       4-'-        Di    - (4" -     nitrobenzovlamino)    -     stilben-          2.        ?'-        disulfosäure     
EMI0001.0012     
    durch vorsichtige Reduktion je einer Nitro  gruppe, wobei Bindung     zwischen    den Stick  stoffatomen stattfindet, und eine sich an  schliessende Reduktion der beiden     übrig-          bleibenden    Nitrogruppen zu     Aminogruppen     eine schwach gelb     befärbte        Verbindung    her  stellt,

   die als     Natriumsalz    in Wasser leicht  löslich ist und aus der wässerigen Lösung  mit     blassgelber    Farbe auf Baumwolle zieht.  Durch     Diazotieren    auf der Faser und Kup  peln mit 1 -     Phenyl    - 3 -     methyl    - 5-     pyrazolon       erhält man ein kräftiges, lebhaftes,     grün-          stichiges    Gelb von sehr guter Wasch- und  Lichtechtheit. Die beiden Reduktionsreak  tionen kann man in einem     Arbeitsgange     ausführen.

      <I>Beispiel:</I>  <B>71,2</B> Teile 4.     4'-di-(4"-nitrobenzoylamino)-          stilben-2.2'-disulfosaures    Natrium werden  in     7.500    Teilen Wasser heiss gelöst. Man setzt  bei 20   eine Lösung von 8 Teilen Natrium-           hydroxy    d und     ?0    Teilen wasserfreiem     NTa-          triumsulfid    hinzu und lässt     ?(i    Stunden rüh  ren. Das     ausgesalzene    Reaktionsprodukt kann  aus Wasser umgelöst werden.  



  Als Reduktionsmittel kann man unter an  derem auch     C-rlukose.        arsenige    Säure oder       Zinkstaub    verwenden.



  Process for the preparation of a compound which pulls on the cotton and can be diazotized on the fiber. The ornamental method forming the subject of the present invention is characterized in that two hollow grooves 4.

       4 -'- di - (4 "- nitrobenzovlamino) - stilbene- 2.? '- disulfonic acid
EMI0001.0012
    by carefully reducing one nitro group each, whereby bonding takes place between the nitrogen atoms, and a subsequent reduction of the two remaining nitro groups to amino groups creates a pale yellow colored compound,

   which, as the sodium salt, is easily soluble in water and draws from the aqueous solution with a pale yellow color on cotton. By diazotizing the fiber and coupling with 1-phenyl-3-methyl-5-pyrazolone, a strong, vivid, green-tinged yellow of very good wash and lightfastness is obtained. The two reduction reactions can be carried out in one operation.

      <I> Example: </I> <B> 71.2 </B> parts of 4. 4'-di- (4 "-nitrobenzoylamino) - stilbene-2.2'-disulphonic acid sodium are dissolved in 7,500 parts of hot water add a solution of 8 parts of sodium hydroxide and? 0 parts of anhydrous natrium sulfide at 20 and let? (stir for 1 hours. The salted out reaction product can be redissolved from water.



  C-glucose can also be used as a reducing agent. Use arsenic acid or zinc dust.

Claims (1)

PATENTANSPRUCH: @'erfahren zur Darstellung einer auf die Baumwolle ziehenden und auf der Faser di- azotierbareii Verbindung, dadurch gekenn zeichnet, dass man aus zwei Molekülen -1 .<B>-l'-</B> Di - i.t" - nitrol)enzovlaminö) - stilben- . ?'- disulfosäure EMI0002.0020 durch vorsichtige Reduktion je einer Nitro- gruppe, wobei Bindung zwischen den Stick stoffatomen stattfindet, PATENT CLAIM: Learn about the representation of a compound that pulls on the cotton and can be diacotized on the fiber, characterized by the fact that one consists of two molecules -1. <B> -l'- </B> Di - it "- nitrol ) enzovlaminö) - stilbene.? '- disulfonic acid EMI0002.0020 by carefully reducing one nitro group each, whereby bonding takes place between the nitrogen atoms, und eine sich an schliessende Reduktion der beiden übrig bleibenden Nitrogruppen zu Aminog-ruppen eine sehwach gelb gefärbte Verbindung lic;r- stellt, die als Natriumsalz in Wasser leicht löslich ist und aus der wässerigen Lösung mit blassgelber Farbe auf Baumwolle zieht. Durch Diazotieren auf der Faser und Kup peln mit 1 - Phenyl - 3 - methy 1- 5- pyrazolon erhält man ein kräftiges. lebhaftes, grün stickiges Gelb. and a subsequent reduction of the two remaining nitro groups to amino groups produces a weakly yellow colored compound which, as the sodium salt, is easily soluble in water and from the aqueous solution draws a pale yellow color onto cotton. By diazotizing on the fiber and Kup peln with 1 - phenyl - 3 - methy 1 - 5 pyrazolone you get a strong. lively, green, stuffy yellow. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die beiden R.eduk- tionsrealdionen in einem Arbeitsgange aus führt. SUBCLAIM: Process according to claim, characterized in that the two reduction reactions are carried out in one operation.
CH144203D 1928-01-18 1929-01-14 Process for the preparation of a compound which pulls on the cotton and can be diazotized on the fiber. CH144203A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE144203X 1928-01-18
CH140099T 1929-01-14

Publications (1)

Publication Number Publication Date
CH144203A true CH144203A (en) 1930-12-15

Family

ID=25713468

Family Applications (1)

Application Number Title Priority Date Filing Date
CH144203D CH144203A (en) 1928-01-18 1929-01-14 Process for the preparation of a compound which pulls on the cotton and can be diazotized on the fiber.

Country Status (1)

Country Link
CH (1) CH144203A (en)

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