CH144201A - 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
CH144201A
CH144201A CH144201DA CH144201A CH 144201 A CH144201 A CH 144201A CH 144201D A CH144201D A CH 144201DA CH 144201 A CH144201 A CH 144201A
Authority
CH
Switzerland
Prior art keywords
cotton
fiber
compound
pulls
preparation
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 CH144201A publication Critical patent/CH144201A/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 Verfahren ist dadurch ge  kennzeichnet, dass man aus zwei Molekülen  
EMI0001.0003     
    durch vorsichtige Reduktion je einer     Nitro-          gruppe,    wobei Bindung zwischen den     Stiek-          stoffatomen    stattfindet, und eine sich an  schliessende Reduktion der beiden übrig  bleibenden     Nitrogruppen    zu     Aminogruppen     eine schwach gelb gefärbte 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    -<B>3</B> -     methyl    - 5-     pyrazolon       4.     4'-Di-        (.4"-        nitrobenzoylamino)    -     diphenyl-          .    2'-     disulfosäure       erhält man ein kräftiges, lebhaftes,     gxün-          stichiges    Gelb von sehr guter Wasch- und  Lichtechtheit.

   Die beiden Reduktionsreak  tionen kann man in einem Arbeitsgange  ausführen.  



  <I>Beispiel:</I>  <B>68,6</B> Teile     4.4'-di-(4"-nitrobenzolamino)-          diphenyl-?    .     2'-disulfosaures    Natrium werden  in 1500 Teilen Wasser heiss gelöst. Man setzt  bei 20   eine Lösung von 8 Teilen Natrium-           hydroxyd    und     ?0    Teilen wasserfreiem Na  triumsulfid hinzu und lässt     ?0    Stunden rüh  ren. Das     ausgesaIzene    Reaktionsprodukt kann  aus Wasser umgelöst     werden.     



  Als     Reduktionsmittel    kann man unter an  derem auch Glukose,     arsenige    Säure oder  Zinkstaub verwenden.  
EMI0002.0008     
    durch vorsichtige Reduktion je einer     Nitro-          Crruppe,    wobei Bindung     zwischen    den     Stick-          stoffatomen    stattfindet, und eine sich     an-          schliessende    Reduktion der beiden übrig  bleibenden Nitrogruppen zu     Aminogruppen     eine schwach gelb gefärbte Verbindung her  stellt,

   die als     Natriumsalz    in Wasser leicht  löslich ist und aus der wässerigen Lösung  mit Massgelber Farbe auf Baumwolle zieht.  Durch     Diazotieren    auf der Faser und Kup  peln mit 1-     Phenyl    - 3 -     methyl    - 5-     pyrazolon  



  Process for the preparation of a compound which pulls on the cotton and can be diazotized on the fiber. The method forming the subject of the present invention is characterized in that one consists of two molecules
EMI0001.0003
    by careful reduction of 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 on the fiber and coupling with 1-phenyl- 3-methyl-5-pyrazolone 4. 4'-di- (.4 "- nitrobenzoylamino) - diphenyl-. 2'-disulfonic acid is obtained you get a strong, lively, greenish yellow with very good wash and lightfastness.

   The two reduction reactions can be carried out in one operation.



  <I> Example: </I> <B> 68.6 </B> parts of 4.4'-di- (4 "-nitrobenzolamino) -diphenyl-?. 2'-disulfonic acid sodium are dissolved in 1500 parts of hot water add a solution of 8 parts of sodium hydroxide and? 0 parts of anhydrous sodium sulfide at 20 and stir for? 0 hours. The salted out reaction product can be redissolved from water.



  Glucose, arsenic acid or zinc dust can also be used as reducing agents.
EMI0002.0008
    by careful reduction of 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 is easily soluble as the sodium salt in water and draws from the aqueous solution with a solid yellow color on cotton. By diazotizing on the fiber and coupling with 1-phenyl-3-methyl-5-pyrazolone

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung einer auf die Baumwolle ziehenden und auf der Faser di- azotierbaren Verbindung, dadurch gekenn zeichnet, dass man aus zwei Molekülen 1 . l-'- Di- (.1"- nitrobenzoylamino) - dipheny 1 . ?'- disulfosäure erhält man ein kräftiges, lebhaftes, grün stichiges Gelb. PATENT CLAIM: Process for the preparation of a compound which pulls on the cotton and which can be diacotized on the fiber, characterized in that one consists of two molecules 1. l -'- di- (.1 "- nitrobenzoylamino) - dipheny 1.? '- disulfonic acid produces a strong, lively, greenish yellow. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die beiden Reduk tionsreaktionen in einem Arbeitsgange aus führt. SUBSTANTIAL CLAIM: Process according to claim, characterized in that the two reduction reactions are carried out in one operation.
CH144201D 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. CH144201A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE144201X 1928-01-18
CH140099T 1929-01-14

Publications (1)

Publication Number Publication Date
CH144201A true CH144201A (en) 1930-12-15

Family

ID=25713466

Family Applications (1)

Application Number Title Priority Date Filing Date
CH144201D CH144201A (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) CH144201A (en)

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