CH285349A - Process for the preparation of a derivative of 4,4'-diamino-stilbene-disulfonic acid- (2,2 '). - Google Patents

Process for the preparation of a derivative of 4,4'-diamino-stilbene-disulfonic acid- (2,2 ').

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Publication number
CH285349A
CH285349A CH285349DA CH285349A CH 285349 A CH285349 A CH 285349A CH 285349D A CH285349D A CH 285349DA CH 285349 A CH285349 A CH 285349A
Authority
CH
Switzerland
Prior art keywords
stilbene
disulfonic acid
diamino
preparation
derivative
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Ciba
Original Assignee
Ciba Geigy
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 Ciba Geigy filed Critical Ciba Geigy
Publication of CH285349A publication Critical patent/CH285349A/en

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Description

  

  <B>Verfahren zur Herstellung eines Derivats der</B>     4,4'-Diamino-stilben-disulfonsäure-(2,2').       Es wurde gefunden, dass man zu einem  neuen Derivat der     4,4-Diamino-stilben-disul-          fonsäure-(2,2')    gelangt, wenn man erfindungs  gemäss 1     Mol    des     Dinatriumsalzes    der     4,4'-Bis-          [2,4-dichlor-1,3,5-triazyl-(6)        -amino]    -stilben-di-         sulfonsäure-(2,2')    mit 2     Mol        Monoäthylamin     umsetzt.  



  Die Umsetzung kann zum Beispiel in der  Weise vorgenommen werden, dass man das ge  nannte     Dinatriumsalz    bei 35  C in wässeriger  Lösung mit dem     Monoäthylamin    umsetzt.    Das so erhaltene     Natriumsalz    der Formel  
EMI0001.0015     
    ist. ein hellgelbes, wasserlösliches Pulver. Es  kann zum optischen Bleichen von     Cellulose-          fasern    verwendet werden.

      <I>Beispiel:</I>  Zu einer neutralen wässerigen Lösung von  710 Teilen des     Dinatriumsalzes    der auf be  kannte Weise durch Umsetzung von 2     Mol          Cyanurchlorid    mit 1     Mol        4,4'-Diamino-stilben-          disulfonsäure-(2,2')    hergestellten 4,4'-Bis-[2,4       diehlor-1.;3,5-triazyl-(6)-amino]-stilben-disul-          fonsäure-(2,2)    gibt man bei 10  C 450 Teile       50o/oige    wässerige     Monoäthylaminlösung.    Hier  auf steigert man die Temperatur des Reak  tionsgemisches auf 35  C und rührt 2 bis 3  Stunden bei dieser Temperatur.

   Das entstan  dene     Dinatriumsalz    der 4,4'-Bis-[2-ät.hyl-         amino-4-chlor-1,3,5-triazy1-(6)-amino]-stilben-          disulfonsäure-(2,2')    wird durch Zugeben von       Natriumehlorid    abgeschieden, filtriert, mit Na  triumchloridlösung gewaschen und getrocknet.  Man erhält das neue Produkt als hellgelbes,  wasserlösliches Pulver.



  <B> Process for the preparation of a derivative of 4,4'-diamino-stilbene-disulfonic acid- (2,2 '). It has been found that a new derivative of 4,4-diamino-stilbene-disulphonic acid- (2,2 ') is obtained if, according to the invention, 1 mol of the disodium salt of 4,4'-bis [2, 4-dichloro-1,3,5-triazyl- (6) -amino] -stilbene-disulfonic acid- (2,2 ') is reacted with 2 mol of monoethylamine.



  The reaction can be carried out, for example, in such a way that the disodium salt mentioned is reacted with the monoethylamine at 35 ° C. in an aqueous solution. The sodium salt of the formula thus obtained
EMI0001.0015
    is. a light yellow, water soluble powder. It can be used for the optical bleaching of cellulose fibers.

      <I> Example: </I> To a neutral aqueous solution of 710 parts of the disodium salt in a known manner by reacting 2 mol of cyanuric chloride with 1 mol of 4,4'-diamino-stilbene-disulfonic acid (2.2 ') 4,4'-bis- [2,4 diehlor-1.; 3,5-triazyl- (6) -amino] -stilbene-disulfonic acid- (2,2) are added at 10 ° C. 450 parts 50 ° / oige aqueous monoethylamine solution. Here, the temperature of the reaction mixture is increased to 35 C and stirred for 2 to 3 hours at this temperature.

   The resulting disodium salt of 4,4'-bis- [2-ethyl-amino-4-chloro-1,3,5-triazyl- (6) -amino] -stilbene-disulfonic acid- (2,2 ') is deposited by adding sodium chloride, filtered, washed with sodium chloride solution and dried. The new product is obtained as a pale yellow, water-soluble powder.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen De rivats der 4,4'-Diamino-stilben-disulfonsäure- (2,2'), dadurch gekennzeichnet, dass man 1 Mol des Dinatriumsalzes der 4,4'-Bis-[2,4-dichlor- 1,3,5 -triazyl-(6 )-amino]-stilben-disulfonsäure- (2,2') mit 2 Mol Monoäthylamin umsetzt. Das so erhaltene neue Natriumsalz bildet ein hellgelbes, wasserlösliches Pulver. PATENT CLAIM: A process for the preparation of a new derivative of 4,4'-diamino-stilbene-disulfonic acid- (2,2 '), characterized in that 1 mol of the disodium salt of 4,4'-bis [2,4- dichloro-1,3,5-triazyl- (6) -amino] -stilbene-disulfonic acid- (2,2 ') is reacted with 2 moles of monoethylamine. The new sodium salt thus obtained forms a light yellow, water-soluble powder. Es kann zum optischen Bleichen von Cellulosefasern verwendet werden. UNTERANSPRUCH: Verfahren gemäss Patentanspruch, da durch gekennzeichnet, dass man das genannte Dinatriumsalz bei 35 C in wässeriger Lösung mit dem lllonoäthylamin umsetzt. It can be used for optical bleaching of cellulose fibers. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that said disodium salt is reacted with the ilonoethylamine at 35 ° C. in an aqueous solution.
CH285349D 1949-10-18 1949-10-18 Process for the preparation of a derivative of 4,4'-diamino-stilbene-disulfonic acid- (2,2 '). CH285349A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH281107T 1949-10-18
CH285349T 1949-10-18

Publications (1)

Publication Number Publication Date
CH285349A true CH285349A (en) 1952-08-31

Family

ID=25732059

Family Applications (1)

Application Number Title Priority Date Filing Date
CH285349D CH285349A (en) 1949-10-18 1949-10-18 Process for the preparation of a derivative of 4,4'-diamino-stilbene-disulfonic acid- (2,2 ').

Country Status (1)

Country Link
CH (1) CH285349A (en)

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