CH272754A - Process for the preparation of a whitening agent for proteinaceous fibers. - Google Patents

Process for the preparation of a whitening agent for proteinaceous fibers.

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Publication number
CH272754A
CH272754A CH272754DA CH272754A CH 272754 A CH272754 A CH 272754A CH 272754D A CH272754D A CH 272754DA CH 272754 A CH272754 A CH 272754A
Authority
CH
Switzerland
Prior art keywords
mol
nitro
amino
ammonia
acid
Prior art date
Application number
Other languages
German (de)
Inventor
Ag J R Geigy
Original Assignee
Ag J R 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 Ag J R Geigy filed Critical Ag J R Geigy
Publication of CH272754A publication Critical patent/CH272754A/en

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Description

  

  Verfahren zur Herstellung eines     Aufhellungsmittels    für     proteinische    Fasern.    Gegenstand vorliegenden Patentes ist ein  Verfahren zur     Verstellung    eines     Aufliellungs-          mittels    für     proteinisehe    Fasern.

   Das Verfah  ren ist.     dadurch        g,ekennzeiehnet,        dass    man  1     Mol        4-Nitro-4'-amino-stillien-2,2'-disulfon-          sä        ure,    1     Mol        Cy        annxlialogenid,    1 Hol einer    den     Phenplessigsäure-Rest    abgebenden Ver  bindung und 2     Mol    Ammoniak unter Reduk  tion der Nitrogruppe zur     Aminogruppe    der  art aufeinander einwirken lässt,

       dass    ein     St.il-          benderivat    der Formel  
EMI0001.0023     
    entsteht.  Die erhaltene neue Verbindung ist ein  sehwach     gelbstiehiges    Pulver, welches in Was  ser gut löslich ist.     -Lind    aus     saurem    oder neu  tralem Bade zum Aufhellen von Wolle und  Seide geeignet ist.  



       Beispiel:     <B>18,5</B> Teile     C'canurchlurid    werden bei 0 bis  40 mit einer wässerigen Lösung von 48,8 Tei  len     4-Ainino-4'-phenvlaeetylamino-stilbeii        2,2'-          disnlfonsüure,        erlia.hen        aus        4-Nilro-4'-amiilo-          stilben-2,2'-distilforisäure    durch     Aevlieren    mit       Phenylessigsäure    und Reduktion nach     Be-          ehamp,    kondensiert.

   Die weitere     Einsetzung     erfolgt erst bei 20 bis 220, dann bei 90 bis 950  mit 28 Teilen     250loigem    Ammoniak. Nach dem  Isolieren und einer Reinigung stellt die erhal  tene Verbindung in getrocknetem Zustande  ein     seliwaeli    gelbliches Pulver dar, welches    zum Aufhellen von Wolle und Seide geeignet  ist.  



  Diese     Verbindung    lässt sieh     aueli.    wie folgt  erhalten: Man setzt     unter    den obigen. Bedin  gungen     Cpanureliloricl    mit     4-Nitro-4'-amino-          stilben-2,        2'-disulfonsäure,    dann mit Ammo  niak um, reduziert mit Eisen und Salzsäure  nach dem Verfahren von     Beehamp    und     aey-          liert.    das     Reduktionsprodukt    mit     Plienylessig-          säure.  



  Process for the preparation of a whitening agent for proteinaceous fibers. The subject of the present patent is a method for adjusting a luffing means for proteinaceous fibers.

   The procedure is ren. characterized g, ekennzeiehnet that 1 mol of 4-nitro-4'-amino-stillien-2,2'-disulphonic acid, 1 mol of cyanogenide, 1 ha of a compound releasing the phenolic acid residue and 2 mol of ammonia are included Reduction of the nitro group to the amino group can act on each other

       that a syllable derivative of the formula
EMI0001.0023
    arises. The new compound obtained is a very weak, yellowish powder which is readily soluble in water. -Lind made from acidic or neutral bath is suitable for lightening wool and silk.



       Example: <B> 18.5 </B> parts of C'canur acid are at 0 to 40 with an aqueous solution of 48.8 parts of 4-amino-4'-phenylamino-stilbeii 2,2'-disinfonic acid, erlia. hen from 4-nilro-4'-amiilostilbene-2,2'-distilforic acid by evolving with phenylacetic acid and reduction according to Beehamp, condensed.

   The further use takes place first at 20 to 220, then at 90 to 950 with 28 parts of 250% ammonia. After isolating and cleaning, the compound obtained, when dry, is a yellowish powder which is suitable for lightening wool and silk.



  This connection lets see aueli. obtained as follows: One sets under the above. Conditions Cpanureliloricl with 4-nitro-4'-amino-stilbene-2, 2'-disulfonic acid, then with ammonia, reduced with iron and hydrochloric acid according to the method of Beehamp and aeyelated. the reduction product with plienyl acetic acid.

 

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur IIerstellung eines Aufhel- lungsmitt.els für proteiniselie Fasern, dadurch gekennzeichnet, dass man 1 Mol 4-Nitro-4'- amino-atilbeii 2,2'-d.isulfonsä.-Ltre, 1 Mol. Cya- nurhalogenid, <B> PATENT CLAIM: </B> Process for the production of a brightening agent for proteinaceous fibers, characterized in that 1 mol of 4-nitro-4'-amino-atiliferous 2,2'-disulfonic acid is used , 1 mole of cyano halide, 1 Mol einer den Phenyiessig- säure-Rest abgebenden Verbindung und 2 Mol Ammoniak unter Reduktion der Nitrogruppe zur Aminogruppe derart aufeinander einwir ken lässt, da.ss ein Stilbenderivat der Formel EMI0002.0001 entsteht. Die erhaltene neue Verbindung ist ein schwach gelbstichiges Pulver, welches in Was ser gut löslich ist und aus saurem oder neu tralem Bade zum Aufhellen von Wolle und Seide geeignet ist. UNTERANSPRMIE 1. 1 mol of a compound releasing the phenyiacetic acid radical and 2 mol of ammonia, with reduction of the nitro group to the amino group, can act on one another in such a way that a stilbene derivative of the formula EMI0002.0001 arises. The new compound obtained is a slightly yellowish powder, which is readily soluble in water and is suitable from acidic or neutral baths for lightening wool and silk. SUB-CLAIM 1. Verfahren nach Patentanspruch, da durch gekennzeichnet, dass man 1'_12o1 4-Nitro- 4'-amino-stilben-2,2'-disulfonsäure mit 1 Mol Cyanurhalogenid umsetzt, auf das Konden- sationsprodukt 2 Mol Ammoniak einwirken lässt, die Nitrogruppe zur Aminogruppe redu ziert und mit einer den Plieny lessigsäure-Rest abgebenden Verbindung aeyliert. 2. Process according to claim, characterized in that 1'_12o1 4-nitro-4'-amino-stilbene-2,2'-disulfonic acid is reacted with 1 mol of cyanuric halide, 2 mol of ammonia is allowed to act on the condensation product, the nitro group to Amino group redu ed and aeylated with a compound donating the Plieny lessetic acid residue. 2. Verfahren nach Patentanspruch, da durch gekennzeichnet, dass man 1 Mol 4-Nitro- 4'-amino-stilben-2,2'-disulfonsäure mit einer den Phenylessigsäure-Rest abgebenden Ver bindung acyliert, die Nitrogruppe zur Amino- gruppe reduziert, mit 1 Mo1 Cyannrhalogeilid kondensiert und auf das Kondensationspro dukt 2 Mol Ammoniak einwirken lässt. Process according to claim, characterized in that 1 mol of 4-nitro-4'-aminothilbene-2,2'-disulfonic acid is acylated with a compound releasing the phenylacetic acid radical, the nitro group is reduced to the amino group, with 1 Mo1 Cyannrhalogeilid condenses and 2 mol ammonia can act on the condensation product.
CH272754D 1948-06-04 1948-06-04 Process for the preparation of a whitening agent for proteinaceous fibers. CH272754A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH269483T 1948-06-04
CH272754T 1948-06-04

Publications (1)

Publication Number Publication Date
CH272754A true CH272754A (en) 1950-12-31

Family

ID=25731088

Family Applications (1)

Application Number Title Priority Date Filing Date
CH272754D CH272754A (en) 1948-06-04 1948-06-04 Process for the preparation of a whitening agent for proteinaceous fibers.

Country Status (1)

Country Link
CH (1) CH272754A (en)

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