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CH146183A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

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Publication number
CH146183A
CH146183A CH146183DA CH146183A CH 146183 A CH146183 A CH 146183A CH 146183D A CH146183D A CH 146183DA CH 146183 A CH146183 A CH 146183A
Authority
CH
Switzerland
Prior art keywords
preparation
red
new
monoazo dye
dye
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH146183A publication Critical patent/CH146183A/en

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Description

  

  Verfahren zur Darstellung eines neuen     Monoazofarbstoffes.       Es wurde gefunden,     dass    man einen neuen  wertvollen     Monoazofarbstoff    erhält, -wenn  man     diazotierten        o-Aminophenyl-o-tolylätlier     mit     p-Toluolsulfo-l-amino,8-naplitol-3,6-di-          sulfosäure    kombiniert, Der neue Farbstoff  stellt     *ein    rotes Pulver dar, welches in Was  ser mit blauroter, in konzentrierter Schwefel  säure mit violetter Farbe löslich ist. Er färbt  auf Wolle und Seide ein sehr klares Blaurot  von sehr guter Licht- und     Walkechtheit.     



  <I>Beispiel:</I>  Die aus<B>19,9 kg</B>     o-Aminophenyl-o-toly!-          ätlier    auf gewöhnlichem Wege erhaltene       Diazolösung        lässt    man in eine wässerige     Lö-          sung        von---4Z,3   <B>kg</B>     p-Toluolsulfo-l-amino-8-          naphtol-3,.6-disulf6eure.und   <B>30 kg</B>     Natrium-          aeetat    bei<B>0</B> bis<B>5'</B>     einlauf'eü--Du:

  #ch    Zugabe  von     Sodalösung    wird allmählich     neutr-ali-ner-t-          Nach   <B>6</B> bis     8stündigein    Rühren ist die Kupp-         lung    beendet. Es wird aufgewärmt,     ausgesal-          zen,    filtriert und getrocknet. Der erhaltene  Farbstoff bildet ein rotes Pulver, das in  Schwefelsäure mit violetter Farbe löslich ist.  Er färbt auf Wolle und Seide ein sehr klares  Blaurot von sehr guter Licht- und     Walkecht-          heit.  



  Process for the preparation of a new monoazo dye. It has been found that a new valuable monoazo dye is obtained -if one combines diazotized o-aminophenyl-o-tolylätlier with p-toluenesulfo-l-amino, 8-naplitol-3,6-disulfonic acid, The new dye provides * a red powder, which is soluble in water with a blue-red color, in concentrated sulfuric acid with a purple color. It dyes wool and silk a very clear blue-red with very good light and milled fastness.



  <I> Example: </I> The diazo solution obtained in the usual way from <B> 19.9 kg </B> o-aminophenyl-o-toly! - is immersed in an aqueous solution of --- 4Z , 3 <B> kg </B> p-toluenesulfo-1-amino-8-naphthol-3, 6-disulf6eure. And <B> 30 kg </B> sodium acetate at <B> 0 </ B > to <B> 5 '</B> einlauf'eü - you:

  #ch addition of soda solution gradually becomes neutral-ali-ner-after <B> 6 </B> to 8 hours of stirring, the coupling is ended. It is warmed up, salted out, filtered and dried. The dye obtained forms a red powder which is soluble in sulfuric acid with a purple color. It dyes wool and silk a very clear blue-red with very good lightfastness and millfastness.

Claims (1)

PATENTA-NSPRUCH: Verfahren zur Darstellung eines neuen Monoazofarbgtoffes, dadurch gekennzeichnet. dass man diazotierten o-Aminophenyl-o-tolyl- äther mit p-Toluolsulfo-l-amino-8-naphtoi- 3,6-disulfosäure kombiniert. Der neue Farb stoff stellt ein rotes Pulver dar, (las sich in Wasser mit blauroter, in konzentrierter Schwefelsäure mit violetter Farbe löst. Er färbt Wolle in sehr klarer blauroter Nuanre -xpn---#eh-r guter Licht- undWalkechtheit. PATENTA-NSPRUCH: Process for the preparation of a new monoazo dye, characterized. that one combines diazotized o-aminophenyl-o-tolyl ether with p-toluenesulfo-1-amino-8-naphthoi- 3,6-disulfonic acid. The new dye is a red powder, (dissolves in water with a blue-red color, in concentrated sulfuric acid with a purple color. It dyes wool in a very clear blue-red shade -xpn --- # eh-r good light and tumble fastness.
CH146183D 1928-10-15 1929-09-13 Process for the preparation of a new monoazo dye. CH146183A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR146183X 1928-10-15
CH143989T 1929-09-13

Publications (1)

Publication Number Publication Date
CH146183A true CH146183A (en) 1931-03-31

Family

ID=25714385

Family Applications (1)

Application Number Title Priority Date Filing Date
CH146183D CH146183A (en) 1928-10-15 1929-09-13 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH146183A (en)

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