CH232607A - Process for the preparation of a new acidic monoazo dye. - Google Patents

Process for the preparation of a new acidic monoazo dye.

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Publication number
CH232607A
CH232607A CH232607DA CH232607A CH 232607 A CH232607 A CH 232607A CH 232607D A CH232607D A CH 232607DA CH 232607 A CH232607 A CH 232607A
Authority
CH
Switzerland
Prior art keywords
new
dye
preparation
monoazo dye
reddish
Prior art date
Application number
Other languages
German (de)
Inventor
Limited Imperial Ch Industries
Original Assignee
Ici Ltd
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 Ici Ltd filed Critical Ici Ltd
Publication of CH232607A publication Critical patent/CH232607A/en

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Description

  

  Verfahren zur Herstellung eines neuen sauren     Nonoazofarbstoffes.       Gegenstand vorliegender Erfindung ist  ein Verfahren zur Herstellung eines neuen  sauren     Monoazofarbstoffes.            Erfindungsgemäss    wird der neue Farb  stoff dadurch hergestellt,     dass    man  N -Äthyl     -N,--omeg%-        ehlorpropionylamino-        4-          aminotoluol        diazotiert    und die so erhaltene       Diazoverbindung    mit     2-1blethogyaaetylamino-          5-naphthol-7-sulfonsäure    kuppelt.  



  Der neue Farbstoff stellt ein scharlach  rotes Pulver dar, welches sich in Wasser       unter    Bildung einer     rötlichorangen    Farbe  und in     konz.    Schwefelsäure unter Bildung  einer roten Lösung löst. Der neue Farbstoff  färbt Wolle aus einem Schwefelsäure und  Glaubersalz enthaltenden Bade in hellen     röt-          liehorangen    Tönen von     guter        Wasch.-,    Walk  und     Lichtechtheit.       Die Erfindung wird durch das folgende  Beispiel     erläutert.    Die Teile bedeuten Ge  wichtsteile.

      <I>Beispiel:</I>  24 Teile     2-N-Athyl-omega-chlorpropionyl-          amino-4-aminotoluol    werden in 350 Teilen  Wasser, enthaltend 25 Teile 36%iger Salz  säure, gelöst. Hierauf wird das Amin durch  Zugabe von 6,9 Teilen     Natriumnitrit        diazo-          tiert.    Die auf diese Weise erhaltene     Diazo-          verbindung    wird unter Rühren einem gekühl  ten Gemisch von 33,3 Teilen     Natrium-2-me-          thogyacetylamino-5-naphthol-7-sulfonat,    28  Teilen     krist.        Natriumacetat    und 500 Teilen  Wasser zugesetzt.

   Nach vollendeter Kupp  lung     wird    der neue, ausgefällte Farbstoff     ab-          filtriert    und getrocknet.



  Process for the preparation of a new acidic nonoazo dye. The present invention relates to a process for the preparation of a new acidic monoazo dye. According to the invention, the new dye is prepared by diazotizing N -ethyl -N, - omeg% - ehlorpropionylamino- 4-aminotoluene and coupling the diazo compound thus obtained with 2-1blethogyaaetylamino-5-naphthol-7-sulfonic acid.



  The new dye is a scarlet red powder, which in water forms a reddish orange color and in conc. Sulfuric acid dissolves to form a red solution. The new dye dyes wool from a bath containing sulfuric acid and Glauber's salt in light reddish-orange shades of good washing, fulling and lightfastness. The invention is illustrated by the following example. The parts mean parts by weight.

      <I> Example: </I> 24 parts of 2-N-ethyl-omega-chloropropionyl-amino-4-aminotoluene are dissolved in 350 parts of water containing 25 parts of 36% strength hydrochloric acid. The amine is then diazotized by adding 6.9 parts of sodium nitrite. The diazo compound obtained in this way is, with stirring, a cooled mixture of 33.3 parts of sodium 2-methogyacetylamino-5-naphthol-7-sulfonate, 28 parts of crystalline. Sodium acetate and 500 parts of water were added.

   After coupling is complete, the new, precipitated dye is filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen sauren Monoazofarbstoffes, dadurch gekenn zeichnet, dass man 2-N-Äthyl-N-omega-ehlor- propionylamino-4-aminotoluol diazotiert und die so erhaltene Diazoverbindung mit 2-Me- thöxy acety lamino- 5 -naphthol <B>-7-</B> sulfonsäu re kuppelt. PATENT CLAIM: Process for the production of a new acidic monoazo dye, characterized in that 2-N-ethyl-N-omega-chloropropionylamino-4-aminotoluene is diazotized and the diazo compound thus obtained is diazotized with 2-methoxy acetylamino- 5 - naphthol <B> -7- </B> sulfonic acid couples. Der neue Farbstoff stellt ein scharhich- rotes Pulver dar. welches sich in Wasser unter Bildung einer rötlichorai gen Farbe und in konz. Schwefelsäure unter Bildung einer roten Lösung löst. The new dye is a sharp red powder. Which in water forms a reddish-orange color and in conc. Sulfuric acid dissolves to form a red solution. Der neue Farbstoff färbt \Volle aus einem Schwefelsäure und Glaubersalz enthaltenden Bade in Bellen röt- lichorangen Tönen von, guter Nasch-, NValk- und Lichtechtheit. The new dye dyes Volle from a bath containing sulfuric acid and Glauber's salt in bark reddish-orange shades of good fastness to snack, lime and light.
CH232607D 1941-10-08 1942-10-07 Process for the preparation of a new acidic monoazo dye. CH232607A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB232607X 1941-10-08

Publications (1)

Publication Number Publication Date
CH232607A true CH232607A (en) 1944-06-15

Family

ID=10192773

Family Applications (1)

Application Number Title Priority Date Filing Date
CH232607D CH232607A (en) 1941-10-08 1942-10-07 Process for the preparation of a new acidic monoazo dye.

Country Status (1)

Country Link
CH (1) CH232607A (en)

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