CH121003A - Process for the preparation of a developer dye. - Google Patents

Process for the preparation of a developer dye.

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Publication number
CH121003A
CH121003A CH121003DA CH121003A CH 121003 A CH121003 A CH 121003A CH 121003D A CH121003D A CH 121003DA CH 121003 A CH121003 A CH 121003A
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CH
Switzerland
Prior art keywords
preparation
dye
methyl
red
parts
Prior art date
Application number
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German (de)
Inventor
Sandoz Chemische Fabri Vormals
Original Assignee
Chem Fab Vormals Sandoz
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 Chem Fab Vormals Sandoz filed Critical Chem Fab Vormals Sandoz
Publication of CH121003A publication Critical patent/CH121003A/en

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      Verfahren    zur     Darstellung    eines     Entwieklerfarbstoffes.       Es wurde gefunden, dass ein wertvoller       Entwicklerfarbstoff    erhalten wird, wenn man       tetrazotiertes        o-Tolidin,        Salizylsäure    und 2'  Methyl-3'-arnino-5'-sulfo-l-phenyl-3-methyl-5  pyrazolori in molekularen Mengen aufeinander  einwirken lässt, wobei man die     Tetrazover-          bindung    sowohl zuerst mit der     Salizylsäure,     wie auch mit dem     Pyrazolonderivat    kuppeln  kann.  



  Der neue     Farbstoff    bildet ein braunrotes  Pulver, das sich in Wasser mit oranger, in  konzentrierter Schwefelsäure mit rotvioletter  Farbe löst. Er färbt ungeheizte Baumwolle  in lebhaft orangen Tönen, welche durch       Diazotieren    auf der Faser und nachfolgende  Entwicklung mit     Betanaphtol    ohne     wesent-          liche        Nuancenänderung    waschecht fixiert  werden.  



  <I>Beispiel</I>     .T     Die     Tetrazoditolyllösung    aus 21,2 Teilen       o-Tolidin    wird mit der     sodaalkalischen    Lösung  von 14,5 Teilen     Salizylsäure    zum Zwischen  produkt vereinigt und dasselbe mit der schwach  alkalisch reagierenden Lösung des Dinatrium-    Salzes von 28,3 Teilen     2'-Methyl-3'-amino-5'-          sulfo-l-phenyl-3-methyl-5-pyrazolon    weiterge  kuppelt. Die Kombination ist nach wenigen  Stunden beendigt. Man wärmt     alsdann    auf  70 o C an und salzt den Farbstoff aus.  



       Beispiel   <I>2:</I>  Zu der     Tetrazoditolyllösung    aus 21,2  Teilen     o-Tolidin    lässt man bei 0-5o C die  Lösung des     Dinatriumsalzes    von 28,3 Teilen     2'-          MMethyl-3'-amino-        5'-sulfo-1-phenyl-3-methyl-5-          pyrazolon        zufliessen.    Sobald unverändertes       Tetrazoditolyl    sich nicht mehr     nachweisen     lässt, gibt man die- Lösung von 14,

  5 Teilen       Salizylsäure        und        15        Teilen        Natron        100        %        zu     und lässt bei gewöhnlicher Temperatur weiter  rühren. Nach wenigen Stunden ist die Reak  tion beendigt. Man wärmt auf 70 o C an,  neutralisiert das überschüssige Natron     mii     Salzsäure und salzt den Farbstoff aus.



      Process for the preparation of a developer dye. It has been found that a valuable developer dye is obtained if tetrazotized o-tolidine, salicylic acid and 2 'methyl-3'-arnino-5'-sulfo-1-phenyl-3-methyl-5-pyrazolori are allowed to act on one another in molecular amounts , it being possible to couple the tetrazo compound first with the salicylic acid as well as with the pyrazolone derivative.



  The new dye forms a brown-red powder that dissolves in water with an orange color, and in concentrated sulfuric acid with a red-violet color. It dyes unheated cotton in lively orange tones, which are fixed by diazotizing on the fiber and subsequent development with betanaphtol without any significant change in shade.



  <I> Example </I> .T The tetrazoditolyl solution of 21.2 parts of o-tolidine is combined with the soda-alkaline solution of 14.5 parts of salicylic acid to form the intermediate product and the same with the slightly alkaline solution of the disodium salt of 28 3 parts of 2'-methyl-3'-amino-5'-sulfo-1-phenyl-3-methyl-5-pyrazolone weiterge coupled. The combination ends after a few hours. It is then warmed to 70 ° C. and the dye is salted out.



       Example <I> 2: </I> The tetrazoditolyl solution of 21.2 parts of o-tolidine is added to the solution of the disodium salt of 28.3 parts of 2'-MMethyl-3'-amino-5'- sulfo-1-phenyl-3-methyl-5-pyrazolone flow in. As soon as unchanged tetrazoditolyl can no longer be detected, the solution of 14,

  Add 5 parts of salicylic acid and 15 parts of 100% baking soda and stir at normal temperature. The reaction is over after a few hours. The mixture is warmed to 70 ° C., the excess sodium bicarbonate is neutralized with hydrochloric acid and the dye is salted out.

 

Claims (1)

<B>PATENTANSPRÜCHE:</B> Verfahren zur Darstellung eines Entwick- lerfarbstoffes, dadurch gekennzeichnet, dass man tetrazotiertes o-Tolidin, Salizylsäure und 2'-I11ethyl-3'-amino-5'-sulfo-l-phetiyl-3-methy l- 5-pyrazolon in molekularen Mengen aufein ander einwirken lässt. Der neue Farbstoff bildet ein braunrotes Pulver, das sich in Wasser mit oranger, in konzentrierter Schwefel- säure mit rotvioletter Farbe löst. <B> PATENT CLAIMS: </B> Process for the preparation of a developer dye, characterized in that tetrazotized o-tolidine, salicylic acid and 2'-11ethyl-3'-amino-5'-sulfo-1-phetiyl-3- methyl 5-pyrazolone can act on one another in molecular amounts. The new dye forms a brown-red powder that dissolves in water with an orange color and in concentrated sulfuric acid with a red-violet color. Er färbt ungeheizte Baumwolle in lebhaft orangen Tönen, welche durch Diazotieren auf der Faser und nachfolgende Entwicklung mit Betanaphtol ohne wesentliche Nuancenände- rung waschecht fixiert werden. It dyes unheated cotton in lively orange tones, which are fixed by diazotizing on the fiber and subsequent development with betanaphtol without any significant change in shade.
CH121003D 1925-03-28 1925-11-02 Process for the preparation of a developer dye. CH121003A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE121003X 1925-03-28
CH119229T 1925-10-17

Publications (1)

Publication Number Publication Date
CH121003A true CH121003A (en) 1927-06-16

Family

ID=25709187

Family Applications (1)

Application Number Title Priority Date Filing Date
CH121003D CH121003A (en) 1925-03-28 1925-11-02 Process for the preparation of a developer dye.

Country Status (1)

Country Link
CH (1) CH121003A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE929487C (en) * 1950-07-30 1955-06-27 Arnhold Stolz Sheet feeder for separating and removing sheets from the stack with several alternating suction systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE929487C (en) * 1950-07-30 1955-06-27 Arnhold Stolz Sheet feeder for separating and removing sheets from the stack with several alternating suction systems

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