CH121001A - Process for the preparation of a developer dye. - Google Patents

Process for the preparation of a developer dye.

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Publication number
CH121001A
CH121001A CH121001DA CH121001A CH 121001 A CH121001 A CH 121001A CH 121001D A CH121001D A CH 121001DA CH 121001 A CH121001 A CH 121001A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
methyl
orange
pyrazolone
Prior art date
Application number
Other languages
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 CH121001A publication Critical patent/CH121001A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung eines     Entwieklerfarbstoües.       Es wurde gefunden, dass ein wertvoller       Entwicklerfarbstoff    erhalten wird, wenn man       tetrazotiertes        Benzidin,        Salizylsäure    und     2'-          Methyl-    3'-     amino-        "5'-        sulfo        -1-phenyl-3-methyl-          5-pyrazolon        inmolekularen    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 ziegelrotes  Pulver, das sich in Wasser mit oranger, in  konzentrierter Schwefelsäure mit rotvioletter  Farbe löst. Er färbt ungeheizte Baumwolle  in lebhaft gelborangen Tönen, welche durch       Diazotieren    auf der Faser und nachfolgende  Entwicklung mit     Betanaphtol        ohnewesentliche          Nuancenänderung    waschecht fixiert werden.

    <I>Beispiel 1:</I>  Die     Tetrazodiphenlyllösung    aus 18,4 Teilen       Benzidin    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    weiter  gekuppelt. .Die Kombination ist nach wenigen  Stunden beendigt. Beim Anwärmen auf<B>50'</B>  geht der Farbstoff in Lösung.

   Er scheidet  sich beim     Aussalzen    als oranges Harz aus,  das beim Abkühlen in ein gut     filtrierbares     Pulver zerfällt.  



  <I>Beispiel 2:</I>  Zu der     Tetrazodiphenyllösung    aus 18,4 Tei  len     Benzidin    lässt man bei 0-5 o C die Lösung  des     Dinatriumsalzes    von 28;3 Teilen     2'-ATethyl-          3'-amino-        5'-sulfo-l-phenyl-3-methyl-5-pyrazo-          lon    zufliessen.

   Sobald unverändertes     Tetrazo-          diphenyl    sich nicht mehr nachweisen lässt,  gibt man die Lösung von 14,5 Teilen     Salizyl=          säure        und        15        Teilen        Natron        100%        zu        und     lässt bei gewöhnlicher Temperatur     weiterrühren.     Nach wenigen Stunden ist die Reaktion be  endigt. Man wärmt auf 50 o C an, neutrali  siert das überschüssige Natron mit 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 when tetrazotized benzidine, salicylic acid and 2'-methyl-3'-amino- "5'-sulfo -1-phenyl-3-methyl-5-pyrazolone are allowed to act on one another in molecular amounts ,

   where you can couple the tetrazo compound both first with the salicylic acid, as well as with the pyrazolone derivative. The new dye forms a brick-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 yellow-orange tones, which are fixed by diazotizing on the fiber and subsequent development with betanaphtol without any significant change in shade.

    <I> Example 1 </I> The tetrazodiphenlyl solution of 18.4 parts of benzidine 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 2'-methyl-3'-amino-5'-sulfo-1-phenyl-3-methyl-5-pyrazolone coupled further. The combination ends after a few hours. When heated to <B> 50 '</B>, the dye dissolves.

   When it is salted out, it separates out as an orange resin, which breaks down into an easily filterable powder when it cools down.



  <I> Example 2: </I> The solution of the disodium salt of 28; 3 parts of 2'-ATethyl- 3'-amino-5'- is added to the tetrazodiphenyl solution of 18.4 parts of benzidine at 0-5 ° sulfo-l-phenyl-3-methyl-5-pyrazolone flow in.

   As soon as unchanged tetrazodiphenyl can no longer be detected, the solution of 14.5 parts of salicylic acid and 15 parts of 100% sodium bicarbonate is added and stirring is continued at normal temperature. The reaction is over after a few hours. The mixture is warmed to 50 o C, the excess sodium bicarbonate is neutralized with hydrochloric acid and the dye is salted out.

 

Claims (1)

PATENTANSPRUCH: Verfähren zur Darstellung eines Entwick- lerfarbstoffes, dadurch gekennzeichnet, dass man tetrazotiertes Benzidin, Salizylsäure und 2'- llTethy 1-3'- amino - 5'- sulfo -1-phenyl-3-methyl- 5-pyrazolon in molekularen Mengen aufeinander einwirken lässt. PATENT CLAIM: Process for the preparation of a developer dye, characterized in that tetrazotized benzidine, salicylic acid and 2'-llTethy 1-3'-amino-5'-sulfo -1-phenyl-3-methyl-5-pyrazolone in molecular amounts can interact. Der neue Farbstoff bildet ein ziegelrotes Pulver, das sich in Wasser mit oranger, in konzentrierter Schwefelsäure mit rotvioletter Farbe löst. Er färbt unge- beizte Baumwolle in lebhaft gelborangen Tönen, welche durch Diazotieren auf der Faser und nachfolgende Entwicklung mit Betanaphthol ohne wesentliche Nuancenänderung waschecht fixiert werden. The new dye forms a brick-red powder that dissolves in water with an orange color and in concentrated sulfuric acid with a red-violet color. It dyes unstained cotton in lively yellow-orange tones, which are fixed by diazotizing on the fiber and subsequent development with betanaphthol without any significant change in shade.
CH121001D 1925-03-28 1925-11-02 Process for the preparation of a developer dye. CH121001A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE121001X 1925-03-28
CH119229T 1925-10-17

Publications (1)

Publication Number Publication Date
CH121001A true CH121001A (en) 1927-06-16

Family

ID=25709185

Family Applications (1)

Application Number Title Priority Date Filing Date
CH121001D CH121001A (en) 1925-03-28 1925-11-02 Process for the preparation of a developer dye.

Country Status (1)

Country Link
CH (1) CH121001A (en)

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