CH121004A - Process for the preparation of a developer dye. - Google Patents

Process for the preparation of a developer dye.

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Publication number
CH121004A
CH121004A CH121004DA CH121004A CH 121004 A CH121004 A CH 121004A CH 121004D A CH121004D A CH 121004DA CH 121004 A CH121004 A CH 121004A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
acid
pyrazolone
red
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 CH121004A publication Critical patent/CH121004A/en

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Description

  

  Verfahren zur Darstellung eines     Entwieklerfarbstoifes.       Es wurde gefunden, dass ein wertvoller       Entwicklerfarbstoff    erhalten wird, wenn man       tetrazotiertes        o-Tolidin,        Orthokresotinsäure    und       2'-Methyl-3'-amino-5'-sulfo-l-phenyl-3-methyl-          5-pyrazolon    in molekularen Mengen aufein  ander einwirken lässt, wobei man die     Tetrazo-          verbindung    sowohl zuerst mit der     Kresotin-          säure,    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     ungebeizte    Baumwolle  in lebhaft orangen Tönen, welche durch     Di-          azotieren    auf der Faser und nachfolgende  Entwicklung mit     Betanaphtol    ohne wesent  liche     Nuancenänderung    waschecht fixiert  werden.  



  <I>Beispiel 1:</I>  Die     Tetrazoditolyllösung    aus 21,2 Teilen       o-Tolidin    wird mit der     sodaalkalischen    Lösung  von 16 Teilen     Orthokresotinsäure    zum Zwi  schenprodukt vereinigt und dasselbe mit der  schwachalkalisch reagierenden Lösung des Di-         natriumsalzes    von 28,3 Teilen     2'-Metbyl-3'-          amino    -5'-     sulfo-l-    p     henyl-        3-methyl-5-pyrazolon     weitergekuppelt. Die Kombination ist nach  wenigen Stunden beendigt. Man wärmt als  dann auf 70   C an und salzt den Farbstoff aus.

      <I>Beispiel 2:</I>  Zu der     Terazoditolyllösung    aus 21,2 Teilen       o-Tolidin    lässt man bei     0-511    C die Lösung  des     Dinatriumsalzes    von 28,3 Teilen     2'-lyIethyl-          3'-amino-5'-        sulfo-l-phenyl-3-methyl-5-pyrazo-          lon        zufliessen.    Sobald unverändertes     Tetrazo-          ditolyl    sich nicht mehr nachweisen lässt,

   gibt  man die Lösung von 16 Teilen     Orthokresotin--          säure    und 15 Teilen Natron 100 % zu und  lässt bei     gewöhlicher        Temperatur        weiterrühren.     Nach wenigen     Stunden    ist die Reaktion be  endigt. Man wärmt auf 70   C an, neutrali  siert das überschüssige Natron mit     Salzsäure.     und salzt den     Farbstoff    aus.



  Process for the preparation of a developing dye. It has been found that a valuable developer dye is obtained when tetrazotized o-tolidine, orthocresotinic acid and 2'-methyl-3'-amino-5'-sulfo-1-phenyl-3-methyl-5-pyrazolone are added in molecular amounts left to act, whereby the tetrazo compound can first be coupled with the cresotinic 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 unstained cotton in vivid orange tones, which are fixed by diazotization on the fiber and subsequent development with betanaphthol without any significant change in shade.



  <I> Example 1: </I> The tetrazoditolyl solution of 21.2 parts of o-tolidine is combined with the soda-alkaline solution of 16 parts of orthocresotinic acid to form the intermediate product and the same with the slightly alkaline solution of the disodium salt of 28.3 parts 2 '-Metbyl-3'-amino -5'-sulfo-1-phenyl-3-methyl-5-pyrazolone coupled further. The combination ends after a few hours. Then it is warmed to 70 ° C. and the dye is salted out.

      <I> Example 2: </I> The solution of the disodium salt of 28.3 parts of 2'-methyl-3'-amino-5'- is added to the terazoditolyl solution of 21.2 parts of o-tolidine at 0-511 ° C. sulfo-l-phenyl-3-methyl-5-pyrazolone flow in. As soon as unchanged tetrazoditolyl can no longer be detected,

   the solution of 16 parts of orthocresotinic acid and 15 parts of 100% baking soda is added and stirring is continued at normal temperature. The reaction is over after a few hours. The mixture is warmed to 70 ° C. and the excess soda is neutralized with hydrochloric acid. and salt out the dye.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Entwick- lerfarbstoffes, dadurch gekennzeichnet, dass man tetrazotiertes o-Tolidin, Orthokresotin- säur e uiid 2'-iX, ethyl-3'-amino-5'-sulfo-l-plienyl- 3-triethyl-5-pyrazolon in molekularen Mengen aufeinander einwirken lässt. PATENT CLAIM: Process for the preparation of a developer dye, characterized in that tetrazotized o-tolidine, orthocresotinic acid e uiid 2'-iX, ethyl-3'-amino-5'-sulfo-1-plienyl-3-triethyl- Let 5-pyrazolone act on each other in molecular amounts. Der neue Farb stoff bildet ein braunrotes Pulver, das sich in Wasser mit oranger, in konzentrierter Schwe felsäure mit rotvioletter Farbe löst. Er färbt ungebeizte Baumwolle in lebhäft orangen Tönen, welche durch Diazotieren auf der Faser und nachfolgende Entwicklung rnit Betanaph- tol ohne wesentliche Nuancenänderung wasch echt fixiert werden. 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 unstained cotton in lively orange tones, which are fixed by diazotization on the fiber and subsequent development with betanaphthol without any significant change in shade.
CH121004D 1925-03-28 1925-11-02 Process for the preparation of a developer dye. CH121004A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE121004X 1925-03-28
CH119229T 1925-10-17

Publications (1)

Publication Number Publication Date
CH121004A true CH121004A (en) 1927-06-16

Family

ID=25709188

Family Applications (1)

Application Number Title Priority Date Filing Date
CH121004D CH121004A (en) 1925-03-28 1925-11-02 Process for the preparation of a developer dye.

Country Status (1)

Country Link
CH (1) CH121004A (en)

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