CH120996A - Process for the preparation of a developer dye. - Google Patents

Process for the preparation of a developer dye.

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Publication number
CH120996A
CH120996A CH120996DA CH120996A CH 120996 A CH120996 A CH 120996A CH 120996D A CH120996D A CH 120996DA CH 120996 A CH120996 A CH 120996A
Authority
CH
Switzerland
Prior art keywords
acid
preparation
tetrazodiphenyl
red
orange
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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 CH120996A publication Critical patent/CH120996A/en

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Description

  

      Verfahren    zur     Darstellung    eines     Entivieklerfarlostoffes.       Es wurde gefunden, dass ein wertvoller       Entwicklerfarbstoff    erhalten wird, wenn man       Di-p-tetrazodiphenyl,        Orthokresotinsäure    und       2'-Methyl-3'-amino-5'-sulfo-l-phenyl-5-pyrazo-          lon-3-karbonsäure    in molekularen Mengen  aufeinander einwirken lässt, wobei man die       Tetrazoverbindung    sowohl zuerst mit der       Kresotinsäure,    wie auch mit dem     Pyrazolon-          derivat    kuppeln kann.  



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



       Beispiel   <I>1:</I>  Die     Tetrazodiphenyllösung    aus 18,4 Tei  len     Benzidin    wird mit der     sodaalkalischen     Lösung von 16 Teilen     Orthokresotinsäure     zum Zwischenprodukt vereinigt und dasselbe  mit der schwach alkalisch reagierenden         2'-Methyl-3'-amino-5'-sulfo-l-pheriyl-5-pyrazo-          lori-3-karbonsäure    weitergekuppelt. Die Kom  bination ist nach wenigen Stunden beendigt.  Es wird alsdann auf<B>50"</B> C angewärmt und  der in Lösung gegangene Farbstoff     ausge-          salzen.     



  <I>Beispiel 2:</I>  Zu der     Tetrazodiphenyllösung    aus 18,4  Teilen     Benzidin    lässt man bei 0-5   C inner  halb einer Viertelstunde unter gutem Rühren  die neutrale Lösung des     Trinatriumsalzes    von  31,3 Teilen     2'-lyIethyl-3'-amino-5'-sulfo-l-          phenyl-5-pyrazolon-3-karboneäure    zufliessen.

    Sobald     uiiverändertesTetrazodiphenyl    sich nicht  mehr nachweisen lässt, gibt man die Lösung von  16 Teilen     Orthokresotinsäure    und 15 Teilen       Xatron        1000/0    zu und lässt bei gewöhnlicher  Temperatur     weiterrühren.    Nach wenigen  Stunden ist die Reaktion beendigt. Man  wärmt auf<B>50'</B> C an, neutralisiert das über  schüssige Natron mit -Salzsäure und salzt  den Farbstoff aus.



      Process for the preparation of an Entivieklerfarlostoffes. It has been found that a valuable developer dye is obtained if di-p-tetrazodiphenyl, orthocresotinic acid and 2'-methyl-3'-amino-5'-sulfo-1-phenyl-5-pyrazolone-3-carboxylic acid in Molecular amounts can act on each other, it being possible to couple the tetrazo compound first with the cresotinic 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 unstained cotton in vivid orange tones. which are fixed by diazoting on the fiber and subsequent development with betanaphtol without any significant change in shade.



       Example <I> 1: </I> The tetrazodiphenyl solution of 18.4 parts of benzidine is combined with the soda-alkaline solution of 16 parts of orthocresotinic acid to form the intermediate and the same with the weakly alkaline 2'-methyl-3'-amino-5 ' -sulfo-1-pheriyl-5-pyrazolori-3-carboxylic acid coupled further. The combination is completed after a few hours. It is then warmed to <B> 50 "</B> C and the dye that has dissolved is salted out.



  <I> Example 2: </I> The neutral solution of the trisodium salt of 31.3 parts of 2'-methyl-3 'is added to the tetrazodiphenyl solution of 18.4 parts of benzidine at 0-5 C within a quarter of an hour with thorough stirring. -amino-5'-sulfo-1-phenyl-5-pyrazolone-3-carbonic acid flow in.

    As soon as the modified tetrazodiphenyl can no longer be detected, the solution of 16 parts of orthocresotinic acid and 15 parts of Xatron 1000/0 is added, and stirring is continued at normal temperature. The reaction is over after a few hours. Warm up to <B> 50 '</B> C, neutralize the excess baking soda with hydrochloric acid and salt out the dye.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Entwick- man Di-p-tetrazodiphenyl, Orthokresotinsä ure und 2'-lllethyl-3'-amirro-5'-sulfo-l-phenyl-h- py razolorr-3-harlronsäure in molekularen Men gen aufeinander einwirken lähat. Der neue Farbstoff bildet ein ziegelrotes Pulver, das sich in Wasser mit oranger, in konzentrierter Schwefelsäure -mit rotvioletter Farbe löst. PATENT CLAIM: Process for the preparation of a development of di-p-tetrazodiphenyl, orthocresotinic acid and 2'-lllethyl-3'-amirro-5'-sulfo-l-phenyl-h-py razolorr-3-harlronic acid in molecular quantities on top of one another act lähat. 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. Er färbt urgebeizte 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 originally stained cotton in lively orange tones, which are fixed by diazotizing on the fiber and subsequent development with betanaphthol without any significant change in shade.
CH120996D 1925-03-28 1925-10-17 Process for the preparation of a developer dye. CH120996A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE120996X 1925-03-28
CH119229T 1925-10-17

Publications (1)

Publication Number Publication Date
CH120996A true CH120996A (en) 1927-06-16

Family

ID=25709180

Family Applications (1)

Application Number Title Priority Date Filing Date
CH120996D CH120996A (en) 1925-03-28 1925-10-17 Process for the preparation of a developer dye.

Country Status (1)

Country Link
CH (1) CH120996A (en)

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