CH122909A - Process for the preparation of a developer dye. - Google Patents

Process for the preparation of a developer dye.

Info

Publication number
CH122909A
CH122909A CH122909DA CH122909A CH 122909 A CH122909 A CH 122909A CH 122909D A CH122909D A CH 122909DA CH 122909 A CH122909 A CH 122909A
Authority
CH
Switzerland
Prior art keywords
preparation
blue
dye
developer
developer dye
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 CH122909A publication Critical patent/CH122909A/en

Links

Landscapes

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

Description

  

      Verfahren    zur Darstellung eines     Entwieklerfarbstoffes.       Es wurde gefunden, dass ein wertvoller       Entwicklerfarbstoff    erhalten wird, wenn mau  1 Molekül     tetrazotiertes        Benzidin    mit 2 Mo  lekülen     3'-Amino-4'-methyl-5'-sulfo-l-phenyl-          5-pyrazolon-3-karbonsäure    kuppelt.  



  Der neue Farbstoff bildet ein braunschwar  zes Pulver, das sich in Wasser mit blauroter,  in konzentrierter Schwefelsäure mit violetter  Farbe löst. Er färbt     ungebeizte    Baumwolle  in blauroten Tönen, welche durch     Diazotieren     auf der Faser und nachfolgende Entwicklung  mit     R-Naphtol    ohne wesentliche Nuancen  änderung waschecht fixiert werden.  



       Beispiel     Die     Tetrazolösung    aus 18,4 Teilen     Ben-          zidip    wird bei 0-5   mit der Lösung des       Trinatriumsalzes    von 62,6 Teilen     3'-Amino-          4'-methyl-5'-        sulfo        -1-phenyl-5-pyrazolon-3-kar-          bonsäure    verrührt. Die Kupplung ist nach    wenigen Stunden beendigt. Es wird sodann  die Lösung von 20 Teilen     kalzinierter    Soda  zugegeben, aufgekocht und der Farbstoff aus  gesalzen.



      Process for the preparation of a developer dye. It has been found that a valuable developer dye is obtained when 1 molecule of tetrazotized benzidine is coupled with 2 molecules of 3'-amino-4'-methyl-5'-sulfo-1-phenyl-5-pyrazolone-3-carboxylic acid.



  The new dye forms a brownish-black powder that dissolves in water with a blue-red color and in concentrated sulfuric acid with a purple color. It dyes unstained cotton in blue-red tones, which are fixed by diazotizing on the fiber and subsequent development with R-naphtol without any significant changes in nuances.



       EXAMPLE The tetrazo solution of 18.4 parts of benzidip is mixed at 0-5 with the solution of the trisodium salt of 62.6 parts of 3'-amino-4'-methyl-5'-sulfo-1-phenyl-5-pyrazolone-3 -carboxylic acid stirred. The coupling is completed after a few hours. The solution of 20 parts of calcined soda is then added, the mixture is boiled and the dye is salted out.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Entwiek- lerfarbstoffes, dadurch gekennzeichnet, dass man 1 Molekül tetrazotiertes Benzidin mit 2 Molekülen 3'-Amino-4'-methyl-5'-sulfo-l- phenyl-5-pyrazolon-3-karbonsäure kuppelt. Der neue Farbstoff bildet ein braunschwar zes Pulver, das sich in Wasser mit blauroter, in konzentrierter Schwefelsäure mit violetter Farbe löst. PATENT CLAIM: Process for the preparation of a developer dye, characterized in that 1 molecule of tetrazotized benzidine is coupled with 2 molecules of 3'-amino-4'-methyl-5'-sulfo-1-phenyl-5-pyrazolone-3-carboxylic acid. The new dye forms a brownish-black powder that dissolves in water with a blue-red color and in concentrated sulfuric acid with a purple color. Er färbt ungebeizte Baumwolle in blauroten Tönen, welche durch Diazotieren auf der Faser und nachfolgende Entwicklung mit ss-Naphtol ohne wesentliche Nuancen änderung waschecht fixiert werden. It dyes unstained cotton in blue-red tones, which are fixed by diazotizing on the fiber and subsequent development with ss-naphtol without any significant changes in nuances.
CH122909D 1925-10-17 1926-05-14 Process for the preparation of a developer dye. CH122909A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH119229T 1925-10-17
GB122909X 1926-02-19

Publications (1)

Publication Number Publication Date
CH122909A true CH122909A (en) 1927-10-17

Family

ID=25709212

Family Applications (1)

Application Number Title Priority Date Filing Date
CH122909D CH122909A (en) 1925-10-17 1926-05-14 Process for the preparation of a developer dye.

Country Status (1)

Country Link
CH (1) CH122909A (en)

Similar Documents

Publication Publication Date Title
CH122909A (en) Process for the preparation of a developer dye.
CH122911A (en) Process for the preparation of a developer dye.
CH121972A (en) Process for the preparation of a developer dye.
CH122910A (en) Process for the preparation of a developer dye.
CH121973A (en) Process for the preparation of a developer dye.
CH122908A (en) Process for the preparation of a developer dye.
CH122906A (en) Process for the preparation of a developer dye.
CH122916A (en) Process for the preparation of a developer dye.
CH122907A (en) Process for the preparation of a developer dye.
CH121016A (en) Process for the preparation of a developer dye.
CH121011A (en) Process for the preparation of a developer dye.
CH121012A (en) Process for the preparation of a developer dye.
CH121013A (en) Process for the preparation of a developer dye.
CH121009A (en) Process for the preparation of a developer dye.
CH119895A (en) Process for the production of a new dye.
CH121005A (en) Process for the preparation of a developer dye.
CH121006A (en) Process for the preparation of a developer dye.
CH100854A (en) Process for the preparation of an acidic monoazo dye.
CH122914A (en) Process for the preparation of a developer dye.
CH121014A (en) Process for the preparation of a developer dye.
CH122912A (en) Process for the preparation of a developer dye.
CH121010A (en) Process for the preparation of a developer dye.
CH121003A (en) Process for the preparation of a developer dye.
CH121015A (en) Process for the preparation of a developer dye.
CH122917A (en) Process for the preparation of a developer dye.