CH122910A - Process for the preparation of a developer dye. - Google Patents

Process for the preparation of a developer dye.

Info

Publication number
CH122910A
CH122910A CH122910DA CH122910A CH 122910 A CH122910 A CH 122910A CH 122910D A CH122910D A CH 122910DA CH 122910 A CH122910 A CH 122910A
Authority
CH
Switzerland
Prior art keywords
preparation
blue
dye
mol
developer
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 CH122910A publication Critical patent/CH122910A/en

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Description

  

  Verfahren zur Darstellung eines     Entwichlerfarbstoffes.       Es wurde gefunden, dass ein wertvoller       Entwicklerfarbstoff    erhalten wird, wenn man  1     Mol.        tetrazotiertes        o-Tolidin    mit 2     Mol.          3'-Amino    -     4'-methyl-        5'-sulfo    -     l-phenyl-5-pyra-          zolon-3-karbonsäure    kuppelt.  



  Der neue     Farbstoff    bildet ein braun  schwarzes Pulver, das sich in Wasser mit  blauroter, in konzentrierter Schwefelsäure  mit blauvioletter Farbe löst. Er färbt     unge-          beizte    Baumwolle in     bordeauroten    Tönen,  welche durch     Diazotieren    auf der Faser und  nachfolgende Entwicklung mit     f-Naphtol     ohne wesentliche     Nuancenänderung    wasch  echt fixiert werden.  



       Beispiel     Die     Tetrazolösung    aus 21,2 Teilen     o-To-          lidin    wird bei<B>0-51</B> C mit. der neutralen  Lösung des     Trinatriumsalzes    von 62,6 Teilen       3'-Amino-4'-methyl    -     5'-sulfo-        i-phenyl-5-pyra-          zolon-3-karbonsäure    verrührt. Die Kupplung    ist nach wenigen Stunden beendigt. Es wird  sodann die Lösung von 20 Teilen     kalzinierter     Soda     zugegeben,    aufgekocht und der Farb  stoff     ausgesalzen.  



  Process for the preparation of a developer dye. It has been found that a valuable developer dye is obtained if 1 mole of tetrazotized o-tolidine is mixed with 2 moles of 3'-amino-4'-methyl-5'-sulfo-1-phenyl-5-pyrazolone-3 -carboxylic acid couples.



  The new dye forms a brown-black powder that dissolves in water with a blue-red color, and in concentrated sulfuric acid with a blue-violet color. It dyes unstained cotton in bordeaux red tones, which are fixed by diazotizing on the fiber and subsequent development with f-naphthol without any significant change in shade.



       Example The tetrazo solution from 21.2 parts of o-tolidin is at <B> 0-51 </B> C with. the neutral solution of the trisodium salt of 62.6 parts of 3'-amino-4'-methyl-5'-sulfo-i-phenyl-5-pyrazolone-3-carboxylic acid was 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 Entwick- lerfarbstoffes, dadurch gekennzeichnet, dass man 1 Mol. tetrazotiertes o-Tolidin mit 2 Mol. 3'-Amino-4'-methyl- 5'-sulfo -l-phenyl-5- pyrazolon-3-karbonsäure kuppelt. Der neue Farbstoff bildet ein braun schwarzes Pulver, das sich in Wasser mit blauroter, in konzentrierter Schwefelsäure mit blauvioletter Farbe löst. Claim: Process for the preparation of a developer dye, characterized in that 1 mol. Tetrazotized o-tolidine is mixed with 2 mol. 3'-amino-4'-methyl-5'-sulfo-1-phenyl-5-pyrazolone-3 -carboxylic acid couples. The new dye forms a brown-black powder that dissolves in water with a blue-red color, and in concentrated sulfuric acid with a blue-violet color. Er färbt ungebeizte Baumwolle in bordeauroten Tönen, welche durch Diazotieren auf der Faser und nach folgende Entwicklung mit ss-Naphtol ohne wesentliche Nuancenänderung waschecht fixiert werden. It dyes unstained cotton in bordeaux red shades, which are fixed by diazotizing on the fiber and, after subsequent development with ss-naphtol, without any significant change in shade.
CH122910D 1925-10-17 1926-05-14 Process for the preparation of a developer dye. CH122910A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH119229T 1925-10-17
GB122910X 1926-02-19

Publications (1)

Publication Number Publication Date
CH122910A true CH122910A (en) 1927-10-17

Family

ID=25709213

Family Applications (1)

Application Number Title Priority Date Filing Date
CH122910D CH122910A (en) 1925-10-17 1926-05-14 Process for the preparation of a developer dye.

Country Status (1)

Country Link
CH (1) CH122910A (en)

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