CH232048A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH232048A
CH232048A CH232048DA CH232048A CH 232048 A CH232048 A CH 232048A CH 232048D A CH232048D A CH 232048DA CH 232048 A CH232048 A CH 232048A
Authority
CH
Switzerland
Prior art keywords
red
preparation
disazo dye
dissolves
dye
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH232048A publication Critical patent/CH232048A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
    • C09B33/02—Disazo dyes
    • C09B33/12—Disazo dyes in which the coupling component is a heterocyclic compound

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Photoreceptors In Electrophotography (AREA)

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 230074.    Verfahren zur Herstellung eines     Disazofarbstoffes.       Gegenstand vorliegender Erfindung ist  ein Verfahren zur Herstellung eines     Disazo-          farbstoffes.    Das Verfahren ist dadurch ge-    kennzeichnet, dass man 2     Mol        1-Amino-4-          nitrobenzo:l-2-sulfonsäure    dianotiert 'und mit     i     1     Mol    des     Diiminfo,dipyrazols    des     4,4'-Di-          amino,3,3'-dimethyldip:

  henyl-s    der Formel  
EMI0001.0013     
         kuppelt.     Der neue Farbstoff stellt ein rotes Pul  ver     Üar,    das sieh in Wasser mit rotgelber  Farbe löst und Wolle in roten Tönen färbt.         Beispiel:     2     Mo:l        1-Amino:-4-nitro@b@enzo1-2-sulfonsäure     werden     in        bekannter    Weise     dianotiert    und  mit 1     Mol    des     Diiminoidipyrazols    des     4,4-Di          a.mino"3,3'-dimethyldip:henyls    der Formel  
EMI0001.0026     
           gekuppelt    und abgesaugt.

   Nach .dem     Trock-          nen    erhält man ein rotes Pulver, das sich  in Wasser mit rotgelber Farbe löst und Wolle  rot anfärbt. Die Färbung hat.     bute        Echt.lieits-          eigensehaften.  



      Additional patent to main patent No. 230074. Process for the production of a disazo dye. The present invention relates to a process for the preparation of a disazo dye. The process is characterized in that 2 moles of 1-amino-4-nitrobenzo: l-2-sulfonic acid are dianotated and 1 mole of diiminfo, dipyrazole of 4,4'-di-amino, 3,3 ' -dimethyldip:

  henyl-s of the formula
EMI0001.0013
         clutch. The new dye is a red powder that dissolves in water with a red-yellow color and dyes wool in red tones. Example: 2 Mo: l 1-Amino: -4-nitro @ b @ enzo1-2-sulfonic acid are dianotized in a known manner and treated with 1 mol of the diiminoidipyrazole of 4,4-Di a.mino "3,3'-dimethyldip: henyls the formula
EMI0001.0026
           coupled and extracted.

   After drying, a red powder is obtained that dissolves in water with a red-yellow color and dyes wool red. The coloring has. bute Echt.lieits- proprietary.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Disazo- farbstoffes, dadurch gekennzeichnet, dass man 14Tol 1.-Amino-4-nitroberizol-?-sulfonsäure diazatiert und mit 1 Mol des Diiminodipyr- azols des 4,4'-Dianiiri@o-3,3'-.dimethyldiphenyls der Formel EMI0002.0017 kuppelt. Der neue Farbstoff stellt ein rotes Farbe löst und Wolle in roten Tönen färbt. Pulver :dar, das sich in Wasser mit rotgelber PATENT CLAIM: Process for the production of a disazo dye, characterized in that 14Tol 1.-Amino-4-nitroberizole -? - sulfonic acid is diazated and 4,4'-Dianiiri @ o-3,3 with 1 mol of diiminodipyrazole '-.dimethyldiphenyls of the formula EMI0002.0017 clutch. The new dye represents a red color dissolves and dyes wool in red tones. Powder: dar that dissolves in water with red yellow
CH232048D 1941-09-13 1942-08-19 Process for the preparation of a disazo dye. CH232048A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE232048X 1941-09-13
CH230074T 1942-08-19

Publications (1)

Publication Number Publication Date
CH232048A true CH232048A (en) 1944-04-30

Family

ID=25727440

Family Applications (1)

Application Number Title Priority Date Filing Date
CH232048D CH232048A (en) 1941-09-13 1942-08-19 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH232048A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197455A (en) * 1961-12-15 1965-07-27 Geigy Ag J R Disazo dyestuffs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197455A (en) * 1961-12-15 1965-07-27 Geigy Ag J R Disazo dyestuffs

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