CH195530A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH195530A
CH195530A CH195530DA CH195530A CH 195530 A CH195530 A CH 195530A CH 195530D A CH195530D A CH 195530DA CH 195530 A CH195530 A CH 195530A
Authority
CH
Switzerland
Prior art keywords
preparation
monoazo dye
benzoyl
dye
amido
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 CH195530A publication Critical patent/CH195530A/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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
    • C09B29/28—Amino naphthols
    • C09B29/30—Amino naphtholsulfonic acid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

      Zusatzpatent    zum     Hauptpatent    Nr. 18914    Verfahren zur Darstellung eines     Monoazofarbstoffes.       Das vorliegende Patent betrifft ein Ver  fahren zur Darstellung eines     Monoazofarb-          stoffes    und ist dadurch gekennzeichnet, dass  man     4-(N-Benzoyl-N-p-chlorbenzyl)-amido-l-          amidobenzol        diazotiert    und mit     N-Benzoyl-r-          säure    kuppelt.  



  <I>Beispiel;</I>  33,7 Teile     4-(N-Benzoyl-N-p-chlorbenzyl)-          amido-l-amidobenzol    werden mit 6,9 Teilen  Nitrit und 25 Teilen Salzsäure     diazotiert    und  in Gegenwart von     überschüssigem    Natrium  acetat mit 34,3 Teilen     N-Benzoyl-i--säure    ge  kuppelt. Die Kupplung kann auch in Gegen  wart von     Natriumbiearbonat    oder ähnlich  schwach wirkenden     Neutralisationsmitteln    vor  genommen werden.    Der isolierte und getrocknete Farbstoff  bildet ein rotes Pulver und färbt Wolle und  Seide in lebhaften roten Tönen.



      Additional patent to main patent No. 18914 Process for the preparation of a monoazo dye. The present patent relates to a method for the preparation of a monoazo dye and is characterized in that 4- (N-benzoyl-N-p-chlorobenzyl) -amido-l-amidobenzene is diazotized and coupled with N-benzoyl-r acid.



  <I> Example; </I> 33.7 parts of 4- (N-benzoyl-Np-chlorobenzyl) - amido-l-amidobenzene are diazotized with 6.9 parts of nitrite and 25 parts of hydrochloric acid and in the presence of excess sodium acetate 34.3 parts of N-benzoyl-i - acid coupled. The coupling can also be carried out in the presence of sodium carbonate or similarly weak neutralizing agents. The isolated and dried dye forms a red powder and dyes wool and silk in vivid red tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Monoazo- farbstoffes, dadurch gekennzeichnet; dass man 4-(N-Benzoyl-N-p-chlorbenzyl)-amido-l-amido. Benzol diazotiert und mit N-Benzoyl-r-säure kuppelt. Der Farbstoff stellt ein rotes Pulver dar und färbt Wolle und Seide in lebhaften roten Tönen. PATENT CLAIM: Process for the preparation of a monoazo dye, characterized in that; that 4- (N-Benzoyl-N-p-chlorobenzyl) -amido-1-amido. Benzene diazotized and coupled with N-benzoyl-r-acid. The dye is a red powder and dyes wool and silk in vivid red tones.
CH195530D 1937-03-18 1937-03-18 Process for the preparation of a monoazo dye. CH195530A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH189141T 1937-03-18
CH195530T 1937-03-18

Publications (1)

Publication Number Publication Date
CH195530A true CH195530A (en) 1938-01-31

Family

ID=25721752

Family Applications (1)

Application Number Title Priority Date Filing Date
CH195530D CH195530A (en) 1937-03-18 1937-03-18 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH195530A (en)

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