CH198316A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH198316A
CH198316A CH198316DA CH198316A CH 198316 A CH198316 A CH 198316A CH 198316D A CH198316D A CH 198316DA CH 198316 A CH198316 A CH 198316A
Authority
CH
Switzerland
Prior art keywords
preparation
monoazo dye
dye
amido
acid
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 CH198316A publication Critical patent/CH198316A/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

  

  <B>Zusatzpatent</B>     zum    Hauptpatent Nr. 189141.    Verfahren zur     Darstellung    eines     Ilonoazofarbstoffes.       Das vorliegende Patent betrifft ein Ver  fahren zur Darstellung eines     Monoazofarb-          stoffes    und ist dadurch gekennzeichnet, dass  man     4-(N-o-Chlorbenzoyl-N-benzyl)-amido-l-          amidobenzol        diazotiert    und mit     N-Benzoyl-r-          säure    kuppelt.  



  <I>Beispiel:</I>  33,7 Teile     4-(N-o-Chlorbenzoyl-N-benzyl)-          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-r-säure    ge  kuppelt. Die Kupplung kann auch in Gegen  wart von     Nätriumbicarbonat    oder ähnlich  schwachwirkenden     Neutralisätionsmitteln    vor  genommen werden,.    Der isolierte und getrocknete Farbstoff  stellt ein rotes Pulver dar und färbt Wolle  und Seide in lebhaften roten Tönen.



  <B> Additional patent </B> to main patent no. 189141. Process for the preparation of an ilonoazo dye. The present patent relates to a process for the preparation of a monoazo dye and is characterized in that 4- (N-o-chlorobenzoyl-N-benzyl) -amido-l-amidobenzene is diazotized and coupled with N-benzoyl-r-acid.



  <I> Example: </I> 33.7 parts of 4- (No-chlorobenzoyl-N-benzyl) - 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 with 34.3 parts of N-benzoyl-r-acid coupled. The coupling can also be made in the presence of sodium bicarbonate or similar weakly acting neutralizing agents. The isolated and dried dye is a red powder and dyes wool and silk in vivid red tones.

Claims (1)

PATENTANOPRÜCH: Verfahren zur Darstellung eines Monoazo- farbstoffes; dadurch gekennzeichnet, dass man 4.(N-o-Chlorbenzoyl-N-benzyl)-amido-l-amido- benzol diäzotiert und mit N-Benzoyl-r-säure kuppelt. Der Farbstoff stellt ein rotes Pulver dar und färbt Wolle und Seide in lebhaften roten Tönen. PATENTANOPRÜCH: Process for the preparation of a monoazo dye; characterized in that 4. (N-o-chlorobenzoyl-N-benzyl) -amido-l-amido-benzene is diacetated and coupled with N-benzoyl-r-acid. The dye is a red powder and dyes wool and silk in vivid red tones.
CH198316D 1937-03-18 1937-03-18 Process for the preparation of a monoazo dye. CH198316A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH198316T 1937-03-18
CH189141T 1937-03-18

Publications (1)

Publication Number Publication Date
CH198316A true CH198316A (en) 1938-06-15

Family

ID=25721754

Family Applications (1)

Application Number Title Priority Date Filing Date
CH198316D CH198316A (en) 1937-03-18 1937-03-18 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH198316A (en)

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