CH211027A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH211027A
CH211027A CH211027DA CH211027A CH 211027 A CH211027 A CH 211027A CH 211027D A CH211027D A CH 211027DA CH 211027 A CH211027 A CH 211027A
Authority
CH
Switzerland
Prior art keywords
production
azo dye
new azo
new
dye
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Ind Basel filed Critical Chem Ind Basel
Publication of CH211027A publication Critical patent/CH211027A/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

Landscapes

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

Description

  

  Verfahren zur Herstellung eines neuen     Azofarbstoffes.       Es wurde     gefunden,    dass man einen neuen       Azofarbstoff    erhält, wenn man     diazotiertes          2.5-Dichlor-l-aminobenzol        mit    dem     2-Oxy-          2'-        (4"-sulf    o)     -phenyl-3.4-pseudonaphthazimid     vereinigt.  



  Der neue Farbstoff bildet ein braunes  Pulver; er erzeugt, aus saurem Bade gefärbt,  auf Wolle echte braune Töne.    <I>Beispiel:</I>    <B>16.2</B> Teile des     2.5-Dichlor-l-aminobenzols     werden wie üblich     diazotiert    und     in    eine Lö  sung von 34.1 Teilen     2-Oxy-2'-(4"-sulfo)-          phenyl-3.4-pseudonaphthazimid,    40 Teilen  30 %     iger        Natriumhydroxydlösung,    15 Teilen    Soda und<B>1000</B> Teilen Wasser     eingetragen.     Der gebildete Farbstoff fällt sofort aus. Der  braune Niederschlag wird     filtriert    und ge  trocknet.



  Process for the production of a new azo dye. It has been found that a new azo dye is obtained if diazotized 2,5-dichloro-1-aminobenzene is combined with 2-oxy-2'- (4 "-sulfo) -phenyl-3,4-pseudonaphthazimide.



  The new dye forms a brown powder; When dyed from an acid bath, it produces real brown tones on wool. <I> Example: </I> <B> 16.2 </B> parts of 2.5-dichloro-1-aminobenzene are diazotized as usual and converted into a solution of 34.1 parts of 2-oxy-2 '- (4 "-sulfo ) - phenyl-3,4-pseudonaphthazimide, 40 parts of 30% sodium hydroxide solution, 15 parts of soda and 1000 parts of water are added. The dye formed precipitates out immediately. The brown precipitate is filtered and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dass man diazotiertes 2.5-Dichlor-l-aminobenzol mit dem 2-Oxy-2'-(4"-sulfo)-phenyl-3.4- pseudonaphthazimid vereinigt. Der neue Farbstoff bildet ein braunes Pulver; er erzeugt, aus saurem Bade gefärbt, auf Wolle echte braune Töne. PATENT CLAIM: Process for the production of a new azo dye, characterized in that diazotized 2.5-dichloro-l-aminobenzene is combined with 2-oxy-2 '- (4 "-sulfo) -phenyl-3.4-pseudonaphthazimide. The new dye forms a brown powder; when dyed from an acid bath, it produces real brown tones on wool.
CH211027D 1937-06-30 1937-06-30 Process for the production of a new azo dye. CH211027A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH211027T 1937-06-30
CH208952T 1937-06-30

Publications (1)

Publication Number Publication Date
CH211027A true CH211027A (en) 1940-08-15

Family

ID=25724643

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211027D CH211027A (en) 1937-06-30 1937-06-30 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH211027A (en)

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