CH267864A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH267864A
CH267864A CH267864DA CH267864A CH 267864 A CH267864 A CH 267864A CH 267864D A CH267864D A CH 267864DA CH 267864 A CH267864 A CH 267864A
Authority
CH
Switzerland
Prior art keywords
dye
azo dye
production
new
sulfonic acid
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Sandoz
Original Assignee
Ag 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 Ag Sandoz filed Critical Ag Sandoz
Publication of CH267864A publication Critical patent/CH267864A/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
    • C09B33/08—Disazo dyes in which the coupling component is a hydroxy-amino compound
    • C09B33/10—Disazo dyes in which the coupling component is a hydroxy-amino compound in which the coupling component is an amino naphthol

Landscapes

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

Description

         

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 264602.    Verfahren zur Herstellung eines neuen     Azofarbstoffes.       Das vorliegende Patent betrifft ein Ver  fahren zur Herstellung eines neuen     Azofarb-          stoffes    und ist dadurch gekennzeichnet, dass  man     diazotierte        4-(4'-Amino-1'-benzoylamido)-          1-oxybenzol-2-carbonsäure    mit dem     Diacetyl-          diaminoazofarbstoff,    den man durch saure  Kupplung von     diazotierter        5-Acetylamino-2-          aminobenzol-l-sulfonsäure    mit     2,

  8-Amino-          naphthol-6-sulfonsäure    und nachfolgende     Ace-          tylierung    erhält, vereinigt und das erhaltene  Kupplungsprodukt zwecks     Verseifung    der im       Naphthalinkern    sitzenden     Acetylaminogruppe     mit     verseifenden    Mitteln behandelt.  



  <I>Beispiel:</I>  56,6 Teile des     Diacetyldiaminoazofarbstof-          fes,    den man durch saure Kupplung von     di-          azotierter        5-Acetylamino-2-amino-benzol-l-sul-          fonsäure    mit     2,8-Aminonaphthol-6-sulfon-          säure    und nachfolgende     Acetylierung    er  hält, werden in 250 Teilen     Wasser    ge  löst.

   Diese Lösung wird mit 20 Teilen     calc.     Soda deutlich alkalisch gestellt und hierauf  unter gutem Rühren mit der     Diazoverbindung     von 27,2 Teilen     4-(4'-Amino-1'-benzoylamido)-          1-oxybenzol-2-carbonsäure    bei 0 bis 100 verei  nigt. Sobald keine     Diazoverbindung    mehr  nachgewiesen werden kann, ist die Kupplung  beendet. Man salzt aus und filtriert den aus-    geschiedenen Farbstoff ab.

   Zur     Verseifung     der im     Naphthalinkern    sitzenden     Acetyl-          aminogruppe    wird der Farbstoff während  etwa einer Stunde in 10     o/oiger        Sodalösung    auf  <B>900</B> erwärmt. Nach Beendigung der Versei  fung wird der gebildete Farbstoff     ausgesalzen,     filtriert und getrocknet.  



  Der neue Farbstoff, ein dunkles Pulver,  färbt Wolle aus saurem Bade in dunkelbrau  nen Tönen von guter     Licht"    Wasch- und  Schweissechtheit.



  <B> Additional patent </B> to main patent No. 264602. Process for the production of a new azo dye. The present patent relates to a process for the production of a new azo dye and is characterized in that diazotized 4- (4'-amino-1'-benzoylamido) - 1-oxybenzene-2-carboxylic acid with the diacetyl diaminoazo dye by acidic coupling of diazotized 5-acetylamino-2-aminobenzene-1-sulfonic acid with 2,

  8-Amino-naphthol-6-sulfonic acid and subsequent acetylation are obtained, combined and the coupling product obtained is treated with saponifying agents for the purpose of saponifying the acetylamino group in the naphthalene core.



  <I> Example: </I> 56.6 parts of the diacetyldiaminoazo dye obtained by acidic coupling of diazoated 5-acetylamino-2-aminobenzene-1-sulphonic acid with 2,8-aminonaphthol-6 sulfonic acid and the subsequent acetylation it holds are dissolved in 250 parts of water.

   This solution is calc with 20 parts. Soda made clearly alkaline and then combined with the diazo compound of 27.2 parts of 4- (4'-amino-1'-benzoylamido) -1-oxybenzene-2-carboxylic acid at 0 to 100 with thorough stirring. As soon as no more diazo compounds can be detected, the coupling is ended. It is salted out and the precipitated dye is filtered off.

   To saponify the acetylamino group in the naphthalene core, the dye is heated to 900 in 10% sodium carbonate solution for about an hour. After the completion of the saponification, the dye formed is salted out, filtered and dried.



  The new dye, a dark powder, dyes wool from an acid bath in dark brown tones of good light, fastness to washing and perspiration.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dass man diazotierte 4-(4'-Amino-1'-benzoylamido)- 1-oxbyenzol-2-carhonsäure mit dem Diacetyl- diaminoazofarbstoff, den man durch saure Kupplung von diazotlerter 5-Acetylamino-2- aminobenzol-l-sulfonsäure mit, 2, PATENT CLAIM: Process for the preparation of a new azo dye, characterized in that diazotized 4- (4'-amino-1'-benzoylamido) -1-oxbyenzene-2-carboxylic acid with the diacetyl diaminoazo dye, which is obtained by acidic coupling of diazotlerter 5 -Acetylamino-2- aminobenzene-l-sulfonic acid with, 2, 8-Aminonaph- thol-6-sulfonsäure und nachfolgende Acety lie- rung erhält, vereinigt und das erhaltene Kupplungsprodukt zwecks Verseifung der im Naphthalinkern sitzenden Acetylaminogruppe mit verseifenden Mitteln behandelt. Der neue Farbstoff, ein dunkles Pulver, färbt, Wolle aus saurem Bade in dunkelbrau nen Tönen von guter Licht-, Wasch- und Schweissechtheit. 8-aminonaphthol-6-sulfonic acid and subsequent acetylation are obtained, combined, and the coupling product obtained is treated with saponifying agents for the purpose of saponifying the acetylamino group located in the naphthalene core. The new dye, a dark powder, dyes wool from an acid bath in dark brown tones that are fast to light, washing and perspiration.
CH267864D 1947-01-17 1947-01-17 Process for the production of a new azo dye. CH267864A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH267864T 1947-01-17
CH264602T 1947-01-17
CH267869T 1947-01-17

Publications (1)

Publication Number Publication Date
CH267864A true CH267864A (en) 1950-04-15

Family

ID=27178088

Family Applications (1)

Application Number Title Priority Date Filing Date
CH267864D CH267864A (en) 1947-01-17 1947-01-17 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH267864A (en)

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