CH197584A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH197584A
CH197584A CH197584DA CH197584A CH 197584 A CH197584 A CH 197584A CH 197584D A CH197584D A CH 197584DA CH 197584 A CH197584 A CH 197584A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
disazo dye
acid
bis
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 CH197584A publication Critical patent/CH197584A/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
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/08—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     Disazofarbstoffes.       Es wurde gefunden, dass man     tetrazotierte          Diaminodiphenoxylessigsäure        (4.4'-Diamino-          diphenylen-3.        3'-bis-glykolsäure)    mit     2-Amino-          5-naphthol-7-sulfonsäure    oder ihren Derivaten,  wie der     2-Amino-5-naphthol-3    .

       7-disulfonsäure,          1-Chlor-2-amirro-5-oxy-7-sulfonsäure        bezw.     ihren     N-Aryl-    oder     N-Alkylsubstitutionspro-          dukten    vereinigen kann. Die so erhältlichen  Farbstoffe liefern in     nachgekupferter    Färbung  blaue Töne von ausserordentlicher Klarheit  und sehr guter Wasch-, Licht- und Säure  echtheit. In diesen Eigenschaften sind sie  den analog gebauten, aus der deutschen Pa  tentschrift 61053 bekanntgewordenen Farb  stoffen erheblich überlegen.  



  Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     Disazo-          farbstoffes.    Das Verfahren ist dadurch gekenn  zeichnet, dass man     tetrazotierte        4.4'-Diamino-          diphenylen-3.3'-bis-glykolsäure    mit     2-p-Ani-          sidylamino-5-naphthol-7-sulfonsäure    vereinigt.    Der erhaltene neue     Farbstoff    stellt ein dunk  les Pulver dar, das sich in Wasser mit blauer  Farbe löst.

   Er liefert, auf Baumwolle aus  dem     Glaubersalzbade    gefärbt und     nachge-          kupfert,    blaue Töne von hoher Klarheit und  sehr guter     Wäsäh-    und Lichtechtheit.  



  <I>Beispiel:</I>  Eine in üblicher Weise hergestellte salz  saure     Tetrazolösung    der     4.4'-Diaminodiphe-          nylen-3.3'-bis-glyko.Isäure    entsprechend 5. g  Nitrit wird unter     .Kühlen    und Rühren in eine       sodaalkalisch    gehaltene Lösung von 26 g     2-          p-Anisidylamino-5-naphthol-7-sulfonsäure    ein  getropft. Nach beendeter Kupplung wird die       Abscheidung    des Farbstoffes durch Zugabe  von Kochsalz vervollständigt.

   Der Farbstoff  liefert, auf Baumwolle aus dem Glaubersalz  bade gefärbt und     nachgekupfert,    blaue Töne  von hoher Klarheit und sehr guter Wasch-,  und Lichtechtheit.



  Process for the preparation of a disazo dye. It has been found that tetrazotized diaminodiphenoxyacetic acid (4,4'-diaminodiphenylene-3,3'-bis-glycolic acid) can be mixed with 2-amino-5-naphthol-7-sulfonic acid or its derivatives, such as 2-amino-5-naphthol -3.

       7-disulfonic acid, 1-chloro-2-amirro-5-oxy-7-sulfonic acid respectively. their N-aryl or N-alkyl substitution products can combine. The dyes obtainable in this way produce blue tones of extraordinary clarity and very good fastness to washing, light and acid in their re-coppered coloring. In terms of these properties, they are considerably superior to the dyes, which are built analogously from the German patent specification 61053.



  The present patent relates to a process for the preparation of a disazo dye. The process is characterized in that tetrazotized 4,4'-diaminodiphenylene-3,3'-bis-glycolic acid is combined with 2-p-anisidylamino-5-naphthol-7-sulfonic acid. The new dye obtained is a dark powder which dissolves in water with a blue color.

   Dyed on cotton from the Glauber's salt bath and then copper-plated, it delivers blue tones of high clarity and very good wash and lightfastness.



  <I> Example: </I> A hydrochloric acid tetrazo solution of 4.4'-diaminodiphenylene-3.3'-bis-glycolic acid, corresponding to 5. g of nitrite, is converted into a solution of alkaline soda while cooling and stirring 26 g of 2- p-anisidylamino-5-naphthol-7-sulfonic acid were added dropwise. After the coupling has ended, the separation of the dye is completed by adding sodium chloride.

   The dye, dyed on cotton from the Glauber's salt bath and then copper-coated, provides blue tones of high clarity and very good wash and lightfastness.

Claims (1)

PATENTANSPRUCR: Verfahren zur Herstellung eines Disazo- farbstoffes, dadurch gekennzeichnet, dass man tetrazotierte 4.4'-Diaminodipheriylen-3.3'- bis-glykolsäure mit2-p-Anisidylamino-5-napli- thol-7-sulfonsäure vereinigt. Der erhaltene Farbstoff stellt ein dunkles Pulver dar, das sich in Wasser mit blauer Farbe löst. PATENT CLAIM: Process for the preparation of a disazo dye, characterized in that tetrazotized 4,4'-diaminodipherylene-3,3'-bis-glycolic acid is combined with 2-p-anisidylamino-5-napitol-7-sulfonic acid. The dye obtained is a dark powder that dissolves in water with a blue color. Er liefert, auf Baumwolle aus dem lxlaubersalzbade gefärbt und nachge- kupfert, blaue Töne von hoher Klarheit und sehr guter Wasch- und Lichtechtheit. I. G. FARBENINDUSTRIE AKTIENGESELLSCHAFT. Vertreter: E. BLUM & Co., Zürich. Dyed on cotton from the lxlaubersalzbath and re-coppered, it provides blue tones of high clarity and very good wash and lightfastness. I. G. FARBENINDUSTRIE AKTIENGESELLSCHAFT. Representative: E. BLUM & Co., Zurich.
CH197584D 1936-02-21 1937-02-11 Process for the preparation of a disazo dye. CH197584A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE197584X 1936-02-21
CH197584T 1937-02-11

Publications (1)

Publication Number Publication Date
CH197584A true CH197584A (en) 1938-05-15

Family

ID=25723014

Family Applications (2)

Application Number Title Priority Date Filing Date
CH197584D CH197584A (en) 1936-02-21 1937-02-11 Process for the preparation of a disazo dye.
CH201528D CH201528A (en) 1936-02-21 1937-02-11 Process for the preparation of a disazo dye.

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH201528D CH201528A (en) 1936-02-21 1937-02-11 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (2) CH197584A (en)

Also Published As

Publication number Publication date
CH201528A (en) 1938-11-30

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