CH288968A - A method of making a polyazo dye. - Google Patents

A method of making a polyazo dye.

Info

Publication number
CH288968A
CH288968A CH288968DA CH288968A CH 288968 A CH288968 A CH 288968A CH 288968D A CH288968D A CH 288968DA CH 288968 A CH288968 A CH 288968A
Authority
CH
Switzerland
Prior art keywords
acid
process according
fumaryl
coupling
diazotization
Prior art date
Application number
Other languages
French (fr)
Inventor
Sandoz S A
Original Assignee
Sandoz Sa
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 Sandoz Sa filed Critical Sandoz Sa
Publication of CH288968A publication Critical patent/CH288968A/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
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/12—Preparation of azo dyes from other azo compounds by acylation of amino groups

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

Description

  

  Procédé de fabrication d'un colorant     polyazoïque.       Le présent brevet a pour objet un pro  cédé de fabrication d'un nouveau     colorànt          polyazdique.    Ce procédé est caractérisé en ce  que l'on condense un molécule     d-LLu    halo  génure de     fumaryle    avec deux molécules du  colorant     aminoazoïque    préparé par     diazo-          tation    de l'acide     1-aminobenzène-4-sullonique,     copulation avec l'acide     1-aminonaphtalène-          6-sulfonique,

          diazotation    subséquente et copu  lation avec le     1-amino-3-méthylbenzène.     



  <I>Exemple:</I>  On dissout dans l'eau<B>à</B> l'aide de soude  caustique et l'on traite<B>à</B> température ordi  naire, par<B>76,5</B> parties de chlorure de     fuma-          ryle    en présence de carbonate de     sodi-um,     <B>525</B> parties du colorant préparé par     diazo-          tation    de l'acide     1-aminobenzène-4-siUfoniqae,     copulation avec l'acide     1-aminonaphtalène-          6-sulfonique,        diazotation    subséquente et copu  lation avec le     1-amino-3-méthylbenzène.    On  agite encore jusqu'à ce que le groupe aminé  libre ne soit plus décelable,

   puis on préci  pite le colorant<B>à</B> chaud par le chlorure de  sodium. On le filtre et on le sèche. Il se pré  sente sous forme, d'une poudre brune qui  teint le coton et la cellulose régénérée en des  nuances brunes bien     rongeables    et très       so.lides   <B>à</B> la lumière.



  A method of making a polyazo dye. The present patent relates to a process for the manufacture of a new polyazdic dye. This process is characterized in that one condenses a molecule d-LLu fumaryl halide with two molecules of the aminoazo dye prepared by diazotization of 1-aminobenzene-4-sullonic acid, coupling with the acid 1- aminonaphthalene- 6-sulfonic acid,

          subsequent diazotization and copulation with 1-amino-3-methylbenzene.



  <I> Example: </I> Dissolve in water <B> with </B> using caustic soda and treat <B> at </B> ordinary temperature, by <B> 76.5 </B> parts of fumaryl chloride in the presence of sodium carbonate, <B> 525 </B> parts of the dye prepared by diazotization of 1-aminobenzene-4-siUfoniqae acid , coupling with 1-aminonaphthalene-6-sulfonic acid, subsequent diazotization and coupling with 1-amino-3-methylbenzene. Stir again until the free amino group is no longer detectable,

   then the hot <B> </B> dye is precipitated with sodium chloride. It is filtered and dried. It comes in the form of a brown powder that dyes cotton and regenerated cellulose in brown shades that are easy to eat and are very soft <B> in </B> the light.

Claims (1)

REVENDICATION: Procédé de fabrication d'un colorant poly- azoïque, caractérisé en ce que l'on condense une molécule d'un halogénure de fumaryle avec deux molécules du colorant amino- azoïque préparé par diazotation de l'acide 1-aminobenzène-4-s-Ltllonique, copulation avec l'acide 1-aminonaphtalène-6-sulfonique, CLAIM: Process for the manufacture of a poly-azo dye, characterized in that one condenses a molecule of a fumaryl halide with two molecules of the amino-azo dye prepared by diazotization of 1-aminobenzene-4- acid. s-Ltllonic, coupling with 1-aminonaphthalene-6-sulfonic acid, diazo- tation subséquente et copulation avec le 1-amino-3-méthylbenzène. Le nouveau colorant se présente sous forme d'une poudre brune qui teint le coton et la cellulose régénérée en des nuances brunes bien rongeables et très solides<B>à</B> la lumière. SOUS-REVENDICATIONS: <B>1.</B> Procédé selon la revendication, caracté- ris6 en ce que l'on emploie le chlorure de fumaryle comme halogénure de fumaryle. 2. subsequent diazotization and coupling with 1-amino-3-methylbenzene. The new dye comes in the form of a brown powder which dyes cotton and regenerated cellulose in brown shades that are easy to eat and are very resistant to light. SUB-CLAIMS: <B> 1. </B> Process according to claim, characterized in that fumaryl chloride is used as the fumaryl halide. 2. Procédé selon la revendication, caracté risé en ce que l'on exécute la condensation en milieu aqueux et en présence d'un agent ca pable de neutraliser l'acide halogène-hydrique qui se forme. <B>3.</B> Procédé selon la revendication et la sous-revendication 2, caractérisé en ce que l'on emploie le ca rbonate de sodium comme agent capable de neutraliser l'acide halogène- hydrique qui se forme. Process according to claim, characterized in that the condensation is carried out in an aqueous medium and in the presence of an agent capable of neutralizing the halogen-water acid which is formed. <B> 3. </B> Process according to claim and sub-claim 2, characterized in that sodium carbonate is used as an agent capable of neutralizing the halogen-hydric acid which forms.
CH288968D 1950-06-23 1950-06-23 A method of making a polyazo dye. CH288968A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH285773T 1950-06-23
CH288968T 1950-06-23

Publications (1)

Publication Number Publication Date
CH288968A true CH288968A (en) 1953-02-15

Family

ID=25732546

Family Applications (1)

Application Number Title Priority Date Filing Date
CH288968D CH288968A (en) 1950-06-23 1950-06-23 A method of making a polyazo dye.

Country Status (1)

Country Link
CH (1) CH288968A (en)

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