CH116732A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH116732A
CH116732A CH116732DA CH116732A CH 116732 A CH116732 A CH 116732A CH 116732D A CH116732D A CH 116732DA CH 116732 A CH116732 A CH 116732A
Authority
CH
Switzerland
Prior art keywords
acid
new dye
production
parts
tones
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 CH116732A publication Critical patent/CH116732A/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
    • C09B29/0014—Monoazo dyes prepared by diazotising and coupling from diazotized aminonaphthalene
    • 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)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines neuen Farbstoffes.    Es wurde gefunden, dass man     einen    neuen  Farbstoff erhält, wenn man die     diazotierte          3-Aminonaphthalin-1,8-dikarbonsäure    mit     1,8-          Aminonaphthol-3,6-disulfosäure    kuppelt. Der  neue     h arbstoff    bildet ein braunes Pulver,  das sich in Wasser mit     bordeaug,    in Schwe  felsäure mit blauroter Farbe löst. Er färbt  Wolle aus saurem Bade in rotvioletten Tö  nen, welche beim     Nachchromieren    wenig ver  ändert werden. Im Chromdruck erzeugt er  echte, violette Töne.  



       Beispiel:     10,6 Teile     3-Aminonaphthalin-1,8-dikar-          bonsäureanhydrid    werden mit Hilfe von 10  Teilen 30     %iger    Natronlauge und 150 Teilen  Wasser heiss gelöst, nach     Abkühlung    auf  zirka 20' mit 30 Teilen Eis und 25 Teilen  30     %iger    Salzsäure versetzt. Es scheidet sich  die     3-Aminonaphthalin-1,8-dikarbonsäure    aus,  welche auf     Zusatz    von 3,5 Teilen Nitrit       zunächst    in Lösung geht, um bald wieder als       Diazoverbindung    auszufallen.

   Die so erhal-         tene    Suspension wird in eine alkalische Lö  sung von 16 Teilen     1,8-Aminonaphthol-3,6-          disulfosäure    einlaufen gelassen. Nach been  deter Kupplung     wird    das überschüssige Al  kali mit Säure     abgestumpft,    der Farbstoff       ausgesalzen,    filtriert und getrocknet.



  Process for the production of a new dye. It has been found that a new dye is obtained if the diazotized 3-aminonaphthalene-1,8-dicarboxylic acid is coupled with 1,8-aminonaphthol-3,6-disulfonic acid. The new hardener forms a brown powder that dissolves in water with a bordeaug and in sulfuric acid with a blue-red color. It dyes wool from an acid bath in red-violet tones, which are little changed when they are chromed. In chrome printing, it creates real, purple tones.



       Example: 10.6 parts of 3-aminonaphthalene-1,8-dicarboxylic anhydride are dissolved with the aid of 10 parts of 30% strength sodium hydroxide solution and 150 parts of water, after cooling to about 20 'with 30 parts of ice and 25 parts of 30% strength Hydrochloric acid added. The 3-aminonaphthalene-1,8-dicarboxylic acid separates out, which upon the addition of 3.5 parts of nitrite initially dissolves and soon precipitates again as a diazo compound.

   The suspension thus obtained is allowed to run into an alkaline solution of 16 parts of 1,8-aminonaphthol-3,6-disulfonic acid. After coupling has been completed, the excess alkali is blunted with acid, and the dye is salted out, filtered and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes; dadurch gekennzeichnet, dass man die diazotierte 3-Aminonaphthalin-1,8- dikarbonsäure mit 1,8-Aminonaphthol-3,6-di- sulfosäure kuppelt. Der neue Farbstoff bil det ein braunes Pulver, das sich in Wasser mit bordeaug, in Schwefelsäure mit blau roter Farbe löst. Er färbt Wolle aus saurem Bade in rotvioletten Tönen, welche beim Nachchromieren wenig verändert werden. Im Chromdruck erzeugt er echte, violette Töne. PATENT CLAIM: Process for producing a new dye; characterized in that the diazotized 3-aminonaphthalene-1,8-dicarboxylic acid is coupled with 1,8-aminonaphthol-3,6-disulfonic acid. The new dye forms a brown powder that dissolves in water with bordeaug and in sulfuric acid with a blue-red color. It dyes wool from an acid bath in red-violet tones, which are little changed when chroming. In chrome printing, it creates real, purple tones.
CH116732D 1923-12-28 1924-08-16 Process for the production of a new dye. CH116732A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH110287T 1923-12-28
CH116732T 1924-08-16

Publications (1)

Publication Number Publication Date
CH116732A true CH116732A (en) 1926-09-16

Family

ID=25707681

Family Applications (1)

Application Number Title Priority Date Filing Date
CH116732D CH116732A (en) 1923-12-28 1924-08-16 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH116732A (en)

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