CH116734A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH116734A
CH116734A CH116734DA CH116734A CH 116734 A CH116734 A CH 116734A CH 116734D A CH116734D A CH 116734DA CH 116734 A CH116734 A CH 116734A
Authority
CH
Switzerland
Prior art keywords
new dye
acid
production
parts
red color
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 CH116734A publication Critical patent/CH116734A/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)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 110287.    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     2,5-          Aminonaphthol-7-sulfosäure    kuppelt.

   Der  neue Farbstoff bildet ein     grünlichbraunes     Pulver, das sich in Wasser mit gelbroter,     in     Schwefelsäure mit blauroter Farbe löst: Er  färbt Wolle aus saurem Bade in orangen  Tönen, welche beim     Nachchromieren        gelb-          bräun    werden. Im Chromdruck erzeugt er  echte, ziegelrote Töne.  



       Beispiel:     <B>10,6</B> 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     Yoiger    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 12 Teilen     2,5-Aminonaphthol-7-          sulfosäure    einlaufen gelassen. Nach been  deter Kupplung wird das     überschüssige    Al  kali mit Säure abgestumpft, der Farbstoff       ausgesalzen,        filtriert    und getrocknet.



      Additional patent to main patent no. 110287. 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 2,5-aminonaphthol-7-sulfonic acid.

   The new dye forms a greenish-brown powder that dissolves in water with a yellow-red color and in sulfuric acid with a blue-red color: it dyes wool from an acid bath in orange tones, which turn yellow-brown when chromium-plating. In chrome printing, it creates real, brick-red tones.



       Example: 10.6 parts of 3-aminonaphthalene-1,8-dicarboxylic anhydride are dissolved hot 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 Ice and 25 parts of 30% hydrochloric acid are 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 12 parts of 2,5-aminonaphthol-7-sulfonic 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 Farbstoff es, dadurch gekennzeichnet, dass man die diazotierte 3-Aminonaphthalin-1,8- dikarbonsäure mit 2,5-Aminonaphthol-7-sulfo- säure kuppelt. Der neue Farbstoff bildet ein grünlichbraunes Pulver, das sich in Was ser mit gelbroter, in Schwefelsäure mit blau roter Farbe löst. PATENT CLAIM: Process for the production of a new dye, characterized in that the diazotized 3-aminonaphthalene-1,8-dicarboxylic acid is coupled with 2,5-aminonaphthol-7-sulfonic acid. The new dye forms a greenish-brown powder that dissolves in water with yellow-red color and in sulfuric acid with blue-red color. Er färbt Wolle aus saurem Bade in orangen Tönen, welche beim Nach- chromieren gelbbraun werden. Im Chrom druck - erzeugt er echte, ziegelrote Töne. It dyes wool from an acid bath in orange tones, which turn yellow-brown when chromed. In chrome printing - it creates real, brick-red tones.
CH116734D 1923-12-28 1924-08-16 Process for the production of a new dye. CH116734A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH110287T 1923-12-28
CH116734T 1924-08-16

Publications (1)

Publication Number Publication Date
CH116734A true CH116734A (en) 1926-09-16

Family

ID=25707683

Family Applications (1)

Application Number Title Priority Date Filing Date
CH116734D CH116734A (en) 1923-12-28 1924-08-16 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH116734A (en)

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