CH179680A - Process for the production of a new vat dye. - Google Patents

Process for the production of a new vat dye.

Info

Publication number
CH179680A
CH179680A CH179680DA CH179680A CH 179680 A CH179680 A CH 179680A CH 179680D A CH179680D A CH 179680DA CH 179680 A CH179680 A CH 179680A
Authority
CH
Switzerland
Prior art keywords
production
meso
vat dye
new vat
green 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 CH179680A publication Critical patent/CH179680A/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
    • C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
    • C09B3/70—Benzo-, naphtho-, and anthra-dianthrones

Landscapes

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

Description

  

  Verfahren zur Herstellung eines neuen     Küpenfarbstoifes.       Es wurde gefunden, dass man einen neuen       Iiüpenfarbstoff,    das     2.2'-Imino-meso-benz-          dianthron,    erhält, wenn man auf 2-     Amino-          meso-benzdianthron    alkoholisches Kalium  hydroxyd einwirken lässt.  



  Das     2.2'-Imino-meso-benzdianthron    bil  det ein dunkelbraunes Pulver, das sich in       Schwefelsäure    rein grün löst. Es     küpt    mit  blaustichig grüner Farbe und erzeugt auf  Baumwolle rotbraune Färbungen.  



       Beispiel:     In eine auf 140' erwärmte Schmelze von  120 Teilen     I%aliumhydroxyd    und 120     Vo-          liimteilen    absolutem Alkohol werden bei 140  bis 150   20 Teile     2-Amino-meso-benzdian-          thron    eingetragen. Man hält noch 1 Stunde  bei 150 bis<B>160',</B> gibt die Schmelze in Was  ser und arbeitet wie üblich auf. Das hier  verwendete     2-Amino-meso-benzdianthronwird     erhalten, indem man zum Beispiel das 2-         Phtalimino-meso-benzdianthron    mittelst     ]Ely-          drazinhydrat    in     Pyridin    verseift.

   Letzteres  kann man erhalten durch Reduktion von  zum Beispiel     2-Phtalimino-l.        1'-dianthrachi-          nonyl    mittelst Kupferpulver in konzentrier  ter     Schwefelsäure.  



  Process for the production of a new vat dye. It has been found that a new pulp dye, 2.2'-imino-meso-benz-dianthrone, is obtained when alcoholic potassium hydroxide is allowed to act on 2-amino-meso-benzdianthrone.



  The 2.2'-imino-meso-benzdianthrone forms a dark brown powder that dissolves in sulfuric acid in a pure green color. It hats with a bluish green color and produces red-brown colorations on cotton.



       Example: 20 parts of 2-amino-mesobenzdianthron are introduced into a melt of 120 parts of 1% aluminum hydroxide and 120 parts by volume of absolute alcohol, heated to 140 '. It is held at 150 to 160 'for another hour, the melt is poured into water and worked up as usual. The 2-amino-meso-benzdianthrone used here is obtained by, for example, saponifying the 2-phthalimino-meso-benzdianthrone by means of elyrazine hydrate in pyridine.

   The latter can be obtained by reducing, for example, 2-phthalimino-1. 1'-dianthraquinoneyl by means of copper powder in concentrated sulfuric acid.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Küpenfarbstoffes, dadurch gekennzeichnet, dass man auf 2-Amino-meso-benzdianthron alkoholisches Kaliumhydroxyd einwirken lässt. Das so erhaltene 2. 2'-Imino-meso-benz- dianthron bildet ein dunkelbraunes Pulver, das sich in Schwefelsäure rein grün löst. Es küpt mit blaustichig grüner Farbe und er zeugt auf Baumwolle rotbraune Färbungen. PATENT CLAIM: Process for the production of a new vat dye, characterized in that alcoholic potassium hydroxide is allowed to act on 2-amino-meso-benzdianthrone. The 2nd 2'-imino-meso-benz-dianthrone thus obtained forms a dark brown powder which dissolves in sulfuric acid in a pure green color. It hates with a bluish green color and it produces red-brown colorations on cotton.
CH179680D 1934-02-27 1934-02-27 Process for the production of a new vat dye. CH179680A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH179680T 1934-02-27
CH176034T 1934-02-27

Publications (1)

Publication Number Publication Date
CH179680A true CH179680A (en) 1935-09-15

Family

ID=25719794

Family Applications (1)

Application Number Title Priority Date Filing Date
CH179680D CH179680A (en) 1934-02-27 1934-02-27 Process for the production of a new vat dye.

Country Status (1)

Country Link
CH (1) CH179680A (en)

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