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CH151880A - Process for the preparation of a vat dye. - Google Patents

Process for the preparation of a vat dye.

Info

Publication number
CH151880A
CH151880A CH151880DA CH151880A CH 151880 A CH151880 A CH 151880A CH 151880D A CH151880D A CH 151880DA CH 151880 A CH151880 A CH 151880A
Authority
CH
Switzerland
Prior art keywords
preparation
vat dye
yellow
condensation
dye
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 CH151880A publication Critical patent/CH151880A/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
    • C09B57/00—Other synthetic dyes of known constitution
    • C09B57/12—Perinones, i.e. naphthoylene-aryl-imidazoles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Description

  

  Verfahren zur Darstellung eines     Küpenfarbstoffes.       Gegenstand dieses Patentes ist ein Ver  fahren zur Darstellung eines     Küpenfarb-          stoffes,    welches dadurch     ,gekennzeichnet    ist,  dass man 1. 4. 5. 8 -     Naphtalintetracarbon-          sKuremonophenylimid        mit        ortho-Phenylen-          diamin        kondensiert.     



  <I>Beispiel:</I>  10     Gewichtsteile    1. 4. 5. 8 -     Naphtalin-          tetracarbonsäuremonophenylimid    werden mit  4     Gewichtsteilen        ortho-Phenylen-dia@min    in  100 Raumteilen Eisessig zirka eine halbe  Stunde zum Sieden erhitzt. Nach dem Ab  kühlen wird .der gebildete Farbstoff abge  saugt, mit Wasser gewaschen und getrocknet.  Er     kristallisiert    in gelben Blättchen und löst  sich in     konzentrierter    Schwefelsäure mit  gelber Farbe. Er färbt aus roter     Küpe    die  pflanzliche Faser     rotstiehig    gelb.



  Process for the preparation of a vat dye. The subject of this patent is a process for the preparation of a vat dye, which is characterized in that 1. 4. 5. 8-naphthalene tetracarbon- s curemonophenylimide is condensed with ortho-phenylenediamine.



  <I> Example: </I> 10 parts by weight 1. 4. 5. 8 - naphthalene tetracarboxylic acid monophenylimide are heated to boiling with 4 parts by weight of ortho-phenylene-dia @ min in 100 parts by volume of glacial acetic acid for about half an hour. After cooling, the dyestuff formed is sucked off, washed with water and dried. It crystallizes in yellow leaves and dissolves in concentrated sulfuric acid with a yellow color. From a red vat he dyes the vegetable fibers a reddish yellow.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass man 1.4.5.8 - Naphtalintetracarbonsäure- monophenylimid mit ortho-Phenylen-,diamin kondensiert. Der so erhaltene Farbstoff kristallisiert in gelben Blättchen und löst sich in kon zentrierter Schwefelsäure mit gelber Farbe. Er färbt aus- roter güpe die pflanzliche Faser rotstiehig ;gelb. UNTERANSPRÜCHE: 1. PATENT CLAIM: Process for the preparation of a vat dye, characterized in that 1.4.5.8 - naphthalene tetracarboxylic acid monophenylimide is condensed with ortho-phenylene-, diamine. The dye thus obtained crystallizes in yellow flakes and dissolves in concentrated sulfuric acid with a yellow color. It dyes the vegetable fibers from the red güpe reddish yellow. SUBCLAIMS: 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensa tion in Gegenwart eines Lösungsmittels durchführt. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensa tion in Gegenwart überschüssigen Eis essigs in der Siedehitze durchführt. Process according to claim, characterized in that the condensation is carried out in the presence of a solvent. 2. The method according to claim, characterized in that the condensation is carried out in the presence of excess glacial acetic acid at the boiling point.
CH151880D 1929-06-05 1930-12-15 Process for the preparation of a vat dye. CH151880A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH143998T 1929-06-05
DE151880X 1930-01-25

Publications (1)

Publication Number Publication Date
CH151880A true CH151880A (en) 1931-12-31

Family

ID=25714409

Family Applications (1)

Application Number Title Priority Date Filing Date
CH151880D CH151880A (en) 1929-06-05 1930-12-15 Process for the preparation of a vat dye.

Country Status (1)

Country Link
CH (1) CH151880A (en)

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