CH106555A - Process for the production of a new vat dye. - Google Patents

Process for the production of a new vat dye.

Info

Publication number
CH106555A
CH106555A CH106555DA CH106555A CH 106555 A CH106555 A CH 106555A CH 106555D A CH106555D A CH 106555DA CH 106555 A CH106555 A CH 106555A
Authority
CH
Switzerland
Prior art keywords
production
new
vat dye
dye
new vat
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 CH106555A publication Critical patent/CH106555A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B7/00Indigoid dyes
    • C09B7/02Bis-indole indigos

Description

  

  Verfahren zur Herstellung von einem neuen     Nüpenfarbstoff.       Es     wurde    gefunden, dass man einen  neuen     Küpenfarbstoff    erhält, wenn man       2.1-Naphthindoxyl    mit     5.7-Dibrom.isatin     kondensiert.  



  Der neue Farbstoff stellt ein bräunliches  Pulver dar, das sich in Schwefelsäure mit  blauer Farbe löst. Er bildet eine grüngelbe       Küpe    und färbt Baumwolle in oliven Tönen  von sehr guter Echtheit.  



       Beispiel:     188 Teile     2.1-Naphthindoxyl    und 305  Teile 5.     7-Dibromisatin    werden in 4000 Tei  len Alkohol suspendiert und nach Beigabe  von 5 Teilen konzentriertem Ammoniak zum  Sieden erhitzt. Nach mehrstündigem Kochen  ist die Kondensation beendigt. Der in guter    Ausbeute abgeschiedene Farbstoff wird fil  triert, gewaschen und getrocknet.



  Process for the production of a new pebble dye. It has been found that a new vat dye is obtained if 2.1-naphthindoxyl is condensed with 5.7-dibromo-isatin.



  The new dye is a brownish powder that dissolves in sulfuric acid with a blue color. It forms a greenish-yellow vat and dyes cotton in olive tones with very good fastness.



       Example: 188 parts of 2.1-naphthindoxyl and 305 parts of 5. 7-dibromoisatin are suspended in 4000 parts of alcohol and, after adding 5 parts of concentrated ammonia, heated to the boil. After several hours of boiling, the condensation has ended. The dye deposited in good yield is filtered off, washed and dried.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von einem neuen Küpenfarbstoff, dadurch gekennzeich net, dass man 2. 1-Naphthindoxyl mit 5. 7- Dibromisatin kondensiert. Der neue Farbstoff stellt ein bräunliches Pulver dar, das sich in Schwefelsäure mit blauer Farbe löst. Er bildet eine grüngelbe Küpe und färbt Baumwolle in oliven Tönen von sehr guter Echtheit. PATENT CLAIM: Process for the production of a new vat dye, characterized in that 2. 1-naphthindoxyl is condensed with 5. 7-dibromoisatin. The new dye is a brownish powder that dissolves in sulfuric acid with a blue color. It forms a greenish-yellow vat and dyes cotton in olive tones with very good fastness.
CH106555D 1923-06-28 1923-06-12 Process for the production of a new vat dye. CH106555A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH106555T 1923-06-28

Publications (1)

Publication Number Publication Date
CH106555A true CH106555A (en) 1924-09-01

Family

ID=4365441

Family Applications (1)

Application Number Title Priority Date Filing Date
CH106555D CH106555A (en) 1923-06-28 1923-06-12 Process for the production of a new vat dye.

Country Status (1)

Country Link
CH (1) CH106555A (en)

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