CH106425A - Process for the production of an indigoid dye. - Google Patents

Process for the production of an indigoid dye.

Info

Publication number
CH106425A
CH106425A CH106425DA CH106425A CH 106425 A CH106425 A CH 106425A CH 106425D A CH106425D A CH 106425DA CH 106425 A CH106425 A CH 106425A
Authority
CH
Switzerland
Prior art keywords
production
dye
indigoid dye
brown
indigoid
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 CH106425A publication Critical patent/CH106425A/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
    • C09B7/00—Indigoid dyes
    • C09B7/12—Other thionaphthene indigos

Landscapes

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

Description

         

      Zusatzpatent    zum Hauptpatent     NTr.        100705       Verfahren zur Herstellung eines     indigoiden    Farbstoffes.    Es wurde gefunden,     da.ss    man einen     indi-          goiden    Farbstoff herstellen kann, wenn man  das     2-Dibromid    des     5-Chlor-2,1-thion.aphthisa-          tins    mit     Acenaphthenon        kondensiert.    Der  Farbstoff stellt ein braunes Pulver dar, das  sieh in konzentrierter Schwefelsäure mit  blauer Farbe löst.

   Mit     Hydrosulfit    und Na  tronlauge bildet er eine gelbbraune     Küpe,    aus  welcher Baumwolle in sehr echten braunen  Tönen gefärbt wird.  



       Beispiel:     Zu einer heissen Lösung von 392,5 Teilen       2-Dibromid    des     5-Chlor-2,1-thionaphthisatins     in 4000 Teilen Eisessig wird eine Lösung von  168 Teilen     Acenaphthenon    in 1500 Teilen  Eisessig gegeben. Die     Farbstoffbildung    be  ginnt sofort und ist nach kurzem Kochen be-    endigt. Der abgeschiedene Farbstoff wird  filtriert,     ,mit        Alkohol    gewaschen und ge  trocknet.



      Additional patent to the main patent NTr. 100705 Process for the production of an indigoid dye. It has been found that an indigoid dye can be produced if the 2-dibromide of 5-chloro-2,1-thione.aphthisatin is condensed with acenaphthenone. The dye is a brown powder that dissolves in concentrated sulfuric acid with a blue color.

   With hydrosulfite and sodium hydroxide solution, it forms a yellow-brown vat from which cotton is dyed in very real brown tones.



       Example: A solution of 168 parts of acenaphthenone in 1500 parts of glacial acetic acid is added to a hot solution of 392.5 parts of 2-dibromide of 5-chloro-2,1-thionaphthisatin in 4000 parts of glacial acetic acid. The coloration begins immediately and ends after a short boiling. The deposited dye is filtered off, washed with alcohol and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines indigoiden Farbstoffes, dadurch gekennzeichnet, dass man das 2-Dibromid des 5-Chlor-2,1-thionaphth- isatins mit Acenaphtheno:n kondensiert. Der Farbstoff stellt ein braunes Pulver dar, das sich in konzentrierter Schwefelsäure mit blauer Farbe löst. Claim: Process for the production of an indigoid dye, characterized in that the 2-dibromide of 5-chloro-2,1-thionaphthisatin is condensed with acenaphtheno: n. The dye is a brown powder that dissolves in concentrated sulfuric acid with a blue color. Mit Hydrosulfit und Na tronlauge bildet er eine gelbbraune Küpe, aus welcher Baumwolle in sehr echten branznen Tönen gefärbt wird. With hydrosulphite and sodium hydroxide solution, it forms a yellow-brown vat from which cotton is dyed in very real, burnt tones.
CH106425D 1922-11-18 1923-05-17 Process for the production of an indigoid dye. CH106425A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH100705T 1922-11-18
CH106425T 1923-05-17

Publications (1)

Publication Number Publication Date
CH106425A true CH106425A (en) 1924-08-16

Family

ID=25705840

Family Applications (1)

Application Number Title Priority Date Filing Date
CH106425D CH106425A (en) 1922-11-18 1923-05-17 Process for the production of an indigoid dye.

Country Status (1)

Country Link
CH (1) CH106425A (en)

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