CH121499A - Process for the production of a new vat dye. - Google Patents

Process for the production of a new vat dye.

Info

Publication number
CH121499A
CH121499A CH121499DA CH121499A CH 121499 A CH121499 A CH 121499A CH 121499D A CH121499D A CH 121499DA CH 121499 A CH121499 A CH 121499A
Authority
CH
Switzerland
Prior art keywords
production
new
vat dye
red
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 CH121499A publication Critical patent/CH121499A/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
    • C09B7/06—Indone-thionapthene indigos

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 118233.    Verfahren zur Herstellung eines neuen     Küpenfarbstoifes.       Es wurde gefunden, dass man einen neuen       Küpenfarbstoff    erhält, wenn man 1     Mo1.        4.6-          Dimethyl-3-oxythionaphten    mit einem Mole  kül     7-Chlorisatin    kondensiert. Der neue Farb  stoff bildet ein rotes Pulver, löst sich in  konzentrierter Schwefelsäure mit     violettroter     Farbe und gibt mit     Hydrosulfit    und Natron  lauge eine     blassorange        Küpe,    aus welcher  Baumwolle echt rotorange gefärbt wird.  



       Beispiel:     178 Teile     4.6-Dimethyl-3-oxythionaphten     und 181,5 Teile     7-Chlorisatin    werden in 1800  Teilen Eisessig suspendiert und dann zum  Sieden erhitzt. Die Kondensation ist in kurzer    Zeit beendigt. Es wird filtriert, mit Alkohol  gewaschen und getrocknet.



      Additional patent to the main patent No. 118233. Process for the production of a new vat dye. It has been found that a new vat dye is obtained if 1 Mo1. 4.6-dimethyl-3-oxythionaphthene condensed with one mole of 7-chloroisatin. The new dye forms a red powder, dissolves in concentrated sulfuric acid with a violet-red color and, with hydrosulfite and caustic soda, gives a pale orange vat from which cotton is dyed really red-orange.



       Example: 178 parts of 4,6-dimethyl-3-oxythionaphthene and 181.5 parts of 7-chloroisatin are suspended in 1,800 parts of glacial acetic acid and then heated to the boil. The condensation ends in a short time. It is filtered, washed with alcohol and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Küpenfarbstoffes, dadurch gekennzeichnet, dass man 1 Mol. 4.6-Dimethyl-3-oxythio- naphten mit einem Molekül 7-Chlorisatin kondensiert. Der neue Farbstoff bildet ein rotes .Pulver, löst sich in konzentrierter Schwefelsäure mit violettroter Farbe und gibt mit Hydrosulfit und Natronlauge eine blassorange Küpe, aus welcher Baumwolle echt rotorange gefärbt wird. PATENT CLAIM: Process for the production of a new vat dye, characterized in that 1 mole of 4,6-dimethyl-3-oxythionnaphthene is condensed with one molecule of 7-chloroisatin. The new dye forms a red powder, dissolves in concentrated sulfuric acid with a violet-red color and, with hydrosulfite and caustic soda, gives a pale orange vat from which cotton is dyed really red-orange.
CH121499D 1925-10-31 1925-10-31 Process for the production of a new vat dye. CH121499A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH121499T 1925-10-31
CH118233T 1926-12-16

Publications (1)

Publication Number Publication Date
CH121499A true CH121499A (en) 1927-07-01

Family

ID=25708984

Family Applications (1)

Application Number Title Priority Date Filing Date
CH121499D CH121499A (en) 1925-10-31 1925-10-31 Process for the production of a new vat dye.

Country Status (1)

Country Link
CH (1) CH121499A (en)

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