CH121500A - Process for the production of a new vat dye. - Google Patents

Process for the production of a new vat dye.

Info

Publication number
CH121500A
CH121500A CH121500DA CH121500A CH 121500 A CH121500 A CH 121500A CH 121500D A CH121500D A CH 121500DA CH 121500 A CH121500 A CH 121500A
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 CH121500A publication Critical patent/CH121500A/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.   <B>118233.</B>    Verfahren zur     HersteUung    eines neuen     Nüpenfarbstoffes.       Es wurde     gef        unden,        dass    man einen neuen       Küpenfarbstoff    erhält, wenn man<B>1.</B>     Mol.        4.6-          Dimethyl-3-oxythionaphten    mit einem Molekül       5.7-Dibromisatin    kondensiert.

   Der neue Farb  stoff bildet ein rotes Pulver, löst sich in kon  zentrierter Schwefelsäure mit rotbrauner  Farbe und gibt mit     Hydrosulfit    und Natron  lauge eine orange     Küpe,    aus welcher Baum  wolle echt     scharlach    gefärbt wird.  



  <I>Beispiel<B>:</B></I>  <B>178</B> Teile     4.6-Dimethyl-3-oxythionaphten     und<B>305</B> Teile     5.7-Dibromisatin    werden in  <B>1800</B> 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 main patent no. <B> 118233. </B> Process for the production of a new pimple dye. It was found that a new vat dye is obtained if <B> 1. </B> mol. 4.6-dimethyl-3-oxythionaphthene is condensed with one molecule of 5.7-dibromoisatin.

   The new dye forms a red powder, dissolves in concentrated sulfuric acid with a reddish brown color and, with hydrosulfite and sodium hydroxide solution, gives an orange vat from which cotton is dyed really scarlet.



  <I>Example<B>:</B> </I> <B> 178 </B> parts of 4,6-dimethyl-3-oxythionaphten and <B> 305 </B> parts of 5.7-dibromoisatin are in <B> 1800 parts of glacial acetic acid suspended and then heated to boiling. 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<B>1</B> Mol. 4.6-Dimethyl-3-oxythio- naphten mit einem Molekül. 5.7-Dibrom- isatin kondensiert. Der neue Farbstoff bildet ein rotes Pulver, löst sich in konzentrierter Schwefelsäure mit rotbrauner Farbe und gibt mit Ilydrosulfit und Natronlauge eine orange Küpe,- aus welcher Baumwolle echt scharlach gefärbt wird. PATENT CLAIM * Process for the production of a new vat dye, characterized in that <B> 1 </B> mol. 4,6-dimethyl-3-oxythio- naphthene with one molecule. 5.7-dibromoisatin condensed. The new dye forms a red powder, dissolves in concentrated sulfuric acid with a red-brown color and, with Ilydrosulfite and caustic soda, gives an orange vat - from which cotton is dyed really scarlet.
CH121500D 1925-10-31 1925-10-31 Process for the production of a new vat dye. CH121500A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH121500T 1925-10-31
CH118233T 1926-12-16

Publications (1)

Publication Number Publication Date
CH121500A true CH121500A (en) 1927-07-01

Family

ID=25708985

Family Applications (1)

Application Number Title Priority Date Filing Date
CH121500D CH121500A (en) 1925-10-31 1925-10-31 Process for the production of a new vat dye.

Country Status (1)

Country Link
CH (1) CH121500A (en)

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