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CH190340A - Process for the production of an indigoid dye. - Google Patents

Process for the production of an indigoid dye.

Info

Publication number
CH190340A
CH190340A CH190340DA CH190340A CH 190340 A CH190340 A CH 190340A CH 190340D A CH190340D A CH 190340DA CH 190340 A CH190340 A CH 190340A
Authority
CH
Switzerland
Prior art keywords
bromo
chloro
dye
production
methoxyisatin
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 CH190340A publication Critical patent/CH190340A/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
    • C09B7/08—Other indole-indigos

Landscapes

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

Description

  

  Zusatzpatent zum     lIauptpatein.t        Nr.   <B>186851.</B>    Verfahren zur Herstellung eines     indigoiden    Farbstoffes.    Es wurde gefunden,     dass    man einen     indi-          Croiden    Farbstoff herstellen kann, wenn man  t>  die     reaktionsfähigen        a-Derivate    eines Ge  misches von<B>8090</B>     4-Chlor-5-brom-7-methoxy-          isatin    und     '2090'        4-Chlor-7-methoxyisatin    mit       4-Brom-l-oxynaphthalin    kondensiert.  



  Der erhaltene Farbstoff stellt ein blaues  Pulver dar, das sich in konzentrierter Schwe  felsäure mit grüner Farbe löst und beim Be  drucken der Baumwolle blaue Töne liefert,  die sieh durch Reinheit, sowie durch sehr  gute Wasch-, Chlor- und Lichtechtheit aus  zeichnen.  



  <I>Beispiel:</I>  <B>80</B> Teile     4-Chlor-5-brom-7-methoxvisatin          und    20 Teile     4-Chlor-7-methoxyisatin    werden  miteinander gemischt und zur Überführung  in die entsprechenden     Isatin-a-chloride    mit  <B>90</B> Teilen     Phosphorpentachlorid    und<B>1500</B>  Teilen     Cblorbenzol    erwärmt. Die erhaltene  Lösung wird bei etwa<B>50 '</B> mit einer 45 bis  <B>50 '</B> warmen Lösung von<B>90</B> Teilen     4-Brom-          1-oxynaphthalin    in 2000 Teilen Chlorbenzol    vereinigt, wobei sich der Farbstoff als blauer  Kristallbrei ausscheidet. Nach dem Erkalten  wird filtriert, mit Chlorbenzol und mit<B>Al-</B>  kohol gewaschen.



  Additional patent to the main patent no. <B> 186851. </B> Process for the production of an indigoid dye. It has been found that an indi-Croiden dye can be produced if one t> the reactive α-derivatives of a mixture of <B> 8090 </B> 4-chloro-5-bromo-7-methoxy-isatin and ' 2090 '4-chloro-7-methoxyisatin condensed with 4-bromo-1-oxynaphthalene.



  The dye obtained is a blue powder that dissolves in concentrated sulfuric acid with a green color and, when printing the cotton, delivers blue tones that are characterized by purity and very good fastness to washing, chlorine and light.



  <I> Example: </I> <B> 80 </B> parts of 4-chloro-5-bromo-7-methoxvisatin and 20 parts of 4-chloro-7-methoxyisatin are mixed with one another and converted into the corresponding isatin a-chloride with <B> 90 </B> parts of phosphorus pentachloride and <B> 1500 </B> parts of chlorobenzene. The solution obtained is mixed at about <B> 50 '</B> with a 45 to <B> 50' </B> warm solution of <B> 90 </B> parts of 4-bromo-1-oxynaphthalene in 2000 parts Chlorobenzene combined, the dye separating out as a blue crystal pulp. After cooling, it is filtered, washed with chlorobenzene and with <B> alcohol </B> alcohol.

Claims (1)

PATENTANSPRUCII: Verfahren zur Rerstellung eines indi- goiden Farbstoffes, dadurch gekennzeichnet, dass man die reaktionsfähigen a-Derivate eines Gemisches von 80,% 4-Clilor-5-brom-7- methoxyisatin und 201wo 4-Chlor-7-methoxy- isatin mit 4-Brom-l-oxynapht-halin konden siert. PATENT CLAIM: Process for the preparation of an indigoid dye, characterized in that the reactive α-derivatives of a mixture of 80% 4-chloro-5-bromo-7-methoxyisatin and 4-chloro-7-methoxyisatin are used 4-bromo-l-oxynaphthalene condensed. Der erhaltene Farbstoff stellt ein blaues Pulver dar, das sieh in konzentrierter Scliwe- felsäure mit grüner Farbe löst und beim Be drucken der Baumwolle blaue Töne liefert, die sich durch Reinheit, sowie durch sehr gute Wasch-, Chlor- und Lichtechtheit aus zeichnen. The dye obtained is a blue powder which dissolves in concentrated sulphuric acid with a green color and, when printing the cotton, delivers blue tones which are distinguished by their purity and very good fastness to washing, chlorine and light.
CH190340D 1936-02-18 1936-02-18 Process for the production of an indigoid dye. CH190340A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH186851T 1936-02-18
CH190340T 1936-02-18

Publications (1)

Publication Number Publication Date
CH190340A true CH190340A (en) 1937-04-15

Family

ID=25721456

Family Applications (1)

Application Number Title Priority Date Filing Date
CH190340D CH190340A (en) 1936-02-18 1936-02-18 Process for the production of an indigoid dye.

Country Status (1)

Country Link
CH (1) CH190340A (en)

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