CH135114A - Process for the preparation of an orange-colored vat dye of the anthanthrone series. - Google Patents

Process for the preparation of an orange-colored vat dye of the anthanthrone series.

Info

Publication number
CH135114A
CH135114A CH135114DA CH135114A CH 135114 A CH135114 A CH 135114A CH 135114D A CH135114D A CH 135114DA CH 135114 A CH135114 A CH 135114A
Authority
CH
Switzerland
Prior art keywords
orange
anthanthrone
vat dye
preparation
colored
Prior art date
Application number
Other languages
German (de)
Inventor
Leopold Cassella Co Ge Haftung
Original Assignee
Cassella Leopold & Co Gmbh
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
Priority claimed from DEC37412D external-priority patent/DE458598C/en
Application filed by Cassella Leopold & Co Gmbh filed Critical Cassella Leopold & Co Gmbh
Publication of CH135114A publication Critical patent/CH135114A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Darstellung eines orange färbenden     Nüpenfarbstoffes    der       Anthanthronreihe.       Es wurde gefunden, dass man den  im Zusatzpatent Nr.<B>130618</B> beschriebenen  rötlichen orange färbenden     Küpenfarbstoff     der     Anthanthronreihe    auch erhält, wenn man  Brom ohne Zusatz eines Verdünnungsmittels  auf     Anthanthron    bei Temperaturen unter  <B>1000</B> einwirken lässt.  



  Die Reaktion kann durch Zusatz eines  geeigneten Katalysators, wie Jod, beschleu  nigt werden.  



  <I>Beispiel:</I>  1 Teil fein gepulvertes     Anthanthron    wird  mit etwa 10 Teilen Brom versetzt und die  Mischung einige Stunden bei gewöhnlicher  Temperatur gerührt. Dann wird der Über  schuss an Brom entfernt, zum Beispiel durch  Destillation im Vakuum, von etwa anhaftenden  Spuren Brom wird das Produkt in üblicher  Weise befreit,     zum    Beispiel durch Erwärmen    mit     Bisulfit    oder verdünnter Soda. Der so  erhaltene     Farbstoff    entspricht der wahr  scheinlichen Formel  
EMI0001.0010     
    Der so erhaltene     Küpenfarbstoff    stellt ein  rötliches Pulver dar, das sich in konzentrier  ter Schwefelsäure leuchtend grün löst.

   Aus  der violetten     Hydrosulfitküpe    färbt er pflanz  liche Faser in gleichen Tönen an, die beim  Verhängen in ein leuchtendes Rotorange von  ausgezeichneter Echtheit, insbesondere gegen  Licht, übergehen.



  Process for the preparation of an orange colored nub dye of the anthanthrone series. It has been found that the reddish orange vat dye of the anthanthrone series described in additional patent no. 130618 is also obtained if bromine is acted on anthanthrone at temperatures below 1000 without the addition of a diluent leaves.



  The reaction can be accelerated by adding a suitable catalyst such as iodine.



  <I> Example: </I> 1 part of finely powdered anthanthrone is mixed with about 10 parts of bromine and the mixture is stirred for a few hours at normal temperature. The excess of bromine is then removed, for example by distillation in vacuo, the product is freed from any traces of bromine adhering to it in the usual way, for example by heating with bisulfite or dilute soda. The dye thus obtained corresponds to the probable formula
EMI0001.0010
    The vat dye obtained in this way is a reddish powder that dissolves in concentrated sulfuric acid in a bright green color.

   From the violet hydrosulphite vat, it stains vegetable fibers in the same tones, which, when hung, turn into a bright red-orange of excellent fastness, especially to light.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines orange färbenden Küpenfarbstoffes der Anthanthron- reihe, dadurch gekennzeichnet, dass man Brom ohne Zusatz eines Verdünnungsmittels auf Anthanthron bei Temperaturen unter 1001' einwirken lässt. Der so erhaltene Küpenfarbstoff stellt ein rötliches Pulver dar, das sich in konzentrier ter Schwefelsäure leuchtend grün löst. Aus der violetten Hydrosulfitküpe färbt er pflanz liche Faser in gleichen Tönen an, die beim Verhängen in ein leuchtendes Rotorange von ausgezeichneter Echtheit, insbesondere gegen Licht, übergehen. PATENT CLAIM: Process for the preparation of an orange-colored vat dye of the anthanthrone series, characterized in that bromine is allowed to act on anthanthrone at temperatures below 1001 'without adding a diluent. The vat dye obtained in this way is a reddish powder that dissolves in concentrated sulfuric acid in a bright green color. From the violet hydrosulphite vat, it stains vegetable fibers in the same tones, which, when hung, turn into a bright red-orange of excellent fastness, especially to light. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man der Reaktionsmasse einen Katalysator zusetzt. SUBCLAIM: Process according to claim, characterized in that a catalyst is added to the reaction mass.
CH135114D 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series. CH135114A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEC37412D DE458598C (en) 1925-11-07 1925-11-07 Process for the production of orange dyes
CH124528T 1926-11-02

Publications (1)

Publication Number Publication Date
CH135114A true CH135114A (en) 1929-08-31

Family

ID=29216709

Family Applications (7)

Application Number Title Priority Date Filing Date
CH130618D CH130618A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH130617D CH130617A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH135114D CH135114A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH131505D CH131505A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH124528D CH124528A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH147042D CH147042A (en) 1925-11-07 1929-11-25 Process for the production of an orange vat dye.
CH147699D CH147699A (en) 1925-11-07 1929-12-02 Process for the production of an orange vat dye.

Family Applications Before (2)

Application Number Title Priority Date Filing Date
CH130618D CH130618A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH130617D CH130617A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.

Family Applications After (4)

Application Number Title Priority Date Filing Date
CH131505D CH131505A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH124528D CH124528A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH147042D CH147042A (en) 1925-11-07 1929-11-25 Process for the production of an orange vat dye.
CH147699D CH147699A (en) 1925-11-07 1929-12-02 Process for the production of an orange vat dye.

Country Status (1)

Country Link
CH (7) CH130618A (en)

Also Published As

Publication number Publication date
CH147699A (en) 1931-06-15
CH124528A (en) 1928-03-16
CH131505A (en) 1929-02-15
CH130618A (en) 1928-12-15
CH147042A (en) 1931-05-15
CH130617A (en) 1928-12-15

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