CH147044A - Process for the preparation of a vat dye. - Google Patents

Process for the preparation of a vat dye.

Info

Publication number
CH147044A
CH147044A CH147044DA CH147044A CH 147044 A CH147044 A CH 147044A CH 147044D A CH147044D A CH 147044DA CH 147044 A CH147044 A CH 147044A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
blue
vat
vat dye
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH147044A publication Critical patent/CH147044A/en

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung eines     Nüpenfar        bstoffes.       Im Hauptpatent ist ein Verfahren zur  Darstellung eines neuen     Küpenfarbstoffes    be  schrieben, wonach man     Pyrazolanthron    mit       1-Amino-2-halogerianthrachinonen    in     Cregen-          wart    von alkalischen Kondensationsmitteln  in der Wärme behandelt.  



  Es wurde nun gefunden, dass man einen  ähnlich wertvollen     Küpenfarbstoff    erhalten  kann, wenn man ein in     2-Stellung    . durch  Halogen substituiertes     Pyrazolanthron    mit       1-Amino-4-oxyani,hrachinon    in Gegenwart  eines alkalischen Kondensationsmittels in der  Wärme behandelt.  



  Der erhaltene Farbstoff färbt Baumwolle  aus blauer     Küpe    in blaugrünen Tönen und  löst sich in konzentrierter Schwefelsäure mit  grünblauer Farbe.    <I>Beispiel:</I>  Man erhitzt 18 Teile     2-Brompyrazolanthron,     29 Teile     1-Amino-4-oxyanthrachinon,    10,6  Teile Pottasche, 1,2 Teile Kupferpulver und    180 Teile     Nitrobenzol    so lange unter Rück  fluss und Rühren zum Sieden, bis die     Farb-          stoffbildung    nicht mehr zunimmt.

   Hierauf  lässt man erkalten und trennt den zum  grössten Teil bereits ausgeschiedenen Farb  stoff in bekannter Weise vom Lösungsmittel  und den anorganischen Bestandteilen des  Reaktionsgemisches ab.     Man    kann zum Bei  spiel zunächst zum Abtrennen vom     Nitro-          benzol    mit Alkohol verdünnen, absaugen und  mit Alkohol und Wasser waschen.

   Zur Ab  trennung vom überschüssigen     1-Amino-4-oxy-          anthrachinon    kann man den rohen     Farbstoff     zum Beispiel mit 1000 Teilen     Schwefelsäure          von        70%        H2S04        Gehalt        ausziehen.        Um        den     Farbstoff in reine Form zu bringen, kristalli  siert man ihn zweckmässig aus kochendem       Trichlorbenzol    um.



  Method for the representation of a Nüpenfar bstoffes. In the main patent, a process for the preparation of a new vat dye is described, after which pyrazolanthrone is treated with 1-amino-2-halogerianthraquinones in Cregen wart of alkaline condensing agents in the heat.



  It has now been found that a similarly valuable vat dye can be obtained if one is in the 2-position. halogen-substituted pyrazolanthrone treated with 1-amino-4-oxyani, hrachinon in the presence of an alkaline condensing agent in the heat.



  The dye obtained dyes cotton from a blue vat in blue-green tones and dissolves in concentrated sulfuric acid with a green-blue color. <I> Example: </I> 18 parts of 2-bromopyrazolanthrone, 29 parts of 1-amino-4-oxyanthraquinone, 10.6 parts of potash, 1.2 parts of copper powder and 180 parts of nitrobenzene are heated under reflux and stirring for as long Boil until the formation of color no longer increases.

   It is then allowed to cool and the dye, which has for the most part already separated out, is separated from the solvent and the inorganic constituents of the reaction mixture in a known manner. For example, to separate the nitrobenzene, it can first be diluted with alcohol, filtered off with suction and washed with alcohol and water.

   To separate from the excess 1-amino-4-oxyanthraquinone, the crude dye can be extracted, for example, with 1000 parts of sulfuric acid with a content of 70% H2S04. In order to bring the dye into pure form, it is expediently crystallized from boiling trichlorobenzene.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass maii ein in 2-Stellung durch Halogen substituiertes Pyrazolanthron mit 1-gmino-4-oxyanthra- chinon in Gegenwart eines alkalischen Kon densationsmittels in der Wärme behandelt. Der erhaltene Farbstoff färbt Baumwolle aua blauer Küpe in blaugrünen Tönen und löst sich in konzentrierter Schwefelsäure mit grünblauer Farbe. PATENT CLAIM: Process for the preparation of a vat dye, characterized in that a pyrazolanthrone substituted in the 2-position by halogen is treated with 1-gmino-4-oxyanthraquinone in the presence of an alkaline condensation agent under heat. The dye obtained dyes cotton on a blue vat in blue-green tones and dissolves in concentrated sulfuric acid with a green-blue color.
CH147044D 1929-01-10 1929-11-20 Process for the preparation of a vat dye. CH147044A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE147044X 1929-01-10
CH143401T 1929-06-11

Publications (1)

Publication Number Publication Date
CH147044A true CH147044A (en) 1931-05-15

Family

ID=25714283

Family Applications (1)

Application Number Title Priority Date Filing Date
CH147044D CH147044A (en) 1929-01-10 1929-11-20 Process for the preparation of a vat dye.

Country Status (1)

Country Link
CH (1) CH147044A (en)

Similar Documents

Publication Publication Date Title
CH147044A (en) Process for the preparation of a vat dye.
DE229708C (en)
CH147045A (en) Process for the preparation of a vat dye.
CH147043A (en) Process for the preparation of a vat dye.
DE475342C (en) Process for the preparation of Kuepen dyes
CH144868A (en) Process for the preparation of a nitrogenous vat dye.
DE568034C (en) Process for the production of condensation products
DE656489C (en) Process for the preparation of Py-C-alkyl-1- (N) -2-pyrazolone anthraquinones
CH131509A (en) Process for the preparation of a condensation product presumably consisting of 1.B-oxyäthylamino-5.B-oxyäthylaminoanthraquinone.
CH149613A (en) Process for the preparation of a nitrogenous vat dye.
CH124353A (en) Process for the preparation of a vat dye.
CH183384A (en) Process for the production of an anthraquinone derivative.
CH189874A (en) Process for the production of a new condensation product.
CH198150A (en) Process for the production of a vat dye.
CH176633A (en) Process for the preparation of an aminodinaphthylene oxide.
CH172369A (en) Process for the preparation of a nitrogen-containing condensation product.
CH178821A (en) Process for the production of an anthraquinone derivative.
CH137470A (en) Process for the preparation of a vat dye.
CH191447A (en) Process for the production of a new condensation product.
CH188889A (en) Process for the production of a new condensation product.
CH116588A (en) Process for the preparation of a new vat dye of the perylene series.
CH175911A (en) Process for the preparation of a nitrogen-containing condensation product.
CH153400A (en) Process for the production of a wool dye of the anthraquinone series.
CH137116A (en) Process for the preparation of a nitrogenous vat dye of the benzanthrone series.
CH191442A (en) Process for the production of a new condensation product.