CH122925A - Process for the preparation of a nitrogenous vat dye of the benzanthrone series. - Google Patents

Process for the preparation of a nitrogenous vat dye of the benzanthrone series.

Info

Publication number
CH122925A
CH122925A CH122925DA CH122925A CH 122925 A CH122925 A CH 122925A CH 122925D A CH122925D A CH 122925DA CH 122925 A CH122925 A CH 122925A
Authority
CH
Switzerland
Prior art keywords
blue
preparation
sulfide
benzanthronyl
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 CH122925A publication Critical patent/CH122925A/en

Links

Landscapes

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

Description

  

  Verfahren zur Darstellung eines stickstoffhaltigen     Küpenfarbstoffes     der     Benzanthronreihe.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines     Küpenfarb-          stoffes    durch Behandlung von     Benzoyl-amino-          Bz    1, Bz     1'-benzanthronylsulfid    mit einem al  kalischen Kondensationsmittel,. insbesondere  alkoholischem Alkali.

      <I>Beispiel:</I>  10 Gewichtsteile des Kondensationspro  duktes aus     Konobrom-Bz    1, Bz     1'-benzanthro-          nylsulfid,    erhalten durch     Bromierung    von Bz 1,  Bz     1'-benzanthronylsulfid    in konzentrierter  Schwefelsäure, und     Benzamid    werden mit  40-50 Gewichtsteilen     Ätzkali    und 30 Ge  wichtsteilen     Äthylalkoholbei        150 verschmolzen     bis die     Farbstoffbildung    beendet ist. Der wie  üblich ausgearbeitete Farbstoff ist ein blau  schwarzes Pulver, das sich in konzentrierter  Schwefelsäure mit grüner Farbe löst.

   Die  Lösungsfarbe in siedendem Nitrobenzol ist  grünblau mit braunroter Fluoreszenz. Der  Farbstoff kann nach den üblichen Methoden,    zum Beispiel durch     Umlösen    und fraktionierte  Fällung aus konzentrierter Schwefelsäure ge  reinigt werden und färbt aus     violettblauer          Hydrosulfitküpe    Baumwolle in blauvioletten  Tönen, die beim Behandeln mit verdünnter       Hypochloritlösung    in ein Marineblau über  gehen.



  Process for the preparation of a nitrogenous vat dye of the benzanthrone series. The subject of this additional patent is a process for the preparation of a vat dye by treating benzoylamino-Bz 1, Bz 1'-benzanthronyl sulfide with an alkaline condensation agent. especially alcoholic alkali.

      <I> Example: </I> 10 parts by weight of the condensation product from Konobrom-Bz 1, Bz 1'-benzanthanyl sulfide, obtained by bromination of Bz 1, Bz 1'-benzanthronyl sulfide in concentrated sulfuric acid, and benzamide are mixed with 40- 50 parts by weight of caustic potash and 30 parts by weight of ethyl alcohol melted at 150 until the dye formation is complete. The dye, worked out as usual, is a blue-black powder that dissolves in concentrated sulfuric acid with a green color.

   The solution color in boiling nitrobenzene is green-blue with brown-red fluorescence. The dye can be purified by the usual methods, for example by redissolving and fractional precipitation from concentrated sulfuric acid and dyes cotton in blue-violet shades from a violet-blue hydrosulfite vat, which turn into a navy blue when treated with dilute hypochlorite solution.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines stickstoff haltigen Küpenfarbstoffes der Benzarithron- reihe, dadurch gekennzeichnet, dass man Benzoyl-amino-Bz 1, Bz 1'-benzanthronylsulfid, erhalten durch Bromierung von Bz 1. Bz 1' benzanthronylsulfid in konzentrierter Schwefel säure und Kondensation des entstandenen Brom -Bz 1; Bz 1'-benzanthronylsulfids mit Benzamid, mit einem alkalischen Kondensa tionsmittel behandelt. PATENT CLAIM: A process for the preparation of a nitrogen-containing vat dye of the benzarithron series, characterized in that benzoylamino-Bz 1, Bz 1'-benzanthronyl sulfide, obtained by bromination of Bz 1. Bz 1 'benzanthronyl sulfide in concentrated sulfuric acid and condensation of the bromine -Bz 1 formed; Bz 1'-benzanthronyl sulfide with benzamide treated with an alkaline condensation agent. Der so erhaltene Farb stoff stellt ein blauschwarzes Pulver dar, das sich in konzentrierter Schwefelsäure mit grüner Farbe, in siedendem Nitrobenzol mit grün- blauer Farbe und braunroter Fluoreszenz löst. Er färbt aus violettblauer Hydrosulfithüpe Baumwolle in blauvioletten Tönen, die beim Behandeln mit Hypochlorit in ein Marine blau übergehen. The dye thus obtained is a blue-black powder that dissolves in concentrated sulfuric acid with a green color, in boiling nitrobenzene with a green-blue color and brown-red fluorescence. It dyes cotton from violet-blue hydrosulphite husks in blue-violet tones, which turn into a navy blue when treated with hypochlorite.
CH122925D 1925-03-27 1926-03-25 Process for the preparation of a nitrogenous vat dye of the benzanthrone series. CH122925A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE122925X 1925-03-27
CH120525T 1929-08-01

Publications (1)

Publication Number Publication Date
CH122925A true CH122925A (en) 1927-10-17

Family

ID=25709487

Family Applications (1)

Application Number Title Priority Date Filing Date
CH122925D CH122925A (en) 1925-03-27 1926-03-25 Process for the preparation of a nitrogenous vat dye of the benzanthrone series.

Country Status (1)

Country Link
CH (1) CH122925A (en)

Similar Documents

Publication Publication Date Title
CH122925A (en) Process for the preparation of a nitrogenous vat dye of the benzanthrone series.
DE622173C (en) Process for the production of Kuepen dyes
DE486021C (en) Process for the preparation of Kuepen dyes
DE497578C (en) Process for the preparation of Kuepen dyes of the benzanthrone series
CH120717A (en) Process for the preparation of isodibenzanthrone.
DE591628C (en) Process for the production of azo dyes of the stilbene series
CH120716A (en) Process for the preparation of isodibenzanthrone.
DE628725C (en) Process for the production of Kuepen dyes
DE536294C (en) Process for the preparation of Kuepen dyes of the anthraquinone series
DE518230C (en) Process for the preparation of Kuepen dyes of the N-dihydro-1, 2, 2, 1-anthraquinonazine series
AT55728B (en) Process for the preparation of sulfur-containing vat dyes of the anthracene series.
DE547707C (en) Process for the preparation of Kuepen dyes of the N-dihydroanthraquinonazine series
DE441586C (en) Process for the preparation of Kuepen dyes
DE546228C (en) Process for the production of nitrogen-containing Kuepen dyes
DE513046C (en) Process for the preparation of Kuepen dyes of the 1,2-benzanthraquinone series
DE525110C (en) Process for the preparation of Kuepen dyes of the N-dihydro-1íñ2íñ2&#39;íñ1&#39;-anthraquinonazine series
DE544917C (en) Process for the representation of decoctions of the pyranthrone
DE479027C (en) Process for the preparation of brown Kuepen colors
CH122267A (en) Process for the preparation of a vat dye of the benzanthrone series.
AT99924B (en) Process for the production of indigoid dyes.
CH120718A (en) Process for the preparation of isodibenzanthrone.
CH122071A (en) Process for the preparation of a nitrogenous vat dye.
CH122266A (en) Process for the preparation of a vat dye of the benzanthrone series.
CH122268A (en) Process for the preparation of a vat dye of the benzanthrone series.
CH122924A (en) Process for the preparation of a nitrogenous vat dye of the benzanthrone series.