CH140332A - Process for the preparation of an acidic wool dye. - Google Patents

Process for the preparation of an acidic wool dye.

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Publication number
CH140332A
CH140332A CH140332DA CH140332A CH 140332 A CH140332 A CH 140332A CH 140332D A CH140332D A CH 140332DA CH 140332 A CH140332 A CH 140332A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
amino
water
dissolves
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 CH140332A publication Critical patent/CH140332A/en

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Description

  

  Verfahren zur Darstellung eines sauren Wollfarbstoffes.    Gegenstand der vorliegenden Erfindung  ist ein Verfahren zur Darstellung eines sau  ren Wollfarbstoffes, den man erhält, wenn  man     1-Amino-4-bromanthrachinon    -     2-sulfo-          säure    mit     p-Amino-methylformanilid    in Ge  genwart von Wasser, eines     Alkalisalzes    der  Kohlensäure und eines Kupfersalzes umsetzt.  



  Der Farbstoff bildet ein schwarzblaues  Pulver. Er löst sich leicht in Wasser mit  blauer Farbe. In Schwefelsäure löst er sich       dunkelolivegrün;    unter Zugabe von Formal  dehyd jedoch klarer und heller     grünw2r-          dend.     



  <I>Beispiel:</I>  20 kg     1-Amino-4-bromanthrachinon-2-sul-          fosäure,    22 kg     Natriumbicarbonat,    10 kg     p-          Aminomethylformanilid,    1 kg Kupfersulfat  und 750 kg Wasser werden zu einer homo  genen Masse verrührt und 10 Stunden lang  auf<B>60</B> bis<B>70'</B> erwärmt, wobei die Konden  sation stattfindet. Sobald die Kondensation  beendet ist, verdünnt man mit 750 kg hei-         ssem    Wasser, filtriert vom Kupferschlamm  ab und salzt den Farbstoff aus der Lösung       mit    150 kg Kochsalz aus.  



  Der Farbstoff     wird    durch Lösen in hei  ssem Wasser und Ausfällen mit Kochsalz ge  reinigt.



  Process for the preparation of an acidic wool dye. The present invention relates to a process for the preparation of an acidic wool dye which is obtained when 1-amino-4-bromoanthraquinone - 2-sulfonic acid with p-amino-methylformanilide in the presence of water, an alkali metal salt of carbonic acid and of a copper salt.



  The dye forms a black-blue powder. It dissolves easily in water with a blue color. In sulfuric acid it dissolves dark olive green; with the addition of formaldehyde, however, it turns clearer and lighter green.



  <I> Example: </I> 20 kg of 1-amino-4-bromoanthraquinone-2-sulphonic acid, 22 kg of sodium bicarbonate, 10 kg of p-aminomethylformanilide, 1 kg of copper sulphate and 750 kg of water are stirred into a homogeneous mass and Heated to <B> 60 </B> to <B> 70 '</B> for 10 hours, during which time condensation takes place. As soon as the condensation has ended, it is diluted with 750 kg of hot water, the copper sludge is filtered off and the dye is salted out of the solution with 150 kg of sodium chloride.



  The dye is purified by dissolving it in hot water and precipitating it with common salt.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines sauren Wollfarbstoffes der Anthrachinonreihe, da durch gekennzeichnet, dass man 1-Amino-4- bromanthrachinon-2-sulfosäure mit p-Amino- formanilid, das im Formylaminorest eine Methylgruppe enthält, in Gegenwart von Wasser, eines Alkalisalzes der Kohlensäure und eines Kupfersalzes umsetzt. Der Farbstoff bildet ein schwarzblaues Pulver. Er löst sich leicht in Wasser mit blauer Farbe. PATENT CLAIM: A process for the preparation of an acidic wool dye of the anthraquinone series, characterized in that 1-amino-4-bromoanthraquinone-2-sulfonic acid with p-amino formanilide, which contains a methyl group in the formylamino radical, in the presence of water, an alkali salt of Carbonic acid and a copper salt. The dye forms a black-blue powder. It dissolves easily in water with a blue color. In Schwefelsäure löst er sich dunkelolivegrün; unter Zugabe von Formal dehyd jedoch klarer und heller grünwerdend. UNTERANSPRüCHE: 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Umsetzung bei einer Temperatur von 60 bis 80 be wirkt. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man als Alkalisalz der -Kohlensäure Natriumbicarbonat ver wendet. In sulfuric acid it dissolves dark olive green; with the addition of formaldehyde, however, it becomes clearer and lighter green. SUBClaims: 1. The method according to claim, characterized in that the reaction is effected at a temperature of 60 to 80 be. 2. The method according to claim, characterized in that sodium bicarbonate is used as the alkali salt of carbonic acid.
CH140332D 1927-08-03 1928-07-18 Process for the preparation of an acidic wool dye. CH140332A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE140332X 1927-08-03
CH132315T 1928-07-18

Publications (1)

Publication Number Publication Date
CH140332A true CH140332A (en) 1930-05-31

Family

ID=25711823

Family Applications (1)

Application Number Title Priority Date Filing Date
CH140332D CH140332A (en) 1927-08-03 1928-07-18 Process for the preparation of an acidic wool dye.

Country Status (1)

Country Link
CH (1) CH140332A (en)

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