CH152509A - Process for the preparation of a dye of the anthraquinone series. - Google Patents

Process for the preparation of a dye of the anthraquinone series.

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Publication number
CH152509A
CH152509A CH152509DA CH152509A CH 152509 A CH152509 A CH 152509A CH 152509D A CH152509D A CH 152509DA CH 152509 A CH152509 A CH 152509A
Authority
CH
Switzerland
Prior art keywords
dye
blue
acid
gray
preparation
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz Chemische Fabri Vormals
Original Assignee
Chem Fab Vormals Sandoz
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 Fab Vormals Sandoz filed Critical Chem Fab Vormals Sandoz
Publication of CH152509A publication Critical patent/CH152509A/en

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Description

  

  Verfahren zur Darstellung eines     Farbsto-ffes    der     Anthrachinonreihe.       Das vorliegende Verfahren betrifft die Dar  stellung eines grauen     Farbstoffes    der     Anthra-          chinonreihe,    darin bestehend,     dass    man ein  Salz der     1-Amino-2,4-dibromanthrachinon-5-          sulfosäure    mit     m-Toluylendiamin    in Gegen  wart von Kupferverbindungen und säurebin  denden Mitteln kondensiert und die erhaltene       Farbstoffbase    so lange mit     Sulfit    behandelt,

   bis  das     P-ständige.    Bromatom vollständig durch  eine     Suliogruppe    ersetzt wird.    <I>Beispiel:</I>  20 Teile     1-amino-2,4'dibromaiithrachinon-          5-sulfosa(ires    Kalium werden mit<B>300</B> Teilen  Wasser,<B>5</B> Teilen wasserfreiem     Natriumear-          bonat,   <B>3</B> Teilen kristallisiertem Kupfersulfat  und<B>10</B> Teilen     m-ToluyIendiamin    in einer in  differenten Atmosphäre auf<B>60-70 0</B>     C    so lange       erhitzt,bis    das Bromatom in     4-Stellung    vollstän  dig durch den     m-Toluylendiaminrest    ersetzt ist.

    Die entstandene Farbsto<B>ff</B>     sulfosäure    wird durch  Ansäuern gefällt und so lange mit     Kalium-          sulfit    erhitzt, bis das Bromatom in     2-Stellung       durch eine     Sulfogruppe    vollständig ersetzt  wird. Der entstandene Farbstoff wird durch       Aussalzen    aus der Lösung isoliert.  



  Er besitzt die Formel  
EMI0001.0029     
    und stellt in trockenem Zustande ein blau  schwarzes Pulver dar, welches in Wasser mit  blauer Farbe, in konzentrierter Schwefelsäure  mit     bräunlichroter    Farbe, welche auf Zusatz von  Borsäure schmutzig grünblau wird, löslich ist.  In kaltem     Äthylalkohol    ist er mit blauer Farbe  schwer löslich. Er färbt     ungebeizte    Wolle aus  saurem Bade in     bläulichgrauen    Tönen an,  welche durch     Chromieren    in Grau übergehen.



  Process for the preparation of a dye of the anthraquinone series. The present process relates to the presentation of a gray dye of the anthrachinone series, consisting in that a salt of 1-amino-2,4-dibromoanthraquinone-5-sulfonic acid is condensed with m-toluenediamine in the presence of copper compounds and acid-binding agents and the dye base obtained is treated with sulfite for so long

   until the P-permanent. The bromine atom is completely replaced by a sulio group. <I> Example: </I> 20 parts 1-amino-2,4'dibromaiithraquinone- 5-sulfosa (ires potassium are mixed with <B> 300 </B> parts of water, <B> 5 </B> parts of anhydrous Sodium carbonate, <B> 3 </B> parts of crystallized copper sulfate and <B> 10 </B> parts of m-toluene diamine in a different atmosphere heated to <B> 60-70 0 </B> C for so long until the bromine atom in the 4-position is completely replaced by the m-toluenediamine residue.

    The resulting dye sulfonic acid is precipitated by acidification and heated with potassium sulfite until the bromine atom in the 2-position is completely replaced by a sulfo group. The resulting dye is isolated from the solution by salting out.



  He owns the formula
EMI0001.0029
    and when dry it is a blue-black powder which is soluble in water with a blue color, in concentrated sulfuric acid with a brownish-red color, which becomes dirty green-blue on the addition of boric acid. In cold ethyl alcohol it is poorly soluble with a blue color. He dyes unstained wool from an acid bath in bluish-gray tones, which change to gray through chroming.

 

Claims (1)

PATENTANSPRUCII: Verfahren zur Darstellung eines grauen Farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, dass man ein Salz der 1-Amino- 2,4-dibi-omaiithrachitioti-5-sulfosäui,e mit m- Tolnylendiarnin in Gegenwart von Kupfer- verbindungen und säurebindenden Mitteln kon densiert und die erhaltene Farbstoffbaso so lange mit Sulfit behandelt, PATENT CLAIM: Process for the preparation of a gray dye of the anthraquinone series, characterized in that a salt of the 1-amino-2,4-dibi-omaiithrachitioti-5-sulfosäui, e with m-tolnylenediarnine in the presence of copper compounds and acid-binding agents is used condenses and the dye base obtained is treated with sulfite for so long bis das fl-ständige Bromatom vollständig durch eine Suliogruppe ersetzt ist. Der neue Farbstoff besitzt die. Formel EMI0002.0014 und stellt in trockenem Zustande ein blau schwarzes Pulver dar, welches in Wasser mit blauer Farbe, in konzentrierter Schwefelsäure mit bräunlichroter Farbe, welche auf Zusatz von Borsäure schmutzig grünblau wird, lös lich ist. In kaltern Äthylalkohol ist er schwer, init blauer Farbe, löslich. until the bromine atom in the fl position is completely replaced by a sulio group. The new dye has the. formula EMI0002.0014 and when dry it is a blue-black powder, which is soluble in water with a blue color, in concentrated sulfuric acid with a brownish-red color, which becomes dirty green-blue on the addition of boric acid. In cold ethyl alcohol it is difficult to dissolve, with a blue color. Er färbt ungebeizte Wolle aus saurem Bade in bläulichgrauen Tönen an, welche durch Chromieren. in Grau übergehen. He dyes unstained wool from an acid bath in bluish-gray tones, which by chroming. turn gray.
CH152509D 1929-10-04 1930-09-27 Process for the preparation of a dye of the anthraquinone series. CH152509A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE152509X 1929-10-04
CH149419T 1930-09-27

Publications (1)

Publication Number Publication Date
CH152509A true CH152509A (en) 1932-01-31

Family

ID=25715432

Family Applications (1)

Application Number Title Priority Date Filing Date
CH152509D CH152509A (en) 1929-10-04 1930-09-27 Process for the preparation of a dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH152509A (en)

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