CH266373A - Process for the production of a new dye of the anthraquinone series. - Google Patents

Process for the production of a new dye of the anthraquinone series.

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Publication number
CH266373A
CH266373A CH266373DA CH266373A CH 266373 A CH266373 A CH 266373A CH 266373D A CH266373D A CH 266373DA CH 266373 A CH266373 A CH 266373A
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CH
Switzerland
Prior art keywords
production
dye
anthraquinone series
amino
water
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Application number
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German (de)
Inventor
Ag Sandoz
Original Assignee
Ag 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.)
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Publication date
Application filed by Ag Sandoz filed Critical Ag Sandoz
Publication of CH266373A publication Critical patent/CH266373A/en

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Description

  

  Verfahren zur Herstellung eines neuen Farbstoffes der     Anthrachinonreihe.       In den deutschen Patentschriften Nr. 595472  und 602959 sind     walkeclite    Wollfarbstoffe be  schrieben, die durch Kondensation von     An-          thrachinonderivaten,    die in 1- und     4-Stellung     austauschbare     Substituenten    tragen, mit mehr  kernigen aromatischen Aminen entstehen.

      Es wurde nun gefunden, dass besonders  wertvolle neue     Wollfarbstoffe    entstehen, wenn  man     Anthrachinonderivate,    die in 1- und     4-          Stellung        austauschbare        Substituenten    tragen  und die ausserdem in 6-     oderjund        7-Stellung     mit Halogen substituiert sind, mit mehrkerni  gen aromatischen Aminen kondensiert und die  erhaltenen Kondensationsprodukte sulfoniert.

    Zur Kondensation geeignete     Anthrachinonver-          bindungen    sind zum Beispiel     6-Clilorchiniza-          rin,        6,7-Diehloreliinizarin,        6-Bromehinizarin,          6,7-Dibromchinizarin,        6,7-Bromchlorcliiniza-          rin,        6-Clilor-1,4-oxyaniinoanthrachinon,    6,7  Dichlor-1,4-oxyaminoanthrachinon,     6-Chlor-          1,4-diaminoanthrachinon,        6,7-Dichlor-1,4-di-          aniinoanthrachinon,        6-Brom-1,

  4-diaminoan-          thrachinon    bzw. die     Leukoverbindungen    die  ser Körper. Ferner     1,4,6-Trihalogen-    und 1,4,       6,7-Tetralialogenantliracliinon.       Als mehrkernige aromatische     Amino    wer  den verwendet z.

   B. a- und     ss-Naphthy    lamme,  1- und     2-Amino-5,6,7,8-tetrahydronaphthalin,     2 -     Amino    -1,2,3,4 -     tetrahy        dronaphthalin,    1  Amino-4-cyclohexylbenzol, die     Aminodiphe-          nyle,    die     Aminodiphenyläther,    die     Aminodi-          phenylmethane    usw.    Die neuen Farbstoffe zeichnen sich von  den bisher bekannten durch hervorragend  schöne Abendfarbe aus.  



  Das vorliegende Patent betrifft ein Ver  fahren zur Herstellung     eines    wasserlöslichen  Farbstoffes, welches dadurch gekennzeichnet  ist, dass man ein Gemisch von     Leuko-6-chlor-          chinizarin    und     6-Chlorchinizarin    mit     2-Amino-          5,6,7,8-tetrahydronaphtlialin    kondensiert und  die erhaltene Base sulfoniert.  



  <I>Beispiel:</I>  20 Teile     Leuko-6-clilorchinizarin,    30 Teile       6-Chlorchinizarin,    20 Teile Borsäure und 300  Teile     2-Amino-5,6,7,8-tetrahydronaphthalin     werden so lange bei 100 bis 1500 gerührt, bis  die Kondensation beendet ist.. Falls nötig, wird  die noch vorhandene     Leukobase    mit einem  Luftstrom, eventuell bei Gegenwart von     Pi-          per        idin    und     Cu-    Acetat, oxydiert. Durch Ver  dünnen mit 300 Teilen Alkohol wird das Kon  densationsprodukt gefällt, filtriert, mit Alko  hol und Wasser gewaschen.

   Nach dem     Umkri-          stallisieren    aus organischen Lösungsmitteln  erhält man das     1,4-Di-(2-amino-5,6,7,8-tetra-          hydronaphthalin)-6-clilorantlirachinon    rein in  dunklen Kristallen, die sich in organischen  Lösungsmitteln grün lösen. Die Farbbase wird  durch Behandeln mit sulfonierenden Mitteln,  beispielsweise 5 bis     10ö        Oleum,    bei 15 bis 450  in einen wasserlöslichen Farbstoff überge  führt, der Wolle in sehr echten grünen Tönen       anfärbt..         Der Farbstoff ist ein dunkelgrünes Pulver,  das sieh in Wasser mit grüner, in Schwefel-    säure mit blauer Farbe löst. Er besitzt die  Formel  
EMI0002.0001     




  Process for the production of a new dye of the anthraquinone series. In German patents Nos. 595472 and 602959, walkeclite wool dyes are described which are formed by condensation of anthrachinone derivatives, which carry substituents in the 1- and 4-positions, with more nuclear aromatic amines.

      It has now been found that particularly valuable new wool dyestuffs are formed when anthraquinone derivatives which have interchangeable substituents in the 1- and 4-position and which are also substituted in the 6- or 7-position with halogen are condensed with polynuclear aromatic amines and the obtained condensation products sulfonated.

    Anthraquinone compounds suitable for condensation are, for example, 6-clilorquinizarine, 6,7-diehloreliinizarine, 6-bromoquinizarine, 6,7-dibromoquinizarine, 6,7-bromochloroclinizarine, 6-clilor-1,4-oxyaniinoanthraquinone, 6 , 7 dichloro-1,4-oxyaminoanthraquinone, 6-chloro-1,4-diaminoanthraquinone, 6,7-dichloro-1,4-di-aniinoanthraquinone, 6-bromo-1,

  4-diaminoanthrachinone or the leuco compounds of these bodies. Also 1,4,6-trihalogeno- and 1,4,6,7-tetralialogenantliracliinon. As a polynuclear aromatic amino who used the z.

   B. a- and ss-naphthylamines, 1- and 2-amino-5,6,7,8-tetrahydronaphthalene, 2 - amino -1,2,3,4 - tetrahydronaphthalene, 1 amino-4-cyclohexylbenzene, the Aminodiphenyls, the aminodiphenyl ethers, the aminodiphenyl methanes, etc. The new dyes are distinguished from the previously known ones by their extremely beautiful evening color.



  The present patent relates to a process for the production of a water-soluble dye, which is characterized in that a mixture of leuco-6-chloroquinizarin and 6-chloroquinizarin is condensed with 2-amino-5,6,7,8-tetrahydronaphthalene and the base obtained is sulfonated.



  <I> Example: </I> 20 parts of leuco-6-chloroquinizarine, 30 parts of 6-chloroquinizarine, 20 parts of boric acid and 300 parts of 2-amino-5,6,7,8-tetrahydronaphthalene are stirred at 100 to 1500 for so long until the condensation has ended .. If necessary, the leuco base still present is oxidized with a stream of air, possibly in the presence of piperidine and copper acetate. The condensation product is precipitated by thinning with 300 parts of alcohol, filtered, washed with alcohol and water.

   After recrystallization from organic solvents, 1,4-di- (2-amino-5,6,7,8-tetrahydronaphthalene) -6-clilorantlirachinon is obtained in pure form in dark crystals which dissolve green in organic solvents . The dye base is converted into a water-soluble dye by treating with sulfonating agents, for example 5 to 10 oleum, at 15 to 450, which dyes wool in very real green tones. The dye is a dark green powder, which can be seen in water with green, Dissolves in sulfuric acid with a blue color. He owns the formula
EMI0002.0001


 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines wasser löslichen Farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, dass man ein Gemisch von Leuko-6-chlorchinizarin und 6-Chlor- ehinizarin mit 2-Amino-ö,6,7,8-tetrahz-dro- naphthalin kondensiert und die erhaltene Base sulfoniert. Der neue Farbstoff besitzt die Formel EMI0002.0009 Er stellt ein dunkelgrünes Pulver dar, das sich in Wasser mit grüner und in Schwefelsäure mit blauer Farbe löst. PATENT CLAIM: Process for the production of a water-soluble dye of the anthraquinone series, characterized in that a mixture of leuco-6-chloroquinizarin and 6-chloro-ehinizarin is condensed with 2-amino-6,7,8-tetrahzronaphthalene and sulfonated the base obtained. The new dye has the formula EMI0002.0009 It is a dark green powder that dissolves in water with a green color and in sulfuric acid with a blue color. Der Farbstoff färbt Wolle in sehr echten grünen Tönen an. The dye stains wool in very real green tones.
CH266373D 1951-11-21 1943-09-30 Process for the production of a new dye of the anthraquinone series. CH266373A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH266373T 1951-11-21

Publications (1)

Publication Number Publication Date
CH266373A true CH266373A (en) 1950-01-31

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ID=4476072

Family Applications (1)

Application Number Title Priority Date Filing Date
CH266373D CH266373A (en) 1951-11-21 1943-09-30 Process for the production of a new dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH266373A (en)

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