CH252301A - Process for the production of a new anthraquinone dye. - Google Patents

Process for the production of a new anthraquinone dye.

Info

Publication number
CH252301A
CH252301A CH252301DA CH252301A CH 252301 A CH252301 A CH 252301A CH 252301D A CH252301D A CH 252301DA CH 252301 A CH252301 A CH 252301A
Authority
CH
Switzerland
Prior art keywords
production
new
anthraquinone dye
new anthraquinone
dye
Prior art date
Application number
Other languages
German (de)
Inventor
Limited Imperial Ch Industries
Original Assignee
Ici Ltd
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 Ici Ltd filed Critical Ici Ltd
Publication of CH252301A publication Critical patent/CH252301A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B56/00—Azo dyes containing other chromophoric systems
    • C09B56/12—Anthraquinone-azo dyes

Description

  

      Zusatzpatent    zum Hauptpatent Nr.     243337.       Verfahren zur Herstellung     eines    neuen     Anthrachinonfarhstoffes.       Die vorliegende Erfindung betrifft ein  Verfahren zur Herstellung     eines    neuen     An-          thrachinonfarbstoffes,    wobei man     2-Brom-4-          p        -benzolazoanilin        -1-benzoylamino-anthrachi-          non    oxydiert und dermassen     sulfoniert,    dass  2     Sulfonsäuregruppen    in das Molekül ein  treten.  



  Der auf diese     Weise    erhaltene neue Farb  stoff stellt ein braunes Pulver dar, das in  Wasser löslich ist. Er färbt Wolle in tief  braunen Tönen von ausgezeichneten Echt  heitseigenschaften.  



  Als     Oxydationsmittel    kann man     Schwe-          feltrioxyd    oder     Chlorsulfonsäure    verwenden.  Die     Oxydation    sowie     Sulfonierung    können  gleichzeitig oder nacheinander erfolgen. Die  Umsetzungen können     gewünschtenfalls    in  einem Lösungsmittel, zweckmässig Schwefel  säure, durchgeführt werden.  



  Die vorliegende Erfindung sei durch das  nachstehende Beispiel     erläutert,    wobei die  darin erwähnten Teile jeweils     Gewichtsteile     bedeuten.  



  <I>Beispiel:</I>  5 Teile     2-Brom-4-p-benzolazoanilin-l-ben-          zoylamino-anthrachinon    werden in 35 Teilen  20     %        igem        Oleum    gelöst, worauf die erhaltene  Lösung gerührt und so lange auf 30 bis     35     C    erwärmt wird, bis eine in eine verdünnte       kaustische        Södalösung    eingetragene Probe  keinen unlöslichen Niederschlag mehr ergibt.  Dies ist nach ca. 4     Stunden    der Fall. Hier  auf wird das     Gemisch        in    ein aus 150 Teilen  Eis und 50 Teilen Wasser bestehendes Ge  misch eingetragen.

   Dadurch erhält man  einen braunen     Niederschlag,    der     abfiltriert     wird. Nun wird der Filterkuchen in verdünn  ter     Natriumcarbonatlösung    gelöst und der  Farbstoff aus dieser Lösung durch Zugabe  von Kochsalz ausgefällt. Der so erzeugte       Farbstoff    wird schliesslich     abfiltriert    und ge  trocknet.: Er färbt Wolle in tiefbraunen  Farbtönen von hervorragender Echtheit.



      Additional patent to main patent no. 243337. Process for the production of a new anthraquinone fiber. The present invention relates to a process for the preparation of a new anthraquinone dye, wherein 2-bromo-4-p -benzolazoaniline -1-benzoylamino-anthraquinone is oxidized and sulfonated to such an extent that 2 sulfonic acid groups enter the molecule.



  The new dye obtained in this way is a brown powder that is soluble in water. It dyes wool in deep brown shades with excellent fastness properties.



  Sulfur trioxide or chlorosulfonic acid can be used as the oxidizing agent. The oxidation and sulfonation can take place simultaneously or in succession. If desired, the reactions can be carried out in a solvent, advantageously sulfuric acid.



  The present invention is illustrated by the following example, the parts mentioned therein each being parts by weight.



  <I> Example: </I> 5 parts of 2-bromo-4-p-benzolazoaniline-1-benzoylamino-anthraquinone are dissolved in 35 parts of 20% oleum, whereupon the resulting solution is stirred and kept at 30 to 35 C is heated until a sample added to a dilute caustic soda solution no longer gives an insoluble precipitate. This is the case after approx. 4 hours. Here on the mixture is entered into a mixture consisting of 150 parts of ice and 50 parts of water.

   This gives a brown precipitate which is filtered off. The filter cake is then dissolved in dilute sodium carbonate solution and the dye is precipitated from this solution by adding sodium chloride. The dye produced in this way is then filtered off and dried. It dyes wool in deep brown shades of excellent fastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Anthrachinonfarbstoffes, dadurch gekenn zeichnet, dass man 2-Brom-4-p-benzolazoani- lin -1- benzoylamino - anthra,chinon oxydiert und dermassen sulfoniert, dass 2 Sulfonsäure- grurppen in das 1VI.olekül eintreten. Der auf diese Weise erhaltene neue Farb stoff stellt ein braunes Pulver dar, das: in Wasser löslich ist. Er färbt Wolle in tief braunen Tönen von ausgezeichneten Echt heitseigenschaften. PATENT CLAIM: Process for the production of a new anthraquinone dye, characterized in that 2-bromo-4-p-benzolazoaniline -1-benzoylamino-anthra, quinone is oxidized and sulfonated to such an extent that 2 sulfonic acid groups enter the 1VI.olekül . The new dye obtained in this way is a brown powder that: is soluble in water. It dyes wool in deep brown shades with excellent fastness properties.
CH252301D 1942-10-09 1943-10-06 Process for the production of a new anthraquinone dye. CH252301A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB252301X 1942-10-09
GB280743X 1943-07-28
CH243337T 1943-10-06

Publications (1)

Publication Number Publication Date
CH252301A true CH252301A (en) 1947-12-15

Family

ID=27177995

Family Applications (1)

Application Number Title Priority Date Filing Date
CH252301D CH252301A (en) 1942-10-09 1943-10-06 Process for the production of a new anthraquinone dye.

Country Status (1)

Country Link
CH (1) CH252301A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719841A (en) * 1951-07-09 1955-10-04 Du Pont Azobiphenylcarbonylaminoanthraquinone compounds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719841A (en) * 1951-07-09 1955-10-04 Du Pont Azobiphenylcarbonylaminoanthraquinone compounds

Similar Documents

Publication Publication Date Title
CH252301A (en) Process for the production of a new anthraquinone dye.
CH243337A (en) Process for the production of a new anthraquinone dye.
DE241910C (en)
DE564435C (en) Process for the preparation of Dihalogenanthraquinone mono-ª ‡ -carboxylic acids
CH102540A (en) Process for the preparation of an indigo derivative.
DE414084C (en) Process for the preparation of dyes of the thioindigo series
DE523464C (en) Process for the production of colored lakes
AT96507B (en) Process for the preparation of vat dyes and raw materials therefor.
AT66210B (en) Process for the preparation of green related dyes.
DE656382C (en) Process for the preparation of nitrogen- and sulfur-containing compounds of the anthraquinone series
DE842378C (en) Process for the preparation of leuco-sulfuric acid esters of anthraquinone-azo dyes
DE438934C (en) Process for the preparation of dyes of the anthraquinone series
DE890555C (en) Process for the preparation of a leuco sulfuric acid ester of the naphthothiophenindolindigo series
US415359A (en) Emil elsaesser
DE465834C (en) Process for the production of Kuepen dyes from benzanthrone derivatives
DE380712C (en) Process for the production of Kuepen dyes and raw materials for them
DE472925C (en) Process for the preparation of sulphonic acids from hydro-compounds of Kuepen dyes
DE423093C (en) Process for the production of post-chromable dyes of the pyrone series
DE737345C (en) Process for the preparation of leuco-sulfuric acid esters of the anthraquinone series
DE495366C (en) Process for the preparation of benzanthrone derivatives
AT99200B (en) Process for the preparation of acidic wool dyes of the antraquinone series.
DE651595C (en) Process for the production of sulfur dyes
DE711159C (en) Process for the preparation of a fluoranthene monosulfonic acid
CH303287A (en) Process for the preparation of an anthraquinone naphthocarbazole dye.
CH259315A (en) Process for the preparation of a new monoazo dye.