CH200287A - Process for the preparation of an acidic dye. - Google Patents

Process for the preparation of an acidic dye.

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Publication number
CH200287A
CH200287A CH200287DA CH200287A CH 200287 A CH200287 A CH 200287A CH 200287D A CH200287D A CH 200287DA CH 200287 A CH200287 A CH 200287A
Authority
CH
Switzerland
Prior art keywords
preparation
weight
parts
acidic dye
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 CH200287A publication Critical patent/CH200287A/en

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Description

  

  Verfahren     zur    Herstellung eines     sauren        Farbstoffes.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines sauren  Farbstoffes. Das Verfahren ist dadurch ge  kennzeichnet, dass man     4-Benzoylamiro-1.2-          diaminoanthrachinon    mit     "Isatin    kondensiert  und das erhaltene Produkt sulfoniert. Der  neue Farbstoff stellt ein dunkles, mit brauner  Farbe lösliches Pulver dar.

      <I>Beispiel:</I>  36 Gewichtsteile     4-Benzoylamino-1.2-          diaminoanthrachinon,   <B>15</B> Gewichtsteile     Isatin,     500 Gewichtsteile Eisessig und 50 Gewichts  teile Wasser werden 18 Stunden unter Rühren  und     Rückfluss    gekocht, der gebildete     Chin-          ogalinfarbstoff    der     Konstitution     
EMI0001.0014     
    durch Eintragen in Wasser gefällt, abgesaugt,  ausgewaschen und getrocknet. Er löst sich  in konzentrierter Schwefelsäure grün, während  sich die     Ausgangsstoffe    rot lösen.

   Die Kon  densation kann auch in einem andern Lö-         sungamittel,    wie kochendem     Trichlorbenzol,     vorgenommen werden.  



  40 Gewichtsteile des so erhaltenen Kon  densationsproduktes wurden in 90 Gewichts  teilen     monohydratischer    Schwefelsäure gelöst,      20 Gewichtsteile Borsäure, 270 Gewichtsteile  65     o/oigen        Oleums    zugegeben und auf<B>100'</B>  erwärmt, bis Löslichkeit in Alkali erzielt ist.  Man gibt auf Eis, filtriert ab, löst in Alkali,  filtriert und fällt das Filtrat mit Salzsäure  und Kochsalz. Der so erhaltene     Farbstoff     wird abgesaugt, mit Kochsalzlösung gewa  schen und getrocknet.  



  Der so erhaltene Farbstoff färbt Wolle  aus saurem Bad in tiefen     Bordotönen    an,  die eine hervorragende Lichtechtheit zeigen.



  Process for the preparation of an acidic dye. The present patent relates to a process for the preparation of an acidic dye. The process is characterized in that 4-benzoylamiro-1,2-diaminoanthraquinone is condensed with isatin and the product obtained is sulfonated. The new dye is a dark powder which is soluble in brown color.

      <I> Example: </I> 36 parts by weight of 4-benzoylamino-1,2-diaminoanthraquinone, <B> 15 </B> parts by weight of isatin, 500 parts by weight of glacial acetic acid and 50 parts by weight of water are boiled for 18 hours with stirring and reflux, the chin - ogaline pigment of the constitution
EMI0001.0014
    precipitated by immersion in water, suctioned off, washed out and dried. It dissolves green in concentrated sulfuric acid, while the starting materials dissolve red.

   The condensation can also be carried out in another solvent, such as boiling trichlorobenzene.



  40 parts by weight of the condensation product thus obtained were dissolved in 90 parts by weight of monohydric sulfuric acid, 20 parts by weight of boric acid and 270 parts by weight of 65% oleum were added and the mixture was heated to 100% until solubility in alkali was achieved. It is poured onto ice, filtered off, dissolved in alkali, filtered and the filtrate is precipitated with hydrochloric acid and common salt. The dye obtained in this way is filtered off with suction, washed with saline solution and dried.



  The dye obtained in this way dyes wool from an acid bath in deep Bordeaux tones, which show excellent lightfastness.

 

Claims (1)

PATENTANSPRUCg Verfahren zur Herstellung eines sauren Farbstoffes, dadurch gekennzeichnet, dass man 4-Benzoylamino-1.2-diaminoanthrachinon mit Isatin kondensiert und das erhaltene Produkt sulfoniert. Der neue Farbstoff stellt ein dunkles, mit brauner Farbe lösliches Pulver dar. PATENT CLAIM A process for the production of an acidic dye, characterized in that 4-benzoylamino-1,2-diaminoanthraquinone is condensed with isatin and the product obtained is sulfonated. The new dye is a dark powder that is soluble in brown color.
CH200287D 1936-05-12 1937-04-30 Process for the preparation of an acidic dye. CH200287A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200287X 1936-05-12
CH198717T 1937-04-30

Publications (1)

Publication Number Publication Date
CH200287A true CH200287A (en) 1938-09-30

Family

ID=25723172

Family Applications (1)

Application Number Title Priority Date Filing Date
CH200287D CH200287A (en) 1936-05-12 1937-04-30 Process for the preparation of an acidic dye.

Country Status (1)

Country Link
CH (1) CH200287A (en)

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