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CH146440A - Process for the preparation of a vat dye. - Google Patents

Process for the preparation of a vat dye.

Info

Publication number
CH146440A
CH146440A CH146440DA CH146440A CH 146440 A CH146440 A CH 146440A CH 146440D A CH146440D A CH 146440DA CH 146440 A CH146440 A CH 146440A
Authority
CH
Switzerland
Prior art keywords
dye
vat
preparation
vat dye
violet
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 CH146440A publication Critical patent/CH146440A/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
    • C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
    • C09B5/24—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position
    • C09B5/34—Anthraquinone acridones or thioxanthrones
    • C09B5/36—Amino acridones

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

      Zusatzpatentzum    Hauptpatent     Nr.    143399.    Verfahren zur Darstellung eines     Küpenfarbstoffes.       Im Hauptpatent ist ein Verfahren zur  Darstellung eines violetten     Küpenfarbstoffes     beschrieben, das darin besteht,     dass    man den  nach dein Verfahren des     schweiz.    Patentes       Nr.   <B>56472</B> erhältlichen Farbstoff mit     p-Toluol-          sulfamid    behandelt.  



  Es wurde nun gefunden,     dass    man einen  Farbstoff von noch besseren Eigenschaften  erhalten kann, wenn man den nach dem  Verfahren der     schweiz.    Patentschrift     Nr.   <B>56472</B>  erhaltenen     Küpenfarbstoff    mit     Benzamid    be  handelt.  



  Der erhaltene Farbstoff bildet, aus     Tri-          chlorbenzol    oder Nitrobenzol umkristallisiert,  schöne. dunkelviolette glänzende Nadeln, die  sich in Schwefelsäure mit braunroter Farbe  lösen und die aus violetter     Küpe    Baumwolle  in blauvioletten, ausserordentlich echten Tönen  färben.  



  <I>Beispiel:</I>  4 Teile des nach dem Verfahren des     schweiz.     Patentes     Nr.    56472 hergestellten     Küpenfarb-          stoffes    werden mit<B>1,8</B> Teilen     Benzamid,   <B>0,6</B>    Teilen     wasserfreiern        -'LNZatriumacetat,   <B>0,05</B> Tei  len     Kupferacetat    und 20 Teilen     Nitrobenzol     so lange unter Rühren zum Sieden erhitzt,  bis die Intensität der Färbung nicht mehr  zunimmt. Man     lässt    dann erkalten und arbeitet  in der üblichen Weise auf.



      Additional patent to main patent no. 143399. Process for the preparation of a vat dye. The main patent describes a process for the preparation of a violet vat dye, which consists in the fact that you use the method of Switzerland. Patent no. <B> 56472 </B> treated with p-toluenesulfamide.



  It has now been found that a dye with even better properties can be obtained by using the Swiss method. Patent No. 56472 obtained vat dye with benzamide.



  The dye obtained, recrystallized from trichlorobenzene or nitrobenzene, forms beautiful. dark purple, shiny needles which dissolve in sulfuric acid with a brownish red color and which, from a purple vat, dye cotton in blue-purple, extraordinarily real tones.



  <I> Example: </I> 4 parts of the procedure of the Swiss. Patent no. 56472 vat dyestuff produced with <B> 1.8 </B> parts of benzamide, <B> 0.6 </B> parts of anhydrous sodium acetate, <B> 0.05 </B> parts len copper acetate and 20 parts of nitrobenzene are heated to boiling with stirring until the intensity of the coloration no longer increases. You then let it cool down and work up in the usual way.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Darstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass man den nach dem Verfahren des schweiz. Patentes Nr. 56472 erhältlichen Küpenfarbstoff mit Benzamid behandelt. Der erhaltene Farbstoff bildet, aus Tri- chlorbenzol oder Nitrobenzol umkristallisiert, schöne dunkelviolette, glänzende Nadeln, die sich in Schwefelsäure mit braunroter Farbe lösen und die aus violetter Küpe Baumwolle in blauvioletten, ausserordentlich echten Tönen färben. <B> PATENT CLAIM: </B> Process for the preparation of a vat dye, characterized in that one uses the process of Switzerland. Vat dye available in U.S. Patent No. 56472 was treated with benzamide. The dye obtained, recrystallized from trichlorobenzene or nitrobenzene, forms beautiful dark violet, shiny needles which dissolve in sulfuric acid with a brownish-red color and which, from a violet vat, dye cotton in blue-violet, extremely genuine shades.
CH146440D 1929-05-21 1929-05-21 Process for the preparation of a vat dye. CH146440A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH143399T 1929-05-21
CH146440T 1929-05-21

Publications (1)

Publication Number Publication Date
CH146440A true CH146440A (en) 1931-04-15

Family

ID=25714275

Family Applications (1)

Application Number Title Priority Date Filing Date
CH146440D CH146440A (en) 1929-05-21 1929-05-21 Process for the preparation of a vat dye.

Country Status (1)

Country Link
CH (1) CH146440A (en)

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