CH143396A - Process for the production of a vat dye of the anthanthrone series. - Google Patents

Process for the production of a vat dye of the anthanthrone series.

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Publication number
CH143396A
CH143396A CH143396DA CH143396A CH 143396 A CH143396 A CH 143396A CH 143396D A CH143396D A CH 143396DA CH 143396 A CH143396 A CH 143396A
Authority
CH
Switzerland
Prior art keywords
production
vat dye
anthanthrone
violet
sulfur
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 CH143396A publication Critical patent/CH143396A/en

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Description

  

  Verfahren zur Herstellung eines     Küpenfarbstoffes    der     Anthanthronreihe.       Es wurde gefunden,     dass    man bei der  Einwirkung von schwefelabgebenden Mitteln,  zum Beispiel     xanthogensaurein    Kali auf       Halogenanthanthrone    zu neuen Körpern ge  langt, die teils selbst wertvolle     Küperifarb-          stoffe    darstellen, teils als Zwischenprodukte  für weitere Farbstoffe dienen können.  



  Gegenstand vorliegender Erfindung ist       nun    ein Verfahren     zur    Herstellung eines       Küpenfarbstoffes    der     Anthanthronreihe,    da  durch gekennzeichnet,     dass    man 2<B>.</B>     7-Dibroni-          anthanthron    mit einem schwefelabgebenden  Mittel behandelt.    <I>Beispiel:</I>  4,6 Gewichtsteile 2<B>.</B>     7-Dibromanthanthron     werden in<B>250</B>     viii3        Nitrobefizol    kochend  gelöst, die Lösung wird auf zirka 120" ab  gekühlt und nun werden<B>10</B> Gewichtsteile       xanthogensaures    Kali eingetragen.

   Man hält  die Temperatur des Reaktionsgemisches auf  zirka<B>130-</B> 145     ',    wobei     iia("h    wenigen Min     Liten       Bräunung eintritt. Nach     1--11/2    ständigem  Stehen schlägt     die    Farbe des     Reaktionsge-          inisches    in     violettblau    um. Nach einigen  Stunden ist die     Abscheidung    des Farbstoffes  beendet. Die     violettgrauen        Nädelchen    werden       abgesatigt,    mit Alkohol gewaschen und mit  Wasser ausgekocht.

   Der Farbstoff färbt ans  rotvioletter     Küpe    Baumwolle in rotvioletten  Tönen von sehr guter Koch- und     Beuchecht-          heit    an.  



  Vermutlich bildet sich bei der     ini    Beispiel  beschriebenen Reaktion der 2.     2'-Dibrom-7.        V-          diarithanthronylthioäther    der Formel:  
EMI0001.0038     




  Process for the production of a vat dye of the anthanthrone series. It has been found that the action of sulfur-releasing agents, for example xanthogenous acid potassium on halanthanthrones, leads to new bodies, some of which are themselves valuable Küperi dyes, and some can serve as intermediate products for other dyes.



  The present invention now relates to a process for the production of a vat dye of the anthanthrone series, characterized in that 2 7-dibroni anthanthrone is treated with a sulfur-releasing agent. <I> Example: </I> 4.6 parts by weight 2 <B>. </B> 7-Dibromoanthanthrone are dissolved in <B> 250 </B> viii3 Nitrobefizol at the boil, the solution is cooled to approximately 120 "and Now <B> 10 </B> parts by weight of xanthic acid potash are entered.

   The temperature of the reaction mixture is kept at about 130-145 ', browning occurs for a few minutes. After standing for 1--11 / 2 hours, the color of the reaction mixture changes to violet-blue After a few hours, the deposition of the dye is complete.The violet-gray needles are removed, washed with alcohol and boiled with water.

   The dye stains cotton on the red-violet Küpe in red-violet shades of very good boil and touch fastness.



  Presumably, in the reaction described in the example, the 2nd 2'-dibromo-7 is formed. V- diarithanthronyl thioether of the formula:
EMI0001.0038

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes der Anthanthronreihe, dadurch ge- kennzeichnet, dass inan 2. 7-1)ibromantliaii- thron mit einein schwefelabgebenden Mittel behandelt. Der neue Farbstoff bildet violettgraue Nädelchen. Er färbt aus rotvioletter Küpe Baumwolle in<B>'</B> rotvioletten Tönen von sehr guter Koch- und Beuchechtheit an. PATENT CLAIM: Process for the preparation of a vat dye of the anthanthrone series, characterized in that inan 2. 7-1) treated ibromantliaiithron with a sulfur-releasing agent. The new dye forms purple-gray needles. It dyes cotton from a red-violet vat in <B> '</B> red-violet shades of very good cooking and cooking fastness. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass als sch-wefelabgebendes Mittel Alkalixanthogenat verwendet wird. SUBCLAIM: Process according to claim, characterized in that alkali metal oxanthate is used as the sulfur-releasing agent.
CH143396D 1928-02-03 1929-02-01 Process for the production of a vat dye of the anthanthrone series. CH143396A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE143396X 1928-02-03

Publications (1)

Publication Number Publication Date
CH143396A true CH143396A (en) 1930-11-15

Family

ID=5669680

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143396D CH143396A (en) 1928-02-03 1929-02-01 Process for the production of a vat dye of the anthanthrone series.

Country Status (1)

Country Link
CH (1) CH143396A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697289A (en) * 1951-04-06 1954-12-21 Burch Corp Trip blade snowplow

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697289A (en) * 1951-04-06 1954-12-21 Burch Corp Trip blade snowplow

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