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CH143400A - Process for the preparation of a vat dye. - Google Patents

Process for the preparation of a vat dye.

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Publication number
CH143400A
CH143400A CH143400DA CH143400A CH 143400 A CH143400 A CH 143400A CH 143400D A CH143400D A CH 143400DA CH 143400 A CH143400 A CH 143400A
Authority
CH
Switzerland
Prior art keywords
anthanthrone
preparation
dye
vat dye
vat
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 CH143400A publication Critical patent/CH143400A/en

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Description

  

      Verfahren    zur     Darstellung    eines     Iüipenfarbstoffes.       Es wurde gefunden,     dass    man einen wert  vollen     Küpenfarbstoff    erhalten kann, wenn  man     Anthanthron    mit jodierenden     Mitteln     behandelt.  



  Der erhaltene Farbstoff, ein Monojod  anthanthron, löst sich in     konzentrierterSchwe-          felsäure    mit grüner Farbe und gibt mit alka  lischer     Hydrosulfitlösung    eine     violettrote          Küpe,    aus der     Baumwolle    in orangefarbenen  Tönen gefärbt wird.  



  An Stelle von dem isolierten     Anthanthron     auszugehen, kann man auch die hei der Dar  stellung des     Anthanthronaus    1 .     1'-Dinaph-          tyl-8.8'-dicarbonsäure    erhaltene schwefel  saure Lösung des     Anthanthrons    verwenden;

         ma.n    erspart sich so die Isolierung des     An-          thanthrons.    An Stelle von Jod kann man  auch andere jodierende Mittel, zum Beispiel       Kaliumjodid,        verwenden.       <I>Beispiel:</I>  30,6 Teile     Anthanthron,    dargestellt zum  Beispiel durch Behandeln von 1 .     1'-Dina.ph-          tyl    - 8 . 8' -     diearbonsäure    mit     konzentrierter     Schwefelsäure, werden in 300 Teilen Mono  hydrat auf 120   C erhitzt,     v,@orauf    die Lö  sung im Laufe einer Stunde mit<B>12,7</B> Teilen  Jod versetzt. und unter.

   Rühren noch eine  Stunde lang auf 120 bis 130   C erhitzt wird.  Nach dem Erkalten giesst man auf Eis, saugt  ab und trocknet.  



  Der erhaltene Farbstoff kann durch Um  kristallisieren aus hochsiedenden organischen  Lösungsmitteln, zum Beispiel     \iitrobenzol,     oder über das sich aus wasserhaltiger Schwe  felsäure ausscheidende Sulfat     gereinigt    wer  den.



      Process for the preparation of a jipen dye. It has been found that valuable vat dye can be obtained by treating anthanthrone with iodine agents.



  The dye obtained, a monoiodanthanthrone, dissolves in concentrated sulfuric acid with a green color and, with alkaline hydrosulfite solution, gives a violet-red vat from which cotton is dyed in orange tones.



  Instead of starting from the isolated anthanthrone, one can also use the hot representation of the anthanthrone from 1. 1'-Dinaphthyl-8.8'-dicarboxylic acid, use the sulfuric acid solution of the anthanthrone obtained;

         This saves the isolation of the anthanthrone. Instead of iodine, you can also use other iodising agents, for example potassium iodide. <I> Example: </I> 30.6 parts of anthanthrone, represented for example by treating 1. 1'-Dina.ph- tyl - 8. 8′-dicarboxylic acid with concentrated sulfuric acid are heated to 120 ° C. in 300 parts of monohydrate, and 12.7 parts of iodine are added to the solution over the course of one hour. and under.

   Stirring is heated to 120 to 130 C for another hour. After cooling, it is poured onto ice, filtered off with suction and dried.



  The dye obtained can be purified by recrystallization from high-boiling organic solvents, for example nitrobenzene, or via the sulphate which separates out from hydrous sulfuric acid.

 

Claims (1)

PATENTANSPRUCH Zerfahren zur Darstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass man Anthanthron mit jodierenden Mitteln behan delt. Der erhaltene Farbstoff, ein Monojod- anthanthron, löst sieh in konzentrierter Schwefelsäure mit grüner Farbe und gibt mit alkalischer Hydrosulfitlösunb-eine vio- lettrote Küpe, aus der Baumwolle in orange farbenen Tönen gefärbt wird. PATENT CLAIM Processed to display a vat dye, characterized in that anthanthrone is treated with iodizing agents. The dye obtained, a monoiodanthanthrone, dissolves in concentrated sulfuric acid with a green color and, with alkaline hydrosulfite solution, gives a violet-red vat from which cotton is dyed in orange shades.
CH143400D 1928-05-29 1929-05-21 Process for the preparation of a vat dye. CH143400A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE143400X 1928-05-29

Publications (1)

Publication Number Publication Date
CH143400A true CH143400A (en) 1930-11-15

Family

ID=5669683

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143400D CH143400A (en) 1928-05-29 1929-05-21 Process for the preparation of a vat dye.

Country Status (1)

Country Link
CH (1) CH143400A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1288265B (en) * 1966-07-06 1969-01-30 Mayr Friedrich Wilhelm shelf

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1288265B (en) * 1966-07-06 1969-01-30 Mayr Friedrich Wilhelm shelf

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