CH147042A - Process for the production of an orange vat dye. - Google Patents

Process for the production of an orange vat dye.

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Publication number
CH147042A
CH147042A CH147042DA CH147042A CH 147042 A CH147042 A CH 147042A CH 147042D A CH147042D A CH 147042DA CH 147042 A CH147042 A CH 147042A
Authority
CH
Switzerland
Prior art keywords
production
vat dye
anthanthrone
dye
orange vat
Prior art date
Application number
Other languages
German (de)
Inventor
Leopold Cassela Co Ges Haftung
Original Assignee
Leopold Cassela & Co Ges Mit B
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
Priority claimed from DEC37412D external-priority patent/DE458598C/en
Application filed by Leopold Cassela & Co Ges Mit B filed Critical Leopold Cassela & Co Ges Mit B
Publication of CH147042A publication Critical patent/CH147042A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Coloring (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Description

  

  Verfahren zur Herstellung eines orangen     Küpenfarbstoffes.       Im Hauptpatent Nr. 124528 und seinen bis  herigen Zusätzen ist die Herstellung von echten  orangen     Küpenfarbstoffen        durchHalogenierung     von     Anthanthron    unter bestimmten Bedin  gungen beschrieben.  



  Es wurde gefunden, dass sich     Anthanthron     auch in wässeriger Suspension in Gegenwart  oder Abwesenheit von     Natalysatoren,    wie zum  Beispiel Jod, Eisenchlorid usw.     halogenieren     lässt.  



  Bei der an sich schweren Substituierbar  keit des     Anthantlirons    ist die glatte Durch  führbarkeit des vorliegenden Verfahrens über  raschend.  



  Die dabei entstehenden Farbstoffe ent  sprechen in ihren     färberischen    und chemischen  Eigenschaften denen des Hauptpatentes.  



       Vorliegendes    Patent bezieht sich nun auf  ein Verfahren zur Herstellung eines orangen       Küpenfarbstoffes,    dadurch gekennzeichnet,  dass man     Antlianthron    in wässeriger Suspen  sion     bromiert.       Das so erhaltene     bromierte        Anthanthron     ist identisch mit dein     Farbstoff    des Schwei  zer Patentes Nr. 130618.  



  <I>Beispiel 1:</I>  150 Teile einer 10     o/oigen    wässerigen Paste  von     Anthanthron    werden mit 80 Teilen Brom  versetzt. Man erwärmt langsam auf etwa  60-65   und hält bei dieser Temperatur einige  Zeit, Man verdünnt mit Wasser, entfernt das  überschüssige Brom zum Beispiel durch Behan  deln mit     Bisulfit,    saugt den Rückstand ab,  wäscht und trocknet.  



  Durch     Überführung    in das schwer lösliche  Sulfat durch Behandeln mit Schwefelsäure  von mässigem Wassergehalt nach dem Ver  fahren des Schweizer Patentes Nr. 140102  oder durch     Umkristallisieren    aus hochsieden  den Lösungsmitteln, wie aus Nitrobenzol, wird  der Farbstoff in reiner Form erhalten.      Vorteilhaft setzt man bei der Reaktion  einen Katalysator, zum Beispiel 0,2 Teile  Jod, zu.  



  <I>Beispiel 2:</I>  150 Teile einer 10     o/oigen    Paste von     An-          thanthron    werden mit 80 Teilen Brom ver  setzt. Man erwärmt auf etwa<B>60-650</B> und  tropft bei dieser Temperatur 220 Teile  17,5     o/oiger    Natronlauge ein. Die Reaktions  masse wird nach     Beispiel    1 aufgearbeitet.



  Process for the production of an orange vat dye. In the main patent No. 124528 and its previous additions, the production of real orange vat dyes by halogenation of anthanthrone is described under certain conditions.



  It has been found that anthanthrone can also be halogenated in aqueous suspension in the presence or absence of catalysts such as iodine, iron chloride, etc.



  Given the difficult substitutability of anthantliron, the smooth feasibility of the present process is surprising.



  The dyeing and chemical properties of the resulting dyes correspond to those of the main patent.



       The present patent now relates to a process for the production of an orange vat dye, characterized in that antlianthrone is brominated in an aqueous suspension. The brominated anthanthrone obtained in this way is identical to the dye of the Swiss patent No. 130618.



  <I> Example 1 </I> 150 parts of a 10% aqueous paste of anthanthrone are mixed with 80 parts of bromine. The mixture is slowly heated to about 60-65 and held at this temperature for some time. The mixture is diluted with water, the excess bromine is removed, for example by treating with bisulfite, the residue is filtered off with suction, washed and dried.



  The dye is obtained in pure form by converting it into the sparingly soluble sulfate by treating it with sulfuric acid with a moderate water content according to the method of Swiss patent no. 140102 or by recrystallization from high-boiling solvents such as nitrobenzene. A catalyst, for example 0.2 part of iodine, is advantageously added to the reaction.



  <I> Example 2 </I> 150 parts of a 10% paste of anthanthrone are mixed with 80 parts of bromine. The mixture is heated to about 60-650 and 220 parts of 17.5% sodium hydroxide solution are added dropwise at this temperature. The reaction mass is worked up according to Example 1.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines orangen Küpenfarbstoffes, dadurch gekennzeichnet, dass man Anthanthron in wässeriger Suspen sion bromiert. Das so erhaltene bromierte Anthanthron ist identisch mit dem Farbstoff des Schweizer Patentes Nr. 130618. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Reaktion in Gegenwart eines Katalysators durchführt. PATENT CLAIM: Process for the production of an orange vat dye, characterized in that anthanthrone is brominated in an aqueous suspension. The brominated anthanthrone obtained in this way is identical to the dye of Swiss patent no. 130618. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that the reaction is carried out in the presence of a catalyst.
CH147042D 1925-11-07 1929-11-25 Process for the production of an orange vat dye. CH147042A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEC37412D DE458598C (en) 1925-11-07 1925-11-07 Process for the production of orange dyes
CH124528T 1926-11-02

Publications (1)

Publication Number Publication Date
CH147042A true CH147042A (en) 1931-05-15

Family

ID=29216709

Family Applications (7)

Application Number Title Priority Date Filing Date
CH130618D CH130618A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH124528D CH124528A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH135114D CH135114A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH131505D CH131505A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH130617D CH130617A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH147042D CH147042A (en) 1925-11-07 1929-11-25 Process for the production of an orange vat dye.
CH147699D CH147699A (en) 1925-11-07 1929-12-02 Process for the production of an orange vat dye.

Family Applications Before (5)

Application Number Title Priority Date Filing Date
CH130618D CH130618A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH124528D CH124528A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH135114D CH135114A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH131505D CH131505A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.
CH130617D CH130617A (en) 1925-11-07 1926-11-02 Process for the preparation of an orange-colored vat dye of the anthanthrone series.

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH147699D CH147699A (en) 1925-11-07 1929-12-02 Process for the production of an orange vat dye.

Country Status (1)

Country Link
CH (7) CH130618A (en)

Also Published As

Publication number Publication date
CH147699A (en) 1931-06-15
CH135114A (en) 1929-08-31
CH130617A (en) 1928-12-15
CH130618A (en) 1928-12-15
CH124528A (en) 1928-03-16
CH131505A (en) 1929-02-15

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