AT46469B - Process for the preparation of a dye of the gallocyanin series. - Google Patents

Process for the preparation of a dye of the gallocyanin series.

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Publication number
AT46469B
AT46469B AT46469DA AT46469B AT 46469 B AT46469 B AT 46469B AT 46469D A AT46469D A AT 46469DA AT 46469 B AT46469 B AT 46469B
Authority
AT
Austria
Prior art keywords
gallocyanin
dye
series
preparation
hydrochloric acid
Prior art date
Application number
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German (de)
Original Assignee
Farbenfab Vorm Bayer F & Co
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 Farbenfab Vorm Bayer F & Co filed Critical Farbenfab Vorm Bayer F & Co
Application granted granted Critical
Publication of AT46469B publication Critical patent/AT46469B/en

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  • Optical Filters (AREA)
  • Spectrometry And Color Measurement (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung eines Farbstoffs der   Gallocyaninreihe.   



   In dem Stammpatent Nr. 33994 und seinem Zusatzpatent Nr. 38662 ist ein Verfahren zur Darstellung eines Farbstoffes aus Gallocyanin beschrieben, das darin besteht, dass man Gallocyanin in Suspension oder Lösung erhitzt. 



   Es wurde nun gefunden, dass man zu einem wertvollen Farbstoff der Gallocyaninreihe, der einen erheblich klareren und blaueren Chromlack, als der in dem Stammpatent beschriebene bildet, gelangen kann, wenn man das seither technisch unzugängliche nach Patent Nr.   45602   jetzt leicht erhältliche   Diäthylgallocyanin   (Farbstoff aus Nitrosodiäthylanilin und   Gallussäure)   nach dem Verfahren des   Stammpatentes   und seines Zusatzpatentes behandelt. Zu dem gleichen Farbstoff kann man auch gelangen, wenn man das Diäthyl-   gallocyanin   dem Verfahren der   deutschen Roichspatente Nr. 201149   und 205215 unterwirft. 



   Beispiel. 



   100 Teile des nach dem Patente   Nr. 45062   direkt   erhältlichen     1. 5-naphtalindislllfo-   sauren   Diäthylgallocyanius   (oder die   äquivalente   Menge eines anderen Salzes) werden mit 15 Teilen Na. 0   H   in wässeriger Lösung mehrere Stunden erhitzt, bis eine Probe in   Sorlalösung unlöslich   ist und sich in Salzsäure von   200 Bé   blau löst. Der ausgefallene Farbstoff wird abgesaugt und zweckmässig in das salzsaure Salz überführt. 



   Das salzsaure Salz des   Farbstoffes bildet dunkelgrüne Kristalle,   die sich in Wasser violett lösen : auf Zusatz von Salzsäure schlägt die Farbe nach rot um. Der Farbstoff unterscheidet sich von dem   Ausgangsmaterial   scharf durch seine Unlöslichkeit in Soda und die blaue Farbe der Lösung in Salzsäure   200 llè   ; der Ausgangsfarbstoff ist in Soda leicht löslich und löst sich in Salzsäure 20  Bé violett. 



   Er liefert erheblich klarere Töne als das Produkt des Stammpatentes. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



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  Process for the preparation of a dye of the gallocyanin series.



   In the parent patent no. 33994 and its additional patent no. 38662, a process for preparing a dye from gallocyanin is described, which consists in heating gallocyanin in suspension or solution.



   It has now been found that a valuable dye of the gallocyanin series, which forms a considerably clearer and bluer chrome lacquer than that described in the parent patent, can be obtained if diethylgallocyanine, which has since been technically inaccessible according to patent no from nitrosodiethylaniline and gallic acid) according to the procedure of the parent patent and its additional patent. The same dye can also be obtained if the diethylgallocyanine is subjected to the process of the German Roichspatents 201149 and 205215.



   Example.



   100 parts of the 1. 5-naphtalindislllfosauren Diethylgallocyanius (or the equivalent amount of another salt) which is directly obtainable according to the patent no. 0 H in an aqueous solution heated for several hours until a sample is insoluble in Sorla solution and dissolves blue in hydrochloric acid of 200 Bé. The precipitated dye is filtered off with suction and conveniently converted into the hydrochloric acid salt.



   The hydrochloric acid salt of the dye forms dark green crystals, which dissolve in water in a violet color: when hydrochloric acid is added, the color changes to red. The dye differs sharply from the starting material in that it is insoluble in soda and the blue color of the solution in hydrochloric acid 200 llè; the starting dye is easily soluble in soda and dissolves in hydrochloric acid 20 Be purple.



   It delivers much clearer tones than the product of the parent patent.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH-. PATENT CLAIM. Abänderung des Verfahrens des Stammpatentes Nr. 33994 und seines Zusatzpatentes Nr. 38662 zur Darstellung eines Farbstoffes der Gallocyaninreihe, dadurch gekennzeichnet, dass man an Stelle des gewöhnlichen Gallocyanins hier das Gallocyanin aus Nitrosodiäthyl- anilin und Gallussäure als Base oder in Form seiner Salze, zwecks Abspaltung der EMI1.1 Zusatz von neutralen Salzen, erhitzt. Modification of the procedure of the parent patent No. 33994 and its additional patent No. 38662 for the representation of a dye of the gallocyanin series, characterized in that instead of the usual gallocyanin, the gallocyanin from nitrosodiethylaniline and gallic acid as a base or in the form of its salts, for the purpose of splitting off the EMI1.1 Added neutral salts, heated. *) Erstes Zusatzpatent Nr. 37275, zweites Zusatzpatent Nr. 38662. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. *) First additional patent No. 37275, second additional patent No. 38662. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT46469D 1907-11-11 1910-02-26 Process for the preparation of a dye of the gallocyanin series. AT46469B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT33994T 1907-11-11
DE46469X 1909-03-12

Publications (1)

Publication Number Publication Date
AT46469B true AT46469B (en) 1911-02-10

Family

ID=25599986

Family Applications (1)

Application Number Title Priority Date Filing Date
AT46469D AT46469B (en) 1907-11-11 1910-02-26 Process for the preparation of a dye of the gallocyanin series.

Country Status (1)

Country Link
AT (1) AT46469B (en)

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