AT56745B - Process for the preparation of a monoazo dye which is particularly suitable for the production of violet colored lakes. - Google Patents

Process for the preparation of a monoazo dye which is particularly suitable for the production of violet colored lakes.

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Publication number
AT56745B
AT56745B AT56745DA AT56745B AT 56745 B AT56745 B AT 56745B AT 56745D A AT56745D A AT 56745DA AT 56745 B AT56745 B AT 56745B
Authority
AT
Austria
Prior art keywords
preparation
production
particularly suitable
monoazo dye
violet colored
Prior art date
Application number
Other languages
German (de)
Original Assignee
Hoechst 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 Hoechst Ag filed Critical Hoechst Ag
Application granted granted Critical
Publication of AT56745B publication Critical patent/AT56745B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung eines besonders für die Herstellung violetter Farblacket geeigneten Monoazofarbstoffes. 



   Es wurde gefunden, dass man durch Kombination der   Diazovcrbinuung aus   1-Naphtylamin-2-sulfosäure mit 2-Naphtol-3-karbonsäure einen Farbstoff erhält, dessen Magnesium-, Mangan-, Strontium-, Barium- und insbesondere Kalziumsalz sich durch eine schön violette Nuance bei vorzüglichen Echtheitseigenschaften   auszeichnet,  
Die Darstellung   des neuen   Farbstoffes bzw. der neuen   Faibiacke geschieht xum   Beispiel wie folgt :
Die in üblicher Weise aus 245 kg 1. 2-naphtylaminsulfosaurem Natrium hergestellte Diazoverbindung lässt man in eine mittels 380 kg Natronlauge von 40    Be : und   60 kg Soda hergestellte wässrige Lösung von 190 kg 2-Naphtol-3-karbonsäure einlaufen. Die Kupplung geht rasch vor sich. 



   Zur Herstellung der Farblacke verfährt man weiter z. B. in folgender Weise :
600 kg einer 20%igen Paste des neuen Farbstoffes werden unter Zusatz von Türkischrotöl mit Wasser tüchtig verrührt. Hiezu lässt man unter   Umrühren   eine entsprechende Menge des lackbildenden, in Wasser gelösten Salzes, z. B. etwa 80 kg Kalziumchlorid, zulaufen. Die Masse wird noch solange erhitzt, bis die Umsetzung vollendet ist. 



  Es ist selbstverständlich, dass die Kupplung zum Farbstoff und dessen Überführung in den Farblack auch in einer Operation ausgeführt werden können. 

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



   <Desc / Clms Page number 1>
 



  Process for the preparation of a monoazo dye which is particularly suitable for the production of violet colored lacquer.



   It has been found that by combining the diazo compound from 1-naphthylamine-2-sulfonic acid with 2-naphthol-3-carboxylic acid, a dye is obtained whose magnesium, manganese, strontium, barium and, in particular, calcium salt has a beautiful purple color Nuance distinguishes itself with excellent fastness properties,
The representation of the new dye or the new faibal corner is done, for example, as follows:
The diazo compound, prepared in the usual way from 245 kg of 1,2-naphthylaminesulfonic acid sodium, is allowed to run into an aqueous solution of 190 kg of 2-naphthol-3-carboxylic acid prepared using 380 kg of 40 Be: sodium hydroxide solution and 60 kg of soda. The coupling is quick.



   To produce the color varnishes, continue z. B. in the following way:
600 kg of a 20% paste of the new dye are thoroughly stirred with water with the addition of Turkish red oil. For this purpose, while stirring, a corresponding amount of the lacquer-forming salt dissolved in water, e.g. B. about 80 kg of calcium chloride. The mass is heated until the reaction is complete.



  It goes without saying that the coupling to the dye and its conversion into the color lake can also be carried out in one operation.

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

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Darstellung eines besonders für die Herstellung violetter Farblacke geeigneten Monoazofarbstoffes, dadurch gekennzeichnet, dass man l-Diazonaphtalin-2-sulfo- säure mit 2-Naphtol-3-karbonsäure kombiniert. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the preparation of a monoazo dye which is particularly suitable for the production of violet colored lakes, characterized in that 1-diazonaphthalene-2-sulphonic acid is combined with 2-naphthol-3-carboxylic acid. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT56745D 1910-12-02 1911-05-29 Process for the preparation of a monoazo dye which is particularly suitable for the production of violet colored lakes. AT56745B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE56745X 1910-12-02

Publications (1)

Publication Number Publication Date
AT56745B true AT56745B (en) 1912-12-10

Family

ID=5628887

Family Applications (1)

Application Number Title Priority Date Filing Date
AT56745D AT56745B (en) 1910-12-02 1911-05-29 Process for the preparation of a monoazo dye which is particularly suitable for the production of violet colored lakes.

Country Status (1)

Country Link
AT (1) AT56745B (en)

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