AT49484B - Process for the representation of lightfast colored lacquers. - Google Patents

Process for the representation of lightfast colored lacquers.

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Publication number
AT49484B
AT49484B AT49484DA AT49484B AT 49484 B AT49484 B AT 49484B AT 49484D A AT49484D A AT 49484DA AT 49484 B AT49484 B AT 49484B
Authority
AT
Austria
Prior art keywords
lightfast
representation
colored
colored lacquers
parts
Prior art date
Application number
Other languages
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 AT49484B publication Critical patent/AT49484B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung von lichtechten Farblacken. 



   In dem deutschen Reichspatent   167497, ist   die Herstellung   lichtechter   roter Farblacke aus den Azofarbstoffen aus o-Anisidin oder o-Toluidin und   1-Naphtol-5-sulfosäure   beschrieben. 



   Es wurde nun die überraschende Beobachtung gemacht, dass man durch Ersatz dieser Farbstoffe durch   denjenigen aus &alpha;-Naphtylamin   und 1-Naphtol-5-sulfosäure ebenfalls zu lichtechten Lacken gelangt, die aber zum Unterschied der Produkte des genannten Patents nicht rot sind,   sondern wertvolle Bordeau@nuancen besitzen, ölunlöslich   sind und eine   Deckkraft aufweisen,   wie sie die bisher bekannten Bordeauxlacke nicht zeigen. 



   Beispiel. 



     22#4 Teile 1-Naphtol-5-sulfosäure werden   in Wasser unter   Zusatz von 15 Teilen   kalzinierter Soda gelöst. Dann wird unter Umrühren eine   Auflösung von 11#6 Teilen Chler-   baryum zugefügt und   schliesslich   in der Kälte allmählich die aus   17 Teilen sa) zsaure) n     a-Naphtylamin, 22-2   Teilen roher Salzsäure und 6'5 Teilen Natriumnitrit gewonnene   Uiaxo-   lösung eingetragen. Nach zwölfstündigem   Ri'hren in   der Kälte wird der gebildete Lack ab- 
 EMI1.1 
 

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



   <Desc / Clms Page number 1>
 



  Process for the representation of lightfast colored lacquers.



   In the German imperial patent 167497, the production of lightfast red colored lakes from the azo dyes from o-anisidine or o-toluidine and 1-naphthol-5-sulfonic acid is described.



   The surprising observation has now been made that by replacing these dyes with those made from α-naphthylamine and 1-naphthol-5-sulfonic acid, lightfast varnishes are also obtained, which, however, unlike the products of the cited patent, are not red but valuable Have Bordeau @ nuances, are oil-insoluble and have a covering power that the previously known Bordeaux lacquers do not show.



   Example.



     22 # 4 parts of 1-naphthol-5-sulfonic acid are dissolved in water with the addition of 15 parts of calcined soda. Then, with stirring, a solution of 11.6 parts of chlorobaryum is added and finally the uiaxo solution obtained from 17 parts of acidic acid naphthylamine, 22-2 parts of crude hydrochloric acid and 6.5 parts of sodium nitrite gradually in the cold registered. After stirring in the cold for twelve hours, the paint that has formed is removed.
 EMI1.1
 

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

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Darstellung von lichtechten Farblacken, dadurch gekennzeichnet, dass man den Monoazofarbstoff aus &alpha;-Naphtylamin und der 1-Naphtol-5-sulfosäure nach den bei der Pigmentfarbendarstellung üblichen Methoden in Farblacke überführt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the preparation of lightfast colored lakes, characterized in that the monoazo dye composed of α-naphthylamine and 1-naphthol-5-sulfonic acid is converted into colored lakes by the methods customary for pigment color representation. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT49484D 1909-08-24 1910-07-22 Process for the representation of lightfast colored lacquers. AT49484B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE49484X 1909-08-24

Publications (1)

Publication Number Publication Date
AT49484B true AT49484B (en) 1911-08-25

Family

ID=5626329

Family Applications (1)

Application Number Title Priority Date Filing Date
AT49484D AT49484B (en) 1909-08-24 1910-07-22 Process for the representation of lightfast colored lacquers.

Country Status (1)

Country Link
AT (1) AT49484B (en)

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