DE350322C - Process for the production of a green dye suitable for color lacquer preparation - Google Patents

Process for the production of a green dye suitable for color lacquer preparation

Info

Publication number
DE350322C
DE350322C DE1919350322D DE350322DD DE350322C DE 350322 C DE350322 C DE 350322C DE 1919350322 D DE1919350322 D DE 1919350322D DE 350322D D DE350322D D DE 350322DD DE 350322 C DE350322 C DE 350322C
Authority
DE
Germany
Prior art keywords
production
green dye
color lacquer
lacquer preparation
dye suitable
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DE1919350322D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Application granted granted Critical
Publication of DE350322C publication Critical patent/DE350322C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B51/00—Nitro or nitroso dyes
    • C09B51/005—Nitroso dyes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Paints Or Removers (AREA)

Description

Verfahren zur Herstellung eines zur Farblackbereitung geeigneten grünen Farbstoffes. Es wurde, gefunden, daß man einen Farbstoff erhält, der hervorragend zur Darstellung grüner Farblacke geeignet ist, wenn man die Nitrosoverbindung der 2-Oxynaphtalin-3-carbonsäure (ß-Oxynaphtoesäure vom Schmelzpunkt 2=6°) mit Eisensalzen behandelt. Man erhält so einen dunkelgrünen, in Wasser ziemlich schwer löslichen Farbstoff, der -sich mit Metallsalzen nach der üblichen Methode unter Bildung vollkommen farbloser -Abwässer in Farblackeüberführenläßt. DieerhaltenenLacke haben vorzügliche Eigenschaften, insbesondere sind sie durch ausgezeichnete Lichtechtheit und Echtheit gegen alkalische Leimfarben wertvoll. Sie lassen sich sowohl zu Tapetenfarben wie zu lithographischen Druckfarben, Öl- und anderen Farben verwenden. Auch ist der Farbstoff zum Färben von Papier in der Masse geeignet.Process for the production of a green suitable for color lacquer preparation Dye. It has been found that a dye which is excellent can be obtained is suitable for the representation of green lakes, if one uses the nitroso compound of the 2-oxynaphthalene-3-carboxylic acid (ß-oxynaphthoic acid, melting point 2 = 6 °) with iron salts treated. This gives a dark green one that is rather sparingly soluble in water Dye which -s itself with metal salts by the usual method with formation completely allows colorless waste water to be converted into colored lacquers. The varnishes obtained have excellent ones Properties, in particular, they are excellent lightfastness and fastness valuable against alkaline glue paints. They can be used both with wallpaper colors like to use with lithographic inks, oils and other paints. Also is that Dye suitable for dyeing paper in bulk.

Beispiel: 232,5 Teile einer -37,5 prozentigen Paste von Nitroso-,ß-oxynaphtoesäure werden in 2ooo Teilen Wasser und 85 Teilen Natronlauge von 50'B6 bei 50' gelöst. Die erkaltete Lösung wird durch ein unter die Flüssigkeitsoberfläche reichendes Rohr mit einer Lösung von 44 Teilen kristallisiertem Eisenvitriol in 25o Teilen Wasser und 3 ccm Bisulfitlauge unter lebhaftem Rühren versetzt, noch kurze Zeit weiter gerührt und alsdann auf 8o' erhitzt. Man filtriert dann sofort noch heiß von etwas abgeschiedenem Eisenhydroxyd ab, wäscht den Filterrückstand mit etwa Zoo Teilen heißem Wasser und bringt den Farbstoff aus dem Filtrat durch Zugabe von zoo Teilen festem Kochsalz zur Abscheidung. Nach dem Abkühlen wird er abfiltriert und mit sehr verdünnter, etwa 3prozentiger Kochsalzlösung gewaschen.Example: 232.5 parts of a -37.5 percent paste of nitroso, ß-oxynaphthoic acid are dissolved in 2,000 parts of water and 85 parts of sodium hydroxide solution at 50'B6 at 50 ' . The cooled solution is treated with a solution of 44 parts of crystallized iron vitriol in 250 parts of water and 3 cc of bisulfite lye through a tube reaching below the surface of the liquid, stirring vigorously, stirring continued for a short time and then heated to 80 '. Some iron hydroxide that has separated out is then filtered off immediately while still hot, the filter residue is washed with about zoo parts of hot water and the dye is separated from the filtrate by adding zoo parts of solid sodium chloride. After cooling, it is filtered off and washed with very dilute, about 3 percent saline solution.

Statt des Eisenvitriols können auch andere Eisensalze, auch - wenn auch weniger vorteilhaft - Ferrisalze verwendet werden.Instead of the iron vitriol, other iron salts can also be used, even if also less beneficial - ferric salts can be used.

Claims (1)

PATENT-ANSPRUCIZI: Verfahren zur Darstellung eines zur Farblackbereitung geeigneten grünen Farbstoffes, dadurch gekennzeichnet, daß man die Nitrosoverbindung der 2-Oxynaphthalin-3-carbonsäure (ß-Oxynaphtoesäure vom Schmelzpunkt 2z6°) mit Eisensalzen behandelt.PATENT-ANSPRUCIZI: Process for the representation of a color lacquer preparation suitable green dye, characterized in that the nitroso compound of 2-oxynaphthalene-3-carboxylic acid (ß-oxynaphthoic acid with a melting point of 2z6 °) Treated iron salts.
DE1919350322D 1919-09-09 1919-09-09 Process for the production of a green dye suitable for color lacquer preparation Expired DE350322C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE350322T 1919-09-09

Publications (1)

Publication Number Publication Date
DE350322C true DE350322C (en) 1922-03-17

Family

ID=6261261

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1919350322D Expired DE350322C (en) 1919-09-09 1919-09-09 Process for the production of a green dye suitable for color lacquer preparation

Country Status (1)

Country Link
DE (1) DE350322C (en)

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