DE747247C - Manufacture of colored lacquers - Google Patents

Manufacture of colored lacquers

Info

Publication number
DE747247C
DE747247C DES147279D DES0147279D DE747247C DE 747247 C DE747247 C DE 747247C DE S147279 D DES147279 D DE S147279D DE S0147279 D DES0147279 D DE S0147279D DE 747247 C DE747247 C DE 747247C
Authority
DE
Germany
Prior art keywords
manufacture
basic dyes
colored lacquers
lacquers
colored
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
DES147279D
Other languages
German (de)
Inventor
Dr Elisabeth Huezel
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.)
Siegle & Co G GmbH
Original Assignee
Siegle & Co G GmbH
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 Siegle & Co G GmbH filed Critical Siegle & Co G GmbH
Priority to DES147279D priority Critical patent/DE747247C/en
Application granted granted Critical
Publication of DE747247C publication Critical patent/DE747247C/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
    • C09B69/00—Dyes not provided for by a single group of this subclass
    • C09B69/02—Dyestuff salts, e.g. salts of acid dyes with basic dyes
    • C09B69/06—Dyestuff salts, e.g. salts of acid dyes with basic dyes of cationic dyes with organic acids or with inorganic complex acids

Description

Herstellung von Farblacken Bekannt ist ein Verfahren zur Herstellung von Farblacken, darin bestehend, daß man basische Farbstoffe mit löslichen Ferrocyaniden und Kupfersalzen umsetzt und die so erhaltene Cupriverbindung durch Reduktionsmittel in die Cuproverbindung überführt. Zur Herstellung dieser Fablacke sind also zwei Arbeitsgänge nötig, ,die Fällung der Cupriverbindung und die Reduktion derselben zur Cuproverbindung. Wie eine Nacharbeitung dieses Verfahrens ergeben hat, ist die Durchführung der Reduktion mit großen Schwierigkeiten verbunden. Der Erfinder dieses bekannten Verfahrens gab zudem selbst an, daß die so erhaltenen Farblacke an der Luft durch Oxydation wieder einen Teil ihrer Lebhaftigkeit einbüßen; auch sei es nicht gelungen, dass Kupfer durch andere Metalle zu ersetzen.Production of colored lacquers A process for production is known of color lakes, consisting in the fact that basic dyes with soluble ferrocyanides and converts copper salts and the cupri compound thus obtained by reducing agents converted into the cupro compound. So there are two to make these tints Operations necessary, the precipitation of the cupric compound and the reduction of the same to the cupro connection. As a reworking of this procedure has shown, the Carrying out the reduction is associated with great difficulty. The inventor of this known method also stated itself that the color lakes thus obtained on the Air again loses part of its liveliness through oxidation; also be it failed to replace copper with other metals.

Demgegenüber wurde nun gefunden, daß man in leichter Weisse und mit Vorteil das Zinlklaliumferrocyanid zum Fällen basischer Farbstoffe benutzen kann. Die auf diese Weise erhaltenen Farblacke zeichnen sich gegenüber den nach dem bekannten Verfahren hergestellten durch größere Reinheit und Leuchtkraft aus. Ihre Darstellung ist gegenüber den bekannten Cuprokaliumferrocyanidverbindungen bedeutend einfacher, da Zink in Verbindungen grundsätzlich nur zweiwertig auftreten kann, eine nachträgliche Recuktion sich also erübrigt. Beispiel Zu einer wäßrigen Lösung von I2 Gewichtsteilen gelben Blutlaugensalzes (K4Fe (CN)6) werden 4 Gewichtsteile Rhodanin 6 G extra gegeben. Die entstehende Lösung wird bei 7o° mit Io Gewichtsteilen Zinksulfat (ZnS 04) versetzt. Nach i@@stündigem Erwärmen auf ;o° wird der ausgefällte Farblack abgeisaugt, gewaschen und getrocknet.In contrast, it has now been found that you can be in light white and with Advantage that tinl potassium ferrocyanide can be used to precipitate basic dyes. The color lakes obtained in this way are distinguished from those according to the known Process produced by greater purity and luminosity. Your representation is significantly easier than the known cupropotassium ferrocyanide compounds, since zinc can basically only occur in two-valent form in compounds, a subsequent one Recuction is therefore unnecessary. Example For an aqueous solution of 12 parts by weight yellow blood liquor salt (K4Fe (CN) 6) are given 4 parts by weight of rhodanine 6 G extra. The resulting solution is mixed with 10 parts by weight of zinc sulfate (ZnS 04) at 70 °. After warming up for i @@ hours, the precipitated colored varnish is filtered off with suction and washed and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Farblacken basischer Farbstoffe, dadurch gelennzeichnet, daß null basische Farbstoffe nit Zinkkaliuferroceanicl umsetzt. Zur Abgrenzung des Anneldungsgegenstandes vorn Stand der Technik ist im Erteilungsverfahren folgnde Druckschrift in Betracht gzogen worden: detts,che Patentashritt ......Nr.657 740.PATENT CLAIM: Process for the production of color lacquers more basic Dyes, characterized in that zero basic dyes nit Zinkkaliuferroceanicl implements. To distinguish the subject of the notification from the state of the art, im The following publication has been considered for the granting procedure: detts, che Patentashritt ...... number 657 740.
DES147279D 1941-10-08 1941-10-08 Manufacture of colored lacquers Expired DE747247C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES147279D DE747247C (en) 1941-10-08 1941-10-08 Manufacture of colored lacquers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES147279D DE747247C (en) 1941-10-08 1941-10-08 Manufacture of colored lacquers

Publications (1)

Publication Number Publication Date
DE747247C true DE747247C (en) 1944-09-15

Family

ID=7542452

Family Applications (1)

Application Number Title Priority Date Filing Date
DES147279D Expired DE747247C (en) 1941-10-08 1941-10-08 Manufacture of colored lacquers

Country Status (1)

Country Link
DE (1) DE747247C (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE657740C (en) * 1931-02-07 1938-03-11 Mario Michels Production of lightfast colored lacquers

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE657740C (en) * 1931-02-07 1938-03-11 Mario Michels Production of lightfast colored lacquers

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