DE604226C - Process for the production of cadmium sulfide paints - Google Patents

Process for the production of cadmium sulfide paints

Info

Publication number
DE604226C
DE604226C DEK127472D DEK0127472D DE604226C DE 604226 C DE604226 C DE 604226C DE K127472 D DEK127472 D DE K127472D DE K0127472 D DEK0127472 D DE K0127472D DE 604226 C DE604226 C DE 604226C
Authority
DE
Germany
Prior art keywords
paints
cadmium
production
cadmium sulfide
mixture
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
DEK127472D
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.)
Kali Chemie AG
Original Assignee
Kali Chemie 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 Kali Chemie AG filed Critical Kali Chemie AG
Priority to DEK127472D priority Critical patent/DE604226C/en
Application granted granted Critical
Publication of DE604226C publication Critical patent/DE604226C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/10Compounds of cadmium
    • C09C1/12Cadmium sulfoselenide

Description

Verfahren zur Herstellung von Cadmiumsulfidfarben Cadmiumfarben, wie Cadmiumgelb@e oder Cadmiumrote, werden bekanntlich in der Weise hergestellt, daß man gefälltes Cadmiumsulfid oder Cadmiumcarbonat in Mischung mit Schwefel bzw. Schwefel und Selen bei Temperaturen von etwa 5oo ° C brennt. Die Mischung kann auch noch andere Stoffe, wie Zinkverbindungen, Bariumsulfat, Tonerdehydrat o. dgl. enthalten.Process for the production of cadmium sulfide paints Cadmium paints, such as Cadmium yellow @ e or cadmium red are known to be produced in such a way that precipitated cadmium sulfide or cadmium carbonate mixed with sulfur or sulfur and selenium burns at temperatures of about 500 ° C. The mixture can also be used Contain other substances such as zinc compounds, barium sulfate, alumina hydrate or the like.

Es wurde nun gefunden, daß man die Earbkraft der durch Brennen erhaltenen Cadmiumfarben erhöhen kann, wenn man die zu brennende Mischung vor dem Brennen durch Anwendung von Druck verdichtet und zweckmäßig in stückige oder körnige Form überführt. Der Effekt des Verfahrens läßtsich leicht nachweisen, wenn man die so hergestellten Farbken mit Zinkweiß ausmischt und sie mit den entsprechenden nicht verdichteten ausgemischten Farben vergleicht.It has now been found that the earbility obtained by firing Cadmium colors can increase if you add the mixture to be fired before firing through Application of pressure compacted and expediently converted into lumpy or granular form. The effect of the process can easily be demonstrated when one looks at the thus produced Mixing colors with zinc white and combining them with the corresponding non-compacted ones compares mixed colors.

An und für sich ist es bekannt, bei Brennprozessen das zu brennende Material anstatt in lockerer Form auch gegebenenfalls in stückiger Form zu brennen. Bei der Herstellung von Cadmiumfarben hat man jedoch die Farben bisher nur im lockeren Zustand gebrannt. Erst die Beobachtung, daß die nach dem vorliegenden Verfahren behandelten Cadmiumfarben beim Ausmischen mit anderen Farben einen besonders starken Farbton aufweisen, hat zu der Feststellung geführt, daß das Verdichten der Farben vor dem Brennen ein geeignetes Mittel ist, um ihre Farbkraft wesentlich zu erhöhen. Ausf ührungsbeispiele i. Eine Mischung, bestehend aus 400 9 CdC03, 8o g Schwefel, 2o g Selen, wurde in einer hydraulischen Presse unter Anwendung eines Druckes von 5o atü zu einem Körper von zylindrischer Form gepreßt. Der erhaltene Preßling wurde in einem geschlossenen Tiegelofen bei einer Temperatur von Soobis 6oo° C a Stunden gebrannt. Es wurde ein Cadmiumrot erhalten, das eine bedeutend höhere Farbkraft aufwies als das durch Brennen der pulverförmigen Mischung erhaltene Produkt, wie die Prüfung der Produkte durch Ausmischung mit Zinkweiß (i: i o) zeigte.In and of itself, it is known that the burning process is the one to be burned Burning material in lump form instead of in loose form. In the production of cadmium paints, however, the paints have so far only been seen in a relaxed manner Burned condition. It was not until the observation that, according to the present procedure treated cadmium paints are particularly strong when mixed with other paints Tint has led to the discovery that the densification of the colors before firing is a suitable means to increase the color strength significantly. Execution examples i. A mixture consisting of 400 9 CdC03, 8o g sulfur, 2o g selenium, was in a hydraulic press using a pressure of 5o atü pressed into a body of cylindrical shape. The compact obtained was in a closed crucible furnace at a temperature of Soob to 600 ° C for hours burned. A cadmium red was obtained which had a significantly higher color strength as the product obtained by firing the powdery mixture as the testing of the products by mixing with zinc white (i: i o) showed.

z. 153 g Cadmiumcarbonat, 156 g Blanc fixe und ¢a g Schwefel wurden gemischt, die Mischung mit Wasser etwas angefeuchtet und unter einem Druck von 5o atü zu einem Körper zusammengepreßt. Der erhaltene Preßling wurde in einem geschlossenen Tiegelofen bei einer Temperatur von 5oobis 6oo ° C a Stunden lang gebrannt. Es wurde ein Cadmiumgelb erhalten, das eine bedeutend höhere Farbkraft aufwies als das durch Brennen der pulverförmigen Mischung erhaltene Produkt, wie die Prüfung der Produkte durch Ausmischen mit Zinkweiß (i: i o) zeigte.z. 153 g of cadmium carbonate, 156 g of Blanc fixe and ¢ a g of sulfur were mixed, the mixture slightly moistened with water and under a pressure of 5o atü compressed into a body. The compact obtained was in a closed Crucible furnace fired at a temperature of 50 to 600 ° C for hours. It was obtained a cadmium yellow, which had a significantly higher color strength than that by Firing the powdered mixture obtained product, such as testing the products by mixing with zinc white (i: i o) showed.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Cadmiumsulidfarben durch Brennen einer Mischung von gefälltem Cadmiumsulfid bzw. Cadmiumcarbonat mit Schwefel bzw. Schwefel und Selen, dadurch gekennzeichnet, daß man diese Mischung vor dem Brennprozeß durch Anwendung von Druck verdichtet, z. B. in körnige oder stückige Form. PATENT CLAIM: Process for the production of cadmium sulide paints by firing a mixture of precipitated cadmium sulfide or cadmium carbonate with sulfur or sulfur and selenium, characterized in that this mixture is compressed by applying pressure before the firing process, e.g. B. in granular or lumpy form.
DEK127472D 1932-10-23 1932-10-23 Process for the production of cadmium sulfide paints Expired DE604226C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK127472D DE604226C (en) 1932-10-23 1932-10-23 Process for the production of cadmium sulfide paints

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK127472D DE604226C (en) 1932-10-23 1932-10-23 Process for the production of cadmium sulfide paints

Publications (1)

Publication Number Publication Date
DE604226C true DE604226C (en) 1934-10-17

Family

ID=7246377

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK127472D Expired DE604226C (en) 1932-10-23 1932-10-23 Process for the production of cadmium sulfide paints

Country Status (1)

Country Link
DE (1) DE604226C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1013020B (en) * 1954-07-15 1957-08-01 Bayer Ag Production of cadmium sulphide yellow pigments

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1013020B (en) * 1954-07-15 1957-08-01 Bayer Ag Production of cadmium sulphide yellow pigments
US2819175A (en) * 1954-07-15 1958-01-07 Bayer Ag New cadmium sulfide yellow pigments

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