DE439974C - Production of weather-resistant lithopons - Google Patents

Production of weather-resistant lithopons

Info

Publication number
DE439974C
DE439974C DEM80084D DEM0080084D DE439974C DE 439974 C DE439974 C DE 439974C DE M80084 D DEM80084 D DE M80084D DE M0080084 D DEM0080084 D DE M0080084D DE 439974 C DE439974 C DE 439974C
Authority
DE
Germany
Prior art keywords
lithopons
production
air
weather
resistant
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
DEM80084D
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEM80084D priority Critical patent/DE439974C/en
Application granted granted Critical
Publication of DE439974C publication Critical patent/DE439974C/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
    • C09C—TREATMENT 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
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/04—Compounds of zinc
    • C09C1/06—Lithopone

Description

Herstellung wetterbeständigen Lithopons. Lithopon (BaSo4 -@- ZiiS) ist ein ausgezeichneter Farbstoff zum Anstrich von Innenflächen, doch haben alle Verbesserungen im Herstellungsverfahren nicht dazu geführt, diesen Farbstoff für den Anstrich von Außenwänden geeignet zu machen, und zwar ist dies darauf zurückzuführen, daß das Zinksulfid durch die Wirkung des Luftsauerstoffes, besonders in einer feuchten Atmosphäre, zu i Zinksulfat oxydiert wird. Das Zinksulfat löst i sich in der Feuchtigkeit der Atmosphäre auf, wird von der aufgetragenen Fläche abgewaschen, wodurch ein frühzeitiges Verschwinden der Farbe verursacht wird.Production of weatherproof lithopons. Lithopon (BaSo4 - @ - ZiiS) is an excellent dye for painting interior surfaces, but all have Improvements in the manufacturing process have not led to this dye being used for to make the painting of external walls suitable, and this is due to that the zinc sulfide by the action of the oxygen in the air, especially in a humid one Atmosphere to which zinc sulfate is oxidized. The zinc sulfate dissolves in the moisture the atmosphere is washed off the applied area, creating an early Disappearance of color is caused.

Gemäß der Erfindung wird ein Lithopon geschaffen, welches diesen Übelstand nicht zeigt, so daß es auch für den Anstrich von Außenwänden benutzt werden kann und gleichzeitig dichter ist als in bekannter Weise hergestelltes Lithopon. Zu diesem Zwecke wird in bekannter Weise hergestelltes Rohlithopon getrocknet, ohne Luftzutritt einige Minuten bis zu einer Temperatur von 70o° C erhitzt und während des Erhitzens dauernd I geschüttelt. Hierauf läßt man den heißen Farbstoff, ohne ihn mit atmosphärischer Luft zusammenzubringen, in die kalte, wäßrige Lösung eines Salzes fallen, welches, wie Barium-oder Strontiumsulfid, durch Erhitzen in einer oxydierenden Atmosphäre in eine in Wasser unlösliche Verbindung verwandelt wird. Der mit der Lösung dieses Salzes getränkte Farbstoff wird abgepreßt und vorsichtig getrocknet. Darauf wird der Stoff wieder in den Glühraum geschafft, auf eine . Temperatur von nicht unter ;7oo° erhitzt und unter Schütteln der Einwirkung der Luft ausgesetzt. Ist die Oxydation des beispielsweise angeführten Bariumsulfids, welches nach dem ersten Abschrecken alle Teilchen des Gutes überzogen hat, beendet, so wird der Farbstoff entweder in kaltem Wasser abgeschreckt und naß vermahlen und getrocknet, oder aber an der Luft abgekühlt und trocken vermahlen.According to the invention, a lithopone is created which addresses this drawback does not show, so that it can also be used for painting exterior walls and at the same time it is denser than lithopone produced in a known way. To this For this purpose, raw lithopone produced in a known manner is dried without the admission of air heated for a few minutes to a temperature of 70o ° C and while heating I shaken continuously. The hot dye is then left without it with atmospheric To bring together air, fall into the cold, aqueous solution of a salt, which, such as barium or strontium sulfide, by heating in an oxidizing atmosphere is transformed into a compound insoluble in water. The one with the solution to this Salt soaked dye is squeezed out and carefully dried. On it will the substance was brought back into the annealing room on a. Temperature of not below ; Heated to 700 ° and exposed to the action of the air while shaking. Is the oxidation of the barium sulfide mentioned for example, which after the first quenching has finished covering all the particles of the good, the dye will either be in Quenched in cold water and wet ground and dried, or in the air cooled and grind dry.

Auch fertiges Lithopon kann in gleicher Weise mit der wäßrigen Lösung eines zu einer unlöslichen - 11,Terbindung oxv Bierbaren Salzes behandelt, getrocknet, geröstet, gekühlt und vermahlen werden.Finished Lithopon can also be used in the same way with the aqueous solution a salt treated to an insoluble - 11, binding oxv beer, dried, roasted, chilled and ground.

Gemäß der vorliegenden Erfindung wird also das nach bisher bekannten Verfahren hergestellte Lithopon mit einer Schutzschicht überzogen, um es wetterbeständig zu machen.Thus, according to the present invention, that according to previously known Process made lithopon coated with a protective layer to make it weather resistant close.

Claims (1)

PATENTANSPRÜCHE: r. Herstellung wetterbeständigen Lithopons, dadurch gekennzeichnet, daß in bekannter Weise hergestelltes Lithopon mit einer Schutzschicht überzogen wird. -2. Herstellung wetterbeständigen Lithopons gemäß Anspruch r, dadurch gekennzeichnet, daß nach bekannten Verfahren hergestelltes und unter Luftabschluß geglühtes Lithopon in der Lösung eines zu einer in Wasser unlöslichen Verbindung oxydierbaren Salzes, z. B. Barium- oder Strontiumsulfid, abgeschreckt, abgepreßt, unter Luftabschluß getrocknet und dann unter Luftzutritt geglüht wird.PATENT CLAIMS: r. Production of weatherproof lithopons, thereby characterized in that lithopone produced in a known manner with a protective layer is covered. -2. Production of weather-resistant lithopons according to claim r, characterized in that characterized in that produced by known processes and sealed off from air Annealed lithopone in the solution of a compound that is insoluble in water oxidizable salt, e.g. B. barium or strontium sulfide, quenched, pressed, is dried in the absence of air and then calcined with admission of air.
DEM80084D 1922-12-29 1922-12-29 Production of weather-resistant lithopons Expired DE439974C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM80084D DE439974C (en) 1922-12-29 1922-12-29 Production of weather-resistant lithopons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM80084D DE439974C (en) 1922-12-29 1922-12-29 Production of weather-resistant lithopons

Publications (1)

Publication Number Publication Date
DE439974C true DE439974C (en) 1927-01-26

Family

ID=7318612

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM80084D Expired DE439974C (en) 1922-12-29 1922-12-29 Production of weather-resistant lithopons

Country Status (1)

Country Link
DE (1) DE439974C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046223B (en) * 1952-04-24 1958-12-11 Lithopone Kontor G M B H Process for the production of colored bodies, fillers and the like like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046223B (en) * 1952-04-24 1958-12-11 Lithopone Kontor G M B H Process for the production of colored bodies, fillers and the like like

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