DE647731C - Process for the production of green lead chromate colors from chrome yellow - Google Patents

Process for the production of green lead chromate colors from chrome yellow

Info

Publication number
DE647731C
DE647731C DEK128870D DEK0128870D DE647731C DE 647731 C DE647731 C DE 647731C DE K128870 D DEK128870 D DE K128870D DE K0128870 D DEK0128870 D DE K0128870D DE 647731 C DE647731 C DE 647731C
Authority
DE
Germany
Prior art keywords
chrome yellow
colors
production
lead chromate
green lead
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
DEK128870D
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 DEK128870D priority Critical patent/DE647731C/en
Application granted granted Critical
Publication of DE647731C publication Critical patent/DE647731C/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
    • C09C1/14—Compounds of lead
    • C09C1/20—Lead chromate

Description

Verfahren zur Herstellung von grünen Bleichromatfarben aus Chromgelben In der Patentschrift 625 202 ist ein Verfahren zur Herstellung von grünen Bleichromatfarben aus Chromgelben beschrieben, das darin besteht, daß man dieselben in Gegenwart von Säuren oder sauer reagierenden Salzen auf höhere Temperaturen erhitzt.Process for the production of green lead chromate paints from chrome yellow In the patent 625 202 there is a method for the production of green lead chromate colors described from chrome yellow, which consists in the fact that they are in the presence of Acids or acidic salts heated to higher temperatures.

Es wurde nun gefunden, daß man grüne Pigmente von besonders lebhaftem Farbton erhält, wenn man Mischungen von Chromgelb mit Borsäure und Bichromat erhitzt und das Glühprodukt zwecks Entfernung von löslichen Salzen mit Wasser auslaugt.It has now been found that green pigments are particularly vivid Color is obtained by heating mixtures of chrome yellow with boric acid and bichromate and leaching the glow product with water to remove soluble salts.

Ausführungsbeispiel Eine Lösung von 414 g Blei und 120 g Essigsäure in i o 1 Wasser wird mit einer Lösung von 15o g Natriumbichromat und 98 g Schwefelsäuremonohydrat in 5 1 Wasser gefällt. Das Chromgelb wird in üblicher Weise gewaschen und getrocknet. Zoo g des so hergestellten Chromgelbes werden mit 5o g Natriumbichromat und 1509 Borsäure gut vermischt. Die Mischung wird mit etwa 20 ccm Wasser genetzt und eine halbe Stunde auf 60o° C erhitzt. 1"Tach dem Erkalten wird mit Wasser ausgelaugt, getrocknet und gemahlen. Man erhält ein feuriges Grün von hoher Lichtechtheit.Exemplary embodiment A solution of 414 g of lead and 120 g of acetic acid in 10 l of water is precipitated with a solution of 150 g of sodium dichromate and 98 g of sulfuric acid monohydrate in 5 l of water. The chrome yellow is washed and dried in the usual way. Zoo g of the chrome yellow thus produced are mixed well with 50 g of sodium dichromate and 1509 boric acid. The mixture is wetted with about 20 ccm of water and heated to 60o ° C for half an hour. 1 "After cooling, it is leached with water, dried and ground. A fiery green of high lightfastness is obtained.

Claims (1)

PAT1sN TANSYILUCII Weitere Ausbildung des Verfahrens zur Herstellung von grünen Bleichromatfarben durch Erhitzung von Chromgelben auf höhere Temperaturen in Gegenwart von sauer wirkenden Salzen oder Säuren gemäß Patent 625 202, dadurch gekennzeichnet, daß dem zu glühenden Chromgelb Alkalibichromat und Borsäure zugesetzt und das Glühprodukt mit Wasser ausgelaugt und getrocknet wird.PAT1sN TANSYILUCII Further training of the manufacturing process of green lead chromate colors by heating chrome yellows to higher temperatures in the presence of acidic salts or acids according to patent 625 202, thereby characterized in that alkali dichromate and boric acid are added to the chrome yellow to be glowed and the annealing product is leached with water and dried.
DEK128870D 1933-02-02 1933-02-02 Process for the production of green lead chromate colors from chrome yellow Expired DE647731C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK128870D DE647731C (en) 1933-02-02 1933-02-02 Process for the production of green lead chromate colors from chrome yellow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK128870D DE647731C (en) 1933-02-02 1933-02-02 Process for the production of green lead chromate colors from chrome yellow

Publications (1)

Publication Number Publication Date
DE647731C true DE647731C (en) 1937-07-12

Family

ID=7246723

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK128870D Expired DE647731C (en) 1933-02-02 1933-02-02 Process for the production of green lead chromate colors from chrome yellow

Country Status (1)

Country Link
DE (1) DE647731C (en)

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