DE747780C - Manufacture of anti-corrosive pigments - Google Patents

Manufacture of anti-corrosive pigments

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Publication number
DE747780C
DE747780C DES135527D DES0135527D DE747780C DE 747780 C DE747780 C DE 747780C DE S135527 D DES135527 D DE S135527D DE S0135527 D DES0135527 D DE S0135527D DE 747780 C DE747780 C DE 747780C
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Germany
Prior art keywords
water
lines
line
pigments
manufacture
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
DES135527D
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German (de)
Inventor
Dr Hans Wagner
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.)
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Publication date
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Priority to DES135527D priority Critical patent/DE747780C/en
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Publication of DE747780C publication Critical patent/DE747780C/en
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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
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/06—Treatment with inorganic compounds
    • C09C3/063—Coating
    • 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
    • C09C1/34—Compounds of chromium

Description

Herstellung von Korrosionsschutzpigmenten Es ist bekannt, Chromate wegen ihrer passivierenden Wirkung zum Rostschutz zu verwenden. Man gebraucht hierzu vornehmlich wasserunflöslidhe Chromate, wie Bleichromat, oder auch solche von mittlerer Wasserlöslichkeit, wie Zinkchromat. Beiden ersten ist die passivierende Wirkung durchaus ungenügend, bei den letzteren wird die Widerstandsfähigteeit des Films stark 'herabgesetzt, u.nd die Passivierungswirkung ist trotzdem nicht genügend. Man hat aus diesem Grunde auch die sehr wasserlöslichen Chromate der Alkaligruppe herarigezögen, die aber für sich allein gerade wegen der Wasserlöslichkeit durchaus ungenügend sind und die Filmeigenschaften erheblich verschlechtern. Man hat daher auch versucht, diese Chrornatedurch oberflächenaktive Stoffe zu binden; hierdurch wird zwar das System stabilisiert, aber durch den namhaften Gehalt an oberflächenaktiven Stoffen wieder in seiner Wasserfestigkeit beeinträchtigt.Production of anti-corrosive pigments Chromates are known to be used for rust protection because of its passivating effect. One needs for this mainly water-insoluble chromates, such as lead chromate, or also those of medium level Water solubility, such as zinc chromate. The first two is the passivating effect absolutely insufficient, in the case of the latter the resistance of the film becomes greatly reduced, and the passivation effect is still insufficient. For this reason one also has the very water-soluble chromates of the alkali group Herarigezögen, which, however, in and of themselves, precisely because of the water solubility are insufficient and significantly deteriorate the film properties. One therefore has also tries to bind these chromates with surfactants; through this the system is stabilized, but by the considerable amount of surface-active substances The water resistance of the fabrics is impaired again.

Es wurde nun gefunden, daß man Pigmente von vorzüglich passivierenden Eigenschaften .bei gleichzeitig sehr hoher Filmstabilität dadurch erhält, daß man auf inaktive Füllstoffe ein Verbindungsgemisch niederschlägt, das als Kationen mindestens zwei der Metalle Calciüm, Strontium, Barium, Magnesium, Zink und als Anionen Chromation und noch mindestens ein Anion der Kohlen-, Phosphor-, Kiesel-, Fluorwasserstoff- oder Borsäure enthält. Es handelt sich hierbei also grundsätzlich um andere Körper als -die bekannten Mischkristalle vom Typus MeX04. Man erhält vielmehr auf diese Weise neuartige, aus einem Erdalkali- (oder Magnesium- oder Zink-) Chromat und mindestens einem oberflächenaktiven Stoff (Carbonat, Phosphat, Silicat, Fluorid oder Borat eines anderen der genannten Metalle) b#--stehende Gemische, die auf einem inaktiven Füllstoff, z. B. Schwerspat, Ouarzmehl, Schiefermehl, Hammerschlag, niedergeschlagen sind. Beispiele i. i5 g Natriumbichromat in i5o g W2tsser und 28g Natriumcarbonat in 28o g Wasser werden finit Zoo g Schwerspat versetzt undmit einer Lösung von 50 g Barittmchlorid utid 23 g Calciumchlorid in 730 g Wasser kalt gefällt.It has now been found that pigments with excellent passivating properties and, at the same time, very high film stability are obtained by depositing a mixture of compounds on inactive fillers which contains at least two of the metals calcium, strontium, barium, magnesium and zinc as cations and chromate ion as anions and also contains at least one anion of hydrochloric, phosphoric, silicic, hydrofluoric or boric acid. It is basically a matter of other bodies than the known mixed crystals of the type MeX04. What is obtained in this way is novel mixtures of alkaline earth (or magnesium or zinc) chromate and at least one surface-active substance (carbonate, phosphate, silicate, fluoride or borate of another of the metals mentioned) an inactive filler, e.g. B. barite, ouarzmehl, slate flour, hammer blow, are deposited. Examples i. 15 g of sodium dichromate in 150 g of water and 28 g of sodium carbonate in 28o g of water are finely mixed with zoo g of barite and precipitated cold with a solution of 50 g of barite chloride and 23 g of calcium chloride in 730 g of water.

Man wäscht einmal aus und trocknet bei 5O°.It is washed out once and dried at 50 °.

Ausbeute: 250 g.Yield: 250 g.

2. 15 g.Natriumbichrom.at in i5o g Wasser (6o°) und 36g Dinatriumphosp'hat in 360 1-1 Wasser werden mit -2oo g Schiefermehl versetzt und heiß gefällt (7o°) mit einer Lösung von 30g Strontiumclilori(1 und 45 g Bariumchlorid in 750g Wasser.2. 15 g.Natriumbichrom.at offset in i5o g water (6o °) and 36g in 360 Dinatriumphosp'hat 1-1 with water -2oo g slate flour and hot like (7o °) with a solution of 30g Strontiumclilori (1 and 45 g barium chloride in 750 g water.

Weiterverarbeitung wie bei Beispiel i. Ausbeute: a30 g.Further processing as in example i. Yield: a30 g.

3. 1 5 g Natriumbichromat in i50 g Wasser und 42 g Natriumfluorid in 420.- Wasser werden mit i50 g geglühtem Hammerschlag vermischt und kalt gefällt mit einer Lösung von 4o g Calcittinchlorid und 6o g Bariumchlori(i in iooo g Wasser.3. 1 5 g of sodium dichromate in i50 g of water and 42 g of sodium fluoride in water are mixed with 420.- i50 g annealed hammer and cold precipitated with a solution of 4o g Calcittinchlorid and 6o g Bariumchlori (i iooo in g water.

Man kocht l;urz auf und verfährt dann wie bei Beispiel r.Boil it briefly and then proceed as in example r.

Ausbeute: 2-i0 g.Yield: 2-10 g.

.4. 15 g Natriumbichromat in 150 g Wasser und toag.Natriumsilicat (38 bis 40° Be) in ,20o g Wasser werden mit Zoo g säurefreiem Eisenoxyd.gemischt und kalt gefällt mit einer Lösung von 6o g Bariurtchlorid und 25 g Zinkchlorid in 85o g Wasser. .Nach der Fällung -,wird 5 Minuten gekocht und dann nach Beispiel i weiterverarbeitet. Ausbeute: ?72. g. 5. /40 g 30°loige Kalkmilch und 6; g Alti- niinitunsulfat in 67o g Wasser werden mit ioo g Ouarzinelil versetzt und heiß gefällt mit 30 g .Natriumbichromat in 300 g Wasser. .[an erhitzt die - unvollständige Fällung auf .etM-a 60'= und fällt finit 25g Bariumchlorirl in -2 5o g jVasser nach. Weiterverarbeitung wie bei Beispiel i. Ausbeute: 390 g. .4. 15 g of sodium dichromate in 150 g of water and toag. Sodium silicate (38 to 40 ° Be) in. 20o g of water are mixed with zoo g of acid-free iron oxide and precipitated cold with a solution of 60 g of barric chloride and 25 g of zinc chloride in 85o g of water. After the precipitation - it is boiled for 5 minutes and then further processed according to example i. Yield:? 7 2. g. 5. / 40 g 30 ° loige milk of lime and 6; g Alti- Niinitunsulfat in 67o g of water are with ioo g ouarzinelil added and hot like with 30 g of sodium dichromate in 300 g of water. . [on heats up the - incomplete precipitation .etM-a 60 '= and finitely falls 25g of barium chlorine into -2 5o g of water after. Further processing as in example i. Yield: 390 g.

Claims (2)

PATENTANSPRUCÜ Verfahren zur Herstellung von Korro- sionsscli:itzpigmenten, dadurch gekenn- zeicbn°t, (iaß auf inaktive Füllstoffe ein Verbindungsgemisch niedergeschlagen wird. (las als Kationen mindestens zwei der Metalle- Calcium, Strontium, Barium, Magnesium, Zink und als Anionen Chro- ination und noch mindestens ein Anion der Kohlen-. Phosphor-, Kiesel-, Fluorw-asser- stoff- oder Borsäure enthält.
Zur Abgrenzung des Anineldungsgegenstan(les vom Stand der Technik sind iin Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden: deutsche Patentschriften \r.574379 ()esonders Beispiel 2), 574 38o (besonders Beispiel 3), 575 537 (besonders Zeile 2o t1. ff.), 615 1.47 (besonders S. i, Zeile 38 und 39) britische Patentschrift .N r. 416 74d. (1)esOnders S. PATENT CLAIM Process for the production of corrosive sionsscli: itz pigments, thus identifiable show not, (iaß on inactive fillers Mixture of compounds knocked down will. (read at least two cations of metals - calcium, strontium, barium, Magnesium, zinc and, as anions, chromium ination and at least one anion of the Coal. Phosphorus, silica, fluorine water contains chemical or boric acid.
To distinguish the subject of the application from the state of the art, the following publications have been considered in the granting procedure: German patent specifications 574379 () especially example 2), 574 38o (especially example 3), 575 537 (especially line 2o t1. Ff .), 615 1.47 (especially p. I, lines 38 and 39) British patent specification. 416 74d. (1) esOnders S. 2. Zeile 38 bis 40) USA.-Patentschrift N r. 987 965 (besonders S. = Zeile 4o und Anspruch).2nd lines 38 to 40) U.S. Patent No. 987 965 (especially p. = Line 4o and claim).
DES135527D 1939-01-21 1939-01-21 Manufacture of anti-corrosive pigments Expired DE747780C (en)

Priority Applications (1)

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DES135527D DE747780C (en) 1939-01-21 1939-01-21 Manufacture of anti-corrosive pigments

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2245959A1 (en) * 1971-09-20 1973-03-22 Hammond Lead Products COMPOSITE PIGMENT AND METHOD FOR ITS MANUFACTURING
FR2333033A1 (en) * 1975-11-26 1977-06-24 Ici Ltd PROCESS FOR MANUFACTURING AN IMPROVED CHROME PIGMENT
DE3532806A1 (en) * 1985-09-13 1987-03-19 Heubach Hans Dr Gmbh Co Kg CORROSION PROTECTIVE PIGMENTS BASED ON ZINC SILICATE AND THEIR PRODUCTION AND USE
WO1987005040A1 (en) * 1986-02-20 1987-08-27 Dr. Hans Heubach Gmbh & Co. Kg New anticorrosive pigments, preparation and utilization thereof
DE3731737A1 (en) * 1987-09-21 1989-03-30 Heubach Hans Dr Gmbh Co Kg CORROSION PROTECTION PIGMENTS BASED ON ERDALKALIHYDROGEN PHOSPHATES
FR2655052A1 (en) * 1989-11-30 1991-05-31 Ciba Geigy Ag PROCESS FOR STABILIZING BISMUTH VANADATE PIGMENTS AGAINST ATTACK BY HYDROCHLORIC ACID, AND MACROMOLECULAR ORGANIC MATERIALS THAT HAVE BEEN COLORED BY PIGMENTS SO STABILIZED

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US987965A (en) * 1910-12-27 1911-03-28 Allerton S Cushman Inhibitive pigment and method of making same.
DE574379C (en) * 1930-08-14 1933-04-12 I G Farbenindustrie Akt Ges Yellow to red chrome colors
DE574380C (en) * 1930-08-15 1933-04-13 I G Farbenindustrie Akt Ges Manufacture of chrome yellow paints
DE575537C (en) * 1926-04-25 1933-04-28 Felix Singer Dr Ing Dr Production of yellow earth colors
GB416744A (en) * 1933-01-17 1934-09-20 Harshaw Chem Corp Improvements in or relating to the manufacture of lead chromate and substances containing lead chromate
DE615147C (en) * 1930-08-15 1935-06-28 I G Farbenindustrie Akt Ges Process for the production of yellow to red chrome paints

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US987965A (en) * 1910-12-27 1911-03-28 Allerton S Cushman Inhibitive pigment and method of making same.
DE575537C (en) * 1926-04-25 1933-04-28 Felix Singer Dr Ing Dr Production of yellow earth colors
DE574379C (en) * 1930-08-14 1933-04-12 I G Farbenindustrie Akt Ges Yellow to red chrome colors
DE574380C (en) * 1930-08-15 1933-04-13 I G Farbenindustrie Akt Ges Manufacture of chrome yellow paints
DE615147C (en) * 1930-08-15 1935-06-28 I G Farbenindustrie Akt Ges Process for the production of yellow to red chrome paints
GB416744A (en) * 1933-01-17 1934-09-20 Harshaw Chem Corp Improvements in or relating to the manufacture of lead chromate and substances containing lead chromate

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2245959A1 (en) * 1971-09-20 1973-03-22 Hammond Lead Products COMPOSITE PIGMENT AND METHOD FOR ITS MANUFACTURING
FR2333033A1 (en) * 1975-11-26 1977-06-24 Ici Ltd PROCESS FOR MANUFACTURING AN IMPROVED CHROME PIGMENT
DE3532806A1 (en) * 1985-09-13 1987-03-19 Heubach Hans Dr Gmbh Co Kg CORROSION PROTECTIVE PIGMENTS BASED ON ZINC SILICATE AND THEIR PRODUCTION AND USE
WO1987005040A1 (en) * 1986-02-20 1987-08-27 Dr. Hans Heubach Gmbh & Co. Kg New anticorrosive pigments, preparation and utilization thereof
DE3731737A1 (en) * 1987-09-21 1989-03-30 Heubach Hans Dr Gmbh Co Kg CORROSION PROTECTION PIGMENTS BASED ON ERDALKALIHYDROGEN PHOSPHATES
FR2655052A1 (en) * 1989-11-30 1991-05-31 Ciba Geigy Ag PROCESS FOR STABILIZING BISMUTH VANADATE PIGMENTS AGAINST ATTACK BY HYDROCHLORIC ACID, AND MACROMOLECULAR ORGANIC MATERIALS THAT HAVE BEEN COLORED BY PIGMENTS SO STABILIZED
US5123965A (en) * 1989-11-30 1992-06-23 Ciba-Geigy Corporation Process for stabilizing bismuth vanadate pigments against attack by hydrochloric acid

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