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EP2119495B1 - Method for producing products containing pigments - Google Patents

Method for producing products containing pigments Download PDF

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Publication number
EP2119495B1
EP2119495B1 EP09004895A EP09004895A EP2119495B1 EP 2119495 B1 EP2119495 B1 EP 2119495B1 EP 09004895 A EP09004895 A EP 09004895A EP 09004895 A EP09004895 A EP 09004895A EP 2119495 B1 EP2119495 B1 EP 2119495B1
Authority
EP
European Patent Office
Prior art keywords
pigment
base material
dosing
containing pigments
syringe
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.)
Active
Application number
EP09004895A
Other languages
German (de)
French (fr)
Other versions
EP2119495A3 (en
EP2119495A2 (en
Inventor
Klaus Hudelmaier
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.)
Schwenk Putztechnik & Co KG GmbH
Original Assignee
Schwenk Putztechnik & Co KG 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
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Publication of EP2119495A2 publication Critical patent/EP2119495A2/en
Publication of EP2119495A3 publication Critical patent/EP2119495A3/en
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/405—Methods of mixing liquids with liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
    • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
    • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
    • B01F33/50112—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held of the syringe or cartridge type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/84—Mixing plants with mixing receptacles receiving material dispensed from several component receptacles, e.g. paint tins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/50—Mixing receptacles
    • B01F35/51—Mixing receptacles characterised by their material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/50—Mixing receptacles
    • B01F35/513—Flexible receptacles, e.g. bags supported by rigid containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/715—Feeding the components in several steps, e.g. successive steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/30—Mixing paints or paint ingredients, e.g. pigments, dyes, colours, lacquers or enamel

Definitions

  • the invention relates to a method for producing pigment-containing products according to the preamble of patent claim 1.
  • Such methods are, for example, for the manufacture of building materials in the form of paints, primers, plasters u. Like. Used.
  • the color of the building materials is determined by the pigment composition and pigment concentration in the base material.
  • both mineral products in which the Base material is available as dry bagged goods, as well as pasty products in which the finished products are available as bucket goods are produced.
  • Mineral products in which the pulverulent pigments are mixed at the factory with pulverulent carrier materials are mixed and processed at the place of processing with mixing water. In this case, the pulverulent pigments are blended with the carrier material at the factory and filled into sacks.
  • the base material is colored according to given colors with suitable dosing using suitable pigment concentrates.
  • suitable pigment concentrates are metered into a prefabricated base container by means of a volumetric or gravimetric metering method on defined amounts of base material.
  • the pigment-containing products are requested by the processor in the required quantity from the manufacturer, manufactured and delivered according to the color specifications of the processor.
  • the required amount of pigment-containing products is not exactly known, because the substrate and processing method significantly influence the consumption quantities and an exact oversize of the surfaces to be provided with the pigment-containing products is often not available.
  • the processor orders too little material from the manufacturer, it may be necessary to reorder the material, which has to be remixed according to the manufacturer's color requirements. This is associated with a high loss of time and thereby incurred costs.
  • the processor requests too much pigment-containing products from the manufacturer, the product made according to specific customer color requirements can not be used at other processing locations and must then be disposed of. This is also associated with high costs.
  • the invention has for its object to provide a method for producing pigment-containing products, with which any color tones can be produced quickly, reliably and inexpensively. According to the invention this object is achieved by the specified in the characterizing part of claim 1 development of the known methods.
  • the production of a pigment concentrate with the desired pigment mixture takes place in the metering container itself, so that it is not necessary to resort to bottoms or base colors filled into individual metering containers.
  • the pigment mixture thus produced in the dosing can be fed to the base material at the processing site and mixed with conventional mixing devices customary in the field, such as mixing mixers in the form of rotary-type drilling machines.
  • the invention is based on the finding that it is in the known processes for the production of mineral products to Agglomerat embarrassed of pigments or clumping of the pigments can occur, which influence the coloring. When processing on the facade, streaks or streaks may form.
  • 5.0 ml of yellow pigments may be mixed with 0.2 ml of red pigments. Even if only a small part of the red pigment does not get into the base material, the color is yellowish, but not apricot-colored.
  • This deficiency is remedied in the method according to the invention in that the pigment-containing base materials are already mixed together in the dosing, so that no change in the color mixture takes place when a small remainder of the mixed in the dosing tank raw materials is not expelled.
  • the pigment-containing base materials may already be in the form of pasty products. It may be dissolved in a carrier solution pigments.
  • a pigment-free base material is first filled into the metering container and only then is the pigment-containing base material added. This can prevent the pigments from settling in the bottom region of the dosing container and from the following mixing process in full take part. Thus, a particularly reliable production of predetermined tints is achieved.
  • the settling of the pigments at the bottom of the dosing is particularly reliably prevented because the pigment-free base material both embodiments of inventive method has a greater density than the pigment-containing base materials, so that when charging the dosing a heterogeneous mixture is formed therein.
  • the pigment-free base may be a binderless and pigment-free "paint" comprising water, thickening agents, preservatives, wetting agents, defoaming agents and / or inorganic fillers.
  • the density of the pigment-free base material is preferably more than 1.5 g / cm 3 , esp. More than 2.0 g / cm 3 , more preferably about 2.2 g / cm 3 , while the viscosity may be 2000 mPa.s.
  • the pigment-containing base materials advantageously have a density of 1.05 g / cm 3 to about 2.2 g / cm 3 , wherein these base materials may have a viscosity of 2000 mPa.s.
  • the pigment-containing base materials may comprise water, wetting agents, preservatives, thickeners and / or defoaming agents.
  • the dosing is filled after filling the pigment-containing raw materials with a pigment-free base material of lower density.
  • the metering container may have a filling volume of 0.5 to 1100 ml or more, wherein to allow complete mixing of the raw materials filling up to max. 90% of the filling volume, preferably up to max. 80% of the filling volume of the dosing tank takes place.
  • the metering container has a syringe cylinder having a piston opening and an outlet opening, wherein the piston opening is closed after filling the basic materials and before the mixing process with the syringe plunger.
  • the closing of the syringe plunger, while avoiding the pressing out of the filled into the syringe barrel raw materials can be facilitated if the insertion of the syringe plunger through the piston opening facilitating vent opening is provided in a wall of the syringe barrel preferably made of transparent material, after closing the piston opening with the syringe plunger is closed.
  • the vent is suitably provided at about 100% of the filling amount of the syringe barrel.
  • the mixing of the raw materials taking place when carrying out the process according to the invention can be carried out, for example, with the aid of a biaxial mixer.
  • the dosing container charged with the basic materials are clamped with suitable devices in a plastic box, wherein a realized in the form of a syringe dosing can be firmly fixed in the box, while a realized in the form of a tubular bag dosing is placed in a pre-filled with chips plastic container, the Plastic container filled with chips, sealed and then mixed using the biaxial mixer.
  • the loading of the dosing with the pigment-free and / or pigment-containing raw materials can be done via volumetric and / or gravimetric dosing.
  • a small hole in the wall of the syringe barrel is formed at a predetermined location, such as at 90% of the filling volume to after loading the syringe barrel with the pigment-containing fillers or pigment pastes and optionally another carrier material to sit the syringe plunger for expressing directly.
  • the vent hole can be closed with a label.
  • a preferably non-contact mixing takes place in a suitable mixing device, such as a biaxial mixer. It may be a standard mixer, for which the above-described special jigs can be built. Care must be taken to the stability of the jigs.
  • a foam core surrounds the entire Container and the entire core is clamped in the biaxial mixer and mixed for about 3 minutes.
  • the invention is not limited to the above-outlined invention example.
  • three or more pigment-containing raw materials may be mixed together in the dosing tank. It is also possible to dispense with the metered addition of a pigment-free second base material after charging with the pigment-containing base materials. Density and viscosity of the raw materials may differ from the values given above.
  • the invention can also be used in the context of the production of mineral pigment-containing products.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paints Or Removers (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

Method for preparing pigment-containing product (preferably dyes, primers and polishes) comprises: adding a pigment concentrate, from a dosing container in a given quantity, to a base material; and mixing, where for preparing the pigment concentrate, a first pigment-containing raw material and a second pigment-containing raw material are filled in the dosing container and the two raw materials are mixed together in the container. Independent claims are included for: (1) a method for preparing a pigment concentrate comprising feeding the dosing container, in a first step, with a pigment-free raw material and with, in a second step, a pigment-containing raw material; and (2) the pigment concentrate prepared by the above method.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen pigmenthaltiger Produkte nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a method for producing pigment-containing products according to the preamble of patent claim 1.

Derartige Verfahren werden bspw. zum Herstellen von Baustoffen in Form von Farben, Grundierungen, Putzen u. dgl. eingesetzt. Der Farbton der Baustoffe wird dabei durch die Pigmentzusammensetzung und Pigmentkonzentration in dem Basismaterial bestimmt. Grundsätzlich können mit solchen Verfahren sowohl mineralische Produkte, bei denen das Basismaterial als trockene Sackware vorliegt, als auch pastöse Produkte, bei denen die fertigen Produkte als Eimerware vorliegen, hergestellt werden. Mineralische Produkte, bei denen die pulverförmigen Pigmente werksseitig mit pulverförmigen Trägermaterialien vermischt werden, werden am Verarbeitungsort mit Anmachwasser vermischt und verarbeitet. Dabei werden die pulverförmigen Pigmente werksseitig mit dem Trägermaterial abgemischt und in Säcken abgefüllt. Bei pastösen Produkten wird das Basismaterial entsprechend vorgegebener Farben mit geeigneten Dosieranlagen unter Verwendung geeigneter Pigmentkonzentrate eingefärbt. Bei diesem Verfahren werden auf definierte Basismaterialmengen geeignete Pigmentkonzentrate über ein volumetrisches oder gravimetrisches Dosierverfahren in ein vorgefertigtes Basisgebinde zudosiert. Bei der Fertigung einer Mehrzahl von Gebinden mit gleicher Färbung kann so eine exakte Reproduzierbarkeit erreicht werden.Such methods are, for example, for the manufacture of building materials in the form of paints, primers, plasters u. Like. Used. The color of the building materials is determined by the pigment composition and pigment concentration in the base material. Basically, with such methods, both mineral products in which the Base material is available as dry bagged goods, as well as pasty products in which the finished products are available as bucket goods, are produced. Mineral products in which the pulverulent pigments are mixed at the factory with pulverulent carrier materials are mixed and processed at the place of processing with mixing water. In this case, the pulverulent pigments are blended with the carrier material at the factory and filled into sacks. In pasty products, the base material is colored according to given colors with suitable dosing using suitable pigment concentrates. In this process, suitable pigment concentrates are metered into a prefabricated base container by means of a volumetric or gravimetric metering method on defined amounts of base material. In the production of a plurality of containers with the same coloration so an exact reproducibility can be achieved.

In der Praxis werden die pigmenthaltigen Produkte vom Verarbeiter in der erforderlichen Menge beim Hersteller angefordert, entsprechend den Farbvorgaben des Verarbeiters hergestellt und ausgeliefert. Allerdings ist die benötigte Menge pigmenthaltiger Produkte in vielen Fällen nicht genau bekannt, weil Untergrund und Verarbeitungsweise die Verbrauchsmengen wesentlich beeinflussen und ein exaktes Aufmaß der mit den pigmenthaltigen Produkten zu versehenen Flächen oft nicht verfügbar ist. Wenn der Verarbeiter unter diesen Umständen zu wenig Material beim Hersteller bestellt, muß ggf. Material nachbestellt werden, was entsprechend den Farbtonwünschen beim Hersteller neu abzumischen ist. Das ist mit einem hohen Zeitverlust und dadurch verursachten Kosten verbunden. Wenn hingegen der Verarbeiter beim Hersteller eine zu große Menge pigmenthaltiger Produkte anfordert, kann das gemäß speziellen Kundenwünschen hinsichtlich der Farbgebung angefertigte Produkt an anderen Verarbeitungsorten nicht eingesetzt werden und muß anschließend entsorgt werden. Auch das ist mit hohen Kosten verbunden.In practice, the pigment-containing products are requested by the processor in the required quantity from the manufacturer, manufactured and delivered according to the color specifications of the processor. However, in many cases, the required amount of pigment-containing products is not exactly known, because the substrate and processing method significantly influence the consumption quantities and an exact oversize of the surfaces to be provided with the pigment-containing products is often not available. If, under these circumstances, the processor orders too little material from the manufacturer, it may be necessary to reorder the material, which has to be remixed according to the manufacturer's color requirements. This is associated with a high loss of time and thereby incurred costs. If, on the other hand, the processor requests too much pigment-containing products from the manufacturer, the product made according to specific customer color requirements can not be used at other processing locations and must then be disposed of. This is also associated with high costs.

Im Hinblick auf diese Probleme im Stand der Technik wurde im Zusammenhang mit der Herstellung mineralischer Produkte bereits vorgeschlagen, die pro Gebinde (Sack) benötigte Pigmentmenge in einen Beutel abzufüllen und durch den Verarbeiter vor Ort dem Inhalt des Sackes mit Anmachwasser beizumischen. Im Zusammenhang mit der Herstellung pastöser Produkte wurde bereits vorgeschlagen, Pigmentkonzentrate für Basisfarben in Bechern oder ähnlichen Behältnissen abzufüllen und am Verarbeitungsort dem Basismaterial zuzugeben. Bei beiden bekannten Verfahren kommt es jedoch zu Problemen hinsichtlich der Reproduzierbarkeit der vorgegebenen Farbtönungen.In view of these problems in the prior art, in connection with the production of mineral products, it has already been proposed to fill the quantity of pigment required per bag into a bag and to mix it with the contents of the bag with mixing water by the processor on site. In connection with the production of pasty products, it has already been proposed to fill pigment concentrates for base colors in beakers or similar containers and to add them to the base material at the processing site. In both known methods, however, there are problems with respect to the reproducibility of the predetermined hues.

Solche Verfahren sind in der US 5, 468,068 und der WO2006/036096 beschrieben. Ein Verfahren nach dem Oberbegriff des Patentanspruchs 1 ist in der WO 2006/067206 beschrieben.Such methods are in the US 5,468,068 and the WO2006 / 036096 described. A method according to the preamble of claim 1 is in the WO 2006/067206 described.

Angesichts dieser Probleme im Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Verfahren zum Herstellen pigmenthaltiger Produkte anzugeben, mit dem beliebige Farbtöne schnell, zuverlässig und kostengünstig hergestellt werden können. Erfindungsgemäß wird diese Aufgabe durch die im kennzeichnenden Teil des Patentanspruchs 1 angegebene Weiterbildung der bekannten Verfahren gelöst.In view of these problems in the prior art, the invention has for its object to provide a method for producing pigment-containing products, with which any color tones can be produced quickly, reliably and inexpensively. According to the invention this object is achieved by the specified in the characterizing part of claim 1 development of the known methods.

Bei dieser Lösung erfolgt also die Herstellung eines Pigmentkonzentrats mit der gewünschten Pigmentmischung in dem Dosierbehälter selbst, so daß nicht auf in einzelne Dosierbehälter abgefüllte Grundfarben bzw. Basisfarben zurückgegriffen werden muß. Das so in dem Dosierbehälter hergestellte Pigmentgemisch kann am Verarbeitungsort dem Basismaterial zugeführt und mit herkömmlichen baustellenüblichen Mischvorrichtungen, wie etwa Putzmischern in Form von mit einem Quirlaufsatz versehenen Bohrmaschinen, vermischt werden. Dabei beruht die Erfindung auf der Erkenntnis, daß es bei den bekannten Verfahren zur Herstellung mineralischer Produkte zu Agglomeratbildungen von Pigmenten bzw. Verklumpungen der Pigmente kommen kann, welche die Färbung beeinflussen. Bei der Verarbeitung an der Fassade können sich Schlieren oder Streifen bilden. Dieses Problem wird durch die Mischung der pigmenthaltigen Grundstoffe in dem Dosierbehälter und die erfindungsgemäße Verwendung der so erhaltenen Farbpasten zur Herstellung pigmenthaltiger Produkte gelöst. Weiter wurde erkannt, daß bei den herkömmlichen Verfahren zur Herstellung von pastösen Produkten bei Verwendung von in Bechern oder ähnliche Behältnisse abgefüllten Pigmentkonzentraten oder Farbmischungen Probleme auftreten, wenn ein gewünschter Farbton besondere Pigmentmischungen erfordert, bei denen von einer Pigmentsorte nur geringe Mengen benötigt werden, welche ggf. nicht restfrei aus dem Behältnis ausgetrieben werden können. Das soll im folgenden anhand eines hellen Aprikottons erläutert werden:In this solution, therefore, the production of a pigment concentrate with the desired pigment mixture takes place in the metering container itself, so that it is not necessary to resort to bottoms or base colors filled into individual metering containers. The pigment mixture thus produced in the dosing can be fed to the base material at the processing site and mixed with conventional mixing devices customary in the field, such as mixing mixers in the form of rotary-type drilling machines. The invention is based on the finding that it is in the known processes for the production of mineral products to Agglomeratbildung of pigments or clumping of the pigments can occur, which influence the coloring. When processing on the facade, streaks or streaks may form. This problem is solved by the mixture of pigment-containing raw materials in the dosing and the inventive use of the color pastes thus obtained for the production of pigment-containing products. It has further been recognized that problems arise in the conventional processes for producing pasty products when using pigment concentrates or color mixtures filled in beakers or similar containers, when a desired hue requires special pigment mixtures in which only small amounts of a type of pigment are required, which may be required . can not be driven out of the container. This will be explained below with the help of a bright apricot:

Zur Herstellung eines solchen Farbtons können 5,0 ml gelber Pigmente mit 0,2 ml roter Pigmente vermischt werden. Wenn auch nur ein geringer Teil des Rotpigments nicht in das Basismaterial gelangt, ist der Farbton gelblich, jedoch nicht aprikotfarben. Dieser Mangel wird bei dem erfindungsgemäßen Verfahren dadurch behoben, daß die pigmenthaltigen Grundstoffe bereits in dem Dosierbehälter miteinander vermischt werden, so daß keine Veränderung des Farbgemisches stattfindet, wenn ein kleiner Rest der in dem Dosierbehälter vermischten Grundstoffe nicht ausgetrieben wird. Die pigmenthaltigen Grundstoffe können bereits in Form pastöser Produkte vorliegen. Es kann sich dabei um in einer Trägerlösung gelöste Pigmente handeln.To prepare such a hue, 5.0 ml of yellow pigments may be mixed with 0.2 ml of red pigments. Even if only a small part of the red pigment does not get into the base material, the color is yellowish, but not apricot-colored. This deficiency is remedied in the method according to the invention in that the pigment-containing base materials are already mixed together in the dosing, so that no change in the color mixture takes place when a small remainder of the mixed in the dosing tank raw materials is not expelled. The pigment-containing base materials may already be in the form of pasty products. It may be dissolved in a carrier solution pigments.

Erfindungsgemäß wird zunächst ein pigmentfreier Grundstoff in den Dosierbehälter gefüllt und erst danach die pigmenthaltigen Grundstoffe zudosiert. Dadurch kann verhindert werden, daß sich die Pigmente im Bodenbereich des Dosierbehälters absetzen und am folgenden Mischvorgang nicht mehr in vollem Umfang teilnehmen. So wird eine besonders zuverlässige Herstellung vorgegebener Tönungen erreicht. Das Absetzen der Pigmente am Boden des Dosierbehälters wird besonders zuverlässig verhindert, weil der pigmentfreie Grundstoff beider Ausführung erfindungsgemäßer Verfahren eine gröβere Dichte aufweist als die pigmenthaltigen Grundstoffe, so daß beim Beschicken des Dosierbehälters eine heterogene Mischung darin entsteht. Bei dem pigmentfreien Grundstoff kann es sich um eine bindemittel- und pigmentfreie "Farbe" handeln, die Wasser, Verdickungsmittel, Konservierungsmittel, Netzmittel, Entschäumungsmittel und/oder anorganische Füllstoffe aufweist. Die Dichte des pigmentfreien Grundstoffs beträgt vorzugsweise mehr als 1,5 g/cm3, insbes. mehr als 2,0 g/cm3, besonders bevorzugt etwa 2,2 g/cm3, während die Viskosität 2000 mPa.s betragen kann. Die pigmenthaltigen Grundstoffe weisen zweckmäßigerweise eine Dichte von 1,05 g/cm3 bis etwa 2,2 g/cm3 auf, wobei auch diese Grundstoffe eine Viskosität von 2000 mPa.s aufweisen können. Die pigmenthaltigen Grundstoffe können Wasser, Netzmittel, Konservierungsmittel, Verdickungsmittel und/oder Entschäumungsmittel aufweisen.According to the invention, a pigment-free base material is first filled into the metering container and only then is the pigment-containing base material added. This can prevent the pigments from settling in the bottom region of the dosing container and from the following mixing process in full take part. Thus, a particularly reliable production of predetermined tints is achieved. The settling of the pigments at the bottom of the dosing is particularly reliably prevented because the pigment-free base material both embodiments of inventive method has a greater density than the pigment-containing base materials, so that when charging the dosing a heterogeneous mixture is formed therein. The pigment-free base may be a binderless and pigment-free "paint" comprising water, thickening agents, preservatives, wetting agents, defoaming agents and / or inorganic fillers. The density of the pigment-free base material is preferably more than 1.5 g / cm 3 , esp. More than 2.0 g / cm 3 , more preferably about 2.2 g / cm 3 , while the viscosity may be 2000 mPa.s. The pigment-containing base materials advantageously have a density of 1.05 g / cm 3 to about 2.2 g / cm 3 , wherein these base materials may have a viscosity of 2000 mPa.s. The pigment-containing base materials may comprise water, wetting agents, preservatives, thickeners and / or defoaming agents.

Zur Vermeidung des Absetzens von Pigmenten an einer oberen Begrenzungsfläche des Dosierbehälters während des Mischvorgangs kann bei einer bevorzugten Ausführungsform der Erfindung vorgesehen sein, daß der Dosierbehälter nach Einfüllen der pigmenthaltigen Grundstoffe mit einem pigmentfreien Grundstoff geringerer Dichte befüllt wird. Der Dosierbehälter kann ein Füllvolumen von 0,5 bis 1100 ml oder mehr aufweisen, wobei zur Ermöglichung einer vollständigen Durchmischung der Grundstoffe eine Befüllung bis max. 90 % des Füllvolumens, vorzugsweise bis max. 80 % des Füllvolumens, des Dosierbehälters erfolgt.To avoid the deposition of pigments on an upper boundary surface of the dosing during the mixing process may be provided in a preferred embodiment of the invention that the dosing is filled after filling the pigment-containing raw materials with a pigment-free base material of lower density. The metering container may have a filling volume of 0.5 to 1100 ml or more, wherein to allow complete mixing of the raw materials filling up to max. 90% of the filling volume, preferably up to max. 80% of the filling volume of the dosing tank takes place.

Erfindungsgemäß weist der Dosierbehälter einen eine Kolbenöffnung und eine Austrittsöffnung aufweisenden Spritzenzylinder auf, wobei die Kolbenöffnung nach Einfüllen der Grundstoffe und vor dem Mischvorgang mit dem Spritzenkolben verschlossen wird. Das Verschließen des Spritzenkolbens unter Vermeidung des Ausdrückens der in den Spritzenzylinder eingefüllten Grundstoffe kann erleichtert werden, wenn eine das Einführen des Spritzenkolbens durch die Kolbenöffnung erleichternde Entlüftungsöffnung in einer Wand des vorzugsweise aus transparentem Material hergestellten Spritzenzylinders vorgesehen ist, die nach Verschließen der Kolbenöffnung mit dem Spritzenkolben verschlossen wird. Die Entlüftungsöffnung ist zweckmäßigerweise bei etwa 100 % der Füllmenge des Spritzenzylinders vorgesehen.According to the invention, the metering container has a syringe cylinder having a piston opening and an outlet opening, wherein the piston opening is closed after filling the basic materials and before the mixing process with the syringe plunger. The closing of the syringe plunger, while avoiding the pressing out of the filled into the syringe barrel raw materials can be facilitated if the insertion of the syringe plunger through the piston opening facilitating vent opening is provided in a wall of the syringe barrel preferably made of transparent material, after closing the piston opening with the syringe plunger is closed. The vent is suitably provided at about 100% of the filling amount of the syringe barrel.

Die bei Durchführung erfindungsgemäßer Verfahren erfolgende Vermischung der Grundstoffe kann bspw. mit Hilfe eines Biaxialmischers erfolgen. Dazu werden die mit den Grundstoffen beschickten Dosierbehälter mit geeigneten Vorrichtungen in eine Kunststoffbox eingespannt, wobei ein in Form einer Spritze verwirklichter Dosierbehälter in der Box fest fixiert werden kann, während ein in Form eines Schlauchbeutels verwirklichter Dosierbehälter in ein mit Chips vorgefülltes Kunststoffgebinde eingelegt wird, das Kunststoffgebinde mit Chips aufgefüllt, verschlossen und anschließend mit Hilfe des Biaxialmischers vermischt wird. Das Beschicken des Dosierbehälters mit den pigmentfreien und/oder pigmenthaltigen Grundstoffen kann über volumetrische und/oder gravimetrische Dosierverfahren erfolgen.The mixing of the raw materials taking place when carrying out the process according to the invention can be carried out, for example, with the aid of a biaxial mixer. For this purpose, the dosing container charged with the basic materials are clamped with suitable devices in a plastic box, wherein a realized in the form of a syringe dosing can be firmly fixed in the box, while a realized in the form of a tubular bag dosing is placed in a pre-filled with chips plastic container, the Plastic container filled with chips, sealed and then mixed using the biaxial mixer. The loading of the dosing with the pigment-free and / or pigment-containing raw materials can be done via volumetric and / or gravimetric dosing.

Zusammenfassend kann die Ausführung einer besonders bevorzugten Ausführungsform erfindungsgemäßer Verfahren etwa wie folgt beschrieben werden:

  • In einem ersten Dosierschritt wird ein wäßriges Trägermaterial hoher Dichte (bspw. etwa 2,2 g/cm3) und hoher Viskosität, welches keinen Einfluß auf den Farbton oder die späteren Materialeigenschaften hat, in einen Dosierbehälter in Form eines Spritzenzylinders vordosiert. Dadurch wird der Spritzenkonus vorgefüllt und so ein späteres Vermischen der einzelnen pigmenthaltigen Grundstoffe zu einem homogenen Pigmentgemisch gewährleistet. Ferner wird dadurch erreicht, daß sich schwere Pigmente nicht in der Spitze des als Dosierbehälter verwendeten Spritzenzylinders absetzen, bevor es zum Mischvorgang kommt.
  • In einem zweiten Dosierschritt werden die pigmenthaltigen Grundstoffe volumetrisch oder gravimetrisch in den Dosierbehälter zudosiert. Dabei können herkömmliche Dosieranlagen zum Einsatz kommen.
  • In einem dritten Dosierschritt wird pigmentfreies Trägermaterial in den Dosierbehälter gefüllt, bis eine gewünschte Füllmenge erreicht ist. Es muß dabei darauf geachtet werden, daß vor dem Verschließen des Dosierbehälters ein Luftraum zur Verfügung steht, damit die Grundstoffe vollständig vermischt werden können. Die Gesamtfüllmenge des Dosierbehälters sollte max. 80 bis 90 % des Volumens betragen.
In summary, the execution of a particularly preferred embodiment of the method according to the invention can be described as follows:
  • In a first metering step, an aqueous carrier material of high density (for example about 2.2 g / cm 3 ) and high viscosity, which has no influence on the hue or the subsequent material properties, is metered into a metering container in the form of a syringe barrel. As a result, the syringe cone is prefilled and thus ensures a later mixing of the individual pigment-containing raw materials to a homogeneous pigment mixture. Furthermore, it is achieved that heavy pigments do not settle in the tip of the syringe barrel used as a metering container before it comes to the mixing process.
  • In a second dosing step, the pigment-containing base materials are added volumetrically or gravimetrically into the dosing container. In this case, conventional dosing can be used.
  • In a third dosing step, pigment-free carrier material is filled into the dosing container until a desired filling quantity has been reached. Care must be taken to ensure that there is an air space available before closing the dosing tank so that the raw materials can be completely mixed. The total filling quantity of the dosing tank should be max. 80 to 90% of the volume.

Bei der erfindungsgemäßen Verwendung von Dosierbehältern in Form von Spritzenzylindern wird an einer vorgegebenen Stelle, wie etwa bei 90 % des Füllvolumens, ein kleines Loch in der Wand des Spritzenzylinders gebildet, um nach dem Beschicken des Spritzenzylinders mit den pigmenthaltigen Füllstoffen bzw. Pigmentpasten und ggf. einem weiteren Trägermaterial den Spritzenkolben zum Ausdrücken direkt aufsetzen zu können. Nach dem Aufsetzen des Spritzenkolbens kann das Entlüftungsloch mit einem Etikett verschlossen werden. Nach Verschließen des Dosierbehälters erfolgt ein vorzugsweise berührungsfreies Durchmischen in einer geeigneten Mischvorrichtung, wie etwa einem Biaxialmischer. Es kann sich dabei um einen Standardmischer handeln, für den die vorstehend bereits erläuterten besonderen Einspannvorrichtungen gebaut werden können. Dabei muß auf die Stabilität der Einspannvorrichtungen geachtet werden. Zweckmäßigerweise umgibt ein Hartschaumkern das gesamte Behältnis und der gesamte Kern wird in den Biaxialmischer eingespannt und etwa 3 Minuten gemischt.In the inventive use of dosing in the form of syringe barrels, a small hole in the wall of the syringe barrel is formed at a predetermined location, such as at 90% of the filling volume to after loading the syringe barrel with the pigment-containing fillers or pigment pastes and optionally another carrier material to sit the syringe plunger for expressing directly. After placing the syringe plunger, the vent hole can be closed with a label. After closing the metering container, a preferably non-contact mixing takes place in a suitable mixing device, such as a biaxial mixer. It may be a standard mixer, for which the above-described special jigs can be built. Care must be taken to the stability of the jigs. Conveniently, a foam core surrounds the entire Container and the entire core is clamped in the biaxial mixer and mixed for about 3 minutes.

Die Erfindung ist nicht auf das vorstehend skizzierte Erfindungsbeispiel beschränkt. Beispielsweise können drei oder mehr pigmenthaltige Grundstoffe in dem Dosierbehälter miteinander vermischt werden. Es kann auch von der Zudosierung eines pigmentfreien zweiten Grundstoffs nach Beschicken mit den pigmenthaltigen Grundstoffen abgesehen werden. Dichte und Viskosität der Grundstoffe können von den vorstehend angegebenen Werten abweichen. Die Erfindung kann auch im Rahmen der Herstellung mineralischer pigmenthaltiger Produkte eingesetzt werden.The invention is not limited to the above-outlined invention example. For example, three or more pigment-containing raw materials may be mixed together in the dosing tank. It is also possible to dispense with the metered addition of a pigment-free second base material after charging with the pigment-containing base materials. Density and viscosity of the raw materials may differ from the values given above. The invention can also be used in the context of the production of mineral pigment-containing products.

Claims (3)

  1. A method for producing products containing pigments wherein a pigment concentrate from a metering container is added to a pre-specified quantity of a base material and mixed with the latter, wherein in order to produce the pigment concentrate a first base material containing pigments and a second base material preferably also containing pigments is poured into the metering container, and the base materials in the metering container are mixed with one another, the metering container having a syringe cylinder having a plunger opening and an outlet opening, and the plunger opening being closed with the syringe plunger after pouring in the base materials and before the mixing process, characterised in that the syringe cylinder is charged in a first step with a pigment-free base material, and in a second step with base materials containing pigments and having a lesser density than the pigment-free base material.
  2. The method according to Claim 1, characterised in that the metering container is filled by max. 90%, in particular max. 80%, of its filling volume with the base materials.
  3. The method according to Claim 1 or 2, characterised in that a vent opening in a wall of the syringe cylinder facilitating the introduction of the syringe piston through the piston opening is closed after closing the piston opening.
EP09004895A 2008-04-24 2009-04-02 Method for producing products containing pigments Active EP2119495B1 (en)

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DE102008020573A1 (en) 2009-10-29
EP2119495A2 (en) 2009-11-18
ATE516073T1 (en) 2011-07-15

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