EP2139626B1 - Core-sheath particle for use as a filler for feeder masses - Google Patents

Core-sheath particle for use as a filler for feeder masses Download PDF

Info

Publication number
EP2139626B1
EP2139626B1 EP08717855A EP08717855A EP2139626B1 EP 2139626 B1 EP2139626 B1 EP 2139626B1 EP 08717855 A EP08717855 A EP 08717855A EP 08717855 A EP08717855 A EP 08717855A EP 2139626 B1 EP2139626 B1 EP 2139626B1
Authority
EP
European Patent Office
Prior art keywords
core
particles
filler material
feeder
free flowing
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
EP08717855A
Other languages
German (de)
French (fr)
Other versions
EP2139626A1 (en
Inventor
Ulrich Lanver
Klaus Dieter Riemann
Jürgen HÜBERT
Hermann Lieber
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.)
Chemex GmbH
Original Assignee
Chemex 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
Application filed by Chemex GmbH filed Critical Chemex GmbH
Priority to SI200830596T priority Critical patent/SI2139626T1/en
Priority to PL08717855T priority patent/PL2139626T3/en
Publication of EP2139626A1 publication Critical patent/EP2139626A1/en
Application granted granted Critical
Publication of EP2139626B1 publication Critical patent/EP2139626B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/18—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/06—Ingot moulds or their manufacture
    • B22D7/10—Hot tops therefor
    • B22D7/102—Hot tops therefor from refractorial material only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/084—Breaker cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/088—Feeder heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/06—Ingot moulds or their manufacture
    • B22D7/10—Hot tops therefor

Definitions

  • the present invention relates to a pourable filling material comprising a multiplicity of core-shell particles for use as filler for feeder masses for producing feeders, to processes for producing pourable filling materials according to the invention, to corresponding feeder masses and corresponding feeders and to corresponding uses. Further objects of the present invention will become apparent from the following description and the appended claims.
  • feeder includes both feeder shells, feeder inserts and feeder caps, and heating pads.
  • liquid metal is poured into a semolina mold and solidifies there.
  • the solidification process is associated with a reduction in the volume of metal and it is therefore regularly feeder, ie open or closed spaces used in or on the mold to compensate for the volume deficit in the solidification of the casting and to prevent a voids formation in the casting.
  • Feeders are connected to the casting or vulnerable casting area and are usually located above and / or on the side of the mold cavity.
  • EP 0 913 215 B1 discloses feed compositions comprising hollow aluminosilicate microspheres having an alumina content of less than 38% by weight.
  • WO 9423865 A1 discloses a feeder composition comprising hollow alumina-containing microspheres having an alumina content of at least 40% by weight.
  • DE 10 2004 042535 A1 relates to a molding material mixture for the production of casting molds for metal processing, a process for the production of casting molds, casting molds obtained by the process and their use.
  • a refractory mold base and a water glass based binder is used for the production of the molds.
  • a refractory mold base and a water glass based binder is used for the production of the molds.
  • Added to the binder is a portion of a particulate metal oxide selected from the group consisting of silica, alumina, titania and zinc oxide.
  • WO 98/29208 A1 discloses a process for producing particles coated with a waterglass layer.
  • the invention is based on the recognition that it is possible by encasing carrier materials (which are used as a carrier core) with a z. B. for use as a filler in Suitermassen insufficient temperature resistance in core-shell particles to convert, which are up to a temperature of at least 1450 ° C, but usually at least 1500 ° C resistant.
  • Required for this is the wrapping of the carrier core with particles having a D 50 - value for the grain size of a maximum of 15 microns, considered per se up to a temperature of at least 1500 ° C, preferably 1600 ° C are resistant.
  • the carrier core has a size, d. H. a maximum length in the range of 30 ⁇ m to 500 ⁇ m; it consists of a material which is maximum resistant to a temperature of 1400 ° C and contains no polystyrene, preferably no organic, but preferably exclusively inorganic constituents.
  • the carrier core is preferably spherical.
  • a particle or material is considered to be stable if it neither melts below a given temperature nor softens or decomposes while losing its spatial shape.
  • the carrier core (a) of a core-shell particle to be used according to the invention preferably consists of a ceramic or a glass.
  • Kem shell particles to be used according to the invention can be used in refractory materials or materials, eg. As such for use in industrial furnace construction or to improve the fire protection in buildings. They can also be used in or as planteoliermaterialien, z. In the construction industry or the foundry industry.
  • the core-shell particles to be used according to the invention are part of a pourable filling material which is suitable for use as a filler for feeder masses for the production of feeds.
  • a pourable filling material according to the invention regularly comprises a multiplicity of core-shell particles described above (with the prediction being true with regard to the preferred embodiment of the core-shell particles) and optionally further filling substances.
  • the support core (a) in the plurality of core-shell particles preferably has a mean particle size MK in the range from 60 ⁇ m to 380 ⁇ m.
  • the mean size is determined in accordance with VDG leaflet P27 (October 1999).
  • the bulk density of the particles used as Rajkeme by itself is preferably in the range of 85 g / L to 500 g / L.
  • the bulk density of the carrier cores (a) is preferably determined before they are coated with the particles (b1) and the binder (b2) and optionally other constituents of the shell.
  • at least 90% by weight of the particles (b1) in the plurality of core-shell particles, based on the total weight of the particles (b1) have a maximum particle size of 45 ⁇ m.
  • pulverulent (ie fine, polydisperse) bulk materials are suitable for coating Sukeme (a), in which more than 90 wt .-% of the particles contained in the powder have a particle size of at most 45 microns.
  • the particle size of the particles in a corresponding powder is determined with Streulichtphotometem, z. B. by means of a Coulter scattered light photometer. As a further characteristic index often a D50 value is given, which corresponds to a mean grain size.
  • the present invention also relates to a feeder mass for the production of feeders, consisting of or comprising: core-shell particles to be used according to the invention (as described above, preferably in an embodiment described above as preferred) or a pourable filler material according to the invention (as described above, preferably in US Pat an embodiment referred to above as preferred) and a binder for bonding the core-shell particles or the pourable filling material.
  • a cold-box binder preferably each based on a benzyl ether resin and a polyisocyanate , particularly preferably an identical binder is used.
  • An edible mass according to the invention can be designed as an exothermic feeder mass and then regularly comprises, in addition to the constituents mentioned, an easily oxidizable metal and an oxidizing agent therefor, which are intended for exothermic reaction with one another.
  • the present invention also relates to feeders comprising a feeder mass according to the invention.
  • Feeders according to the invention preferably have a density of less than 0.7 g / cm 3 .
  • the present invention also relates to the use of a feeder mass according to the invention for producing an insulating or exothermic feeder.
  • a feeder according to the invention is a pourable according to the invention.
  • the molding process preferably takes place by the slurry process, the green state process, the cold box process or the hot box process.
  • Poraver standard grain size 0.1-0.3, Dennert Poraver GmbH
  • a BOSCH Profi 67 mixer 120 g
  • cold box binder 120 g
  • silicon carbide powder D 50 value for grain size: ⁇ 5 microns
  • the carrier core used is 800 g of omega bubbles (from Omega Minerals GmbH, grain size ⁇ 0.5 mm) as the carrier material in a suitable mixer of the type BOSCH Profi 67, and 120 g of Cold Box binder (Hüttenes-Albertus : Benzyl ether resin based on activator 6324 / gas resin 6348) evenly wetted. 200 g of alumina powder (D 50 value for grain size: about 12 microns) are added and the whole mixed homogeneously. Finally, about 0.5 ml of dimethylpropylamine are added to cure the binder. After a few seconds, the core-shell-shell particles formed are present as bulk material for further use.
  • the bulk material produced according to embodiment 1 or 2 is homogeneously mixed with cold box binder (Hüttenes-Albertus: benzyl ether resin based on activator 6324 / gas resin 6348). From the resulting mixture, feeder caps and other profile tablets (a) are stamped and (b) shot with core shooters (e.g., Röper, Laempe). Curing takes place in each case by addition of dimethylpropylamine.
  • cold box binder Hettenes-Albertus: benzyl ether resin based on activator 6324 / gas resin 6348.
  • a mixture of 30 parts by weight (by weight) of the bulk material produced according to Example 1 and 2 and 70 parts by weight of a conventional aluminothermic mixture is homogeneously mixed with cold box binder (Hüttenes-Albertus: benzyl ether resin based on activator 6324 / gas resin 6348) , From the resulting mixture are feeder caps and others Profile molding (a) tamped and (b) shot with core shooting machines (eg Röper, Laempe). Curing takes place in each case by addition of dimethylpropylamine.
  • cold box binder Hettenes-Albertus: benzyl ether resin based on activator 6324 / gas resin 6348

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Mold Materials And Core Materials (AREA)
  • Paints Or Removers (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Glanulating (AREA)
  • Silicon Compounds (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Medicinal Preparation (AREA)

Abstract

The present invention relates to a core-sheath particle for use as filler for feeder compositions for the production of feeders, comprising (a) a carrier core which has a size within a range of from 30 μm to 500 μm and consists of a material which is maximally resistant up to a temperature of 1400° C. and does not contain any polystyrene, (b) a sheath which encloses the core and consists of or comprises (b1) particles having a D 50 value for the particle size of at most 15 μm, which are resistant up to a temperature of at least 1500° C., and (b2) a binder which binds the particles to one another and to the carrier core, the core-sheath particle being resistant up to a temperature of at least 1450° C.

Description

Die vorliegende Erfindung betrifft, ein schüttfähiges Füllmaterial umfassend eine Vielzahl von Kern-Hülle-Partikeln zur Verwendung als Füllstoff für Speisermassen zur Herstellung von Speisern, Verfahren zur Herstellung erfindungsgemäßer schüttfähiger Füllmaterialien, entsprechende Speisermassen und entsprechende Speiser sowie entsprechende Verwendungen. Weitere Gegenstände der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung und den beigefügten Patentansprüchen.The present invention relates to a pourable filling material comprising a multiplicity of core-shell particles for use as filler for feeder masses for producing feeders, to processes for producing pourable filling materials according to the invention, to corresponding feeder masses and corresponding feeders and to corresponding uses. Further objects of the present invention will become apparent from the following description and the appended claims.

Der Begriff "Speiser" umfasst im Rahmen der vorliegenden Unterlagen sowohl Speiserumhüllungen, Speisereinsätze und Speiserkappen als auch Heizkissen.The term "feeder" as used herein includes both feeder shells, feeder inserts and feeder caps, and heating pads.

Bei der Herstellung von metallischen Formteilen in der Gießerei wird flüssiges Metall in eine Grießform eingefüllt und erstarrt dort. Der Erstarrungsvorgang ist mit einer Verringerung des Metallvolumens verbunden und es werden deshalb regelmäßig Speiser, d. h. offene oder geschlossene Räume in oder an der Gießform eingesetzt, um das Volumendefizit bei der Erstarrung des Gussstücks auszugleichen und so eine Lunkerbildung im Gussstück zu verhindern. Speiser sind mit dem Gussstück bzw. mit dem gefährdeten Gussstückbereich verbunden und befinden sich für gewöhnlich oberhalb und/oder an der Seite des Formhohlraums.In the production of metallic moldings in the foundry, liquid metal is poured into a semolina mold and solidifies there. The solidification process is associated with a reduction in the volume of metal and it is therefore regularly feeder, ie open or closed spaces used in or on the mold to compensate for the volume deficit in the solidification of the casting and to prevent a voids formation in the casting. Feeders are connected to the casting or vulnerable casting area and are usually located above and / or on the side of the mold cavity.

In Speisermassen zur Herstellung von Speisem und in den daraus hergestellten Speisern selbst werden heute regelmäßig Leichtfüllstoffe eingesetzt, welche bei einer hohen Temperaturbeständigkeit eine gute isolierende Wirkung bewirken sollen.In Speisermassen for the production of edible products and in the feeders themselves produced therefrom today lightweight fillers are regularly used, which should cause a good insulating effect at a high temperature resistance.

DE 10 2005 025 771 B3 offenbart isolierende Speiser umfassend keramische Hohlkugeln und Glas-Hohlkugeln. DE 10 2005 025 771 B3 discloses insulating feeders comprising ceramic hollow spheres and glass hollow spheres.

In EP 0 888 199 81 werden Speiser beschrieben, welche als isolierendes feuerfestes Material hohle Aluminiumsilikatmikrokugeln enthalten.In EP 0 888 199 81 Speisers are described which contain hollow aluminum silicate microspheres as insulating refractory material.

EP 0 913 215 B1 offenbart Speiserzusammensetzungen, die hohle Aluminiumsilikatmikrokügelchen mit eine Aluminiumoxidgehalt mit weniger als 38 Gew.-% umfassen. EP 0 913 215 B1 discloses feed compositions comprising hollow aluminosilicate microspheres having an alumina content of less than 38% by weight.

WO 9423865 A1 offenbart eine Speiserzusammensetzung umfassend hohle Aluminiumoxid enthaltende Mikrokügelchen mit einem Aluminiumoxidanteil von zumindest 40 Gew.-%. WO 9423865 A1 discloses a feeder composition comprising hollow alumina-containing microspheres having an alumina content of at least 40% by weight.

WO 2006/058347 A2 offenbart Speiserzusammensetzungen, die als Füllstoffe Kern-Hülle-Mikrokugeln mit einem Kern aus Polystyrol umfassen. Der Einsatz von Polystyrol führt jedoch zu unerwünschten Emissionen im Gießereibetrieb. WO 2006/058347 A2 discloses feed compositions comprising as fillers core-shell microspheres having a core of polystyrene. The use of polystyrene, however, leads to undesirable emissions in the foundry.

DE 10 2004 042535 A1 betrifft eine Formstoffmischung zur Herstellung von Gießformen für die Metallverarbeitung, ein Verfahren zur Herstellung von Gießformen, mit dem Verfahren erhaltene Gießformen sowie deren Verwendung. Für die Herstellung der Gießformen wird ein feuerfester Formgrundstoff sowie ein auf Wasserglas basierendes Bindemittel verwendet. Dem Bindemittel ist ein Anteil eines teilchenförmigen Metalloxids zugesetzt, welches ausgewählt ist aus der Gruppe bestehend aus Siliciumdioxid, Aluminiumdioxid, Titanoxid und Zinkoxid. WO 98/29208 A1 offenbart einen Prozess zur Herstellung von Partikeln, die mit einer Wasserglasschicht überzogen sind. DE 10 2004 042535 A1 relates to a molding material mixture for the production of casting molds for metal processing, a process for the production of casting molds, casting molds obtained by the process and their use. For the production of the molds, a refractory mold base and a water glass based binder is used. Added to the binder is a portion of a particulate metal oxide selected from the group consisting of silica, alumina, titania and zinc oxide. WO 98/29208 A1 discloses a process for producing particles coated with a waterglass layer.

In der industriellen Praxis werden heute häufig Hohlkugeln eingesetzt, die aus den Flugaschen von Kohlekraftwerken stammen oder synthetisch hergestellt werden. Für den Einsatz in Speisem geeignete Hohlkugeln sind jedoch nicht uneingeschränkt verfügbar. Es war daher die Aufgabe der vorliegenden Erfindung, einen Leichtfüllstoff anzugeben, der als Ersatz für die derzeit favorisierten Hohlkugeln eingesetzt werden kann. Der anzugebende Leichtfüllstoff sollte dabei die folgenden primären Anforderungen erfüllen:

  • Thermische Stabilität auch bei Temperaturen von mehr als 1450 °C, vorzugsweise bei Temperaturen von mehr als 1500 °C;
  • Ausreichende mechanische Stabilität auch bei hohen Temperaturen von z. B. 1400 °C;
  • Geringe oder keine Staubanhaftung;
  • Geringe Schüttdichte.
In industrial practice, hollow spheres are often used today, which come from the fly ash of coal power plants or are produced synthetically. For use in Speisem suitable hollow balls are not fully available. It was therefore the object of the present invention to provide a lightweight filler, which is a substitute for the currently favored Hollow balls can be used. The specified lightweight filler should meet the following primary requirements:
  • Thermal stability even at temperatures of more than 1450 ° C, preferably at temperatures of more than 1500 ° C;
  • Sufficient mechanical stability even at high temperatures of z. B. 1400 ° C;
  • Little or no dust adhesion;
  • Low bulk density.

Die gestellte Aufgabe wird erfindungsgemäß gelöst durch ein schüttfähiges Füllmaterial umfassend eine Vielzahl von Kern-Hülle-Partikeln zur Verwendung als Füllstoff für Speisermassen zur Herstellung von Speisern, umfassend

  1. (a) einen Trägerkern, der
    eine Größe im Bereich von 30 µm bis 500 µm besitzt
    und
    aus einem Material besteht, das maximal bis zu einer Temperatur von 1400 °C beständig ist und kein Polystyrol enthält,
  2. (b) eine den Kern einschließende Hülle bestehend aus oder umfassend
    • (b1) Partikel mit einem D 50 - Wert für die Korngröße von maximal 15 µm, vorzugsweise maximal 10 µm, die bis zu einer Temperatur von mindestens 1500 °C. vorzugsweise mindestens 1600 °C beständig sind,
      sowie
    • (b2) einem Bindemittel, welches die Partikel aneinander und an den Trägerkern bindet,
wobei das Kern-Hülle-Partikel bis zu einer Temperatur von mindestens 1450 °C, vorzugsweise mindestens 1500 °C beständig ist.The object is achieved according to the invention by a pourable filling material comprising a plurality of core-shell particles for use as a filler for feeder masses for the production of feeders comprising
  1. (a) a carrier core, the
    has a size in the range of 30 microns to 500 microns
    and
    consists of a material which is stable up to a maximum temperature of 1400 ° C and contains no polystyrene,
  2. (b) a core enclosing shell consisting of or comprising
    • (b1) particles having a D 50 value for the grain size of not more than 15 μm, preferably not more than 10 μm, which are up to a temperature of at least 1500 ° C. preferably at least 1600 ° C are stable,
      such as
    • (b2) a binder which binds the particles to each other and to the carrier core,
wherein the core-shell particle is stable up to a temperature of at least 1450 ° C, preferably at least 1500 ° C.

Die Erfindung beruht auf der Erkenntnis, dass es möglich ist, durch Umhüllen Trägermaterialien (die als Trägerkern eingesetzt werden) mit einer z. B. für die Verwendung als Füllstoff in Speisermassen nicht ausreichenden Temperaturbeständigkeit in Kern-Hülle-Partikel zu überführen, die bis zu einer Temperatur von mindestens 1450 °C, üblicherweise aber mindestens 1500 °C beständig sind. Erforderlich ist hierfür das Umhüllen des Trägerkerns mit Partikeln mit einem D 50 - Wert für die Korngröße von maximal 15 µm, die für sich betrachtet bis zu einer Temperatur von mindestens 1500 °C, vorzugsweise 1600 °C beständig sind.The invention is based on the recognition that it is possible by encasing carrier materials (which are used as a carrier core) with a z. B. for use as a filler in Speisermassen insufficient temperature resistance in core-shell particles to convert, which are up to a temperature of at least 1450 ° C, but usually at least 1500 ° C resistant. Required for this is the wrapping of the carrier core with particles having a D 50 - value for the grain size of a maximum of 15 microns, considered per se up to a temperature of at least 1500 ° C, preferably 1600 ° C are resistant.

In den erfindungsgemäß einzusetzenden Kern-Hülle-Partikeln besitzt der Trägerkern eine Größe, d. h. eine maximale Länge im Bereich von 30 µm bis 500 µm; er besteht aus einem Material, das maximal bis zu einer Temperatur von 1400 °C beständig ist und kein Polystyrol enthält, vorzugsweise überhaupt keine organischen, sondern vorzugsweise ausschließlich anorganische Bestandteile. Der Trägerkern ist vorzugsweise sphärisch.In the core-shell particles to be used according to the invention, the carrier core has a size, d. H. a maximum length in the range of 30 μm to 500 μm; it consists of a material which is maximum resistant to a temperature of 1400 ° C and contains no polystyrene, preferably no organic, but preferably exclusively inorganic constituents. The carrier core is preferably spherical.

Im Rahmen des vorliegenden Textes gilt ein Partikel oder Material als beständig, wenn es unterhalb einer gegebenen Temperatur weder schmilzt noch unter Verlust der räumlichen Gestalt erweicht oder sich zersetzt.In the context of the present text, a particle or material is considered to be stable if it neither melts below a given temperature nor softens or decomposes while losing its spatial shape.

Vorzugsweise besteht der Trägerkern (a) eines erfindungsgemäß einzusetzenden Kem-Hülle-Partikels aus einer Keramik oder einem Glas.The carrier core (a) of a core-shell particle to be used according to the invention preferably consists of a ceramic or a glass.

Vorzugsweise ist der Trägerkern (a) eine Hohlkugel oder ein poröses Partikel, wobei Hohlkugel bzw. poröses Partikel wiederum vorzugsweise aus einer Keramik oder einem Glas bestehen. Beispiele für bevorzugte als Trägerkern (a) einsetzbare Materialien sind feinporige Blähgläser, wie sie z. B. unter der Bezeichnung Poraver von der Dennert Poraver GmbH oder z. B. unter der Bezeichnung Omega-Bubbles von der Omega Minerals Germany GmbH erhältlich sind und hohle Glasmikrokugeln, wie sie z. B. unter der Bezeichnung 3M Scotchlite K20 von 3M Specialty Materials erhältlich sind.Preferably, the carrier core (a) is a hollow sphere or a porous particle, hollow sphere or porous particle again preferably consisting of a ceramic or a glass. Examples of preferred usable as the carrier core (a) Materials are fine-pored blown glasses, as they are for. B. under the name Poraver by Dennert Poraver GmbH or z. B. under the name omega bubbles from Omega Minerals Germany GmbH are available and hollow glass microspheres, such as. B. 3M Scotchlite K20 from 3M Specialty Materials available.

In erfindungsgemäß einzusetzenden Kern-Hülle-Partikeln umfassen die besagten Partikel (b1) der Hülle (b) vorzugsweise ein oder mehrere Materialien oder bestehen aus einem oder mehreren Materialien, die ausgewählt sind aus der Gruppe bestehend aus feuerfesten Materialien (gemäß DIN 51060), vorzugsweise aus der Gruppe bestehend aus: Aluminiumoxid, Bornitrid, Siliciumcarbid, Siliciumnitrid, Titanborid, Titanoxid, Yttriumoxid und Zirkonoxid und Mischoxide, z.B. Cordierit oder Mullit.In core-shell particles to be used according to the invention, said particles (b1) of shell (b) preferably comprise one or more materials or consist of one or more materials selected from the group consisting of refractory materials (according to DIN 51060), preferably from the group consisting of: alumina, boron nitride, silicon carbide, silicon nitride, titanium boride, titanium oxide, yttrium oxide and zirconium oxide and mixed oxides, eg Cordierite or mullite.

In erfindungsgemäß einzusetzenden Kern-Hülle-Partikeln ist das Bindemittel (b2) vorzugsweise ausgewählt aus der Gruppe bestehend aus:

  • Cold-Box-Bindemittel, vorzugsweise ein aus einem Benzyletherharz und einem Polyisocyanat herstellbares Polyurethan,
  • Hot-Box-Bindemittel,
  • Stärke,
  • Polysaccharide, und
  • Wasserglas.
In core-shell particles to be used according to the invention, the binder (b2) is preferably selected from the group consisting of:
  • Cold box binder, preferably a polyurethane producible from a benzyl ether resin and a polyisocyanate,
  • Hot box binders,
  • Strength,
  • Polysaccharides, and
  • Water glass.

Erfingdungsgemäß einzusetzende Kem-Hülle-Partikel können eingesetzt werden in feuerfesten Massen oder Materialien, z. B. solchen zur Verwendung im Industrieofenbau oder zur Verbesserung des Brandschutzes in Gebäuden. Sie können auch eingesetzt werden in bzw. als Wärmeisoliermaterialien, z. B. in der Bauindustrie oder der Gießereiindustrie.Kem shell particles to be used according to the invention can be used in refractory materials or materials, eg. As such for use in industrial furnace construction or to improve the fire protection in buildings. They can also be used in or as Wärmeisoliermaterialien, z. In the construction industry or the foundry industry.

Vorzugsweise sind die erfindungsgemäß einzusetzenden Kem-Hülle-Partikel Bestandteil eines schüttfähigen Füllmaterials, das zur Verwendung als Füllstoff für Speisermassen zur Herstellung von Speisem geeignet ist. Ein solches erfindungsgemäßes schüttfähiges Füllmaterial umfasst regelmäßig eine Vielzahl oben beschriebener Kem-Hülle-Partikel (wobei hinsichtlich der bevorzugten Ausgestaltung der Kern-Hülle-Partikel das Vorgesagte gilt) sowie gegebenenfalls weitere Füllsubstanzen.Preferably, the core-shell particles to be used according to the invention are part of a pourable filling material which is suitable for use as a filler for feeder masses for the production of feeds. Such a pourable filling material according to the invention regularly comprises a multiplicity of core-shell particles described above (with the prediction being true with regard to the preferred embodiment of the core-shell particles) and optionally further filling substances.

In einem erfindungsgemäßen schüttfähigen Füllmaterial besitzen die Trägerkeme (a) in der Vielzahl der Kern-Hülle-Partikel für sich betrachtet vorzugsweise eine mittlere Komgröße MK im Bereich von 60 µm bis 380 µm. Die mittlere Komgröße wird dabei gemäß VDG-Merkblatt P27 (Oktober 1999) bestimmt.In a free-flowing filler material according to the invention, the support core (a) in the plurality of core-shell particles, considered individually, preferably has a mean particle size MK in the range from 60 μm to 380 μm. The mean size is determined in accordance with VDG leaflet P27 (October 1999).

Die Schüttdichte der als Trägerkeme eingesetzten Partikel liegt für sich betrachtet vorzugsweise im Bereich von 85 g/L bis 500 g/L. Die Schüttdichte der Trägerkerne (a) wird dabei vorzugsweise vor ihrer Umhüllung mit den Partikeln (b1) und dem Bindemittel (b2) sowie gegebenenfalls weiteren Bestandteilen der Hülle bestimmt. In dem erfindungsgemäßen schüttfähigen Füllmaterial besitzen vorzugsweise zumindest 90 Gew.-% der Partikel (b1) in der Vielzahl der Kem-Hülle-Partikel bezogen auf das Gesamtgewicht der Partikel (b1), eine Teilchengröße von maximal 45 µm. Zur Beschichtung der Trägerkeme (a) sind dementsprechend insbesondere pulverförmige (d. h. feine, polydisperse) Schüttgüter geeignet, bei denen mehr als 90 Gew.-% der im Pulver enthaltenen Partikel eine Teilchengröße von maximal 45 µm besitzen. Die Teilchengröße der Partikel in einem entsprechenden Pulver wird dabei mit Streulichtphotometem bestimmt, z. B. mittels eines Coulter-Streulichtphotometers. Als weitere charakteristische Kennzahl wird dabei häufig ein D50-Wert angegeben, der einer mittleren Korngröße entspricht. Eine Auswahl von Pulvern, welche als Hüllmaterial (Beschichtungsmaterial) zur Umhüllung der Trägerkerne besonders geeignet ist, sind in der nachfolgenden Tabelle zusammengefasst: Al2O3 BN SiC Si3N4 TiB2 TiO2 Y2O3 ZrO2 Schmelzpunkt [°C] ca. 2050 ca. 3000 ca. 2300 Zers. ca. 1900 Zers. ca. 2900 ca. 1850 ca. 2410 ca. 2600 max/µm < 45 < 10 < 45 < 45 < 45 D 50/µm ca. 12 ca. 9 ca. 5 ca.1,5 ca.6,5 "max" bedeutet: 90 Gew.-% der im betreffenden Pulver enthaltenen Partikel besitzt eine Teilchengröße unterhalb des angegebenen Wertes.
"Zers." bedeutet: Zersetzung. The bulk density of the particles used as Trägerkeme by itself is preferably in the range of 85 g / L to 500 g / L. The bulk density of the carrier cores (a) is preferably determined before they are coated with the particles (b1) and the binder (b2) and optionally other constituents of the shell. In the pourable filling material according to the invention, preferably at least 90% by weight of the particles (b1) in the plurality of core-shell particles, based on the total weight of the particles (b1), have a maximum particle size of 45 μm. Accordingly, pulverulent (ie fine, polydisperse) bulk materials are suitable for coating Trägerkeme (a), in which more than 90 wt .-% of the particles contained in the powder have a particle size of at most 45 microns. The particle size of the particles in a corresponding powder is determined with Streulichtphotometem, z. B. by means of a Coulter scattered light photometer. As a further characteristic index often a D50 value is given, which corresponds to a mean grain size. A selection of powders, which is particularly suitable as a coating material (coating material) for coating the carrier cores, are summarized in the following table: Al 2 O 3 BN SiC Si3N4 TiB2 TiO2 Y2O3 ZrO2 Melting point [° C] about 2050 about 3000 about 2300 Zers. ca. 1900 Zers. about 2900 about 1850 about 2410 about 2600 max / micron <45 <10 <45 <45 <45 D 50 / μm about 12 about 9 about 5 ca.1,5 ca.6,5 "max" means: 90% by weight of the particles contained in the powder in question has a particle size below the stated value.
"Dec." means: decomposition.

Ein erfindungsgemäßes schüttfähiges Füllmaterial besitzt vorzugsweise eine Schüttdichte von weniger als 0,6 g/cm3 (d.h. 600 g/L). Ein erfindungsgemäßes schüttfähiges Füllmaterial, welches erfindungsgemäß einzusetzende Kem-Hülle-Partikel umfasst, lässt sich durch Mischen von Trägerkernen (a) mit dem (feuerfesten) Pulver von Partikeln (b1) in Gegenwart eines Bindemittels (b2) herstellen. In einem entsprechenden erfindungsgemäßen Verfahren zur Herstellung eines erfindungsgemäßen schüttfähigen Füllmaterials werden die folgenden Schritte durchgeführt:

  • Bereitstellen von Trägerkernen einer Größe im Bereich von 30 µm bis 500 µm, die aus einem Material bestehen, das maximal bis zu einer Temperatur von 1400 °C beständig ist,
  • Bereitstellen von Partikeln einer mittleren Komgröße von maximal 15 µm, vorzugsweise maximal 10 µm, die bis zu einer Temperatur von mindestens 1500 °C, vorzugsweise mindestens 1600 °C beständig sind,
  • Kontaktieren der Trägerkeme mit den besagten Partikeln in Gegenwart eines Bindemittels, so dass die Partikel an den Trägerkern und aneinander gebunden werden und einzelne oder sämtliche Trägerkeme umhüllt werden.
A pourable filler according to the invention preferably has a bulk density of less than 0.6 g / cm 3 (ie 600 g / L). A pourable filling material according to the invention which comprises core-shell particles to be used according to the invention can be prepared by mixing carrier cores (a) with the (refractory) powder of particles (b1) in the presence of a binder (b2). In a corresponding process according to the invention for producing a free-flowing filler material according to the invention, the following steps are carried out:
  • Providing carrier cores of a size in the range of 30 μm to 500 μm, which consist of a material which is maximum resistant up to a temperature of 1400 ° C,
  • Providing particles of a mean grain size of not more than 15 μm, preferably not more than 10 μm, which are stable up to a temperature of at least 1500 ° C, preferably at least 1600 ° C,
  • Contacting the carrier core with said particles in the presence of a binder such that the particles become bound to the carrier core and to each other and encapsulate single or all of the carrier core.

Hierbei gilt hinsichtlich der Ausgestaltung bevorzugter Trägerkerne, bevorzugter Partikel und bevorzugter Bindemittel das vorstehend mit Blick auf die erfindungsgemäß einzusetzenden Kem-Hülle-Partikel und die erfindungsgemäßen Füllmaterialien gesagte entsprechend.With regard to the configuration of preferred carrier cores, preferred particles and preferred binders, the statements made above with regard to the core-shell particles to be used according to the invention and the filling materials according to the invention apply correspondingly.

Die vorliegende Erfindung betrifft auch eine Speisermasse zur Herstellung von Speisern, bestehend aus oder umfassend: erfindungsgemäß einzusetzende Kem-Hülle-Partikel (wie oben beschrieben, vorzugsweise in einer oben als bevorzugt bezeichneten Ausgestaltung) oder ein erfindungsgemäßes schüttfähiges Füllmaterial (wie vorstehend beschrieben, vorzugsweise in einer vorstehend als bevorzugt bezeichneten Ausgestaltung) sowie ein Bindemittel zum Binden der Kern-Hülle-Partikel bzw. des schüttfähigen Füllmaterials. Hinsichtlich des Bindemittels gelten die vorstehenden Ausführungen zu bevorzugten Bindemitteln für die Kern-Hülle-Partikel entsprechend; bevorzugt ist es, wenn sowohl zum Verbinden der Trägerkeme (a) mit den Partikeln (b1) als auch zum Binden der Kern-Hülle-Partikel bzw. des schüttfähigen Materials ein Cold-Box-Bindemittel (vorzugsweise jeweils auf Basis eines Benzyletherharzes und eines Polyisocyanats), besonders bevorzugt ein identisches Bindemittel eingesetzt wird.The present invention also relates to a feeder mass for the production of feeders, consisting of or comprising: core-shell particles to be used according to the invention (as described above, preferably in an embodiment described above as preferred) or a pourable filler material according to the invention (as described above, preferably in US Pat an embodiment referred to above as preferred) and a binder for bonding the core-shell particles or the pourable filling material. With respect to the binder, the above statements apply to preferred binders for the core-shell particles accordingly; It is preferred if both for connecting the Trägerkeme (a) with the particles (b1) and for binding the core-shell particles or the pourable material, a cold-box binder (preferably each based on a benzyl ether resin and a polyisocyanate ), particularly preferably an identical binder is used.

Eine erfindungsgemäße Speisermasse kann als exotherme Speisermasse ausgestaltet sein und umfasst dann regelmäßig zusätzlich zu den genannten Bestandteilen ein leicht oxidierbares Metall und ein Oxidationsmittel dafür, welche zur exothermen Umsetzung miteinander bestimmt sind.An edible mass according to the invention can be designed as an exothermic feeder mass and then regularly comprises, in addition to the constituents mentioned, an easily oxidizable metal and an oxidizing agent therefor, which are intended for exothermic reaction with one another.

Die vorliegende Erfindung betrifft auch Speiser, die eine erfindungsgemäße Speisermasse umfassen. Erfindungsgemäße Speiser besitzen vorzugsweise eine Dichte von weniger als 0,7 g/cm3.The present invention also relates to feeders comprising a feeder mass according to the invention. Feeders according to the invention preferably have a density of less than 0.7 g / cm 3 .

Weitere Aspekte der vorliegenden Erfindung betreffen die Verwendung erfindungsgemäßen schüttfähigen Füllmaterials (wie oben beschrieben, vorzugsweise in einer als bevorzugt angegebenen Ausgestaltung) als isolierendes Füllmaterial in einer Speisermasse oder in einem Speiser.Further aspects of the present invention relate to the use of the pourable filling material according to the invention (as described above, preferably in a preferred embodiment) as an insulating filling material in a feeder mass or in a feeder.

Des weiteren betrifft die vorliegende Erfindung auch die Verwendung einer erfindungsgemäßen Speisermasse zur Herstellung eines isolierenden oder exothermen Speisers.Furthermore, the present invention also relates to the use of a feeder mass according to the invention for producing an insulating or exothermic feeder.

Zur Herstellung eines erfindungsgemäßen Speisers wird ein erfindungsgemäßes schüttfähiges. Füllmaterial, ein erfindungsgemäß geeignetes Bindemittel (z. B. Cold-Box-Bindemittel, siehe oben) sowie gegebenenfalls weitere Bestandteile gemischt, die resultierende Mischung zu einer Speiser geformt und der geformte Speiser ausgehärtet. Der Vorgang des Formens erfolgt dabei vorzugsweise nach dem Slurry-Verfahren, dem Grünstandverfahren, dem Cold-Box-Verfahren oder dem Hot-Box-Verfahren.For the production of a feeder according to the invention is a pourable according to the invention. Filling material, a binder suitable according to the invention (for example, cold box binder, see above) and optionally mixed other ingredients, the resulting mixture is formed into a feeder and cured the shaped feeder. The molding process preferably takes place by the slurry process, the green state process, the cold box process or the hot box process.

Die Erfindung wird nachfolgend anhand von Beispielen näher erläutert:The invention is explained in more detail below with reference to examples:

A Herstellung erfindungsgemäß einzusetzender Kem-Hülle-Partikel (Schüttgut)A Preparation of core-shell particles to be used according to the invention (bulk material) Ausführuncisbeispiel 1Embodiment 1

In einem Mischer des Typs BOSCH Profi 67 werden als Trägermaterial 700 g Poraver (Standard-Korngröße 0,1-0,3; Dennert Poraver GmbH) vorgelegt und mit 120 g Cold-Box-Binder (Fa. Hüttenes-Albertus: Benzyletherharz auf Basis von Aktivator 6324 / Gasharz 6348) gleichmäßig benetzt. 300 g Siliziumcarbidpulver (D 50-Wert für Korngröße: < 5µm) werden zugegeben und das Ganze homogen gemischt. Schließlich werden zur Aushärtung des Binders ca. 0,5 ml Dimethylpropylamin zugesetzt. Nach wenigen Sekunden liegen die gebildeten Kern-Hülle-Partikel als Schüttgut zur weiteren Verwendung vor.700 g of Poraver (standard grain size 0.1-0.3, Dennert Poraver GmbH) are initially charged in a BOSCH Profi 67 mixer and mixed with 120 g of cold box binder (Hüttenes-Albertus: benzyl ether resin based on of activator 6324 / gas resin 6348). 300 g of silicon carbide powder (D 50 value for grain size: <5 microns) are added and the whole mixed homogeneously. Finally, about 0.5 ml of dimethylpropylamine are added to cure the binder. After a few seconds they are formed core-shell particles as bulk material for further use.

Ausführungsbeispiel 2Embodiment 2

Als Trägerkern werden in einem geeigneten Mischer des Typs BOSCH Profi 67 werden als Trägermaterial 800 g Omega-Bubbles (Fa. Omega Minerals GmbH; Korngröße < 0,5 mm) vorgelegt und mit 120 g Cold-Box-Binder (Fa. Hüttenes-Albertus: Benzyletherharz auf Basis von Aktivator 6324 / Gasharz 6348) gleichmäßig benetzt. 200 g Aluminiumoxidpulver (D 50-Wert für Korngröße: ca. 12 µm) werden zugegeben und das Ganze homogen gemischt. Schließlich werden zur Aushärtung des Binders ca. 0,5 ml Dimethylpropylamin zugesetzt. Nach wenigen Sekunden liegen die gebildeten Kern-Hülle-Hülle-Partikel als Schüttgut zur weiteren Verwendung vor.The carrier core used is 800 g of omega bubbles (from Omega Minerals GmbH, grain size <0.5 mm) as the carrier material in a suitable mixer of the type BOSCH Profi 67, and 120 g of Cold Box binder (Hüttenes-Albertus : Benzyl ether resin based on activator 6324 / gas resin 6348) evenly wetted. 200 g of alumina powder (D 50 value for grain size: about 12 microns) are added and the whole mixed homogeneously. Finally, about 0.5 ml of dimethylpropylamine are added to cure the binder. After a few seconds, the core-shell-shell particles formed are present as bulk material for further use.

B Herstellung von Speisermassen sowie Speiserkappen und sonstigen Profilkörpern:B Production of feeder compounds and feeder caps and other profiled bodies: Ausführungsbeispiel "isolierend"Embodiment "insulating"

Das nach Ausführungsbeispiel 1 bzw. 2 hergestellte Schüttgut wird mit Cold-Box-Bindemittel (Fa. Hüttenes-Albertus: Benzyletherharz auf Basis von Aktivator 6324 / Gasharz 6348) homogen vermischt. Aus der resultierenden Mischung werden Speiserkappen und andere Profilformkörper (a) gestampft sowie (b) mit Kernschießmaschinen (z.B. Röper, Laempe) geschossen. Die Aushärtung erfolgt jeweils durch Zusatz von Dimethylpropylamin.The bulk material produced according to embodiment 1 or 2 is homogeneously mixed with cold box binder (Hüttenes-Albertus: benzyl ether resin based on activator 6324 / gas resin 6348). From the resulting mixture, feeder caps and other profile tablets (a) are stamped and (b) shot with core shooters (e.g., Röper, Laempe). Curing takes place in each case by addition of dimethylpropylamine.

Ausführungsbeispiel "exotherm-isolierend"Exemplary embodiment "exothermic insulating"

Eine Mischung aus 30 GT (Gewichtsteilen) des nach Ausführungsbeispiel 1 bzw. 2 hergestellten Schüttgutes und 70 GT eines üblichen aluminothermischen Gemischs wird mit Cold-Box-Bindemittel (Fa. Hüttenes-Albertus: Benzyletherharz auf Basis von Aktivator 6324 / Gasharz 6348) homogen vermischt. Aus der resultierenden Mischung werden Speiserkappen und andere Profilformkörper (a) gestampft sowie (b) mit Kernschießmaschinen (z.B. Röper, Laempe) geschossen. Die Aushärtung erfolgt jeweils durch Zusatz von Dimethylpropylamin.A mixture of 30 parts by weight (by weight) of the bulk material produced according to Example 1 and 2 and 70 parts by weight of a conventional aluminothermic mixture is homogeneously mixed with cold box binder (Hüttenes-Albertus: benzyl ether resin based on activator 6324 / gas resin 6348) , From the resulting mixture are feeder caps and others Profile molding (a) tamped and (b) shot with core shooting machines (eg Röper, Laempe). Curing takes place in each case by addition of dimethylpropylamine.

C Würfelversuche:C die trials:

Speiserkappen gemäß den Ausführungsbeispielen aus B wurden mit sogenannten Würfelversuchen auf ihre anwendungstechnische Brauchbarkeit überprüft. In diesen Versuchen soll ein Gussteil in Form eines Würfels, bei Verwendung einer modulgerechten Speiserkappe lunkerfrei sein.Feeder caps according to the embodiments of B were checked with their so-called cube tests on their applicability. In these experiments, a casting in the form of a cube, using a module-compatible feeder cap to be void-free.

Eine sicherere Dichtspeisung konnte für sämtliche Ausführungsformen ("isolierend", Ausführungsbeispiele 1 und 2; "exotherm-isolierend"; Ausführungsbeispiele 1 und 2) nachgewiesen werden. Auch in den jeweiligen Restspeisern (oberhalb der Würfel) wurde jeweils ein gegenüber Vergleichsspeiserkappen verbessertes Lunkerverhalten festgestellt.A safer density feed could be detected for all embodiments ("insulating", embodiments 1 and 2, "exothermic insulating", embodiments 1 and 2). Also in the respective residual feeders (above the cubes) in each case one compared to reference feeders improved voiding behavior was determined.

Claims (14)

  1. A free flowing filler material for use as a filler for feeder masses for the production of feeders, comprising a plurality of core-shell particles comprising
    (a) a carrier core which
    has a size ranging from 30 µm to 500 µm and
    consists of a material which is stable up to a maximum temperature of 1400 °C and contains no polystyrene,
    (b) a shell enveloping the core and consisting of or comprising
    (b1) particles with a D 50 particle size value of a maximum of 15 µm which are stable up to a temperature of at least 1500 °C
    and
    (b2) a binder which binds the particles to one another and to the carrier core,
    wherein the core-shell particle being stable up to a temperature of at least 1450 °C.
  2. A free flowing filler material according to Claim 1, wherein the carrier core (a) consists of ceramic or glass.
  3. A free flowing filler material according to one of the preceding claims, wherein the carrier core (a) is a hollow sphere or a porous particle.
  4. A free flowing filler material according to one of the preceding claims, wherein said particles (b1) of the shell (b) comprise one or more materials or consist of one or more materials which are selected from the group consisting of refractory materials, and preferably from the group consisting of: aluminium oxide, boron nitride, silicon carbide, silicon nitride, titanium boride, titanium oxide, yttrium oxide and zirconium oxide.
  5. A free flowing filler material according to one of the preceding claims, wherein the binder (b2) is selected from the group consisting of:
    - cold box binder, preferably a polyurethane which can be prepared from a benzyl ether resin and a polyisocyanate,
    - hot box binder,
    - starch,
    - polysaccharides, and
    - water glass.
  6. A free flowing filler material according to one of the preceding claims, wherein the carrier cores (a) in the plurality of core-shell particles have a mean particle size MPS ranging from 60 µm to 380 µm.
  7. A free flowing filler material according to one of the preceding claims, wherein at least 90% by weight of the particles (b1) in the plurality of core-shell particles, based on the total weight of the particles (b1), have a particle size of a maximum of 45 µm.
  8. A free flowing filler material according to one of the preceding claims, wherein the filler material has a bulk density of less than 0.6 g/cm3, preferably of less than 0.5 g/cm3.
  9. A process for the preparation of a free flowing filler material according to one of Claims 1 to 8, with the following steps:
    - providing carrier cores with a size ranging from 30 µm to 500 µm which consist of a material which is stable up to a maximum temperature of 1400 °C and does not contain polystyrene,
    - providing particles with a mean particle size of a maximum of 15 µm which are stable up to a temperature of at least 1500 °C, preferably at least 1600 °C,
    - bringing the carrier cores into contact with said particles in the presence of a binder so that the particles are bound to the carrier core and to one another and some or all of the carrier cores are coated.
  10. A feeder mass for the production of feeders, which consists of or comprises:
    - a free flowing filler material according to one of Claims 1 to 8,
    and
    - a binder for binding the free flowing filler material.
  11. A feeder comprising a feeder mass according to Claim 10.
  12. A feeder according to Claim 11, with a density of less than 0.7 g/cm3.
  13. The use of a free flowing filler material according to one of Claims 1 to 8 as an insulating filler material in a feeder mass or a feeder.
  14. The use of a feeder mass according to Claim 10 for the production of an insulating or exothermic feeder.
EP08717855A 2007-03-16 2008-03-14 Core-sheath particle for use as a filler for feeder masses Active EP2139626B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200830596T SI2139626T1 (en) 2007-03-16 2008-03-14 Core-sheath particle for use as a filler for feeder masses
PL08717855T PL2139626T3 (en) 2007-03-16 2008-03-14 Core-sheath particle for use as a filler for feeder masses

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007012660A DE102007012660B4 (en) 2007-03-16 2007-03-16 Core-shell particles for use as filler for feeder masses
PCT/EP2008/053114 WO2008113765A1 (en) 2007-03-16 2008-03-14 Core-sheath particle for use as a filler for feeder masses

Publications (2)

Publication Number Publication Date
EP2139626A1 EP2139626A1 (en) 2010-01-06
EP2139626B1 true EP2139626B1 (en) 2012-02-08

Family

ID=39332204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08717855A Active EP2139626B1 (en) 2007-03-16 2008-03-14 Core-sheath particle for use as a filler for feeder masses

Country Status (22)

Country Link
US (1) US9352385B2 (en)
EP (1) EP2139626B1 (en)
JP (1) JP5361073B2 (en)
KR (1) KR101429144B1 (en)
CN (1) CN101657281B (en)
AT (1) ATE544545T1 (en)
AU (1) AU2008228269B2 (en)
BR (1) BRPI0808307B1 (en)
CA (1) CA2681125C (en)
DE (1) DE102007012660B4 (en)
DK (1) DK2139626T3 (en)
ES (1) ES2379207T3 (en)
HR (1) HRP20120201T1 (en)
MX (1) MX2009009887A (en)
PL (1) PL2139626T3 (en)
PT (1) PT2139626E (en)
RU (1) RU2466821C2 (en)
SI (1) SI2139626T1 (en)
TW (1) TWI440513B (en)
UA (1) UA100511C2 (en)
WO (1) WO2008113765A1 (en)
ZA (1) ZA200906588B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015120866A1 (en) 2015-12-01 2017-06-01 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Process for producing refractory composite particles and feeder elements for the foundry industry, corresponding feeder elements and uses
DE102016202795A1 (en) 2016-02-23 2017-08-24 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Use of a composition as a binder component for the preparation of feeder elements by the cold-box process, corresponding processes and feeder elements
DE102020131492A1 (en) 2020-11-27 2022-06-02 Chemex Foundry Solutions Gmbh Manufacturing process, casting moulds, cores or feeders as well as kit and process for producing a metal casting.

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102199040B (en) * 2011-02-16 2013-03-20 朱晓明 Novel sink head brick and its processing technology
JP6045929B2 (en) * 2012-02-02 2016-12-14 日東電工株式会社 Flame retardant thermal conductive adhesive sheet
KR101411390B1 (en) * 2012-08-07 2014-06-25 주식회사 포스코 Bender bush mounting and demounting apparatus of continuous casting apparatus
CN103624208A (en) * 2012-08-25 2014-03-12 天津湶钰冒口有限公司 Hot core box molding technology of riser for casting
CN103480826B (en) * 2012-12-20 2016-03-02 江苏凯特汽车部件有限公司 A kind of pressure cast aluminum-alloy wheel thermal-insulation ceramic cup capable
DE102015201614A1 (en) 2014-09-10 2016-03-10 Hüttenes-Albertus Chemische Werke GmbH Two-component binder system for the polyurethane cold box process
DE102016203896A1 (en) 2016-03-09 2017-09-14 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Two-component binder system for the polyurethane cold box process
DE102016211948A1 (en) 2016-06-30 2018-01-04 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Core-shell particles for use as filler for feeder masses
FR3054149B1 (en) 2016-07-22 2019-04-05 Safran PROCESS FOR PRODUCING CARAPACE MOLD
CN106493284B (en) * 2016-11-24 2018-03-02 武汉科技大学 A kind of core shell structure spherical quartz molding sand and preparation method thereof
CN107335782A (en) * 2017-08-19 2017-11-10 江苏标新工业有限公司 A kind of covering flux of ingot casting high-efficiency cleaning and preparation method thereof
CN107598090A (en) * 2017-08-24 2018-01-19 合肥正明机械有限公司 A kind of Steel Casting Risers coverture
DE102017131255A1 (en) 2017-12-22 2019-06-27 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung A method of making a metallic casting or a cured molding using aliphatic polymers comprising hydroxy groups
CN108465778A (en) * 2018-02-05 2018-08-31 霍山县东胜铸造材料有限公司 A kind of heat preservation riser buss
DE102018121769A1 (en) 2018-09-06 2020-03-12 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Process for producing a metallic casting or a hardened molded part using an aliphatic binder system
DE102018133239A1 (en) 2018-12-20 2020-06-25 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Isocyanate composition and binder system containing this isocyanate composition
DE102019106021A1 (en) 2019-03-08 2020-09-10 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Formaldehyde scavenger for binder systems
CN112624766B (en) * 2020-12-29 2021-11-16 哈尔滨工业大学 Preparation method of silicon nitride @ silicon carbide @ boron nitride composite fiber felt

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01237049A (en) * 1988-03-17 1989-09-21 Shin Nippon Kagaku Kogyo Co Ltd Heat insulating refractory grain for molten metal
JPH0241746A (en) * 1988-07-30 1990-02-09 N T C:Kk Heat insulating material for molten metal and manufacture thereof
WO2006058347A2 (en) * 2004-11-25 2006-06-01 Alistair Allardyce Elrick Heat resistant bead

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2624556A (en) * 1950-12-02 1953-01-06 Norton Co Heat exchange pebble
DE2121353A1 (en) 1971-04-30 1972-11-09 Baur, Eduard, Dipl.-Ing., 5256 Waldbruch Casting mould riser insert - made from globular insulating material giving improved casting
JPS5841931B2 (en) * 1978-01-25 1983-09-16 福島製鋼株式会社 casting mold
GB9308363D0 (en) 1993-04-22 1993-06-09 Foseco Int Refractory compositions for use in the casting of metals
JPH08117925A (en) * 1994-10-24 1996-05-14 Foseco Japan Ltd:Kk Heat insulating pad for casting, its production and material for producing the pad
JPH0999340A (en) * 1995-10-03 1997-04-15 Sugitani Kinzoku Kogyo Kk Die member for casting metal, and aggregate used for the die member
BR9601454C1 (en) 1996-03-25 2000-01-18 Paulo Roberto Menon Process for the production of exothermic and insulating gloves.
DE19617938A1 (en) * 1996-04-27 1997-11-06 Chemex Gmbh Feeder inserts and their manufacture
ES2134729B1 (en) 1996-07-18 2000-05-16 Kemen Recupac Sa IMPROVEMENTS INTRODUCED IN OBJECT APPLICATION FOR A SPANISH INVENTION PATENT N. 9601607 FOR "PROCEDURE FOR THE MANUFACTURE OF EXACT SLEEVES AND OTHER ELEMENTS OF MAZAROTAJE AND FEEDING FOR CAST MOLDS.
DK172825B1 (en) * 1996-12-18 1999-08-02 Dti Ind A process for preparing particles coated with a layer of water glass and of blanks comprising such coated particles.
DK0891954T3 (en) * 1996-12-27 2004-08-09 Iberia Ashland Chem Sa Mold sand suitable for making cores and molds
US6114410A (en) * 1998-07-17 2000-09-05 Technisand, Inc. Proppant containing bondable particles and removable particles
JP3374242B2 (en) * 1998-10-09 2003-02-04 正光 三木 Exothermic assembly for castings
DE19925167A1 (en) 1999-06-01 2000-12-14 Luengen Gmbh & Co Kg As Exothermic feeder mass
GB0003857D0 (en) * 2000-02-19 2000-04-05 Gough Michael J Refractory compositions
US20020070020A1 (en) * 2000-12-08 2002-06-13 Nguyen Philip D. Completing wells in unconsolidated formations
US20030234093A1 (en) * 2002-06-20 2003-12-25 Aufderheide Ronald C. Process for casting a metal
DE102004042535B4 (en) 2004-09-02 2019-05-29 Ask Chemicals Gmbh Molding material mixture for the production of casting molds for metal processing, process and use
DE102005011644A1 (en) * 2005-03-14 2006-09-21 AS Lüngen GmbH & Co. KG Exothermic and insulating feeder inserts with high gas permeability
DE102005025771B3 (en) 2005-06-04 2006-12-28 Chemex Gmbh Insulating feeder and process for its preparation
DE102006011530A1 (en) * 2006-03-10 2007-09-13 Minelco Gmbh Mold or molding, foundry-molding material mixture and process for its preparation
DE102006036381A1 (en) 2006-08-02 2008-02-07 Minelco Gmbh Molded material, foundry-molding material mixture and method for producing a mold or a molded article

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01237049A (en) * 1988-03-17 1989-09-21 Shin Nippon Kagaku Kogyo Co Ltd Heat insulating refractory grain for molten metal
JPH0241746A (en) * 1988-07-30 1990-02-09 N T C:Kk Heat insulating material for molten metal and manufacture thereof
WO2006058347A2 (en) * 2004-11-25 2006-06-01 Alistair Allardyce Elrick Heat resistant bead

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015120866A1 (en) 2015-12-01 2017-06-01 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Process for producing refractory composite particles and feeder elements for the foundry industry, corresponding feeder elements and uses
DE102016202795A1 (en) 2016-02-23 2017-08-24 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Use of a composition as a binder component for the preparation of feeder elements by the cold-box process, corresponding processes and feeder elements
WO2017144363A1 (en) 2016-02-23 2017-08-31 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Use of a composition as a binder component for producing feeder elements according to the cold box process, corresponding method, and feeder elements
DE102020131492A1 (en) 2020-11-27 2022-06-02 Chemex Foundry Solutions Gmbh Manufacturing process, casting moulds, cores or feeders as well as kit and process for producing a metal casting.
WO2022112515A1 (en) 2020-11-27 2022-06-02 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Production method, casting moulds, cores or feeders and kit and method for production of a metallic casting

Also Published As

Publication number Publication date
CN101657281B (en) 2013-01-02
CA2681125A1 (en) 2008-09-25
DE102007012660B4 (en) 2009-09-24
EP2139626A1 (en) 2010-01-06
ES2379207T3 (en) 2012-04-23
CA2681125C (en) 2015-01-20
SI2139626T1 (en) 2012-05-31
MX2009009887A (en) 2010-02-12
BRPI0808307A2 (en) 2014-07-08
TWI440513B (en) 2014-06-11
UA100511C2 (en) 2013-01-10
PT2139626E (en) 2012-03-22
AU2008228269B2 (en) 2013-03-14
BRPI0808307B1 (en) 2017-07-04
RU2466821C2 (en) 2012-11-20
WO2008113765A1 (en) 2008-09-25
DK2139626T3 (en) 2012-02-27
US9352385B2 (en) 2016-05-31
HRP20120201T1 (en) 2012-03-31
CN101657281A (en) 2010-02-24
JP2010521316A (en) 2010-06-24
KR101429144B1 (en) 2014-08-11
RU2009138236A (en) 2011-04-27
US20110315911A1 (en) 2011-12-29
KR20090120516A (en) 2009-11-24
JP5361073B2 (en) 2013-12-04
ATE544545T1 (en) 2012-02-15
PL2139626T3 (en) 2012-07-31
DE102007012660A1 (en) 2008-09-18
AU2008228269A1 (en) 2008-09-25
ZA200906588B (en) 2012-03-28
TW200936271A (en) 2009-09-01

Similar Documents

Publication Publication Date Title
EP2139626B1 (en) Core-sheath particle for use as a filler for feeder masses
EP2734321B1 (en) Feeder and shapeable composition for production thereof
EP2916976B1 (en) Method for producing lost cores or molded parts for the production of cast parts
EP1934001B1 (en) Borosilicate glass-containing molding material mixtures
EP1728571B1 (en) Insulated feeder head and method of making same
EP3383565B1 (en) Method for producing refractory composite particles and feeder elements for the foundry industry, corresponding feeder elements and uses
EP1868753B1 (en) Exothermic and insulating feeder insert have high gas permeability
DE102017111849A1 (en) Process for the production of insulating material or an insulating product for the refractory industry, corresponding insulating materials and products as well as uses
EP3478427A1 (en) Core-shell particles for use as a filler for feeder compositions
DE10104289B4 (en) Formable exothermic compositions and feeders made therefrom
EP3478643B1 (en) Heat insulating refractory moulded body, particularly a panel, and method for producing same and use of same
DE102016112044B4 (en) Use of a heat-insulating plate for insulating molten metal from the atmosphere or a metallurgical vessel
DE102016015852B4 (en) Use of a heat-insulating molded body
DE1458102B2 (en) Process for the production of shell molds

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20091016

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20100623

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 544545

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120215

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. AG PATENT- UND MARKENANWAELTE VSP

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: HR

Ref legal event code: TUEP

Ref document number: P20120201

Country of ref document: HR

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20120309

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REG Reference to a national code

Ref country code: HR

Ref legal event code: T1PR

Ref document number: P20120201

Country of ref document: HR

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502008006344

Country of ref document: DE

Effective date: 20120405

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2379207

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20120423

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20120208

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20120400955

Country of ref document: GR

Effective date: 20120518

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: HR

Payment date: 20120229

Year of fee payment: 5

REG Reference to a national code

Ref country code: SK

Ref legal event code: T3

Ref document number: E 11635

Country of ref document: SK

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20120208

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E013513

Country of ref document: HU

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120208

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120608

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120208

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120208

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120331

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120208

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20121109

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502008006344

Country of ref document: DE

Effective date: 20121109

REG Reference to a national code

Ref country code: HR

Ref legal event code: ODRP

Ref document number: P20120201

Country of ref document: HR

Payment date: 20130311

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: RO

Payment date: 20130313

Year of fee payment: 6

Ref country code: LU

Payment date: 20130320

Year of fee payment: 6

Ref country code: HU

Payment date: 20130311

Year of fee payment: 6

Ref country code: DK

Payment date: 20130320

Year of fee payment: 6

Ref country code: SE

Payment date: 20130319

Year of fee payment: 6

Ref country code: BG

Payment date: 20130322

Year of fee payment: 6

Ref country code: IE

Payment date: 20130315

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 20130319

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20120309

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120208

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20140915

REG Reference to a national code

Ref country code: HR

Ref legal event code: PBON

Ref document number: P20120201

Country of ref document: HR

Effective date: 20140314

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

Effective date: 20140331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140314

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: GR

Ref legal event code: ML

Ref document number: 20120400955

Country of ref document: GR

Effective date: 20141002

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140315

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140915

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140314

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141002

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140314

Ref country code: BG

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140315

Ref country code: HR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140314

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140331

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NO

Payment date: 20160321

Year of fee payment: 9

Ref country code: NL

Payment date: 20160322

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20160318

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20170327

Year of fee payment: 10

REG Reference to a national code

Ref country code: NO

Ref legal event code: MMEP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170314

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20170401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170401

Ref country code: NO

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170331

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20180322

Year of fee payment: 11

Ref country code: AT

Payment date: 20180320

Year of fee payment: 11

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008006344

Country of ref document: DE

Representative=s name: EISENFUEHR SPEISER PATENTANWAELTE RECHTSANWAEL, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502008006344

Country of ref document: DE

Owner name: CHEMEX FOUNDRY SOLUTIONS GMBH, DE

Free format text: FORMER OWNER: CHEMEX GMBH, 31073 DELLIGSEN, DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20180314

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180314

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFUS

Owner name: CHEMEX FOUNDRY SOLUTIONS GMBH, DE

Free format text: FORMER OWNER: CHEMEX GMBH, DE

REG Reference to a national code

Ref country code: BE

Ref legal event code: PD

Owner name: CHEMEX FOUNDRY SOLUTIONS GMBH; DE

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), FUSION; FORMER OWNER NAME: CHEMEX GMBH

Effective date: 20190308

REG Reference to a national code

Ref country code: SK

Ref legal event code: PC4A

Ref document number: E 11635

Country of ref document: SK

Owner name: CHEMEX FOUNDRY SOLUTIONS GMBH, DELLIGSEN, DE

Free format text: FORMER OWNER: CHEMEX GMBH, DELLIGSEN, DE

Effective date: 20190521

REG Reference to a national code

Ref country code: SI

Ref legal event code: SP73

Owner name: CHEMEX FOUNDRY SOLUTIONS GMBH; DE

Effective date: 20190510

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 544545

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190314

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190314

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190331

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20200325

Year of fee payment: 13

REG Reference to a national code

Ref country code: SI

Ref legal event code: KO00

Effective date: 20201113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200315

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20210119

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SK

Payment date: 20210303

Year of fee payment: 14

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210331

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210331

REG Reference to a national code

Ref country code: SK

Ref legal event code: MM4A

Ref document number: E 11635

Country of ref document: SK

Effective date: 20220314

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220314

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230320

Year of fee payment: 16

Ref country code: CZ

Payment date: 20230303

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230331

Year of fee payment: 16

Ref country code: ES

Payment date: 20230414

Year of fee payment: 16

Ref country code: DE

Payment date: 20230405

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220314

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20240329

Year of fee payment: 17