WO1994022151A1 - Composition contenant de la poudre de fer comme constituant magnetique et un liant - Google Patents

Composition contenant de la poudre de fer comme constituant magnetique et un liant Download PDF

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Publication number
WO1994022151A1
WO1994022151A1 PCT/EP1994/000714 EP9400714W WO9422151A1 WO 1994022151 A1 WO1994022151 A1 WO 1994022151A1 EP 9400714 W EP9400714 W EP 9400714W WO 9422151 A1 WO9422151 A1 WO 9422151A1
Authority
WO
WIPO (PCT)
Prior art keywords
composition according
powder
composition
iron
binder
Prior art date
Application number
PCT/EP1994/000714
Other languages
German (de)
English (en)
Inventor
Franz-Bernhard Knop
Manfred Leder
Udo Frank WINDHÖVEL
Thomas Tamcke
Original Assignee
Henkel Kommanditgesellschaft Auf Aktien
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
Priority claimed from DE19934308099 external-priority patent/DE4308099A1/de
Priority claimed from DE4314522A external-priority patent/DE4314522A1/de
Application filed by Henkel Kommanditgesellschaft Auf Aktien filed Critical Henkel Kommanditgesellschaft Auf Aktien
Publication of WO1994022151A1 publication Critical patent/WO1994022151A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/48—Stabilisers against degradation by oxygen, light or heat
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00422—Magnetic properties
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals

Definitions

  • composition with iron powder as a magnetically active component and a binder Composition with iron powder as a magnetically active component and a binder
  • the invention relates to a composition which contains iron powder and a binder as a magnetically active component. It is used for coating walls, ceilings, floors and other substrates on which coverings with magnets are to be attached easily and simply.
  • Such a composition is known as a filler for fastening decorations by magnetic forces.
  • DE 2620095 describes a method for attaching easily replaceable surface decorations made of stone, ceramic, wood, metal and the like to wall, ceiling and / or floor surfaces made of the same and / or different materials. For this it is necessary to apply one layer of iron powder to one surface and a layer of binder highly filled with magnetic powder to the other surface and to allow it to harden. After magnetization, the decoration can be attached due to the magnetic effect.
  • Putties made of iron powder and inorganic or organic binders are described. The following are mentioned as inorganic binders: gypsum, fine plaster and cement.
  • Liquid plastic compositions preferably in non-aqueous form, are used as organic binders, for example alkyd resins, epoxy resins, polyurethanes and polymers based on vinyl and / or acrylic compounds.
  • FR 2250394 relates to the use of a tinned metal mesh for the magnetic connection of any materials.
  • the sieve should be glued to a wooden board during its manufacture.
  • the wooden board can serve as an intermediate wall on which a decorative cladding with permanent magnets glued on can be attached. Rubber is mentioned as the adhesive.
  • a pattern made of plaster is also described, which represents a prefabricated intermediate wall into which a magnet with rubber has been integrated.
  • DE 40 16939 relates to a method for the reversible fastening of floor and wall coverings by magnetic adhesion.
  • a magnetic coating or a magnetic film to be glued or self-adhesive should be applied once to magnetically non-adhesive substrates.
  • the known compositions for the leveling compounds with reaction resins and in particular epoxy resins as binders have the disadvantage that they can only be processed for a limited time (pot life) and are difficult to elapse due to their great toughness.
  • An addition of solvent would help, but would also give rise to problems with the exhaust air. They are not suitable for the mechanical coating of raised floor elements.
  • very smooth surfaces are obtained, on which the covering can be moved relatively easily due to the low frictional forces.
  • the iron powder will rust, especially if the epoxy content is low, so as to save costs.
  • the rusting not only leads to discoloration of the coating, but above all to a reduction in its hardness and magnetic adhesion.
  • the object of the invention is therefore to find an easy-to-process composition which can be applied not only with the spatula, but also, for example, with a roller and which gives a permanent, effective substrate for magnetically active coverings.
  • the solution according to the invention can be found in the patent claims. It consists essentially in the fact that the ferromagnetic materials, the rust preventives and the binders are stored in the form of a powder mixture and, shortly before use, add water in a few minutes to ready-to-use compositions which, after their application and drying, adhere to many substrates.
  • Initial concerns about working with an aqueous dispersion, since segregation can easily occur during storage due to the relatively high specific weight of iron and, moreover, this particularly easily rusts in an aqueous medium have been overcome. It was possible to produce a coating with relatively little binder, which nevertheless adheres sufficiently well to many substrates.
  • the solution according to the invention consists of a composition of the following components:
  • a substance is considered to be "ferromagnetic” if it acts magnetically under the influence of an external magnetic field. Iron powder is preferred. Magnetic iron (Fe3Ü4) is also an option. It has the advantage of not rusting. It is therefore not necessary to add components B) and C).
  • the grain size depends on the processing conditions and the intended use and can be determined with a few routine tests. Essentially the same standards are to be applied as for the fillers.
  • Metals are less noble than iron if their normal potential in volts, measured against the normal hydrogen electrode at 25 ° C, is less than that of Fe / Fe ++ , i.e. less than -0.44 volts.
  • Fe / Fe ++ i.e. less than -0.44 volts.
  • zinc with a normal potential of -0.76 volts is of particular interest. The less noble metals cause a surface passivation of the iron through element formation.
  • the alkaline substances should have a pH of more than 9, in particular 10 to 12.
  • calcium hydroxide and cement are particularly suitable, especially Portland cement or metallurgical cements (Eisenportland cement, blast furnace cement). At the same time, they also act as inorganic binders.
  • the "redispersible polymers” are powders which are usually obtained from dispersions by spray drying and in aqueous media at room temperature, optionally with stirring, in a few minutes, preferably within 3 minutes, again in a dispersion.
  • Suitable redispersible polymers are, for example, homopolymers and copolymers of acrylates or methacrylates with, for example, styrene.
  • the alcohol component of the esters should contain 1 to 4 carbon atoms.
  • preferred redispersible polymers are homopolymers and copolymers of vinyl esters, the carboxylic acid containing 2 to 4, in particular 2, carbon atoms, with the copolymers ethylene and maleinates, the Alcohol component contains 1 to 4 carbon atoms.
  • Casein is also used. It is insoluble in water, but in alkaline solution. The casein powder is preferably broken down with alkali hydroxides, borax and especially with lime milk or cement. Good water resistance can be obtained with casein. Bone glues are
  • redispersible polymers are those based on vinyl acetate, vinyl acetate / ethylene, vinyl acetate / ethylene / vinyl acid and styrene / acrylate. Manufacturers are Wacker (Vinnapas), addition (Mowilith), Ebnöther (Elotex), Rohm & Haas, Rhone-Poulenc and BASF.
  • the ferromagnetic substance, the base metal, the alkaline agent and the redispersible polymer are in powder form. Their grain size is therefore less than 0.5 mm, preferably between 0.05 and 0.3 mm. Powders with particle sizes outside this range are also possible if one accepts disadvantages, e.g. Dust or a very rough surface. In principle, the components can also be scale-like or fibrous if the resulting disadvantages are acceptable, e.g. poor spreadability.
  • a thickener can also be added to regulate the viscosity, preferably in an amount of 0.2 to 2, in particular 0.4 to 1.0% by weight, based on the iron powder.
  • organic high molecular weight substances such as polyacrylates, polycarboxylic acids, alginates and cellulose ethers such as carboxymethyl cellulose
  • inorganic thickeners such as, for example, polysilicic acid, clay minerals, zeolites and in particular bentonites are suitable as thickeners.
  • Well-known trademarks are: Bentone (Rheox), Thixogel (Südchemie).
  • other additives can be added, such as dyes.
  • the base metal and the organic binder for example, at least 5, in particular 10 to 50 g of base metal and 5 to 12, in particular 6 to 10 g, should be added to 100 g of iron powder come on organic binder.
  • the amount of alkaline agents should be sufficiently high to ensure a pH of more than 9 over a longer period, even in the presence of acids. Since the preferred alkaline agents calcium hydroxide and cement act simultaneously as inorganic binders, a generous dimensioning is appropriate. It can be of the same order of magnitude as that of the organic binders. However, it is also possible not to add any alkaline substance at all if one only looks at rusting and there are no major requirements to be met here.
  • the above components are in the form of a mixture, ie they are intimately mixed with one another.
  • the mixture is preferably dry or powdery. However, it can also be in a highly viscous form, the viscosity should be so high that virtually no segregation occurs.
  • 20 to 40 g of water - based on 100 g of powdery composition - are added and, with stirring, the mixture changes into an aqueous dispersion in a few minutes at room temperature.
  • the amount of water depends on how viscous the dispersion should be or in other words how you want to process it, for example with a roller or with a spatula.
  • the viscosity should be 20,000 to 30,000 mPas at 21 ⁇ C, measured in the rotary viscometer Haake viscosity ester VT 181.
  • the low-viscosity to pasty mass which preferably has a smooth to honey-like consistency, is applied to the surface to be prepared, that is, above all to walls, ceilings and floors or other surfaces, such as plates, to which a covering is magnetically attached shall be.
  • the mass hardens there. Depending on the drying conditions, this usually takes at least a few hours. After 24 hours the coating is so hard that the coverings can be attached to it.
  • the amount of iron to be applied depends on the requirements with which force the coverings should adhere to the surface. In general, 1.5 to 2.0 kg of powdery composition per m 2 of covering are sufficient.
  • the advantages of the composition according to the invention lie in its storage stability and simple handling, depending on the desired mode of operation (machine or manual), and in its good resistance to corrosion and economy.
  • the coatings obtained are flat and rough. Relatively large frictional forces are therefore necessary in order to shift the covering parallel to the plane, compared to a coating made of epoxy resin and the same amount of iron. Even with a small amount of iron per m 2, the adhesion perpendicular to the surface is sufficient so that the covering cannot be lifted up with a vacuum cleaner.
  • substrates made of different materials such as mineral screeds, cement, ceramic, plastic, wood or chipboard.
  • the substrates which are to be coated with a ferromagnetic layer are walls, ceilings and floors, in particular double floor panels made of screed or wood for the production of raised floors. Other substrates are plastic-bonded chipboard.
  • the coverings to be applied to the substrates can be formed from stone, ceramic, wood, metal, PVC, linoleum or from textile surfaces, for example textile fabrics.
  • the coverings can be provided with the magnetically active material either directly during their manufacture or afterwards, which can be based on both a metallic and an oxide basis. Ferrites are particularly useful.
  • This composition was processed with 180 ml of water in 2 min at room temperature by stirring with a mechanical stirrer to a pulpy mass. This could be applied very well to both wood and screed with a spatula. The mass was hard after 24 hours under ambient conditions. It adhered well to both substrates. Formation of rust was not noted among conventional Jardin ⁇ humidity, even after 14 days at 20 ⁇ C and 95% relative humidity: The hardness of the coating was the same, as the adhesion of the magnetic surfaces.
  • the leakage resistance measured according to DIN 53276, was approximately 10 ⁇ to 10 7 ohms.
  • composition (II) consists of: 600 g magnetite,

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

Une composition pulvérulente inoxydable stable au stockage sert à produire des revêtements sur lesquels des garnitures peuvent être assujetties au moyen d'aimants. La composition comprend une substance ferromagnétique, notamment du fer, un métal moins noble que le fer, notamment le zinc, un polymère redispersible en tant que liant organique, notamment l'acétate de polyvinyle, une substance alcaline, notamment l'hydroxyde de calcium, et du ciment. La composition peut en outre contenir un épaississant, tel que la bentonite. En y ajoutant plus ou moins d'eau, on obtient une masse façonnable qui dans des conditions ambiantes normales durcit complètement en 24 heures environ. Des garnitures peuvent alors être assujetties sur le revêtement au moyen d'aimants.
PCT/EP1994/000714 1993-03-15 1994-03-09 Composition contenant de la poudre de fer comme constituant magnetique et un liant WO1994022151A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19934308099 DE4308099A1 (de) 1993-03-15 1993-03-15 Zusammensetzung zur Beschichtung von Wänden, Decken und Böden
DEP4308099.5 1993-03-15
DEP4314522.1 1993-05-03
DE4314522A DE4314522A1 (de) 1993-05-03 1993-05-03 Zusammensetzung mit Eisenpulver als magnetisch wirksamen Bestandteil sowie einem Bindemittel

Publications (1)

Publication Number Publication Date
WO1994022151A1 true WO1994022151A1 (fr) 1994-09-29

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ID=25923944

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1994/000714 WO1994022151A1 (fr) 1993-03-15 1994-03-09 Composition contenant de la poudre de fer comme constituant magnetique et un liant

Country Status (1)

Country Link
WO (1) WO1994022151A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996017022A1 (fr) * 1994-12-02 1996-06-06 Vanadale Pty. Ltd. Composition pour revetement magnetique
AU696098B2 (en) * 1994-12-02 1998-09-03 Vanadale Pty Limited Magnetic coating composition
WO2000001776A1 (fr) * 1998-07-07 2000-01-13 Sttm Enduit magnetique, procede d'enduction mettant en oeuvre un tel enduit et dispositif pour la mise en oeuvre du procede
EP2671853A1 (fr) * 2012-06-06 2013-12-11 3M Innovative Properties Company Surface de plancher magnétique
CN104877405A (zh) * 2015-05-20 2015-09-02 苏州市贝克生物科技有限公司 一种耐热导磁油漆及其制备方法
CN114182914A (zh) * 2021-12-17 2022-03-15 佛山市东鹏陶瓷发展有限公司 一种可拆卸的瓷砖铺贴工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1914109A1 (de) * 1968-03-20 1969-09-25 Sherwin Williams Co Verfahren zum UEberziehen elektrisch leitender Flaechen mit einem duennen Polymerisatfilm
FR2021310A5 (fr) * 1969-09-09 1970-07-17 Elektromat Veb
FR2350445A1 (fr) * 1976-05-06 1977-12-02 Neugart Hartmut Procede pour la pose de decorations de surface facilement interchangeables sur des murs, des plafonds et/ou des sols
FR2420831A1 (fr) * 1978-03-20 1979-10-19 Roulements Soc Nouvelle Procede de fabrication de parois ferromagnetiques
US4412929A (en) * 1982-03-10 1983-11-01 Lysenko Paul D Magnetic wall covering composition
DE9016762U1 (de) * 1990-08-31 1992-01-09 Tenax GmbH Produkte und Systeme für Materialschutz, 2102 Hamburg Ferromagnetische Partikel umfassender Füllstoff in Form eines rieselfähigen Granulats

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1914109A1 (de) * 1968-03-20 1969-09-25 Sherwin Williams Co Verfahren zum UEberziehen elektrisch leitender Flaechen mit einem duennen Polymerisatfilm
FR2021310A5 (fr) * 1969-09-09 1970-07-17 Elektromat Veb
FR2350445A1 (fr) * 1976-05-06 1977-12-02 Neugart Hartmut Procede pour la pose de decorations de surface facilement interchangeables sur des murs, des plafonds et/ou des sols
FR2420831A1 (fr) * 1978-03-20 1979-10-19 Roulements Soc Nouvelle Procede de fabrication de parois ferromagnetiques
US4412929A (en) * 1982-03-10 1983-11-01 Lysenko Paul D Magnetic wall covering composition
DE9016762U1 (de) * 1990-08-31 1992-01-09 Tenax GmbH Produkte und Systeme für Materialschutz, 2102 Hamburg Ferromagnetische Partikel umfassender Füllstoff in Form eines rieselfähigen Granulats

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996017022A1 (fr) * 1994-12-02 1996-06-06 Vanadale Pty. Ltd. Composition pour revetement magnetique
AU696098B2 (en) * 1994-12-02 1998-09-03 Vanadale Pty Limited Magnetic coating composition
WO2000001776A1 (fr) * 1998-07-07 2000-01-13 Sttm Enduit magnetique, procede d'enduction mettant en oeuvre un tel enduit et dispositif pour la mise en oeuvre du procede
FR2781493A1 (fr) * 1998-07-07 2000-01-28 Claude Texier Enduit magnetique, procede d'enduction mettant en oeuvre un tel enduit et dispositif pour la mise en oeuvre du procede
US6881450B1 (en) 1998-07-07 2005-04-19 Claude Texier Apparatus and method for making a magnetic coated medium, and a coated medium therefrom
WO2013182490A1 (fr) * 2012-06-06 2013-12-12 3M Innovative Properties Company Surface de plancher magnétique
EP2671853A1 (fr) * 2012-06-06 2013-12-11 3M Innovative Properties Company Surface de plancher magnétique
US20150140341A1 (en) * 2012-06-06 2015-05-21 3M Innovative Properties Company Magnetic floor surface
RU2596810C2 (ru) * 2012-06-06 2016-09-10 3М Инновейтив Пропертиз Компани Поверхность магнитного пола
US20180047486A1 (en) * 2012-06-06 2018-02-15 3M Innovative Properties Company Magnetic floor surface
US10699828B2 (en) 2012-06-06 2020-06-30 !Obac Limited Magnetic floor surface
US10720270B2 (en) 2012-06-06 2020-07-21 !Obac Limited Magnetic floor surface
CN104877405A (zh) * 2015-05-20 2015-09-02 苏州市贝克生物科技有限公司 一种耐热导磁油漆及其制备方法
CN114182914A (zh) * 2021-12-17 2022-03-15 佛山市东鹏陶瓷发展有限公司 一种可拆卸的瓷砖铺贴工艺

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