EP1272571A1 - Substance transparente a propri t s de transmission et de r flexion et/ou d'absorption angulairement s lectives - Google Patents

Substance transparente a propri t s de transmission et de r flexion et/ou d'absorption angulairement s lectives

Info

Publication number
EP1272571A1
EP1272571A1 EP01927759A EP01927759A EP1272571A1 EP 1272571 A1 EP1272571 A1 EP 1272571A1 EP 01927759 A EP01927759 A EP 01927759A EP 01927759 A EP01927759 A EP 01927759A EP 1272571 A1 EP1272571 A1 EP 1272571A1
Authority
EP
European Patent Office
Prior art keywords
substrate
angle
transparent medium
transparent
pigments
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.)
Withdrawn
Application number
EP01927759A
Other languages
German (de)
English (en)
Inventor
Elke Steudel
Hans-Dieter BRÜCKNER
Gerhard Pfaff
Peter Reynders
Christoph Schmidt
Carsten BRABÄNDER
Wolfgang Hechler
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.)
Merck Patent GmbH
Original Assignee
Merck Patent 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
Priority claimed from DE10018904A external-priority patent/DE10018904A1/de
Application filed by Merck Patent GmbH filed Critical Merck Patent GmbH
Publication of EP1272571A1 publication Critical patent/EP1272571A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • 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
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
    • C09C1/0024—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating high and low refractive indices, wherein the first coating layer on the core surface has the high refractive index
    • C09C1/003—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating high and low refractive indices, wherein the first coating layer on the core surface has the high refractive index comprising at least one light-absorbing layer
    • C09C1/0039—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating high and low refractive indices, wherein the first coating layer on the core surface has the high refractive index comprising at least one light-absorbing layer consisting of at least one coloured inorganic material
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • C03C1/04—Opacifiers, e.g. fluorides or phosphates; Pigments
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/3411—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials
    • C03C17/3417—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials all coatings being oxide coatings
    • 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
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • 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
    • C08K7/00—Use of ingredients characterised by shape
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/0009—Pigments for ceramics
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
    • C09C1/0024—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating high and low refractive indices, wherein the first coating layer on the core surface has the high refractive index
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
    • C09C1/0024—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating high and low refractive indices, wherein the first coating layer on the core surface has the high refractive index
    • C09C1/003—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating high and low refractive indices, wherein the first coating layer on the core surface has the high refractive index comprising at least one light-absorbing layer
    • C09C1/0033—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating high and low refractive indices, wherein the first coating layer on the core surface has the high refractive index comprising at least one light-absorbing layer consisting of a metal or an alloy
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/0081—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/32—Radiation-absorbing paints
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
    • C01P2002/84—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by UV- or VIS- data
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/40—Electric properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
    • C09C2200/24—Interference pigments comprising a metallic reflector or absorber layer, which is not adjacent to the core
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C2210/00—Special effects or uses of interference pigments
    • C09C2210/10—Optical properties in the IR-range, e.g. camouflage pigments
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated

Definitions

  • the invention relates to the use of multilayer pigments in transparent media, which are characterized in that they are angle-selective
  • the sun is an inexhaustible, environmentally friendly source of energy that provides us with the potential for energy to heat buildings. A total of four times more energy is radiated onto a building than the heating energy consumed inside.
  • TWD Transparent thermal insulation
  • a TWD element In the case of a transparent heat-insulated outer wall, a TWD element is located in front of a solid wall on which a black or colored absorber layer is applied. This system directs the incident solar energy from the outside of a facade through a glass tube system, transfers it to the wall former and converts it into heat.
  • the TWD systems currently in use provide good thermal insulation and also generate energy in winter, but due to their mode of operation in summer they cause the wall to overheat and lead to uncomfortable interior wall temperatures, provided that no mechanical shading systems, such as. B., blinds, blinds, slats, exhaust fans, etc., are available.
  • the black absorber layers required to absorb the energy also represent a decorative limitation when designing facades.
  • the pigmented transparent medium known from DE 197 56 037 A1 has solved this problem by not only using the solar radiation in winter, but also protecting buildings from summer overheating.
  • angle-selective transmitting pigments such as Pearlescent pigments used.
  • the solar radiation in the wavelength range of 0.25-2.5 ⁇ m is less transmitted through a pigmented area in summer when the sun is high than when the sun is flat in the winter months.
  • the transmission properties of the pearlescent pigments are determined by the refractive index and absorption properties of the coating materials, the layer thicknesses and the layer sequence.
  • the object of the present invention is to significantly increase the efficiency of the angle-selective shading of the TWD.
  • Multi-layer pigments are not only of interest due to their coloring, but are also increasingly being used in functional areas.
  • Multi-layer pigments show selective reflection or transmission in the visible wavelength range, properties that are responsible for the color impression. This wavelength-dependent reflection or
  • the angular dependence of the optical properties can be increased by a suitable choice and combination of coating materials with different refractive indices.
  • the wavelengths of the maximum transmission of the pigments and the maximum solar energy coincide with vertical sunlight, with flat incidence, i.e. for angles greater than 60 ° from the perpendicular, the maxima are clearly shifted from each other.
  • the ratio of the degrees of transmission at 0 ° and 60 ° angle of incidence can thereby be reduced from 0.6 for conventional pearlescent pigments to 0.1 for ideal multilayer pigments.
  • multilayer pigments multilayer pigments
  • a considerably greater shading effect can be achieved than with conventional pearlescent pigments.
  • the angle-dependent transmission behavior of the pigments can be strengthened and adapted to the requirements of the respective facade.
  • the ratio of solar transmission winter / summer can be reduced from 0.5 - 0.85 for conventional pearlescent pigments to 0.1 - 0.6 for multi-layer pigments.
  • the invention thus relates to transparent media containing multi-layer pigments based on platelet-shaped substrates with angle-selective reflection or transmission properties and / or absorption properties, characterized in that the ratio of the solar transmittance in summer (angle of incidence of solar radiation 55 to 70 °) and the solar transmittance in winter (angle of incidence of solar radiation 5 to 20 °) is in the range of 0.1 - 0.6.
  • the angle-selective properties of the multilayer pigments in the transparent media concentrate on the spectral range of the
  • Solar radiation d. i.e., 0.25 to 2.5 ⁇ m.
  • the directional hemispherical transmission and reflectance z. B. on glass substrates on which the functional pigments are applied measured. From these measured directional-hemispherical transmission and reflection levels, solar or visual transmission and reflection levels can be calculated according to DIN 67507 by weighting with the solar spectrum or the sensitivity to light of the human eye.
  • Multilayer pigments in question which have angle-selective reflection or transmission properties and absorption properties and their ratio of the solar transmittance in summer (angle of incidence of solar radiation 55 to 70 °) and the solar transmittance in winter (angle of incidence of solar radiation 5 to 20 °) in Range is from 0.1 to 0.6, preferably less than 0.5, in particular from 0.3 to 0.5.
  • Multilayer pigments recommend applying the platelet-shaped pigments to a structured surface or in a structure-forming medium, which in turn dictate the orientation of the platelets. With an appropriate alignment of the pigment platelets, the angle-selective effect is effectively enhanced.
  • the structuring can be achieved, for example, by the pigmented transparent Medium is applied to an embossing film or the transparent medium itself is embossed, or by adding structure-forming additives to the transparent medium.
  • the angle-selective properties of the functional pigments are only expressed in a transparent medium such as a glass frit or a screen printing medium if the pigment is present in amounts of 5 to 70% by weight, preferably 10 to 50% by weight, in particular 30 to 40% by weight. is used.
  • concentration used depends on the transparent medium used. In the case of water-based lacquer and lacquer systems, the use concentration, based on the lacquer, is preferably 1 to 20% by weight, in particular 3 to 15% by weight.
  • the multilayer pigments are incorporated into a transparent medium and then applied to a transparent support, or into a transparent medium, such as Plastic, incorporated.
  • a transparent medium such as Plastic
  • the surface or the pigmented layer can be embossed.
  • the shading modules obtained in this way are attached to facades that can support TWD modules.
  • Multilayer pigments known from DE 197 07 806, DE 197 46 067 are based on a platelet-shaped, transparent, colored or colorless matrix consisting, for example, of mica (synthetic or natural), SiO 2 , glass, Ti0 2 , graphite, Al 2 0 3 plates and usually have a thickness between 0.3 and 5 microns, in particular between 0.4 and 2.0 microns.
  • the extension in the other two dimensions is usually between 1 and 250 ⁇ m, preferably between 2 and 100 ⁇ m, and in particular between 5 and 40 ⁇ m.
  • the multilayer pigments consist of the matrix (substrate) coated with colored or colorless metal oxides (at least 2), rare earth metal sulfides, such as Ce 2 S 3 , oxysulfides, metal sulfides.
  • the coating of the substrate platelets with several layers takes place in such a way that a layer structure consisting of alternating high and low refractive index layers is produced.
  • Suitable high-index metal oxides are, for example, titanium dioxide, zirconium oxide, zinc oxide, cerium oxide, iron oxides (Fe 2 0 3 , Fe 3 0 4 ), iron titanium oxides (iron titanates) and / or chromium oxide, BiOCI, FeO (OH), spinels, titanates, Aluminates, chromates, tungsten bronzes,
  • Tin oxides also doped
  • nitrides for example TiN, in particular Ti0 2 and / or Fe 2 0 3 .
  • the doped tin oxides are preferably tin oxides which are provided with antimony, fluorine and / or phosphorus in quantities of 0.5 to 15% by weight, based on doped Sn. (Sn, Sb) 0 2 is particularly preferred.
  • Si0 2 and Al 2 O 3 are used as low-refractive metal oxides.
  • MgF 2 organic polymers (eg acrylates), B 2 O 3 , zeolites or borosilicates are also suitable.
  • the substrate platelets can be coated, for example, as described in WO 93/08237 (wet chemical coating) or DE-OS-196 14 637 (CVD method).
  • a transparent substrate can assume an optical function of the multilayer system, in particular if the substrate is SiO 2 or Al 2 0 3 .
  • Preferred multilayer pigments have the following layer structure:
  • a semi-transparent layer of a metal can also be used.
  • Suitable metals for this are, for example, Cr, Ti, Mo, W, Al, Cu, Ag, Au or Ni.
  • fine particles in the nanometer size range can also be introduced into the high or low refractive index layers.
  • finely divided Ti0 2 or finely divided carbon (soot) with particle sizes in the range of 10-250 nm have proven to be suitable.
  • the light-scattering properties of such particles can be used to influence gloss and hiding power in a targeted manner.
  • the multilayer pigments can also be used to improve the light
  • Weather and chemical stability or to increase the compatibility in different media can also be provided with a protective layer.
  • Possible post-coatings or post-treatments are, for example, the processes described in DE 22 15 191, DE 31 51 354, DE 32 35 017 or DE 33 34 598.
  • the additional substances applied make up only about 0.1 to 5% by weight, preferably 0.5 to 3.0% by weight, of the multilayer pigment.
  • the transparent medium according to the invention can also contain a mixture of different multi-layer pigments, since the
  • the pigments can then be mixed in any ratio, but the total content of all functional pigments in the transparent medium should not exceed 70% by weight.
  • the multilayer pigments are also advantageously mixed with organic dyes, inorganic pigments or other pigments, such as. B. transparent and opaque white, colored and black pigments as well as with platelet-shaped iron oxides, organic pigments and conventional transparent, colored and black gloss pigments based on metal oxide coated Mica, Si0 2 , AI 2 O 3 , glass plates, etc. can be used.
  • the multilayer pigments can be mixed in any ratio with the commercially available pigments and fillers.
  • Suitable transparent media are in particular glass, paints, water-based paints, plastics, in particular plastic films.
  • the transparent medium is preferably glass or a transparent polymer.
  • Common paint binders such as e.g. Polyurethane-acrylate resins, acrylate-melamine resins, alkyd resins, polyester resins and epoxy resins, hydrocarbon resins, nitrocellulose, nitrocellulose derivatives, cellulose acetopropinate, butyrate, ketone resins, aldehyde resins, polyvinyl butyral, ⁇ -methylstyrene-acrylonitrile-copolymers Basis of acrylic acid butyl ester, polyacrylic acid ester, in particular polyacrylic acid butyl ester, an aqueous dispersion based on polyethylene, an aqueous dispersion based on polyethylene oxidate, an aqueous dispersion based on ethylene-acrylic acid copolymers, an aqueous dispersion based on methacrylate, based on acrylate / styrene, a Vinylpyrrolidone-vinyl acetate copolymer, or a mixture of the dispers
  • the formulation is generally prepared by introducing one or more multilayer pigments and mixing them homogeneously with the binder and any non-covering additives.
  • the pigmented paint can then z. B. on glass plates, aluminum or
  • Steel sheets e.g. by dipping, brushing, knife coating, printing, spraying, etc.
  • the pigmented paint is then baked at temperatures of 100-800 ° C depending on the paint system.
  • the stoving process preferably takes place at temperatures of 100 - 250 ° C.
  • the functional pigment or pigment mixture in dry form on a carrier for. B. a thermoplastic, be applied.
  • the carrier is then melted and the pigment is distributed homogeneously in the transparent medium.
  • thermoplastic plastics known to the person skilled in the art, such as z. B. in Ulimann, Vol. 15, pp. 457 ff.,
  • Suitable plastics are e.g.
  • Polyethylene Polypropylene, polyamides, polyesters, polyester esters, poly ether esters, polyphenylene ethers, polyacetal, polybutylene terephthalate, poly methyl methacrylate, polyvinyl acetal, polystyrene, polyurethanes, acrylonitrile butadiene styrene (ABS), acrylonitrile styrene acrylic ester (ASA), polycarbonate,
  • ABS acrylonitrile butadiene styrene
  • ASA acrylonitrile styrene acrylic ester
  • the multilayer pigments are incorporated into the plastic by mixing the plastic granules with the pigment and then deforming them under the action of heat.
  • the plastic granulate / pigment mixture is generally prepared by placing the plastic granulate in a suitable mixer, wetting it with any additives, and then adding and mixing in the pigment.
  • the pigmentation of the plastic is usually done using a color concentrate (masterbatch) or compound.
  • the mixture thus obtained can then be processed directly in an extruder or an injection molding machine.
  • the moldings formed during processing, such as. B. plastic plates, show a very homogeneous distribution of the pigment.
  • the pigments can also be introduced into glass or ceramics.
  • the multilayer pigments are gently mixed with the glass or ceramic frits, the powder mixture is applied to a carrier and 5 to 60 min., Preferably 5 to 30 min., In particular for 5-20 min., At temperatures of 150-1100 ° C, preferably at 400-850 ° C, fired.
  • the medium according to the invention can be applied to any substrate materials, for example metals such as iron, steel, aluminum, copper, bronze, brass and metal foils, but also metal-coated surfaces of glass, ceramics, concrete, packaging materials, foils or other materials to be shadowed and at the same time applied decorative purposes.
  • metals such as iron, steel, aluminum, copper, bronze, brass and metal foils
  • TWD transparent thermal insulation
  • the invention also relates to TWD systems which contain colored absorber layers in combination with angle-selective shading glass coatings.
  • the transparent media according to the invention are of considerable economic importance in terms of energy saving and thus resource conservation, in particular due to their use in transparent thermal insulation (TWD).
  • Timiron ® Splendid Red multilayer pigment based on mica platelets coated with Ti0 2 , Si0 2 and Ti0 2 from Merck KGaA, Germany
  • Cerdec Fritte-10049 glass powder from Cerdec
  • Timiron ® Splendid Blue multi-layer pigment based on mica flakes with Ti0 2 , Si0 2 and Ti0 2 , from Merck KGaA) in Cerdec Fritte-10049 after baking
  • Timiron ® Splendid Red / Timiron ® Splendid Blue (multi-layer pigments from Merck KGaA, ratio 3: 1) in Cerdec Fritte-10049 after baking
  • Iriodin ® 219 (single-layer pigment based on mica flakes coated with Ti0 2 (rutile) from Merck KGaA) in Cerdec Fritte-10049 after baking

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Wood Science & Technology (AREA)
  • Metallurgy (AREA)
  • Composite Materials (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Laminated Bodies (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

L'invention concerne une substance transparente contenant des pigments multicouche aux propriétés de réflexion et de transmission et/ou d'absorption angulairement sélectives, ainsi que leur utilisation, notamment dans des systèmes d'isolation thermique transparents (TWD).
EP01927759A 2000-04-11 2001-03-20 Substance transparente a propri t s de transmission et de r flexion et/ou d'absorption angulairement s lectives Withdrawn EP1272571A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10017960 2000-04-11
DE10017960 2000-04-11
DE10018904 2000-04-14
DE10018904A DE10018904A1 (de) 2000-04-14 2000-04-14 Transparentes Medium mit winkelselektiven Transmissions- bzw. Reflexionseigenschaften und/oder Absorptionseigenschaften (II)
PCT/EP2001/003159 WO2001077235A1 (fr) 2000-04-11 2001-03-20 Substance transparente a propriétés de transmission et de réflexion et/ou d'absorption angulairement sélectives

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Publication Number Publication Date
EP1272571A1 true EP1272571A1 (fr) 2003-01-08

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EP01927759A Withdrawn EP1272571A1 (fr) 2000-04-11 2001-03-20 Substance transparente a propri t s de transmission et de r flexion et/ou d'absorption angulairement s lectives

Country Status (9)

Country Link
US (1) US6767633B2 (fr)
EP (1) EP1272571A1 (fr)
JP (1) JP2003530457A (fr)
KR (1) KR20020093904A (fr)
CN (1) CN1422309A (fr)
AU (1) AU2001254707A1 (fr)
MX (1) MXPA02010023A (fr)
TW (1) TW538108B (fr)
WO (1) WO2001077235A1 (fr)

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Also Published As

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JP2003530457A (ja) 2003-10-14
AU2001254707A1 (en) 2001-10-23
CN1422309A (zh) 2003-06-04
KR20020093904A (ko) 2002-12-16
MXPA02010023A (es) 2003-02-12
US20030092815A1 (en) 2003-05-15
TW538108B (en) 2003-06-21
WO2001077235A1 (fr) 2001-10-18
US6767633B2 (en) 2004-07-27

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