WO2000032716A1 - Composition fluorescente ou phosphorescente - Google Patents
Composition fluorescente ou phosphorescente Download PDFInfo
- Publication number
- WO2000032716A1 WO2000032716A1 PCT/JP1999/006587 JP9906587W WO0032716A1 WO 2000032716 A1 WO2000032716 A1 WO 2000032716A1 JP 9906587 W JP9906587 W JP 9906587W WO 0032716 A1 WO0032716 A1 WO 0032716A1
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- WO
- WIPO (PCT)
- Prior art keywords
- fluorescent
- powder
- luminous
- film
- layer
- Prior art date
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- 0 CCC(C)(C1)C1(C)C(C1C2)C(C3)C12C3(C)C1*(C)=CCN2C1(C)C2 Chemical compound CCC(C)(C1)C1(C)C(C1C2)C(C3)C12C3(C)C1*(C)=CCN2C1(C)C2 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
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- 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
- C09D11/00—Inks
- C09D11/50—Sympathetic, colour changing or similar inks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
- B41M3/144—Security printing using fluorescent, luminescent or iridescent effects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
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- 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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31815—Of bituminous or tarry residue
- Y10T428/31819—Next to cellulosic
Definitions
- the present invention relates to a fluorescent or luminous composition. More specifically, it has both color and fluorescent or luminous properties, and is useful for preventing forgery when used as inks, fillers, paints and toners for printing and coating. Or, it relates to a phosphorescent composition. Background art
- the color of the magnetic metal powder which is a problem with the conventional black magnetic toner, cannot be used as it is.
- a thin metal oxide film on the surface of the powder to protect the powder and to modify the surface in order to protect the powder and to make the powder easier to mix with synthetic resin, etc. By means of forming- It cannot withstand the new demands of this field. In this regard, it is necessary to provide a new composition of powder that is not available in conventional powders.
- a metal powder or metal oxide powder is dispersed in a metal alkoxide solution, and the metal alkoxide is hydrolyzed to form a metal oxide film, which is uniformly formed on the surface of the metal or metal compound substrate.
- a powder having a thickness of 0.01 to 20 / zm and having a metal oxide film containing a metal different from the metal constituting the base is disclosed (JP-A-6-228). No. 604).
- a special function can be given by adjusting the thickness of each layer of the film. If a coating film with a different refractive index is provided with a thickness corresponding to a quarter wavelength of light, all light is reflected.
- a magnetic substance such as a metal powder such as iron, cobalt, nickel or the like, a metal alloy powder, or an iron nitride powder, a magnetic toner for magnetic toner which shines white by totally reflecting light is obtained. Powder can be obtained. Further, it discloses that a color magnetic toner can be obtained by providing a colored layer on the powder and providing a resin layer thereon (Japanese Patent Application Laid-Open No. 7-93010).
- the present inventors have formed a metal oxide or metal coating on the surface of a metal powder or a metal compound powder to impart another property in addition to the properties of the metal or metal compound powder serving as a base. To develop highly functional metal or metal compound powders.
- the above color ink composition requires an inspection device in order to determine the authenticity by combining with a reader using reflected light by ultraviolet rays or infrared rays.
- a function that can easily determine the authenticity and that can further enhance the anti-counterfeiting performance of printed matter by a new method is indispensable, and there is room for improvement. Disclosure of the invention
- an object of the present invention is to solve these problems and to provide a beautiful and stable color printing of a single color such as blue, green, and yellow, a coating ink, a paper or plastic filler, a coating and It is useful as an ink for high-performance color magnetic printing, and uses a simple method such as illuminating a light source such as a fluorescent lamp, ultraviolet lamp, or infrared lamp indoors without using any new inspection equipment.
- Another object of the present invention is to provide a fluorescent or luminous composition having a function of determining the authenticity of a printed matter and having a function of further improving the performance of preventing forgery of a printed material or the like.
- the present invention relates to the following (1) to (10).
- FIG. 1 is a graph showing a spectral reflectance curve of the fluorescent pigment composition obtained in Example 1.
- FIG. 2 is a graph showing a fluorescence spectral reflectance curve of the fluorescent pigment composition obtained in Example 1.
- FIG. 3 is a graph showing a spectral reflectance curve of the phosphorescent pigment composition obtained in Example 3.
- FIG. 4 is a graph showing a luminous spectral reflectance curve of the luminous pigment composition obtained in Example 3.
- FIG. 5 shows the spectral reflectance curve of the fluorescent pigment composition obtained in Example 7 as ⁇
- FIG. 6 shows a fluorescence spectral reflectance curve of the fluorescent pigment composition obtained in Example 7.
- FIG. 7 shows a spectral reflectance curve of the phosphorescent pigment composition obtained in Example 11.
- FIG. 8 is a graph showing a luminous spectral reflectance curve of the luminous pigment composition obtained in Example 11.
- the present inventors have conducted intensive research and have found that a multilayer thin film having a different refractive index is formed on the powder surface to adjust the reflected light interference waveform of the multilayer film, and that the same or different color or fluorescent or phosphorescent light is used. Or a layer of a fluorescent or luminous substance that does not contribute to light interference by mixing at least one of the multilayer films with a pigment that emits fluorescent or luminous light, By forming a (film), even when used alone, it becomes a pigment of beautiful and stable color such as blue, green, and yellow, and at the same time, forgery prevention is achieved by simple identification of printed matter based on the presence or absence of fluorescence or phosphorescence. They have found that it is possible and have completed the present invention.
- a substrate having various properties such as a ferroelectric substance and a conductor, can be used as the base of the powder. Even when a magnetic substance is used as the base, the powder coated with the multilayer film impairs magnetism. It has been found that bright coloring and fluorescent or luminous chromogenic properties can be obtained without any problem.
- the fluorescent or luminous composition of the present invention is useful as a color printing or coating ink, paper or plastic film or paint having fluorescent or luminous properties.
- a magnetic material when used as the substrate, it can also be used as a coloring material for high-performance color magnetic printing inks, and can be used for visible light, invisible light (ultraviolet and infrared), fluorescent or phosphorescent coloring and magnetic It has a function to identify eight combinations of electric, electric (change in electric field), electron beam and X-ray, and can enhance the anti-counterfeiting effect of printed matter.
- the substrate of the multilayer-coated powder used in the present invention is not particularly limited, and powders having various properties such as magnetism, ferroelectricity, and conductivity can be used.
- a wide variety of substances, such as metals, metal compounds, organic substances, and inorganic substances, can be used.
- metals include transition metals such as iron, nickel, chromium, titanium, cobalt, copper, and aluminum; metals such as rare earth metals such as neodymium and yttrium; and alloys thereof.
- alloys of the above-mentioned metals such as iron-nickel and iron-cobalt alloys, as well as iron-nickel alloy nitrides and iron-nickel-cobalt alloy nitrides, and metal oxides such as iron, nickel, chromium, and titanium
- metal oxides such as iron, nickel, chromium, and titanium
- alkaline earth metal oxides such as calcium, magnesium, and barium, or composite oxides of these, and clays And glasses.
- one of the objects is to produce a powder that also shares magnetism, such as a color magnetic toner or a color magnetic ink, and in that case, the multi-layer coating powder in the fluorescent or phosphorescent composition of the present invention.
- a ferromagnetic material may be a transition metal such as iron, nickel, chromium, titanium, cobalt, copper, or aluminum; a rare earth metal such as neodymium or itdium; or a metal having a high magnetic susceptibility such as an alloy of these metals.
- Ferromagnetic oxides and ferromagnetic alloys such as magnetite, Ba ferrite, Sr ferrite, hematite, Kovardo ferrite, or a mixture of these ferrites are also used.
- resin particles are preferable. Specific examples thereof include cellulose powder, cellulose phosphate powder, polyamide, epoxy resin, polyester, melamine resin, polyurethane, butyl acetate resin, silicone resin, and acrylic acid. Spherical or crushed particles obtained by polymerization or copolymerization of esters, methacrylates, styrene, ethylene, propylene and their derivatives. Particularly preferred resin particles are spherical acryl resin particles obtained by polymerization of acrylic acid or methacrylic acid ester.
- inorganic substances include inorganic hollow particles such as shirasu balloons (hollow silicate particles), micro carbon hollow spheres (Clekasphere), fused alumina bubbles, aerosil, white carbon, silica micro hollow spheres, and calcium carbonate micro hollow.
- Spheres, calcium carbonate, perlite, talc, bentonite, kaolin, mica, synthetic force, glass beads, and the like can be used.
- the shape of the powder core particles examples include spheres, subspheres, isotropic bodies such as regular polyhedrons, cuboids, spheroids, rhombohedrons, plate-like bodies, needle-like bodies (cylinders, prisms), etc. Also, completely amorphous powders such as pulverized materials can be used.
- the particle size of these substrates is not particularly limited, but is preferably in the range of 0.1 / zm to several mm.
- a plurality of coating layers having different refractive indices are used, and the base particles are coated by appropriately selecting the refractive index and the layer thickness of each coating layer, thereby being colored by the interference color.
- each coating layer is arbitrarily selected from inorganic metal compounds, metals or alloys, and organic substances.
- Typical examples of the inorganic metal compound constituting the coating layer include metal oxides. Specific examples thereof include, for example, oxides of iron, nickel, chromium, titanium, aluminum, silicon, calcium, magnesium, and barium. Or composite oxides thereof. Further, examples of metal compounds other than metal oxides include metal nitrides such as magnesium fluoride and iron nitride, and metal carbides.
- the simple metals that constitute the coating layer include metallic silver, metallic cobalt, metallic nickel, metallic palladium, metallic iridium, platinum, gold, metallic iron, and the like, and metallic alloys such as silver-iridium, palladium-platinum, silver radium, Alloys such as platinum-palladium.
- the organic substance constituting the coating layer may be the same or different from the above-mentioned organic substance constituting the base, and is not particularly limited, but is preferably a resin.
- the resin include cellulose, cellulose sulphate, polyamide, epoxy resin, polyester, melamine resin, polyurethane, resin vinyl resin, silicone resin, acrylate, methacrylate, styrene, ethylene, propylene and Polymers or copolymers of these derivatives are exemplified.
- various materials can be used as the material constituting the coating layer, and the combination of these materials is appropriately selected according to the application in consideration of the refractive index of each coating layer. Is necessary.
- the particle size of the multilayer film-coated powder according to the present invention is not particularly limited and can be appropriately adjusted depending on the purpose, but is usually in the range of 0.01 ⁇ m to several mm. ---- One In the present invention, the thickness of the coating film formed at one time can be in the range of 5 ⁇ to 10 ⁇ m, and can be thicker than the conventional formation method.
- the total thickness of the coating film formed in a plurality of times in the case of the color powder described above, in order to form a coating film having a good reflectance due to the interference, it is required to be 1011 ⁇ 1 ⁇ 20 / Is preferably in the range of 20 nm to 5 ⁇ m.
- the thickness is preferably in the range of 0.02 to 2. ⁇ ⁇ .
- each unit coating layer constituting the plurality of coating layers is set so as to have an interference reflection peak or interference transmission bottom of a specific same wavelength. More preferably, the thickness of each unit coating layer is set by the following formula (1):
- N is the complex refractive index
- d is the basic film thickness
- m is an integer (natural number)
- ⁇ is the wavelength of the interference reflection peak or the interference transmission bottom
- ⁇ is the following formula (2):
- N n + i ⁇ (2)
- ⁇ is the refractive index of each unit coating layer, i is a complex number, and ⁇ is the attenuation coefficient.
- Each unit coating layer has a specific thickness based on the function consisting of the phase shift due to the refractive index attenuation coefficient ⁇ , the phase shift at the film interface, the dispersion of the refractive index, and the peak shift depending on the particle shape.
- the actual film thickness of each unit coating layer is corrected so as to have an interference reflection peak or an interference transmission bottom of the same wavelength.
- the following methods can be mentioned according to the substance to be formed, but other methods can also be used.
- a method of forming a resin film on the particles by dispersing the particles serving as a substrate and subjecting the particles to emulsion polymerization can be used.
- a metal oxide film on the particles by dispersing particles serving as a substrate in a metal alkoxide solution and hydrolyzing the metal alkoxide, and it is preferable to form a dense metal oxide film on the particles. it can.
- a metal oxide film or the like can be formed on the particles by the reaction of the aqueous metal salt solution.
- a so-called chemical plating method is used in which a metal film is formed by reducing a metal salt in a metal salt aqueous solution to precipitate a metal.
- a metal film can be formed on the surface of the particles by vacuum evaporation of metal or the like.
- a coating layer having a fluorescent or luminous substance is a layer that imparts fluorescence or luminous coloring to the multilayer-coated powder. It is.
- the substance contained in the fluorescent or luminous color developing layer includes the fluorescent or luminous color developing property of the multilayer-coated powder, that is, a property of emitting fluorescent or luminous light that can be easily distinguished by irradiating ultraviolet light or visible light.
- the substance is not particularly limited as long as it is a substance, but a fluorescent or luminous substance capable of maintaining fluorescence or luminous coloration for a long period is preferable.
- a fluorescent substance is a substance whose function is temporarily excited by electromagnetic waves (light) at a specific wavelength and emits light of a specific wavelength (especially visible light), and does not emit light without a light source. .
- the fluorescent substance applied to the fluorescent coloring layer is a fluorescent dye or a fluorescent pigment, which is a general term for a dye that absorbs external energy and emits fluorescence, and, in addition to the color of the dye itself, has almost the same wavelength. Due to the addition of fluorescent light, it exhibits a brilliant color. For example, C. I. A cid Yellow 7, a yellow acid dye that emits green fluorescence, and a red base that emits yellow to orange fluorescent light CI dyes such as C.I.Basic Red.
- the following are specific examples of the fluorescent substance applied to the fluorescent coloring layer, but the present invention is not limited to these specific examples.
- organic fluorescent pigments include peranine, eosin, diaminotilben, thioflavin-cho, rhodamine B, international orange, etc.
- Inorganic fluorescent pigments include calcium tungstate, lead-containing barium silicate, europium Strontium-containing phosphate, europium-containing yttria, cerium-containing yttria, copper or silver, tin, manganese, arsenic, aluminum, cadmium, zinc oxide containing one or more of manganese, magnesium-containing magnesium gallate, magnesium fluoride, fluoride Calcium, oxygen-deficient zinc oxide, europium-containing zinc oxide, cerium-containing zinc oxide, cesium-containing zinc oxide, manganese or arsenic-containing zinc silicate, bismuth-containing zinc cadmium sulfide, bismuth-containing zinc sulfide Lucium strontium and the like.
- Luminescent substances can store light energy and emit light even after irradiating light such as sunlight or fluorescent lamps without a light source.
- metal sulfides have been known as phosphorescent substances (phosphorescent phosphors).
- C a S: B i purple blue emission
- ZnS Cu (green emission)
- ZnCdS Cu (yellow to orange emission)
- luminous substance applied to the luminous coloring layer include the following, but the present invention is not limited to these specific examples.
- Luminescent (phosphorescent) pigments have a luminous property by adding an activator such as copper, manganese or mercury to a pigment such as zinc sulfide.
- an activator such as copper, manganese or mercury
- Z n C d S Cu
- C a S r S trace metal contents sulfide powder B i, etc.
- the configuration of the fluorescent or luminous substance and the multilayer-coated powder is as follows: (1) a form attached to the surface of the multilayer-coated powder; A form in which the substance and the multilayer-coated powder are dry-mixed and a fluorescent or luminous substance is attached to the surface of the multilayer-coated powder; (3) the multilayer-coated powder and the fluorescent or luminous substance are contained in the fluorescent or luminous composition
- the fluorescent or luminous color-forming layer may be used in a dispersed form or the like.
- the surface of particles serving as the substrate of the fluorescent or luminous multi-layer coating powder (5) The surface of the substrate It can be formed either in the formed optical coherent multilayer coating film or on (6) the surface of the multilayer coating powder.
- Examples of the mutual form of the fluorescent or luminous substance of the above (1), (2) and (3) and the powder coated with a multilayer film include the following methods.
- Fluorescent or phosphorescent particles having a smaller particle size than the particles of the multilayer-coated powder are dry-mixed and prepared.
- the fluorescent or luminous substance having the multilayer-coated powder adhered to the surface remains adhered.
- the fluorescent or luminous substance may be separated and dispersed in the fluorescent or luminous composition.
- the two are integrated. desirable. The reason for this is that by separating and using other functions of the multilayer-coated powder particles from the fluorescent, luminous, or luminescent properties, it is possible to prevent more complicated forgery.
- the powder is as white, transparent or white as possible, or nearly transparent, or has the same color as the multilayer-coated powder. desirable. However, this does not apply to the case where the powder coated with the multilayer film and the fluorescent or luminous substance are colored in different colors.
- the method for dispersing a composition in which the multilayer-coated powder and the fluorescent or luminous substance are dispersed in the fluorescent or luminous composition is described in the above (1) or (2).
- a fluorescent or luminous substance is used, and as a dispersion medium, a conventionally known varnish used for color printing or color magnetic printing can be used.
- a liquid polymer described below, a polymer dissolved in an organic solvent, Monomers and the like can be appropriately selected and used according to the application method and application of the type of powder.
- the powder coated with the multilayer film and the fluorescent or luminous substance are separated and dispersed in the dispersion medium.
- a layer containing a fluorescent or luminous substance as a main component is provided, and the fluorescent or luminous coloring layer participates in visible light interference.
- a layer containing a fluorescent or luminous substance as a main component is provided, and the fluorescent or luminous coloring layer does not contribute to visible light interference (preferably, the effect of visible light interference is not reduced).
- a layer containing a fluorescent or luminous substance as the main component and when this fluorescent or luminous coloring layer is involved in visible light interference, use it for a high refractive index layer or a low refractive index layer for interference due to the magnitude of the refractive index.
- the refractive index and the film thickness are designed so as to meet the interference condition, and the film is colored by causing visible light interference reflection, and simultaneously emits fluorescence or light.
- the film formation there is a method utilizing deposition on a surface such as a sol-gel method or solid phase deposition from an aqueous solution. It is desirable to heat-treat these obtained powders if necessary. If the substance is thermally decomposed, it is desirable to form a fluorescent or luminous layer on the outermost layer.
- a fluorescent or luminous substance film is formed.
- the fluorescent or luminous substance film may be a film made of fine particles.
- the film formation there is a method utilizing deposition on a surface such as a sol-gel method or solid phase deposition from an aqueous solution.
- fluorescent or luminous substance fine particles fluorescent or luminous particles having a smaller particle diameter than the particles to be coated
- the film substance is thermally decomposed, it is desirable to form a fluorescent or luminous layer as the outermost layer.
- One method of providing a layer containing a fluorescent or luminous substance dispersed in a coating film involved in light interference is to mix the fluorescent or luminous substance in the raw material composition by dissolution or dispersion. Then, a film is formed using this.
- fluorescent or luminous substance fine particles (having a particle size larger than that of the substrate to be coated) are contained in a solvent containing raw materials during film formation. (Small fluorescent or phosphorescent particles), and form a film to contain the particles in one or more layers. In this case, it is desirable that the compound be contained in an outer layer, and that it be contained in many layers. In addition, fluorescence due to hetero-aggregation
- Another method for providing a layer containing a fluorescent or luminous substance dispersed and contained in a coating film involved in light interference is to form a multilayer coating powder, heat-treat, The coated powder is immersed in a fluorescent or luminous substance solution and impregnated.
- the outermost layer is made porous by adding an additive during film formation, or by increasing the temperature or heat treatment time, and a fluorescent or luminous substance dispersed or dissolved in a solvent in the voids Is formed by impregnation.
- a titanium oxide film or a zirconium oxide film is formed as a film. Thereafter, the powder is subjected to solid-liquid separation, dried, and subjected to a heat treatment.
- the drying means may be any of vacuum heating drying, vacuum drying, and natural drying. It is also possible to use a device such as a spray dryer in an inert atmosphere while adjusting the atmosphere.
- the heat treatment is performed at 150 to 110 ° C (when the powder core particles are inorganic powder) or 1 for the coating composition that does not oxidize in the air, and the coating composition that easily oxidizes in the inert atmosphere. Heat treatment at 50 to 500 ° C (when the powder core particles are not inorganic powder) for 1 minute to 3 hours.
- the high-refractive-index film is formed in an alcohol solution in which a metal alkoxide, such as a silicon alkoxide or an aluminum alkoxide, having a low refractive index when converted to an oxide and a fluorescent or luminous substance is dissolved.
- a metal alkoxide such as a silicon alkoxide or an aluminum alkoxide
- the powder thus obtained is dispersed, a mixed solution of water, an alcohol and a catalyst is added dropwise with stirring, and the alkoxide is hydrolyzed.
- silicon oxide as a low refractive index film is formed on the surface of the powder coated with the high refractive index film.
- a film of aluminum oxide is formed.
- the high-refractive-index or low-refractive-index film can be formed in an aqueous solvent to which a buffer solution is added.
- a buffer solution for example, titanyl sulfate and titanium chloride are used for the high-refractive-index film.
- water glass and sulfuric acid are used for the low-refractive index film.
- a film can be formed by analyzing raw materials such as aluminum. Thereafter, the powder is subjected to solid-liquid separation, dried in a vacuum, and then subjected to a heat treatment as described above. By this operation, by repeating the operation of forming a two-layer, high-refractive-index metal oxide film on the surface of the powder base particles, a fluorescent or luminous multi-layer coated powder having a multilayer metal oxide film is obtained. can get.
- a special function can be provided by adjusting the thickness of each layer of the alternating coating film having a different refractive index formed on the surface of the base particles.
- an alternating coating film having a different refractive index is formed on the surface of the base particles so that the refractive index n of the substance (unit coating layer) forming the coating film and the wavelength of visible light are adjusted so as to satisfy the following expression (3).
- An alternate film having a thickness d equivalent to an integer m times a quarter is provided in an appropriate thickness and number. As a result, light of a specific wavelength ⁇ (using the interference reflection of Fresnel) is reflected or absorbed.
- a film having a film thickness and a refractive index that satisfies the formula (3) with respect to the target wavelength of visible light is formed on the surface of the base particles, and the refractive index is further formed thereon.
- a film having a reflection or absorption wavelength width specific to the visible light region is formed.
- the order of the materials to be formed is determined as follows. First, when the refractive index of the base particles themselves is high, it is preferable that the first layer is a film having a low refractive index, and in the opposite case, the first layer is preferably a film having a high refractive index.
- the change in optical film thickness which is the product of the film refractive index and the film thickness, is measured and controlled as a reflection waveform using a spectrophotometer or the like.
- the thickness of each layer is adjusted so that the reflection waveform finally becomes the required waveform.
- Design the film thickness For example, when the peak position of the reflection waveform of each unit film constituting the multilayer film is shifted, white powder is obtained. If the peak position of the reflection waveform of each unit film is precisely adjusted, no dye or pigment is used. Both can be colored powders of a single color such as blue, green, and yellow.
- the design should be made in consideration of the particle size and shape of the powder, the phase shift at the mutual interface between the film material and the core particle material, and the peak shift due to the wavelength dependence of the refractive index.
- the shape of the core particle is a parallel plate
- the Fresnel interference by the parallel film formed on the particle plane is designed under the condition that n in the above equation (3) is replaced by N in the following equation (4). I do.
- the attenuation coefficient ⁇ ⁇ is included in the refractive index N of the metal in Expression (4).
- ⁇ is very small and can be ignored.
- N n + i ⁇ (i represents a complex number) (4)
- the damping coefficient ⁇ is large, the phase shift at the mutual interface between the film material and the nuclear particle material becomes large, and further affects the optimum thickness of the interference due to the phase shift in all the layers of the multilayer film.
- the peak position is shifted, so that the color becomes lighter, especially when a single color is formed.
- computer simulation is designed to optimize the combination of film thicknesses in advance.
- the interference of a film formed on a curved surface such as a spherical powder occurs similarly to a flat plate, and basically follows the Fresnel interference principle. Therefore, the coloring method can be designed to be a single color.
- the light incident on and reflected by the powder causes complex interference.
- These interference waveforms are almost the same as those of a flat plate when the number of films is small. However, as the total number of films increases, the interference inside the multilayer film becomes more complicated.
- the reflection spectral curve can be designed in advance by computer simulation based on the Fresnel interference so that the combination of film thicknesses is optimized.
- the effect of phase shift on the surface of the substrate particles and all films is taken into consideration, and computer simulation is designed to optimize the combination of film thickness in advance.
- the peak shift due to the coating layer on the substrate particle surface and the peak shift due to the wavelength dependence of the refractive index are taken into account.
- the designed spectral curve in order to correct these in the actual film, change the film thickness using a spectrophotometer etc.
- the powder can be vividly colored to a desired color without using a dye or a pigment.
- a coating layer or a colored layer using a coloring material can be provided.
- coloring material that is applied as necessary, as described above.
- the present invention is not limited to these specific examples.
- (cyan pigment) phthalocyanine pigment, lake pigment, etc. inorganic pigment Metal oxide powders such as titania, alumina, silica, zirconia, ceria, and zinc oxide; complex oxide pigments such as cobalt aluminate; yellow-colored coloring materials include (organic dyes) monoazo dyes, azomethine dyes, Oil dyes, lake dyes, etc.
- Green colorants include (organic dyes) phthalocyanine green dyes, malachite Lake dyes such as green, oil dyes, etc. (organic pigments) Naphtho, such as pigment green Green pigments, green insoluble azo pigments such as green gold, phthalocyanine green pigments, etc. (inorganic pigments), cobalt green (CoO—Zn—MgO), viridian, emerald green, chrome green Red colorants such as (organic dyes) lake red dyes, oil red dyes, etc.
- Magenta colorants include (dyes) anthraquinone dyes, thioindigo, oil-based magenta dyes, etc.
- pigments xanthene-based magenta dye phosphorus
- Cyan colorants such as a colorant comprising an organic dye and an organic carboxylic acid include (organic dyes) phthalocyanine dyes, oil dyes, lake dyes, etc., (organic pigments) phthalocyanine pigments, lake pigments (Inorganic pigments)
- Metal oxide powders such as titanium, alumina, silica, zirconia, ceria, and zinc oxide, and composite oxide pigments such as cobalt aluminate.
- the toning material basically adjusts the color, and is used for performing color matching of a desired color by using a plurality of pigments.
- Specific examples of the toning material to be applied include the following.However, the present invention is not limited to these specific examples. It is possible.
- (organic dyes / pigments) lake dyes such as alkalible lakes and peacock blue lakes, lake pigments, metal-free phthalocyanines, and phthalocyanine compounds such as copper phthalocyanines Pigments, (inorganic pigments) oxides such as ultramarine, sulfide composite pigments, copper-based ultramarine blue pigments, such as iron blue and mirolyble, and cobalt oxide-based composite oxides, such as cobalt blue and cerulean blue pigments
- yellow toning materials include (organic dyes) first dyes such as first toy yellow, etc., and (organic pigments) azo pigments such as hansa yellow, naph tonore yellow, pigment yellow, and permanent yellow.
- (Inorganic pigments) Lead, zinc, barium, etc. chromates (red lead graphite, chrome vermilli) ), Sulfides such as cadmium sulfide, composite oxide pigments such as titanium yellow, etc., and green color toning materials include (organic dyes) lake dyes such as malachite green lake and acid green lake. , (Organic pigments) nitroso pigments such as pigment green and naphthol green, azo pigments such as green gold, phthalocyanine pigments such as phthalocyanine green, polychrome copper phthalocyanine, etc.
- Purple toning materials such as oxides (red-mouthed lead) such as lead chromate and composites of chromic acid and lead sulfate (chrome vermillion) include (organic dyes) methyl violet lake. Lake pigments, etc., (organic pigments) azo pigments, such as fast violet, etc. (inorganic pigments) phosphates, such as cobalt phosphate and manganese phosphate, and pigments, such as complex oxides of cobalt arsenic, etc. Is mentioned.
- a white pigment such as titanium oxide, zinc oxide, tin oxide, silicon oxide, antimony oxide, lead oxide, or a composite oxide thereof is used.
- carbonates such as calcium carbonate, magnesium carbonate and barium carbonate, or sulfates such as barium sulfate and calcium sulfate, sulfides such as zinc sulfate and the above oxides, carbonates and sulfates Combined oxides and complex hydrated oxides.
- a medium (vehicle) of the color ink or the paint-like composition (fluid) a conventionally known varnish used for color printing, color magnetic printing, and color magnetic paint may be used.
- a liquid polymer, a polymer or a monomer dissolved in an organic solvent, or the like can be appropriately selected and used depending on the method of application of the type of powder and the application.
- liquid polymer may include polygens such as polypentadiene and polybutadiene, polyethylene glycols, polyamides, polypropylenes, waxes, and copolymers of these.
- Polymers soluble in organic solvents include olefin polymers, acrylic resins such as oligoester acrylates, polyesters, polyamides, polyisocyanates, amino resins, xylene resins, ketone resins, and gen-based resins. Examples thereof include resins, rosin-modified phenolic resins, gen-based rubbers, black chloroprene resins, waxes, and modified or copolymers thereof.
- Examples of monomers soluble in an organic solvent include styrene, ethylene, butadiene, and propylene.
- organic solvent examples include alcohols such as ethanol, isopropanol and normal propanol, ketones such as acetone, benzene, toluene, xylene, cesine, and benzene. And hydrocarbons, esters, ethers, and modified products and copolymers thereof.
- Color toner, color dry ink, and color dry paint-like composition are prepared by directly kneading a fluorescent or luminous multi-layer coating powder with a resin or, if necessary, a coloring material.
- a powdery fluorescent or phosphorescent composition can be obtained.
- the multilayer-coated powder can be made into a powdery fluorescent or phosphorescent composition by using a polymerization method such as an emulsion polymerization method or a suspension polymerization method.
- the resin produced by the above-mentioned pulverization method is not particularly limited, but may be polyamide, epoxy resin, polyester, melamine resin, polyurethane, butyl acetate resin, silicon resin, acrylate ester, or the like. Examples include polymers or copolymers of methacrylic acid esters, styrene, ethylene, butadiene, propylene, and derivatives thereof.
- the fluorescent or luminous composition of the present invention has the following features: (i) a colorless or paint-like composition (fluid) and (2) a color toner, a color dry ink-like composition (powder). Take.
- a fluid it may be a color, paint, etc., the coloring material, the toning material, a solidifying accelerator for late drying resin, a thickener for increasing the viscosity, and a decreasing viscosity. And a component such as a dispersant for dispersing the particles together.
- the colorant / toning material In the case of producing powder by a pulverization method, the colorant / toning material, a solidification accelerator for a resin that dries slowly, a fluidizing agent for reducing the viscosity during kneading, For dispersion, components such as a dispersing agent, a charge controlling agent for fixing to paper or the like, and wax can be included.
- the multi-layer coated powder in the fluorescent or luminous composition of the present invention can be formed by a single powder or a combination of a plurality of powders having different spectral characteristics by wet wet dry color printing or wet and dry color magnetic printing.
- visible light invisible light (ultraviolet and infrared), fluorescent or phosphorescent coloring and magnetism, electricity (change in electric field), and electron beam, using three primary color powders. It has an identification function of eight combinations of X-rays and can be applied to other uses that require security functions, such as color magnetic inks for preventing forgery of printed matter.
- the substrate of the target printed matter is not particularly limited as long as it can be printed with ink or the like and can be filled or coated as a functional film.
- paper for example, paper, polymer, resin (for example, plastic), Glass, metal (for example, aluminum, etc.), fiber (for example, woven fabric, knitted fabric, etc.), and leather (for example, natural leather, artificial leather, etc.) and the like.
- the fluorescent or luminous composition of the present invention When the fluorescent or luminous composition of the present invention is applied to a substrate as a color coat or a paint composition or a color toner, a color dry ink or a color dry paint composition,
- the relationship between the fluorescent or luminous multi-layer coating powder and the resin content in the fluorescent or luminous pigment coating composition is 1: 0.5 to 1:15 by volume. If the content of the medium is too small, the applied film does not adhere to the object to be coated. On the other hand, if the amount is too large, the color of the pigment is too light to be said to be a very good ink or paint.
- the relationship between the amount of the pigment and the resin in the color ink or the coating composition and the amount of the solvent is 1: 0.5 to 1:10 by volume, and the amount of the solvent is too small. And the viscosity of the paint is too high to apply uniformly. On the other hand, if the amount of the solvent is too large, it takes time to dry the coating film, and the efficiency of the coating operation is
- the color density of the coating film when printing, melt-transferring, or applying a coating material to a substrate is determined by the amount of pigment per unit area of the substrate.
- the amount of the fluorescent or luminous multi-layer coating powder of the present invention on the object after the paint is dried is 5 to 300 g per square meter in area density, preferably 1 to 300 g. If it is 0 to 150 g, a good paint color can be obtained. If the area density is smaller than the above value, the ground color of the object to be coated appears, and even if the area density is larger than the above value. It is uneconomical because the color density of the paint color does not change.
- the coating film thicker than such a thickness, since the thickness exceeds the hiding power of the coating material, because the coating effect is not obtained. However, this is not the case when thick coating is applied because the thickness of the coating is reduced in consideration of the abrasion of the coating.
- the fluorescent or luminous composition of the present invention may be previously contained in a substrate.
- the material of the object is not particularly limited, for example, molded articles such as polymers and resins (eg, plastics), glass, metal (eg, aluminum, etc.), fibers (eg, woven fabric, knitted fabric, etc.), leather (For example, artificial leather).
- the substrate to which the fluorescent or luminous composition of the present invention is attached or contained as described above can be used as an authenticity discrimination target. That is, by illuminating the object with light (visible light, ultraviolet light, infrared light, or the like), and by recognizing fluorescence or light storage, the authenticity of the object can be determined. Furthermore, by combining the discrimination by at least one of magnetism, electric field, electron beam, and X-ray, it is possible to increase the accuracy of the authenticity.
- BASF-made carbonyl iron powder (average particle size 1.8 ⁇ , magnetization at 10 kOe is 203 emu / g) 20 g of silicon ethoxide beforehand After dispersing in a solution in which g was dissolved, a mixed solution of ammonia water (29%) 8 .- (Tg and deionized water 8.0 g) was added with stirring. The reaction was carried out at room temperature. After the reaction, the mixture was diluted and washed with sufficient ethanol, filtered, and dried in a vacuum drier at 110 ° C. for 3 hours. After drying, heat treatment was performed at 800 ° C. for 30 minutes in a nitrogen atmosphere using a rotary tube furnace, followed by cooling to obtain silica-coated iron powder A.
- Spectral reflection curve having a peak wavelength of the powder A 2 is a 4 6 3 nm, reflectance at the peak wavelength of 3 to 7% and a bright blue-green.
- the magnetization of the powder A 2 at 10 kOe was 176 emuZg.
- the resulting powder A 4 are satisfactory dispersibility and was an independent particle.
- the thickness of the fourth layer Chitayua film of the powder A 4 was 56 nm.
- Spectral reflection curve having a peak wavelength of powder A 4 is 435 nm, reflectance at the peak wavelength of 4 to 6% and a vivid cyan color.
- the powder A 4 20 g was dispersed in a solution obtained by dissolving silicon ethoxide 0. 5 g to advance ethanol 1 58. 6 g, while stirring, ammonia water (29%) 3. O g and A mixed solution of 3.0 g of deionized water was added. After the addition, the reaction was carried out at room temperature for 1 hour. After the reaction, the mixture was diluted and washed with sufficient ethanol, filtered, and dried in a vacuum drier at 110 ° C. for 3 hours. After drying, cooling, silica one Chita two Ashirika hydrophobically treated - to obtain titania-coated iron powder A 5.
- the dispersion A of the fluorescent pigment composition was applied to art paper using a blade coater.
- the coating amount (after drying) of the fluorescent pigment composition was 59 g / m 2 .
- the spectral reflectance curve of the obtained coated paper 1 was as shown in FIG.
- the color of coated paper 1 was bright cyan with a peak wavelength of 433 nm and a reflectance of 65%.
- Example 2 The same operation as in Example 1 was performed. However, no copper-containing zinc sulfide force dome particles as a fluorescent substance were mixed in the dispersion in the preparation of the fluorescent pigment composition.
- the reflection peak of the coated paper was 433 nm in the visible light region, and the reflectance was 65%. However, even when the coated paper 2 was irradiated with an ultraviolet lamp in some places, no fluorescent color was observed.
- the phosphor is mixed and dispersed, and powdered by spray drying:
- Powder B was dispersed in a liquid obtained by adding 4.6 g of titanium isopropoxide to 198.3 g of ethanolol in advance, and then, with stirring, pure water 6. A solution obtained by mixing 3 g with 47.9 g of ethanol was added dropwise over 1 hour. After the addition, the reaction was carried out at room temperature for 4 hours. After the reaction, the resultant was diluted and washed with sufficient ethanol, filtered, and dried in a vacuum drier at 110 ° C. for 3 hours.
- the resulting powder B 2 After drying, further using a rotary tube furnace, subjected to a 30 minute heat treatment at 650 ° C in a nitrogen atmosphere, and cooled to obtain a silica-titania-coated iron powder B 2.
- the resulting powder B 2 has good dispersibility and was an independent particle.
- the thickness of the titania film of the powder B 2 was 65 nm.
- Spectral reflection curve having a peak wavelength of the powder B 2 is 573 nm, reflectance at the peak wavelength of 35% and a bright green color.
- the powder B 3 20 g was dispersed in a solution prepared by adding titanium isopropoxide Boki Sid 4. 6 g to advance ethanol 1 98. 3 g, with stirring, deionized water 6.0 g was mixed with 47.9 g of ethanol over 1 hour.
- the reaction was carried out at room temperature for 4 hours. After the reaction, the reaction mixture was diluted and washed with sufficient ethanol, filtered, and dried in a vacuum drier at 110 ° C. for 3 hours. After drying, further using a rotary tubular oven in a nitrogen atmosphere subjected to 30 minutes heat treatment at 6 50 ° C, cooled, silica-titania - obtaining a titania-coated iron powder B 4 - Siri force. The resulting powder B 4 has good dispersibility and was an independent particle child. The thickness of the fourth layer Chitayua film of the powder B 4 was 69 nm.
- Spectral reflection curve having a peak wavelength of the powder B 4 is 567 nm, reflectance at the peak wavelength of 4 to 6% and a bright yellow-green.
- the powder B 4 20 g was dispersed in a solution obtained by dissolving silicon ethoxide 0. 5 g to advance ethanol 1 58. 6 g, while stirring, ammonia water (29%) 3. O g and A mixed solution of 3.0 g of deionized water was added. After the addition, the reaction was carried out at room temperature for 1 hour. After the reaction, the mixture was diluted and washed with sufficient ethanol, filtered, and dried in a vacuum drier at 110 ° C. for 3 hours. After drying, cooling, silica-titania and hydrophobic treatment - to obtain a silica-titania-coated iron powder B 5.
- the paint dispersion B L of the fluorescent pigment composition was spray-dried at 90 ° C. in a nitrogen gas atmosphere using a spray drier to obtain a spherical powder and a fluorescent pigment composition BP.
- the reflection peak of this spherical powder, the fluorescent pigment composition BP was 586 nm in the visible light region, the reflectance was 63%, and it was bright yellow.
- the spherical powder fluorescent pigment composition BP was packed in a quartz glass holder, and when irradiated with an ultraviolet lamp in place, the color emitted a pale orange fluorescence.
- the coating dispersion AL 2 of the phosphorescent pigment composition was applied to Ato paper with a blade coater.
- the coating amount (after drying) of the phosphorescent pigment composition was 50 g / m 2 .
- the spectral reflectance curve of the obtained coated paper 3 was as shown in FIG.
- the color of the coated paper 3 was a bright cyan color with a peak wavelength of 433.3 nm and a reflectance of 65%.
- Example 3 The same operation as in Example 3 was performed. However, the dispersion liquid in the preparation of the phosphorescent pigment composition was not mixed with the copper-containing zinc sulfide force dome particles as the phosphorescent substance.
- the reflection peak of the coated paper was 433 nm in the visible light region, and the reflectance was 65% .However, even when the coated paper 4 was irradiated with an ultraviolet lamp in a dark place, phosphorescence of phosphorescence was observed. Did not.
- the phosphorescent substance is mixed and dispersed, and powdered by spray drying:
- the coating dispersion BL 2 of the phosphorescent pigment composition using a spray dryer, a nitrogen gas atmosphere during the spray dried 90 ° C, to obtain a powdery phosphorescent pigment composition BP 2.
- the reflection peak of the spherical powder luminous pigment composition BP 2 is 438 nm in the visible light region, the reflectance was 64%, was a bright cyan color.
- Fluorescent multi-layer coated powder using magnetic substance Noro 'containing fluorescent substance in second layer titania coating:
- BASF-made carbonyl iron powder (average particle size: 1.8 / m, magnetization at 10 k ⁇ e is 203 emu / g) Disperse 10 g in 100 ml of ethanol and heat the container in an oil bath. The temperature of the solution was maintained at 55 ° C. 6 g of silicon ethoxide, 8 g of aqueous ammonia (29%) and 8 g of water were added thereto and reacted for 2 hours with stirring. After the reaction, the reaction solution was diluted and washed with ethanol, filtered, and dried in a vacuum drier at 110 ° C. for 3 hours. After drying, for rotary type Heat treatment was performed at 650 ° C for 30 minutes to obtain silica-coated iron powder. The thickness of the obtained silica coating film was 98 nm, and the dispersion state was very good.
- Spectral reflection curve having a peak wavelength of the powder C 2 is 450 nm, reflectance at the peak wavelength of 35% and a vivid cyan color.
- the magnetization of the powder C 2 at 10 kOe was 167 emu / g.
- the powder C 2 1 0 g was dispersed in Etanonore 1 O Om l, and maintained by heating the container in an oil bath the temperature of the liquid to 55 ° C. 6 g of silica conethoxide, 8 g of aqueous ammonia (29%) and 8 g of water were added thereto and reacted for 2 hours with stirring. After the reaction, the reaction mixture was diluted with ethanol, washed, filtered, and dried in a vacuum drier at 110 ° C. for 3 hours. After drying, 30 minutes subjecting silica to a heat treatment at 650 ° C using a rotary tubular oven - to obtain a titanium two Ashirikako Bokuko body C 3. The resulting 3-layer silica film thickness of the powder C 3 is 99 nm, the dispersion state was very good.
- the reflection peak of the coated paper was 553 nm in the visible light region, and the reflectance was 53%. When fluorescent light was applied, yellow fluorescent light was emitted. Comparative Example 3
- Multi-layer coated powder using magnetic material; without phosphor Multi-layer coated powder using magnetic material; without phosphor:
- Example 5 The same operation as in Example 5 was performed. However, phosphor copper-containing zinc sulfide fine particles were not dispersed and mixed in the reaction solution in the second layer titania coating.
- the reflection peak of the coated paper was 553 nm in the visible light region, and the reflectance was 53%. However, even when irradiated with a fluorescent lamp, no fluorescent color was observed.
- Example Silica titanium two obtained in 5 Ah silica-titania-coated iron powder C 4
- rutile titanium oxide silane coupling agent surface treated product, average 40 g of a particle size (0.2 xm) and 110 g of a styrene monomer were mixed and made uniform.
- This mixture was kept at 70 ° C. in advance, 25 g of sodium n-dodecyl sulfate was added to a solution of distilled water, and 10% aqueous ammonium persulfate solution was added to the emulsion using a high-speed stirrer.
- Powder D was spherical particles having a particle size of about 10 and was light green, had a reflection peak of 555 nm, and had a reflectivity of 53%.
- the powder E 3 20 g were dispersed in ethanol solution of titanium ethoxide 3. O g to advance ethanol 1 98. 3 g, with stirring, deionized water 3. O g and Etano Lumpur 2 3.7 g of the mixed solution was added dropwise over 1 hour. After dropping, react at room temperature for 5 hours, wash with sufficient ethanol, dry in vacuum, and further in a nitrogen atmosphere using a rotary tube furnace at 500. C, heat treated for 30 minutes to obtain silica-titania-titania-coated iron powder E 4
- the powder E 4 20 g were dispersed in ethanol solution of Shirikone Bok Kishido 3. O g to advance ethanol 1 58. 6 g, while stirring, ammonia water 8. O g of deionized water 8. 0 g of the mixed solution was added. After the addition, react for 5 hours at room temperature, wash with sufficient ethanol, dry in vacuum, and heat-treat in a nitrogen atmosphere at 50 for 30 minutes using a rotary tube furnace to obtain silica-titania-silica-titania. It was obtained Ashirikako Bokutetsu powder E 5.
- the powder E 5 20 g were dispersed in ethanol solution of titanium ethoxide 3. O g to advance ethanol Ichiru 1 98. 3 g, while stirring, deionized water 3. O g and Etano over 23.7 g of the mixed solution was added dropwise over 1 hour. After the dropwise addition, the mixture was reacted at room temperature for 5 hours, washed with a sufficient amount of ethanol, dried in vacuum, and further subjected to 500 rpm in a nitrogen atmosphere using a rotary tube furnace. In C, and heat treated for 30 minutes, silica - to obtain a titanium two Ashirika one titanium two Akoto iron powder E beta - Chita two Ashirika.
- the spectral reflectance curve of the coated paper 5 obtained after drying was as shown in FIG.
- the color of Coated Paper 5 was brilliant greenish blue with a reflectance of 43% at 460 nm.
- Fluorescent multi-layer coating powder using magnetic material In case of phosphor single layer coating:
- BASF carbonyl iron powder (average particle size: 1.8 ⁇ , magnetization at 10 kOe: 203 emu / g) 20 g of ethanol was prepared by dissolving 3.5 g of silicon ethoxide in 158.6 g of ethanol in advance After being dispersed in the solution, a mixed solution of 8.0 g of aqueous ammonia and 8.0 g of deionized water was added with stirring. After the addition, react for 5 hours at room temperature, wash with sufficient ethanol, dry in vacuum, heat-treat in a nitrogen atmosphere in a rotary tube furnace at 800 ° C for 30 minutes, cool, cool, and coat silica-coated iron powder. The body F was obtained. Second layer zinc sulfide coating:
- this fourth layer of zinc sulfide was 55 nm, the reflection peak of powder F 4 was 385 nm, and it was purple with a reflectivity of 41%. Fluorescent light was applied to powder F 4 ⁇ , Color ⁇ ) A fluorescent color was seen and it became brighter than two layers.
- the powder thus obtained was mixed with 35 parts of the polyester resin-based varnish with 65 parts of the powder, and the obtained liquid luminous pigment composition was coated with a blade coater at a coating amount of 70 g / m 2 . Then, the resultant was applied to A4 size art paper, dried, and then coated paper 6 of the luminous pigment composition was obtained.
- the color of the coated paper 6 was a bright blue-green with a peak wavelength of 553 nm and a reflectance of 53%.
- the coated paper 6 was irradiated with an ultraviolet lamp for one hour in one place, and the color visually observed in a dark place emitted light green phosphorescence.
- Example 10 The same operation as in Example 9 was performed. However, the phosphoric acid copper-containing zinc sulfide force dome particles were not mixed in the reaction solution in the second layer titania coating. The reflection peak of the coated paper was 553 nm in the visible light region, and the reflectance was 53%. However, no phosphorescence was observed even when illuminated with a fluorescent lamp. ⁇ Example 10
- Resin-containing dry powder phosphorescent pigment composition For toner, etc .:
- the magnetization of the powder G at 10 kOe was 52 emu / g. Further, when this phosphorescent composition was irradiated with an ultraviolet lamp for 1 hour, when the coated paper 7 was viewed in a dark place, pale green phosphorescence was observed. When powder G was packed in a glass holder and irradiated with an ultraviolet lamp at a location, pale green phosphorescence was observed.
- Luminescent multi-layer coated powder using magnetic material In case of luminous body impregnation:
- silica one titanium two Ashirika one titania one silica one titanium two aquo one preparative iron powder containing copper cadmium sulfide fine particles of E 6 a phosphorescent material in Example 7 (0. O lm) was dispersed emulsified component in water Immersed in an emulsion having a concentration of 5 g and then solid-liquid separated and dried under vacuum to obtain a phosphor-impregnated silica-titania-silica-titania-silica-titania-silica-titania-silica-coated iron powder H. .
- polyester resin-based varnish 1 0 g the powder H 2 g, further xylene 7 g mixed as a solvent, and an ink
- the coating amount of 6 8 g Zm 2 by a blade coater ink of this composition A 4 It was evenly applied to the plate art paper and dried.
- the spectral reflectance curve of the coated paper 8 obtained after drying was as shown in FIG.
- the color of coated paper 8 was 460 nm, and the color became vivid cyan with a reflectance of 64%.
- the magnetization of the luminous pigment composition coated paper 8 at a magnetic field of 10 kOe was 2595 emu / m 2 .
- the coated paper 8 was turned off the light source of a spectrophotometer with an integrating sphere (V-570, manufactured by JASCO Corporation), and the emission intensity was examined. As a result, a waveform as shown in FIG. 8 was observed. Its color was blue-green.
- the thickness of the Eu-containing aluminate Sanz strontium film is 60 nm, the reflection peaks of the powder I 2 at 500 nm, was green reflectance 28%. Fluorescent light was applied to the powder I 2 for 2 hours. When the powder I 2 was viewed in a dark box, blue phosphorescence was observed.
- E u containing aluminum Nsansu Toro Nchiumu silicas - give the E u containing aluminate Sanz Toro Nchiumu coated iron powder I 4.
- fluorescent lamp powder 1 4 when placed in a dark box, seen blue phosphorescence, the two-layer coating powder 1 2 good Ri bright Natsuta. Industrial applicability
- the fluorescent or luminous composition of the present invention has both color and fluorescent or luminous properties, and has a beautiful and stable color tone of a single color such as blue, green, and yellow. Inks, fillers, and paints. In addition, since it has an interference reflection peak in addition to visible light, it can detect reflected light by ultraviolet and infrared rays, and can determine the authenticity without using a special reading device. The identification enables forgery prevention with high accuracy.
- a magnetic material as a substrate, it can be applied as a coloring material for high-performance color magnetic printing inks, as well as visible light, invisible light (ultraviolet and infrared), and phosphorescence. It has the ability to identify eight combinations of magnetism, electricity (changes in the electric field), electron beams, and X-rays. Things.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Laminated Bodies (AREA)
- Luminescent Compositions (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/856,947 US6666991B1 (en) | 1998-11-27 | 1999-11-25 | Fluorescent or phosphorescent composition |
AU14099/00A AU773200B2 (en) | 1998-11-27 | 1999-11-25 | Fluorescent or phosphorescent composition |
EP99973056A EP1138743A4 (en) | 1998-11-27 | 1999-11-25 | FLUORESCENT OR PHOSPHORESCENT COMPOSITION |
EA200100474A EA004319B1 (ru) | 1998-11-27 | 1999-11-25 | Флуоресцентный или светящийся состав |
CA 2352340 CA2352340A1 (en) | 1998-11-27 | 1999-11-25 | Fluorescent or luminous composition |
KR1020017006655A KR20010093118A (ko) | 1998-11-27 | 1999-11-25 | 형광 또는 축광 조성물 |
NO20012557A NO20012557L (no) | 1998-11-27 | 2001-05-23 | Fluorescerende eller fosforescerende blanding |
HK02101845.3A HK1040413A1 (zh) | 1998-11-27 | 2002-03-11 | 熒光或磷光組合物 |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33773598A JP3601762B2 (ja) | 1998-11-27 | 1998-11-27 | 蛍光顔料組成物 |
JP10/337735 | 1998-11-27 | ||
JP10/357806 | 1998-12-16 | ||
JP35780798A JP2000178468A (ja) | 1998-12-16 | 1998-12-16 | 蓄光顔料組成物 |
JP10357806A JP2000178553A (ja) | 1998-12-16 | 1998-12-16 | 蛍光顔料組成物 |
JP10/357807 | 1998-12-16 | ||
JP36762198A JP3578318B2 (ja) | 1998-12-24 | 1998-12-24 | 蓄光顔料組成物 |
JP10/367621 | 1998-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000032716A1 true WO2000032716A1 (fr) | 2000-06-08 |
Family
ID=27480566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/006587 WO2000032716A1 (fr) | 1998-11-27 | 1999-11-25 | Composition fluorescente ou phosphorescente |
Country Status (10)
Country | Link |
---|---|
US (1) | US6666991B1 (ja) |
EP (1) | EP1138743A4 (ja) |
KR (1) | KR20010093118A (ja) |
CN (1) | CN1225520C (ja) |
AU (1) | AU773200B2 (ja) |
CA (1) | CA2352340A1 (ja) |
EA (1) | EA004319B1 (ja) |
HK (1) | HK1040413A1 (ja) |
NO (1) | NO20012557L (ja) |
WO (1) | WO2000032716A1 (ja) |
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WO2002042393A1 (fr) * | 2000-11-22 | 2002-05-30 | Tokushu Paper Mfg. Co., Ltd. | Particules a emission fluorescente par exposition a un rayonnement infrarouge et papier infalsifiable renfermant de telles particules |
CN103923656A (zh) * | 2013-01-14 | 2014-07-16 | 宁波大学 | 一种氧化钆包裹四氧化三铁磁性荧光纳米空心球的制备方法 |
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GB2367826B (en) * | 2000-10-03 | 2003-07-16 | Luminous Technologies Ltd | Luminescent paint |
DE10130330A1 (de) * | 2001-06-22 | 2003-01-02 | Philips Corp Intellectual Pty | Gasentladungslampe für dielektrisch behinderte Entladungen mit blauen Leuchtstoff |
US7670623B2 (en) | 2002-05-31 | 2010-03-02 | Materials Modification, Inc. | Hemostatic composition |
CN1694930A (zh) * | 2002-10-01 | 2005-11-09 | 日铁矿业株式会社 | 光干涉性多层薄膜涂布的粉体设计方法、制备方法以及光干涉性多层薄膜涂布的粉体 |
US7560160B2 (en) * | 2002-11-25 | 2009-07-14 | Materials Modification, Inc. | Multifunctional particulate material, fluid, and composition |
EP1565323B1 (de) * | 2002-11-28 | 2008-07-30 | Hueck Folien Gesellschaft m.b.H. | Sicherheitselemente mit durch energieeintrag aktivierbaren eigenschaften |
KR100908234B1 (ko) * | 2003-02-13 | 2009-07-20 | 삼성모바일디스플레이주식회사 | 전계 발광 표시 장치 및 이의 제조방법 |
US7821675B2 (en) * | 2003-04-04 | 2010-10-26 | Angstrom Technologies, Inc. | Methods and ink compositions for invisibly printed security images having multiple authentication features |
DE10326645A1 (de) | 2003-06-11 | 2005-01-13 | Bundesdruckerei Gmbh | Wertdokument mit einem Sicherheitselement und Verfahren zur Herstellung des Wertdokuments |
CN1312479C (zh) | 2003-08-08 | 2007-04-25 | 清华大学 | 一种纳米荧光磁粒及其制备方法 |
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- 1999-11-25 EA EA200100474A patent/EA004319B1/ru not_active IP Right Cessation
- 1999-11-25 KR KR1020017006655A patent/KR20010093118A/ko not_active Application Discontinuation
- 1999-11-25 WO PCT/JP1999/006587 patent/WO2000032716A1/ja not_active Application Discontinuation
- 1999-11-25 EP EP99973056A patent/EP1138743A4/en not_active Withdrawn
- 1999-11-25 AU AU14099/00A patent/AU773200B2/en not_active Ceased
- 1999-11-25 CN CNB99815878XA patent/CN1225520C/zh not_active Expired - Fee Related
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WO2002042393A1 (fr) * | 2000-11-22 | 2002-05-30 | Tokushu Paper Mfg. Co., Ltd. | Particules a emission fluorescente par exposition a un rayonnement infrarouge et papier infalsifiable renfermant de telles particules |
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Also Published As
Publication number | Publication date |
---|---|
KR20010093118A (ko) | 2001-10-27 |
CN1225520C (zh) | 2005-11-02 |
EP1138743A4 (en) | 2005-01-19 |
CN1334855A (zh) | 2002-02-06 |
AU773200B2 (en) | 2004-05-20 |
AU1409900A (en) | 2000-06-19 |
NO20012557D0 (no) | 2001-05-23 |
US6666991B1 (en) | 2003-12-23 |
CA2352340A1 (en) | 2000-06-08 |
EP1138743A1 (en) | 2001-10-04 |
HK1040413A1 (zh) | 2002-06-07 |
EA200100474A1 (ru) | 2001-12-24 |
NO20012557L (no) | 2001-07-27 |
EA004319B1 (ru) | 2004-04-29 |
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