EP1846898A2 - Caracteristique de securite pour documents de valeur - Google Patents

Caracteristique de securite pour documents de valeur

Info

Publication number
EP1846898A2
EP1846898A2 EP05817917A EP05817917A EP1846898A2 EP 1846898 A2 EP1846898 A2 EP 1846898A2 EP 05817917 A EP05817917 A EP 05817917A EP 05817917 A EP05817917 A EP 05817917A EP 1846898 A2 EP1846898 A2 EP 1846898A2
Authority
EP
European Patent Office
Prior art keywords
security
feature
metal oxide
substances
shell
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Withdrawn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
EP05817917A
Other languages
German (de)
English (en)
Inventor
Rainer Hoppe
Thomas Giering
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.)
Giesecke and Devrient Currency Technology GmbH
Original Assignee
Giesecke+Devrient GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Giesecke+Devrient GmbH filed Critical Giesecke+Devrient GmbH
Publication of EP1846898A2 publication Critical patent/EP1846898A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/14—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using chemical means
    • 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • 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
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/06—Treatment with inorganic compounds
    • C09C3/063—Coating
    • 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 materials, e.g. electroluminescent or chemiluminescent
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • 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 materials, e.g. electroluminescent or chemiluminescent
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
    • 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 materials, e.g. electroluminescent or chemiluminescent
    • C09K11/08—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • 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.]

Definitions

  • the invention relates to a security feature for security papers, documents of value and the like having an acid-labile feature substance as the core and a shell consisting essentially of metal oxide, the security feature having an increased stability against the action of acids compared to the acid-labile feature substance.
  • the invention also relates to a security paper, a value document and method for producing such a security feature.
  • Security documents such as banknotes, stocks, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other counterfeit securities, such as passports or other identity documents, are usually provided with various security features to increase the security against counterfeiting.
  • a security feature can be embodied, for example, in the form of a security thread embedded in a banknote, an applied security strip or a self-supporting transfer element, such as a patch or a label, which is applied to a value document after its manufacture.
  • security paper is meant hereinafter paper which is e.g. already equipped with security features, such as watermarks, security thread, hologram patch, etc., but is not yet fit for circulation and is an intermediate in the production of the value document.
  • Value document is understood to mean the product that can be run.
  • a security feature is usually equipped with at least one feature substance.
  • feature substances are, for. For example, luminescent, magnetic, electrically conductive or infrared absorbing substances.
  • feature substances often have the disadvantage of low stability to external influences, such as, for example, oxygen, moisture, organic solvents and oxidizing or reducing substances.
  • ie compounds of the chemical composition Y 2 SiO: Tb; ZnS: Cu, AU, Al; Zn, CdS: Cu, Al; CaS: Ce; Y 2 O 2 SiEu; Y 2 O 3 : Eu; CaS: Eu and ZnSrAg are proposed by EP 0 700979 A2 to carry out a coating of the luminescence powder.
  • the luminescent powders are dispersed in a solution containing one or more types of organosilicon compounds and optionally metallo-organic compounds of other elements.
  • a water-containing solvent mixture having a pH between 1 and 5 is used.
  • the coating proposed by EP 0700 979 A2 can not be used for a large number of feature substances.
  • a particular problem is the sensitivity of these feature substances to acidic media, as a result of which the feature substances are chemically modified or even completely decomposed.
  • the sensitivity of the feature substances to acids also represents the decisive obstacle to their use in security elements of value documents.
  • the feature substances When used in value documents, the feature substances must meet high requirements for the stability of their machine-readable or visually perceptible properties.
  • value documents, and in particular banknotes very often come into contact with human skin, which is known to have an acidic pH of between 5.5 and 6.5. The repeated contact with this acidic medium leads to a chemical change of the feature substances, which inevitably causes a change in the machine-readable or visually perceptible properties.
  • the object of the invention is to provide security features which, compared to the security features known from the prior art, have increased resistance to external influences, in particular to the action of acidic media.
  • the security feature according to the invention for security papers, documents of value and the like comprises an acid-labile feature substance which serves as the core of the security feature and a shell consisting essentially of metal oxide.
  • the security feature according to the invention has an increased stability against the action of acids compared to the acid-labile feature substance.
  • the term "capsule” or “sheath” is understood as meaning a complete layer of material which surrounds the acid-labile core. As described below, this layer is built up by a condensation reaction of precursor compounds. Of course, it may happen that the formation of the shell breaks off at one point and the core is thus not completely enclosed, but rather the layer has gaps.
  • the term “shell” is used as the generic term “shell”, “capsule” and “coating.” This term therefore includes both completely and incompletely coated cores.
  • the security features provided with a complete shell and with smears even those with a slightly incomplete coating have the advantage of a significantly increased resistance to the action of acids and thus an increased longevity.
  • skin-irritating or even toxic effects of the acid-labile nuclei or their decomposition products can be reduced or eliminated.
  • the acid stability of feature substances is evaluated in the context of the present invention with regard to the resistance of the physical properties of the feature substances when exposed to an acidic medium.
  • the feature substances when used in value documents, have to fulfill high demands on the durability of their machine-readable or visually perceptible properties.
  • the contact with an acidic medium can lead to a chemical change of the feature substances, which inevitably causes a change in the machine-readable or visually perceptible properties.
  • acid-labile feature substances therefore refers to feature substances which change their machine-readable or visually perceptible physical properties when exposed to an acidic medium.
  • acid stability of the security features according to the invention which is superior to these acid-labile feature substances is present when their machine-readable or visually perceptible physical properties are present when exposed to an acidic medium preferably not or only in one change so little that an examination of a specific physical property in a fastness test will not give a distorted result.
  • a test does not give a falsified result even if the physical property after exposure to an acidic medium changes by a maximum of 50%, preferably a maximum of 30%, particularly preferably a maximum of 10%, with respect to the property before the action of an acidic medium.
  • a luminescent substance is considered to be stable to acid if the intensity of the luminescence emission does not fall below 50% of the intensity, measured before the action of an acidic medium, after exposure to an acidic medium.
  • Acid stability and “acid lability” can also be contrasted using standard banknote tests.
  • An "acid-labile feature substance” is present in particular if the feature substance does not fulfill the customary banknote tests and easily decomposes on exposure to acids
  • a higher acid stability compared to this acid-labile feature substance is present in particular if the encapsulated or coated safety features are the usual ones Banknote tests exist, that is, they do not decay under the experimental conditions used there and do not significantly alter their physical properties.
  • the physical property is measured and compared with the value before the action of the acid.
  • the physical property is measured as above.
  • one or more luminescent substances with characteristic luminescence properties are used as the acid-labile feature substance.
  • luminescent substances based on host lattices doped with certain chromophores have recently been developed. It has been found that these luminescent substances are excellently suited as feature substances of security features for value documents.
  • these luminescent substances are particularly preferably used as the acid-labile core.
  • magnetic substances, electrically conductive substances or substances absorbing in the infrared wavelength range are frequently used as feature substances for value documents.
  • the vast majority of these compounds have no or insufficient stability to acids and are therefore also preferably used as the acid-labile feature substance.
  • the feature substance absorbing in the infrared wavelength range is preferably the compound comprising sulfides, fluorides, oxides and / or mixed oxides, in particular of indium, arsenic, antimony, gallium and / or tin.
  • the feature substance is particularly preferably indium tin oxide.
  • the tin content of indium tin oxide I Cfo Sn can be varied.
  • the indium tin oxide has a tin content of 1 to 8 mol% tin. Particularly preferably from 5 to 8 mol%, very particularly preferably 7 mol%.
  • the acid-labile core may of course also comprise a mixture of a plurality of luminescent substances, a mixture of a plurality of magnetic substances, a mixture of a plurality of electrically conductive substances or a mixture of a plurality of IR absorbers.
  • the core can also consist of a mixture of luminescent substances, magnetic substances, electrically conductive substances and / or IR absorbers.
  • Also included in the present invention are cores made of a mixture of several luminescent substances, several magnetic substances, a plurality of electrically conductive substances and a plurality of IR absorbers.
  • the metal component of the substantially metal oxide shell an element selected from the group consisting of aluminum, barium, lead, boron, lanthanum, magnesium, silicon, titanium, zinc, zirconium, cobalt, copper, iron and mixtures thereof is preferably used , Particular preference is given to using a metal selected from the group consisting of aluminum, silicon, titanium, zirconium and mixtures thereof.
  • the shell of the security element consists essentially of silicon oxide.
  • the radical designated "R" is an organic radical which is the same or different can be.
  • the compounds Me (OR) n represent precursor compounds from which the metal oxide shell of the security features according to the invention is constructed by condensation reactions described in more detail below. Since it is to be expected that the condensation reactions will not always be complete, part of the precursor remains unchanged or partially condensed in the shell. Following the condensation reaction may optionally be a temperature treatment preferably at 200 to 1000 0 C, more preferably at 300 to 500 0 C are connected. This preferably leads to a completion of the condensation reactions.
  • Me (OR) n represents a schematic notation for a chemical compound consisting of metal, oxygen and organic radicals.
  • the index n ie the number of radicals R present, is determined by the number of valencies of the metal Me, that of 1 can be up to 6.
  • Me (OR) n a whole series of compounds are mentioned, which fall under the name Me (OR) n , by way of example only the substances di-ethoxy-di-methoxysilane and tri-butoxyaluminum are mentioned here.
  • a certain type of metal precursor may also contain various radicals "R.”
  • di-ethoxy-dimethoxysilane for example, two methyl radicals and two ethyl radicals are present.
  • R is selected from the group consisting of alkyl, alkenyl, alkynyl, allyl, amino, aryl, benzyl, carboxy, epoxy and mixtures thereof.
  • the organic radicals methyl, ethyl, propyl, butyl or 2-methoxyethoxy are particularly preferably used.
  • the size of the cores or security features usually depends on the purpose.
  • the diameter is preferably greater than 1 ⁇ m.
  • this core size is suitable for use in screen printing or for the introduction of security features in the paper in this production.
  • the core has a diameter which is between 1 ⁇ m and 50 ⁇ m, preferably between 1 ⁇ m and 20 ⁇ m, and particularly preferably about 10 ⁇ m.
  • these diameters are suitable for luminescent, magnetic or electrically conductive compounds.
  • the core has a diameter of less than 1 ⁇ m, more preferably less than 600 nm.
  • this core size is suitable for use in the ink-jet process.
  • these diameters are suitable for IR-absorbing compounds.
  • the core and shell security feature preferably has a diameter which is between 0.5 .mu.m and 60 .mu.m and more preferably between 1 .mu.m and 20 .mu.m. Preferably, 99% of all security feature particles have a particle diameter of less than 20 ⁇ m.
  • the sheaths have a thickness of 10 microns and less, more preferably of 1 micron and less.
  • the specified diameter ranges all types of security elements, security papers and documents of value can easily be produced when using the security features according to the invention.
  • security features for value documents may include multiple feature substances. According to another advantageous embodiment of the present invention, this can be realized in that in addition to acting as the core of the security feature acid-labile feature substance and the shell of the security feature fulfills the function of a feature substance.
  • the shell may for example have characteristic luminescence, magnetic or IR absorption properties or be electrically conductive.
  • Characteristic luminescence properties can be achieved in particular by doping with a rare-earth metal, that is to say by doping with, for example, Pr 3+ , Nd 3+ , Sm 3+ , Eu 3+ , Tb 3+ , Dy 3+ , Ho 3+ , Er 3 + , Tm 3+ or Yb 3+ .
  • the shell is thus preferably doped with one or more of these elements.
  • the doping is carried out in a simple manner, for example by adding the corresponding precursor compounds Me (OR) 3 before the condensation reaction of the metal oxide precursor forming the main constituent of the shell.
  • the present invention also includes a security element for security papers, value documents, and the like, the security element including one or more security features as indicated above.
  • These security elements can be designed, for example, in the form of a security strip, a security thread, a security strip or a transfer element for application to a security paper, value document or the like.
  • the present invention also comprises a security paper for the production of security documents, such as banknotes, identity cards or the like, the security paper containing one or more security features, as stated above, and / or having one or more security elements, as indicated above ,
  • the security feature (s) is added to the paper pulp.
  • the feature substance (s) is appropriately printed on the paper.
  • the ink-jet method is preferably used for printing the IR-absorbing security feature.
  • the present invention additionally comprises a value document, such as a banknote, a passport, a document of identification or the like, the document of value containing one or more of the above-mentioned security features and / or having one or more of the above-mentioned security elements and / or one having the above-mentioned security papers.
  • a value document such as a banknote, a passport, a document of identification or the like
  • the document of value containing one or more of the above-mentioned security features and / or having one or more of the above-mentioned security elements and / or one having the above-mentioned security papers.
  • the acid-labile feature substances forming the core of the security feature according to the invention are excellently suitable for the forgery-proof identification of valuable documents.
  • the value document may also include a window area covered by the security element or a hole covered therewith.
  • the present invention also encompasses the use of the above-identified security features for the production of security paper.
  • the present invention also relates to the use of one of the security features described above, one of the security elements described above, one of the security papers described above, or one of the value documents described above for securing goods of any kind.
  • the production of the security features according to the invention can in principle be carried out by all methods known from the prior art for coating small particles.
  • mechanical-physical processes those skilled in the art, for example, spray drying, Mehrstoffdüsen- method, dip or centrifuge method, coating in a fluidized bed, coating in moving beds, electrostatic microencapsulation and vacuum encapsulation familiar.
  • Chemical processes include coacervation, complex coacervation, chemical vapor deposition, phase condensation and encapsulation with synthetic film-forming agents.
  • these shells are intended to ensure stabilization against the action of acids, but on the other hand, the detection of the specific machine-readable or visually perceptible properties of the acid-labile core should still be possible even after the encapsulation.
  • the processes of the invention must ensure that the condensation reactions take place long enough to ensure complete encapsulation of the core, but on the other hand do not lead to the formation of a three-dimensional gel.
  • the methods are selected to provide controlled growth of the shell.
  • the pH of the solutions is adjusted according to the invention so that the condensation and the hydrolysis reactions proceed at approximately the same reaction rate. So it must be a clearly lying in the basic pH of pH> 8, preferably> 9, set.
  • the salt loading of the reaction solution also has an influence on the growth of the shell on the core.
  • the conductivity of the reaction solution is changed, and thus probably affects the double charge layer on the core.
  • the salt concentration can be through Addition of salts, such as alkali metal or ammonium salts, such as NaCl, KCl, NH4Cl controlled. The addition can be made to the reaction solution or to the solid starting materials.
  • the security features according to the invention are produced by reaction of the feature (s) and one or more metal oxide precursors in a solvent under basic conditions at a pH> 8, preferably> 9.
  • Value-increasing substances are used, including substances that release the base only by heating such as Adamantane or urea.
  • the rate of the condensation reactions in this case can be controlled by varying the parameters reaction time, salt loading, amount of water, solvent, temperature, stirring and / or pH.
  • the security features according to the invention are prepared by dispersing the feature substance (s) in a solvent under basic conditions at pH> 8, preferably> 9, followed by slow dropwise addition of a liquid metal oxide precursor or a solvent in a solvent. solved metal oxide precursors.
  • the feature substances serve in this case as condensation nuclei for the condensation of the metal oxide precursor.
  • the rate of the condensation reactions and the quality of the reaction products can in this case be controlled by varying the parameters of salt loading, reaction time, amount of water, solvent, temperature, stirring and / or pH.
  • the metal oxide precursor dissolved, for example, in ethanol is thus present in the form of very small droplets within the dispersion of the feature substance. As a result, condensation of the metal oxide precursor molecules with one another and thus gel formation is prevented.
  • the security features according to the invention are produced by dispersing the feature substance (s) and dissolving one or more types of metal oxide precursor in a solvent at a neutral or slightly basic pH, followed by slow dropwise addition of a base.
  • the rate of the condensation reactions in this case can be controlled by varying the parameters of salt loading, amount of water, temperature, stirring and / or rate of addition of the base.
  • the reactions (II) and (III) are shown schematically in FIG. 1 for a four-terminal metal.
  • the feature substance MS is shown as a hatched circle in FIG. 1 and FIGS. 2 to 4 mentioned below. This representation corresponds to a section through an abstracted as a ball visualized feature substance.
  • the two metal oxide precursors associated with the feature substance can now condense with one another according to the scheme shown in FIG. In further condensation steps, a complete shell of metal oxide forms around the feature substance (see FIG. 3). As the reaction proceeds, the formation of further layers of metal oxide around the core begins. The beginning of this process is shown schematically in FIG.
  • the condensation of several metal oxide precursors which leads to gel formation should be prevented as far as possible.
  • Such condensation reactions can be described schematically for a tetravalent metal by the following two types of reactions:
  • solvents it is possible to use protic and aprotic solvents, in particular water, ethanol, isopropanol, butanol or mixtures thereof.
  • the solvent used is water, ethanol or a water / ethanol mixture.
  • an aqueous ammonia solution is added to adjust the basic conditions.
  • the feature substances are provided with an adhesion promoter before the application of the envelope.
  • the adhesion promoter is e.g. an aminomethoxy-functional compound, e.g. addid900 from Wacker Chemie or APS (3- (2-aminoethylamino) propyl-trimethoxysilane), or other suitable substances, e.g. KR44 from Wacker Chemie (isopropyl tri (N-ethylene-diamino) ethyl titanate).
  • the feature substance is dispersed in the solvent and the adhesion promoter is added to the dispersion.
  • the adhesion promoters hydrolyze autocatalytically. After a first thin coating of the adhesion promoter has settled on the feature substance, the pH is optionally increased to> 8, preferably> 9, and in a further step the shell is applied by one of the methods described.
  • the speed of the reactions is influenced by the concentration of the substances used, the temperature, the amount of water, the reaction time, the addition time, the solvents used and by the adjusted pH.
  • the envelope can be designed as a double envelope.
  • the feature substance is preferably dispersed in a solvent under basic conditions (pH preferably> 8, particularly preferably> 9) and then the metal oxide precursor is slowly added dropwise.
  • the reaction product namely the coated core, is filtered off in a second step and dispersed as in the first step and reacted again with a metal oxide precursor.
  • the metal oxide precursors used in the first and second steps can be identical but also different.
  • the pH adjustment can be achieved by using acid-functional metal oxide precursors (e.g., carboxy group) or by adjusting a buffer system.
  • acid-functional metal oxide precursors e.g., carboxy group
  • the buffer system may be, for example, the ammonium chloride / ammonium hydroxide system.
  • one or more luminescent substances with characteristic luminescence properties are added as the acid-labile feature substance.
  • one or more magnetic substances are added as the acid-labile feature substance.
  • one or more electrically conductive substances are added as the acid-labile feature substance.
  • IR absorbers are added as the acid-labile feature substance.
  • the metal fraction of the metal oxide precursor used in the process according to the invention is preferably selected from the group consisting of aluminum, barium, lead, boron, lanthanum, magnesium, silicon, titanium, zinc, zirconium, cobalt, copper, iron and mixtures thereof , Particular preference is given to adding a metal oxide precursor, wherein the metal fraction of the metal oxide precursor is selected from the group consisting of aluminum, silicon, titanium, zirconium and mixtures thereof, and very particular preference is given to one or more types of silicon oxide - Precursor added.
  • R is selected from the group consisting of alkyl, alkenyl, alkynyl, allyl, amino, aryl, benzyl, carboxyl, epoxy and mixtures thereof, more preferably R is methyl, ethyl , Propyl, butyl or 2-methoxyethoxy.
  • particularly preferred metal precursors are tetramethoxysilane, tetraethoxysilane, tetra-n-propoxysilane, tetra-n-butoxysilane and tetrakis (2-methoxyethoxy) silane.
  • the shell of the security feature in addition to the acid-labile feature substance acting as the core of the security feature, can also be used fulfill the function of a feature substance.
  • the shell may for example have characteristic luminescence, magnetic or IR absorption properties or be electrically conductive.
  • this can be achieved most simply by adding one or more further metal oxide precursors in addition to the metal oxide precursor which provides the main constituent of the shell.
  • Characteristic luminescence properties can be achieved in this way in particular by adding one or more precursor compounds Me (OR) 3 before the condensation reaction, where Me stands for a rare-earth metal, in particular Pr 3+ , Nd 3+ , Sm 3+ , Eu 3+ , Tb 3+ , Dy 3+ , Ho 3+ , Er 3+ , Tm 3+ or Yb 3+ .
  • the formation of the sheath around the core can be positively influenced by applying a bonding agent to the surface of the core prior to formation of the actual sheath.
  • the quality and quantity of the yield of security features according to the invention can be positively influenced if the reactions are carried out at elevated temperature.
  • the solvent used is a mixture of ethanol and water, the proportion of ethanol being between 5 and 30% by volume.
  • Most metal oxide precursors dissolve better in ethanol than in water.
  • the metal oxide precursors are thus for the most part in the ethanol droplets within the aqueous phase.
  • the hydrolysis of the metal oxide precursors and the subsequent condensation reactions take place in this case only at the phase boundary between ethanol and water and therefore take place with extremely low velocity, which leads to a uniform structure of the shell around the core.
  • the precipitate formed in the course of the reaction is separated from the supernatant solution and advantageously subsequently washed.
  • the separation of the precipitate is advantageously carried out by filtration.
  • the precipitate is finally tempered at elevated temperatures or dried by spraying.
  • the methods of the invention can be carried out in open or closed apparatus.
  • the open apparatus depending on the temperature, more or less alcohol arising during the condensation of the alkoxy compounds can evaporate off.
  • the reaction equilibria see Equation IV and VI
  • the velocity of the Reactions are influenced. If NH 4 OH is used as the base, the pH value can also be changed by evaporation of NH 3 and thus the reactions can be influenced.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Finance (AREA)
  • Accounting & Taxation (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
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  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Credit Cards Or The Like (AREA)
  • Paints Or Removers (AREA)

Abstract

L'invention concerne une caractéristique de sécurité conçue pour des papiers de sûreté, des documents de valeur et analogue, qui comprend une partie centrale constituée d'une substance caractéristique sensibles aux acides, et une enveloppe essentiellement constituée d'oxyde métallique. Selon l'invention, la substance caractéristique sensible aux acides de ladite caractéristique de sécurité présente une stabilité accrue à l'action d'acides.
EP05817917A 2004-12-29 2005-12-15 Caracteristique de securite pour documents de valeur Withdrawn EP1846898A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004063217A DE102004063217A1 (de) 2004-12-29 2004-12-29 Sicherheitsmerkmal für Wertdokumente
PCT/EP2005/013479 WO2006072380A2 (fr) 2004-12-29 2005-12-15 Caracteristique de securite pour documents de valeur

Publications (1)

Publication Number Publication Date
EP1846898A2 true EP1846898A2 (fr) 2007-10-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110606504A (zh) * 2019-10-17 2019-12-24 武汉工程大学 一种分级核壳SnO2微球及其制备方法和应用

Families Citing this family (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004021247A1 (de) 2004-04-30 2005-11-24 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102004039355A1 (de) 2004-08-12 2006-02-23 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
EP1744904B2 (fr) * 2004-04-30 2019-11-06 Giesecke+Devrient Currency Technology GmbH Materiau en feuille et son procede de fabrication
DE102004021246A1 (de) 2004-04-30 2005-11-24 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102004022080A1 (de) 2004-05-05 2005-11-24 Giesecke & Devrient Gmbh Wertdokument mit visuell erkennbaren Kennzeichnungen
DE102004022079A1 (de) * 2004-05-05 2005-11-24 Giesecke & Devrient Gmbh Wertdokument mit Seriennummer
DE102004035979A1 (de) 2004-07-14 2006-02-02 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102004038542A1 (de) 2004-08-06 2006-02-23 Giesecke & Devrient Gmbh Datenträger mit Sicherheitselement und Verfahren zu seiner Herstellung
WO2006018171A2 (fr) * 2004-08-12 2006-02-23 Giesecke & Devrient Gmbh Element de securite comprenant un support
DE102004049118A1 (de) 2004-10-07 2006-04-13 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102004056553B4 (de) * 2004-11-23 2013-03-14 Giesecke & Devrient Gmbh Sicherheitsanordnung für Sicherheitsdokumente und Verfahren zum Herstellen der Sicherheitsdokumente
DE102005028162A1 (de) 2005-02-18 2006-12-28 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102005045566A1 (de) * 2005-03-23 2006-09-28 Giesecke & Devrient Gmbh Mehrlagiges Sicherheitspapier
DE102005022018A1 (de) * 2005-05-12 2006-11-16 Giesecke & Devrient Gmbh Sicherheitspapier und Verfahren zu seiner Herstellung
DE102005025095A1 (de) 2005-06-01 2006-12-07 Giesecke & Devrient Gmbh Datenträger und Verfahren zu seiner Herstellung
DE102005032815A1 (de) 2005-07-12 2007-01-18 Giesecke & Devrient Gmbh Verfahren zur Herstellung eines Sicherheitspapiers, Papiersieb und Formelement für Papiersieb
DE102005032997A1 (de) 2005-07-14 2007-01-18 Giesecke & Devrient Gmbh Gitterbild und Verfahren zu seiner Herstellung
DE102005061749A1 (de) 2005-12-21 2007-07-05 Giesecke & Devrient Gmbh Optisch variables Sicherheitselement und Verfahren zu seiner Herstellung
DE102005062132A1 (de) 2005-12-23 2007-07-05 Giesecke & Devrient Gmbh Sicherheitselement
DE102006015023A1 (de) 2006-03-31 2007-10-04 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102006029852A1 (de) 2006-06-27 2008-01-03 Giesecke & Devrient Gmbh Verfahren zum Aufbringen einer Mikrostruktur, Werkzeugform und Gegenstand mit Mikrostruktur
DE102006029850A1 (de) 2006-06-27 2008-01-03 Giesecke & Devrient Gmbh Sicherheitselement
DE102006039305A1 (de) * 2006-07-21 2008-01-24 Giesecke & Devrient Gmbh Sicherheitsfaden mit optisch variablem Sicherheitsmerkmal
DE102006050047A1 (de) * 2006-10-24 2008-04-30 Giesecke & Devrient Gmbh Durchsichtssicherheitselement mit Mikrostrukturen
DE102006055680A1 (de) * 2006-11-23 2008-05-29 Giesecke & Devrient Gmbh Sicherheitselement mit Metallisierung
DE102006058513A1 (de) 2006-12-12 2008-06-19 Giesecke & Devrient Gmbh Entwässerungssieb und Verfahren zu seiner Herstellung
DE102007029203A1 (de) 2007-06-25 2009-01-08 Giesecke & Devrient Gmbh Sicherheitselement
DE102007029204A1 (de) * 2007-06-25 2009-01-08 Giesecke & Devrient Gmbh Sicherheitselement
DE102007034716A1 (de) 2007-07-23 2009-01-29 Giesecke & Devrient Gmbh Sicherheitselement
DE102007039591A1 (de) 2007-08-22 2009-02-26 Giesecke & Devrient Gmbh Gitterbild
DE102007061827A1 (de) * 2007-12-20 2009-06-25 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102007061828A1 (de) * 2007-12-20 2009-06-25 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102007061979A1 (de) 2007-12-21 2009-06-25 Giesecke & Devrient Gmbh Sicherheitselement
DE102007062089A1 (de) 2007-12-21 2009-07-02 Giesecke & Devrient Gmbh Verfahren zum Erzeugen einer Mikrostruktur
DE102008008685A1 (de) 2008-02-12 2009-08-13 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102008009296A1 (de) * 2008-02-15 2009-08-20 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102008013167A1 (de) 2008-03-07 2009-09-10 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102008016795A1 (de) 2008-04-02 2009-10-08 Giesecke & Devrient Gmbh Verfahren zum Erzeugen einer mikrooptischen Moiré-Vergrößerungsanordnung
DE102008027952A1 (de) 2008-06-12 2009-12-17 Giesecke & Devrient Gmbh Sicherheitselement mit gerasterter Schicht aus Rasterelementen
DE102008028187A1 (de) * 2008-06-12 2009-12-17 Giesecke & Devrient Gmbh Sicherheitselement mit optisch variablem Element.
DE102008029638A1 (de) * 2008-06-23 2009-12-24 Giesecke & Devrient Gmbh Sicherheitselement
DE102008031325A1 (de) 2008-07-02 2010-01-07 Giesecke & Devrient Gmbh Sicherheitselement sowie Verfahren zu seiner Herstellung
DE102008032224A1 (de) 2008-07-09 2010-01-14 Giesecke & Devrient Gmbh Sicherheitselement
DE102008046511A1 (de) * 2008-09-10 2010-03-11 Giesecke & Devrient Gmbh Darstellungsanordnung
GB0818546D0 (en) * 2008-10-09 2008-11-19 Arjo Wiggins Fine Papers Ltd Improved coating method
DE102009035413A1 (de) 2009-07-31 2011-02-03 Giesecke & Devrient Gmbh Identifikationsdokument mit einer personalisierten visuellen Kennzeichnung sowie Verfahren zu dessen Herstellung
DE102009041583A1 (de) 2009-09-15 2011-03-17 Giesecke & Devrient Gmbh Dünnschichtelement mit Interferenzschichtaufbau
DE102009042022A1 (de) 2009-09-21 2011-03-24 Giesecke & Devrient Gmbh Langgestrecktes Sicherheitselement mit maschinenlesbaren magnetischen Bereichen
DE102009056634A1 (de) * 2009-12-02 2011-06-09 Giesecke & Devrient Gmbh Festkörperpartikel mit Siliciabeschichtung
DE102010026627A1 (de) 2010-07-09 2012-01-12 Giesecke & Devrient Gmbh Alkalimetall-und Erdalkalimetall-Niobate und -Tantalate als Sicherheitmerkmalsstoffe
KR20130115023A (ko) * 2012-04-10 2013-10-21 삼성전자주식회사 금속탐지기 검출용 보안용지
DE102012013244A1 (de) 2012-07-03 2014-01-09 Giesecke & Devrient Gmbh Wertdokument, Verfahren zur Überprüfung des Vorliegens desselben und Wertdokumentsystem
DE102012019247A1 (de) * 2012-09-28 2014-04-03 Giesecke & Devrient Gmbh Verfahren zur Prüfung eines Wertdokuments, Wertdokument, Verwendung desselben und Wertdokumentsystem
DE102013016121A1 (de) 2013-09-27 2015-04-02 Giesecke & Devrient Gmbh Wertdokument und Verfahren zur Überprüfung des Vorliegens desselben
DE102013016134A1 (de) 2013-09-27 2015-04-02 Giesecke & Devrient Gmbh Wertdokument und Verfahren zur Überprüfung des Vorliegens desselben
DE102014016858A1 (de) 2014-02-19 2015-08-20 Giesecke & Devrient Gmbh Sicherheitsmerkmal und Verwendung desselben, Wertdokument und Verfahren zur Prüfung der Echtheit desselben
DE102014011383A1 (de) 2014-08-01 2016-02-04 Giesecke & Devrient Gmbh Sicherheitselement, Wertdokument-Substrat, Sicherheitspapier, Wertdokument und Verfahren zur Herstellung desselben und Trensferband
DE102015014525A1 (de) * 2015-11-11 2017-05-11 Giesecke & Devrient Gmbh Sicherheitspigment basierend auf Kern-Hülle-Teilchen und Verfahren zum Herstellen desselben
DE102015014539A1 (de) * 2015-11-11 2017-05-11 Giesecke & Devrient Gmbh Sicherheitspigment basierend auf Kern-Hülle-Teilchen und Herstellungsverfahren
DE102016008804A1 (de) 2016-07-20 2018-01-25 Giesecke+Devrient Currency Technology Gmbh Sicherheitsmerkmal und Wertdokument

Family Cites Families (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885366A (en) * 1956-06-28 1959-05-05 Du Pont Product comprising a skin of dense, hydrated amorphous silica bound upon a core of another solid material and process of making same
US3081154A (en) * 1959-11-17 1963-03-12 Grace W R & Co Process for preparing fine size silica
US4158074A (en) * 1975-06-19 1979-06-12 Showa Aluminum Kabushiki Kaisha Process for preparing colored aluminum powder
JP2622999B2 (ja) * 1988-01-27 1997-06-25 日本油脂 株式会社 有彩色金属フレーク顔料並びにこの顔料を含有する塗料組成物、インキ組成物、化粧料組成物及びプラスチック成形組成物
US5196229A (en) * 1989-08-21 1993-03-23 Gte Products Corporation Coated phosphor articles
US5008167A (en) * 1989-12-15 1991-04-16 Xerox Corporation Internal metal oxide filled materials for electrophotographic devices
DE4217511A1 (de) * 1992-05-27 1993-12-02 Basf Ag Glanzpigmente auf der Basis von mehrfach beschichteten plättchenförmigen metallischen Substraten
DE4405492A1 (de) * 1994-02-21 1995-08-24 Basf Ag Mehrfach beschichtete metallische Glanzpigmente
EP0668329B1 (fr) * 1994-02-21 1998-07-22 BASF Aktiengesellschaft Pigments brillants à revêtements multiples
DE19538295A1 (de) * 1995-10-14 1997-04-17 Basf Ag Goniochromatische Glanzpigmente mit siliciumhaltiger Beschichtung
JP3350354B2 (ja) * 1996-06-03 2002-11-25 松下電器産業株式会社 モノクロームブラウン管蛍光面形成方法
US6197218B1 (en) * 1997-02-24 2001-03-06 Superior Micropowders Llc Photoluminescent phosphor powders, methods for making phosphor powders and devices incorporating same
US6776835B2 (en) * 1998-08-14 2004-08-17 Merck Patent Gesellschaft Mit Beschrankter Haftung Multilayer pigments based on coated metal platelets
DE69924601T2 (de) * 1998-08-25 2006-03-02 Philips Intellectual Property & Standards Gmbh Verfahren zur beschichtung eines lumineszenten materials
GB9828770D0 (en) * 1998-12-29 1999-02-17 Rue De Int Ltd Security paper
PL205719B1 (pl) * 2000-02-16 2010-05-31 Sicpa Holding Sa Pigment zawierający strukturę interferencyjną , sposoby wytwarzania takiego pigmentu, zastosowanie takiego pigmentu do zastosowań zabezpieczających
US6569529B1 (en) * 2000-10-10 2003-05-27 Flex Product, Inc. Titanium-containing interference pigments and foils with color shifting properties
DE10111116A1 (de) * 2001-03-08 2002-09-19 Giesecke & Devrient Gmbh Wertdokument
US20020160194A1 (en) * 2001-04-27 2002-10-31 Flex Products, Inc. Multi-layered magnetic pigments and foils
US6841238B2 (en) * 2002-04-05 2005-01-11 Flex Products, Inc. Chromatic diffractive pigments and foils
JP2006509088A (ja) * 2002-12-10 2006-03-16 チバ　スペシャルティ　ケミカルズ　ホールディング　インコーポレーテッド アルミニウムをベースとするフレーク状顔料
DE10259246A1 (de) * 2002-12-17 2004-07-01 Merck Patent Gmbh Anorganische sphärische Absorptionspigmente
US7285329B2 (en) * 2004-02-18 2007-10-23 Hitachi Metals, Ltd. Fine composite metal particles and their production method, micro-bodies, and magnetic beads
EP1744904B2 (fr) * 2004-04-30 2019-11-06 Giesecke+Devrient Currency Technology GmbH Materiau en feuille et son procede de fabrication
EP2287011B1 (fr) * 2004-04-30 2017-06-28 Giesecke & Devrient GmbH Elément de sécurité et son procédé de fabrication
DE102004021246A1 (de) * 2004-04-30 2005-11-24 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102004021247A1 (de) * 2004-04-30 2005-11-24 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102004039355A1 (de) * 2004-08-12 2006-02-23 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102004022079A1 (de) * 2004-05-05 2005-11-24 Giesecke & Devrient Gmbh Wertdokument mit Seriennummer
DE102004035979A1 (de) * 2004-07-14 2006-02-02 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102004038542A1 (de) * 2004-08-06 2006-02-23 Giesecke & Devrient Gmbh Datenträger mit Sicherheitselement und Verfahren zu seiner Herstellung
WO2006018171A2 (fr) * 2004-08-12 2006-02-23 Giesecke & Devrient Gmbh Element de securite comprenant un support
DE102005028162A1 (de) * 2005-02-18 2006-12-28 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102005022018A1 (de) * 2005-05-12 2006-11-16 Giesecke & Devrient Gmbh Sicherheitspapier und Verfahren zu seiner Herstellung
DE102005025095A1 (de) * 2005-06-01 2006-12-07 Giesecke & Devrient Gmbh Datenträger und Verfahren zu seiner Herstellung
DE102005032997A1 (de) * 2005-07-14 2007-01-18 Giesecke & Devrient Gmbh Gitterbild und Verfahren zu seiner Herstellung
DE102005061749A1 (de) * 2005-12-21 2007-07-05 Giesecke & Devrient Gmbh Optisch variables Sicherheitselement und Verfahren zu seiner Herstellung
US20070241551A1 (en) * 2006-04-18 2007-10-18 Graff Jacob C Automatic Bookmark
DE102006039305A1 (de) * 2006-07-21 2008-01-24 Giesecke & Devrient Gmbh Sicherheitsfaden mit optisch variablem Sicherheitsmerkmal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110606504A (zh) * 2019-10-17 2019-12-24 武汉工程大学 一种分级核壳SnO2微球及其制备方法和应用
CN110606504B (zh) * 2019-10-17 2022-05-10 武汉工程大学 一种分级核壳SnO2微球及其制备方法和应用

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