EP1809846B1 - Verfahren zur herstellung von sicheren wertvollen dokumenten - Google Patents

Verfahren zur herstellung von sicheren wertvollen dokumenten Download PDF

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Publication number
EP1809846B1
EP1809846B1 EP05809299A EP05809299A EP1809846B1 EP 1809846 B1 EP1809846 B1 EP 1809846B1 EP 05809299 A EP05809299 A EP 05809299A EP 05809299 A EP05809299 A EP 05809299A EP 1809846 B1 EP1809846 B1 EP 1809846B1
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EP
European Patent Office
Prior art keywords
active substance
grouping
radicals
securing
chosen
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.)
Not-in-force
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EP05809299A
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English (en)
French (fr)
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EP1809846A1 (de
Inventor
Hubert Le Bozec
Régis Reau
Olivier Lohio
Olivier Maury
Florian Demaimay
Xavier Borde
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.)
Francois Charles Oberthur Fiduciaire SA
Original Assignee
Francois Charles Oberthur Fiduciaire SA
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Publication of EP1809846A1 publication Critical patent/EP1809846A1/de
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05G—SAFES OR STRONG-ROOMS FOR VALUABLES; BANK PROTECTION DEVICES; SAFETY TRANSACTION PARTITIONS
    • E05G1/00—Safes or strong-rooms for valuables
    • E05G1/14—Safes or strong-rooms for valuables with means for masking or destroying the valuables, e.g. in case of theft
    • 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
    • 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
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/48—Elements suited for physical verification, e.g. by irradiation
    • 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
    • G07D7/06—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 wave or particle radiation
    • G07D7/10—Microwaves
    • 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
    • G07D7/06—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 wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/1205—Testing spectral properties

Definitions

  • the present invention relates to a method for securing valuable documents, in particular banknotes, and more particularly to a method for securing valuable documents contained in a security protection or transport enclosure.
  • a solution to this problem was then to use secure containers whose opening or attempted opening by an unauthorized person or lacking a suitable opening means, key or code type, triggers a complex mechanism installed within said containers resulting in the destruction, deterioration or indelible marking of valuable documents contained within said containers, rendering unusable or legally identifiable said documents.
  • a solution pr-oposed by the company AXYTRANS consists in triggering a pyrotechnic charge housed in the lid of the secure container, the deflagration of said charge causing both the opening of marker or destructive liquid tanks placed inside the container and the partial or total cutting of the set of valuable documents.
  • this solution leads to a deterioration or a deep marking of the banknotes, the result is still insufficient both in terms of the proportion of notes physically reached by the liquid, as the level of the regularity of said deteriorations - or said markings.
  • this solution does not control the intensity, shape and positioning of said deteriorations or said markings.
  • This heterogeneity in the physical modification undergone by each of the notes leaves a doubt as to the origin of the said modifications and, as a result, does not make it possible to reliably identify a ticket stolen from a non-stolen ticket.
  • One of the aims of the invention is therefore to propose a new method for securing valuable documents that does not have the drawbacks of the abovementioned prior art and, in particular, a method of securing valuable documents that makes it possible to achieve in a simple and fast way, while being without risk for the potential users, with an irreversible physical modification of the documents of value, rendering said documents unusable or legally identifiable, said modification being able to be carried out in a complete, homogeneous and controlled way on the set of valuable documents.
  • a method for securing valuable documents comprising the steps of integrating into each document, during its manufacture, at least one active substance irreversibly changing color under the direct effect of revealing means, said color change rendering said documents unusable or legally identifiable, the developer means consisting of external microwave radiation; said method being remarkable in that the external microwave radiation induces an irreversible chemical modification of the active substance by the creation of an extended ⁇ -conjugate system signifying the transition from an unconjugated initial form to a conjugated final form.
  • the chemical modification of the active substance comprises the creation of at least one monoatomic or heteroatomic multiple bond.
  • the chemical modification of the active substance comprises the creation of at least one carbon-carbon double bond.
  • the chemical modification of the active substance comprises the creation of at least one carbon-carbon triple bond.
  • the chemical modification of the active substance is accompanied by the irreversible release of at least one reaction product.
  • the active substance consists of at least one molecule comprising at least one electron donor group by mesomeric and / or inductive effect and at least one mesomeric electron acceptor group. and / or inductive, said electron donor and electron acceptor groups being connected between them by an intermediate group of atoms capable of irreversibly releasing, under the effect of the external microwave radiation, said reaction product, so as to create an extended ⁇ -conjugate system.
  • the interlayable atom group has a chemical formula of the type: -CHX-CHY- in which the XY molecule is the reaction product released by the active substance under the effect of external radiation.
  • the integration of the active substance with valuable documents is carried out by incorporating said active substance into at least one of the constituent elements of said valuable documents.
  • the active substance is incorporated in the basic support of valuable documents, said support being able to be made of paper or plastic.
  • the active substance is incorporated into an ink printed on said valuable documents.
  • the active substance is incorporated in a varnish covering said valuable documents.
  • Such molecules must pass rapidly and irreversibly from an unconjugated form, preferably colorless or weakly colored, to a conjugate form, preferably strongly colored, under the effect of external microwave radiation.
  • the group D is chosen from a polyene, an aromatic group, a heteroaromatic group, which may or may not be substituted by heteroatomic groups, or a heteroatomic group.
  • the heteroatomic group or groups are chosen from NH 2 , NR 1 R 2 , OH, O - , OR 1, SH, S - , SR 1, in which R 1 and R 2 denote alkyl, cycloalkyl or aryl radicals, identical or different.
  • the cycloalkyl radicals are chosen from saturated monocyclic cycloalkyl radicals, such as the cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl or cycloheptyl radicals, or from the unsaturated monocyclic cycloalkyl radicals, such as the cyclobutene and cyclopentene radicals. , cyclohexene.
  • the aromatic group is chosen from aryl radicals monocyclic or polycyclic, such as phenyl radicals substituted or unsubstituted by one or more alkyl radicals, naphthyl, anthryl or phenanthryl radicals.
  • the group A is chosen from an ester, an aldehyde, a nitrile, a nitro, a halogen, a carboxylic acid, barbituric acid, thiobarbituric acid, a polyene, an aromatic group , a substituted heteroaromatic group or not.
  • the aromatic group is chosen from monocyclic or polycyclic radicals, such as phenyl radicals substituted or unsubstituted by one or more alkyl radicals, naphthyl, anthryl or phenanthryl radicals.
  • the heteroaromatic group is chosen from the radical pyridyl, bipyridyl, phenanthrolyl, terpyridinyl or quinolynyl, substituted or not by one or more alkyl or aryl radicals.
  • the aryl radicals are chosen from monocyclic or polycyclic aryl radicals, such as phenyl radicals which may or may not be substituted by one or more alkyl radicals, naphthyl, anthryl or phenanthryl radicals.
  • the X and Y groups are chosen from a hydrogen atom, a halogen, a hydroxyl, thiohydroxy, amino, alkoxy, thioalkoxy, mesylate or tosylate group.
  • the halogen is chosen from the fluorine, chlorine, bromine or iodine atom.
  • the alkyl radicals consist of a linear or branched chain of 1 to 8 carbon atoms, especially a linear chain of 2 to 4 carbon atoms.
  • the active substance has the general formula (1): wherein R1 and R2 are alkyl, cycloalkyl, aryl, the same or different radicals.
  • the active substance has the general formula (2) : wherein R1 and R2 are alkyl, cycloalkyl, aryl radicals, the same or different, and M is a metal salt.
  • R 1 and R 2 are chosen from ethyl or butyl radicals.
  • the metal salt is chosen from ZnCl 2 or ReCO 3 Br.
  • the active substance has the general formula (3):
  • the active substance is thermally stable.
  • the active substance has a decomposition rate of less than or equal to 5% by weight at 223 ° C., said rate being measured by thermogravimetric analysis.
  • the invention also relates to the application of the security method as described above to banknotes.
  • the invention also relates to a valuable document comprising at least one active substance as described above, said document constituting in particular a banknote.
  • a source of microwave radiation present inside said container which exposes said documents.
  • a microwave radiation adapted to produce a physical modification of the active substance, in particular adapted to change the color of said substance.
  • the microwave radiation which can penetrate to the heart of the material, will therefore act in a homogeneous and complete way on all or documents. Otherwise, given its selective action on the active substance incorporated in the documents, the physical modification of the valuable documents can be located and controlled so as to form a substantially identical pattern on all the documents.
  • the active substance will be present in an overprint varnish deposited on the valuable documents to be secured, said substance being initially colorless or weakly colored and strongly staining when exposed to microwave radiation. external.
  • This coloration may in particular stem from the irreversible chemical modification of the molecules constituting said active substance, in particular from the creation of an extended ⁇ -conjugate system.
  • the creation of an extended ⁇ -conjugate system has the effect of modifying the absorption spectrum of said molecules, and, in particular, to move the absorption band of said molecules in the visible range.
  • the Applicant has also demonstrated the fundamental role played by the presence of donor and electron receptor group by mesomeric and / or inductive effect within the molecules constituting the active substance in the reaction mechanism leading to the creation of the ⁇ -system. conjugated during its exposure to external microwave radiation.
  • these groups make it possible to improve the electronic delocalization phenomenon and, therefore, promote the conjugation reaction.
  • the resulting yellow-green mixture is stirred for one hour at low temperature and then overnight at room temperature. After hydrolysis (60 ml of distilled water), the medium turns yellow-orange. Phases are separated, the organic phase dried over MgSO 4 , filtered and the solvent is evaporated. The product is purified by washing with ethanol (100 mL) and then filtered through a sintered glass to obtain a white powder (9.5 g, 65%).
  • an acrylic lacquer solution doped with 1.3% by weight of the active substance formed above is prepared by mixing, in 1 ml of tetrahydrofuran THF, 1.5 g of water-based acrylic lacquer having the reference 803 675 W in the PROTECT® range marketed by SICPA with 20 mg of said active substance.
  • strips 1 cm wide and 5 cm long were cut from a sheet of fiduciary paper formed from cotton fibers.
  • the acrylic varnish solution is deposited on each of the paper strips, by means of a system of threaded cylindrical bar applications allowing the deposition of a 12 micron varnish film, or 24 micron d 'thickness.
  • each of the strips coated with varnish is placed in the cavity -cylindrical of a microwave oven marketed under the brand name Discover® by the American company CEM Corporation and protected in particular in the international patent application.
  • This microwave oven comprises in particular a source of microwave radiation delivering a focused single-mode beam with a power of 300 W, the frequency of the produced beam being between 300 MHz and 30 GHz, and preferably being substantially equal to 2.45 GHz.
  • the microwave oven also includes a waveguide communicating with the source, at least a portion of the waveguide describing a cylindrical arc, and a cylindrical cavity surrounded by the cylindrical portions of the waveguide, a plurality of apertures being formed on the walls of the waveguide so as to communicate the waveguide with the cylindrical cavity.
  • the interest of this type of oven is to focus the microwave beams on a well-defined area of the cylindrical cavity, especially where the samples to be tested are positioned.
  • the irradiation time of each paper strip varies between 1 s and 5 min, and in this preferred embodiment is set substantially at 30 s.
  • a strip of the same paper coated with a film of varnish not doped with the active substance does not show a significant color change when exposed to the same microwave radiation.
  • Figure 1 shows the reflection absorption spectrum respectively of the paper before exposure to microwave radiation (curve 1) and after exposure to microwave radiation (curve 2).
  • the paper Before its irradiation, the paper had a relatively narrow absorption band of between about 200 and 300 nm, that is to say outside the visible range: the paper thus did not have any color.
  • the paper After irradiation, the paper has a broad absorption band between about 370 and 650 nm, in particular centered around 430 nm: the paper thus appears colored.
  • thermogravimetric analysis a decomposition rate of said molecule substantially equal to 5% is measured. weight at 223 ° C: the molecule (3) is thermally stable.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Business, Economics & Management (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Saccharide Compounds (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Paper (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Communication Control (AREA)
  • Peptides Or Proteins (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Claims (35)

  1. Verfahren zur Herstellung von sicheren wertvollen Dokumenten, das Arbeitsschritte beinhaltet, bei denen jedem Dokument bei dessen Herstellung mindestens ein Wirkstoff beigefügt wird, der unter der Wirkung von Mitteln zur Farbentwicklung eine unabänderbare Farbänderung bewirkt, wobei die besagten Dokumente durch diese Farbänderung unbrauchbar oder gesetzlich identifizierbar gemacht werden und die Mittel zur Farbentwicklung aus einer externen Mikrowellenstrahlung bestehen, dadurch gekennzeichnet, dass die externe Mikrowellenstrahlung in dem Wirkstoff eine unabänderbare chemische Veränderung durch Bildung eines erweiterten Pi-konjugierten Systems bewirkt.
  2. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach Anspruch 1, dadurch gekennzeichnet, dass die chemische Veränderung des Wirkstoffs aus der Bildung mindestens einer Mono- oder Heteroatomgruppierung besteht.
  3. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die chemische Veränderung des Wirkstoffs aus der Bildung mindestens einer doppelten Kohlenstoff-Kohlenstoffverbindung besteht.
  4. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach Anspruch 2, dadurch gekennzeichnet, dass die chemische Veränderung des Wirkstoffs aus der Bildung mindestens einer dreifachen Kohlenstoff-Kohlenstoffverbindung besteht.
  5. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass gleichzeitig mit der chemischen Veränderung des Wirkstoffs mindestens ein Reaktionsprodukt unabänderbar freigegeben wird.
  6. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Wirkstoff aus mindestens einem Molekül besteht, das mindestens eine Elektronengebergruppierung durch mesomeren und/oder induktiven Effekt und mindestens eine Elektronennehmergruppierung durch mesomeren und/oder induktiven Effekt besitzt, wobei die Elektronengebergruppierung und die Elektronennehmergruppierung durch eine eingefügte Atomgruppierung miteinander verbunden sind, durch die das besagte Reaktionsprodukt unter der Wirkung der externen Mikrowellenstrahlung unabänderbar freigesetzt wird, so dass ein erweitertes Pi-konjugiertes System gebildet wird.
  7. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die eingefügte Atomgruppierung eine chemische Formel vom Typ

            -CHX-CHY-

    besitzt, in der das Molekül XY das durch den Wirkstoff unter der Wirkung der externen Mikrowellenstrahlung freigesetzte Reaktionsprodukt darstellt.
  8. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Wirkstoff die allgemeine Formel
    Figure imgb0016
     besitzt, in der
    - D eine Elektronengebergruppierung durch mesomeren und/oder induktiven Effekt ist,
    - A eine Elektronennehmergruppierung durch mesomeren und/oder induktiven Effekt ist,
    - X und Y zwei Gruppierungen sind, die unter der Wirkung der externen Mikrowellenstrahlung in Form eines Moleküls XY eliminiert werden können,
    - n eine ganze Zahl ist.
  9. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, die Gruppierung D aus einem Polyen, einer aromatischen Gruppierung, einer heteroaromatischen Gruppierung mit oder ohne Substituierung durch Heteroatomgruppierungen oder einer Heteroatomgruppierung besteht.
  10. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Heteroatomgruppierung(en) wahlweise aus NH2, NR1R2, OH, O-, OR1, SH, S- oder SR1 bestehen, wobei mit R1 und R2 identische oder unterschiedliche Alkyl-, Cycloalkyl- oder Arylradikale bezeichnet sind.
  11. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Cycloalkylradikale wahlweise aus gesättigten monozyklischen Cycloalkylradikalen wie Cyclopropyl-, Cyclobutyl-, Cyclopentyl-, Cyclohexyl- oder Cycloheptylradikalen oder aus ungesättigten monozyklischen Cycloalkylradikalen wie Cyclobutanol-, Cyclopentanol- oder Cyclohexanolradikalen bestehen.
  12. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach Anspruch 9, dadurch gekennzeichnet, dass die aromatische Gruppierung wahlweise aus monozyklischen oder polyzyklischen Arylradikalen wie Phenylradikalen mit oder ohne Substitution durch ein oder mehrere Alkyl-, Naphtyl-, Anthryl- oder Phenanthrylradikale besteht.
  13. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass die heteroaromatische Gruppierung wahlweise aus Thienyl, Pyrrolyl, Furanyl, Azathienyl mit oder ohne Substitution durch ein oder mehrere Alkylradikale besteht.
  14. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach Anspruch 8, dadurch gekennzeichnet, dass die Gruppierung A wahlweise aus einer Ester-, Aldehyd-, Nitril-, Nitro-, Halogengruppierung, aus Carboxylsäure, Barbitursäure, Thiobarbitursäure, aus einer Polyen-, einer aromatischen oder einer heteroaromatischen Gruppierung mit oder ohne Substitution besteht.
  15. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die aromatische Gruppierung wahlweise aus monozyklischen oder polyzyklischen Radikalen wie Phenylradikalen mit oder ohne Substitution durch ein oder mehrere Alkylradikale bzw. aus Naphtyl-, Anthryl- oder Phenanthrylradikalen besteht.
  16. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach Anspruch 14, dadurch gekennzeichnet, dass die heteroaromatische Gruppierung wahlweise aus Pyridyl-, Bipyridil-, Phenanthrolyl-, Terpyridinyl- oder Quinoleinylradikalen mit oder ohne Substitution durch ein oder mehrere Alkyl- oder Arylradikale besteht.
  17. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach Anspruch 10 oder 16, dadurch gekennzeichnet, dass die Arylradikale wahlweise aus monozyklischen oder polyzyklischen Arylradikalen wie Phenylradikale mit oder ohne Substitution durch ein oder mehrere Alkylradikale bew. aus Naphtyl-, Anthryl- oder Phenanthrylradikalen bestehen.
  18. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach Anspruch 8, dadurch gekennzeichnet, dass die Gruppierungen X und Y wahlweise aus einem Wasserstoffatom, einem Halogen, einer Hydroxy-, Thiohydroxy-, Amino-, Alkoxy-, Thioalkoxy-, Mesylat- oder Tosylatgruppierung bestehen.
  19. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach Anspruch 14 oder 18, dadurch gekennzeichnet, dass das Halogen wahlweise aus einem Fluor-, Chlor-, Brom- oder Iodatom besteht.
  20. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach einem der Absprüche 10 bis 17, dadurch gekennzeichnet, dass die Alkylradikale aus einer linearen oder verzweigten Kette mit 1 bis 8 Kohlenstoffatomen, insbesondere aus einer linearen Kette mit 2 oder 4 Kohlenstoffatomen bestehen.
  21. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach Anspruch 8, dadurch gekennzeichnet, dass der Wirkstoff die allgemeine Formel (1)
    Figure imgb0017
     besitzt, in der R1 und R2 identische oder unterschiedliche Alkyl-, Cycloalkyl- oder Arylradikale sind.
  22. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach Anspruch 8, dadurch gekennzeichnet, dass der Wirkstoff die allgemeine Formel (2)
    Figure imgb0018
     besitzt, in der R1 und R2 identische oder unterschiedliche Alkyl-, Cycloalkyl- oder Arylradikale sind und M ein Metallsalz ist.
  23. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach Anspruch 21 oder 22, dadurch gekennzeichnet, dass R1 und R2 wahlweise Ethyl- oder Butylradikale sind.
  24. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Wirkstoff die allgemeine Formel (3)
    Figure imgb0019
     besitzt.
  25. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach Anspruch 22 oder 23, dadurch gekennzeichnet, dass das Metallsalz wahlweise aus ZnCl2 oder ReCO3Br besteht.
  26. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass la Wirkstoff thermisch stabil ist.
  27. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Wirkstoff einen Zersetzungsgrad kleiner oder gleich 5 Gewichtprozent bei 223°C besitzt, wobei der Zersetzungsgrad durch thermogravimetrische Analyse gemessen wird.
  28. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Beifügung des Wirkstoffs zu den wertvollen Dokumenten durch die Beimengung des Wirkstoffs zu mindestens einem der Bestandteile des wertvollen Dokuments erfolgt.
  29. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Wirkstoff dem Grundmaterial des wertvollen Dokuments beigemengt wird, wobei das Grundmaterial aus Papier oder Kunststoff bestehen kann.
  30. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach Anspruch 28 oder 25, dadurch gekennzeichnet, dass der Wirkstoff einer Druckfarbe der wertvollen Dokumente beigemengt wird.
  31. Verfahren zur Herstellung von sicheren wertvollen Dokumenten nach einem der Ansprüche 28 bis 30, dadurch gekennzeichnet, dass der Wirkstoff einem Lack beigemengt wird, mit dem die wertvollen Dokumente überzogen werden.
  32. Anwendung des Verfahrens zur Herstellung von sicheren wertvollen Dokumenten nach einem der Ansprüche 1 bis 31 bei Banknoten.
  33. Wertvolles Dokument, das mindestens einen Wirkstoff besitzt, durch den eine unabänderbare Farbänderung unter der direkten Einwirkung von Mitteln zur Farbentwicklung in Form einer externen Mikrowellenstrahlung bewirkt wird, dadurch gekennzeichnet, dass der Wirkstoff aus mindestens einem Molekül besteht, das mindestens eine Elektronengebergruppierung durch mesomeren und/oder induktiven Effekt und mindestens eine Elektronennehmergruppierung durch mesomeren und/oder induktiven Effekt besitzt, wobei die Elektronengebergruppierung und die Elektronennehmergruppierung durch eine eingefügte Atomgruppierung miteinander verbunden sind, durch die unter der Wirkung der externen Mikrowellenstrahlung das besagte Reaktionsprodukt unabänderbar freigesetzt wird, so dass ein erweitertes Pi-konjugiertes System gebildet wird.
  34. Wertvolles Dokument nach Anspruch 33, dadurch gekennzeichnet, dass der Wirkstoff die allgemeine Formel
    Figure imgb0020
     besitzt, in der
    - D eine Elektronengebergruppierung durch mesomeren und/oder induktiven Effekt ist,
    - A eine Elektronennehmergruppierung durch mesomeren und/oder induktiven Effekt ist,
    - X und Y zwei Gruppierungen sind, die unter der Wirkung der externen Mikrowellenstrahlung in Form eines Moleküls XY eliminiert werden können,
    - n eine ganze Zahl ist.
  35. Wertvolles Dokument nach Anspruch 33, dadurch gekennzeichnet, dass es aus einer Banknote besteht.
EP05809299A 2004-10-20 2005-10-19 Verfahren zur herstellung von sicheren wertvollen dokumenten Not-in-force EP1809846B1 (de)

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