WO2021197663A1 - Substrat de document de valeur et procédé de désinfection - Google Patents

Substrat de document de valeur et procédé de désinfection Download PDF

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Publication number
WO2021197663A1
WO2021197663A1 PCT/EP2021/000030 EP2021000030W WO2021197663A1 WO 2021197663 A1 WO2021197663 A1 WO 2021197663A1 EP 2021000030 W EP2021000030 W EP 2021000030W WO 2021197663 A1 WO2021197663 A1 WO 2021197663A1
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WO
WIPO (PCT)
Prior art keywords
substrate
value document
value
photosensitizer
singlet oxygen
Prior art date
Application number
PCT/EP2021/000030
Other languages
German (de)
English (en)
Inventor
Christoph Mengel
Geza MURVAI
Bernhard Wiedner
Patrick Renner
Peter Schiffmann
Original Assignee
Giesecke+Devrient Currency Technology 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 Currency Technology Gmbh filed Critical Giesecke+Devrient Currency Technology Gmbh
Priority to EP21716262.7A priority Critical patent/EP4126558A1/fr
Publication of WO2021197663A1 publication Critical patent/WO2021197663A1/fr

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Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N35/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical
    • A01N35/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical containing aliphatically bound aldehyde or keto groups, or thio analogues thereof; Derivatives thereof, e.g. acetals
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N35/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical
    • A01N35/06—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical containing keto or thioketo groups as part of a ring, e.g. cyclohexanone, quinone; Derivatives thereof, e.g. ketals
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/088—Radiation using a photocatalyst or photosensitiser
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—Ultraviolet radiation
    • 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
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • 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
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/387—Special inks absorbing or reflecting ultraviolet light
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • 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
    • D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
    • 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
    • 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating

Definitions

  • the invention relates to a value document substrate, in particular a fit document of value such as a banknote, or a not yet fit for circulation, in particular unprinted, security paper for generating a document of value such as a bank note.
  • the invention also relates to a method for disinfecting the value document substrate.
  • the printing process usually takes place in several printing steps, whereby a variety of successive printing and finishing processes can be used.
  • One of the first steps here is usually a single-color or multi-color background printing using the offset and / or letterset process.
  • the printing equipment used for this can vary greatly and is dependent on the following parameters:
  • paper substrate e.g. substrates based on cotton fibers; substrates based on mixed fibers, mixed fibers being in particular cotton, flax, linen, cellulose and synthetic fibers; substrates based on plastic films; impregnated and precoated substrates);
  • substrates to be printed which have an inhomogeneous structure (e.g. paper substrates provided with a film element; partially preprinted substrates; substrates with flat elements partially applied on the basis of screen printing);
  • an inhomogeneous structure e.g. paper substrates provided with a film element; partially preprinted substrates; substrates with flat elements partially applied on the basis of screen printing;
  • the printing equipment of the subsequent printing steps can be adapted, which is associated with a lot of effort and high costs.
  • the drying of a printed substrate can also be accelerated by adding metal-containing drying agents.
  • Oxidative drying printing inks i.e. printing inks that do not belong to the UV inks or UV varnishes
  • a drying agent or siccative Drying agents are in particular organic salts of certain metals such as cobalt (e.g. cobalt octoate, cobalt naphthenate), manganese, calcium (e.g. calcium octoate), zirconium or cerium.
  • Metal-containing drying agents only develop their effect in the presence of oxygen. Provided that storage and transport are largely carried out in the absence of air, a drying agent can be incorporated into the paint at the factory.
  • the disadvantage of these drying agents is that the use of (heavy) metal compounds is problematic for reasons of work-related safety and health hazards. A low use concentration would therefore be desirable, but this leads to long drying times.
  • the drying of a printed substrate can also be accelerated by adding peroxide-containing substances such as inorganic or organic peroxides. When they disintegrate, these cause radical harm free of substances and thus accelerate the oxidative drying of the paint layer. This also works in places where there is a lack of air or oxygen, consequently also in the case of substrates that do not turn away and in high or large-area stacks of valuable documents.
  • peroxide-containing substances can only be added to the ink relatively shortly before printing, because the ink cannot be stored for a longer period of time due to the chemical reaction that begins when the peroxide is added.
  • the drying of a printed substrate can also be accelerated by using UV-drying background colors or hybrid UV systems instead of oxidative drying systems.
  • Such inks are, however, significantly more expensive, often have sensitizing properties and, under certain circumstances, have poor overprintability. In addition, they only have a limited shelf life as a finished paint.
  • innovative hybrid ink formulations that contain both conventional, oxidatively drying ink components and UV-curing ink components.
  • the present invention is based on the object of providing a value document substrate such as a security paper or a value document which, compared to the value document substrates known in the prior art, has improved properties in terms of its production and subsequent circulation.
  • the present invention is based in particular on the object of providing a document of value substrate such as for example to provide a security paper or a document of value which has an advantageous drying ability during printing.
  • document of value substrate with two opposing main surfaces, at least one of the two main surfaces having a photosensitizer for generating singlet oxygen.
  • document of value substrate according to clause 1 wherein both main surfaces of the document of value substrate each have a photosensitizer for generating singlet oxygen.
  • value document substrate according to one of clauses 1, 2, 3, 6 or 7, wherein the value document substrate is a value document, in particular a bank note or an identification document.
  • value document substrate according to one of clauses 1 to 8, the value document substrate being adapted so that the ink drying is accelerated after printing when exposed to UV radiation as a result of the photosensitizer to generate singlet oxygen.
  • value document substrate according to one of clauses 1 to 9, wherein the value document substrate is adapted so that the photosensitizer for generating singlet oxygen when exposed to UV radiation has an antimicrobial, in particular antibacterial and / or antiviral and / or antifungal effect unfolded, wherein the photosensitizer is preferably incorporated into the substrate surface, particularly preferably in an impregnation, in a precoating, in an ink acceptance layer or in a protective lacquer.
  • the photosensitizer for generating singlet oxygen being a 10H-benzo [g] pteridine-2,4-dione derivative (see, for example, WO 2012/175730 A1, WO 2012 / 175706A1 and WO 2012/175729 A1), an 1H-phenalen-1-one derivative (see e.g. WO 2012/113860 A2), a perinaphthenone dye (see e.g. WO 2012 / 113860A2) or a phenalen-1-one derivative (see, for example, WO 2018/167264 A1).
  • a 10H-benzo [g] pteridine-2,4-dione derivative see, for example, WO 2012/175730 A1, WO 2012 / 175706A1 and WO 2012/175729 A1
  • an 1H-phenalen-1-one derivative see e.g. WO 2012/113860 A2
  • a perinaphthenone dye see e.g
  • document of value substrate according to one of clauses 1 to 12, wherein the substrate is a paper substrate, a polymer substrate or a hybrid substrate, wherein in the case of the hybrid substrate in particular a film composite substrate with a core based on paper and outer layers on the Based on polymers or foils (in particular in connection with a pre- existing ink acceptance layer) or a composite substrate with a core made of a plastic material and outer layers based on paper.
  • a method for disinfecting a value document substrate comprising the step of providing a value document substrate according to one of clauses 1 to 13 and the step of subjecting the value document substrate to UV radiation so that the photosensitizer can generate singlet oxygen during irradiation with UV radiation an antimicrobial, in particular antibacterial and / or antiviral and / or antimycotic, effect unfolds.
  • Oxygen has two different excited states, both of which have a significantly higher energy than the ground state. In both states, the spins of the electrons are antiparal, contrary to Hund's rule.
  • the more stable excited oxygen is also called singlet oxygen OO2) after the quantum mechanical term for this state.
  • the two singlet states differ in whether the two electrons are in one (term symbol: a A g ) or both n * orbitals (term symbol: a Z g ).
  • the 1 Z g state is energetically less favorable and changes very quickly to the 1 A g state.
  • the 1 Z g state is diamagnetic, the energetically more stable one !
  • the A g state shows due to the existing orbital moment (the quantum number corresponding to the projection of the orbital angular momentum onto the core-core connecting axis - symbolized by S, P, D etc. - has the value ⁇ 2 in the! A g state)
  • Singlet oxygen can be formed in various ways: both photochemically from triplet oxygen and chemically from other oxygen compounds.
  • a direct extraction from triplet oxygen by irradiation with electromagnetic radiation (eg light) is, however, excluded for quantum mechanical reasons, in the form of the selection rules for the emission or absorption of electromagnetic radiation.
  • electromagnetic radiation eg light
  • This form of oxygen is a powerful and selective oxidizing agent and is widely used in organic chemistry. In contrast to normal oxygen, it reacts with 1,3-dienes in a [4 + 2] cycloaddition to form peroxides. Singlet oxygen reacts with alkenes and alkynes in a [2 + 2] cycloaddition.
  • the present invention is based on the knowledge that singlet oxygen is able to remove unsaturated double bonds, as they are in conventional len binders for background colors or intaglio printing inks can be used to network via an alpha-H abstraction. If a printing ink suitable for printing a (paper) substrate is mixed with photosensitizer and exposed to UV radiation immediately after printing, the drying of the ink is accelerated.
  • an antimicrobial, in particular antibacterial and / or antiviral and / or antimycotic finish of a document of value such as a bank note is an antimicrobial, in particular antibacterial and / or antiviral and / or antimycotic finish of a document of value such as a bank note.
  • Antimicrobial, for example antimycotic, coatings for surfaces are known in the prior art.
  • an antimicrobial, for example antimycotic and / or antiviral and / or antibacterial, coating of a document of value substrate on the basis of a photo-induced generation of singlet oxygen by a photosensitizer is provided.
  • singlet oxygen When exposed to (UV) light, singlet oxygen is released which, due to its reactivity, is able to kill bacteria, viruses and / or fungi in the immediate vicinity. Due to the high diffusibility of oxygen, it is not necessary that the photosensitizer is applied in close proximity to the bacteria, viruses and / or fungi, but the photosensitizer also acts at a distance of approx. 5 mm.
  • a large area of a document of value such as a bank note can be given an antimicrobial, in particular antibacterial and / or antiviral and / or antimicotic finish. Furthermore, a subsequent overpainting can optionally take place, because singlet oxygen can also diffuse through a lacquer layer a few micrometers thick.
  • the value document substrate according to the invention for example a security paper or a bank note, has a flat substrate which is at least partially provided with an antimicrobial coating containing the photosensitizer for generating singlet oxygen.
  • the antimicrobial coating extends the service life of documents of value that are produced with the security paper according to the invention and reduces the risk of illness in people through the transmission of pathogenic microorganisms when they come into contact with documents of value of this type.
  • Antimicrobial in the context of the present invention means that there is an activity against microorganisms, the effect ideally being a killing of the microorganisms, but also being able to consist in an inhibition of the growth and multiplication of the microorganisms.
  • antiimicrobial means in particular “antiviral” and / or “antibacterial” and / or “antimycotic”.
  • Microorganisms in the context of the invention are in particular bacteria, fungi, such as molds and yeasts, and viruses, with im
  • the focus of the present invention are the potentially pathogenic microorganisms.
  • agents for combating microorganisms i.e. "antimicrobial agents” in the context of the invention therefore include in particular antibacterial, antifungal and antiviral agents, their action being both biocidal (for example bactericidal) and biostatic (for example bacteriostatic).
  • the antimicrobial coating containing the photosensitizer for generating singlet oxygen can be single-layer or multilayer.
  • the antimicrobial coating can, for example, be formed in two layers, whereby it is primarily the upper layer, ie the outer layer, which contains the photosensitizer for generating singlet oxygen, while the lower layer, ie the layer between the substrate and the upper layer, primarily establishes contact with the substrate.
  • the photosensitizer for generating singlet oxygen can furthermore be a component of a (pre) coating or an ink acceptance layer of the document of value substrate.
  • the coating or primer layer containing the photosensitizer for generating singlet oxygen can in particular be formed by a physically drying lacquer layer. “Physically drying” means that drying takes place by evaporation and / or absorption of the solvents or dispersants into the substrate.
  • suitable coatings is known to the person skilled in the art, see, for example, EP 2634309 A1 and WO 2004/072378 A1.
  • Water-based dispersion paints are particularly preferred.
  • suitable primer compositions are compositions based on acrylates, Polyester acrylates, urethane acrylates, polyester polyurethanes and acrylic styrene polyurethanes. Water-based dispersions, in particular water-based dispersions of aliphatic components, are particularly preferred.
  • compositions can contain the usual auxiliaries.
  • auxiliaries are, for example, coalescing agents, leveling agents, wetting agents, defoaming agents, viscosity modifiers, dispersing aids and diluents.
  • Feature substances that are preferably not visually recognizable, such as, for example, luminescent substances, can also be contained in the compositions.
  • the photosensitizer contained in the respective coating or ink layer e.g. a background print or intaglio printing
  • the photosensitizer can be used, for example, in an amount of 0.05% by weight to 0.20% by weight of the composition (wet) which forms the respective layer.
  • the photosensitizer is excited by means of a UV LED lamp instead of a mercury vapor lamp, the beneficial effects are achieved with a low use of energy.
  • a 1,7-diaryl-1,6-heptadiene-3,5-dione derivative is preferred as the photosensitizer.
  • Suitable 1,7-diaryl-1,6-heptadiene-3,5-dione derivatives and their preparation are described in WO 2017/032892 A1.
  • Suitable photosensitizers are described below, see also WO 2017/032892 A1: l, 7-diaryl-l, 6-heptadiene-3,5-dione derivative of the formula (100): and / or at least one l, 7-diaryl-l, 6-heptadiene-3,5-dione derivative of the formula (101): or a salt and / or ester and / or complex thereof, where Q 3 , Q 3a , Q 4 and Q 4a are each independently a substituted or unsubstituted monocyclic or polycyclic, aromatic radical or a substituted or unsubstituted monocyclic or polycyclic, heteroaromatic Radical where K is hydrogen or a cation, and where M z + is a cation of a metal, where z is the formal oxidation number of the metal M and z is an integer from 1 to 7, preferably from 2 to 5, and whereby (Al) at least one of the radicals Q
  • the photosensitizer for generating singlet oxygen can be a 10H-benzo [g] pteridine-2,4-dione derivative (see in particular WO 2012/175730 A1, WO 2012/175706 A1 and WO 2012/175729 A1 ), an 1H-phenalen-1-one derivative (see in particular WO 2012/113860 A2), a perinaphthenone dye (see in particular WO2012 / 113860 A2) or a phenalen-1-one derivative (see in particular WO 2018/167264 Al).
  • a 10H-benzo [g] pteridine-2,4-dione derivative see in particular WO 2012/175730 A1, WO 2012/175706 A1 and WO 2012/175729 A1
  • an 1H-phenalen-1-one derivative see in particular WO 2012/113860 A2
  • a perinaphthenone dye see in particular WO2012 / 113860 A2
  • the photosensitizer Be is part of a (in particular conventionally or physically drying) background paint.
  • a background color in particular conventionally or physically drying
  • the photosensitizer is part of a (in particular conventionally or physically drying) intaglio printing ink.
  • a (paper) substrate with such a intaglio printing ink, followed by exposure to UV radiation, results in an advantageous, accelerated drying of the printed substrate.
  • the respective printed substrate not only be on the with fresh printing ink applied substrate side, but also on the opposite side of the substrate through the substrate is exposed to UV radiation. Accordingly, the exposure to UV radiation takes place preferably on both sides of the substrate.
  • Suitable substrates are in particular paper substrates, polymer substrates and so-called hybrid substrates, which are to be understood as meaning film composite substrates which either have a core based on paper and outer layers based on polymers or else a core made of a plastic material and outer layers based on paper. It is preferred to use substrates based on cotton fibers, which may optionally contain mixed fibers and / or synthetic fibers. In addition, paper, or more precisely a paper-like substrate, can in a special case also consist exclusively of synthetic fibers.
  • the substrate can have certain coatings, impregnations or also imprints and / or security elements or film elements.
  • ink acceptance layer In the case of a paper substrate, ink acceptance layers are generally unnecessary, but the paper substrate can be coated in whole or in part in order to provide it with certain properties, for example luminescent properties due to applied luminescent substances. Ink-accepting layers are usually based on fillers, such as titanium dioxide, aluminum oxide or silicon dioxide pigments, incorporated in a suitable binder.
  • the step of treating the printed value document substrate with UV radiation is expediently carried out by using UV drying systems, which can be based in particular on mercury UV medium pressure lamps or iron or gallium-doped mercury UV medium pressure lamps.
  • the emitter power per lamp is in the range from 120 W / cm to 250 W / cm, preferably 180 W / cm.
  • a suitable radiator system are, for example, the BLK-5 or BLK-2 units offered by IST METZ GmbH.
  • the method is expediently carried out at a printing speed of 8,000 to 12,000 sheets / h, in particular 10,000 sheets / h, and an individual radiation dose rate setting within a range of 4 mj / cm 2 up to 100 mj / cm 2 .
  • the step of drying the printed value document substrate treated with UV radiation takes place at room temperature or at elevated temperatures.
  • temperature is understood to mean a temperature of 20 ° C.
  • the drying at an elevated temperature can take place, in particular, at a temperature in a range from 35.degree. C. to 40.degree.
  • the step of drying the value documents in the form of a value document stack In order to avoid the shrinkage of the value document substrate, it is preferred to carry out the step of drying the value documents in the form of a value document stack.
  • the value document stack can in particular have 200 to 10,000 printed sheets, preferably 5,000 to 7,000 printed sheets. A stack of documents of value with approximately 6000 printed sheets is particularly preferred for drying. Furthermore, it is preferred that the stack core temperature does not exceed a temperature of 40 ° C.
  • the drying of the documents of value in the form of a stack of documents of value is preferably carried out at room temperature.
  • the coating in particular the printing ink or the varnish, contain wavelength-sensitive photosensitizers that respond only to the wavelength of the UV radiator in the printing machine in order to prevent the oxidative drying of the oxidatively drying coating, in particular printing inks or varnishes (so-called oil printing varnishes) to accelerate.
  • wavelength-sensitive photosensitizers can preferably be included, which are only matched to the wavelength and / or energy of the UV radiator for disinfecting the documents of value, in particular banknotes.
  • 1 shows a value document substrate according to the invention, in the present case a security paper suitable for the production of a bank note, according to a first exemplary embodiment
  • 2 shows a value document substrate according to the invention, in the present case a bank note, according to a second exemplary embodiment
  • FIG. 3 shows a value document substrate according to the invention, in the present case a bank note, according to a third exemplary embodiment.
  • FIG. 1 shows a value document substrate 1 according to the invention, in the present case a security paper suitable for the production of a bank note, according to a first exemplary embodiment in a cross-sectional view.
  • the value document substrate 1 is based on a paper substrate 2, which has a coating 3 or 4, namely a lacquer, which has a special photosensitizer for generating singlet oxygen, on both its upper and lower main surfaces.
  • a full-area paper substrate 2 is provided and the antimicrobial coating is applied to it.
  • layer applied by first in a first step as a lower coating layer a physically drying layer is applied to the substrate in order to establish contact with the underlying substrate and close its pores, and then in a second step as an upper coating layer a photosensitizer for Er generation of singlet oxygen having lacquer layer is applied.
  • the application can take place by customary printing processes, for example by flexographic printing.
  • the lower coating layer is only optional, i.e. not absolutely necessary for carrying out the invention.
  • the security paper obtained showed in the course of exposure to UV radiation during the subsequent printing with conventional background color and with conventional intaglio printing ink as a result of the presence of the photosensitizer to generate singlet oxygen, a greatly accelerated ink drying.
  • a simultaneous printing machine suitable for printing with conventionally drying printing inks with a retrofitted UV drying system from IST Metz ("BLK-5", two lamps per side with a lamp power of 180 W / cm each) was used.
  • FIG. 2 shows a value document substrate 5 according to the invention, in the present case a bank note, according to a second exemplary embodiment in FIG Cross-sectional view.
  • the banknote 5 is based on a paper substrate 6 which is provided on both its upper and its lower main surface with a partial background print 7 in the form of a pattern, generated by printing technology.
  • the background color is based on a conventional, physically drying background color, which has a special photosensitizer as a further component to generate singlet oxygen.
  • the resulting banknote 5 showed in the course of exposure to UV radiation during the drying of the background color and during the subsequent printing with conventional intaglio printing ink in order to produce a pattern 8 in intaglio printing, due to the presence of the Photosensi bilizer to generate singlet oxygen in the Background printing layer 7 greatly accelerated ink drying.
  • FIG. 3 shows a value document substrate 9 according to the invention, in the present case a bank note, according to a second exemplary embodiment in a cross-sectional view.
  • the bank note 9 is based on a paper substrate 10, which is provided with a partial background print 11 in the form of a pattern, produced by printing technology, on both its upper and its lower main surface.
  • the background color is based on a conventional, physically drying background color.
  • the banknote 9 was provided with an intaglio layer 12 by means of intaglio printing.
  • the intaglio printing ink is based on a conventional, physically drying intaglio printing ink, which has as a further component a special photosensitizer for the generation of singlet oxygen.
  • a 1,7-diaryl-1,6-heptadiene-3,5-dione derivative which is described in WO 2017/032892 A1 (see in particular the structures (40) to (63), (68 ), (69a), (69b) and (70) in claim 14 of WO 2017/032892 A1).
  • the banknote 9 obtained showed, in the course of exposure to UV radiation during the drying of the intaglio printing layer 12, as a result of the presence of the photosensitizer for generating singlet oxygen, a greatly accelerated ink drying.
  • a simultaneous printing machine suitable for printing with conventionally drying printing inks with a retrofitted UV drying system from IST Metz ("BLK-5", two lamps per side with a lamp power of 180 W / cm each) was used.

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Abstract

L'invention concerne un substrat de document de valeur ayant deux surfaces principales opposées, au moins l'une des deux surfaces principales étant doté d'un agent photosensibilisant pour générer de l'oxygène singulet.
PCT/EP2021/000030 2020-04-03 2021-03-25 Substrat de document de valeur et procédé de désinfection WO2021197663A1 (fr)

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DE102020002163 2020-04-03

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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004028825A2 (fr) 2002-09-19 2004-04-08 Giesecke & Devrient Gmbh Papier de securite
WO2004072378A1 (fr) 2003-02-11 2004-08-26 Giesecke & Devrient Gmbh Papier de securite et procede de production associe
WO2010146065A1 (fr) * 2009-06-16 2010-12-23 Giesecke & Devrient Gmbh Billet de banque composite à films
WO2012113860A2 (fr) 2011-02-24 2012-08-30 Trioptotec Gmbh Dérivés de phénalène-1-one, leur procédé de production et leur utilisation
WO2012175730A1 (fr) 2011-06-22 2012-12-27 TriOpto Tec GmbH Dérivés de 10h-benzo[g]ptéridine-2,4-dione, procédé de production et d'utilisation desdits dérivés
WO2012175706A1 (fr) 2011-06-22 2012-12-27 TriOpto Tec GmbH Utilisation de dérivés de 10h-benzo[g]ptéridine-2,4-dione
WO2012175729A1 (fr) 2011-06-22 2012-12-27 TriOpto Tec GmbH Dérivés de 10h-benzo[g]ptéridine-2,4-dione, procédé de production et d'utilisation desdits dérivés
EP2634309A1 (fr) 2012-03-01 2013-09-04 Giesecke & Devrient GmbH Papier de sécurité
WO2013178325A2 (fr) 2012-05-29 2013-12-05 Giesecke & Devrient Gmbh Procédé de fabrication d'un document de valeur
WO2014046692A1 (fr) * 2012-09-24 2014-03-27 Spectra Systems Corporation Utilisation de matière photocatalytique pour des billets de banque autonettoyants
WO2017032892A1 (fr) 2015-08-26 2017-03-02 Universitätsklinikum Regensburg Dérivés de 1,7-diaryl-1,6-heptadiène-3,5-dione, méthodes de production et utilisation desdits dérivés
WO2018167264A1 (fr) 2017-03-17 2018-09-20 Trioptotec Gmbh Composition de photosensibilisateur contenant de la phénalèn-1-one, composé de phénalèn-1-one et utilisation de cette composition

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004028825A2 (fr) 2002-09-19 2004-04-08 Giesecke & Devrient Gmbh Papier de securite
WO2004072378A1 (fr) 2003-02-11 2004-08-26 Giesecke & Devrient Gmbh Papier de securite et procede de production associe
WO2010146065A1 (fr) * 2009-06-16 2010-12-23 Giesecke & Devrient Gmbh Billet de banque composite à films
WO2012113860A2 (fr) 2011-02-24 2012-08-30 Trioptotec Gmbh Dérivés de phénalène-1-one, leur procédé de production et leur utilisation
WO2012175730A1 (fr) 2011-06-22 2012-12-27 TriOpto Tec GmbH Dérivés de 10h-benzo[g]ptéridine-2,4-dione, procédé de production et d'utilisation desdits dérivés
WO2012175706A1 (fr) 2011-06-22 2012-12-27 TriOpto Tec GmbH Utilisation de dérivés de 10h-benzo[g]ptéridine-2,4-dione
WO2012175729A1 (fr) 2011-06-22 2012-12-27 TriOpto Tec GmbH Dérivés de 10h-benzo[g]ptéridine-2,4-dione, procédé de production et d'utilisation desdits dérivés
EP2634309A1 (fr) 2012-03-01 2013-09-04 Giesecke & Devrient GmbH Papier de sécurité
WO2013178325A2 (fr) 2012-05-29 2013-12-05 Giesecke & Devrient Gmbh Procédé de fabrication d'un document de valeur
WO2014046692A1 (fr) * 2012-09-24 2014-03-27 Spectra Systems Corporation Utilisation de matière photocatalytique pour des billets de banque autonettoyants
WO2017032892A1 (fr) 2015-08-26 2017-03-02 Universitätsklinikum Regensburg Dérivés de 1,7-diaryl-1,6-heptadiène-3,5-dione, méthodes de production et utilisation desdits dérivés
WO2018167264A1 (fr) 2017-03-17 2018-09-20 Trioptotec Gmbh Composition de photosensibilisateur contenant de la phénalèn-1-one, composé de phénalèn-1-one et utilisation de cette composition

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