WO2002033010A1 - Pigment für sicherheitsanwendungen - Google Patents
Pigment für sicherheitsanwendungen Download PDFInfo
- Publication number
- WO2002033010A1 WO2002033010A1 PCT/EP2001/010764 EP0110764W WO0233010A1 WO 2002033010 A1 WO2002033010 A1 WO 2002033010A1 EP 0110764 W EP0110764 W EP 0110764W WO 0233010 A1 WO0233010 A1 WO 0233010A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- refractive index
- metal oxide
- oxide
- interference pigment
- pigment according
- Prior art date
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
- C09C1/0024—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating high and low refractive indices, wherein the first coating layer on the core surface has the high refractive index
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/36—Pearl essence, e.g. coatings containing platelet-like pigments for pearl lustre
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/02—Amorphous compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
- C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
- C01P2004/84—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases one phase coated with the other
- C01P2004/88—Thick layer coatings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
- C09C2200/10—Interference pigments characterized by the core material
- C09C2200/1004—Interference pigments characterized by the core material the core comprising at least one inorganic oxide, e.g. Al2O3, TiO2 or SiO2
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
- C09C2200/10—Interference pigments characterized by the core material
- C09C2200/102—Interference pigments characterized by the core material the core consisting of glass or silicate material like mica or clays, e.g. kaolin
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
- C09C2200/30—Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
- C09C2200/301—Thickness of the core
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
- C09C2200/30—Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
- C09C2200/302—Thickness of a layer with high refractive material
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
- C09C2200/30—Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
- C09C2200/303—Thickness of a layer with low refractive material
-
- 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
- C09C2220/00—Methods of preparing the interference pigments
- C09C2220/10—Wet methods, e.g. co-precipitation
- C09C2220/106—Wet methods, e.g. co-precipitation comprising only a drying or calcination step of the finally coated pigment
Definitions
- the present invention relates to an interference pigment, in particular for the production of tamper-proof security applications, based on paper, plastic or other substrates than
- Gloss or effect pigments are used in many areas of technology, for example in automotive paints, in decorative coatings, in plastic coloring, in paints, printing, especially security printing inks, and in cosmetics.
- Composition of the pigment platelets produce interference, reflection and absorption phenomena, angle-dependent color and brightness impressions.
- Markings made with the effect pigments and the absence of these markings or their change for example in a color copy (disappearance of color flops and gloss effects), can be reliably recognized with the naked eye without the aid of tools and thus make it easy to distinguish the original from the copy.
- Pigments that change their interference color due to their visual structure depending on the viewing angle are known.
- No. 4,434,010 describes optically variable layer systems which have a central opaque aluminum layer which is alternately coated on both sides with a low-refractive index dielectric layer and a semitransparent metal layer.
- These pigments are produced by evaporating an endless belt with different materials in a high vacuum, detaching the layer material obtained and comminuting the particles obtained. They are very expensive due to the complex production.
- the pigments have the disadvantage that the central aluminum layer emerges openly at the breaking edges and is not covered by the subsequent layers. As a result, the pigments have reduced weather stability.
- the object of the invention is to provide a pigment for security applications which has additional, non-copiable properties compared to known pigments and can be produced by a simple process.
- a multilayer interference pigment consisting of a transparent carrier material which is coated with alternating layers of colorless non-absorbent metal oxides with high and low refractive indices, the difference in refractive indices being at least 0.1, obtainable by alternately coating the transparent carrier material with: metal oxides in the wet process by hydrolysis of the corresponding water-soluble inorganic metal compounds, separation, drying and optionally calcining the pigment obtained.
- this object is achieved according to the invention by a process for the preparation of the pigment according to the invention by suspending the transparent support material in water and alternately coating it with a colorless, non-absorbent metal oxide with high and low refractive index by adding and hydrolysing the corresponding inorganic, water-soluble metal compounds, wherein the pH value necessary for the precipitation of the respective metal oxide is adjusted and kept constant by simultaneous addition of acid or base, and the coated support material is then separated from the aqueous suspension, dried and optionally calcined.
- the invention also relates to the use of the pigment according to the invention for the production of counterfeit-proof materials.
- they can be used as mixtures with commercially available pigments, for example inorganic and organic absorption pigments, metallic effect pigments, LCP pigments and pearlescent pigments.
- Suitable transparent carrier materials are layered silicates, in particular natural and synthetic mica, talc, kaolin, platelet-shaped aluminum oxide, glass and silicon dioxide platelets.
- the size of the base substrates is not critical per se and can be tailored to the respective application.
- the platelet-shaped substrates have a thickness between 0.1 and 5 ⁇ m, in particular between 0.2 and 4.5 ⁇ m.
- the expansion in the other two areas is usually between 1 and 250 ⁇ m, preferably between 2 and 200 ⁇ m, and in particular between 5 and 60 ⁇ m.
- the colorless, non-absorbent, high refractive index metal oxide is a single oxide or a mixture of oxides. Examples include titanium dioxide, zirconium oxide, zinc oxide and tin oxide.
- the term metal oxide with a high refractive index means metal oxides whose refractive index is greater than 1.8.
- Suitable colorless, non-absorbent metal oxides with a low refractive index are silicon dioxide, aluminum oxide, AIOOH, boron trioxide or mixtures thereof. If appropriate, the oxide layer with a low refractive index can contain alkali and alkaline earth oxides as constituents. Under the
- Metal oxides with a low refractive index are understood to be metal oxides whose refractive index is less than 1.8.
- the thickness and the number of layers of metal oxides with high and low refractive index is essential for the optical properties of the metal oxides with high and low refractive index.
- Pigment For a pigment with intense interference colors, the thickness of the individual layers must be adjusted exactly to one another.
- the pigment according to the invention is composed of at least three layers which are applied to the carrier material. Titanium dioxide is preferably used as the metal oxide with high refractive index and silicon dioxide as the metal oxide with low refractive index. In the case of titanium dioxide and silicon dioxide as layer materials, the thicknesses of the individual layers must be set to the following values: 1st layer: titanium dioxide, layer thickness: 65-95 nm
- 2nd layer silicon dioxide, layer thickness: 160-240 nm
- 3rd layer titanium dioxide, layer thickness: 50-70 nm
- Layer packs made of low and high refractive index materials can be applied.
- the layer thicknesses must be adjusted according to their refractive indices.
- 1st layer titanium dioxide, layer thickness: 80 nm
- 2nd layer silicon dioxide, layer thickness: 200 nm
- 3rd layer titanium dioxide, layer thickness: 60 nm
- the metal oxide layers are applied wet-chemically, it being possible to use the wet-chemical coating processes developed for the production of pearlescent pigments; such methods are e.g. described in DE 14 67 468, DE 19 59 988, DE 20 09 566, DE 22 14 545, DE 22 15 191, DE 22 44 298, DE 23 13 331, DE 25 22 572, DE 31 37 808, DE 31 37 809, DE 31 51 343, DE 31 51 354, DE 31 51 355,
- the substrate particles are suspended in water and mixed with one or more hydrolyzable metal salts at a pH value suitable for the hydrolysis, which is chosen so that the metal oxides or metal oxide hydrates directly on the particles - t -
- the pH value is usually kept constant by simultaneously adding a base.
- the pigments are then separated off, washed and dried and optionally annealed, the annealing temperature being able to be optimized with regard to the coating in each case. If desired, the pigments can be separated off after application of individual coatings, dried and optionally annealed, in order then to be resuspended to precipitate the further layers.
- An aqueous suspension is slowly added to a suspension of the material to be coated, heated to about 50-100 ° C., in particular 70-80 ° C.
- Titanium salt solution is added, and a largely constant pH of about 0.5-5, in particular about 1.5-2.5, is maintained by simultaneously metering in a base, such as, for example, aqueous ammonia solution or aqueous alkali metal hydroxide solution. As soon as the desired layer thickness of the TiO 2 precipitation is reached, the addition of the titanium salt solution and the base is stopped.
- a base such as, for example, aqueous ammonia solution or aqueous alkali metal hydroxide solution.
- This method also known as the titration method, is characterized in that an excess of titanium salt is avoided. This is achieved by supplying only such an amount of hydrolysis per unit of time as is required for a uniform coating with the hydrated TiO 2 and as per unit of time can be taken up by the available surface of the particles to be coated. There are therefore no hydrated titanium dioxide particles that are not deposited on the surface to be coated.
- the following procedure is to be used for the application of the silicon dioxide layers: A sodium silicate solution is metered into a suspension of the material to be coated, which is heated to approximately 50-100 ° C., in particular 70-80 ° C. By simultaneously adding 10% hydrochloric acid, the pH is at 4 to 10, preferably at 6.5 to
- the finished pigment it is also possible to subject the finished pigment to a post-coating or post-treatment which further increases the light, weather and chemical stability, or to facilitate handling of the pigment, in particular incorporation into different media.
- a post-coating or post-treatment which further increases the light, weather and chemical stability, or to facilitate handling of the pigment, in particular incorporation into different media.
- Post-coatings or post-treatments are, for example, the processes described in DE-PS 22 15 191, DE-OS 31 51 354, DE-OS 32 35 017 or DE-OS 33 34 598.
- the additional substances applied make up only about 0.1 to 5% by weight, preferably about 0.5 to 3% by weight, of the total pigment.
- the pigment according to the invention is preferably used for the production of counterfeit-proof materials made of paper and plastic.
- the pigment according to the invention can also be used in formulations such as paints, printing inks, lacquers, in plastics, ceramic materials and glasses, in cosmetics, for laser marking of paper and plastics and for the production of pigment preparations in the form of pellets, chips, granules, briquettes, etc. . be used.
- Counterfeit-proof paper materials are understood to mean, for example, securities such as bank notes, checks, tax stamps, stamps, train and plane tickets, lottery tickets, gift certificates, tickets, forms and shares.
- Counterfeit-proof plastic materials include, for example, credit cards, credit cards, telephone cards,
- binders which are usually suitable for printing inks.
- Suitable binders are cellulose, polyacrylate-polymethacrylate, alkyd, polyester, polyphenol, urea, melamine, polyterpene, polyvinyl, polyvinyl chloride, polyvinylpyrrolidone resins, polystyrenes, polyoefins, coumarone indene, hydrocarbon, Ketone, aldehyde, aromatic-formaldehyde resins, carbamic acid, sulfonamide, epoxy resins, polyurethanes and / or natural oils or derivatives of the substances mentioned.
- the printing ink contains the usual ingredients such as solvents, optionally water, defoamers, wetting agents, ingredients that influence rheology, antioxidation, etc.
- the pigment of the invention can be used for all known printing processes. Examples include gravure printing, flexographic printing, screen printing, bronzing and offset printing.
- the platelet-shaped pigment is well-oriented, i. H. is aligned as parallel as possible to the surface of the respective medium. This parallel orientation of the pigment particles is best achieved from a flow process and is generally the case with all known methods of plastics processing, painting, coating and pressing.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Paints Or Removers (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002536384A JP2004532284A (ja) | 2000-10-14 | 2001-09-18 | セキュリティ用顔料 |
US10/398,649 US7077897B2 (en) | 2000-10-14 | 2001-09-18 | Pigment for safety applications |
CA 2425555 CA2425555C (en) | 2000-10-14 | 2001-09-18 | Pigment for security applications |
AU2002221602A AU2002221602A1 (en) | 2000-10-14 | 2001-09-18 | Pigment for safety applications |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000151062 DE10051062A1 (de) | 2000-10-14 | 2000-10-14 | Pigment für Sicherheitsanwendungen |
DE10051062.0 | 2000-10-14 |
Publications (1)
Publication Number | Publication Date |
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WO2002033010A1 true WO2002033010A1 (de) | 2002-04-25 |
Family
ID=7659854
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/010764 WO2002033010A1 (de) | 2000-10-14 | 2001-09-18 | Pigment für sicherheitsanwendungen |
Country Status (7)
Country | Link |
---|---|
US (1) | US7077897B2 (de) |
JP (1) | JP2004532284A (de) |
CN (1) | CN1263812C (de) |
AU (1) | AU2002221602A1 (de) |
CA (1) | CA2425555C (de) |
DE (1) | DE10051062A1 (de) |
WO (1) | WO2002033010A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2004067645A3 (en) * | 2003-01-17 | 2004-10-21 | Engelhard Corp | Multi-layer effect pigment with the outermost layer having a larger thickness |
US20090008926A1 (en) * | 2004-05-05 | 2009-01-08 | Giesecke & Devrient Gmbh | Layer-Type Value Document Comprising an Ink Mixture in One Layer |
CN104031470A (zh) * | 2014-06-05 | 2014-09-10 | 哈尔滨绿科科技有限公司 | 一种水性镭射防伪油墨 |
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DE10252007A1 (de) * | 2002-11-06 | 2004-05-27 | Merck Patent Gmbh | Lasermarkierbare Pigmente |
US7993444B2 (en) * | 2003-01-17 | 2011-08-09 | Basf Catalysts Llc | Multi-layer effect pigment |
DE10354763A1 (de) * | 2003-11-21 | 2005-06-23 | Eckart Gmbh & Co. Kg | Effektpigmente mit Aluminium- oder Aluminiumlegierungskern, Verfahren zu deren Herstellung und Verwendung derselben |
DE102004039554A1 (de) * | 2004-08-13 | 2006-02-23 | Merck Patent Gmbh | Perlglanzpigmente |
KR101290386B1 (ko) | 2005-02-12 | 2013-07-26 | 바스프 카탈리스트 엘엘씨 | 투명한 고니오크로마틱 다층 효과 안료 |
WO2006088761A2 (en) * | 2005-02-12 | 2006-08-24 | Engelhard Corporation | Multilayer effect pigment |
WO2007024712A2 (en) * | 2005-08-26 | 2007-03-01 | Basf Catalysts Llc | Cosmetic and personal care formulations with goniochromatic non-quarter wave multi-quadrant multi-layer effect materials |
US20070048239A1 (en) * | 2005-08-26 | 2007-03-01 | Engelhard Corporation | Cosmetic and Personal Care Formulations with Goniochromatic Non-Quarter Wave Multi-Quadrant Multi-Layer Effect Materials |
DE102005045642B4 (de) | 2005-09-17 | 2009-03-19 | Stiftung Alfred-Wegener-Institut Für Polar- Und Meeresforschung | Anorganische Markierungspartikel auf der Basis von natürlichen Mikroorganismen zur Kennzeichnung von Produkten zu deren Originalitätsnachweis und Verfahren zur Herstellung |
EP1844945A1 (de) * | 2006-04-13 | 2007-10-17 | M-real Oyj | Verfahren zur Aufbringung von Interferenzpigmenten auf ein Substrat |
US20110113984A1 (en) * | 2006-10-18 | 2011-05-19 | Basf Catalysts Llc | Transparent Goniochromatic Multilayer Effect Pigment |
KR20100056459A (ko) * | 2007-07-12 | 2010-05-27 | 바스프 에스이 | 펄라이트 플레이크 기재 간섭 안료 |
CA2701847C (en) * | 2007-10-05 | 2013-03-26 | Ppg Industries Ohio, Inc. | Method of maintaining a color of a cured film formed from a coating composition |
CN101962492B (zh) * | 2009-07-24 | 2014-01-08 | 林文广 | 多层涂覆的随角异色干涉色珠光颜料 |
DE102009037935A1 (de) | 2009-08-19 | 2011-02-24 | Eckart Gmbh | Hochglänzende Mehrschichtperlglanzpigmente mit silberner Interferenzfarbe und enger Größenverteilung und Verfahren zu deren Herstellung |
DE102009037932A1 (de) * | 2009-08-19 | 2011-02-24 | Eckart Gmbh | Hochglänzende Mehrschichtperlglanzpigmente mit enger Größenverteilung und Verfahren zu deren Herstellung |
DE102009037933A1 (de) * | 2009-08-19 | 2011-02-24 | Eckart Gmbh | Hochglänzende Mehrschichtperlglanzpigmente mit nichtsilberner Interferenzfarbe und enger Größenverteilung und Verfahren zu deren Herstellung |
DE102009037934A1 (de) | 2009-08-19 | 2011-02-24 | Eckart Gmbh | Hochglänzende Mehrschichtperlglanzpigmente mit farbiger Interferenzfarbe und enger Größenverteilung und Verfahren zu deren Herstellung |
US8705805B2 (en) | 2011-01-10 | 2014-04-22 | Peter Alexander Forrest | Secure portable token and systems and methods for identification and authentication of the same |
JP5787317B2 (ja) * | 2011-12-08 | 2015-09-30 | 独立行政法人 国立印刷局 | 紫外線硬化型スクリーン印刷用光輝性インキ組成物。 |
CN103074063A (zh) * | 2012-12-19 | 2013-05-01 | 青岛盛瀚色谱技术有限公司 | 荧光材料 |
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BR112015023311A2 (pt) * | 2013-03-15 | 2017-07-18 | Basf Se | pigmento, método para fazer um pigmento e produto. |
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PL3034564T3 (pl) | 2014-12-19 | 2018-07-31 | Eckart Gmbh | Pigmenty efektowe o wysokiej transparentności, wysokim nasyceniu i wysokiej czystości barwy, sposób ich wytwarzania i ich zastosowanie |
ES2733082T3 (es) | 2014-12-19 | 2019-11-27 | Eckart Gmbh | Pigmentos de efecto de color rojo con croma alto y brillo alto, procedimiento para su preparación y uso de los mismos |
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CA3072286A1 (en) * | 2017-10-05 | 2019-04-11 | Wavefront Technology, Inc. | Optical structures providing dichroic effects |
EP3524647A1 (de) | 2018-02-12 | 2019-08-14 | Hubergroup Italia | Farbschichtfolge mit farbflop-effekt ohne interferenzpigmente |
CA3132715A1 (en) | 2019-04-04 | 2020-10-08 | Wavefront Technology, Inc. | Optical structures providing dichroic effects |
CN110156316B (zh) * | 2019-05-28 | 2021-09-10 | 江苏拜富科技股份有限公司 | 玻璃装饰用低温着色剂 |
EP3772737A1 (de) | 2019-08-06 | 2021-02-10 | hubergroup Deutschland GmbH | Verfahren zur bestimmung der zusammensetzung eines mehrschichtsystems mit vorbestimmter farb-flip-flop-wirkung |
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JP3389360B2 (ja) * | 1994-01-18 | 2003-03-24 | マツダ株式会社 | 光干渉材及びそれを含有する塗料 |
DE19822046A1 (de) * | 1998-05-16 | 1999-11-18 | Basf Ag | Goniochromatische Glanzpigmente auf Basis in einer reduzierenden Atmosphäre erhitzter, titanbeschichteter silikatischer Plättchen |
-
2000
- 2000-10-14 DE DE2000151062 patent/DE10051062A1/de not_active Withdrawn
-
2001
- 2001-09-18 JP JP2002536384A patent/JP2004532284A/ja active Pending
- 2001-09-18 CA CA 2425555 patent/CA2425555C/en not_active Expired - Fee Related
- 2001-09-18 WO PCT/EP2001/010764 patent/WO2002033010A1/de active Application Filing
- 2001-09-18 CN CNB018171850A patent/CN1263812C/zh not_active Expired - Fee Related
- 2001-09-18 AU AU2002221602A patent/AU2002221602A1/en not_active Abandoned
- 2001-09-18 US US10/398,649 patent/US7077897B2/en not_active Expired - Fee Related
Patent Citations (3)
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DE4419089A1 (de) * | 1994-06-01 | 1995-12-07 | Basf Ag | Verwendung von Interferenzpigmenten zur Herstellung von fälschungssicheren Wertschriften und Verpackungen |
DE19618569A1 (de) * | 1996-05-09 | 1997-11-13 | Merck Patent Gmbh | Mehrschichtige Interferenzpigmente |
DE19618566A1 (de) * | 1996-05-09 | 1997-11-13 | Merck Patent Gmbh | Mehrschichtige Interferenzpigmente |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004067645A3 (en) * | 2003-01-17 | 2004-10-21 | Engelhard Corp | Multi-layer effect pigment with the outermost layer having a larger thickness |
JP2007508447A (ja) * | 2003-01-17 | 2007-04-05 | エンゲルハード・コーポレーシヨン | 多層色彩効果顔料 |
JP2012237003A (ja) * | 2003-01-17 | 2012-12-06 | Basf Catalysts Llc | 多層色彩効果顔料 |
US20090008926A1 (en) * | 2004-05-05 | 2009-01-08 | Giesecke & Devrient Gmbh | Layer-Type Value Document Comprising an Ink Mixture in One Layer |
US8936846B2 (en) * | 2004-05-05 | 2015-01-20 | Giesecke & Devrient Gmbh | Layer-type value document comprising an ink mixture in one layer |
CN104031470A (zh) * | 2014-06-05 | 2014-09-10 | 哈尔滨绿科科技有限公司 | 一种水性镭射防伪油墨 |
CN104031470B (zh) * | 2014-06-05 | 2016-08-17 | 哈尔滨绿科科技有限公司 | 一种水性镭射防伪油墨 |
Also Published As
Publication number | Publication date |
---|---|
AU2002221602A1 (en) | 2002-04-29 |
DE10051062A1 (de) | 2002-04-18 |
CA2425555C (en) | 2009-11-03 |
CN1263812C (zh) | 2006-07-12 |
CN1498253A (zh) | 2004-05-19 |
US7077897B2 (en) | 2006-07-18 |
US20040003758A1 (en) | 2004-01-08 |
JP2004532284A (ja) | 2004-10-21 |
CA2425555A1 (en) | 2003-04-11 |
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