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    SECURITY ELEMENTS AND METHOD FOR THEIR MANUFACTURE
    2.
    发明申请
    SECURITY ELEMENTS AND METHOD FOR THEIR MANUFACTURE 审中-公开
    安全要素及其制造方法

    公开(公告)号：US20160101642A1

    公开(公告)日：2016-04-14

    申请号：US14891528

    申请日：2014-05-16

    Applicant: BASF SE

    Inventor： Michelle RICHERT ,  Oliver SEEGER ,  Nikolay A. GRIGORENKO

    IPC: B42D25/29 ,  C08K3/08 ,  B42D25/328 ,  B42D25/364 ,  B42D25/373 ,  C09D101/18 ,  B41M3/14

    CPC classification number: B42D25/29 ,  B41M3/14 ,  B41M3/148 ,  B42D25/328 ,  B42D25/364 ,  B42D25/373 ,  C08K3/08 ,  C08K2003/0806 ,  C09D5/00 ,  C09D5/29 ,  C09D101/18

    Abstract: The present invention relates to complex security elements based on liquid crystal coatings which are subsequently coated with specific metallic nano-shaped metal particles, a method for their manufacture, in particular on a glass, paper or on a plastic substrate and a security product obtainable using the security element. The security element may contain additionally an embossed surface relief microstructure, especially an optically variable image (an optically variable device, OVD), such as a hologram. A further aspect of the invention is the use of such a security element for the prevention of counterfeit or reproduction of a document of value.

    Abstract translation: 本发明涉及基于液晶涂层的复杂安全元件，其随后涂覆有特定的金属纳米金属颗粒，其制造方法，特别是在玻璃，纸或塑料基材上的方法，以及可使用 安全元素。 安全元件还可另外包含压花表面浮雕微结构，特别是光学可变图像（光学可变器件，OVD），例如全息图。 本发明的另一方面是使用这种安全元件来防止伪造或复制有价值的文件。

    COMPOSITIONS, COMPRISING PLATELET-SHAPED TRANSITION METAL PARTICLES
    3.
    发明公开
    COMPOSITIONS, COMPRISING PLATELET-SHAPED TRANSITION METAL PARTICLES 审中-公开

    公开(公告)号：US20240287281A1

    公开(公告)日：2024-08-29

    申请号：US18559811

    申请日：2022-05-11

    Applicant: BASF SE

    Inventor： Nikolay A. GRIGORENKO ,  Andre OSWALD ,  Holger LEYBACH ,  Ralf KNISCHKA ,  Andreas GERNANDT

    IPC: C08K3/08 ,  B42D25/324 ,  B42D25/364 ,  B42D25/41 ,  B42D25/425 ,  C08K5/49 ,  C08K7/00

    CPC classification number: C08K3/08 ,  B42D25/324 ,  B42D25/364 ,  B42D25/41 ,  B42D25/425 ,  C08K5/49 ,  C08K7/00 ,  C08K2201/003

    Abstract: The present invention relates to compositions, comprising



    (A) platelet-shaped transition metal particles, wherein the number mean diameter of the platelet-shaped transition metal particles, present in the composition, is in the range of from 15 nm to 1000 nm, the transition metal is selected from silver, copper, gold and palladium, especially silver and copper, very especially silver;
    (B) one, or more reactive diluents (B);
    (C) one, or more oligomers (C);
    (D) one, or more photoinitiators (D);
    (E) at least a surfactant (E), which is a block copolymer, comprising at least a block A and a block B, wherein
    a) the block A comprises
    a1) monomer units (A1) derived from a compound selected from alkyl (meth)acrylates, alkyl (meth)acrylamides, or any mixture thereof, and
    a2) monomer units (A2) derived from a hydroxy group, or ether group containing alkyl (meth)acrylate;
    b) the block B comprises monomer units (B) derived from a compound selected from fluorinated (meth)acrylic esters of formula






    H2C═CR46(C(O)ORF-1)  (XX), wherein



    R46 is H, or a methyl group; and
    RF-1 is an organic residue containing a perfluorinated alkyl group;
    (F) optionally one, or more polymeric binders;
    (F) optionally one, or more solvents; and
    (H) optionally further additives.




    The coatings, obtained with said compositions, show one color, when observed in transmission and another color, when observed in reflection on both sides of the cured coating.

    SECURITY ELEMENT
    4.
    发明申请
    SECURITY ELEMENT 有权

    公开(公告)号：US20220088957A1

    公开(公告)日：2022-03-24

    申请号：US17424607

    申请日：2020-01-20

    Applicant: BASF SE

    Inventor： Nikolay A. GRIGORENKO ,  Michelle RICHERT

    IPC: B42D25/373 ,  B42D25/382 ,  B42D25/45 ,  C09D11/037 ,  C09D11/033 ,  C09D11/14

    Abstract: The present invention relates to security elements, comprising (a) a substrate, (b) on at least part of the substrate surface a metal layer, (c) optionally on at least part of the metal layer a dielectric layer, (d) on at least part of the metal layer, or the dielectric layer, a layer obtained by overcoating the metal layer, or the dielectric layer with a composition, comprising (i) silver nanoparticles, (ii) a solvent, (iii) (surface) stabilizing agent(s) and (iv) optionally a binder, and (e) a protective layer on top of layer (d). The maximum absorption wavelength of the silver nanoparticles in layer (d) is controlled by the amount of (surface) stabilizing agent(s) and optionally binder relative to the amount of silver nanoparticles to be preferably in the range of 700 to 1600 nm.

    METAL OXIDE NANOPARTICLES
    6.
    发明申请
    METAL OXIDE NANOPARTICLES 有权

    公开(公告)号：US20220389245A1

    公开(公告)日：2022-12-08

    申请号：US17760782

    申请日：2020-09-14

    Applicant: BASF SE

    Inventor： Nikolay A. GRIGORENKO ,  Michelle RICHERT ,  Andre OSWALD

    IPC: C09D11/037 ,  C01G23/053 ,  C09C1/36 ,  C09C3/08 ,  C09D11/101 ,  C09D11/107 ,  B42D25/373

    Abstract: The present invention relates to metal oxide nanoparticles, a method for their production, a coating, or printing composition, comprising the metal oxide nanoparticles and the use of the composition for coating of surface relief micro- and nanostructures (e.g. holograms), manufacturing of optical waveguides, solar panels, light outcoupling layers for display and lighting devices and anti-reflection coatings. Holograms are bright and visible from any angle, when coated, or printed with the composition, comprising the metal oxide nanoparticles.

    UV-CURABLE COATINGS HAVING HIGH REFRACTIVE INDEX
    9.
    发明公开
    UV-CURABLE COATINGS HAVING HIGH REFRACTIVE INDEX 审中-公开

    公开(公告)号：US20230312944A1

    公开(公告)日：2023-10-05

    申请号：US18021638

    申请日：2021-08-18

    Applicant: BASF SE

    Inventor： Nikolay A. GRIGORENKO ,  Andre OSWALD ,  Gloria RUIZ GOMEZ

    IPC: C09D7/61 ,  C09D7/20 ,  C09D1/00 ,  B05D1/00 ,  B05D3/06

    CPC classification number: C09D7/61 ,  C09D7/20 ,  C09D1/00 ,  B05D1/005 ,  B05D3/067 ,  B05D2601/24

    Abstract: The present invention relates to coating compositions, comprising i) single or mixed metal oxide nanoparticles, wherein the volume average diameter (Dv50) of the metal oxide nanoparticles is in the range of 1 to 20 nm; the nanoparticles comprise at least one volatile surface-modifying compound selected from alcohols, β-diketones, or salts thereof; carboxylic acids and β-ketoesters and Ge mixtures thereof, wherein the total amount of volatile surface-modifying compounds is at least 5% by weight, preferably at least 10% by weight based on the amount of metal oxide nano-particles, and ii) a solvent, coatings obtained therefrom and the use of the comositions for coating surface relief micro- and nanostructures (e.g. holograms), manufacturing of optical waveguides, solar panels, light outcoupling layers for display and lighting devices and anti-reflection coatings. Coatings obtained from the coating composition have a high refractive index and holograms are bright and visible from any angle, when the coating compositions are applied to them.

    COMPOSITIONS, COMPRISING PLATELET-SHAPED TRANSITION METAL PARTICLES
    10.
    发明公开
    COMPOSITIONS, COMPRISING PLATELET-SHAPED TRANSITION METAL PARTICLES 审中-公开

    公开(公告)号：US20230241675A1

    公开(公告)日：2023-08-03

    申请号：US17918918

    申请日：2021-04-16

    Applicant: BASF SE

    Inventor： Nikolay A. GRIGORENKO ,  Andre OSWALD

    IPC: B22F1/054 ,  B22F1/102 ,  B22F1/052 ,  C09D11/037 ,  C09D5/29 ,  C09D7/40

    CPC classification number: B22F1/0551 ,  B22F1/102 ,  B22F1/052 ,  C09D11/037 ,  C09D5/29 ,  C09D7/70

    Abstract: The present invention relates to compositions, comprising platelet-shaped transition metal particles, wherein the number mean diameter of the platelet-shaped transition metal particles, present in the composition, is in the range of 15 nm to 1000 nm and the number mean thickness of the platelet-shaped transition metal particles, present in the composition, is in the range of 2 to 40 nm, the transition metal is selected from silver, copper, gold and palladium and the platelet-shaped transition metal particles bear a surface modifying agent of formula A-(CHR9)r—R10 (V), wherein if r is 1, A is a C1-C25alkyl group substituted with one, or more fluorine atoms; a C2-C25alkenyl substituted with one, or more fluorine atoms; a C2-C25alkynyl group substituted with one, or more fluorine atoms; a C3-C20cycloalkyl group substituted with one, or more fluorine atoms; or a C6-C24aryl group substituted with one, or more fluorine atoms, CF3 or —O—CF3 groups; if r is 0, A is a C6-C24aryl group substituted with one, or more fluorine atoms, CF3 or —O—CF3 groups; or a C7-C24aralkyl group substituted with one, or more fluorine atoms, CF3 or —O—CF3 groups;
    R9 is H, or a C1-C4alkyl group; and R10 is a thiol group, or an amino group.
    Surface modification with fluorinated thiols/amines allows to tune the surface properties of silver nanoplatelets in such a way, as to, on the one hand, make them dispersible and colloidally stable in the finished printing ink system, and on the other hand, allow them to migrate to the substrate and print surfaces upon drying of the solvent in the printed layer.

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