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    SECURITY ELEMENTS AND METHOD FOR THEIR MANUFACTURE
    11.
    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。

    PRINTING DIFFRACTION GRATINGS ON PAPER AND BOARD
    12.
    发明申请
    PRINTING DIFFRACTION GRATINGS ON PAPER AND BOARD 审中-公开
    印刷纸和纸板上的折射衍射

    公开(公告)号：US20150137504A1

    公开(公告)日：2015-05-21

    申请号：US14578657

    申请日：2014-12-22

    Applicant: BASF SE

    Inventor： Michelle RICHERT ,  Thomas BOLLE ,  Roland FLEURY

    IPC: B42D25/405 ,  B05D3/06 ,  B42D25/30

    CPC classification number: B42D25/405 ,  B05D3/067 ,  B41M1/24 ,  B41M3/06 ,  B41M3/148 ,  B41M7/00 ,  B41M7/0081 ,  B42D25/21 ,  B42D25/23 ,  B42D25/24 ,  B42D25/29 ,  B42D25/30 ,  B42D25/324 ,  B42D25/328 ,  B42D25/373 ,  B42D25/42 ,  B42D25/425 ,  B42D2033/10 ,  B42D2033/30 ,  G03H1/028 ,  G03H2001/185 ,  G03H2250/36 ,  G03H2270/12

    Abstract: A method and an apparatus for forming a surface relief microstructure, especially an optically variable image on a paper substrate are provided, the method comprising the steps of: A) applying a curable composition to at least a portion of the frontside of the paper substrate; B) contacting at least a portion of the curable composition with surface relief microstructure, especially optically variable image forming means; C) curing the composition by using at least one UV lamp (1, 2, 3) which is arranged on the backside of the paper substrate; D) optionally depositing a layer of a transparent high refractive index material and/or a metallic layer on at least a portion of the cured composition, wherein the lamp (1, 2, 3) having emission peak(s) in the UV-A and near VIS range and the curable composition comprises at least a photoinitiator which absorbs in the UV-A region and preferably in the near VIS range. A paper product obtainable uses the method and an apparatus for forming a surface relief microstructure on a paper substrate. Surface relief microstructures, such as holograms may be replicated rapidly and with accuracy on a paper substrate by using the method and the apparatus.

    Abstract translation: 提供一种用于形成表面浮雕微结构，特别是在纸基材上的光学可变图像的方法和装置，所述方法包括以下步骤：A）将可固化组合物施加到纸基材的前侧的至少一部分; B）使可固化组合物的至少一部分与表面浮雕微结构接触，特别是光学上可变的成像装置; C）通过使用布置在纸基材的背面上的至少一个UV灯（1,2,3）来固化组合物; D）任选地在所述固化组合物的至少一部分上沉积透明高折射率材料和/或金属层的层，其中在所述UV-A中具有发射峰的灯（1,2,3） 并且接近VIS范围，并且可固化组合物至少包含在UV-A区域中吸收的光引发剂，优选在接近VIS范围内。 可获得的纸制品使用在纸基材上形成表面浮雕微结构的方法和装置。 通过使用该方法和装置，诸如全息图之类的表面浮雕微结构可以在纸基材上快速且准确地复制。

    SECURITY ELEMENT
    13.
    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.

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