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    IMPROVED PROCESS FOR PRODUCING POLYALKYL(METH)ACRYLATE SEMI-FINISHED PRODUCTS INCLUDING PARTICULATE ADDITIVES
    3.
    发明公开
    IMPROVED PROCESS FOR PRODUCING POLYALKYL(METH)ACRYLATE SEMI-FINISHED PRODUCTS INCLUDING PARTICULATE ADDITIVES 审中-公开

    公开(公告)号：EP4477682A1

    公开(公告)日：2024-12-18

    申请号：EP23178671.6

    申请日：2023-06-12

    Applicant: POLYVANTIS GmbH

    Inventor： MUECK, Oliver ,  KRIER, Claudia ,  HELLER, Marian

    IPC: C08F265/06 ,  C08J5/18 ,  C08F220/14

    Abstract: The present invention relates to a process for producing polyalkyl(meth)acrylate semi-finished products, preferably polymethylmethacrylate (PMMA) semi-finished products, such as sheets and blocks, via a casting process, wherein particulate additives, such as particulate infrared absorber (IR absorber), are homogenously dispersed in the first reaction mixture comprising the alkyl (meth)acrylate monomers. The inventive process allows a homogenous dispersion of the particulate additive in the polymer matrix and high transparency of the semi-finished product. Further, the invention is directed to the semi-finished products obtained by the inventive process.

    COMPOSITION FOR COLLOIDAL CRYSTALS, AND MULTILAYER BODY
    4.
    发明公开
    COMPOSITION FOR COLLOIDAL CRYSTALS, AND MULTILAYER BODY 审中-公开

    公开(公告)号：EP4458459A1

    公开(公告)日：2024-11-06

    申请号：EP22915851.4

    申请日：2022-12-21

    Applicant: artience Co., Ltd.

    Inventor： MAMIYA Michitaka ,  NAKAZATO Atsushi ,  OBA Kazutoshi

    IPC: B01J13/00 ,  B32B27/00 ,  C08F265/06

    Abstract: The present invention provides: a composition for colloidal crystals, the composition having excellent coatability and long-term stability and being capable of forming a colloidal crystal that has excellent color developability and heat resistance; and a multilayer body which comprises a colloidal crystal layer that is formed from this composition for colloidal crystals and has excellent color developability and heat resistance. (1) The solid content concentration is 25% by mass or more. (2) The pH in an environment at 25°C is 4 to 14. (3) The viscosity in an environment at 25°C is 0.1 to 200 mPa·s. (4) The cores of the core-shell type resin fine particles have a glass transition temperature of 80°C or more. (5) The shells of the core-shell type resin fine particles have a glass transition temperature of 40°C or more.

    OPTICAL IMAGING ELEMENT WITH MAGNETIC REFLECTIVE LAYER IMAGING UNITS, AND PREPARATION METHOD THEREFOR
    5.
    发明公开
    OPTICAL IMAGING ELEMENT WITH MAGNETIC REFLECTIVE LAYER IMAGING UNITS, AND PREPARATION METHOD THEREFOR 审中-公开

    公开(公告)号：EP4455739A1

    公开(公告)日：2024-10-30

    申请号：EP23742931.1

    申请日：2023-01-18

    Applicant: Xianghang (Rudong) Technology Co., Ltd

    Inventor： HAO, Yaqi ,  ZHANG, Bing

    IPC: G02B1/00 ,  C09J151/00 ,  C09J11/04 ,  C08F265/06

    Abstract: An optical imaging element and a preparation method are provided. The optical imaging element includes a plurality of superimposed optical imaging units. The optical imaging unit includes an upper light-transmitting laminate and a lower light-transmitting laminate. Both the upper light-transmitting laminate and the lower light-transmitting laminate are composed of a plurality of light-transmitting strips with reflective layers in parallel. The direction of a first light-transmitting strip in the upper light-transmitting laminate is vertically intersected with the direction of a second light-transmitting strip in the lower light-transmitting laminate. The reflective layer is a sandwich laminated metal magnetic thin layer, including a first metal aluminum layer, a central magnetic layer, and a second metal aluminum layer. A binary magneto-optical photonic crystal with a modular structure, or a ternary magneto-optical photonic crystal structure can be formed, thereby realizing the non-reciprocal phase shift region, reducing the light loss, and improving the refraction imaging accuracy.

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