MULTIFUNCTIONAL LIQUID CRYSTALLINE PHOTOREACTIVE POLYMERS FOR POLARIZATION HOLOGRAPHY

    公开(公告)号:WO2022198031A1

    公开(公告)日:2022-09-22

    申请号:PCT/US2022/020923

    申请日:2022-03-18

    IPC分类号: C09K19/38 C09K19/20 C09K19/04

    摘要: A multifunctional liquid crystalline photoreactive polymer in which at least some of the polymer side-chains have an ultraviolet photoreactive moiety and at least some of the polymer side-chains have a calamitic mesogenic moiety are provided. At least some of the polymer side-chains have a photo-curable moiety a thermal-curable moiety. In some embodiments, the polymer is in the form of a co-polymer. In some embodiments, the polymer is in the form of a ter-polymer. The polymer is used in applications that require stable birefringement films. Such films are produced from the polymer by subjecting the polymer to ultra-violet light to cause side-chain cross-linking thereby inducing anisotropy. The anisotropy is then amplified by exposing the polymer to an elevated temperature.

    LIQUID CRYSTAL MIXTURE AND LIQUID CRYSTAL DISPLAY

    公开(公告)号:WO2022122780A1

    公开(公告)日:2022-06-16

    申请号:PCT/EP2021/084684

    申请日:2021-12-08

    摘要: The invention relates to compounds of formula I, R11-Sp11-X11[-A-Z]o-A11-CY11=CY12[-C=O]x[-O]y-A[-Z-A]P-X21-Sp21-R21 I wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to a method of production of said compounds, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to a LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.

    LIQUID CRYSTAL COMPOUNDS
    6.
    发明申请

    公开(公告)号:WO2022117554A1

    公开(公告)日:2022-06-09

    申请号:PCT/EP2021/083546

    申请日:2021-11-30

    申请人: MERCK PATENT GMBH

    IPC分类号: C09K19/20 C09K19/02 C09K19/04

    摘要: New compounds and their mixtures enable the formation of the ferroelectric nematic liquid crystalline phase at ambient temperature. Compounds of the formula I are presented, in which the variable groups have the meanings indicated in Claim 1. Liquid crystal media comprise at least one compound of the formula I.

    POLYMERIZABLE LIQUID CRYSTAL MATERIAL AND POLYMERIZED LIQUID CRYSTAL FILM

    公开(公告)号:WO2022063902A1

    公开(公告)日:2022-03-31

    申请号:PCT/EP2021/076208

    申请日:2021-09-23

    申请人: MERCK PATENT GMBH

    摘要: The invention relates to a polymerizable LC material comprising one or more reactive mesogenic compounds, one or more chiral compounds and one or more compounds of formula I, wherein the individual radicals have one of the meaning as given in the claims. Furthermore, the present invention relates also to a method for its preparation, a polymer film with improved thermal and UV stability obtainable from a corresponding polymerizable LC material, to a method of preparation of such polymer film, and to the use of such polymer film and said polymerizable LC material in optical, electro-optical, decorative or security devices.