Reflective film
    73.
    发明授权
    Reflective film 失效
    反光膜

    公开(公告)号:US06319963B1

    公开(公告)日:2001-11-20

    申请号:US09384029

    申请日:1999-08-26

    IPC分类号: C08F246

    摘要: The invention relates to a process as described in claim of preparing a reflective film comprising a layer of a polymerized mesogenic material with helically twisted structure, wherein the helix axis is perpendicular to the film plane, and containing regions with varying helical pitch, to a reflective film obtainable by such a process, to the use of such a reflective film as reflective broadband or notch polarizer or as a multicolored film or image in liquid crystal displays, as color filter, in effect pigments, for decorative or security applications, and to a liquid crystal display comprising a liquid crystal cell and a reflective polarizer as described in the foregoing and the following, and optionally further comprising one or more compensaters or polarizers.

    摘要翻译: 本发明涉及一种如权利要求1所述的制备反射膜的方法,该反射膜包括具有螺旋扭曲结构的聚合的介晶材料层,其中螺旋轴垂直于膜平面并且包含具有不同螺旋间距的区域, 通过这种方法获得的膜可以用作反射宽带或陷波偏振器或作为液晶显示器中的多彩色膜或图像的反射膜,作为彩色滤光片,用于装饰或安全应用的颜色,以及 液晶显示器包括如上所述的液晶单元和反射偏振器,以及以下,以及任选地还包括一个或多个补偿器或偏振器。

    Cholesteric flakes
    75.
    发明授权
    Cholesteric flakes 失效
    胆固醇片

    公开(公告)号:US06207770B1

    公开(公告)日:2001-03-27

    申请号:US09125295

    申请日:1998-08-14

    IPC分类号: C08G8500

    摘要: The invention relates to cholesteric polymer flakes obtainable from a chiral polymerizable mesogenic material, to methods of manufacturing such cholesteric flakes, to the use of certain chiral and achiral polymerizable compounds with one or more terminal polymerizable groups for the manufacturing of such flakes and to the use of such cholesteric flakes as effect pigments in spraying or printing inks or paints or colored plastics for different applications, especially for automotive use, cosmetic products and security applications.

    摘要翻译: 本发明涉及可由手性可聚合介晶材料获得的胆甾醇型聚合物薄片,制造这种胆甾醇型薄片的方法,以及使用某些具有一个或多个端基可聚合基团的手性和非手性可聚合化合物用于制造这种薄片以及使用 的这种胆甾醇薄片作为喷涂或印刷油墨或油漆或着色塑料用于不同应用,特别是用于汽车用途,化妆品和安全应用的效果颜料。

    Electrooptical liquid crystal system
    77.
    发明授权
    Electrooptical liquid crystal system 有权
    电光液晶系统

    公开(公告)号:US06187222B1

    公开(公告)日:2001-02-13

    申请号:US09506815

    申请日:2000-02-18

    IPC分类号: C09K1934

    摘要: An electroptical system which between 2 electrode layers contains a PDLC film comprising a liquid crystal mixture forming micro-droplets in an optically isotropic, transparent polymer matrix, in which one of the refractive indices of the liquid crystal mixture is matched to the refractive index of the polymer matrix, which exhibits an electrically switchable transparency essentially independent of the polarization of the incident light, the precursor of the PDLC film of which comprises one or more monomers, oligomers and/or prepolymers and a photoinitiator, and is cured photoradically, the liquid crystal mixture of which comprises one or more compounds of the formula I in which the substituents are defined herein characterized in that the liquid crystal mixture additionally contains one or more reactive liquid crystalline compounds in order to obtain improved switching times especially at low temperatures.

    摘要翻译: 在2个电极层之间的光学系统包含PDLC膜,其包含在光学各向同性的透明聚合物基质中形成微滴的液晶混合物,其中液晶混合物的折射率之一与聚合物的折射率相匹配 基质,其表现出基本上与入射光的极化无关的电可切换透明体,其PDLC膜的前体包含一种或多种单体,低聚物和/或预聚物和光引发剂,并且在光电偶存下固化,液晶混合物 其包含一种或多种式Iin的化合物,其取代基在本文中定义,其特征在于液晶混合物另外含有一种或多种反应性液晶化合物,以便获得改进的切换时间,特别是在低温下。