Film for optical elements
    1.
    发明授权
    Film for optical elements 有权
    光学元件胶片

    公开(公告)号:US06294229B1

    公开(公告)日:2001-09-25

    申请号:US09378036

    申请日:1999-08-20

    IPC分类号: C09K1952

    摘要: A film for optical elements is formed by a liquid crystalline composition comprising the following components (a) and (b): (a) a liquid crystalline polymer which exhibits an optically positive uniaxial property; and (b) a polycyclic compound having a molecular weight of not more than 1,000 and wherein a plurality of alicyclic rings and/or aromatic rings are connected together through a linkage chain of 0 to 4 main-chain carbon atoms bonded to different ring carbon atoms, with hydrocarbon groups each having 1 to 20 carbon atoms being bonded respectively to both end rings through a linkage chain of 0 to 4 main-chain carbon atoms, an orientation form formed in the state of liquid crystal of said liquid crystalline composition being fixed.

    摘要翻译: 用于光学元件的膜由液晶组合物形成,该液晶组合物包含以下组分(a)和(b):(a)具有光学正性单轴性质的液晶聚合物; 和(b)分子量不大于1000的多环化合物,其中多个脂环和/或芳环通过键合到不同环碳原子上的0至4个主链碳原子的连接链连接在一起 分别具有1〜20个碳原子的烃基分别通过0〜4个主链碳原子的连接链键合到两个端环,固定所述液晶组合物的液晶状态的取向形式。

    Derivative of brendane and process for preparing the same
    6.
    发明授权
    Derivative of brendane and process for preparing the same 失效
    布伦烷的衍生物及其制备方法

    公开(公告)号:US4656307A

    公开(公告)日:1987-04-07

    申请号:US755241

    申请日:1985-07-15

    CPC分类号: C07C62/24

    摘要: According to the invention a derivative of brendane is provided. The derivative of brendane is represented by the general formula of: ##STR1## wherein R is a hydrogen atom or a hydrocarbon group having 1 to 6 carbon atoms, and R.sup.1 to R.sup.3 each represent a hydrogen atom or a methyl group. The brendane derivative is prepared by reacting an alkenylnorbornene of the general formula of: ##STR2## wherein R.sup.1 to R.sup.3 each represent a hydrogen atom or a methyl group, with carbon monoxide and an alcohol or water in the presence of a catalyst of Group VIII metal compound of the periodic table.

    摘要翻译: 根据本发明,提供了布伦烷衍生物。 布伦烷的衍生物由以下通式表示:其中R是氢原子或具有1至6个碳原子的烃基,R1至R3各自表示氢原子或甲基。 布伦烷衍生物通过在VIII族金属的催化剂存在下使通式为:其中R 1至R 3各自表示氢原子或甲基的烯基降冰片烯与一氧化碳和醇或水反应制备 周期表的化合物。