Acrylic acid derivative compounds and polymeric liquid crystal obtained by polymerizing the same
    2.
    发明授权
    Acrylic acid derivative compounds and polymeric liquid crystal obtained by polymerizing the same 失效
    丙烯酸衍生物化合物和通过聚合得到的聚合物液晶

    公开(公告)号:US06562259B1

    公开(公告)日:2003-05-13

    申请号:US09720820

    申请日:2001-01-12

    IPC分类号: C09K1912

    摘要: The present invention provides a photopolymerizable liquid crystal monomer having high durability, a low melting point and an enantiotropic property. The photopolymerizable liquid crystal monomer is a 4-(4-(alkyloxycarbonyloxy)benzoyloxy)phenyl acrylate represented by the following formula A [wherein Ph is a 1,4-phenylene group, and R is an alkyl group]: CH2═CHCOO—Ph—OCO—Ph—OCOO—R  Formula A Further, the present invention provides a polymer liquid crystal obtained by polymerizing a composition containing the monomer. Further, the present invention provides an optical element employing the polymer liquid crystal, and an optical head employing the optical element as a polarizing hologram element.

    摘要翻译: 本发明提供具有高耐久性,低熔点和对映性的光聚合性液晶单体。光聚合性液晶单体是由下式A表示的4-(4-(4-(烷氧基羰氧基)苯甲酰氧基)苯基丙烯酸酯[其中Ph 是1,4-亚苯基,R是烷基]。此外,本发明提供通过聚合含有单体的组合物获得的聚合物液晶。此外,本发明提供一种使用聚合物液晶的光学元件 以及使用光学元件作为偏光全息元件的光学头。

    Anthraquinone compounds
    3.
    发明授权
    Anthraquinone compounds 失效
    蒽醌化合物

    公开(公告)号:US4138558A

    公开(公告)日:1979-02-06

    申请号:US800173

    申请日:1977-05-25

    CPC分类号: C09B62/024 D06P1/382 D06P5/04

    摘要: Anthraquinone compounds represented by the following formula are useful as dyes: ##STR1## wherein Y stands for a hydrogen atom or a nitro group, Z stands for an oxygen or sulfur atom when Y stands for a hydrogen atom, but Z stands for an oxygen atom when Y stands for a nitro group, R.sub.1 stands for a hydrogen atom or a lower alkyl group, R.sub.3 stands for a halogen atom or a group R.sub.2 wherein R.sub.2 stands for an amino, substituted or unsubstituted lower alkylamino, substituted or unsubstituted arylamino, substituted or unsubstituted alkoxy, substituted or unsubstituted aryloxy, substituted or unsubstituted alkylthio, substituted or unsubstituted arylthio group, or a group ##STR2## Q stands for a nitrogen atom or carbon atom bearing a halogen atom when R.sub.3 stands for a halogen atom, but Q stands for a nitrogen atom when R.sub.3 stands for a group R.sub.2, X stands for a halogen atom, the group ##STR3## links to the benzene ring in the 3'- or 4'-position, and M stands for an alkali metal or hydrogen atom.

    摘要翻译: 由下式表示的蒽醌化合物可用作染料:其中Y表示氢原子或硝基,Z表示氧或硫原子,当Y表示氢原子时,可以使用 当Y代表硝基时,Z表示氧原子,R1表示氢原子或低级烷基,R3表示卤素原子或R2基团,其中R2表示氨基,取代或未取代的低级烷基氨基,取代的 或未取代的芳基氨基,取代或未取代的烷氧基,取代或未取代的芳氧基,取代或未取代的烷硫基,取代或未取代的芳硫基或基团。当R3代表卤素时,Q表示带有卤原子的氮原子或碳原子 原子,但当R3代表基团R2时,Q表示氮原子,X表示卤素原子,“IMAGE”键连接在3'或4“位的苯环,M表示 碱金属或氢 原子。