High refractive index polymers
    1.
    发明授权
    High refractive index polymers 失效
    高折射率聚合物

    公开(公告)号:US5132430A

    公开(公告)日:1992-07-21

    申请号:US721191

    申请日:1991-06-26

    IPC分类号: C07D209/88

    CPC分类号: C07D209/88

    摘要: Ethylenically unsaturated polymerizable acrylic (or methacrylic) monomers having pendant halogenated carbazole moieties, useful for the production of high refractive index polymers, are disclosed. The monomers are useful for the bonding of optical elements in the fabrication of optical devices.

    摘要翻译: 公开了可用于生产高折射率聚合物的具有侧卤化咔唑部分的烯属不饱和可聚合丙烯酸(或甲基丙烯酸)单体。 单体可用于光学元件的制造中的光学元件的结合。

    Monomers containing bis(trifluoromethyl)biphenylene radicals
    2.
    发明授权
    Monomers containing bis(trifluoromethyl)biphenylene radicals 失效
    含有双(三氟甲基)亚联苯基的单体

    公开(公告)号:US4628125A

    公开(公告)日:1986-12-09

    申请号:US578694

    申请日:1984-02-09

    IPC分类号: C08G63/682 C07C39/15

    CPC分类号: C08G63/6826

    摘要: A class of polyesters comprising recurring units having certain bis(trifluoromethyl)biphenylene radicals is disclosed. The polyesters exhibit favorable solubility properties in certain organic solvents so as to facilitate the production of the polyesters via polycondensation methods to film- and fiber-forming molecular weights. Monomeric compounds comprising a bis(trifluoromethyl)biphenylene radical and useful for the production of the polyesters are also disclosed.

    摘要翻译: 公开了一类包含具有某些双(三氟甲基)亚联苯基的重复单元的聚酯。 聚酯在某些有机溶剂中表现出良好的溶解性,从而有助于通过缩聚方法将聚酯生产成膜和成纤分子量。 还公开了包含双(三氟甲基)亚联苯基并且可用于制备聚酯的单体化合物。

    Polyesters containing bis(trifluoromethyl)biphenylene radicals
    3.
    发明授权
    Polyesters containing bis(trifluoromethyl)biphenylene radicals 失效
    含有双(三氟甲基)亚联苯基的聚酯

    公开(公告)号:US4433132A

    公开(公告)日:1984-02-21

    申请号:US414473

    申请日:1982-09-02

    CPC分类号: C08G63/6826

    摘要: A class of polyesters comprising recurring units having certain bis(trifluoromethyl)biphenylene radicals is disclosed. The polyesters exhibit favorable solubility properties in certain organic solvents so as to facilitate the production of the polyesters via polycondensation methods to film- and fiber-forming molecular weights. Monomeric compounds comprising a bis(trifluoromethyl)biphenylene radical and useful for the production of the polyesters are also disclosed.

    摘要翻译: 公开了一类包含具有某些双(三氟甲基)亚联苯基的重复单元的聚酯。 聚酯在某些有机溶剂中表现出良好的溶解性,从而有助于通过缩聚方法将聚酯生产成膜和成纤分子量。 还公开了包含双(三氟甲基)亚联苯基并且可用于制备聚酯的单体化合物。

    Liquid crystal compounds having ether tail moiety
    9.
    发明授权
    Liquid crystal compounds having ether tail moiety 失效
    具有醚尾部分的液晶化合物

    公开(公告)号:US5132041A

    公开(公告)日:1992-07-21

    申请号:US61072

    申请日:1987-06-23

    摘要: Disclosed are smetic liquid crystal compounds exhibiting ferroelectric behavior and having the formulaR.sup.1 --OR.sup.2).sub.a O--R.sup.3).sub.b Z--R*wherein R.sup.1 is alkyl or alkoxyalkyl, R.sup.2 and R.sup.3 are each alkylene, a is an integer of at least one, b is zero or one, R* is an optically active group containing an asymmetric center and --Z-- is an organic divalent core radical having parallel or coaxially extending bonds at the terminal ends thereof, the core radical having an axial ratio of at least two and being characterized by an essentially rigid and flat molecular structure. Presence of the ether-interrupted hydrocarbon tail moiety at the terminal end of the compounds provides a lowering in observed temperatures of phase transition.

    摘要翻译: 公开了具有铁电性能并且具有式R1-OR2)的芳族液晶化合物,其中R1是烷基或烷氧基烷基,R2和R3各自是亚烷基,a是至少一个的整数,b是 0或1,R *是含有不对称中心的光学活性基团,-Z-是在其末端具有平行或同轴延伸的键的有机二价核心基团,所述核心基团具有至少两个的轴比,并且为 其特征在于基本上刚性和平坦的分子结构。 在化合物末端存在醚中断的烃尾部分提供观察到的相变温度的降低。

    Liquid crystal compounds having chiral ester head groups
    10.
    发明授权
    Liquid crystal compounds having chiral ester head groups 失效
    具有手性酯基团的液晶化合物

    公开(公告)号:US5141669A

    公开(公告)日:1992-08-25

    申请号:US373522

    申请日:1989-06-30

    IPC分类号: C07C69/94 C09K19/20

    CPC分类号: C09K19/2021 C07C69/94

    摘要: Liquid crystal compounds which show a ferroelectric phase and which exhibit high spontaneous polarization values and smectic behavior over a range of temperatures have the formula ##STR1## wherein R.sup.1 is alkyl of from 1 to 16 carbon atoms; alkoxy; haloalkyl; alkoxyalkyl, wherein the alkoxy substituent thereof comprises a chain of carbon atoms including one or more oxygen ether atoms; or alkoxyalkoxy, wherein the alkoxy substituent thereof comprises a chain of carbon atoms including one or more oxygen ether atoms; R.sup.2 is alkyl of from 1 to 4 carbon atoms; each of R.sup.3 and R.sup.4 is alkylene; n is an integer 1 or 2; and W is alkyl of from 1 to 12 carbon atoms or fluoroalkyl of the formula ##STR2## wherein each of X, Y and Z is hydrogen or fluorine, m is zero or an integer from 1 to 6, and at least one of X, Y and Z is fluorine when m is zero.

    摘要翻译: 显示强电介质相并且在一定温度范围内表现出高自发极化值和近晶行为的液晶化合物具有下式:其中R 1为1至16个碳原子的烷基; 烷氧基 卤代烷基 烷氧基烷基,其中烷氧基取代基包括一个包含一个或多个氧原子的碳原子链; 或烷氧基烷氧基,其中烷氧基取代基包含一个包含一个或多个氧原子的碳原子链; R 2是1至4个碳原子的烷基; R 3和R 4各自为亚烷基; n是整数1或2; W为1〜12个碳原子的烷基或式“IMAGE”的氟代烷基,其中X,Y和Z各自为氢或氟,m为0或1〜6的整数,X, 当m为0时,Y和Z为氟。