会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明公开
    • Homeotropically oriented liquid crystalline polymer film comprising dichroic dye
    • Homootrop orientierterFlüssigkristallpolymerfilm,der einen dichroitischen Farbstoffenthält。
    • EP0608924A1
    • 1994-08-03
    • EP94200065.4
    • 1994-01-13
    • Akzo Nobel N.V.
    • Picken, Stephen James
    • G11B7/24G11B7/00C09K19/38G02F1/1333
    • C09K19/60C09K19/38C09K19/3838C09K19/3885C09K2219/03G02F1/133365G02F1/13725G02F2001/133742G11B7/00555G11B7/25
    • The invention pertains to a homeotropically oriented liquid crystalline polymer film comprising at least one dichroic dye. This homeotropic orientation along with the presence of dichroic dye makes it possible to employ a different technique for writing out and reading data.
      For, in this case contrast is obtained by the dichroic dye contained in the film being aligned in the same direction as the mesogenic groups of the liquid crystalline polymer. In a virgin film the mesogenic groups, and hence the dichroic dye molecules, are oriented perpendicular to the film's surface, and there is only low absorption of the incident light by these molecules. By local heating or irradiation of the film (e.g., with a laser) the homeotropic orientation is converted to an isotropic one. In the case of an isotropically written trace, the dichroic dye will likewise be isotropically oriented, resulting in a substantially higher absorption of the incident light.
      The films according to the invention are suitable for use in analogue and digital optical data storage, as well as, of course, combined analogue/digital data storage.
    • 本发明涉及包含至少一种二色染料的垂直取向的液晶聚合物膜。 这种垂直取向以及二色性染料的存在使得可以采用不同的写入和读取数据的技术。 因为在这种情况下,通过包含在膜中的二色性染料在与液晶聚合物的介晶基团相同的方向上排列而获得对比度。 在原始膜中,介晶基团以及因此的二色性染料分子垂直于膜的表面定向,并且这些分子仅存在入射光的低吸收。 通过局部加热或照射膜(例如用激光),将垂直取向转变为各向同性取向。 在各向同性写入的迹线的情况下,二色性染料同样将各向同性取向,导致入射光的吸收显着更高。 根据本发明的胶片适用于模拟和数字光学数据存储以及当然的组合的模拟/数字数据存储。
    • 3. 发明公开
    • Polyurethanes prepared from liquid crystal-contaning polyols and process for preparing the same
    • Polyurethane ausflüssigkristallhaltigenPolyolen und Verfahren zu ihrer Herstellung。
    • EP0260388A2
    • 1988-03-23
    • EP87109114.6
    • 1987-06-24
    • THE DOW CHEMICAL COMPANY
    • Thomas, Comman P.Turner, Robert Burton
    • C09K19/38C08G18/48C08G18/40C08L75/02C08L75/08C08J3/11
    • C08J9/0061C08G18/635C08G18/638C08G18/8116C08G2250/00C08J2375/04C08L75/00C09K19/3885C08L33/00C08L2666/04
    • This invention is a solution or dispersion of a liquid crystalline polymer characterized by having a polymer backbone to which are attached a plurality of pendant liquid crystalline moieties in an active hydrogen-containing compound having at least two active hydrogen-containing moieties.
      In another aspect, this invention is a polyurethane and/or polyurea polymer prepared by reacting a polyisocyanate with a solution or dispersion of a liquid crystalline polymer characterized by having a polymer backbone to which are attached a plurality of pendant liquid crystalline moieties in an active hydrogen-containing compound having at least two active hydrogen-containing moieties.
      The inclusion of a liquid crystalline polymer in an active hydrogen-containing compound has surprisingly been found to yield significant and unexpected improvements in the physical properties of polyurethane and/or polyurea polymers prepared therefrom. In particular, cellular polurethane and/or polureas made from these solutions have excellent firmness and high moduli.
    • 本发明是液晶聚合物的溶液或分散体,其特征在于具有聚合物主链,多个侧链液晶部分连接在具有至少两个含活性氢基团的活性含氢化合物中。 在另一方面,本发明是通过使多异氰酸酯与液晶聚合物的溶液或分散体反应而制备的聚氨酯和/或聚脲聚合物,其特征在于具有聚合物主链,多个侧链液晶部分连接在活性氢 含有至少两个含活性氢的部分的化合物。 令人惊讶地发现,含有活性氢的化合物中的液晶聚合物包含由其制备的聚氨酯和/或聚脲聚合物的物理性能的显着和意想不到的改进。 特别地,由这些溶液制成的蜂窝状聚氨酯和/或聚脲具有优异的硬度和高模量。