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公开(公告)号：US5076962A
公开(公告)日：1991-12-31
申请号：US836749
申请日：1986-03-06
CPC分类号： C09K19/46 , C09K19/20 , C09K19/2021 , C09K19/22 , C09K19/48
摘要： A ferroelectric chiral smectic liquid crystal composition containing two kinds of chiral smectic liquid crystal compound is provided. One of the said compounds shows twist sense of helix of right-handed and the other show twist sense of helix of left-handed and the direction of spontaneous polarization of component chiral smectic liquid crystal compounds is the same. This composition provides a liquid crystal display element which shows very quick response.
摘要翻译： 提供含有两种手性近晶液晶化合物的铁电手性近晶液晶组合物。 所述化合物之一表现为右旋螺旋扭曲感，另一种显示左旋螺旋扭曲感和组分手性近晶液晶化合物自发极化的方向是相同的。 该组合物提供显示非常快速反应的液晶显示元件。
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公开(公告)号：US4090975A
公开(公告)日：1978-05-23
申请号：US700354
申请日：1976-06-28
CPC分类号： C09K19/48
摘要： Liquid crystal mixtures are disclosed which contain 30-60% of a Schiff's base nematic liquid crystal compound, 25-65% of a second nematic liquid crystal compound selected from the classes of azoxy, ester and biphenyl, and 5-15% of a triphenyl compound to raise the isotropic transition temperature. This combination results in liquid crystal compositions having unexpectedly wide nematic temperature ranges.
摘要翻译： 公开了含有30-60％希夫碱性向列型液晶化合物的液晶混合物，选自氧基，酯和联苯类的25-65％的第二向列型液晶化合物和5-15％的三苯基 化合物以提高各向同性转变温度。 这种组合导致具有意想不到的宽向列温度范围的液晶组合物。
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33.发明授权
公开(公告)号：US3965030A
公开(公告)日：1976-06-22
申请号：US278302
申请日：1972-08-07
申请人： Derick Jones , Sun Lu
发明人： Derick Jones , Sun Lu
CPC分类号： C09K19/48
摘要： A display device in which a thin layer of a lyotropic nematic mesomorphic composition is utilized to diffuse light from a source toward an observer by applying a suitable voltage, for example, 20 volts for one mil layer. One form of the device transmits light through the layer. A second form of the device uses light diffused and reflected to the observer. A preferred lyotropic nematic mesomorphic composition includes three compounds of the structural formulae: ##SPC1## ##SPC2##
摘要翻译： 一种显示装置，其中利用溶解性向列型介晶组合物的薄层，通过向一个密封层施加适当的电压，例如20伏，将光从源向观察者扩散。 设备的一种形式透过层透过光。 该装置的第二种形式使用漫射和反射到观察者的光。 优选的溶致向列型介晶组合物包括三种结构式的化合物：
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公开(公告)号：US3815972A
公开(公告)日：1974-06-11
申请号：US27913072
申请日：1972-08-09
申请人： OLIVETTI & CO SPA
发明人： HSIEH P
CPC分类号： C09K19/48
摘要： An improved orientation type liquid crystal display having a layer of a mixture of liquid crystal materials confined between a pair of substrates and electrodes for applying an electric field across the substrate. The mixture of liquid crystal materials includes between 5 and 60 percent by weight of an orientationtype liquid crystal material and between 95 and 45 percent by weight of a dynamic scattering type liquid crystal material.
摘要翻译： 一种改进的取向型液晶显示器，其具有限定在一对基板和用于在基板上施加电场的电极的液晶材料的混合物层。 液晶材料的混合物包含5至60重量％的取向型液晶材料和95至45重量％的动态散射型液晶材料。
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公开(公告)号：US3772210A
公开(公告)日：1973-11-13
申请号：US3772210D
申请日：1972-02-14
申请人： EASTMAN KODAK CO
发明人： LODOLINI M
CPC分类号： C09K19/48
摘要： A NEMATIC LIQUID CRYSTAL COMPOSITION HAVING A VERY BROAD MESOPHASE COMPRISING A MIXTURE OF AT LEAST ONE COMPOUND OF THE FORMULA:
(4-R-PHENYL)-CH=N-(1,4-PHENYLENE)-R1
WHEREIN R AND R1 ARE RADICALS SELECTED FROM THE GROUP CONSISTING OF A SATURATED ALKOXY RADICAL AND AN ALKYL RADICAL, EACH HAVING FROM 1 TO 9 CARBON ATOMS AND ONLY ONE OF R AND R1 IS ALKYL; AT LEAST ONE COMPOUND OF THE FORMULA:
(4-R2-PHENYL)-CH=N-(1,4-PHENYLENE)-R3
WHEREIN R2 AND R3 ARE RADICALS SELECTED FROM GROUP CONSISTING OF A SATURATED ALKOXY RADICAL HAVING FROM 1 TO 9 CARBON ATOMS AND A SATURATED ACYLOXY RADICAL HAVING FROM 2 TO 5 CARBON ATOMS, AND ONLY ONE OF R2 AND R3 IS AN ALKOXY RADICAL; AND AT LEAST ONE COMPOUND OF THE FORMULA:
(4-(R4-(COO)X-)PHENYL)-OOC-(1,4-PHENYLENE)-(OOC)Y-R5
WHEREIN R4 AND R5 ARE SATURATED ALKOXY RADICALS OF FROM 1 TO 9 CARBON ATOMS, ONE OF X AND Y IS 0 AND THE OTHER IS 1.-
公开(公告)号：US20130053533A1
公开(公告)日：2013-02-28
申请号：US13594912
申请日：2012-08-27
申请人： Kamlesh P. Nair , Steven D. Gray
发明人： Kamlesh P. Nair , Steven D. Gray
IPC分类号： C08G63/80 , C08G63/685
CPC分类号： C09K19/22 , C08K5/20 , C09K19/3086 , C09K19/322 , C09K19/3444 , C09K19/48 , C09K2019/0481
摘要： A method for forming a high molecular weight thermotropic liquid crystalline polymer is provided. The method includes melt polymerizing two or more monomers in the presence of a unique aromatic amide oligomer to form a prepolymer, and then solid-state polymerizing the prepolymer to achieve a target molecular weight. The present inventors have discovered that a unique aromatic amide oligomer can be employed to help increase the “low shear” complex viscosity of the resulting solid-state polymerized composition. This allows for the attainment of higher than conventional “low shear” complex viscosity values and/or a substantial reduction in the solid-state polymerization time needed to achieve a target complex viscosity. In addition, the oligomeric flow aid can also accelerate the extent to which the “high shear” melt viscosity is increased during solid-state polymerization, which may also contribute to a substantial reduction in the solid-state polymerization time needed to achieve a certain molecular weight.
摘要翻译： 提供了形成高分子量热致液晶聚合物的方法。 该方法包括在独特的芳族酰胺低聚物存在下熔融聚合两种或更多种单体以形成预聚物，然后使预聚物固相聚合以达到目标分子量。 本发明人已经发现，可以使用独特的芳族酰胺低聚物来帮助提高所得固态聚合组合物的低剪切复合物粘度。 这允许达到高于常规低剪切复合物粘度值和/或实现目标复合物粘度所需的固态聚合时间的显着降低。 此外，低聚流动助剂还可以加速在固态聚合期间高剪切熔体粘度增加的程度，这也可能导致实现一定分子量所需的固态聚合时间的显着降低。
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37.发明申请Method for Minimizing Process Disruptions During Formation of a Liquid Crystalline Polymer 审中-公开在液晶聚合物形成期间最小化工艺中断的方法公开(公告)号：US20130053531A1
公开(公告)日：2013-02-28
申请号：US13594903
申请日：2012-08-27
申请人： Kamlesh P. Nair , Steven D. Gray
发明人： Kamlesh P. Nair , Steven D. Gray
IPC分类号： C08G63/80
CPC分类号： C09K19/22 , C08K5/20 , C09K19/3086 , C09K19/322 , C09K19/3444 , C09K19/48 , C09K2019/0481 , C08L67/03
摘要： A method for lowering melt viscosity of a liquid crystalline polymer as it is formed in a reactor vessel. More particularly, a reaction mixture is initially supplied to the reactor vessel that contains two or more precursor monomers (e.g., acetylated or non-acetylated). The reaction mixture is heated to an elevated temperature under agitation to initiate formation of the polymer. After a certain period of time, an aromatic amide oligomer is added to the reaction mixture. Among other things, the present inventors have discovered that such an oligomer can serve as a flow aid by altering intermolecular polymer chain interactions, thereby lowering the overall viscosity of the polymer matrix under shear. This minimizes the likelihood of “freeze off” of the polymer within the reactor vessel and limits the impact of process disruptions on the production of the liquid crystalline polymer.
摘要翻译： 液晶聚合物在反应器容器中形成时的熔融粘度降低的方法。 更具体地，反应混合物最初被供应到含有两种或更多种前体单体（例如乙酰化或非乙酰化）的反应器容器中。 在搅拌下将反应混合物加热至高温以引发聚合物的形成。 经过一段时间后，向反应混合物中加入芳香族酰胺低聚物。 其中，本发明人发现，通过改变分子间聚合物链的相互作用，这样的低聚物可以作为流动助剂，从而降低聚合物基体在剪切下的总粘度。 这最小化在反应器容器内冻结聚合物的可能性，并限制了工艺中断对液晶聚合物生产的影响。
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公开(公告)号：US4931208A
公开(公告)日：1990-06-05
申请号：US227912
申请日：1988-08-03
CPC分类号： C09K19/42 , C09K19/0225 , C09K19/46 , C09K19/48
摘要： A ferroelectric liquid crystal composition having a long helical pitch and a light switching element having a quick response property are provided. This composition comprises (1) at least one member selected from the group consisting of liquid crystal compounds having a smectic C phase and no helical structure and liquid crystal compounds having only a nematic phase as a liquid crystal phase and no helical structure and (2) at least one chiral smectic liquid crystal compound.
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公开(公告)号：US4780241A
公开(公告)日：1988-10-25
申请号：US124588
申请日：1987-11-24
IPC分类号： C09K19/02 , C09K19/42 , C09K19/46 , C09K19/48 , C09K19/30 , C09K19/06 , C09K19/12 , G02F1/13
CPC分类号： C09K19/42 , C09K19/0225 , C09K19/46 , C09K19/48
摘要： A ferroelectric liquid crystal composition having a long helical pitch and a light switching element having a quick response property are provided. This composition comprises (1) at least one member selected from the group consisting of liquid crystal compounds having a smectic C phase and no helical structure and liquid crystal compounds having only a nematic phase as a liquid crystal phase and no helical structure and (2) at least one chiral smectic liquid crystal compounds.
摘要翻译： 提供具有长螺旋节距的铁电液晶组合物和具有快速响应特性的光开关元件。 该组合物包含（1）选自具有层状C相和无螺旋结构的液晶化合物中的至少一种和仅具有向列相作为液晶相的液晶化合物，并且不具有螺旋结构，（2） 至少一种手性近晶液晶化合物。
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公开(公告)号：US4576732A
公开(公告)日：1986-03-18
申请号：US555617
申请日：1983-11-28
申请人： Masato Isogai , Shintaroo Hattori , Kishiroo Iwasaki , Teruo Kitamura , Akio Mukoh , Takashi Inukai , Kenji Furukawa , Kanetsugu Terashima , Shinichi Saitoh
发明人： Masato Isogai , Shintaroo Hattori , Kishiroo Iwasaki , Teruo Kitamura , Akio Mukoh , Takashi Inukai , Kenji Furukawa , Kanetsugu Terashima , Shinichi Saitoh
IPC分类号： C09K19/12 , C09K19/20 , C09K19/22 , C09K19/48 , C09K19/60 , C07C69/76 , C07C69/88 , G02F1/13
CPC分类号： C09K19/2021 , C09K19/126 , C09K19/20 , C09K19/22 , C09K19/48 , C09K19/603
摘要： The present invention is characterized by a smectic liquid crystal compound represented by the following formula: ##STR1## wherein R is selected from alkyl and alkoxy groups; X from ##STR2## m and n are natural numbers; and R* is an optically active group containing an asymmetric carbon atom, and a liquid crystal composition containing said compound as a component. This compound is excellent in optical stability and high-speed response.
摘要翻译： 本发明的特征在于由下式表示的近晶型液晶化合物：其中R选自烷基和烷氧基; X从
+ TR m和n是自然数; R *是含有不对称碳原子的光学活性基团，以及含有上述化合物作为成分的液晶组合物。 该化合物的光学稳定性和高速响应性优异。
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