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    • 42. 发明申请
    • Melt-Extruded Substrate for Use in Thermoformed Articles
    • 熔融挤出基材用于热成型制品
    • US20130052446A1
    • 2013-02-28
    • US13594919
    • 2012-08-27
    • Kamlesh P. NairSteven D. GrayCamilo Cano
    • Kamlesh P. NairSteven D. GrayCamilo Cano
    • C09K19/38B29C43/24
    • C09K19/22C08K5/20C09K19/3086C09K19/322C09K19/3444C09K19/48C09K2019/0481
    • A melt-extruded substrate that can be readily thermoformed into a shaped, three-dimensional article is provided. The substrate is formed from a polymer composition that contains a thermotropic liquid crystalline polymer and a unique aromatic amide oligomer. The present inventors have discovered that the oligomer can help increase the “low shear” complex viscosity of the resulting polymer. The ability to achieve enhanced low shear viscosity values can lead to polymer compositions with an increased melt strength, which allows the resulting substrate to better maintain its shape during thermoforming without exhibiting a substantial amount of sag. Due to its relatively high degree of melt strength, the polymer composition is particularly well suited for forming thin extruded substrates for use in thermoforming processes.
    • 提供了可以容易地热成型为成型的三维制品的熔融挤出基材。 基材由含有热致液晶聚合物和独特芳族酰胺低聚物的聚合物组合物形成。 本发明人已经发现,低聚物可以帮助提高所得聚合物的低剪切复合物粘度。 获得增强的低剪切粘度值的能力可以导致具有增加的熔体强度的聚合物组合物,这允许所得到的基材在热成型期间更好地保持其形状而不显示大量的下垂。 由于其熔体强度相对较高,聚合物组合物特别适用于形成用于热成型工艺的薄的挤出基材。
    • 48. 发明授权
    • Mobile station control states based on available power
    • 基于可用功率的移动台控制状态
    • US06275712B1
    • 2001-08-14
    • US09259080
    • 1999-02-26
    • Steven D. GrayGeorge Fry
    • Steven D. GrayGeorge Fry
    • H04Q720
    • H04W52/0261H04B1/40H04W76/27Y02D70/40
    • A mobile station is transitioned between control states in a telecommunications system based on available power at the mobile station. In an embodiment, a mobile station signals the system to indicate that power available to the mobile station is less than or greater than a predetermined threshold and that timers for controlling transitions between packet data service control states are adjusted accordingly. If power is below the predetermined threshold, the time period durations of transition timers for control states that require higher mobile station power can be reduced. The mobile station will then spend less time in those control states, thereby conserving battery power.
    • 基于移动站的可用功率,移动站在电信系统中的控制状态之间转换。 在一个实施例中,移动站发信号通知系统以指示移动站可用的功率小于或大于预定阈值,并且相应地调整用于控制分组数据业务控制状态之间的转换的定时器。 如果功率低于预定阈值,则可以减少需要更高移动台功率的控制状态的转换定时器的时间段持续时间。 移动台将在这些控制状态下花费更少的时间,从而节省电池电量。
    • 50. 发明申请
    • Solid-State Polymerization of a Liquid Crystalline Polymer
    • 液晶聚合物的固态聚合
    • US20130053533A1
    • 2013-02-28
    • US13594912
    • 2012-08-27
    • Kamlesh P. NairSteven D. Gray
    • Kamlesh P. NairSteven D. Gray
    • C08G63/80C08G63/685
    • C09K19/22C08K5/20C09K19/3086C09K19/322C09K19/3444C09K19/48C09K2019/0481
    • 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.
    • 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。