PIPERIDINE DERIVATIVE, LIQUID CRYSTAL COMPOSITION, AND LIQUID CRYSTAL DISPLAY ELEMENT

    公开(公告)号:US20190194542A1

    公开(公告)日:2019-06-27

    申请号:US16231953

    申请日:2018-12-25

    IPC分类号: C09K19/34

    CPC分类号: C09K19/3444

    摘要: To provide a compound having an effect of preventing photodegradation of a liquid crystal composition and high solubility in a liquid crystal composition, a liquid crystal composition containing the compound, and a liquid crystal display element containing the composition.There are provided a compound represented by M(Z-Q)m, a liquid crystal composition containing the compound, and a liquid crystal display element using the composition. Here, m is 3, 4, or 5; M is a trivalent, tetravalent, or pentavalent cyclic group, an organic group, or a group constituted by trivalent nitrogen; Z is a single bond, —O—, —COO—, or —OCO—; and Q is a monovalent group represented by Formula (Q-1): in Formula (Q-1), Ra is a hydrogen atom, —O—, —OII, an alkyl group, or an alkenyl group, a terminal group (—CH3) is optionally substituted with —NIIR2 or —NR3R4, and here R3 and R4 are an alkyl group.

    STABILIZER COMPOUND, LIQUID CRYSTAL COMPOSITION, AND DISPLAY DEVICE

    公开(公告)号:US20180223188A1

    公开(公告)日:2018-08-09

    申请号:US15580090

    申请日:2016-06-23

    申请人: DIC Corporation

    IPC分类号: C09K19/54 C07D211/46

    摘要: Provided are a compound represented by general formula (I), a liquid crystal composition that uses the compound, and a liquid crystal display device that uses the liquid crystal composition. Adding the compound represented by general formula (I) to a liquid crystal composition can prevent degradation of the liquid crystal composition by light, heat, etc. The compound represented by general formula (I) dissolves well in the liquid crystal composition. Thus, when the compound represented by general formula (I) is used, a liquid crystal composition having both low viscosity (η) and high reliability can be prepared, and a high-speed response liquid crystal display device can be provided.

    Thermotropic liquid crystalline polymer with improved low shear viscosity
    10.
    发明授权
    Thermotropic liquid crystalline polymer with improved low shear viscosity 有权
    具有改进的低剪切粘度的热致变液晶聚合物

    公开(公告)号:US09074133B2

    公开(公告)日:2015-07-07

    申请号:US13594910

    申请日:2012-08-27

    摘要: A thermotropic liquid crystalline polymer melt polymerized in the presence of a viscosity modifier that can help increase the “low shear” viscosity of the resulting composition is provided. The increased “low shear” viscosity can minimize drooling of the polymer composition during processing and also allow it to possess a greater melt strength, which facilitates its ability to be processed in a wide variety of applications without losing its physical integrity. Despite having a relatively high “low shear” viscosity, the present inventors have discovered that the viscosity modifier does not substantially increase the “high shear” melt viscosity of the polymer composition. In this regard, the ratio of the “low shear” viscosity to the melt viscosity is generally very high, such as within a range of from about 50 to about 1000.

    摘要翻译: 提供了在粘度调节剂存在下熔融聚合的热致液晶聚合物,其可以帮助提高所得组合物的“低剪切”粘度。 增加的“低剪切”粘度可以最小化加工过程中聚合物组合物的流失,并且还允许其具有更大的熔体强度,这有助于其在各种应用中被处理的能力而不损失其物理完整性。 尽管具有相对高的“低剪切”粘度,但是本发明人已经发现,粘度调节剂基本上不增加聚合物组合物的“高剪切”熔体粘度。 在这方面,“低剪切”粘度与熔体粘度的比例通常非常高,例如在约50至约1000的范围内。