Preparation of metallic comonomers for polystyrene
    21.
    发明授权
    Preparation of metallic comonomers for polystyrene 有权
    制备聚苯乙烯的金属共聚单体

    公开(公告)号:US08829114B2

    公开(公告)日:2014-09-09

    申请号:US13306088

    申请日:2011-11-29

    IPC分类号: C08L33/02

    摘要: A method for making a polystyrene ionomer comprises: preparing a metallic comonomer within styrene monomer to form a reaction mixture; and placing the reaction mixture under conditions suitable for the formation of a polymer composition. The metallic comonomer can be a metal acrylate, formed by contacting a metal complex and an acrylate precursor.

    摘要翻译: 制备聚苯乙烯离聚物的方法包括:在苯乙烯单体内制备金属共聚单体以形成反应混合物; 并将反应混合物置于适于形成聚合物组合物的条件下。 金属共聚单体可以是通过使金属络合物和丙烯酸酯前体接触而形成的金属丙烯酸酯。

    Method and apparatus for higher dimensional modulation
    27.
    发明授权
    Method and apparatus for higher dimensional modulation 有权
    用于更高维度调制的方法和装置

    公开(公告)号:US06614861B1

    公开(公告)日:2003-09-02

    申请号:US09474497

    申请日:1999-12-29

    IPC分类号: H04B710

    摘要: An M-ary signal constellation within an N-dimensional space is defined, preferably such that each of the M symbols reside upon the surface of an N-dimensional sphere and such that a minimum distance between symbols is maximized. N orthogonal functions are used as the bases for representing the N-dimensional symbols for transmission. Orthogonal functions exhibiting orthogonality in frequency, time and/or space are also described for this purpose. Furthermore, conventional QAM symbol encoding may be used to represent the N-dimensional symbols, thereby facilitating the use of conventional modulation techniques. In this manner, higher dimensional modulation schemes may be realized.

    摘要翻译: 定义N维空间内的M元信号星座,优选地使得M个符号中的每一个驻留在N维球体的表面上,并且使得符号之间的最小距离最大化。 N个正交函数用作表示用于传输的N维符号的基础。 为此也描述了在频率,时间和/或空间中呈现正交性的正交函数。 此外,常规QAM符号编码可以用于表示N维符号,从而有助于使用常规调制技术。 以这种方式,可以实现更高维度的调制方案。

    Thermotropic liquid crystalline polymer with improved low shear viscosity
    28.
    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。

    High flow liquid crystalline polymer composition
    29.
    发明授权
    High flow liquid crystalline polymer composition 有权
    高流动性液晶聚合物组合物

    公开(公告)号:US09051514B2

    公开(公告)日:2015-06-09

    申请号:US13594900

    申请日:2012-08-27

    摘要: A liquid crystalline polymer composition that contains a liquid crystalline polymer and an aromatic amide oligomer is provided. The oligomer can serve as a flow aid by altering intermolecular polymer chain interactions, thereby lowering the overall viscosity of the polymer matrix under shear. The oligomer is also not easily volatized or decomposed during compounding, molding, and/or use, which minimizes off-gassing and the formation of blisters that would otherwise impact the final mechanical properties of a part made from the polymer composition. While providing the benefits noted, the aromatic amide oligomer does not generally react with the polymer backbone of the liquid crystalline polymer to any appreciable extent so that the mechanical properties of the polymer are not adversely impacted.

    摘要翻译: 提供含有液晶聚合物和芳香族酰胺低聚物的液晶聚合物组合物。 通过改变分子间聚合物链相互作用,低聚物可以用作流动助剂,从而降低聚合物基体在剪切下的总粘度。 低聚物在复合,模制和/或使用期间也不容易挥发或分解,这最小化气泡的脱气和形成,否则会影响由聚合物组合物制成的部件的最终机械性能。 在提供所提及的优点的同时,芳族酰胺低聚物通常不会与液晶聚合物的聚合物主链反应任何明显的程度,使得聚合物的机械性能不会受到不利影响。

    Aromatic amide compound
    30.
    发明授权
    Aromatic amide compound 有权
    芳香族酰胺化合物

    公开(公告)号:US08778221B2

    公开(公告)日:2014-07-15

    申请号:US13594916

    申请日:2012-08-27

    摘要: An aromatic amide compound having the following general formula (I) is provided: wherein, X1 and X2 are independently C(O)HN or NHC(O); G1, G2 and G3 are independently hydrogen, C(O)HN-phenyl, or NHC(O)-phenyl, wherein at least one of G1, G2 and G3 is C(O)HN-phenyl or NHC(O)-phenyl; Q1, Q2, and Q3 are independently hydrogen, C(O)HN-phenyl, or NHC(O)-phenyl, wherein at least one of Q1, Q2, and Q3 is C(O)HN-phenyl or NHC(O)-phenyl; R5 is halo, haloalkyl, alkyl, alkenyl, aryl, heteroaryl, cycloalkyl, or heterocyclyl; and m is from 0 to 4.

    摘要翻译: 提供具有以下通式(I)的芳族酰胺化合物:其中,X 1和X 2独立地为C(O)HN或NHC(O); G1,G2和G3独立地是氢,C(O)HN-苯基或NHC(O) - 苯基,其中G1,G2和G3中的至少一个是C(O)HN-苯基或NHC(O) ; Q1,Q2和Q3独立地是氢,C(O)HN-苯基或NHC(O) - 苯基,其中Q1,Q2和Q3中的至少一个是C(O)HN-苯基或NHC(O) 苯基; R5是卤素,卤代烷基,烷基,烯基,芳基,杂芳基,环烷基或杂环基; m为0〜4。