公开(公告)号：US09074133B2

公开(公告)日：2015-07-07

申请号：US13594910

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： C09K19/22 ,  C09K19/38 ,  C09K19/34 ,  C09K19/32 ,  C09K19/30 ,  C08L77/12 ,  C09K19/48 ,  C09K19/04

CPC分类号： C09K19/22 ,  C08L77/12 ,  C09K19/3086 ,  C09K19/322 ,  C09K19/3444 ,  C09K19/3809 ,  C09K19/48 ,  C09K2019/0481 ,  C08L77/10

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。

公开(公告)号：US09051514B2

公开(公告)日：2015-06-09

申请号：US13594900

申请日：2012-08-27

申请人： Kamlesh P. Nair ,  Joseph J. Grenci ,  Sayanti Basu ,  Steven D. Gray

发明人： Kamlesh P. Nair ,  Joseph J. Grenci ,  Sayanti Basu ,  Steven D. Gray

IPC分类号： C09K19/54 ,  C09K19/32 ,  C09K19/30 ,  C08L77/12 ,  C09K19/38 ,  C09K19/22 ,  C09K19/34 ,  C09K19/48 ,  C09K19/04

CPC分类号： C09K19/22 ,  C08L77/12 ,  C09K19/3086 ,  C09K19/322 ,  C09K19/3444 ,  C09K19/3809 ,  C09K19/48 ,  C09K2019/0481

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。

公开(公告)号：US20130062558A1

公开(公告)日：2013-03-14

申请号：US13594923

申请日：2012-08-27

申请人： Kamlesh P. Nair ,  Steven D. Gray ,  Joseph J. Grenci

发明人： Kamlesh P. Nair ,  Steven D. Gray ,  Joseph J. Grenci

IPC分类号： C09K19/54 ,  B29C39/00

CPC分类号： C09K19/54 ,  B29C39/006 ,  C08K5/20 ,  C08K5/34922 ,  C08L77/12 ,  C09K19/22 ,  C09K19/3086 ,  C09K19/322 ,  C09K19/3444 ,  C09K19/48 ,  C09K2019/0481

摘要： A molded part having a predetermined shape is provided. The molded part may be formed by casting a liquid crystalline polymer composition into a mold cavity at a relatively low shear rate. Due to the use of a relatively low shear rate, the polymer composition does not generally undergo extensive shear orientation, which can allow the resulting part to be further processed using standard finishing techniques. The ability to use relatively low shear rates during casting is achieved in the present invention through the use of an aromatic amide oligomer. More particularly, the present inventors have discovered that the aromatic amide oligomer can serve as a flow aid by altering intermolecular polymer chain interactions, thereby lowering the overall viscosity of the polymer matrix to “ultralow” levels without having a significant impact on the mechanical properties.

摘要翻译： 提供具有预定形状的模制件。 模制部件可以通过将液晶聚合物组合物以相对低的剪切速率浇铸到模腔中而形成。 由于使用相对低的剪切速率，聚合物组合物通常不经受广泛的剪切取向，这可以允许使用标准精整技术进一步处理所得到的部分。 在本发明中通过使用芳族酰胺低聚物实现了在铸造过程中使用相对低的剪切速率的能力。 更具体地，本发明人已经发现，通过改变分子间聚合物链相互作用，芳族酰胺低聚物可以用作流动助剂，从而将聚合物基体的总体粘度降低到超低水平，而不会对机械性能产生显着的影响。

公开(公告)号：US20130048910A1

公开(公告)日：2013-02-28

申请号：US13594910

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： C09K19/54

CPC分类号： C09K19/22 ,  C08L77/12 ,  C09K19/3086 ,  C09K19/322 ,  C09K19/3444 ,  C09K19/3809 ,  C09K19/48 ,  C09K2019/0481 ,  C08L77/10

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，其可有助于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丧失其物理完整性。 尽管具有相对较高的低剪切粘度，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率通常非常高，例如在约50至约1000的范围内。

公开(公告)号：US4643842A

公开(公告)日：1987-02-17

申请号：US716956

申请日：1985-03-28

申请人： Masaaki Taguchi ,  Hitoshi Suenaga

发明人： Masaaki Taguchi ,  Hitoshi Suenaga

IPC分类号： C09K19/20 ,  C09K19/22 ,  C09K19/48 ,  G02F1/13 ,  C09K19/46

CPC分类号： C09K19/22 ,  C09K19/2007 ,  C09K19/48

摘要： A liquid crystal composition comprising at least one optically active liquid crystal compound represented by the following general formula: ##STR1## wherein R.sub.2 stands for a linear alkyl group and R.sub.1 * stands for an alkoxy or acyloxy group having an asymmetric carbon atom,and at least one optically active liquid crystal compound represented by the following general formula: ##STR2## wherein R.sub.3 * stands for an alkyl group having an asymmetric carbon atom and R.sub.4 stands for a linear alkyl group.

摘要翻译： 一种液晶组合物，其包含至少一种由以下通式表示的光学活性液晶化合物：其中R2表示直链烷基，R1 *表示具有不对称碳原子的烷氧基或酰氧基 以及由以下通式表示的至少一种光学活性液晶化合物：其中R3 *表示具有不对称碳原子的烷基，R4表示直链烷基。

公开(公告)号：US3981558A

公开(公告)日：1976-09-21

申请号：US415200

申请日：1973-11-12

申请人： Chan Soo Oh ,  Paul Y. Hsieh

发明人： Chan Soo Oh ,  Paul Y. Hsieh

IPC分类号： C09K19/48 ,  C09K3/34 ,  G02F1/13

CPC分类号： C09K19/48

摘要： An electro-optical display, utilizing the field effect display, includes a thin layer of liquid crystal material positioned between two plates having electrically conductive segments. The material is a mixture of a selected stilbene, such as trans-4-n-butyl-alpha-chloro-4'-ethoxystilbene and a selected substituted benzylideneaminobenzonitrile, such as p-ethoxy-benzylidene-p'-aminobenzonitrile.

摘要翻译： 使用场效应显示器的电光显示器包括位于具有导电段的两个板之间的薄层液晶材料。 该物质是选择的二苯乙烯的混合物，例如反式-4-正丁基-α-氯-4'-乙氧基茋和选择的取代的亚苄基氨基苄腈，例如对乙氧基 - 亚苄基-p'-氨基苄腈。

公开(公告)号：US3772209A

公开(公告)日：1973-11-13

申请号：US3772209D

申请日：1972-01-21

申请人： EASTMAN KODAK CO

发明人： BATESKY D

IPC分类号： C09K19/48 ,  G02F1/13 ,  G01N33/00

CPC分类号： C09K19/48

摘要： A NEMATIC LIQUID CRYSTAL COMPOSITION HAVING A VERY BROAD MESOPHASE COMPRISING A MIXTURE OF AT LEAST TOW COMPOUNDS OF THE FORMULA:

(4-R-PHENYL)-CH=N-(1,4-PHENYLENE)-R1

WHEREIN EACH R AND R1 ARE RADICALS SELECTED FROM THE GROUP CONSISTING OF A SATRUATED ALKOXY RADICAL AND AN ALKYL RADICAL EACH HAVING FROM 1 TO 9 CARBON ATOMS AND ONLY ONE OF EACH R AND R1 IS ALKYL, AND AT LEAST ONE COMPOUND OF THE FORMULA:

(4-(R2-(COO)X-)PHENYL)-OOC-(1,4-PHENYLENE)-(OOC)Y-R3

WHEREIN R2 AND R3 ARESATURATED ALKOXY RADICALS OF FROM 1 TO 9 CARBON ATOMS, ONE OF X AND Y IS O AND THE OTHER IS 1.

公开(公告)号：US08906258B2

公开(公告)日：2014-12-09

申请号：US13594904

申请日：2012-08-27

申请人： Steven D. Gray ,  Kamlesh P. Nair ,  Joseph J. Grenci

发明人： Steven D. Gray ,  Kamlesh P. Nair ,  Joseph J. Grenci

IPC分类号： C09K19/38 ,  C09K19/22 ,  C09K19/30 ,  C09K19/32 ,  C09K19/34 ,  C09K19/20 ,  C09K19/12 ,  C09K19/48 ,  C09K19/04

CPC分类号： C09K19/22 ,  C09K19/3086 ,  C09K19/322 ,  C09K19/3444 ,  C09K19/48 ,  C09K2019/0481

摘要： A thermotropic liquid crystalline polymer composition capable of exhibiting both a low melting temperature and good heat resistance without the use of conventional naphthenic acids is provided. The melting temperature may, for example, range from about 250° C. to about 400° C. Even at such low melting temperatures, the present inventors have surprisingly discovered that the ratio of the deflection temperature under load (“DTUL”), a measure of short term heat resistance, to the melting temperature may remain relatively high. The specific DTUL values may range from about 200° C. to about 300° C. The ability to form a polymer composition with the properties noted above may be achieved, at least in part, by the use of an aromatic amide oligomer.

摘要翻译： 本发明提供能够不使用常规环烷酸而具有低熔点和良好耐热性的热致液晶聚合物组合物。 熔融温度例如可以在约250℃至约400℃的范围内。即使在这样的低熔点温度下，本发明人惊奇地发现，负载下的挠曲温度（“DTUL”）， 测量短期耐热性，对熔化温度可能保持较高。 特定的DTUL值可以在约200℃至约300℃的范围内。形成具有上述性质的聚合物组合物的能力可以至少部分地通过使用芳族酰胺低聚物来实现。

公开(公告)号：US20130048909A1

公开(公告)日：2013-02-28

申请号：US13594905

申请日：2012-08-27

申请人： Kamlesh P. Nair ,  Joseph J. Grenci ,  Steven D. Gray

发明人： Kamlesh P. Nair ,  Joseph J. Grenci ,  Steven D. Gray

IPC分类号： C09K19/54

CPC分类号： C09K19/22 ,  C08L77/12 ,  C09K19/3086 ,  C09K19/322 ,  C09K19/3444 ,  C09K19/3809 ,  C09K19/48 ,  C09K2019/0481

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.

公开(公告)号：US4867903A

公开(公告)日：1989-09-19

申请号：US22928

申请日：1987-03-06

申请人： Hiroyuki Nohira ,  Masanao Kamei ,  Shinichi Nakamura ,  Kazuharu Katagiri

发明人： Hiroyuki Nohira ,  Masanao Kamei ,  Shinichi Nakamura ,  Kazuharu Katagiri

IPC分类号： C07C69/773 ,  C07D239/26 ,  C09K19/06 ,  C09K19/12 ,  C09K19/20 ,  C09K19/34 ,  C09K19/46 ,  C09K19/48

CPC分类号： C07D239/26 ,  C09K19/06 ,  C09K19/126 ,  C09K19/2021 ,  C09K19/3463 ,  C09K19/46 ,  C09K19/48

摘要： A fluoroalkane derivative represented by the formula: ##STR1## wherein R denotes an alkyl group having 1-16 carbon atoms, C* denotes an asymmetric carbon atom, R.sup.1 denotes an alkyl or alkoxy group having 1-16 carbon atoms; ##STR2## respectively denote a phenylene group ##STR3## a cyclohexylene group ##STR4## or a pyrimidinylene group ##STR5## p is 0 or 1, q is 0 or 1 when p is 1, r is 0 or 1; and l, m and n are respectively 0 or a positive integer satisfying the relationship of l+m+n.gtoreq.1. The fluoroalkane derivative has a fluorine atom providing a large dipole moment and directly connected to an asymmetric carbon atom, so that it provides a high speed responsive characteristic through an increased spontaneous polarization when contained in a liquid crystal composition, especially a ferroelectric liquid crystal composition.

摘要翻译： 由下式表示的氟烷烃衍生物：其中R表示具有1-16个碳原子的烷基，C *表示不对称碳原子，R1表示具有1-16个碳原子的烷基或烷氧基; 分别表示亚苯基“亚甲基”或“嘧啶基”，p为0或1，当p为1时，q为0或1，r为0或1; l，m和n分别为0或满足l + m + n> / = 1的关系的正整数。 氟烷烃衍生物具有提供大的偶极矩并直接连接到不对称碳原子的氟原子，从而当包含在液晶组合物，特别是铁电液晶组合物中时，通过增加的自发极化提供高速响应特性。