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    Polyolefin composition having reduced color bodies
    52.
    发明授权
    Polyolefin composition having reduced color bodies 失效
    聚烯烃组合物具有降低的着色体

    公开(公告)号：US06846859B2

    公开(公告)日：2005-01-25

    申请号：US10160462

    申请日：2002-05-31

    Applicant: Tim J. Coffy ,  Steven D. Gray ,  Gerhard K. Guenther

    Inventor： Tim J. Coffy ,  Steven D. Gray ,  Gerhard K. Guenther

    IPC: C08K5/134 ,  C08K5/526 ,  C08L5/52

    CPC classification number: C08K5/1345 ,  C08K5/526 ,  C08K2201/014 ,  C08L23/02

    Abstract: The present invention includes a polyolefin composition having reduced coloration with aging. The polyolefin composition comprises at least one polyolefin, an effective amount of a primary phenolic antioxidant to promote long term thermal stability of the polymer composition, and an effective amount of a phosphite processing stabilizer to promote thermal stability of the polymer composition during melt processing. The polymer composition further comprises an effective amount of a sacrificial phosphite antioxidant to reduce the yellowness index of the polymer composition. The sacrificial phosphite antioxidant and the phosphite processing stabilizer are not the same compound.

    Abstract translation: 本发明包括随着老化而着色度降低的聚烯烃组合物。 聚烯烃组合物包含至少一种聚烯烃，有效量的初级酚类抗氧化剂以促进聚合物组合物的长期热稳定性，以及有效量的亚磷酸酯加工稳定剂，以促进熔融加工期间聚合物组合物的热稳定性。 聚合物组合物还包含有效量的牺牲亚磷酸酯抗氧化剂以降低聚合物组合物的黄度指数。 牺牲亚磷酸酯抗氧化剂和亚磷酸酯加工稳定剂是不同的化合物。

    Melt Polymerization of Low Melt Viscosity Liquid Crystalline Polymers
    54.
    发明申请
    Melt Polymerization of Low Melt Viscosity Liquid Crystalline Polymers 有权
    低熔点粘度液晶聚合物的熔融聚合

    公开(公告)号：US20130053532A1

    公开(公告)日：2013-02-28

    申请号：US13594901

    申请日：2012-08-27

    Applicant: Kamlesh P. Nair ,  Steven D. Gray

    Inventor： Kamlesh P. Nair ,  Steven D. Gray

    IPC: C08G69/44

    CPC classification number: C09K19/22 ,  C08K5/20 ,  C09K19/3086 ,  C09K19/322 ,  C09K19/3444 ,  C09K19/48 ,  C09K2019/0481 ,  C08L67/03

    Abstract: A method for forming a high molecular weight liquid crystalline polymer is provided. The method include melt polymerizing two or more precursor monomers (e.g., acetylated or non-acetylated) in the presence of an aromatic amide oligomer. The present inventors have discovered that such an oligomer can lower the melt viscosity of the viscous polymer as it is formed. The ability to lower melt viscosity in situ during melt polymerization enables the formation of high molecular weight polymers that display low melt viscosity and can still be removed from the reactor vessel without solidifying therein. This not only improves the ease of processing, but also allows molecular weights to be reached that are even higher than conventionally practical.

    Abstract translation: 提供了形成高分子量液晶聚合物的方法。 该方法包括在芳族酰胺低聚物存在下熔融聚合两种或更多种前体单体（例如乙酰化或非乙酰化的）。 本发明人已经发现，这种低聚物可以降低粘稠聚合物形成时的熔体粘度。 在熔融聚合期间降低熔融粘度的能力使得能够形成显示低熔体粘度的高分子量聚合物，并且仍然可以从反应器容器中除去而不在其中固化。 这不仅提高了加工的容易性，而且还使达到甚至高于传统实际的分子量。

    High Flow Liquid Crystalline Polymer Composition
    55.
    发明申请
    High Flow Liquid Crystalline Polymer Composition 有权
    高流动液晶聚合物组合物

    公开(公告)号：US20130048914A1

    公开(公告)日：2013-02-28

    申请号：US13594900

    申请日：2012-08-27

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

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

    IPC: C09K19/42

    CPC classification number: C09K19/22 ,  C08L77/12 ,  C09K19/3086 ,  C09K19/322 ,  C09K19/3444 ,  C09K19/3809 ,  C09K19/48 ,  C09K2019/0481

    Abstract: 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.

    Abstract translation: 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
    56.
    发明申请
    Aromatic Amide Compound 有权
    芳香族酰胺化合物

    公开(公告)号：US20130048911A1

    公开(公告)日：2013-02-28

    申请号：US13594916

    申请日：2012-08-27

    Applicant: Kamlesh P. Nair ,  Steven D. Gray

    Inventor： Kamlesh P. Nair ,  Steven D. Gray

    IPC: C07C235/84 ,  C09K19/54 ,  C07C241/04 ,  C07C231/02 ,  C07C243/38

    CPC classification number: C07C233/80 ,  C07C231/02 ,  C08K5/20 ,  C08L77/12 ,  C09K19/22 ,  C09K19/38 ,  C09K19/54 ,  C09K2019/0481

    Abstract: 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.

    Abstract translation: 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。

    Heat-Resistant Liquid Crystalline Polymer Composition having a Low Melting Temperature
    57.
    发明申请
    Heat-Resistant Liquid Crystalline Polymer Composition having a Low Melting Temperature 有权
    具有低熔融温度的耐热液晶聚合物组合物

    公开(公告)号：US20130048908A1

    公开(公告)日：2013-02-28

    申请号：US13594904

    申请日：2012-08-27

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

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

    IPC: C09K19/54 ,  C09K19/38 ,  C08G69/44

    CPC classification number: C09K19/22 ,  C09K19/3086 ,  C09K19/322 ,  C09K19/3444 ,  C09K19/48 ,  C09K2019/0481

    Abstract: 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.

    Abstract translation: 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）的比例 短期耐热性，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。

    Bimodal polyethylene resins that have high stiffness and high ESCR
    58.
    发明授权
    Bimodal polyethylene resins that have high stiffness and high ESCR 有权
    具有高刚度和高ESCR的双峰聚乙烯树脂

    公开(公告)号：US08138264B2

    公开(公告)日：2012-03-20

    申请号：US11744596

    申请日：2007-05-04

    Applicant: Tim J. Coffy ,  Gerhard Guenther ,  Steven D. Gray

    Inventor： Tim J. Coffy ,  Gerhard Guenther ,  Steven D. Gray

    IPC: C08F4/642 ,  C08F210/16

    CPC classification number: C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08F4/6555 ,  C08F2/001 ,  C08F2500/05 ,  C08F2500/13 ,  C08F2500/07 ,  C08F2500/11 ,  C08F2500/12 ,  C08F210/08

    Abstract: A bimodal polyethylene having a high density ranging from about 0.955 to about 0.959 g/cc, an improved environmental stress cracking resistance (ESCR) of from about 400 to about 2500 hours, and an improved 0.4% flexural modulus of from about 180,000 to about 260,000 psi (1,200 MPa to about 1,800 MPa) may be formed using a Ziegler-Natta polymerization catalyst using two reactors in series. The bimodal polyethylene may have a high load melt index (HLMI) of from about 2 and about 30 dg/min and may be optionally made with a small amount of alpha-olefinic comonomer in the second reactor. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

    Abstract translation: 具有约0.955至约0.959g / cc的高密度的双峰聚乙烯，约400至约2500小时的改进的耐环境应力开裂性（ESCR）和约180,000至约260,000的改善的0.4％挠曲模量 可以使用串联的两个反应器的齐格勒 - 纳塔聚合催化剂形成psi（1200MPa至约1800MPa）。 双峰聚乙烯可以具有约2和约30dg / min的高负载熔体指数（HLMI），并且可以任选地在第二反应器中用少量的α-烯烃共聚单体制备。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。

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