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17 条记录 (耗时 0.037 秒)

    Nylon 6 or 66 based compositions and films formed therefrom having reduced curl
    4.
    发明授权
    Nylon 6 or 66 based compositions and films formed therefrom having reduced curl 失效
    尼龙6或66基组合物和由其形成的膜具有减小的卷曲

    公开(公告)号：US6040392A

    公开(公告)日：2000-03-21

    申请号：US38201

    申请日：1998-03-10

    申请人： Yash P. Khanna ,  Frank H. Puterbuagh, Jr. ,  William P. Kuhn ,  Martin J. Schena

    发明人： Yash P. Khanna ,  Frank H. Puterbuagh, Jr. ,  William P. Kuhn ,  Martin J. Schena

    IPC分类号： B32B27/08 ,  B32B27/34 ,  C08L77/00 ,  C08L77/02 ,  C08L77/06

    CPC分类号： C08L77/00 ,  B32B27/08 ,  B32B27/34 ,  C08L77/02 ,  C08L77/06 ,  Y10T428/31743 ,  Y10T428/31746

    摘要： Super-miscible blends of nylon copolymers are provided as well as multilayered film structures made therefrom. A nylon composition is a substantially uniform blend of at least one semi-crystalline copolymer I and at least one semi-crystalline copolymer II, wherein the proportion by weight of each of copolymer I and copolymer II. The nylon compositions are extremely uniform, and have only a single melting point rather than individual melting points of the component nylon copolymer parts. Coextruded films of a layer of this nylon composition with an olefin containing polymer are suitable for use as barrier films, such as aroma barrier films, which have reduced curl.

    摘要翻译： 提供了尼龙共聚物的超混溶混合物以及由其制成的多层膜结构。 尼龙组合物是至少一种半结晶共聚物I和至少一种半结晶共聚物II的基本均匀的共混物，其中共聚物I和共聚物II各自的重量比。 尼龙组合物非常均匀，并且仅具有单一熔点而不是组分尼龙共聚物部分的单个熔点。 这种尼龙组合物与含烯烃聚合物的层的共挤出膜适合用作具有降低的卷曲的阻隔膜，例如芳香阻隔膜。

    Process for improving the properties of polymers
    5.
    发明授权
    Process for improving the properties of polymers 失效
    提高聚合物性能的方法

    公开(公告)号：US5091508A

    公开(公告)日：1992-02-25

    申请号：US700102

    申请日：1991-05-08

    申请人： Yash P. Khanna ,  Annemarie C. Reimschuessel

    发明人： Yash P. Khanna ,  Annemarie C. Reimschuessel

    IPC分类号： C08J3/00 ,  C08J3/12

    CPC分类号： C08J3/12 ,  C08J3/00 ,  C08J2367/02 ,  C08J2377/00

    摘要： This invention relates to a process of modifying the crystallization temperature (T.sub.cc) of polymers, such as polyesters or polyamides, the polymers produced by this process and the molding compositions containing these polymers. The process comprises cooling a polymer to a temperature sufficient to allow grinding of the polymer to an effective particle and then grinding said polymer to the effective particle size in order that the polymer exhibits an increased T.sub.cc.

    摘要翻译： 本发明涉及改性聚合物如聚酯或聚酰胺的结晶温度（Tcc），通过该方法制备的聚合物和含有这些聚合物的模塑组合物的方法。 该方法包括将聚合物冷却到足以使聚合物研磨成有效颗粒的温度，然后将所述聚合物研磨至有效粒径，以使聚合物呈现增加的Tcc。

    Quasi-random copolymers from homopolymers
    6.
    发明授权
    Quasi-random copolymers from homopolymers 失效
    来自均聚物的准无规共聚物

    公开(公告)号：US4417032A

    公开(公告)日：1983-11-22

    申请号：US370885

    申请日：1982-04-22

    申请人： Yash P. Khanna ,  Edith A. Turi ,  Shaul M. Aharoni ,  Theodore Largman

    发明人： Yash P. Khanna ,  Edith A. Turi ,  Shaul M. Aharoni ,  Theodore Largman

    IPC分类号： C08G69/26 ,  C08G69/36 ,  C08G69/48 ,  C08L77/00 ,  C08L77/02

    CPC分类号： C08G69/48 ,  C08G69/265 ,  C08G69/36 ,  C08L77/00

    摘要： A process for preparing quasi-random copolymers is described which involves heating a mixture of polyamides in the presence of one or more phosphite promotor(s). The process is conducted at temperatures between about 265.degree. C. and 315.degree. C. with the process time generally ranging from about 2 to about 20 minutes. The process is especially useful for preparing copolymers from a mixture of poly(caproamide) and poly(hexamethylene adipamide). The copolymer products prepared in accordance with the process are particularly suitable for the production of plastic films which have improved properties as compared to either of the homopolymers.

    摘要翻译： 描述了制备准无规共聚物的方法，其涉及在一种或多种亚磷酸酯促进剂的存在下加热聚酰胺的混合物。 该方法在约265℃至315℃的温度下进行，处理时间通常为约2至约20分钟。 该方法对于由聚（己酰胺）和聚（己二酰己二胺）的混合物制备共聚物特别有用。 根据该方法制备的共聚物产物特别适用于与均聚物相比具有改进性能的塑料膜的生产。

    NUCLEATING AGENT FOR POLYETHYLENES
    7.
    发明申请
    NUCLEATING AGENT FOR POLYETHYLENES 审中-公开
    聚乙烯的核化剂

    公开(公告)号：US20120101209A1

    公开(公告)日：2012-04-26

    申请号：US13279039

    申请日：2011-10-21

    申请人： Yash P. Khanna ,  Amit Dharia ,  Andre M. Zeitoun

    发明人： Yash P. Khanna ,  Amit Dharia ,  Andre M. Zeitoun

    IPC分类号： C08K3/34 ,  C08L23/06

    CPC分类号： C08J3/226 ,  C08J2323/04 ,  C08J2323/10 ,  C08J2423/04 ,  C08J2423/10

    摘要： The invention relates to nucleation agents for polyethylenes wherein the nucleating agent is composed of one or more finely divided inorganic materials of halloysite that are dispersed throughout the polyethylene to increase the crystallization rate such that the polyethylenes can be more easily extruded, molded with a much shorter cycle time or thermoformed into intricate parts. The most preferred agent is halloysite nanotubular clay.

    摘要翻译： 本发明涉及聚乙烯的成核剂，其中成核剂由分散在整个聚乙烯中的一个或多个细碎的多水高岭土的无机材料组成，以提高结晶速率，使得聚乙烯可以更容易地挤出，模制成更短 循环时间或热成型为复杂部件。 最优选的试剂是多水高岭土纳米管粘土。