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    Polypropylene article and method of preparing polypropylene article
    1.
    发明申请
    Polypropylene article and method of preparing polypropylene article 失效
    聚丙烯制品及其制备方法

    公开(公告)号：US20060251913A1

    公开(公告)日：2006-11-09

    申请号：US11114377

    申请日：2005-04-26

    Applicant: Lisa Albe

    Inventor： Lisa Albe

    IPC: B32B27/32

    CPC classification number: B32B27/32 ,  B32B7/005 ,  B32B7/02 ,  B32B27/08 ,  B32B2250/03 ,  B32B2250/40 ,  B32B2307/412 ,  B32B2307/558 ,  B32B2439/46 ,  B32B2439/62 ,  B32B2439/70 ,  B32B2439/80 ,  B32B2509/00 ,  B32B2605/08 ,  Y10T428/1317 ,  Y10T428/31909 ,  Y10T428/31913 ,  Y10T428/31938

    Abstract: A thermoformed polypropylene article, or sheet for preparing such articles, is formed from a layer of substantially syndiotactic polypropylene and a thin outer layer of substantially isotactic polypropylene that is joined to the layer of syndiotactic polypropylene. At least one of the layers is a non-oriented layer. Two layers of isotactic polypropylene may be used with the layer of syndiotactic polypropylene, so that the syndiotactic polypropylene is sandwiched between the two layers of isotactic polypropylene. The use of the isotactic polypropylene enhances the processability of the syndiotactic polypropylene, which is oftentimes difficult to process because of its lower melting point and slow solidification rate. Because the sheet is comprised predominantly of syndiotactic polypropylene, utilizing only thin outer layers of isotactic polypropylene, it has better transparency and higher impact strength than those conventional articles formed entirely of isotactic polypropylene.

    Abstract translation: 用于制备这种制品的热成型聚丙烯制品或片材由基本间同立构聚丙烯层和连接到间同立构聚丙烯层的基本上全同立构聚丙烯的薄层外层形成。 层中的至少一个是非取向层。 间同立构聚丙烯层可以使用两层全同立构聚丙烯，间同立构聚丙烯夹在两层全同立构聚丙烯之间。 全同立构聚丙烯的使用提高了间同立构聚丙烯的加工性能，因为它具有较低的熔点和较低的固化速度，这通常难于加工。 由于片材主要由间同立构聚丙烯组成，仅利用全同立构聚丙烯的薄层外层，与完全由全同立构聚丙烯形成的常规制品相比，其具有更好的透明度和更高的冲击强度。

    Polymerization process
    2.
    发明授权
    Polymerization process 失效

    公开(公告)号：US06998431B2

    公开(公告)日：2006-02-14

    申请号：US10112562

    申请日：2002-03-28

    Applicant: Lisa Albe

    Inventor： Lisa Albe

    IPC: C08K5/34

    CPC classification number: C08K5/3435 ,  C08L23/02

    Abstract: Process for the production of an alpha olefin polymer and a process for the treatment of the alpha olefin polymer. A polymerization feed containing an alpha olefin, such as propylene, is supplied to the reactor to produce a thermoplastic polymer product involving a homopolymer or a copolymer. A product stream containing the polymer is withdrawn from the polymerization reactor and the polymer product is recovered from the product stream. The polymer product is then processed to produce the polymer product in a granular or pelletized form. A hindered amine light stabilizer is oxidized with an oxidizing agent under conditions to convert at least a portion of the amine groups to nitroxyl groups. The oxidized hindered amine light stabilizer is then supplied to the polymer product prior to heating and processing of the polymer product.

    Polypropylene article and method of preparing polypropylene article
    3.
    发明授权
    Polypropylene article and method of preparing polypropylene article 失效
    聚丙烯制品及其制备方法

    公开(公告)号：US07413812B2

    公开(公告)日：2008-08-19

    申请号：US11114377

    申请日：2005-04-26

    Applicant: Lisa Albe

    Inventor： Lisa Albe

    IPC: B28B21/00 ,  B29C55/00

    CPC classification number: B32B27/32 ,  B32B7/005 ,  B32B7/02 ,  B32B27/08 ,  B32B2250/03 ,  B32B2250/40 ,  B32B2307/412 ,  B32B2307/558 ,  B32B2439/46 ,  B32B2439/62 ,  B32B2439/70 ,  B32B2439/80 ,  B32B2509/00 ,  B32B2605/08 ,  Y10T428/1317 ,  Y10T428/31909 ,  Y10T428/31913 ,  Y10T428/31938

    Abstract: A thermoformed polypropylene article, or sheet for preparing such articles, is formed from a layer of substantially syndiotactic polypropylene and a thin outer layer of substantially isotactic polypropylene that is joined to the layer of syndiotactic polypropylene. At least one of the layers is a non-oriented layer. Two layers of isotactic polypropylene may be used with the layer of syndiotactic polypropylene, so that the syndiotactic polypropylene is sandwiched between the two layers of isotactic polypropylene. The use of the isotactic polypropylene enhances the processability of the syndiotactic polypropylene, which is oftentimes difficult to process because of its lower melting point and slow solidification rate. Because the sheet is comprised predominantly of syndiotactic polypropylene, utilizing only thin outer layers of isotactic polypropylene, it has better transparency and higher impact strength than those conventional articles formed entirely of isotactic polypropylene.

    Abstract translation: 用于制备这种制品的热成型聚丙烯制品或片材由基本间同立构聚丙烯层和连接到间同立构聚丙烯层的基本上全同立构聚丙烯的薄层外层形成。 层中的至少一个是非取向层。 间同立构聚丙烯层可以使用两层全同立构聚丙烯，间同立构聚丙烯夹在两层全同立构聚丙烯之间。 全同立构聚丙烯的使用提高了间同立构聚丙烯的加工性能，因为它具有较低的熔点和较低的固化速度，这通常难于加工。 由于片材主要由间同立构聚丙烯组成，仅利用全同立构聚丙烯的薄层外层，与完全由全同立构聚丙烯形成的常规制品相比，其具有更好的透明度和更高的冲击强度。

    Polymerization process
    4.
    发明授权
    Polymerization process 失效
    聚合过程

    公开(公告)号：US6090872A

    公开(公告)日：2000-07-18

    申请号：US166360

    申请日：1998-10-05

    Applicant: Lisa Albe ,  Pamela Lawyer ,  Jay Nguyen ,  Mohan Gownder

    Inventor： Lisa Albe ,  Pamela Lawyer ,  Jay Nguyen ,  Mohan Gownder

    IPC: C08K5/1535 ,  C08K5/15

    CPC classification number: C08K5/1535

    Abstract: A process for the production and treatment of a stereoregular polypropylene, such as isotactic polypropylene in which a polymerization reactor is operated under conditions to react propylene supplied to the reactor to produce a stereoregular propylene polymer fluff. A product stream containing the fluff and unreacted propylene is withdrawn from the reactor and at least a portion of the unreacted propylene is separated from the product stream. The propylene polymer fluff is heated to a temperature sufficient to melt the propylene polymer, and a lactone is incorporated into the propylene polymer. The lactone is a 5,7 dialkyl-3-(2,3 dialkyl phenyl)-3H-benzofuran-2-one, in which the 5,7 and 2,3 substituents are of relatively low molecular weights. The phenyl alkyl substituents, each contain 1 or 2 carbon atoms, and the 5,7 alkyl substituents each contain from 2 to 5 carbon atoms. After the heating and incorporation of the lactone, the heated polymer fluff containing the lactone is extruded to produce particles of the propylene polymer. The polymer particles containing the lactone can be heated to a molten state and then extruded to form a fiber preform. The fiber preform is subject to spinning and drawing at differential spinning and drawing speeds to provide a draw ratio sufficient to form a continuous polypropylene fiber.

    Abstract translation: 一种制备和处理立体规则聚丙烯的方法，例如全同立构聚丙烯，其中聚合反应器在提供给反应器的丙烯反应产生立体规则丙烯聚合物绒毛的条件下运行。 将含有绒毛和未反应的丙烯的产物流从反应器中排出，至少一部分未反应的丙烯与产物流分离。 将丙烯聚合物绒毛加热至足以熔化丙烯聚合物的温度，并将内酯加入到丙烯聚合物中。 内酯是5,7-二烷基-3-（2,3-二烷基苯基）-3H-苯并呋喃-2-酮，其中5,7和2,3个取代基具有相对​​较低的分子量。 苯基烷基取代基各自含有1或2个碳原子，5,7个烷基取代基各自含有2至5个碳原子。 加热并加入内酯后，将含有内酯的加热聚合物绒毛挤出以产生丙烯聚合物的颗粒。 可以将含有内酯的聚合物颗粒加热至熔融状态，然后挤出以形成纤维预制件。 在不同的纺丝和拉伸速度下对纤维预制件进行纺丝和拉伸，以提供足以形成连续聚丙烯纤维的拉伸比。

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