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    Enhanced oxygen-scavenging polymers, and packaging made therefrom
    1.
    发明申请
    Enhanced oxygen-scavenging polymers, and packaging made therefrom 审中-公开
    增强的清除氧气的聚合物，以及由此制成的包装

    公开(公告)号：US20040043172A1

    公开(公告)日：2004-03-04

    申请号：US10647276

    申请日：2003-08-26

    Applicant: Continental PET Technologies, Inc.

    Inventor： Steven L. Schmidt ,  Brian Lynch ,  Keith Barker ,  Ronald Adams, SR. ,  Amit S. Agrawal

    IPC: B65D001/00

    CPC classification number: B32B27/18 ,  A23L3/3436 ,  B32B27/08 ,  B32B27/32 ,  B32B27/34 ,  B32B27/36 ,  B32B33/00 ,  B32B2307/518 ,  B32B2439/70 ,  C08K3/08 ,  C08K5/098 ,  C08K2003/0843 ,  C08K2201/012 ,  Y10T428/1338 ,  Y10T428/1352 ,  Y10T428/1355 ,  Y10T428/1359 ,  Y10T428/1379 ,  C08L77/00

    Abstract: Oxygen-scavenging polymers and packaging for holding oxygen-sensitive products. A heat treatment process has been found to significantly increase the oxygen-scavenging performance of the polymer. The enhanced scavenging polymer can be effectively incorporated into various packaging, including transparent multilayer containers for beer and juice. In one embodiment, a multilayer package made from the scavenger provides an actual reduction in oxygen content of a contents of the package, over a long period of time (e.g., 24 weeks). The package can be stored unfilled for an extended period (without significant loss of scavenging capability) and will scavenge substantially immediately upon filling with a liquid product. The package may incorporate a relatively low weight percentage of the scavenger, thus providing enhanced scavenging in a cost-effective manner.

    Abstract translation: 含氧清除聚合物和用于保存氧敏感产品的包装。 已经发现热处理工艺显着地提高了聚合物的清除氧气的性能。 增强的清除聚合物可以有效地结合到各种包装中，包括用于啤酒和果汁的透明多层容器。 在一个实施方案中，由清除剂制成的多层包装在长时间（例如24周）内提供包装内容物的氧含量的实际降低。 包装可以长时间储存​​（不会显着损失清除能力），并且在填充液体产品时将基本上立即清除。 包装可以包含相对较低重量百分比的清除剂，从而以成本有效的方式提供增强的清除。

    Process for making PEN/PET blends and transparent articles therefrom
    3.
    发明申请
    Process for making PEN/PET blends and transparent articles therefrom 失效
    制造PEN / PET共混物和透明制品的方法

    公开(公告)号：US20020177686A1

    公开(公告)日：2002-11-28

    申请号：US10155652

    申请日：2002-05-24

    Applicant: Continental PET Technologies, Inc.

    Inventor： Steven L. Schmidt ,  Brian Lynch ,  Amit S. Agrawal

    IPC: C08G063/02 ,  C08F020/00

    CPC classification number: C08G63/80 ,  C08L67/02 ,  C08L2666/18

    Abstract: Process for controlling the change of intrinsic viscosity and transesterification during solid stating of a polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) blend, with an effective amount of an ethylene glycol compound. The process enables the production of a copolymer based on predefined initial and final IV's and final transesterification level, by varying the solid-stating time and/or effective amount of ethylene glycol. In one embodiment, a relatively greater amount of post-consumer PET (e.g., 70%) having an IV of on the order of 0.72-0.73, is incorporated in the blend to provide a final IV on the order of 0.80-0.85, and a moderate, controlled level of transesterification; the blend is used to injection mold a sleeve layer of a preform. In another embodiment, a substantially transparent neck finish for a preform is made from a PEN/PET blend having an amount of ethylene glycol which enables substantial transesterification, without excessive increase in IV.

    Abstract translation: 用于控制聚对苯二甲酸乙二醇酯（PET）和聚萘二甲酸乙二醇酯（PEN）共混物固化期间的特性粘度和酯交换的变化与有效量的乙二醇化合物的方法。 该方法可以通过改变固体时间和/或有效量的乙二醇来制备基于预定义的初始和最终IV和最终酯交换水平的共聚物。 在一个实施方案中，将具有大约0.72-0.73的IV的相对较大量的消费后PET（例如，70％）掺入共混物中以提供大约0.80-0.85的最终IV，以及 中等，受控的酯交换水平; 该混合物用于注射成型预成型件的套筒层。 在另一个实施方案中，用于预成型件的基本上透明的颈部精加工由具有一定量的乙二醇的PEN / PET共混物制成，其能够进行实质的酯交换，而不会过多地增加IV。

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