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    Oxygen scavenging condensation copolymers for bottles and packaging articles
    5.
    发明授权
    Oxygen scavenging condensation copolymers for bottles and packaging articles 有权
    用于瓶子和包装制品的氧气清除缩合共聚物

    公开(公告)号：US06509436B1

    公开(公告)日：2003-01-21

    申请号：US09606459

    申请日：2000-06-29

    申请人： Paul J. Cahill ,  Stephen Y. Chen

    发明人： Paul J. Cahill ,  Stephen Y. Chen

    IPC分类号： C08G6378

    CPC分类号： B32B27/36 ,  B65D1/0215 ,  B65D81/266 ,  Y10T428/1352 ,  Y10T428/31725

    摘要： Compositions for scavenging oxygen are disclosed. These compositions comprise condensation copolymers comprising predominantly polyester segments and an oxygen scavenging amount of polyolefin oligomer segments. The polyester segments comprise segments derived from typical bottling and packaging polyesters such as PET and PEN. The copolymers are preferably formed by transesterification during reactive extrusion and typically comprise about 0.5 to about 12 wt % of polyolefin oligomer segments. The copolycondensates are capable of absorbing at least 0.4 cc of oxygen per gram of copolymer in the solid state at ambient temperatures and are typically used as layers in films, liners, cups, wraps, bottles, etc. Use of these oxygen scavenging compositions in bottles provides a clear and rigid bottle similar in appearance to unmodified polyester bottles. In a series of preferred embodiments, bottles fabricated with the oxygen scavenging copolycondensates of this invention are over 99.4 wt % polyester and suitable for recycle with other polyester bottles.

    摘要翻译： 公开了用于清除氧气的组合物。 这些组合物包含主要包含聚酯链段和除氧量的聚烯烃低聚物链段的缩合共聚物。 聚酯片段包含衍生自典型装瓶和包装聚酯如PET和PEN的片段。 共聚物优选通过反应性挤出期间的酯交换形成，并且通常包含约0.5至约12重量％的聚烯烃低聚物链段。 共聚缩聚物能够在环境温度下以固体状态吸收每克共聚物至少0.4cc的氧气，并且通常用作膜，衬里，杯子，包装，瓶子等中的层。在氧气瓶中使用这些除氧组合物 提供了一种与未改性聚酯瓶相似的透明刚性瓶子。 在一系列优选实施方案中，用本发明的除氧共聚缩聚物制造的瓶子超过99.4重量％的聚酯并且适合于与其它聚酯瓶一起循环使用。

    Copolyamide active-passive oxygen barrier resins
    9.
    发明授权
    Copolyamide active-passive oxygen barrier resins 有权
    共聚酰胺主动 - 被动氧阻隔树脂

    公开(公告)号：US06506463B1

    公开(公告)日：2003-01-14

    申请号：US09485475

    申请日：2000-02-11

    申请人： Paul J. Cahill ,  Joel Albert Richardson ,  Raymond V. Wass

    发明人： Paul J. Cahill ,  Joel Albert Richardson ,  Raymond V. Wass

    IPC分类号： B29D2200

    CPC分类号： B32B27/36 ,  B65D1/0215 ,  B65D81/266 ,  Y10T428/1352 ,  Y10T428/31725

    摘要： Compositions for scavenging oxygen are disclosed. These compositions comprise copolyamides comprising over 50 weight percent polyamide segments and an active oxygen scavenging amount of polyolefin oligomer segments. The polyamide segments comprise segments derived from typical bottling and packaging polyamides such as polyhexamethyleneadipamide and polyphthalamides. The copolymers are preferably formed by transesterification during reactive extrusion and typically comprise about 0.5 to about 12 wt. % of polyolefin oligomer segments. The copolyamides provide enhanced active and passive oxygen barrier properties over similar polyester constructions and similar polyamide constructions, when used in a laminar construction. In a series of preferred embodiments, multi-layered bottles fabricated with the oxygen scavenging copolyatnides of this invention are about 99.8 wt. % polyamide and suitable for recycle with other polyamide bottles.

    摘要翻译： 公开了用于清除氧气的组合物。 这些组合物包含包含超过50重量％的聚酰胺链段和活性氧清除量的聚烯烃低聚物链段的共聚酰胺。 聚酰胺链段包含衍生自典型的装瓶和包装聚酰胺如聚六亚甲基己二酰胺和聚邻苯二甲酰胺的链段。 共聚物优选通过在反应性挤出期间的酯交换形成，并且通常包含约0.5至约12wt。 ％的聚烯烃低聚物片段。 当在层状结构中使用时，共聚酰胺比类似的聚酯结构和类似的聚酰胺结构提供增强的主动和被动氧阻隔性能。 在一系列优选实施方案中，用本发明的除氧共聚酯制造的多层瓶约为99.8wt。 ％聚酰胺，适合与其他聚酰胺瓶循环使用。