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    Oxygen scavenging condensation copolymers for bottles and packaging articles
    3.
    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。