MELT-STABILIZED ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE AND METHOD OF MAKING THE SAME
    1.
    发明申请
    MELT-STABILIZED ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE AND METHOD OF MAKING THE SAME 审中-公开
    熔融超稳定超高分子量聚乙烯及其制备方法

    公开(公告)号:WO2015138137A1

    公开(公告)日:2015-09-17

    申请号:PCT/US2015/017741

    申请日:2015-02-26

    申请人: ZIMMER, INC.

    发明人: PLETCHER, Dirk

    摘要: Various embodiments disclosed relate to melt-stabilized materials including ultra high molecular weight polyethylene (UHMWPE), methods of making the same, and medical implants including the same. In various embodiments, the present invention provides a method of melt-stabilizing a material including UHMWPE. The method includes obtaining or providing a solid material including UHMWPE including a first concentration of free-radicals. The method includes coating at least part of the solid material with a liquid composition including at least one antioxidant, to provide a coated solid material. The method includes heating the coated solid material in an environment including oxygen, the heating being sufficient to melt at least part of the UHMWPE, to provide a heated material. The method also includes solidifying the heated material, to provide a melt-stabilized material including UHMWPE including a second concentration of free-radicals, wherein the second concentration of free-radicals is less than the first concentration of free-radicals.

    摘要翻译: 所公开的各种实施方案涉及包括超高分子量聚乙烯(UHMWPE)的熔融稳定材料,其制备方法和包括其的医用植入物。 在各种实施方案中,本发明提供了熔融稳定包含UHMWPE的材料的方法。 该方法包括获得或提供包括UHMWPE的固体材料,其包括第一浓度的自由基。 该方法包括用包含至少一种抗氧化剂的液体组合物涂覆至少部分固体材料,以提供涂覆的固体材料。 该方法包括在包括氧的环境中加热涂覆的固体材料,该加热足以熔化至少部分UHMWPE,以提供加热的材料。 该方法还包括固化加热的材料,以提供包含UHMWPE的熔融稳定材料,其包括第二浓度的自由基,其中第二浓度的自由基小于第一浓度的自由基。

    POLYMER PROCESSING ADDITIVE, COMPOSITIONS, AND METHODS
    3.
    发明申请
    POLYMER PROCESSING ADDITIVE, COMPOSITIONS, AND METHODS 审中-公开
    聚合物加工添加剂,组合物和方法

    公开(公告)号:WO2015042415A1

    公开(公告)日:2015-03-26

    申请号:PCT/US2014/056581

    申请日:2014-09-19

    IPC分类号: C08L23/08 C08L71/02

    摘要: A poly(oxyalkylene) polymer and a metal salt of a carboxylic acid, sulfonic acid, or alkylsulfate, in combination are useful as a polymer processing additive synergist. Polymer processing additive compositions, homogeneously catalyzed olefin compositions, and other extrudable polymer compositions including a poly(oxyalkylene) polymer and a metal salt of a carboxylic acid, sulfonic acid, or alkylsulfate are disclosed. Methods of reducing melt defects during the extrusion of a thermoplastic polymer, which may be a homogeneously catalyzed polyolefin, are also disclosed.

    摘要翻译: 聚(氧化烯)聚合物和羧酸,磺酸或烷基硫酸盐的金属盐组合可用作聚合物加工添加剂增效剂。 公开了聚合物加工添加剂组合物,均匀催化的烯烃组合物和包括聚(氧化烯)聚合物和羧酸,磺酸或烷基硫酸盐的金属盐的其它可挤出聚合物组合物。 还公开了在挤出可能是均匀催化的聚烯烃的热塑性聚合物挤出期间减少熔体缺陷的方法。