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    • 93. 发明授权
    • Process for phosphonylating the surface of an organic polymeric preform
    • 使有机聚合物预成型体的表面膦酰化的方法
    • US5491198A
    • 1996-02-13
    • US188478
    • 1994-01-28
    • Shalaby W. ShalabyM. Scott McCaig
    • Shalaby W. ShalabyM. Scott McCaig
    • C08F8/40C08J7/12
    • C08F8/40C08J7/12
    • A process for phosphonylating the surface of an organic polymeric preform and the surface-phosphonylated preforms produced thereby are provided. Organic polymeric preforms made from various polymers including polyethylene, polyetheretherketone, polypropylene, polymethylmethacrylate, polyamides, and polyester, and formed into blocks, films, and fibers may have their surfaces phosphonylated in a liquid-phase or gas phase reaction. Liquid phase phosphonylation involves the use of a solvent that does not dissolve the organic polymeric preform but does dissolve a phosphorus halide such as phosphorus trichloride. The solvent chosen must also be nonreactive with the phosphorus halide. Such solvents available for use in the present process include the fully-halogenated liquid solvents such as carbon tetrachloride, carbon tetrabromide, and the like. Gas phase phosphonylation involves treating the organic polymeric preform with a gaseous phosphorus halide such as phosphorus trichloride and oxygen. The inventive processes allow for surface phosphonylation of the organic polymeric preform such that up to about 30 percent of the reactive carbon sites in the polymer are phosphonylated. The inventive phosphonylated organic polymers are particularly useful as orthopedic implants because hydroxyapatite-like surfaces which can be subsequently created on the organic implants allow for co-crystallization of hydroxyapatite to form chemically-bound layers between prosthesis and bone tissue.
    • 提供了一种使有机聚合物预成型体的表面膦酰化和由此制备的表面膦酰化的预成型体的方法。 由包括聚乙烯,聚醚醚酮,聚丙烯,聚甲基丙烯酸甲酯,聚酰胺和聚酯在内的各种聚合物制成的有机聚合物预成型体可以在液相或气相反应中形成嵌段,膜和纤维。 液相膦酰化涉及使用不溶解有机聚合物预成型体但是溶解卤化磷如三氯化磷的溶剂。 所选择的溶剂也必须与卤化磷无反应。 可用于本方法的这些溶剂包括全卤代液体溶剂如四氯化碳,四溴化碳等。 气相膦酰化包括用气态卤化磷如三氯化磷和氧气处理有机聚合物预型体。 本发明的方法允许有机聚合物预型体的表面膦酰化,使得高达约30%的聚合物中的反应性碳位点被膦酰化。 本发明的膦酰化有机聚合物特别可用作矫形植入物,因为随后可以在有机植入物上产生的羟基磷灰石样表面允许羟基磷灰石的共结晶以在假体和骨组织之间形成化学结合的层。