Zwitterionic polymers
    1.
    发明授权
    Zwitterionic polymers 有权
    两性离子聚合物

    公开(公告)号:US06852816B2

    公开(公告)日:2005-02-08

    申请号:US10398400

    申请日:2001-10-05

    摘要: Polymers may be made from zwitterionic monomers having controlled architectures and molecular weights, using living polymerisations such as group or atom transfer radical polymerisation. For instance polymers may be formed by atom transfer radical polymerisation using a copper chloride catalyst, a ligand which is water soluble, and a water soluble tertiary alkyl halide initiator to form homopolymers having controlled polydispersities of less than 1.5 and block copolymers with other hydrophilic or hydrophobic monomers. One suitable zwitterionic monomer is 2-methacryloyloxy-2′-trimethylammoniumethyl phosphate inner salt. The block copolymers may spontaneously form micelles, believed to have zwitterionic, for instance phosphorylcholine, groups at the external surface, which may be useful as drug delivery systems with improved biocompatibility.

    摘要翻译: 聚合物可以由具有受控结构和分子量的两性离子单体制备,使用活性聚合如基团或原子转移自由基聚合。 例如聚合物可以通过使用氯化铜催化剂,水溶性配体和水溶性叔烷基卤引发剂的原子转移自由基聚合形成,以形成控制多分散度小于1.5的均聚物和具有其它亲水或疏水性的嵌段共聚物 单体。 一种合适的两性离子单体是2-甲基丙烯酰氧基-2'-三甲基铵乙基磷酸内酯盐。 嵌段共聚物可以自发​​形成胶束,据信其具有两性离子,例如磷酸胆碱,在外表面的基团,其可用作具有改善的生物相容性的药物递送系统。

    Zwitterionic polymers
    2.
    发明授权
    Zwitterionic polymers 有权
    两性离子聚合物

    公开(公告)号:US07300990B2

    公开(公告)日:2007-11-27

    申请号:US11025968

    申请日:2005-01-03

    IPC分类号: C08F130/02

    摘要: Polymers may be made from zwitterionic monomers having controlled architectures and molecular weights, using living polymerisations such as group or atom transfer radical polymerisation. For instance polymers may be formed by atom transfer radical polymerisation using a copper chloride catalyst, a ligand which is water soluble, and a water soluble tertiary alkyl halide initiator to form homopolymers having controlled polydispersities of less than 1.5 and block copolymers with other hydrophilic or hydrophobic monomers. One suitable zwitterionic monomer is 2-methacryloyloxy-2′-trimethylammoniumethyl phosphate inner salt. The block copolymers may spontaneously form micelles, believed to have zwitterionic, for instance phosphorylcholine, groups at the external surface, which may be useful as drug delivery systems with improved biocompatibility.

    摘要翻译: 聚合物可以由具有受控结构和分子量的两性离子单体制备,使用活性聚合如基团或原子转移自由基聚合。 例如聚合物可以通过使用氯化铜催化剂,水溶性配体和水溶性叔烷基卤引发剂的原子转移自由基聚合形成,以形成具有小于1.5的受控多分散性的均聚物和具有其它亲水或疏水性的嵌段共聚物 单体。 一种合适的两性离子单体是2-甲基丙烯酰氧基-2'-三甲基铵乙基磷酸内酯盐。 嵌段共聚物可以自发​​形成胶束,据信其具有两性离子,例如磷酸胆碱,在外表面的基团,其可用作具有改善的生物相容性的药物递送系统。