Process for oxidative functionalization of polymers containing
alkylstyrene
    13.
    发明授权
    Process for oxidative functionalization of polymers containing alkylstyrene 失效
    含烷基苯乙烯的聚合物的氧化官能化方法

    公开(公告)号:US5679748A

    公开(公告)日:1997-10-21

    申请号:US628416

    申请日:1996-04-05

    IPC分类号: C08F8/00 C08F8/06 C08F212/08

    摘要: This invention provides a method by which an alkylstyrene containing polymer may be exclusively functionalized at the primary benzylic carbon site of the styrenic monomer. The process of this invention comprises the treatment of an alkylstyrene containing polymer dissolved in a non-polar liquid medium with an organic hydroperoxide oxidizing reagent in the presence of a catalytically sufficient amount of a chromium compound, to oxidize a portion of the aromatic alkyl groups of the polymer to an oxygen containing functional group.

    摘要翻译: 本发明提供了一种含烷基苯乙烯的聚合物可以在苯乙烯类单体的伯苄基碳原子官能化官能化的方法。 本发明的方法包括在催化足够量的铬化合物存在下,用有机氢过氧化物氧化试剂处理溶解在非极性液体介质中的含烷基苯乙烯的聚合物,以氧化一部分芳族烷基 该聚合物与含氧官能团。

    Main chain acid-degradable polymers for the delivery of bioactive materials
    19.
    发明授权
    Main chain acid-degradable polymers for the delivery of bioactive materials 有权
    用于递送生物活性材料的主链酸降解聚合物

    公开(公告)号:US08137700B2

    公开(公告)日:2012-03-20

    申请号:US12299506

    申请日:2007-05-04

    摘要: Novel main chain acid degradable polymer backbones and drug delivery systems comprised of materials capable of delivering bioactive materials to cells for use as vaccines or other therapeutic agents are described. The polymers are synthesized using monomers that contain acid-degradable linkages cleavable under mild acidic conditions. The main chain of the resulting polymers readily degrade into many small molecules at low pH, but remain relatively stable and intact at physiological pH. The new materials have the common characteristic of being able to degrade by acid hydrolysis under conditions commonly found within the endosomal or lysosomal compartments of cells thereby releasing their payload within the cell. The materials can also be used for the delivery of therapeutics to the acidic regions of tumors and other sites of inflammation.

    摘要翻译: 描述了由能够将生物活性物质递送至用作疫苗或其它治疗剂的细胞的材料组成的新型主链酸可降解聚合物主链和药物递送系统。 使用含有酸可降解键的单体在温和的酸性条件下可裂解来合成聚合物。 所得聚合物的主链在低pH下容易降解成许多小分子,但在生理pH下保持相对稳定和完整。 新材料具有在细胞的内体或溶酶体区室内通常发现的条件下能够通过酸水解降解的共同特征,从而释放其在细胞内的有效载荷。 这些材料也可以用于将治疗剂递送到肿瘤和其它炎症部位的酸性区域。