Biodegradable compositions comprising poly(cycloaliphatic phosphoester) compounds, articles, and methods for using the same
申请人:——
公开号:US20020137814A1
公开(公告)日:2002-09-26
Biodegradable, flowable or flexible polymer compositions are described comprising a polymer having the recurring monomeric units shown in formula I:
1
wherein:
each of R and R′ is independently straight or branched alkylene, either unsubstituted or substituted with one or more non-interfering substituents;
L is a divalent cycloaliphatic group;
R″ is selected from the group consisting of H, alkyl, alkoxy, aryl, aryloxy, heterocyclic or heterocycloxy; and
n is 5 to 1,000,
wherein said biodegradable polymer is biocompatible before and upon biodegradation. In one embodiment, one or more of R, R′ or R″ is a biologically active substance.
Amorphous compositions containing a biologically active substance, in addition to the polymer, and methods for controllably releasing biologically active substances using the compositions, are also described.
本文描述了可生物降解、可流动或柔性的聚合物组合物,其包括具有公式I:1所示的重复单体单位的聚合物:其中:R和R′各自独立地是直链或支链烷基,未取代或取代有一个或多个非干扰性取代基;L是二价的环状脂环族基;R″选择自H、烷基、烷氧基、芳基、芳氧基、杂环或杂环氧基的群;n为5至1,000,在生物降解前和生物降解时,所述可生物降解聚合物是生物相容的。在其中一种实施方式中,R、R′或R″中的一个或多个是生物活性物质。还描述了包含生物活性物质的非晶态组合物,除了聚合物外,还描述了使用组合物可控释放生物活性物质的方法。