The invention provides semi-solid systems for delivering biologically active materials that include a polymer comprising 1) one or more units of formula Ia, IIa, or IIIa:(formula Ia, IIa, IIIa) and 2) one or more units comprising polycaprolactone; wherein R and Ra have any of the values defined in the application.
本发明提供了半固态系统,用于传递
生物活性物质,包括聚合物,其中聚合物包括1)一个或多个公式Ia,IIa或IIIa的单元:(公式Ia,IIa,IIIa),和2)一个或多个包含聚
己内酯的单元;其中R和Ra具有申请中定义的任何值。