Anhydride polymers that release active or activatable agent(s) have pre-selected properties such as molecular weight, flexibility, hardness, adhesiveness, and other valuable properties. The polymers are suitable for use in compositions, formulations, coatings, devices, and the like that benefit from the controlled release of an agent(s) over a period of time. The polymers are prepared by a process involving various alternative and sequential steps that allow the design a priori of products with specific characteristics. The polymers are suitable as delivery systems, either by themselves, as compositions, formulations or devices.
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水酐聚合物可以释放活性或可激活的药剂,具有预选的性质,如分子量、柔韧性、硬度、粘附性和其他有价值的性质。这些聚合物适用于需要在一段时间内控制释放药剂的组合物、配方、涂层、装置等。这些聚合物是通过涉及各种替代和顺序步骤的过程制备的,允许事先设计具有特定特性的产品。这些聚合物适用于作为传递系统,可以作为组合物、配方或装置本身。