The present application relates to a method for the controlled and/or slow release of a biologically active hydroxyl group containing-substance on a substrate which comprises reacting said hydroxyl group containing substance subsequently with a halogen-substituted aliphatic carboxylic acid halide and either a diamine containing at least one tertiary amino group or a heterocyclic aromatic amine, applying the thus obtained water-soluble ester to the substrate and finally hydrolysing the ester on the substrate.
本申请涉及一种在基质上控制和/或缓慢释放具有
生物活性的含羟基物质的方法,该方法包括将所述含羟基物质随后与卤素取代的
脂肪族
羧酸卤化物和含有至少一个叔
氨基的二胺或杂环芳香胺反应,将由此获得的
水溶性
酯涂抹在基质上,最后
水解基质上的
酯。