Method for controlled polymerization of o-carboxy anhydrides derived from alpha-hydroxy acids
申请人:Bourissou Didier
公开号:US20070249654A1
公开(公告)日:2007-10-25
The invention concerns a method for preparing poly(-hydroxy acids), the polymerization reaction being performed in controlled manner in the presence of a catalytic system including a base, said base being a 5- or 6-membered aromatic heterocycle comprising at least one endocyclic nitrogen atom, provided that when the base is used alone in the catalytic system, it does not represent pyridine, 2-methylpyridine, 2,6-dimethylpyridine or 2-methoxypyridine. The invention also concerns poly(-hydroxy acids) of formula (IV). Finally, the invention concerns the use of a poly(-hydroxy acid), obtainable by the inventive method, for vectoring active principles or for making biomaterials.
这项发明涉及一种制备聚(-羟基酸)的方法,聚合反应在存在包括一种碱的催化系统中进行控制方式进行,所述碱是一种含有至少一个内环氮原子的5-或6-成员芳香杂环,前提是当该碱单独在催化系统中使用时,它不代表吡啶、2-甲基吡啶、2,6-二甲基吡啶或2-甲氧基吡啶。该发明还涉及公式(IV)的聚(-羟基酸)。最后,该发明涉及通过所述创新方法获得的聚(-羟基酸)用于载荷活性成分或制备生物材料的用途。