Improved methods for forming substituted polymers having a high degree of conjugation include the steps of activating a steric hindrance molecule under conditions that ensure substantially all the steric hindrance molecules are mono-activated and then reacting with a polymer. An improved method for recovering polypeptides substituted with steric hindrance molecules and having an elongate configuration removes impurities and volatiles without achieving complete dryness of the copolymer.
形成具有高度共轭的取代聚合物的改进方法包括以下步骤:在确保基本上所有的立体阻碍分子都被单活化的条件下活化立体阻碍分子,然后与聚合物反应。一种用于回收被立体阻碍分子取代并具有细长构型的
多肽的改进方法,可以去除杂质和挥发物,而不会使共聚物完全干燥。