The present invention provides a chemically-modified support comprising an inorganic oxide containing optionally functionalized hydroxyl groups, having chemically linked thereto the cation of a cation/anion pair. The present invention further provides a supported catalyst system comprising the chemically-modified support as described above, and a transition metal compound of Groups 3-10 (preferably a Group 4 metal compound) containing at least one π-bonded anionic ligand group, said transition metal compound being capable of reacting with the chemically-modified support through the cation of the cation/anion pair to thereby render the transition metal compound catalytically active. The present invention further provides a process for preparing the chemically-modified support of the invention. The present invention further provides an addition polymerization process comprising contacting one or more addition polymerizable monomers with the supported catalyst system of the invention under addition polymerization conditions.
本发明提供了一种
化学修饰的支撑体,包括一种无机氧化物,其中含有可选的功能化羟基,其
化学上与阳离子/阴离子对的阳离子相连。本发明还提供了一种支撑催化剂体系,包括上述
化学修饰的支撑体和3-10族过渡
金属化合物(优选为4族
金属化合物),其中过渡
金属化合物含有至少一个π键
配体阴离子基团,该过渡
金属化合物能够通过阳离子/阴离子对的阳离子与
化学修饰的支撑体反应,从而使过渡
金属化合物具有催化活性。本发明还提供了一种制备上述
化学修饰的支撑体的方法。本发明还提供了一种加成聚合过程,包括在加成聚合条件下将一种或多种加成聚合单体与本发明的支撑催化剂体系接触。