High-pressure polymerization method in the transition metal catalyst systems of recent

摘要

(57) polymerization process and transition metal catalyst systems recently, [summary] The present invention encompasses the use solution of ethylene-containing polymer, in the supercritical phase polymerization and two-phase suspension in particular. Preferred embodiments include the use of a transition metal catalyst systems, including the recent for polymerization at a concentration conditions, the Group 11 metal complexes, or 9, 10 which is stabilized by a bidentate Haigo-ko structure or high ethylene pressure.