HIGH TEMPERATURE OLEFIN POLYMERIZATION PROCESS

摘要

A polymerization process for olefinically or acetylenically unsaturated monomers is disclosed. The process comprises contacting the one or more of the monome rs with a suitable ionic catalyst composition comprising the reaction product of a catalytically suitable Group 4, 5, 6 or 8 transition metal compound having a univalent hydride, alkyl or silyl ligand and a hydrated salt. The class of preferred anion precursors consists of hydrated salts comprising a Group 1 or 2 canon and a non-coordinating anion. Using the preferred ionic catalysts high temperature processes, e.g., at or above 90.degree.C can be conducted to prepare polyolefins, particularly ethylene copolymers, of both high molecular weight and high comonomer content.