Polymerization catalysts of high activity activated by carbu00eanio

摘要

Invention patent: "polymerization catalysts activated by carbu00eanio activity high.This application describes the NCA's old carbu00eanio as catalyst activators for a class of precursors, catalyst of hafnoceno asymmetrically in the bridge.These catalyst precursors are activated in catalysts for polymerization of olefins and are suitable for polymerization reactions of gas phase, solution and slurry.The bridge is described based on metilenil - or silanilenil and is optionally alkyl or arila replaced.The catalytic activity of the catalyst of hafnoceno described precursors is substantially enhanced in the same catalysts that are activated with other activators.