SEQUENTIAL FORMATION OF ZIEGLER-NATTA CATALYST USING NON-BLENDED COMPONENTS

摘要

Catalyst compositions, methods of forming the same and polymers formed therefrom are described herein. The methods of forming the catalysts generally include contacting an alkyl magnesium compound with a viscosity modifier prior to contact with an alcohol to form a magnesium dialkoxide compound; contacting the magnesium dialkoxide compound with a first titanium alkoxide and a first agent to form a first solution reaction product“A”, wherein the titanium alkoxide and the first agent are non-blended individual components prior to contacting the magnesium dialkoxide; contacting the first solution reaction product“A”with a second titanium alkoxide to form a second solution reaction product“B”; contacting the second solution reaction product“B”with a second agent to form a first solid reaction product“C”; contacting the first solid reaction product“C”with a third agent to form a second solid reaction product“D”; and contacting the second solid reaction product“D”with a reducing agent to limn a catalyst component.