Mixed metal catalyst

Application Number  00128315 Application Date  2000.11.21
Publication Number  1301601 Publication Date  2001.07.04
Priority Information   1999/11/22 US 09/444688  
Applicant(s) Name  Union Carbide Chemicals & Plastics Technology Corp.  
Inventor(s) Name  D.M. Brawn  
Patent Agency Code  72001 Patent Agent  lu xinhua
AbstractA composition comprising (i) a supported or unsupported magnesium/titanium based catalyst precursor including an electron donor and (ii) a lanthanide catalyst precursor represented by the following formula: CpaLnRbLc wherein Cp is a cyclopentadienyl or substituted cyclopentadienyl ligand; Ln is a lanthanide metal; R is a hydride, alkyl, silyl, halide, or aryl group; L is an electron donor; a+b is the valence of the lanthanide metal; and c is a sufficient amount of electron donor to stabilize the lanthanide metal.