Titanium (II) or Zirconium (II) complexes and addition polymerization
申请人:The Dow Chemical Company
公开号:US05556928A1
公开(公告)日:1996-09-17
A process for polymerizing olefins, diolefins and/or acetylenically unsaturated monomers using novel catalyst compositions comprising titanium or zirconium complexes containing one and only one cyclic delocalized, anionic, .pi.-bonded group wherein the metal is in the +2 formal oxidation state and having a bridged ligand structure, also referred to as constrained geometry complexes, and an activating cocatalyst.
Titanium (II) or zirconium (II) complexes and addition polymerization
申请人:The Dow Chemical Company
公开号:US05624878A1
公开(公告)日:1997-04-29
Novel catalytic derivatives of titanium or zirconium complexes containing one and only one cyclic delocalized, anionic, .PI.-bonded group wherein the metal is in the +2 formal oxidation state and having a bridged ligand structure and an activating cocatalyst are useful as catalysts for polymerizing olefins, diolefins and/or acetylenically unsaturated monomers.
Titanium(II) or zirconium(II) complexes and addition polymerization
申请人:The Dow Chemical Company
公开号:US05470993A1
公开(公告)日:1995-11-28
Novel titanium or zirconium complexes containing one and only one cyclic delocalized, anionic, .pi.-bonded group wherein the metal is in the +2 formal oxidation state and having a bridged ligand structure, also referred to as constrained geometry complexes; catalytic derivatives of such complexes; methods of preparation; and the use thereof as catalysts for polymerizing olefins, diolefins and/or acetylenically unsaturated monomers.