Propylthiotetramethylcyclopentadienyl complexes of iron, titanium and zirconium. Structural characterization of [η5-C5Me4SCH2CH2CH3]2TiCl2
摘要:
The use of the propylthio substituted tetramethylcyclopentadienylsodium salt leads to octamethyl-1,1'-di(propylthio)ferrocene and dichlorodi(propylthiotetramethylcyclopentadienyl)zirconium or titanium(IV). The structure of [eta(5)-C5Me4SCH2CH2CH3](2)TiCl2 has been established by X-ray analysis (orthorhombic, Pbca, a = 16.767(1), b = 16.247(3), c = 19.002(3) Angstrom, V = 5176.2(9) Angstrom(3), Z = 8, R-F = 0.052). The complexes have been characterized by H-1 and C-13 NMR and electrochemical studies.
Metal complexes having constrained geometry and a process for preparation thereof, addition polymerization catalysts formed therefrom, processes for preparation of such addition polymerization catalysts, methods of use, and novel polymers formed thereby, including ElPE resins and pseudo-random copolymers, are disclosed and claimed.
Pseudo-random copolymers formed by use of constrained geometry addition
申请人:The Dow Chemical Company
公开号:US05703187A1
公开(公告)日:1997-12-30
Metal complexes having constrained geometry and a process for preparation thereof, addition polymerization catalysts formed therefrom, processes for preparation of such addition polymerization catalysts, methods of use, and novel polymers formed thereby, including ElPE resins and pseudo-random copolymers, are disclosed and claimed.
The subject invention is directed to a composition comprising a polymer, comprising in polymerized form ethylene and at least one additional polymerizable monomer, prepared by polymerizing ethylene and said at least one addition polymerizable monomer in the presence of a catalyst comprising a recited cyclopentadienyl group-containing metal coordination complex and an activating cocatalyst, wherein said composition is an asphalt, bitumen, or adhesive composition.
Olefin polymers formed by use of constrained geometry addition polymerization catalysts
申请人:The Dow Chemical Company
公开号:US06670432B1
公开(公告)日:2003-12-30
Metal complexes having constrained geometry and a process for preparation thereof, addition polymerization catalysts formed therefrom, processes for preparation of such addition polymerization catalysts, methods of use, and novel polymers formed thereby, including ElPE resins and pseudo-random copolymers, are disclosed and claimed.