Abstract:
Silane functional polymers having uniform silane distribution, long chain branching or tertiary silane functionality and conversion thereof through coupling, hydrolysis, hydrolysis and neutralization, condensation, oxidation or hydrosilation are disclosed.
Abstract:
Disclosed is a process for preparing bridged Group 4 metal complexes containing a neutral diene ligand starting from the corresponding novel, metal diene containing complexes by reaction thereof with the divalent derivative of a bridged bidentate ligand compound. The novel, intermediate metal diene complexes, their formation from tetravalent metal salts and an integrated process combining both process steps are claimed.
Abstract:
Metal complexes useful as components of addition polymerization catalysts are prepared by oxidizing Group 4 or Lanthanide metal containing complexes using an organic halide oxidizing agent in a unique one electron oxidation.
Abstract:
Olefins are polymerized by the use of catalysts comprising biscyclopentadienyl, Group 4 transition metal complexes formed with conjugated dienes wherein the diene is bound to the transition metal either in the form of a .sigma.-complex or a .pi.-complex in combination with activating cocatalysts.
Abstract:
A process for preparing titanium or zirconium diene complexes wherein the metal is in the +2 formal oxidation state comprising contacting a conjugated or nonconjugated C.sub.4-40 diene compound with a hydrocarbyloxide containing precursor complex.
Abstract:
Novel Group 4 metal complexes containing one and only one cyclic delocalized, anionic, .pi.-bonded group wherein the metal is in the +4 formal oxidation state and having a bridged ligand structure, also referred to as constrained geometry complexes and a conjugated diene divalent anionic ligand group; catalytic derivatives of such complexes including novel zwiterionic complexes; and the use thereof as catalysts for polymerizing olefins, diolefins and/or acetylenically unsaturated monomers.
Abstract:
Group 4 metal complexes useful as addition polymerization catalysts are prepared by electrolysis of cyclopentadienyl metal complexes under inert electrolysis conditions.