Group 4, metal-conjugated diene metallocyclopentene complexes, a

Details Group 4, metal-conjugated diene metallocyclopentene complexes, a Group 4, metal-conjugated diene metallocyclopentene complexes, a

1995-04-27

1996-07-23

Nagumo, Mark

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526127, 526133, 526134, 526160, 526170, 526352, 502103, 502117, 502152, 556 7, 556 11, 556 22, 556 52, C08F 4643

Patent

active

055390684

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.

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