Titanium (II) or Zirconium (II) complexes and addition polymeriz

Details Titanium (II) or Zirconium (II) complexes and addition polymeriz Titanium (II) or Zirconium (II) complexes and addition polymeriz

1995-08-15

1996-09-17

Nagumo, Mark

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526126, 526129, 526133, 526134, 526119, 526135, 526160, 526170, 5263483, 5263484, 5263485, 5263486, 5263487, 526351, 526352, 526347, 526282, 526901, 526905, 526943, C08F 4643, C08F 1000

Patent

active

055569285

ABSTRACT:
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.

REFERENCES:
patent: 5198401 (1993-03-01), Turner et al.
Yasuda, et al., Organometallics, 1,388 (1982).
Yasuda, et al., Acc. Chem. Res., 18, 120 (1985).
Erker, et al., Adv. Organomettic Chem., 24, 1, (1985).
Blenkes, et al., Organometallics, 6, 459-469 (1987).

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