Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1996-05-28
1998-05-05
Wu, David W.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502117, 502125, 502152, 526126, 526127, 526160, 5263486, 526943, C08F 464
Patent
active
057474044
ABSTRACT:
Disclosed is a catalyst having the formula ##STR1## where each R is independently selected from aliphatic from C.sub.1 to C.sub.6 and aromatic from C.sub.6 to C.sub.10, each R.sub.5 is independently selected from H, R, and L', each L' is independently selected from LM'L.sub.r X.sub.3-r or two L' groups form the bridge --LM'X.sub.2-r L.sub.r --, each L is independently selected from cyclopentadienyl, indenyl, and fluorenyl, X is chlorine or bromine, M' is zirconium, titanium, or hafnium, n is 5 to 500, the ratio of R to H+L in R.sub.5 is 0 to 100, the ratio of H to L' in R.sub.5 is 0 to 4, and r is 0 or 1.
REFERENCES:
patent: 5071808 (1991-12-01), Antberg et al.
patent: 5473020 (1995-12-01), Peifer et al.
Macromolecular: Rapid Communications, vol. 16, No. 12, 1 Dec. 1995, pp. 905-911, XP000583889, Kazuo Soga et al.: "Olefin Polymerization with Metallocene Catalysts Supported on Polysiloxane Derivatives".
Nagy Sandor
Tyrell John A.
Lyondell Petrochemical Company
Wu David W.
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