Carbon and/or silicon bridged binuclear metallocene catalyst for

Details Carbon and/or silicon bridged binuclear metallocene catalyst for Carbon and/or silicon bridged binuclear metallocene catalyst for

1997-04-28

2000-01-04

Bell, Mark L.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

502153, 502155, 502156, 502158, 502103, 502117, 526 11, 526 12, 526 52, 526 53, 526160, 526943, B01J 3100, C07F 700, C07F 728, C07F 1700

Patent

active

060109742

ABSTRACT:
An alkylene and/or silylene bridged binuclear metallocene catalyst for styrene polymerization is represented by the following formula (I): ##STR1## where M.sup.1 and M.sup.2 are the same or different transition metal of Group IVb of the Periodic Table; Cp.sup.1 and Cp.sup.2 are the same or different cyclopentadienyl; alkyl, alkoxy, silyl or halogen substituted cyclopentadienyl; indenyl; alkyl, alkoxy, silyl or halogen substituted indenyl; fluorenyl; or alkyl, alkoxy, silyl or halogen substituted fluorenyl, which is capable of .pi.-electron, .eta..sup.5 -bonding with M.sup.1 or M.sup.2 ; each of E.sup.1, E.sup.2 and E.sup.3, independently of one another, is a carbon atom or a silicon atom; m, p and q are integers of 0 to 15 and m+p+q.gtoreq.1; each of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6, independently of one another, is a hydrogen, an alkyl, an aryl, an alkoxy or a halogen; X is a hydrogen, an alkyl, an alkoxy or a halogen; and n is 3. M.sup.1 and M.sup.2 may also be in cardin form by mixture of (I) with a compound which abstructs an X gray from each metal atom and substitution then with non-coordinating anions.

REFERENCES:
patent: 3426053 (1969-02-01), Rosenberg
patent: 3849459 (1974-11-01), Maitlis et al.
patent: 4024169 (1977-05-01), Pez
patent: 4361497 (1982-11-01), Boldt et al.
patent: 5372980 (1994-12-01), Davis
patent: 5585508 (1996-12-01), Kuber et al.
patent: 5627117 (1997-05-01), Mukaiyama et al.
patent: 5770666 (1998-06-01), Hamura et al.
patent: 5770755 (1998-06-01), Schertl et al.
patent: 5807938 (1998-09-01), Kaneko et al.
patent: 5880302 (1999-03-01), Hermann et al.
patent: 5892079 (1999-04-01), Wilson, Jr.
H. Brintzinget et al., J. Am. Chem. Soc., vol. 92, No. 21, pp. 6182-6185, Oct. 1970.
G. Pez et al., J. Am. Chem. Soc., vol. 101, No. 23, pp. 6933-6937, Nov. 1979.

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