Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1996-05-20
1999-08-31
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...
502152, 502155, 526127, 526160, 526943, 526161, 556 11, 556 43, 556 53, C08F 464
Patent
active
059453656
ABSTRACT:
Metallocene catalyst components having bis-fluorenyl ligands of a staggered conformation and processes for the isotactic propagation of a polymer chain from ethylenically unsaturated monomers. The catalyst components comprise bridged bis-fluorenyl metallocenes characterized by the following formula:
REFERENCES:
patent: 5036034 (1991-07-01), Ewen
patent: 5155080 (1992-10-01), Elder et al.
patent: 5191132 (1993-03-01), Patsidis et al.
patent: 5328969 (1994-07-01), Winter et al.
patent: 5329033 (1994-07-01), Spaleck et al.
patent: 5334677 (1994-08-01), Razavi et al.
patent: 5401817 (1995-03-01), Palackal et al .
patent: 5436305 (1995-07-01), Alt et al.
patent: 5451649 (1995-09-01), Zenk et al.
patent: 5459117 (1995-10-01), Ewen
Chen et al, Macromolecules, "C.sub.2v - and C.sub.2 -Symmetric ansa-Bis(fluorenyl)zirconocene Catalysts: Synthesis and .alpha.-Olefin Polymerization Catalysis," vol. 28, No. 16, (1995).
Vogel's Textbook of Practical Organic Chemistry, 4.sup.th Edition, 1978, pp. 671,755.
Newman et al, J. Org. Chem., "The Synthesis of 4-Bromophenanthrene," vol. 34, No. 6, pp. 1904-1906 (1969).
Barker et al, J. Chem. Soc., 3:6-Disubstituted Fluorenes. Part I. The Attempted Introduction of a 6:6'-Methylene Bridge Directly into 3:3'-Diaminodiphenyl and Some of its Derivatives, pp. 2034-2036 (1953).
Barker, et al, J. Chem. Soc., 3:6-Disubstituted Fluorenes. Part II. The Preparation of 3:6-Diaminofluorene from Fluorene, and the Attempted Internuclear Cyclisation of Derivatives of 4:4'-Diaminodiphenylmethane, pp. 870-873 (1953).
Hawley's Condensed Chemical Dictionary, 11.sup.th Ed. Van Nostrand Reinhold, New York, 1987, pp. 89, 749.
Cheairs M. Norwood
Fina Technology, Inc.
Jackson William D.
Wheelington Jimmy D.
Wu David W.
LandOfFree
Stereorigid bis-fluorenyl metallocenes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stereorigid bis-fluorenyl metallocenes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stereorigid bis-fluorenyl metallocenes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2426445