Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1994-06-22
1995-04-11
Teskin, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526113, 526133, 526134, 526141, 526143, 526161, 526166, 5261691, 526283, 526308, 502103, 502111, 502117, 502124, 502125, 502167, 502172, C08G 6108, C08F 480
Patent
active
054059240
ABSTRACT:
An olefin metathesis catalyst system and process for the metathesis polymerization of cyclic olefins, such as dicyclopentadiene, are disclosed. The catalyst system comprises the reaction product of:
(a) an imido transition metal halide complex of formula: ##STR1## wherein Ar is C.sub.6-20 aryl, preferably phenyl; M is a transition metal selected from the second and third rows of Groups 5, 6, 7 and 8 of the Periodic Table (IUPAC 1989 convention) and including for example niobium, tantalum, molybdenum, tungsten, rhenium, ruthenium or osmium, preferably tungsten or molybdenum; R is independently halide, C.sub.1-20 alkyl, C.sub.1-12 alkoxy, C.sub.1-12 haloalkyl, C.sub.6-20 aryl, C.sub.6-20 aryloxy, cyano or combinations thereof; L is independently a complexing ligand selected from carbonyl, C.sub.1-12 alkoxy, C.sub.1-12 haloalkoxy, C.sub.1-12 alkyl ethers, including mono-, di- and higher ethers, C.sub.12 alkylnitriles, C.sub.5-20 pyridines, C.sub.3-36 tri(hydrocarbyl)phosphines; X is independently halide, preferably chloride; x is 2 to 4; r is independently 0 to 5; y is 0 to 3, preferably 0 or 1; and x+y=3, 4, or 5; and
(b) a biphenol of the formula: ##STR2## in which each Ar represents an aromatic ring-containing moiety having at least one hydroxyl group attached to an aromatic ring; each R is independently selected from C.sub.1-12 alkyl, aryl, halide, mono-, di or trihalo methyl, cyano and alkoxy; each n is independently 0-4; and m is independently 1-4; and the catalyst system further includes a co- catalyst.
REFERENCES:
patent: 4426502 (1984-01-01), Minchak
patent: 4681956 (1987-07-01), Schrock
patent: 4727215 (1988-02-01), Schrock
patent: 4729976 (1988-03-01), Sjardijn et al.
patent: 4810762 (1989-03-01), Sjardijn et al.
patent: 4899005 (1990-02-01), Lane et al.
patent: 4935394 (1990-06-01), Chang
patent: 5028672 (1991-07-01), Sjardijn et al.
patent: 5071812 (1991-12-01), Kelsey
patent: 5082909 (1992-01-01), Bell
patent: 5093441 (1992-03-01), Sjardijn et al.
patent: 5095082 (1992-03-01), Kelsey
patent: 5142006 (1992-08-01), Kelsey
patent: 5143992 (1992-09-01), Kelsey
patent: 5194534 (1993-03-01), Bell
Hackh's Chemical Dictionary, J. Grant (ed.) McGraw-Hill, Inc., N.Y., p. 27 (1969).
Fox et al., "Simple, High-Yield Syntheses of Molybdenum (VI) Bis(imido) Complexes of the Type Mo(NR).sub.2 C1.sub.2 (1,2-dimethoxyethane)", Inorganic Chemistry, V31, pp. 2287-2289, 1992.
A. D. Horton, R. R. Schrock, and J. H. Freudenberger, A High Yield Route to Rhenium(VII) Bis(Imido) Neopentylidene Complexes, Organometallics 1987, 6, 893-894.
R. R. Schrock, I. A. Winstock, A. D. Horton, A. H. Liu, and M. H. Schofield, Preparation of Rhenium(VII) Monoimido Alkylidyne Complexes and Metathesis of Acetylenes via Rhenacyclobutadiene Intermediates, J. Am. Chem. Soc., 1988, 110, 2686-2687.
J. T. Anhaus, T. P. Kee, M. H. Schofield, and R. R. Schrock, Planar "20-Electron" Osmium Imido Complexes. A Linear Imido Ligand Does Not Necessarily Donate Its Lone Pair of Electrons to the Metal, J. Am. Chem. Soc., 1990, 112, 1642-1643.
W. A. Nugent, Synthesis of Some d.degree. Organoimido Complexes of the Early Transition Metals, Inorg. Chem., 1983, 22, 965-969.
Yuan-Wei Chao, Pamela A. Wexler, and David E. Wigley, Preparation and Properties of Tantalum Imido Complexes and Their Reactions with Alkynes. Coordination Control through Multiple Metal-Ligand bonding, Inorg. Chem., 1989, 28, 3860-3868.
Shell Oil Company
Teskin Fred
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