US5539124A
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Polymerization catalysts based on transition metal complexes with ligands containing pyrrolyl ring
Assignee: Equistar Chemicals LP
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Filing: 1994-12-19
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Granted: 1996-07-23
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Expires: 2014-12-19
Abstract
Abstract Disclosed is an azametallocene polymerization catalyst having the general formula ##STR1## where L is a ligand, or mixture of ligands, each having 4 to 30 carbon atoms and containing at least two fused rings, one of which is a pyrrolyl ring, Cp is a ligand containing a cyclopentadienyl group, B is a Lewis acid, Y is a halogen, alkoxy from C 1 to C 20 , siloxy from C 1 to C 20 , or mixtures thereof, M is titanium, zirconium, or mixtures thereof, m is 1 to 4, and n is 0 to 2, p is 0 to 2, q is 0 to 1, and m+n+q=4. The catalyst is useful in polymerizing unsaturated olefinic monomers such as ethylene.
Inventors
- 👤 Bradley P. Etherton
- 👤 Sandor Nagy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:23
CPC Classifications
C; C08; C08F; C08F10/00; C07; C07F; C07F7/00; C07F7/003; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65912; C08F4/6592
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
156 words
A catalyst comprising a compound having the general formula ##STR11## where L is a ligand, or mixture of ligands, each having 4 to 30 carbon atoms and containing at least two fused rings, one of which is a pyrrolyl ring, Cp is a ligand containing a cyclopentadienyl group, where two L ligands or an L and a Cp ligand can be bonded to each other via a bridging group, B is a Lewis base, Y is selected from the group consisting of halogen, alkoxy from C 1 to C 20 , siloxy from C 1 to C 20 , N(R 1 ) 2 , and mixtures thereof, M is selected from the group consisting of titanium, zirconium, and mixtures thereof, R 1 is alkyl from C 1 to C 20 , m is 2 to 4, n is 0 or 1, p is 0 or 2, q is 0 or 1, m+n+q=4, and m+q=3 or 4.
Claim 2
Dependent Claim
156 words
A catalyst comprising a compound having the general formula ##STR11## where L is a ligand, or mixture of ligands, each having 4 to 30 carbon atoms and containing at least two fused rings, one of which is a pyrrolyl ring, Cp is a ligand containing a cyclopentadienyl group, where two L ligands or an L and a Cp ligand can be bonded to each other via a bridging group, B is a Lewis base, Y is selected from the group consisting of halogen, alkoxy from C 1 to C 20 , siloxy from C 1 to C 20 , N(R 1 ) 2 , and mixtures thereof, M is selected from the group consisting of titanium, zirconium, and mixtures thereof, R 1 is alkyl from C 1 to C 20 , m is 2 to 4, n is 0 or 1, p is 0 or 2, q is 0 or 1, m+n+q=4, and m+q=3 or 4.
Claim 3
Dependent Claim
10 words
A catalyst according to claim 1 wherein M is titanium.
Claim 4
Dependent Claim
10 words
A catalyst according to claim 1 wherein M is zirconium.
Claim 5
Dependent Claim
10 words
A catalyst according to claim 1 wherein Y is halogen.
Claim 6
Dependent Claim
10 words
A catalyst according to claim 4 wherein Y is chlorine.
Claim 7
Dependent Claim
48 words
A catalyst according to claim 1 wherein L is indolyl or substituted indolyl and has the formula ##STR12## where each R is independently selected from hydrogen, alkyl from C 1 to C 10 , and aryl from C 6 to C 10 and s is 1 to 4.
Claim 8
Dependent Claim
48 words
A catalyst according to claim 1 wherein L is carbazolyl or substituted carbazolyl and has the formula ##STR13## where each R is independently selected from hydrogen, alkyl from C 1 to C 10 , and aryl from C 6 to C 10 and s is 1 to 4.
Claim 9
Dependent Claim
10 words
A catalyst according to claim 1 wherein m is 3.
Claim 10
Dependent Claim
10 words
A catalyst according to claim 1 wherein m is 4.
Claim 11
Dependent Claim
12 words
A catalyst according to claim 1 in combination with an organometallic cocatalyst.
Claim 12
Dependent Claim
13 words
A catalyst according to claim 10 wherein said organometallic cocatalyst is an aluminoxane.
Claim 13
Dependent Claim
15 words
A catalyst according to claim 10 in combination with one or more monomers polymerizable therewith.
Claim 14
Dependent Claim
11 words
A catalyst according to claim 12 wherein said monomer is ethylene.
Claim 15
Dependent Claim
19 words
A method of polymerizing an unsaturated olefinic monomer comprising contacting said monomer with the catalyst according to claim 10.
Claim 16
Dependent Claim
45 words
A catalyst comprising a compound having the general formula [L].sub.m --M--[X].sub.4-m where L is a ligand containing an indolyl or carbazolyl group, M is selected from the group consisting of titanium, zirconium, and mixtures thereof, X is halogen, and m is 2, 3, or 4.
Claim 17
Dependent Claim
45 words
A catalyst comprising a compound having the general formula [L].sub.m --M--[X].sub.4-m where L is a ligand containing an indolyl or carbazolyl group, M is selected from the group consisting of titanium, zirconium, and mixtures thereof, X is halogen, and m is 2, 3, or 4.
Claim 18
Dependent Claim
10 words
A catalyst according to claim 15 wherein M is titanium.
Claim 19
Dependent Claim
10 words
A catalyst according to claim 15 wherein M is zirconium.
Claim 20
Dependent Claim
10 words
A catalyst according to claim 15 wherein X is chlorine.
Claim 21
Dependent Claim
45 words
A catalyst comprising a compound having the general formula [L].sub.4 --M where L is carbazolyl or indolyl with a C 1 to C 4 alkyl in the 2 position, the 7 position, or both the 2 and 7 positions, and M is titanium or zirconium.
Claim 22
Dependent Claim
45 words
A catalyst comprising a compound having the general formula [L].sub.4 --M where L is carbazolyl or indolyl with a C 1 to C 4 alkyl in the 2 position, the 7 position, or both the 2 and 7 positions, and M is titanium or zirconium.
Claim 23
Dependent Claim
85 words
A catalyst comprising a compound having the general formula [L].sub.m --M--[X].sub.n where L is a ligand, or mixture of ligands, each having 4 to 30 carbon atoms and containing at least two fused rings, one of which is a pyrrolyl ring, where two L ligands can be bonded to each other via a bridging group, X is halogen, M is selected from the group consisting of titanium, zirconium, and mixtures thereof, m is 2 to 4, n is 0 to 2, and m+n is 4.
Claim 24
Dependent Claim
85 words
A catalyst comprising a compound having the general formula [L].sub.m --M--[X].sub.n where L is a ligand, or mixture of ligands, each having 4 to 30 carbon atoms and containing at least two fused rings, one of which is a pyrrolyl ring, where two L ligands can be bonded to each other via a bridging group, X is halogen, M is selected from the group consisting of titanium, zirconium, and mixtures thereof, m is 2 to 4, n is 0 to 2, and m+n is 4.
Claim 25
Dependent Claim
14 words
A catalyst according to claim 20 wherein m is 3 and n is 1.
Claim 26
Dependent Claim
14 words
A catalyst according to claim 20 wherein m is 4 and n is 0.
References Cited (Backward Citations)
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