US5279999A
Expired / Lapsed
US
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Catalyst composition
Assignee: Union Carbide Chemicals and Plastics Technology LLC
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Filing: 1992-10-27
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Granted: 1994-01-18
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Expires: 2012-10-27
Abstract
Abstract A catalyst composition obtained by contacting (a) a Group IVA metal compound of the general formula (Cp)pMeX4-p wherein Cp is, independently, cyclopentadienyl groups substituted with one or more hydrocarbyl groups, and at least one cyclopentadienyl group is substituted with a single, optionally substituted, aryl group, Me is a Group IVA metal, X is one or more non-cyclopentadienyl substituents attached to the Group IVA metal, wherein the substituents are hydrocarbyl groups, hydrocarboxy groups, hydrocarbamide groups, hydrogen or halogen, and p is an integer of from 1 to 4; and (b) an aluminoxane. Further, a process for polymerizing one or more alpha-olefins by contacting the one or more alpha-olefins with the catalyst composition of the invention to produce polymers.
Inventors
- 👤 Eric J. M. DeBoer
- 👤 Koen Steernberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:14
CPC Classifications
C; C07; C07F; C07F17/00; C08; C08F; C08F10/00; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65912; C08F4/6592; C08F4/65922; C08F4/65925; Y; Y10; Y10S; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
92 words
A catalyst composition comprising: (a) a Group IVA metal compound of the general formula (Cp).sub.p MeX.sub.4-p wherein Cp is, independently, cyclopentadienyl groups substituted with one or more hydrocarbyl groups and at least one cyclopentadienyl group is substituted with a single, substituted or unsubstituted aryl group, Me is a Group IVA metal, X is one or more non-cyclopentadienyl Group IVA metal substituents selected from the group consisting of hydrocarbyl groups, hydrocarboxy groups, hydrocarbamide groups, hydrogen, halogen, and mixtures thereof, and p is an integer of from 1 to 4; and (b) an aluminoxane.
Claim 2
Dependent Claim
92 words
A catalyst composition comprising: (a) a Group IVA metal compound of the general formula (Cp).sub.p MeX.sub.4-p wherein Cp is, independently, cyclopentadienyl groups substituted with one or more hydrocarbyl groups and at least one cyclopentadienyl group is substituted with a single, substituted or unsubstituted aryl group, Me is a Group IVA metal, X is one or more non-cyclopentadienyl Group IVA metal substituents selected from the group consisting of hydrocarbyl groups, hydrocarboxy groups, hydrocarbamide groups, hydrogen, halogen, and mixtures thereof, and p is an integer of from 1 to 4; and (b) an aluminoxane.
Claim 3
Dependent Claim
17 words
The catalyst composition of claim 1 wherein the aryl group is substituted with one or more groups.
Claim 4
Dependent Claim
15 words
The catalyst composition according to claim 2, wherein the aryl group is a phenyl group.
Claim 5
Dependent Claim
36 words
The catalyst composition according to claim 3, wherein the phenyl group is substituted with one or more groups selected from the group consisting of cycloalkyl groups, aryl groups, alkyloxy groups, dialkylamino groups, halogenated hydrocarbyls and halides.
Claim 6
Dependent Claim
16 words
The catalyst composition according to claim 4 wherein the group is a dialkylamino or alkyloxy groups.
Claim 7
Dependent Claim
28 words
The catalyst composition according to claim 5 wherein group is substituted with one or more shielding groups selected from the group consisting of alkyl groups and cycloalkyl groups.
Claim 8
Dependent Claim
21 words
The catalyst composition according to claim 6, wherein the shielding group is a t-alkyl group having up to 10 carbon atoms.
Claim 9
Dependent Claim
15 words
The catalyst composition according claim 7, wherein the Group IVA metal is zirconium or hafnium.
Claim 10
Dependent Claim
14 words
The catalyst composition according to claim 8 wherein the Group IVA metal is zirconium.
Claim 11
Dependent Claim
11 words
The catalyst composition according to claim 9, wherein X is chlorine.
Claim 12
Dependent Claim
39 words
The catalyst composition according to claim 10, wherein the molar ratio of aluminoxane to the Group IVA metal compound is within the range of from 2 to 10000, calculated as gram atom aluminoxane per gram atom Group IVA metal.
Claim 13
Dependent Claim
39 words
The catalyst composition according to claim 11, wherein the Group IVA metal compound is bis(phenylcyclopentadienyl)zirconium dichloride, bis[(4-t-butylphenyl)cyclopentadienyl]zirconium dichloride, bis[(2-methylphenyl)cyclopentadienyl]zirconium dichloride, bis[(2-ethylphenyl)cyclopentadienyl]zirconium dichloride, bis[(2-i-propylphenyl)cyclopentadienyl]zirconium dichloride, bis[(4-chlorophenyl)cyclopentadienyl]zirconium dichloride, bis[(3,5-di-t-butylphenyl)cyclopentadienyl]zirconium dichloride, bis[(3,5-di-t-butyl-4-methyloxyphenyl)cyclopentadienyl]zirconium dichloride, (cyclopentadienyl)(3,5-di-t-butyl-4-methoxyphenylcyclopentadienyl)zirconium dichloride, bis(3,5-di-t-butyl-2-methoxyphenylcyclopentadienyl)zirconium dichloride, (cyclopentadienyl)-(3,5-di-t-butyl-2-methoxyphenylcyclopentadienyl)zirconium dichloride or bis(3-methoxyphenylcyclopentadienyl)zirconium dichloride.
Claim 14
Dependent Claim
18 words
The catalyst composition according to claim 12, wherein the aluminoxane is methylaluminoxane, ethylaluminoxane, isopropylaluminoxane, isobutylaluminoxane or mixtures thereof.
References Cited (Backward Citations)
US4530914A
Cited
US4937299A
Cited
US5077255A
Cited
EP0283739A2
Cited
US5126301A
Cited
EP0316155A2
Cited
US5086025A
Cited
US5126303A
Cited
US5104956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-01-17 | 1997-07-19 | 1998-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-17 | 2001-07-19 | 2002-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-17 | 2005-07-19 | 2006-01-18 | $7700.00 | Window Closed / Lapsed |