US5296434A
Expired / Lapsed
US
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Soluble catalyst systems for the preparation of polyalk-1-enes having high molecular weights
Assignee: Basell Polyolefine GmbH
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Filing: 1992-06-18
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Granted: 1994-03-22
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Expires: 2012-06-18
Abstract
Abstract Catalyst systems for the polymerization of C 2 -C 10 -alk-1-enes contain, as active components, a) a metallocene complex of the general formula I ##STR1## where M is titanium, zirconium, hafnium, vanadium, niobium or tantalum, X is halogen or C 1 --C 8 -alkyl, Y is carbon, phosphorus, sulfur, silicon or germanium, Z is C 1 -C 8 -alkyl, C 3 -C 10 -cycloalkyl or C 6 -C 10 -aryl, R 1 and R 2 are identical or different and are each C 1 -C 4 -alkyl, R 3 to R 6 are identical or different and are each hydrogen or C 1 -C 8 -alkyl, or two adjacent radicals R 3 and R 4 and R 5 and R 6 in each case together form a hydrocarbon ring system of 4 to 15 carbon atoms and n is 0, 1 or 2, and b) an open-chain or cyclic alumoxane compound of the general formula II or III ##STR2## where R 7 is C 1 -C 4 -alkyl and n is from 5 to 30. The novel catalyst systems are particularly suitable for the preparation of polyalk-1-enes having high molecular weights.
Inventors
- 👤 Eberhard Karl
- 👤 Werner Roell
- 👤 Hans Brintzinger
- 👤 Bernhard Rieger
- 👤 Udo Stehling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:09
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/04; C08F10/06; C07; C07F; C07F17/00; C08F110/00; C08F110/04; C08F110/06; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/639; C08F4/63912; C08F4/6392; C08F4/63922; C08F4/63927; Y; Y10; Y10S; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
154 words
A catalyst system for the polymerization of C 2 -C 10 -alk-1-enes, containing, as active components, a) a metallocene complex of the formula I ##STR6## where M is titanium, zirconium, hafnium, vanadium, niobium or tantalum, X is halogen or C 1 -C 8 -alkyl, Y is carbon, phosphorus, sulfur, silicon or germanium, Z is C 1 -C 8 -alkyl, C 3 -C 10 -cycloalkyl or C 6 -C 10 -aryl, R 1 and R 2 are identical or different and are each C 1 -C 4 -alkyl, two adjacent radicals R 3 and R 4 and R 5 and R 6 in each case together form,, a hydrocarbon ring system of 10 to 15 carbon atoms and n is 0, 1 or 2, and b) an open-chain or cyclic alumoxane compound of the formula II or III ##STR7## where R 7 is C 1 -C 4 -alkyl and m is from 5 to 30.
Claim 2
Dependent Claim
154 words
A catalyst system for the polymerization of C 2 -C 10 -alk-1-enes, containing, as active components, a) a metallocene complex of the formula I ##STR6## where M is titanium, zirconium, hafnium, vanadium, niobium or tantalum, X is halogen or C 1 -C 8 -alkyl, Y is carbon, phosphorus, sulfur, silicon or germanium, Z is C 1 -C 8 -alkyl, C 3 -C 10 -cycloalkyl or C 6 -C 10 -aryl, R 1 and R 2 are identical or different and are each C 1 -C 4 -alkyl, two adjacent radicals R 3 and R 4 and R 5 and R 6 in each case together form,, a hydrocarbon ring system of 10 to 15 carbon atoms and n is 0, 1 or 2, and b) an open-chain or cyclic alumoxane compound of the formula II or III ##STR7## where R 7 is C 1 -C 4 -alkyl and m is from 5 to 30.
Claim 3
Dependent Claim
15 words
A catalyst system as claimed in claim 1, in which M is hafnium or zirconium.
Claim 4
Dependent Claim
15 words
A catalyst system as claimed in claim 1, in which X is chlorine or bromine.
Claim 5
Dependent Claim
16 words
A catalyst system as claimed in claim 1, in which Y is carbon, sulfur or silicon.
Claim 6
Dependent Claim
26 words
A catalyst system as claimed in claim 1, wherein R 1 and R 2 are identical or different and are each methyl, ethyl, isopropyl or tert-butyl.
Claim 7
Dependent Claim
39 words
A catalyst system as claimed in claim 1, in which two adjacent radicals R 3 and R 4 and R 5 and R 6 in each case together form a hydrocarbon ring system of 10 to 12 carbon atoms.
Claim 8
Dependent Claim
50 words
A catalyst system as claimed in claim 1, in which the metallocene complex a) and the alumoxane compound b) are used in amounts such that the atomic ratio of aluminum from the alumoxane b) to the transition metal from the metallocene complex a) is from 10:1 to 10 6 :1.
Claim 9
Dependent Claim
29 words
A catalyst system as claimed in claim 1, obtainable by mixing the metallocene complex a) and the alumoxane compound b) for from 5 to 60 minutes before the polymerization.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-21 | 1997-09-20 | 1998-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-21 | 2001-09-20 | 2002-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-21 | 2005-09-20 | 2006-03-22 | $7700.00 | Window Closed / Lapsed |