US5780659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted indenyl unbridged metallocenes
Assignee: Phillips Petroleum Co
•
Filing: 1996-03-29
•
Granted: 1998-07-14
•
Expires: 2016-03-29
Abstract
Abstract Unbridged metallocenes of titanium, zirconium and hafnium having an unsubstituted cyclopentadienyl radical and an indenyl radical having in at least one of the 1, 2, or 3 positions a substitutent selected from hydrocarbon radicals and trialkylsilyl radicals, and their use in the polymerization of olefins.
Inventors
- 👤 Claudia Schmid
- 👤 Helmut G. Alt
- 👤 M. Bruce Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:59
CPC Classifications
C; C07; C07F; C07F17/00; C08; C08F; C08F10/00; C08F110/00; C08F110/04; C08F110/06; 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: 11
Claim 1
Independent Claim
120 words
An unbridged metallocene of the formula (In)(Cp)MQ 2 wherein In is a substituted indenyl radical having a substitutent in at least one of the 1, 2, or 3 positions, said substituents being selected from phenyl radical, alkyl radicals having 1 to 10 carbon atoms and trialkylsilyl radicals wherein the alkyl groups have 1 to 4 carbons; Cp is an unsubstituted cyclopentadienyl radical; M is a transition metal selected from the group consisting of titanium, zirconium, and hafnium; and each Q is the same or different and is selected from the group consisting of hydrocarbyl radicals having 1 to 12 carbon atoms, alkoxy radicals having 1 to 12 carbon atoms, aryloxy radicals having 6 to 12 carbon atoms, hydrogen, and halides.
Claim 2
Dependent Claim
120 words
An unbridged metallocene of the formula (In)(Cp)MQ 2 wherein In is a substituted indenyl radical having a substitutent in at least one of the 1, 2, or 3 positions, said substituents being selected from phenyl radical, alkyl radicals having 1 to 10 carbon atoms and trialkylsilyl radicals wherein the alkyl groups have 1 to 4 carbons; Cp is an unsubstituted cyclopentadienyl radical; M is a transition metal selected from the group consisting of titanium, zirconium, and hafnium; and each Q is the same or different and is selected from the group consisting of hydrocarbyl radicals having 1 to 12 carbon atoms, alkoxy radicals having 1 to 12 carbon atoms, aryloxy radicals having 6 to 12 carbon atoms, hydrogen, and halides.
Claim 3
Dependent Claim
12 words
A metallocene according to claim 1 wherein each Q is a halide.
Claim 4
Dependent Claim
11 words
A metallocene according to claim 2 wherein each Q is chloride.
Claim 5
Dependent Claim
10 words
A metallocene according to claim 3 wherein M is zirconium.
Claim 6
Dependent Claim
38 words
A metallocene according to claim 4 selected from the group consisting of (1-phenyl indenyl) (cyclopentadienyl) zirconium dichloride, (1,2,3-trimethyl indenyl) (cyclopentadienyl) zirconium dichloride, (2-methyl indenyl) (cyclopentadienyl) zirconium dichloride, (1-trimethylsilyl indenyl) (cyclopentadienyl) zirconium dichloride, and (1,2-dimethyl indenyl) (cyclopentadienyl) zirconium dichloride.
Claim 7
Dependent Claim
11 words
A metallocene according to claim 4 wherein (In) is (1,2,3-trimethyl indenyl).
Claim 8
Dependent Claim
11 words
A metallocene according to claim 4 wherein (In) is (1-phenyl indenyl).
Claim 9
Dependent Claim
11 words
A metallocene according to claim 4 wherein (In) is (1,3-dimethyl indenyl).
Claim 10
Dependent Claim
16 words
A metallocene according to claim 4 where each substitutent on the indenyl is a methyl group.
Claim 11
Dependent Claim
18 words
A metallocene according to claim 9 wherein the indenyl group has a methyl group in the one position.
References Cited (Backward Citations)
US5084534A
Cited
US5223467A
Cited
US5126303A
Cited
US5049535A
Cited
US5225092A
Cited
US5331054A
Cited
US5304622A
Cited
WO1994011406A1
Cited
US5646322A
Cited
US5543373A
Cited
US5594080A
Cited
EP0685495A1
Cited
US5498581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-07-13 | 2002-01-12 | 2002-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-13 | 2006-01-12 | 2006-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-13 | 2010-01-12 | 2010-07-14 | $7700.00 | Window Closed / Lapsed |