Patent US4791086A successfully refreshed from Google Patents.
US4791086A
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Olefin polymerization
Assignee: Phillips Petroleum Co
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Filing: 1987-07-01
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Granted: 1988-12-13
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Expires: 2007-07-01
Abstract
Abstract A process for producing a novel-highly active lanthanide containing catalyst comprising the product produced by reacting a lanthanide hydride, a Lewis acid, and an electron donor ligand with an organoaluminum cocatalyst component and its use in the polymerization of olefins, especially olefins such as ethylene and 1,3-butadiene.
Inventors
- 👤 Gene H. C. Yeh
- 👤 Henry L. Hsieh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:44
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F10/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
125 words
A polymerization catalyst system comprising (1) a catalyst component A formed by admixing a rare earth metal hydride which is neodymium hydride, a Lewis acid selected from aluminum chloride and aluminum bromide and an electron donor ligand which is ethyl benzoate and (2) a cocatalyst component B comprising an organoaluminum compound in a mole ratio of organoaluminum compound to rare earth metal hydride ranging from about 10 to about 100 moles per mole and a mole ratio of organoaluminum compound to ligand of at least 1:1 and wherein the mole ratio of Lewis acid to rare earth metal hydride ranges from about 0.1 to about 10 and the mole ratio of said ligand to rare earth metal hydride is from about 1 to about 20.
Claim 2
Dependent Claim
125 words
A polymerization catalyst system comprising (1) a catalyst component A formed by admixing a rare earth metal hydride which is neodymium hydride, a Lewis acid selected from aluminum chloride and aluminum bromide and an electron donor ligand which is ethyl benzoate and (2) a cocatalyst component B comprising an organoaluminum compound in a mole ratio of organoaluminum compound to rare earth metal hydride ranging from about 10 to about 100 moles per mole and a mole ratio of organoaluminum compound to ligand of at least 1:1 and wherein the mole ratio of Lewis acid to rare earth metal hydride ranges from about 0.1 to about 10 and the mole ratio of said ligand to rare earth metal hydride is from about 1 to about 20.
Claim 3
Dependent Claim
27 words
A composition according to claim 1 wherein said organoaluminum cocatalyst component is one of a trihydrocarbylaluminum, dihydrocarbylaluminum halide, hydrocarbylaluminum dihalide, dihydrocarbylaluminum hydride, dihydrocarbylaluminum alkoxide, and hydrocarbylaluminum dialkoxide.
Claim 4
Dependent Claim
18 words
A composition according to claim 1 wherein said cocatalyst is one of diethylaluminum hydride, triethylaluminum or diisobutylaluminum hydride.
Claim 5
Dependent Claim
15 words
A catalyst system according to claim 3 wherein said catalyst component B is diethylaluminum hydride.
Claim 6
Dependent Claim
15 words
A catalyst system according to claim 3 wherein said catalyst component B is diisobutylaluminum hydride.
Claim 7
Dependent Claim
14 words
A catalyst system according to claim 3 wherein said catalyst component B is triethylaluminum.
Claim 8
Dependent Claim
108 words
A process for producing a catalyst for the polymerization of olefins comprising (1) combining a rare earth metal hydride which is neodymium hydride, a Lewis acid selected from aluminum chloride and aluminum bromide and an electron donor ligand which is ethyl benzoate in an inert liquid diluent under conditions to form a substantially liquid component, and (2) reacting the product of (1) with an organoaluminum compound to form a polymerization catalyst system in which the mole ratio of organoaluminum compound to rare earth metal hydride ranges from about 10 to about 100 moles per mole and a mole ratio of organoaluminum compound to ligand of at least 1:1.
Claim 9
Dependent Claim
108 words
A process for producing a catalyst for the polymerization of olefins comprising (1) combining a rare earth metal hydride which is neodymium hydride, a Lewis acid selected from aluminum chloride and aluminum bromide and an electron donor ligand which is ethyl benzoate in an inert liquid diluent under conditions to form a substantially liquid component, and (2) reacting the product of (1) with an organoaluminum compound to form a polymerization catalyst system in which the mole ratio of organoaluminum compound to rare earth metal hydride ranges from about 10 to about 100 moles per mole and a mole ratio of organoaluminum compound to ligand of at least 1:1.
Claim 10
Dependent Claim
40 words
A process according to claim 7 wherein the mole ratio of Lewis acid to rare earth metal hydride ranges from 0.1 to about 10 and a mole ratio of ligand to rare earth metal hydride ranges from 1 to 20.
Claim 11
Dependent Claim
27 words
A process according to claim 7 wherein the conditions under which said hydride, ligand, and Lewis acid are contacted ranges from about 25° to about 150° C.
Claim 12
Dependent Claim
26 words
A process according to claim 7 wherein the organoaluminum cocatalyst is one of a trihydrocarbylaluminum, dihydrocarbylaluminum halide, hydrocarbylaluminum dihalide, dihydrocarbylaluminum hydride, dihydrocarbylaluminum alkoxide, and hydrocarbylaluminum dialkoxide.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1991-12-13 | 1992-06-13 | 1992-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-13 | 1996-06-13 | 1996-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-13 | 2000-06-13 | 2000-12-13 | $7700.00 | Window Closed / Lapsed |