US4130503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphite in MgX2 supported TiX3 /AlCl3 catalyst system
Assignee: Phillips Petroleum Co
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Filing: 1977-12-23
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Granted: 1978-12-19
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Expires: 1997-12-23
Abstract
Abstract A catalyst system is made up of a catalyst and a cocatalyst. The catalyst component comprises a magnesium chloride support, a titanium trichloride, an aluminum trichloride and an organic phosphite. The cocatalyst comprises an organoaluminum compound. Exemplary of such a system is a MgCl 2 supported TiCl 3 . 1/3AlCl 3 plus triphenyl phosphite as the catalyst and triethylaluminum plus diethylaluminum chloride and ethyl anisate as the cocatalyst. Such catalyst systems give both high productivity and low solubles in the polymerization of propylene. For ethylene polymerization, the cocatalyst can simply be triethylaluminum.
Inventors
- 👤 Lawrence M. Fodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:12
CPC Classifications
C; C08; C08F; C08F10/00; C08F4/00; C08F4/02; C08F4/022
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
109 words
A catalyst which forms on mixing MgCl 2 , TiCl 3 , AlCl 3 and an organic phosphite to form a first component which first component is combined with a cocatalyst comprising an organoaluminum compound, said MgCl 2 being present in an amount within the range of 50 to 95 weight percent, said Ti Cl 3 being present in an amount within the range of 2 to 20 weight percent, said Al Cl 3 being present in an amount of 0.1 to 10 weight percent and said organic phosphite being present in an amount of 1 to 20 weight percent, based on the total weight of said first component.
Claim 2
Dependent Claim
109 words
A catalyst which forms on mixing MgCl 2 , TiCl 3 , AlCl 3 and an organic phosphite to form a first component which first component is combined with a cocatalyst comprising an organoaluminum compound, said MgCl 2 being present in an amount within the range of 50 to 95 weight percent, said Ti Cl 3 being present in an amount within the range of 2 to 20 weight percent, said Al Cl 3 being present in an amount of 0.1 to 10 weight percent and said organic phosphite being present in an amount of 1 to 20 weight percent, based on the total weight of said first component.
Claim 3
Dependent Claim
27 words
A catalyst according to claim 1 wherein said cocatalyst is formed by contacting a trialkyl aluminum compound, a dihydrocarbylaluminum chloride, and a para-substituted benzoic acid alkyl ester.
Claim 4
Dependent Claim
19 words
A catalyst according to claim 2 wherein said cocatalyst is formed by contacting triethylaluminum, diethylaluminum chloride, and ethyl anisate.
Claim 5
Dependent Claim
12 words
A composition according to claim 3 wherein said phosphite is triphenyl phosphite.
Claim 6
Dependent Claim
21 words
A composition according to claim 4 wherein a mole ratio of said triethylaluminum-diethylaluminum chloride:ethyl anisate is within the range of 2-7:2-5:1.
Claim 7
Dependent Claim
26 words
A catalyst according to claim 5 wherein said TiCl 3 and AlCl 3 are TiCl 3 .1/3AlCl 3 formed by reduction of TiCl 4 with aluminum.
Claim 8
Dependent Claim
27 words
A catalyst according to claim 6 formed by ball milling said MgCl 2 , TiCl 3 , AlCl 3 , and phosphite to form said first component.
Claim 9
Dependent Claim
14 words
A catalyst according to claim 1 wherein said cocatalyst comprises a trialkyl aluminum compound.
Claim 10
Dependent Claim
13 words
A catalyst according to claim 8 wherein said trialkyl aluminum compound is triethylaluminum.
Claim 11
Dependent Claim
29 words
A catalyst according to claim 1 wherein a mole ratio of said organoaluminum compound to said TiCl 3 and AlCl 3 is within the range of 50:1 to 400:1.
Claim 12
Dependent Claim
49 words
A catalyst according to claim 1 wherein said first component comprises 70 to 90 weight percent of said MgCl 2 , 4 to 12 weight percent of said TiCl 3 , 1 to 4 weight percent of said AlCl 3 and 5 to 15 weight percent of said phosphite.
Claim 13
Dependent Claim
29 words
A catalyst according to claim 1 wherein said first component is formed by milling under intensive conditions, said MgCl 2 , TiCl 3 , AlCl 3 , and phosphite.
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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) | 1981-12-18 | 1982-06-19 | 1982-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-18 | 1986-06-19 | 1986-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-18 | 1990-06-19 | 1990-12-19 | $7700.00 | Window Closed / Lapsed |