US3936431A
Expired / Lapsed
US
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Process for the polymerization of olefins and catalytic products
Assignee: Solvay SA
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Filing: 1973-03-26
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Granted: 1976-02-03
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Expires: 1993-03-26
Abstract
Abstract This invention relates to novel catalysts and cocatalysts for use in the polymerization and copolymerization of α-olefins, to a process for using such catalysts to polymerize and copolymerize α-olefins, and to the process of making such cocatalysts. The α-olefins are polymerized or copolymerized in the presence of a catalytic amount of a catalyst system comprising an organometallic compound of a metal of Groups Ia, IIa, IIb, IIIa, or IVa of the Periodic Table and a cocatalyst comprising the reaction product of a halogenated alumina and a derivative of a transistion metal of Groups IVb, Vb, and VIb of the Periodic Table, said halogenated alumina being formed by halogenating a complex oxide of aluminum and at least one other metal.
Inventors
- 👤 Luigi Reginato
- 👤 Charles Bienfait
- 👤 Jacques Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:09
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
97 words
A cocatalyst for use with an organometallic compound of a metal selected from the Groups Ia, IIa, IIb, IIIa and IVa of the Periodic Table to catalyze the polymerization and copolymerization of α-olefins consisting essentially of the reaction product of a fluorinated complex oxide having the general formula MgO.Al 2 O 3 with a derivative of titanium selected from the group consisting of halides, oxyhalides, alkoxyhalides, oxyalkoxides and alkoxides, said complex being fluorinated at a temperature of from about 100°C. to about 700°C. and said fluorinated complex having a F/Al atomic ratio of between 0.1 and 0.15.
Claim 2
Dependent Claim
97 words
A cocatalyst for use with an organometallic compound of a metal selected from the Groups Ia, IIa, IIb, IIIa and IVa of the Periodic Table to catalyze the polymerization and copolymerization of α-olefins consisting essentially of the reaction product of a fluorinated complex oxide having the general formula MgO.Al 2 O 3 with a derivative of titanium selected from the group consisting of halides, oxyhalides, alkoxyhalides, oxyalkoxides and alkoxides, said complex being fluorinated at a temperature of from about 100°C. to about 700°C. and said fluorinated complex having a F/Al atomic ratio of between 0.1 and 0.15.
Claim 3
Dependent Claim
25 words
The cocatalyst of claim 1 wherein the complex oxide is fluorinated at between about 300°C. and 400°C. and the F/Al atomic ratio is about 0.15.
Claim 4
Dependent Claim
80 words
A catalyst for the polymerization and copolymerization of α-olefins comprising a trialkyl aluminum and a cocatalyst consisting essentially of the reaction product of a fluorinated complex oxide having the general formula MgO.Al 2 O 3 with a derivative of titanium selected from the group consisting of halides, oxyhalides, alkoxyhalides, oxyalkoxides and alkoxides, said complex being fluorinated at a temperature of from about 100°C. to about 700°C. and said fluorinated complex having a F/Al atomic ratio of between 0.1 and 0.15.
Claim 5
Dependent Claim
80 words
A catalyst for the polymerization and copolymerization of α-olefins comprising a trialkyl aluminum and a cocatalyst consisting essentially of the reaction product of a fluorinated complex oxide having the general formula MgO.Al 2 O 3 with a derivative of titanium selected from the group consisting of halides, oxyhalides, alkoxyhalides, oxyalkoxides and alkoxides, said complex being fluorinated at a temperature of from about 100°C. to about 700°C. and said fluorinated complex having a F/Al atomic ratio of between 0.1 and 0.15.
Claim 6
Dependent Claim
25 words
The catalyst of claim 1 wherein the complex oxide is fluorinated at between about 300°C. and 400°C. and the F/Al atomic ratio is about 0.15.
Claim 7
Dependent Claim
19 words
The process for the polymerization and copolymerization of α-olefins in the presence of the catalytic system of claim 3.
Claim 8
Dependent Claim
19 words
The process for the polymerization and copolymerization of α-olefins in the presence of the catalytic system of claim 4.
Claim 9
Dependent Claim
98 words
A method for making the cocatalyst of claim 1 comprising the steps of reacting a complex oxide having the general formula MgO.Al 2 O 3 with a fluorinating agent at a temperature of from about 100°C to about 700°C for a time sufficient to give a fluorinated complex oxide having an atomic ratio of fluorine/aluminum of from about 0.1 to 0.15 and reacting said fluorinated complex oxide with a derivative of titanium selected from the group consisting of halides, oxyhalides, alkoxyhalides, oxyalkoxides and alkoxides for a time sufficient to chemically fix the titanium derivative to the fluorinated complex.
Claim 10
Dependent Claim
26 words
The method according to claim 7 wherein the complex oxide is fluorinated at between about 300°C and 400°C and the fluorine/aluminum atomic ratio is about 0.15.
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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) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |