US4347161A
Expired / Lapsed
US
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Polymerization of olefins
Assignee: Phillips Petroleum Co
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Filing: 1980-08-07
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Granted: 1982-08-31
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Expires: 2000-08-07
Abstract
Abstract A catalyst composition can be obtained by treating a magnesium halide-tetravalent, halogenated titanium compound mixture with a magnesium alkoxide. The catalyst composition can be combined with a metallic hydride or, preferably, an organometallic co-catalyst, e.g., an organoaluminum compound, to form a catalyst useful for the polymerization of alpha-olefins.
Inventors
- 👤 Richard E. Dietz
- 👤 Max P. McDaniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:07
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
77 words
A catalyst composition obtained by milling a magnesium alkoxide with an intimate mixture of a magnesium dihalide and a tetravalent, halogenated titanium compound represented by the formula TiX a (OR') 4-a in which X stands for bromine, chlorine or iodine or mixtures thereof, a is an integer of 1 to 4 and R' is an alkyl, cycloalkyl, or aryl group and combinations thereof containing from 1 to about 20 carbon atoms in the presence of chlorinated silica.
Claim 2
Dependent Claim
77 words
A catalyst composition obtained by milling a magnesium alkoxide with an intimate mixture of a magnesium dihalide and a tetravalent, halogenated titanium compound represented by the formula TiX a (OR') 4-a in which X stands for bromine, chlorine or iodine or mixtures thereof, a is an integer of 1 to 4 and R' is an alkyl, cycloalkyl, or aryl group and combinations thereof containing from 1 to about 20 carbon atoms in the presence of chlorinated silica.
Claim 3
Dependent Claim
22 words
A catalyst composition in accordance with claim 1 wherein the magnesium alkoxide is rotary ball milled with the magnesium halide-titanium compound mixture.
Claim 4
Dependent Claim
23 words
A catalyst composition in accordance with claim 1 wherein said chlorinated silica has a particle size of no greater than about 250 microns.
Claim 5
Dependent Claim
26 words
A catalyst composition in accordance with claim 1 wherein said magnesium halide compound is magnesium chloride and said tetravalent, halogenated titanium compound is a titanium tetrahalide.
Claim 6
Dependent Claim
15 words
A catalyst composition in accordance with claim 4 wherein said titanium tetrahalide is titanium tetrachloride.
Claim 7
Dependent Claim
50 words
A catalyst composition in accordance with claim 1 wherein the molar ratio of the magnesium halide to the titanium compound is in the range of about 2:1 to about 25:1 and the molar ratio of titanium compound to magnesium alkoxide is in the range of about 0.1:1 to about 10:1.
Claim 8
Dependent Claim
50 words
A catalyst composition in accordance with claim 7 wherein the molar ratio of the magnesium halide to the titanium compound is in the range of about 3:1 to about 15:1 and the molar ratio of titanium compound to magnesium alkoxide is in the range of about 0.5:1 to about 5:1.
Claim 9
Independent Claim
34 words
A method for preparing a catalyst composition comprising preparing a milled mixture of a magnesium halide and a tetravalent, halogenated titanium compound, and then milling the mixture with a magnesium alkoxide and chlorinated silica.
Claim 10
Independent Claim
34 words
A method for preparing a catalyst composition comprising preparing a milled mixture of a magnesium halide and a tetravalent, halogenated titanium compound, and then milling the mixture with a magnesium alkoxide and chlorinated silica.
Claim 11
Dependent Claim
23 words
A method in accordance with claim 8 wherein the magnesium halide and titanium compound mixture is rotary ball milled with the magnesium alkoxide.
Claim 12
Dependent Claim
22 words
A method in accordance with claim 8 wherein the milling times are in the range of about 5 to about 200 hours.
Claim 13
Dependent Claim
114 words
A catalyst for the polymerization and copolymerization of olefins comprising two components A and B wherein component A is obtained by milling a milled mixture of a magnesium dihalide and a tetravalent, halogenated titanium compound, represented by the formula TiX a (OR') 4-a in which X stands for bromine, chlorine or iodine or mixtures thereof, a is an integer of 1 to 4 and R' is an alkyl, cycloalkyl, or aryl group and combinations thereof containing from 1 to about 20 carbon atoms, and chlorinated silica, and component B is a metallic hydride or organometallic compound wherein said metal is selected from an element of Groups IA, IIA, and IIIA of the Periodic Table.
Claim 14
Dependent Claim
114 words
A catalyst for the polymerization and copolymerization of olefins comprising two components A and B wherein component A is obtained by milling a milled mixture of a magnesium dihalide and a tetravalent, halogenated titanium compound, represented by the formula TiX a (OR') 4-a in which X stands for bromine, chlorine or iodine or mixtures thereof, a is an integer of 1 to 4 and R' is an alkyl, cycloalkyl, or aryl group and combinations thereof containing from 1 to about 20 carbon atoms, and chlorinated silica, and component B is a metallic hydride or organometallic compound wherein said metal is selected from an element of Groups IA, IIA, and IIIA of the Periodic Table.
Claim 15
Dependent Claim
20 words
A catalyst in accordance with claim 11 wherein the magnesium alkoxide is rotary milled with said magnesium halide-titanium compound mixture.
Claim 16
Dependent Claim
22 words
A catalyst in accordance with claim 11 wherein said chlorinated silica has a particle size of no greater than about 250 microns.
Claim 17
Dependent Claim
31 words
A catalyst in accordance with claim 11 wherein said magnesium halide compound of component A is magnesium chloride and said tetravalent, halogenated titanium compound of component A is a titanium tetrahalide.
Claim 18
Dependent Claim
14 words
A catalyst in accordance with claim 14 wherein said titanium tetrahalide is titanium tetrachloride.
Claim 19
Dependent Claim
14 words
A catalyst in accordance with claim 11 wherein component B is an organoaluminum compound.
Claim 20
Dependent Claim
30 words
A catalyst in accordance with claim 16 wherein the organoaluminum compound is selected from the group consisting of trimethylaluminum, triethylaluminum, tridodecylaluminum, tricyclohexylaluminum, triphenylaluminum, diethylaluminum chloride, diisobutylaluminum hydride and ethylaluminum dibromide.
Claim 21
Dependent Claim
49 words
A catalyst in accordance with claim 11 wherein the molar ratio of the magnesium halide to the titanium compound is in the range of about 2:1 to about 25:1 and the molar ratio of titanium compound to magnesium alkoxide is in the range of about 0.1:1 to about 10:1.
Claim 22
Dependent Claim
49 words
A catalyst in accordance with claim 18 wherein the molar ratio of the magnesium halide to the titanium compound is in the range of about 3:1 to about 15:1 and the molar ratio of titanium compound to magnesium alkoxide is in the range of about 0.5:1 to about 5:1.
Claim 23
Independent Claim
123 words
A method for the preparation of a catalyst which comprises forming a component A by preparing milled mixture of a magnesium dihalide and a tetravalent, halogenated titanium compound represented by the formula TiX a (OR') 4-a in which X stands for bromine, chlorine or iodine or mixtures thereof, a is an integer of 1 to 4 and R' is an alkyl, cycloalkyl, or aryl group and combinations thereof containing from 1 to about 20 carbon atoms and then milling said mixture with a magnesium alkoxide and chlorinated silica, and then combining component A with a component B which is a metallic hydride or organometallic compound wherein said metal is selected from an element of Groups IA, IIA, and IIIA of the Periodic Table.
Claim 24
Independent Claim
123 words
A method for the preparation of a catalyst which comprises forming a component A by preparing milled mixture of a magnesium dihalide and a tetravalent, halogenated titanium compound represented by the formula TiX a (OR') 4-a in which X stands for bromine, chlorine or iodine or mixtures thereof, a is an integer of 1 to 4 and R' is an alkyl, cycloalkyl, or aryl group and combinations thereof containing from 1 to about 20 carbon atoms and then milling said mixture with a magnesium alkoxide and chlorinated silica, and then combining component A with a component B which is a metallic hydride or organometallic compound wherein said metal is selected from an element of Groups IA, IIA, and IIIA of the Periodic Table.
Claim 25
Dependent Claim
23 words
A method in accordance with claim 20 wherein the magnesium halide and titanium compound mixture is rotary ball milled with the magnesium alkoxide.
Claim 26
Dependent Claim
22 words
A method in accordance with claim 20 wherein the milling times are in the range of about 5 to about 200 hours.
Claim 27
Dependent Claim
21 words
A method in accordance with claim 20 wherein said chlorinated silica is added to the composition along with the magnesium alkoxide.
References Cited (Backward Citations)
US4240929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |