US4362648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of olefins
Assignee: Phillips Petroleum Co
•
Filing: 1980-12-04
•
Granted: 1982-12-07
•
Expires: 2000-12-04
Abstract
Abstract A catalyst composition can be obtained by gently milling a milled mixture of magnesium chloride and a titanium tetrahalide 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
- 👤 Oscar D. Nowlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:10
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/904
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
53 words
A catalyst composition obtained by gently milling a magnesium alkoxide with a milled mixture of a magnesium halide compound and a titanium tetrahalide said gently milling being characterized by up to about 300 shaking, rocking or rotating movements per minute of a receptacle containing grinding elements, said magnesium alkoxide and said milled mixture.
Claim 2
Dependent Claim
53 words
A catalyst composition obtained by gently milling a magnesium alkoxide with a milled mixture of a magnesium halide compound and a titanium tetrahalide said gently milling being characterized by up to about 300 shaking, rocking or rotating movements per minute of a receptacle containing grinding elements, said magnesium alkoxide and said milled mixture.
Claim 3
Dependent Claim
20 words
A catalyst composition in accordance with claim 1 wherein the magnesium alkoxide is rotary ball milled with the milled mixture.
Claim 4
Dependent Claim
17 words
A catalyst composition in accordance with claim 1 wherein a powdered diluent is added to the composition.
Claim 5
Dependent Claim
23 words
A catalyst composition in accordance with claim 3 wherein said powdered diluent has a particle size of no greater than about 250 microns.
Claim 6
Dependent Claim
15 words
A catalyst composition in accordance with claim 3 wherein said powdered diluent is polyarylene sulfide.
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 tetrahalide is in the range of about 2:1 to about 25:1 and the molar ratio of titanium tetrahalide 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 5 wherein the molar ratio of the magnesium chloride to the titanium tetrahalide is in the range of about 3:1 to about 15:1 and the molar ratio of titanium tetrahalide to magnesium alkoxide is in the range of about 0.5:1 to about 5:1.
Claim 9
Independent Claim
59 words
A method for preparing a catalyst composition comprising preparing a milled mixture of magnesium chloride and a titanium tetrachloride, and then gently milling the mixture with a magnesium alkoxide said gently milling being characterized by up to about 300 shaking, rocking or rotating movements per minute of a receptacle containing grinding elements, said magnesium alkoxide and said milled mixture.
Claim 10
Independent Claim
59 words
A method for preparing a catalyst composition comprising preparing a milled mixture of magnesium chloride and a titanium tetrachloride, and then gently milling the mixture with a magnesium alkoxide said gently milling being characterized by up to about 300 shaking, rocking or rotating movements per minute of a receptacle containing grinding elements, said magnesium alkoxide and said milled mixture.
Claim 11
Dependent Claim
19 words
A method in accordance with claim 8 wherein said milled 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
22 words
A method in accordance with claim 10 wherein a powdered diluent is added to the composition subjected to said gently milling operation.
Claim 14
Dependent Claim
21 words
A method in accordance with claim 11 wherein said powdered diluent is added to the composition along with the magnesium alkoxide.
Claim 15
Dependent Claim
18 words
A method in accordance with claim 12 wherein the powdered diluent added to the compositions is poly(arylene sulfide).
Claim 16
Dependent Claim
95 words
A catalyst for the polymerization and copolymerization of olefins comprising two components A and B wherein: component A is obtained by gently milling magnesium alkoxide with a milled mixture of a magnesium chloride and a titanium tetrahalide said gently milling being characterized by up to about 300 shaking, rocking or rotating movements per minute of a receptacle containing grinding elements, said magnesium alkoxide and said milled mixture, 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 17
Dependent Claim
95 words
A catalyst for the polymerization and copolymerization of olefins comprising two components A and B wherein: component A is obtained by gently milling magnesium alkoxide with a milled mixture of a magnesium chloride and a titanium tetrahalide said gently milling being characterized by up to about 300 shaking, rocking or rotating movements per minute of a receptacle containing grinding elements, said magnesium alkoxide and said milled mixture, 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 18
Dependent Claim
19 words
A catalyst in accordance with claim 14 wherein the magnesium alkoxide is rotary ball milled with said milled mixture.
Claim 19
Dependent Claim
23 words
A catalyst composition in accordance with claim 14 wherein a powdered diluent is added to the composition subjected to said gently milling operation.
Claim 20
Dependent Claim
22 words
A catalyst in accordance with claim 16 wherein said powdered diluent has a particle size of no greater than about 250 microns.
Claim 21
Dependent Claim
14 words
A catalyst in accordance with claim 16 wherein said powdered diluent is poly(arylene sulfide).
Claim 22
Dependent Claim
14 words
A catalyst in accordance with claim 18 wherein said titanium tetrahalide is titanium tetrachloride.
Claim 23
Dependent Claim
14 words
A catalyst in accordance with claim 18 wherein component B is an organoaluminum compound.
Claim 24
Dependent Claim
30 words
A catalyst in accordance with claim 20 wherein the organoaluminum compound is selected from the group consisting of trimethylaluminum, triethylaluminum, tridodecylaluminum, tricyclohexylaluminum, triphenylaluminum, diethylaluminum chloride, diisobutylaluminum hydride and ethylaluminum dibromide.
Claim 25
Dependent Claim
49 words
A catalyst in accordance with claim 18 wherein the molar ratio of the magnesium chloride to the titanium tetrahalide is in the range of about 2:1 to about 25:1 and the molar ratio of titanium tetrahalide to magnesium alkoxide is in the range of about 0.1:1 to about 10:1.
Claim 26
Dependent Claim
50 words
A catalyst in accordance with claim 22 wherein the molar ratio of the magnesium chloride to the titanium tetrahalide is in the range of about 3:1 to about 15:1 and the molar ratio of titanium tetrahalide compound to magnesium alkoxide is in the range of about 0.5:1 to about 5:1.
Claim 27
Independent Claim
103 words
A method for the preparation of a catalyst which comprises: forming a component A by preparing an intimate mixture by milling a magnesium chloride and a titanium tetrahalide and then gently milling said mixture with a magnesium alkoxide said gently milling being characterized by up to about 300 shaking, rocking or rotating movements per minute of a receptacle containing grinding elements, said magnesium alkoxide and said milled mixture, 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 28
Independent Claim
103 words
A method for the preparation of a catalyst which comprises: forming a component A by preparing an intimate mixture by milling a magnesium chloride and a titanium tetrahalide and then gently milling said mixture with a magnesium alkoxide said gently milling being characterized by up to about 300 shaking, rocking or rotating movements per minute of a receptacle containing grinding elements, said magnesium alkoxide and said milled mixture, 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 29
Dependent Claim
23 words
A method in accordance with claim 24 wherein the magnesium chloride and titanium tetrahalide mixture is rotary ball milled with the magnesium alkoxide.
Claim 30
Dependent Claim
22 words
A method in accordance with claim 24 wherein the milling times are in the range of about 5 to about 200 hours.
Claim 31
Dependent Claim
15 words
A method in accordance with claim 24 wherein powdered diluent is added to the composition.
Claim 32
Dependent Claim
21 words
A method in accordance with claim 27 wherein said powdered diluent is added to the composition along with the magnesium alkoxide.
Claim 33
Dependent Claim
18 words
A method in accordance with claim 27 wherein the powdered diluent added to the composition is poly(arylene sulfide).
Claim 34
Dependent Claim
48 words
A catalyst composition obtained by milling a magnesium alkoxide with a milled mixture of a magnesium halide compound and a titanium tetrahalide, said milling of magnesium alkoxide with said milled mixture being carried out by rotating a milling vessel at speeds ranging from about 10 to 200 rpm.
Claim 35
Dependent Claim
48 words
A catalyst composition obtained by milling a magnesium alkoxide with a milled mixture of a magnesium halide compound and a titanium tetrahalide, said milling of magnesium alkoxide with said milled mixture being carried out by rotating a milling vessel at speeds ranging from about 10 to 200 rpm.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-06 | 1986-06-07 | 1986-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-06 | 1990-06-07 | 1990-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-06 | 1994-06-07 | 1994-12-07 | $7700.00 | Window Closed / Lapsed |