US4450243A
Expired / Lapsed
US
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Carrier for olefin polymerization catalyst
Assignee: Eneos Corp
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Filing: 1983-02-02
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Granted: 1984-05-22
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Expires: 2003-02-02
Abstract
Abstract Provided is a carrier for an olefin polymerization catalyst which carrier comprises a substance obtained by adding a liquid organic compound not dissolving a magnesium halide into a liquid medium having dissolved therein a substance which contains the magnesium halide as at least one component, the liquid medium further containing an oxide of Group II-IV metal or metals in the Periodic Table, followed by cooling to a temperature not higher than 0° C. and subsequent heat treatment at a temperature in the range of 40° to 200° C.
Inventors
- 👤 Kazuo Matsuura
- 👤 Nobuyuki Kuroda
- 👤 Takeichi Shiraishi
- 👤 Yutaka Shikatani
- 👤 Mituji Miyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:31
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
A carrier for an olefin polymerization catalyst, said carrier comprising a substance obtained by adding a liquid organic compound not dissolving a magnesium halide into a liquid medium having dissolved therein a substance which contains the magnesium halide as at least one component, said liquid medium further containing an oxide of Group II-IV metal or metals in the Periodic Table, followed by cooling to a temperature not higher than 0° C. and subsequent heat treatment at a temperature in the range of 40° to 200° C.
Claim 2
Dependent Claim
86 words
A carrier for an olefin polymerization catalyst, said carrier comprising a substance obtained by adding a liquid organic compound not dissolving a magnesium halide into a liquid medium having dissolved therein a substance which contains the magnesium halide as at least one component, said liquid medium further containing an oxide of Group II-IV metal or metals in the Periodic Table, followed by cooling to a temperature not higher than 0° C. and subsequent heat treatment at a temperature in the range of 40° to 200° C.
Claim 3
Dependent Claim
31 words
The carrier of claim 1, wherein said liquid medium is a liquid organic medium comprising at least one member selected from the group consisting of alcohols, esters, ethers, ketones and amines.
Claim 4
Dependent Claim
60 words
The carrier of claim 1, wherein said metal oxide comprises at least one member selected from the group consisting of MgO, CaO, ZnO, BaO, SiO 2 , SnO 2 , Al 2 O 3 , MgO.Al 2 O 3 , SiO 2 .Al 2 O 3 , MgO.SiO 2 , MgO.CaO.Al 2 O 3 and Al 2 O 3 .CaO.
Claim 5
Dependent Claim
38 words
The carrier of claim 1, wherein said metal oxide is present in said liquid medium in a ratio of 0.1 to 500 g. per 10 g. of said substance containing the magnesium halide as at least one component.
Claim 6
Dependent Claim
19 words
The carrier of claim 1, wherein said liquid organic compound is a saturated hydrocarbon or a halogenated derivative thereof.
Claim 7
Dependent Claim
40 words
The carrier of claim 1, wherein the amount of said liquid organic compound added is not less than 50 g. based on one liter of the solution containing the substance which contains the magnesium halide as at least one component.
Claim 8
Dependent Claim
26 words
An olefin polymerization catalyst comprising the combination of a titanium compound and/or a vanadium compound supported on the carrier of claim 1 and an organometallic compound.
Claim 9
Dependent Claim
92 words
A process for preparing a carrier for an olefin polymerization catalyst, which process comprises adding a liquid organic compound not dissolving a magnesium halide into a liquid medium having dissolved therein a substance which contains the magnesium halide as at least one component, said liquid medium further containing an oxide of Group II-IV metals in the Periodic Table, then cooling the resulting liquid mixture to a temperature not higher than 0° C. and thereafter subjecting the cooled mixture to heat treatment at a temperature in the range of 40° to 200° C.
Claim 10
Dependent Claim
92 words
A process for preparing a carrier for an olefin polymerization catalyst, which process comprises adding a liquid organic compound not dissolving a magnesium halide into a liquid medium having dissolved therein a substance which contains the magnesium halide as at least one component, said liquid medium further containing an oxide of Group II-IV metals in the Periodic Table, then cooling the resulting liquid mixture to a temperature not higher than 0° C. and thereafter subjecting the cooled mixture to heat treatment at a temperature in the range of 40° to 200° C.
References Cited (Backward Citations)
US3953414A
Cited
US3991260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |