Patent US4209601A successfully refreshed from Google Patents.
US4209601A
Expired / Lapsed
US
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Process for the production of polyolefins
Assignee: Eneos Corp
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Filing: 1978-03-16
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Granted: 1980-06-24
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Expires: 1998-03-16
Abstract
Abstract The present invention discloses improved catalysts for polymerizing or copolymerizing olefins and a process for the production of polyolefins comprising a polymerization or copolymerization of olefins by the use of said catalysts. According to the invention there is provided a process for the production of polyolefins by polymerizing or copolymerizing olefins using as the catalyst a solid component containing a titanium compound and/or a vanadium compound and an organometallic compound, said solid component comprising a substance obtained by co-pulverizing (1) a metal halide selected from the group consisting of magnesium halides and manganese halides, (2) a compound represented by the general formula B(OR) n X 3-n X3 in which n is a number of the range 0<n≦3, X represents a halogen atom and R is a hydrocarbon radical containing from 1 to 20 carbon atoms and may be alike or different and (3) a titanium compound and/or a vanadium compound.
Inventors
- 👤 Nobuyuki Kuroda
- 👤 Takeichi Shiraishi
- 👤 Akio Itoh
- 👤 Kazuo Matsuura
- 👤 Mituji Miyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:10
CPC Classifications
C; C08; C08F; C08F10/00; C08F4/00; C08F4/02; C08F4/022; Y; Y10; Y10S; Y10S526/00; Y10S526/906
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
258 words
Process for the polymerization of ethylene in the presence of solvent to provide solid particles of polyethylene present in said solvent, said polymerization being carried out in the presence of a catalyst consisting essentially of a solid component containing a titanium compound and/or a vanadium compound and an organometallic compound selected from the group consisting of organoaluminum compounds and organozinc compounds, said solid component being obtained by copulverizing (1) a metal halide selected from the group consisting of magnesium chloride, magnesium bromide, magnesium iodide and manganese chloride, (2) an organoboron compound selected from the group consisting of B(OCH 3 ) 3 , B(OC 2 H 5 ) 3 , B(On--C 3 H 7 ) 3 , B(Oi--C 3 H 7 ) 3 , B(On--C 4 H 9 ) 3 , B(Ot--C 4 H 9 ) 3 , B(OC 6 H 5 ) 3 , B(OCH 3 ) 2 Cl, B(OC 2 H 5 ) 2 Cl, B(Oi--C 3 H 7 ) 2 Cl and B(Ot--C 4 H 9 ) 2 Cl, the ratio of the metal halide to the organoboron compound being in the range from 1:0.5 to 1:0.1, and (3) a titanium compound and/or a vanadium compound, the copulverization of the metal halide, organoboron compound and titanium compound and/or vanadium compound being carried out at a temperature between 0° C. and 200°C. for a period from 0.5 to 50 hours in an inert gas atmosphere, and the titanium and/or vanadium content in the resulting solid being in the range of from 0.5 to 20 percent by weight.
Claim 2
Dependent Claim
258 words
Process for the polymerization of ethylene in the presence of solvent to provide solid particles of polyethylene present in said solvent, said polymerization being carried out in the presence of a catalyst consisting essentially of a solid component containing a titanium compound and/or a vanadium compound and an organometallic compound selected from the group consisting of organoaluminum compounds and organozinc compounds, said solid component being obtained by copulverizing (1) a metal halide selected from the group consisting of magnesium chloride, magnesium bromide, magnesium iodide and manganese chloride, (2) an organoboron compound selected from the group consisting of B(OCH 3 ) 3 , B(OC 2 H 5 ) 3 , B(On--C 3 H 7 ) 3 , B(Oi--C 3 H 7 ) 3 , B(On--C 4 H 9 ) 3 , B(Ot--C 4 H 9 ) 3 , B(OC 6 H 5 ) 3 , B(OCH 3 ) 2 Cl, B(OC 2 H 5 ) 2 Cl, B(Oi--C 3 H 7 ) 2 Cl and B(Ot--C 4 H 9 ) 2 Cl, the ratio of the metal halide to the organoboron compound being in the range from 1:0.5 to 1:0.1, and (3) a titanium compound and/or a vanadium compound, the copulverization of the metal halide, organoboron compound and titanium compound and/or vanadium compound being carried out at a temperature between 0° C. and 200°C. for a period from 0.5 to 50 hours in an inert gas atmosphere, and the titanium and/or vanadium content in the resulting solid being in the range of from 0.5 to 20 percent by weight.
Claim 3
Dependent Claim
29 words
Process according to claim 1 wherein the organometallic compound is used in a proportion from 1.0 to 1,000 moles per mole of the titianium compound and/or the vanadium compound.
Claim 4
Dependent Claim
16 words
Process according to claim 1 wherein the polymerization is carried out in the presence of hydrogen.
References Cited (Backward Citations)
US3502634A
Cited
GB1275641A
Cited
GB1314258A
Cited
GB1335887A
Cited
DE2342200A1
Cited
DE2365235A1
Cited
US3991260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-06-24 | 1983-12-24 | 1984-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-24 | 1987-12-24 | 1988-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-24 | 1991-12-24 | 1992-06-24 | $7700.00 | Window Closed / Lapsed |