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US4065611A
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Process for the production of polyolefins
Assignee: Eneos Corp
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Filing: 1976-09-10
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Granted: 1977-12-27
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Expires: 1996-09-10
Abstract
Abstract Processes for the production of polyolefins are disclosed in which olefins are polymerized in the presence of Ziegler catalyst components carried on magnesium oxide. The polymerization is effected in the presence of a solid catalyst comprising a transition metal halide carried on magnesium oxide, such oxide having been pretreated with an organic halide, and another catalyst component selected from the group consisting of organoaluminum compounds and alkylzinc. The combination of these catalysts contributes to increased polymer yields based on both carrier and transition metal.
Inventors
- 👤 Mituji Miyoshi
- 👤 Kazuo Matsuura
- 👤 Nobuyuki Kuroda
- 👤 Shiro Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:02
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
148 words
A process for the production of polyolefins which comprises polymerizing at least one alpha-olefin having 2 to 6 carbon atoms in the presence of a composite catalyst consisting of: a. a solid catalyst component resulting from contacting magnesium oxide with an organic halide selected from the group consisting of tertiary butylchloride, tertiary butylbromide, and tertiary hexylchloride, in amounts not exceeding 10 millimols per gram of said magnesium oxide in the presence of solvents inert to Ziegler catalysts at 0° - 200° C, admixing said contacted magnesium oxide with a transition metal halide selected from the group consisting of titanium and vanadium halides in amounts of 0.1 to 50 times by weight of said magnesium oxide that are liquid at the following reaction temperature, and reacting said admixture at 50° - 200° C, and b. an organometal compound selected from the group consisting of organoaluminum compounds and alkylzinc compounds.
Claim 2
Dependent Claim
148 words
A process for the production of polyolefins which comprises polymerizing at least one alpha-olefin having 2 to 6 carbon atoms in the presence of a composite catalyst consisting of: a. a solid catalyst component resulting from contacting magnesium oxide with an organic halide selected from the group consisting of tertiary butylchloride, tertiary butylbromide, and tertiary hexylchloride, in amounts not exceeding 10 millimols per gram of said magnesium oxide in the presence of solvents inert to Ziegler catalysts at 0° - 200° C, admixing said contacted magnesium oxide with a transition metal halide selected from the group consisting of titanium and vanadium halides in amounts of 0.1 to 50 times by weight of said magnesium oxide that are liquid at the following reaction temperature, and reacting said admixture at 50° - 200° C, and b. an organometal compound selected from the group consisting of organoaluminum compounds and alkylzinc compounds.
Claim 3
Dependent Claim
34 words
A process as defined in claim 1 wherein said titanium and vanadium halides are selected from the group consisting of titanium tetrachloride, titanium tetrabromide, ethoxy trichlorotitanium, diethoxy dichlorotitanium, dibutoxy dichlorotitanium, vanadium tetrachloride and oxytrichlorovanadium.
Claim 4
Dependent Claim
22 words
A process as defined in claim 1 wherein said alphaolefin is selected from the group consisting of ethylene, propylene, butene-1 and 1-hexene.
Claim 5
Dependent Claim
35 words
A process as defined in claim 1 wherein said organic halide is used in amounts of 0.1 to 5 millimols per gram of said magnesium oxide in the presence of solvents inert to Ziegler catalysts.
Claim 6
Dependent Claim
25 words
A process as defined in claim 1 wherein said organometal compound is used in amount of 0.1 to 100 mol times said transition metal halide.
Claim 7
Dependent Claim
14 words
A process as defined in claim 1 wherein said organic halide is tertiary butylchloride.
Claim 8
Dependent Claim
15 words
A process as defined in claim 1 wherein the transition metal halide comprises titanium tetrachloride.
Claim 9
Dependent Claim
14 words
A process as defined in claim 1 wherein said organic halide is tertiary butylbromide.
Claim 10
Dependent Claim
14 words
A process as defined in claim 1 wherein said organic halide is tertiary hexylchloride.
Claim 11
Dependent Claim
158 words
A process for the production of polyolefins which comprises polymerizing at least one alpha-olefin having 2 to 6 carbon atoms in the presence of a composite catalyst consisting of: a. a solid catalyst component resulting from contacting magnesium oxide with an organic halide selected from the group consisting of tertiary butylchloride, tertiary butylbromide, and tertiary hexylchloride in amounts not exceeding 10 millimols per gram of said magnesium oxide in the presence of solvents inert to Ziegler catalyst at a temperature ranging from 0° C to the boiling point of said organic halide, admixing said contacted magnesium oxide with a transition metal halide selected from the group consisting of titanium and vanadium halides in amounts of 0.1 to 50 times by weight of said magnesium oxide that are liquid at the following reaction temperature, and reacting said admixture at 50° - 200° C, and b. an organometal compound selected from the group consisting of organoaluminum compounds and alkylzinc compounds.
Claim 12
Dependent Claim
158 words
A process for the production of polyolefins which comprises polymerizing at least one alpha-olefin having 2 to 6 carbon atoms in the presence of a composite catalyst consisting of: a. a solid catalyst component resulting from contacting magnesium oxide with an organic halide selected from the group consisting of tertiary butylchloride, tertiary butylbromide, and tertiary hexylchloride in amounts not exceeding 10 millimols per gram of said magnesium oxide in the presence of solvents inert to Ziegler catalyst at a temperature ranging from 0° C to the boiling point of said organic halide, admixing said contacted magnesium oxide with a transition metal halide selected from the group consisting of titanium and vanadium halides in amounts of 0.1 to 50 times by weight of said magnesium oxide that are liquid at the following reaction temperature, and reacting said admixture at 50° - 200° C, and b. an organometal compound selected from the group consisting of organoaluminum compounds and alkylzinc compounds.
Claim 13
Dependent Claim
14 words
A process as defined in claim 10 wherein said organic halide is tertiary butylchloride.
Claim 14
Dependent Claim
14 words
A process as defined in claim 10 wherein said organic halide is tertiary butylbromide.
Claim 15
Dependent Claim
14 words
A process as defined in claim 10 wherein said organic halide is tertiary hexylchloride.
References Cited (Backward Citations)
US3513150A
Cited
US3663660A
Cited
US3676415A
Cited
US3658722A
Cited
NL7113010A
Cited
US3888789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |