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US4008358A
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Process for polymerizing olefin
Assignee: Mitsubishi Chemical Corp
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Filing: 1975-06-26
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Granted: 1977-02-15
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Expires: 1995-06-26
Abstract
Abstract A process for polymerizing an olefin comprises effecting said polymerization in contact with a catalyst of a combination of a first solid component prepared by treating a mixture of (a) a titanium tetrahalide, (b) a vanadyl alcoholate and (c) a vanadyl trihalide, with an organoaluminum compound, and a second component of an organoaluminum compound.
Inventors
- 👤 Toshizo Abe
- 👤 Seiho Sakamoto
- 👤 Yasuhiro Nishihara
- 👤 Hidetoshi Saruwatari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:24
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
53 words
A process for polymerizing an olefin which comprises effecting said polymerization in contact with a catalyst which is a combination of (1) a solid component prepared by treating a mixture of (a) a titanium tetrahalide, (b) a vanadyl alcoholate and (c) a vanadyl trihalide, with an organoaluminum compound; and (2) an organoaluminum compound.
Claim 2
Dependent Claim
53 words
A process for polymerizing an olefin which comprises effecting said polymerization in contact with a catalyst which is a combination of (1) a solid component prepared by treating a mixture of (a) a titanium tetrahalide, (b) a vanadyl alcoholate and (c) a vanadyl trihalide, with an organoaluminum compound; and (2) an organoaluminum compound.
Claim 3
Dependent Claim
29 words
The process of claim 1, wherein the molar ratio of the titanium tetrahalide to the vanadyl alcoholate and the vanadyl trihalide is in the range of 0.05 - 10.
Claim 4
Dependent Claim
21 words
The process of claim 1, wherein the molar ratio of the vanadyl trihalide to the vanadyl alcoholate is less than 5.
Claim 5
Dependent Claim
32 words
The process of claim 1, wherein the organoaluminum compound is present in said solid component (1) in an amount greater than an equimolar amount relative to the total titanium and vanadium compounds.
Claim 6
Dependent Claim
30 words
The process of claim 1, wherein the components of said catalyst are mixed under an inert gas atmosphere in an inert medium at a temperature of 0° - 150° C.
Claim 7
Dependent Claim
14 words
The process of claim 5, wherein the inert medium is an inert hydrocarbon diluent.
Claim 8
Dependent Claim
30 words
The process of claim 1, wherein the organoaluminum used for preparing the solid component (1) is selected from the group consisting of trialkylaluminum, dialkylaluminum monohalide, alkylaluminum sesquihalide and alkylaluminum dihalide.
Claim 9
Dependent Claim
36 words
The process of claim 1 wherein the amounts of the solid component (1) and the organoaluminum compound (2) are chosen so that the Al atom to total titanium and vanadium atom ratio is 0.1 to 500.
Claim 10
Dependent Claim
42 words
A catalyst for polymerizing an olefin which comprises a combination of (1) a solid component prepared by treating a mixture of (a) a titanium tetrahalide, (b) a vanadyl alcoholate and (c) a vanadyl trihalide, with an organoaluminum compound; and an organoaluminum compound.
Claim 11
Dependent Claim
42 words
A catalyst for polymerizing an olefin which comprises a combination of (1) a solid component prepared by treating a mixture of (a) a titanium tetrahalide, (b) a vanadyl alcoholate and (c) a vanadyl trihalide, with an organoaluminum compound; and an organoaluminum compound.
Claim 12
Dependent Claim
29 words
The catalyst of claim 9, wherein the molar ratio of the titanium tetrahalide to the vanadyl alcoholate and the vanadyl trihalide is in the range of 0.05 - 10.
Claim 13
Dependent Claim
21 words
The catalyst of claim 9, wherein the molar ratio of the vanadyl trihalide to the vanadyl alcoholate is less than 5.
Claim 14
Dependent Claim
32 words
The catalyst of claim 9, wherein said organoaluminum compound is present in said solid component (1) in an amount greater than an equimolar amount relative to the total titanium and vanadium compounds.
Claim 15
Dependent Claim
118 words
A process for polymerizing an olefin which comprises effecting said polymerization in contact with a catalyst of a combination of (1) a solid component prepared by treating a mixture of (a) titanium tetrachloride, (b) n-butoxy vanadyl and (c) vanadyl trichloride, with ethyl-aluminum sesquichloride; and (2) triethylaluminum, wherein the molar ratio of (a) to (b) + (c) is 0.50-10 and the molar ratio of (c) to (b) is less than 5 and wherein the components (a), (b) and (c) are mixed in benzene and then the ethyl-aluminum sesquichloride component is added and the mixture stirred and the resulting solid component is recovered; wherein all mixing operations are carried out in an argon atmosphere at a temperature of 0°-150° C.
Claim 16
Dependent Claim
118 words
A process for polymerizing an olefin which comprises effecting said polymerization in contact with a catalyst of a combination of (1) a solid component prepared by treating a mixture of (a) titanium tetrachloride, (b) n-butoxy vanadyl and (c) vanadyl trichloride, with ethyl-aluminum sesquichloride; and (2) triethylaluminum, wherein the molar ratio of (a) to (b) + (c) is 0.50-10 and the molar ratio of (c) to (b) is less than 5 and wherein the components (a), (b) and (c) are mixed in benzene and then the ethyl-aluminum sesquichloride component is added and the mixture stirred and the resulting solid component is recovered; wherein all mixing operations are carried out in an argon atmosphere at a temperature of 0°-150° C.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |