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US4226964A
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Process for polymerizing olefin
Assignee: Mitsubishi Chemical Corp
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Filing: 1979-01-25
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Granted: 1980-10-07
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Expires: 1999-01-25
Abstract
Abstract In a process for polymerizing an olefin in the presence of a catalyst system combining an organoaluminum compound with a hydrocarbon insoluble solid catalytic component prepared by treating a hydrocarbon solution containing a magnesium compound, a titanium compound and a zirconium compound with an aluminum halide having the formula AlR1X21 (R1 represents an alkyl, aryl or cycloalkyl group and X1 represents a halogen atom), an improvement characterized in that the magnesium compound is a compound having the formula Mg(OR2)lX2-l2 (R2 represents an alkyl, aryl or cycloalkyl group; X2 represents a halogen atom; and l is 1 or 2) and the titanium compound is a compound having the formula Ti(OR3)nX4-n3 (R3 represents an alkyl, aryl or cycloalkyl group; X3 represents a halogen atom; n is 1, 2 or 3) and the zirconium compound is a compound having the formula Zr(OR4)mX4-m4 (R4 represents an alkyl, aryl or cycloalkyl group; X4 represents a halogen atom; m is 1, 2 or 3) or an alcohol solution of a compound having the formula ZrX44 (X4 is defined above).
Inventors
- 👤 Toru Tanaka
- 👤 Shigeaki Okano
- 👤 Eiji Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:26
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
170 words
In a process for polymerizing an olefin in the presence of a catalyst system combining an organoaluminum compound with a hydrocarbon insoluble solid catalytic component prepared by treating a hydrocarbon solution containing a magnesium compound, a titanium compound and a zirconium compound with an aluminum halide having the formula AlR 1 X 2 1 , wherein R 1 represents an alkyl, aryl or cycloalkyl group and X 1 represents a halogen atom, the improvement wherein the magnesium compound is a compound having the formula Mg(OR.sup.2).sub.2 wherein R 2 represents an alkyl, aryl or cycloalkyl group; and the titanium compound is a compound having the formula Ti(OR.sup.3).sub.3 X.sup.3 wherein R 3 represents an alkyl, aryl or cycloalkyl group; and the zirconium compound is a compound having the formula Zr(OR.sup.4).sub.m X.sub.4-m.sup.4 wherein R 4 represents an alkyl, aryl or cycloalkyl group; X 4 represents a halogen atom; m is 1, 2 or 3 or an alcohol solution of a compound having the formula ZrX.sub.4.sup.4 X 3 =X 4 =Cl; and wherein ##EQU3##
Claim 2
Dependent Claim
170 words
In a process for polymerizing an olefin in the presence of a catalyst system combining an organoaluminum compound with a hydrocarbon insoluble solid catalytic component prepared by treating a hydrocarbon solution containing a magnesium compound, a titanium compound and a zirconium compound with an aluminum halide having the formula AlR 1 X 2 1 , wherein R 1 represents an alkyl, aryl or cycloalkyl group and X 1 represents a halogen atom, the improvement wherein the magnesium compound is a compound having the formula Mg(OR.sup.2).sub.2 wherein R 2 represents an alkyl, aryl or cycloalkyl group; and the titanium compound is a compound having the formula Ti(OR.sup.3).sub.3 X.sup.3 wherein R 3 represents an alkyl, aryl or cycloalkyl group; and the zirconium compound is a compound having the formula Zr(OR.sup.4).sub.m X.sub.4-m.sup.4 wherein R 4 represents an alkyl, aryl or cycloalkyl group; X 4 represents a halogen atom; m is 1, 2 or 3 or an alcohol solution of a compound having the formula ZrX.sub.4.sup.4 X 3 =X 4 =Cl; and wherein ##EQU3##
Claim 3
Dependent Claim
22 words
A process for polymerizing an olefin according to claim 1, wherein the zirconium compound is a compound having the formula Zr(OR.sup.4).sub.3 X.sup.4.
Claim 4
Dependent Claim
25 words
A process for polymerizing an olefin according to claim 1, wherein the zirconium compound is an alcohol solution of a compound having the formula ZrX.sub.4.sup.4
Claim 5
Dependent Claim
17 words
A process for polymerizing an olefin according to claim 2, wherein the zirconium compound is tri-n-butoxyzirconium monochloride.
Claim 6
Dependent Claim
21 words
A process for polymerizing an olefin according to claim 3, wherein the zirconium compound is a n-butanol solution of zirconium tetrachloride.
Claim 7
Dependent Claim
23 words
A process for polymerizing an olefin according to claim 1, wherein the magnesium compound is diethoxymagnesium and the titanium compound is tri-n-butoxytitanium monochloride.
Claim 8
Dependent Claim
17 words
A process for polymerizing an olefin according to claim 1, wherein the aluminum halide is ethylaluminum dichloride.
Claim 9
Dependent Claim
48 words
A process for polymerizing an olefin according to claim 1, wherein the magnesium compound, the titanium compound and the zirconium compound are mixed with an alcohol to form a homogeneous solution and then, the alcohol is removed and a hydrocarbon solvent is added to prepare a hydrocarbon solution.
Claim 10
Dependent Claim
15 words
A process for polymerizing an olefin according to claim 8, wherein the alcohol is n-butanol.
Claim 11
Dependent Claim
37 words
A process for polymerizing an olefin according to claim 8, wherein the magnesium compound, the titanium compound and the zirconium compound are mixed with an alcohol at 100° C. to 160° C. to form a homogeneous solution.
Claim 12
Dependent Claim
23 words
A process for polymerizing an olefin according to claim 1, wherein the hydrocarbon solvent for the hydrocarbon solution is benzene, toluene or xylene.
Claim 13
Dependent Claim
26 words
A process for polymerizing an olefin according to claim 1, wherein the temperature for treating with the aluminum halide is at 60° C. to 100° C.
Claim 14
Dependent Claim
43 words
A process for polymerizing an olefin according to claim 1, wherein the organoaluminum compound is a compound having the formula AlR.sub.k.sup.5 X.sub.3-k.sup.5 wherein R 5 represents an alkyl, aryl or cycloalkyl group; X 5 represents a halogen atom; k is 1 to 3.
Claim 15
Dependent Claim
15 words
A process for polymerizing an olefin according to claim 15, wherein the organoaluminum is triisobutylaluminum.
Claim 16
Dependent Claim
24 words
A process for polymerizing an olefin according to claim 1, wherein the polymerization temperature is in a range of 70° C. to 90° C.
Claim 17
Dependent Claim
33 words
A process for polymerizing an olefin according to claim 1, wherein the amount of the magnesium compound and the titanium compound in gram equivalent ratio is in a range of 0.3 to 0.7.
Claim 18
Dependent Claim
61 words
A process for polymerizing an olefin according to claim 1, wherein the magnesium compound, the titanium compound, the zirconium compound and the aluminum halide are respectively Mg(OR 2 ) 2 , Ti(OR 3 ) 3 Cl, Zr(OR 4 ) 3 Cl and AlR 1 Cl 2 and the treatment with the aluminum halide is performed at 70° C. to 100° C.
References Cited (Backward Citations)
US4109071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |