US4562168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst and olefin polymerization
Assignee: Phillips Petroleum Co
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Filing: 1984-05-17
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Granted: 1985-12-31
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Expires: 2004-05-17
Abstract
Abstract A polymerization catalyst providing a good balance of productivity and polymer fines prepared by reacting a metal halide, such as MgCl 2 , with a titanium compound, such as Ti(OEt) 4 , to form a first catalyst component; mixing a solution of said first catalyst component with an organoaluminum compound at a temperature in the range of -100° to 70° C.; then heating to a higher temperature in the range of 50° C. to 110° C. to form additional precipitate, and then reacting the resulting solid with a halogenating agent.
Inventors
- 👤 Clifford C. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:27
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/02
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
164 words
A process for making a catalyst comprising (1) reacting a metal halide selected from the group consisting of magnesium dihalides and magnesium hydroxyhalides and a transition metal compound wherein the transition metal is titanium bonded to at least one radical selected from the group consisting of hydrocarbyl oxides, imides, amides, and mercaptides to form a first catalyst component, (2) mixing a solution of said first catalyst component with a second catalyst component comprising an organoaluminum compound at a temperature in the range of about -100° C. to about 70° C. to form a precipitate, (3) subjecting precipitate from step (2) in the presence of at least a portion of the supernatant liquid remaining after step (2) to a temperature higher than that used in step (2) and of at least 50° C. for a length of time sufficient to result in the formation of some additional amount of precipitate, and (4) reacting solid precipitate resulting from step (3) with a halogen ion exchanging agent.
Claim 2
Dependent Claim
164 words
A process for making a catalyst comprising (1) reacting a metal halide selected from the group consisting of magnesium dihalides and magnesium hydroxyhalides and a transition metal compound wherein the transition metal is titanium bonded to at least one radical selected from the group consisting of hydrocarbyl oxides, imides, amides, and mercaptides to form a first catalyst component, (2) mixing a solution of said first catalyst component with a second catalyst component comprising an organoaluminum compound at a temperature in the range of about -100° C. to about 70° C. to form a precipitate, (3) subjecting precipitate from step (2) in the presence of at least a portion of the supernatant liquid remaining after step (2) to a temperature higher than that used in step (2) and of at least 50° C. for a length of time sufficient to result in the formation of some additional amount of precipitate, and (4) reacting solid precipitate resulting from step (3) with a halogen ion exchanging agent.
Claim 3
Dependent Claim
25 words
A process according to claim 1 wherein step (3) is conducted at a temperature in the range of about 50° C. to about 110° C.
Claim 4
Dependent Claim
13 words
A process according to claim 2 wherein said metal halide comprises magnesium dichloride.
Claim 5
Dependent Claim
39 words
A process according to claim 3 wherein said transition metal compound comprises a titanium compound of the formula Ti(OR).sub.4 wherein each R, which may be the same or different, is an alkyl radical containing 1 to 10 carbon atoms.
Claim 6
Dependent Claim
52 words
A process according to claim 4 wherein said second catalyst component is a hydrocarbylaluminum halide selected from those having formulas: R'AlX.sub.2, R'.sub.2 AlX, and R'.sub.3 Al.sub.2 X.sub.3 wherein each R' is individually selected from linear or branched chain hydrocarbyl radicals containing 1 to 20 carbon atoms and X is a halogen atom.
Claim 7
Dependent Claim
16 words
A process according to claim 5 wherein said halogen ion exchanging agent comprises TiCl 4 .
Claim 8
Dependent Claim
14 words
A process according to claim 6 wherein said second catalyst component comprises ethylaluminum sesquichloride.
Claim 9
Dependent Claim
25 words
A process according to claim 7 wherein step (3) is conducted at a temperature in the range of about 90° C. to about 110° C.
Claim 10
Dependent Claim
16 words
A process according to claim 8 wherein said transition metal compound consists essentially of titanium tetraethoxide.
Claim 11
Dependent Claim
9 words
A catalyst produced by the process of claim 9.
Claim 12
Dependent Claim
9 words
A catalyst produced by the process of claim 1.
Claim 13
Dependent Claim
22 words
A process according to claim 9 wherein at least a portion of the supernatant liquid is removed before step (3) is completed.
Claim 14
Dependent Claim
24 words
A process according to claim 9 wherein 1/4 to 5/6 of the volume of the supernatant liquid is removed before step (3) is conducted.
Claim 15
Dependent Claim
24 words
A process according to claim 9 wherein 1/4 to 3/4 of the volume of the supernatant liquid is removed before step (3) is conducted.
Claim 16
Dependent Claim
9 words
A catalyst produced by the process of claim 13.
Claim 17
Dependent Claim
22 words
A process according to claim 1 wherein at least a portion of the supernatant liquid is removed before step (3) is completed.
Claim 18
Dependent Claim
24 words
A process according to claim 16 wherein 1/4 to 5/6 of the volume of the supernatant liquid is removed before step (3) is conducted.
Claim 19
Dependent Claim
24 words
A process according to claim 16 wherein 1/2 to 3/4 of the volume of the supernatant liquid is removed before step (3) is conducted.
Claim 20
Dependent Claim
9 words
A catalyst produced by the process of claim 17.
Claim 21
Dependent Claim
25 words
A process according to claim 1 wherein step (2) is conducted at a temperature in the range of about -100° C. to about 50° C.
Claim 22
Dependent Claim
18 words
A process according to claim 7 wherein step (2) is conducted at a temperature of about 30° C.
Claim 23
Dependent Claim
18 words
A process according to claim 9 wherein step (2) is conducted at a temperature of about 30° 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) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |