US4567154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed metal alkyl catalyst for olefin polymerization
Assignee: Chevron USA Inc
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Filing: 1983-06-27
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Granted: 1986-01-28
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Expires: 2003-06-27
Abstract
Abstract A catalyst composition for use in polymerizing alpha olefins which comprises a solid supported titanium complex and a cocatalyst comprising a mixture of an alkyl aluminum halide and a dialkyl magnesium or alkyl lithium compound.
Inventors
- 👤 Robert Bacskai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:53
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
33 words
A catalyst composition for use in polymerizing alpha olefins which comprises a solid supported titanium tetrahalide complex and a cocatalyst comprising a mixture of an alkyl aluminum halide and an alkyl lithium compound.
Claim 2
Dependent Claim
33 words
A catalyst composition for use in polymerizing alpha olefins which comprises a solid supported titanium tetrahalide complex and a cocatalyst comprising a mixture of an alkyl aluminum halide and an alkyl lithium compound.
Claim 3
Dependent Claim
22 words
The composition according to claim 1, wherein the cocatalyst comprises a mixture of a dialkyl aluminum chloride and an alkyl lithium compound.
Claim 4
Dependent Claim
19 words
The composition according to claim 2, wherein the cocatalyst comprises a mixture of diethyl aluminum chloride and butyl lithium.
Claim 5
Dependent Claim
18 words
The composition according to claim 1, wherein the molar ratio of aluminum to lithium is 1:5 to 5:1.
Claim 6
Dependent Claim
14 words
The composition according to claim 1, wherein the cocatalyst further comprises a Lewis base.
Claim 7
Dependent Claim
16 words
The composition according to claim 5, wherein the Lewis base is an aromatic carboxylic acid ester.
Claim 8
Dependent Claim
13 words
The composition according to claim 6, wherein the Lewis base is ethyl benzoate.
Claim 9
Dependent Claim
28 words
The composition according to claim 1, wherein the supported titanium complex comprises a titanium tetrahalide, a magnesium dihalide, an aromatic carboxylic acid ester and an alcohol or phenol.
Claim 10
Dependent Claim
39 words
The composition according to claim 1, wherein the supported titanium complex comprises a titanium tetrahalide, magnesium dihalide, an aromatic carboxylic acid ester and an inert solid organic compound selected from the group consisting of durene, anthracene, acenaphthene and diphenyl.
Claim 11
Dependent Claim
26 words
The composition according to claim 1, wherein the supported titanium complex comprises a titanium tetrahalide, a magnesium dihalide, an aromatic carboxylic acid ester and silicon tetrachloride.
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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) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |