US3725364A
Expired / Lapsed
US
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Process for preparing elastomers of ethylene and c{11 -c{11 {11 {11 alpha olefins
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1971-09-10
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Granted: 1973-04-03
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Expires: 1991-09-10
Abstract
Abstract A process for polymerizing ethylene and higher alpha olefins in the presence of a catalyst comprising an alkyl aluminum and the reaction product of a vanadium oxyhalide and an alkyl titanate. The resulting elastomeric polymers have exceptional tensile strength and green strength.
Inventors
- 👤 J Wagensommer
- 👤 R Lauria
- 👤 J Staib
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:44
CPC Classifications
C; C08; C08F; C08F210/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
12 words
The process of claim 1 wherein said titanium compound is tetrabutyl titAnate.
Claim 2
Dependent Claim
14 words
The process of claim 1 wherein said aluminum alkyl compound is diethyl aluminum chloride.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein said vanadium oxyhalide is VOCl3.
Claim 4
Dependent Claim
14 words
The process of claim 1 wherein said C3 to C10 alpha olefin is propylene.
Claim 5
Dependent Claim
15 words
The process of claim 1 wherein the mixture being polymerized additionally contains a nonconjugated diene.
Claim 6
Dependent Claim
11 words
The process of claim 6 wherein the nonconjugated diene is 5-ethylidene-2-norbornene.
References Cited (Backward Citations)
US3567653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |