US3620981A
Expired / Lapsed
US
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Heterogeneous catalyst compositions
Assignee: Shell USA Inc
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Filing: 1967-12-11
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Granted: 1971-11-16
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Expires: 1987-12-11
Abstract
Abstract Catalyst compositions comprising certain hydrocarbon-transition metal halide complexes supported on an acidic, inorganic oxide support are useful in the oligomerization or polymerization of olefins.
Inventors
- 👤 Eugene F Magoon
- 👤 Lawrence G Cannell
- 👤 John H Raley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:21
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/1616; B01J31/02; B01J31/12; B01J31/14; B01J31/143; B01J31/22; B01J31/2282; B01J31/2291; B01J31/2295; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/32; C07C2/34; B01J21/00; B01J21/12; B01J2231/00; B01J2231/10; B01J2231/20; B01J2531/00; B01J2531/60; B01J2531/62; B01J2531/80; B01J2531/84; B01J2531/847; C07C2531/00; C07C2531/16; C07C2531/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
17 words
The catalyst composition of claim 1 wherein the pi -allyl transition metal halide is pi -allylnickel chloride.
Claim 2
Dependent Claim
18 words
The catalyst composition of claim 1 wherein the pi -allyl transition metal halide is bis( pi -allyl)chromium chloride.
Claim 3
Dependent Claim
13 words
The catalyst composition of claim 1 wherein the alkyl aluminum compound is triethylaluminum.
Claim 4
Dependent Claim
14 words
The catalyst composition of claim 1 wherein the alkyl aluminum compound is ethylaluminum dichloride.
References Cited (Backward Citations)
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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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |