US3627700A
Expired / Lapsed
US
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Dimerization of olefins with chromium halide complex catalyst systems
Assignee: Phillips Petroleum Co
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Filing: 1968-11-22
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Granted: 1971-12-14
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Expires: 1988-11-22
Abstract
Abstract Olefins are dimerized by contacting the olefin with a homogeneous catalyst comprising a chromium halide complex in combination with an ethylaluminum dichloride adjuvant. Additionally, a heterogeneous catalyst is prepared by depositing upon a suitable support the homogeneous combination mentioned above and contacting the olefin to produce dimers thereof.
Inventors
- 👤 Ernest A Zuech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:32
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/32; B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/14; B01J31/143; B01J31/16; B01J31/18; B01J31/1805; B01J31/181; B01J2531/00; B01J2531/60; B01J2531/62; C07C2531/00; C07C2531/16; C07C2531/22; C07C2531/24
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
13 words
A catalyst according to claim 1 wherein the chromium halide complex is (L1)2(NO)2CrX2.
Claim 2
Dependent Claim
13 words
A catalyst according to claim 1 wherein the chromium halide complex is (L1)2CrX2.
Claim 3
Dependent Claim
12 words
A catalyst according to claim 1 wherein the chromium complex is (L2)3CrX3.
Claim 4
Dependent Claim
22 words
A catalyst according to claim 1 which is formed when the mixture of a and b is deposited upon a suitable support.
Claim 5
Dependent Claim
11 words
A composition according to claim 5 wherein the support is silica-alumina.
Claim 6
Dependent Claim
14 words
The composition according to claim 1 comprising a mixture of tris(pyridine)trichlorochromium and ethylaluminum dichloride.
Claim 7
Dependent Claim
14 words
The composition according to claim 1 comprising a mixture of tris(4-ethylpyridine)trichlorochromium and ethylaluminum dichloride.
Claim 8
Dependent Claim
15 words
The composition according to claim 1 comprising a mixture of bis(triphenylphosphine oxide)dinitrosyldichlorochromium and ethylaluminum dichloride.
Claim 9
Dependent Claim
14 words
The composition according to claim 1 comprising a mixture of bis(4-ethylpyridine)dinitrosyldichlorochromium and ethylaluminum dichloride.
Claim 10
Dependent Claim
14 words
The composition according to claim 1 comprising a mixture of bis(4-ethylpyridine)dichlorochromium and ethylaluminum dichloride.
References Cited (Backward Citations)
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Cited
US3413376A
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US3472910A
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US3482001A
Cited
US3427365A
Cited
US3485881A
Cited
US3467726A
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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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |