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Patent US3907923A successfully refreshed from Google Patents.
US3907923A
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Oligomerization process
Assignee: Atlantic Richfield Co
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Filing: 1972-12-11
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Granted: 1975-09-23
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Expires: 1992-12-11
Abstract
Abstract Novel heterogeneous, nickel-containing catalysts comprising A. A nickel carbonyl complex, and B. An acidic, solid, silica-based material are active in numerous reactive environments such as oligomerization, including homo- and co-dimerization, and polymerization of various olefins. In specific aspects, bis(triphenylphosphine) nickel dicarbonyl supported on an acidic, calcined, silicaalumina support containing a separate alumina phase, is active in, for instance, the oligomerization, particularly dimerization, of ethylene and propylene, the codimerization of a conjugated diene and an alpha-olefin and the polymerization of conjugated dienes.
Inventors
- 👤 Jin Sun Yoo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:32
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/1616; B01J21/00; B01J21/12; B01J31/18; B01J31/20; B01J31/24; B01J31/2404; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/36; C08; C08F; C08F36/00; C08F36/02; C08F36/04; B01J21/06; B01J21/08; B01J2231/00; B01J2231/10; B01J2231/12; B01J2231/20; B01J2231/30; B01J2231/32; B01J2231/323; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/847; B01J37/00; B01J37/02; B01J37/03; C07C2521/00; C07C2521/06; C07C2521/08; C07C2521/12; C07C2531/00; C07C2531/16; C07C2531/22; C07C2531/24; C08F210/00; C08F210/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
57 words
IN A PROCESS FOR THE OILGOMERIZATION OF ONE OR MORRE ALPHAMONO OLEFINS SELECTED FROM THE GROUP CONSISTING OF ETHLENE AND PROPYLENE TO FORM A MAJOR PORTION OF A DIAMER PRODUCT, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID OILOMERIZATION IN CONDUCT WITH A HETEROGENEOUS CATALYST COMPRISING: A. A MINOR, CATALYTICALLY EFFECTVE AMOUNT OF A NICKEL COMPLEX OF THE FORMULA
Claim 2
Dependent Claim
57 words
IN A PROCESS FOR THE OILGOMERIZATION OF ONE OR MORRE ALPHAMONO OLEFINS SELECTED FROM THE GROUP CONSISTING OF ETHLENE AND PROPYLENE TO FORM A MAJOR PORTION OF A DIAMER PRODUCT, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID OILOMERIZATION IN CONDUCT WITH A HETEROGENEOUS CATALYST COMPRISING: A. A MINOR, CATALYTICALLY EFFECTVE AMOUNT OF A NICKEL COMPLEX OF THE FORMULA
Claim 3
Dependent Claim
19 words
A process of claim 1 wherein the weight ratio of (b) to (a) is from about 2 to 2000:1.
Claim 4
Dependent Claim
17 words
A process of claim 1 wherein the nickel complex is a bis(tertiary, hydrocarbyl-substituted monophosphine) nickel dicarbonyl complex.
Claim 5
Dependent Claim
23 words
A process of claim 3 wherein each hydrocarbyl substituent of the monophosphine is a hydrocarbyl group of up to about 20 carbon atoms.
Claim 6
Dependent Claim
11 words
A process of claim 4 wherein each hydrocarbyl group is phenyl.
Claim 7
Dependent Claim
19 words
A process of claim 5 wherein the weight ratio of (b) to (a) is from about 5 to 200:1.
Claim 8
Dependent Claim
19 words
A process of claim 1 wherein the silica-based support material is calcined and has A separate, additional alumina phase.
Claim 9
Dependent Claim
32 words
A process of claim 6 wherein the silica-based support material is calcined, has a separate, additional alumina phase and has a surface area of about 150 to 400 square meters per gram.
Claim 10
Dependent Claim
45 words
A process of claim 1 wherein the support is comprised of about 45 to 95 weight percent amorphous silica-alumina and about 5 to 55 weight percent of a separate alumina phase, the total alumina content of said support being about 20 to 70 weight percent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |