US2552508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic polymerization of alpha olefins
Assignee: Standard Oil Co
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Filing: 1948-12-15
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Granted: 1951-05-15
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Expires: 1968-12-15
Abstract
No abstract record available.
Inventors
- 👤 Edwin F Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:33
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/20; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1213
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS FOR THE POLYMERIZATION OF AN ALPHAOLEFIN TO PRODUCE PRINCIPALLY DIMERS AND TRIMERS, WHICH PROCESS COMPRISES CONTACTING SAID OLEFIN IN THE LIQUID PHASE WITH A CATALYST CONSISTING ESSENTIALLY OF BF3 IN AN AMOUNT BETWEEN ABOUT 0.05 AND ABOUT 30 PERCENT BY WEIGHT AND WITH OXYGEN IN AN AMOUNT BETWEEN ABOUT 5 AND ABOUT 40 PERCENT BY WEIGHT, BASED ON SAID OLEFIN, AT A TEMPERATURE BETWEEN ABOUT 70* F. AND ABOUT 250* F. FOR A PERIOD OF TIME SUFFICIENT TO EFFECT SUBSTANTIAL POLYMERIZATION OF SAID OLEFIN.
Claim 2
Dependent Claim
86 words
A PROCESS FOR THE POLYMERIZATION OF AN ALPHAOLEFIN TO PRODUCE PRINCIPALLY DIMERS AND TRIMERS, WHICH PROCESS COMPRISES CONTACTING SAID OLEFIN IN THE LIQUID PHASE WITH A CATALYST CONSISTING ESSENTIALLY OF BF3 IN AN AMOUNT BETWEEN ABOUT 0.05 AND ABOUT 30 PERCENT BY WEIGHT AND WITH OXYGEN IN AN AMOUNT BETWEEN ABOUT 5 AND ABOUT 40 PERCENT BY WEIGHT, BASED ON SAID OLEFIN, AT A TEMPERATURE BETWEEN ABOUT 70* F. AND ABOUT 250* F. FOR A PERIOD OF TIME SUFFICIENT TO EFFECT SUBSTANTIAL POLYMERIZATION OF SAID OLEFIN.
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) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |