US2830106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process
Assignee: Shell Development Co
•
Filing: 1956-04-09
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Granted: 1958-04-08
•
Expires: 1976-04-09
Abstract
No abstract record available.
Inventors
- 👤 George M Good
- 👤 Albert P Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:29
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/20; C07C2521/00; C07C2521/02; C07C2521/04; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR COVERTING AN ALPHA OLEFIN HAVING AT LEAST SIX CARBON ATOMS IN A CHAIN INTO A DIMER WHICH COMPRISES CONTACTING SAID OLEFIN IN LIQUID PHASE AT A TEMPERATURE BELOW 90*C. WITH A SOLID CATALYST CONSISTING OF ACTIVATED ALUMINA CONTAINING ABOUT 0.5% TO 3% BY WEIGHT HYDROGEN FLUORIDE, BASED ON ALUMINA, AND RECOVERING FROM THE PRODUCT A MONOMER FRACTION CONTAINING PREDOMINATLY UNCONVERTED ALPHA ALEFIN AND DIMER FRACTION.
Claim 2
Dependent Claim
68 words
A PROCESS FOR COVERTING AN ALPHA OLEFIN HAVING AT LEAST SIX CARBON ATOMS IN A CHAIN INTO A DIMER WHICH COMPRISES CONTACTING SAID OLEFIN IN LIQUID PHASE AT A TEMPERATURE BELOW 90*C. WITH A SOLID CATALYST CONSISTING OF ACTIVATED ALUMINA CONTAINING ABOUT 0.5% TO 3% BY WEIGHT HYDROGEN FLUORIDE, BASED ON ALUMINA, AND RECOVERING FROM THE PRODUCT A MONOMER FRACTION CONTAINING PREDOMINATLY UNCONVERTED ALPHA ALEFIN AND DIMER FRACTION.
References Cited (Backward Citations)
US2068016A
Cited
US2380234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |