US2494585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefinic polymerization in the presence of fluorine compounds
Assignee: Standard Oil Development Co
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Filing: 1944-09-30
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Granted: 1950-01-17
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Expires: 1964-09-30
Abstract
No abstract record available.
Inventors
- 👤 Jr John S Saylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:38
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/04; C08F210/08; C08F210/10; C08F210/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR THE COPOLYMERIZATION OF AN ISOOLEFINIC HYDROCARBON OF 4 TO 7 CARBON ATOMS IN THE MOLECULE WITH A POLYOLEFINIC HYDROCARBON OF 4 TO 14 CARBON ATOMS IN THE MOLECULE WHICH COMPRISES KNEADING THE MIXTURE OF THE ISOOLEFIN AND THE POLYOLEFIN AT A TEMPERATURE BETWEEN -20*C. AND -164*C. IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST AND A CHLOROFLUOR ALKANE WHICH IS SOLID AT THE REACTION TEMPERATURE AND VOLATILE BELOW 100*F.
Claim 2
Dependent Claim
71 words
A PROCESS FOR THE COPOLYMERIZATION OF AN ISOOLEFINIC HYDROCARBON OF 4 TO 7 CARBON ATOMS IN THE MOLECULE WITH A POLYOLEFINIC HYDROCARBON OF 4 TO 14 CARBON ATOMS IN THE MOLECULE WHICH COMPRISES KNEADING THE MIXTURE OF THE ISOOLEFIN AND THE POLYOLEFIN AT A TEMPERATURE BETWEEN -20*C. AND -164*C. IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST AND A CHLOROFLUOR ALKANE WHICH IS SOLID AT THE REACTION TEMPERATURE AND VOLATILE BELOW 100*F.
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) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |