Patent US2962472A successfully refreshed from Google Patents.
US2962472A
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Polymerization of monoolefins in a dispersion of lithium and a partially polymerized diolefin
Assignee: Sunoco Inc
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Filing: 1957-11-22
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Granted: 1960-11-29
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Expires: 1977-11-22
Abstract
No abstract record available.
Inventors
- 👤 Archibald P Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:23
CPC Classifications
C; C08; C08F; C08F297/00; C08F297/02; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS FOR POLYMERIZING ALPHA-MONO-OLEFINS WHICH COMPRISES CONTACTING AT TEMPERATURE OF FROM 0* C. TO 100*C. A DISPERSION OF LITHIUM IN AN INSERT LIQUID SATURATED HYDROCARBON MEDIUM WITH A CONJUGATED DIOLEFIN HAVING FROM 4 TO 6 CARBON ATOMS WHEREBY DIOLEFIN POLYMERS NOT BEYOND THE INCIPIENT SOLID POLYMER STAGE ARE FORMED, AND THEN CONTACTING THE RESULTANT REACTION PRODUCT WITH AN ALPHA-OLEFIN HAVING FROM 2 TO 8 CARBON ATOMS AT A TEMPERATURE OF FROM 20*C. TO 130*C., AND RECOVERING A SOLID POLYMER REACTION PRODUCT.
Claim 2
Dependent Claim
82 words
A PROCESS FOR POLYMERIZING ALPHA-MONO-OLEFINS WHICH COMPRISES CONTACTING AT TEMPERATURE OF FROM 0* C. TO 100*C. A DISPERSION OF LITHIUM IN AN INSERT LIQUID SATURATED HYDROCARBON MEDIUM WITH A CONJUGATED DIOLEFIN HAVING FROM 4 TO 6 CARBON ATOMS WHEREBY DIOLEFIN POLYMERS NOT BEYOND THE INCIPIENT SOLID POLYMER STAGE ARE FORMED, AND THEN CONTACTING THE RESULTANT REACTION PRODUCT WITH AN ALPHA-OLEFIN HAVING FROM 2 TO 8 CARBON ATOMS AT A TEMPERATURE OF FROM 20*C. TO 130*C., AND RECOVERING A SOLID POLYMER REACTION PRODUCT.
References Cited (Backward Citations)
US2512697A
Cited
US2762790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |