US3362943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of polymers of 1-olefins in monomer solution
Assignee: Mobil Oil AS
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Filing: 1964-06-15
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Granted: 1968-01-09
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Expires: 1984-06-15
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Edwards
- 👤 Alfred W Francis
- 👤 William C L Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:24
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/26; C08F110/00; C08F110/04; C08F110/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD FOR SEPARATING TACTIC POLYMER OF A 1-OLEFIN HAVING 4 TO 10 CARBON ATOMS FROM SOLUTION IN ITS LIQUID 1-OLEFIN MONOMER HAVING A CONCENTRATION NOT GREATER THAN ABOUT 30 WEIGHT PERCENT TACTIC POLYMER, THAT COMPRISES HEATING SAID SOLUTION, AT A PRESSURE SUFFICIENT TO MAINTAIN LIQLUID PHASE, TO A TEMPERATURE HIGHER THAN THE UPPER CLOUD POINT OF SAID SOLUTION, THEREBY OBTAINING A POLYMER-RICH LIQUID PHASE AND A POLYMER-LEAN LIQUID PHASE; SEPARATING THE POLYMER-RICH PHASE; AND DISTILLING THE 1-OLEFIN MONOMER FROM SAID POLYMER-RICH PHASE.
Claim 2
Independent Claim
83 words
A METHOD FOR SEPARATING TACTIC POLYMER OF A 1-OLEFIN HAVING 4 TO 10 CARBON ATOMS FROM SOLUTION IN ITS LIQUID 1-OLEFIN MONOMER HAVING A CONCENTRATION NOT GREATER THAN ABOUT 30 WEIGHT PERCENT TACTIC POLYMER, THAT COMPRISES HEATING SAID SOLUTION, AT A PRESSURE SUFFICIENT TO MAINTAIN LIQLUID PHASE, TO A TEMPERATURE HIGHER THAN THE UPPER CLOUD POINT OF SAID SOLUTION, THEREBY OBTAINING A POLYMER-RICH LIQUID PHASE AND A POLYMER-LEAN LIQUID PHASE; SEPARATING THE POLYMER-RICH PHASE; AND DISTILLING THE 1-OLEFIN MONOMER FROM SAID POLYMER-RICH PHASE.
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) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |