Patent US1276205A successfully refreshed from Google Patents.
Patent US3046264A successfully refreshed from Google Patents.
US3046264A
Expired / Lapsed
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Olefin polymerization process
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1958-04-01
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Granted: 1962-07-24
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Expires: 1978-04-01
Abstract
No abstract record available.
Inventors
- 👤 Tornqvist Erik
- 👤 Jr Arthur W Langer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:55
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/04; C08F10/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE PROCESS FOR FORMING A HIGH CRYSTALLINITY POLYMER FROM PROPYLENE COMPRISING THE STEPS OF PASSING SAID OLEFIN INTO AN AROMATIC HYDROCARBON DILUENT CONTAINING FROM 0.1 TO 0.5 WT. PRECENT OF A CATALYST OF A COCRYSTALLIZED TITANIUM TRICHLORIDE-ALUMINUM CHLORIDE ACTIVATED WITH FROM 0.1 TO 5.0 MOLS OF A TRIALKYL ALUMINUM COMPOUND, AT A TEMPERATURE IN THE RANGE OF 10 TO 50*C., AND AT SUBSTANTIALLY ATMOSPHERIC PRESSURE, INCREASING SAID TEMPERATURE AT A RATE NO GREATER THAN 2*C. PER MINUTE UNTIL A POLYMERIZATION TEMPERATURE IN THE RANGE OF 60* TO 120*C. IS OBTAINED WHILE CONTINUING THE PASSAGE OF SAID OLEFIN INTO SAID AROMATIC DILUENT, MAINTAINING THE POLYMERIZATION TEMPERATURE TO POLYMERIZE PROPYLENE, AND ISOLATING SAID HIGH CRYSTALLINITY POLYMER THEREFROM.
Claim 2
Dependent Claim
115 words
THE PROCESS FOR FORMING A HIGH CRYSTALLINITY POLYMER FROM PROPYLENE COMPRISING THE STEPS OF PASSING SAID OLEFIN INTO AN AROMATIC HYDROCARBON DILUENT CONTAINING FROM 0.1 TO 0.5 WT. PRECENT OF A CATALYST OF A COCRYSTALLIZED TITANIUM TRICHLORIDE-ALUMINUM CHLORIDE ACTIVATED WITH FROM 0.1 TO 5.0 MOLS OF A TRIALKYL ALUMINUM COMPOUND, AT A TEMPERATURE IN THE RANGE OF 10 TO 50*C., AND AT SUBSTANTIALLY ATMOSPHERIC PRESSURE, INCREASING SAID TEMPERATURE AT A RATE NO GREATER THAN 2*C. PER MINUTE UNTIL A POLYMERIZATION TEMPERATURE IN THE RANGE OF 60* TO 120*C. IS OBTAINED WHILE CONTINUING THE PASSAGE OF SAID OLEFIN INTO SAID AROMATIC DILUENT, MAINTAINING THE POLYMERIZATION TEMPERATURE TO POLYMERIZE PROPYLENE, AND ISOLATING SAID HIGH CRYSTALLINITY POLYMER THEREFROM.
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) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |