US2938019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of olefins
Assignee: Sunoco Inc
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Filing: 1958-07-14
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Granted: 1960-05-24
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Expires: 1978-07-14
Abstract
No abstract record available.
Inventors
- 👤 Archibald P Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:18
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
PROCESS FOR THE POLYMERIZATION OF OLEFINS WHICH COMPRISES CONTACTING, UNDER POLYMERIZATRION CONDITIONS, AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, PROPYLENE, AND BUTENE-1 WITH A CATALYTIC SYSTEM PREPARED BY INCORPORATING TITANIUM TETRACHLORIDE AND TITANIUM TETRAIODIDE IN AN INERT LIQUID HYDROCARBON MEDIUM IN A MOL RATIO OF TETRAIODIDE TO TETRACHLORIDE OF FROM 0.0005 TO 0.12, CONTACTING THE RESULTING SYSTEM WITH ETHYL ALUMINUM DICHLORIDE IN A MOL RATIO OF DICHLORIDE TO TETRACHLORIDE PLUS TETRAIODIDE OF FROM 1 TO 5, AND THEREAFTER WITH ALUMINUM TRIETHYL IN A MOL RATIO OF TRIETHYL TO TETRACHLORIDE PLUS TETRAIODIDE OF FROM 0.2 TO 10.
Claim 2
Dependent Claim
98 words
PROCESS FOR THE POLYMERIZATION OF OLEFINS WHICH COMPRISES CONTACTING, UNDER POLYMERIZATRION CONDITIONS, AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, PROPYLENE, AND BUTENE-1 WITH A CATALYTIC SYSTEM PREPARED BY INCORPORATING TITANIUM TETRACHLORIDE AND TITANIUM TETRAIODIDE IN AN INERT LIQUID HYDROCARBON MEDIUM IN A MOL RATIO OF TETRAIODIDE TO TETRACHLORIDE OF FROM 0.0005 TO 0.12, CONTACTING THE RESULTING SYSTEM WITH ETHYL ALUMINUM DICHLORIDE IN A MOL RATIO OF DICHLORIDE TO TETRACHLORIDE PLUS TETRAIODIDE OF FROM 1 TO 5, AND THEREAFTER WITH ALUMINUM TRIETHYL IN A MOL RATIO OF TRIETHYL TO TETRACHLORIDE PLUS TETRAIODIDE OF FROM 0.2 TO 10.
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) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |