US2980664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of olefins
Assignee: Sunoco Inc
•
Filing: 1959-05-06
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Granted: 1961-04-18
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Expires: 1979-05-06
Abstract
No abstract record available.
Inventors
- 👤 Archibald P Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:24
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A PROCESS FOR THE POLYMERIZATION OF OLEFINS WHICH COMPRISES CONTACTING AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, PROPYLENE, AND BUTENE-1 WITH A CATALYTIC SYSTEM CONSISTING ESSENTIALLY OF ONE PREPARED BY MIXING TITANIUM TETRACHLORIDE WITH ABOUT 1 TO ABOUT 15 MOL PERCENT BASED ON SAID TITANIUM TETRACHLORIDE OF AN ANHYDROUS HALIDE OF A METAL OF GROUP IB OF THE PERIODIC TABLE WHEREIN SAID HALIDE IS SELECTED FROM THE GROUP CONSISTING OF A CHLORIDE, AN IODIDE AND A BROMIDE, REACTING THE MIXTURE WITH AT LEAST ONE MOL OF AN ALUMINUM ALKYL DICHLORIDE, IN THE PRESENCE OF AN INERT SOLVENT, ALLOWING THE REACTION BETWEEN THE TITANIUM TETRACHLORIDE AND THE ALUMINUM ALKYL DICHLORIDE TO GO TO SUBSTANTIAL COMPLETION, AND ADDING TO THE REACTION MIXTURE AT LEAST ONE MOL OF AN ALUMINUM TRIALKYL PER MOL OF TITANIUM TETRACHLORIDE, SAID POLYMERIZATION BEING CARRIED OUT AT A TEMPERATURE BETWEEN 60*F. AND 130*F.
Claim 2
Dependent Claim
147 words
A PROCESS FOR THE POLYMERIZATION OF OLEFINS WHICH COMPRISES CONTACTING AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, PROPYLENE, AND BUTENE-1 WITH A CATALYTIC SYSTEM CONSISTING ESSENTIALLY OF ONE PREPARED BY MIXING TITANIUM TETRACHLORIDE WITH ABOUT 1 TO ABOUT 15 MOL PERCENT BASED ON SAID TITANIUM TETRACHLORIDE OF AN ANHYDROUS HALIDE OF A METAL OF GROUP IB OF THE PERIODIC TABLE WHEREIN SAID HALIDE IS SELECTED FROM THE GROUP CONSISTING OF A CHLORIDE, AN IODIDE AND A BROMIDE, REACTING THE MIXTURE WITH AT LEAST ONE MOL OF AN ALUMINUM ALKYL DICHLORIDE, IN THE PRESENCE OF AN INERT SOLVENT, ALLOWING THE REACTION BETWEEN THE TITANIUM TETRACHLORIDE AND THE ALUMINUM ALKYL DICHLORIDE TO GO TO SUBSTANTIAL COMPLETION, AND ADDING TO THE REACTION MIXTURE AT LEAST ONE MOL OF AN ALUMINUM TRIALKYL PER MOL OF TITANIUM TETRACHLORIDE, SAID POLYMERIZATION BEING CARRIED OUT AT A TEMPERATURE BETWEEN 60*F. AND 130*F.
References Cited (Backward Citations)
US2888448A
Cited
GB789781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |