US3658779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process and catalyst
Assignee: Phillips Petroleum Co
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Filing: 1970-07-14
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Granted: 1972-04-25
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Expires: 1990-07-14
Abstract
Abstract USE OF A BICYCLIC (2.2.2)OCTANE ADJUVANT OF THE FORMULA 4-R-2,6,7-TRI(OXA)-1-PHOSPHABICYCLO(2.2.2)OCTANE WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF H, A HALOGEN AND A HYDROCARBON RADICAL HAVING FROM 1 TO 20 CARBON ATOMS FOR A BINARY POLYMERIZATION CATALYST SYSTEM CONTAINING A COMPLEX OF THE FORMULA TICL3.1/3ALCL3 AND AT LEAST ONE COMPOUND OF THE FORMULA R''NALX3-N WHEREIN R'' IS ALKYL, ARYL, CYCLOALKYL OR COMBINATIONS THEREOF HAVING UP TO 20 CARBON ATOMS, X IS A HALOGEN, AND N IS 2 OR 3, RESULTS IN THE INCREASE PRODUCTION OF POLYMERS OF 1-OLEFINS HAVING AN ACCEPTABLE FLEXURAL MODULUS AND LOWER XYLENES-SOLUBLES CONTENT.
Inventors
- 👤 Gerald R Kahle
- 👤 Lawrence M Fodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:59
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |