US3718636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalysts and process for the polymerization of olefins
Assignee: Solvay SA
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Filing: 1970-01-22
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Granted: 1973-02-27
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Expires: 1990-01-22
Abstract
Abstract CATALYTIC FOR THE LOW PRESSURE POLYMERIZATION AND COPOLYMERIZATION OF OLEFINS ARE PROVIDED WHICH COMPRISES AN ACTIVATOR WHICH IS AN ORGANOMETALLIC COMPOUND AND A SOLID PRODUCT OBTAINED BY REACTING A SUPPORT COMPRISED OF A SOLID BIVALENT METAL COMPOUND WITH AN ORGANOMETALLIC COMPOUND, SEPARATING THE RESULTING SOLID PRODUCT, AND THEN REACTING THIS PRODUCT WITH A HALOGENATED DERIVATE OF A TRANSITION METAL. THE ORGANOMETALLIC COMPOUND REACTED WITH THE SUPPORT MAY BE THE SAME OR DIFFERENT FROM THE ACTIVATING COMPOUND. THE POLYMERIZATION AND COPOLYMERIZATION OF OLEFINS IS CARRIED OUT USING THESE CATALYST.
Inventors
- 👤 J Stevens
- 👤 M George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:05
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) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |