US3578629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing reinforced polyolefins
Assignee: Monsanto Co
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Filing: 1968-05-21
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Granted: 1971-05-11
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Expires: 1988-05-21
Abstract
Abstract PROCESS FOR PREPARING REINFORCED POLYOLEFINS BY A ZIEGLERTYPE LOW PRESSURE POLYMERIZATION PROCESS COMPRISING CONDUCTING THE POLYMERIZATION OF A MONOMERIC A-OLEFIN IN THE PRESENCE OF A FILLER WHICH HAS BEEN PRETREATED AND PREACTED WITH AN ORGANOSILANE OF THE FORMULA (X-)A-SI(-Y)B(-R-Z)C WHERE X IS A HYDROLZABLE GROUP CAPABLE OF REACTING WITH A HYDROXYL GROUP, Y IS A MONOVALENT HYDROCARBON GROUP, R-IS A DIVALENT HYDROCARBON GROUP. Z IS A GROUP CONTAINING ETHYLENIC UNSATURATION, A IS AN INTEGER FROM 1 TO 3, B IS AN INTEGER FROM 0 TO 2, AND C IS AN INTEGER FROM 1 TO 3 PROVIDED THAT THE SUM OF A+B+C EQUALS 4.
Inventors
- 👤 Robert J Mcmanimie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:18
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/12; C01; C01B; C01B33/00; C01B33/113; C08; C08F; C08F10/00; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |