US3769268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shortstopping free radical polymerization of vinylidene monomers
Assignee: Goodrich Corp
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Filing: 1972-04-14
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Granted: 1973-10-30
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Expires: 1992-04-14
Abstract
Abstract THE FREE RADICAL POLYMERIZATION OF VINYLIDENE MONOMERS HAVING A TERMINAL CH2=C< GROUPING, WITH A CATALYST SYSTEM COMPRISING AN ALKYL BORANE AND A HYDROPEROXIDE OF THE FORMULA ROOH IN WHICH R IS HYDROGEN OR A HYDROCARBON RADIAL, OR A CATALYST SYSTEM OF AN ALKYL BORANE AND OXYGEN, IS EFFECTIVELY TERMINATED BY ADDING A BOROHYDRIDE, SUCH AS NABH4, TO THE POLYMERIZATION MIXTURE.
Inventors
- 👤 P George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:50
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/38; C08F2/42
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |