US2816098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing brominated isoolefin-polyolefin interpolymer derivatives
Assignee: Goodrich Corp
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Filing: 1954-05-03
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Granted: 1957-12-10
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Expires: 1974-05-03
Abstract
No abstract record available.
Inventors
- 👤 Richard T Morrissey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:06
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/18; C08F8/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN THE DRY PROCESS FOR BROMINATING SOLID, PLASTIC, ISOOLEFIN-POLYOLEFIN INTERPOLYMERS, THE IMPROVEMENT WHICH COMPRISES INTIMATELY MIXING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF A FINELY-DIVIDED SILICON OXIDE AND CARBON BLACK AND AN AMOUNT OF AN N-BROMOHYDANTOIN SUFFICIENT TO BROMINATE THE SOLID ISOOLEFIN-POLYOLEFIN INTERPOLYMER TO CONTAIN AT LEAST 0.5 WEIGHT PERCENT COMBINED BROMINE OF ADDITION WITH AN INTERPOLYMER OF AN ISOOLEFINIC HYDROCARBON CONTAINING 4 TO 8 CARBON ATOMS AND A TERMINAL METHYLENE GROUP AND A POLYOLEFIN HYDROCARBON AT A TEMPERATURE OF LESS THAN 170*F. AND THEREAFTER HEAT ING THE MIXTURE AT A TEMPERATURE ABOVE ABOUT 170*F. FOR A TIME SUFFICIENT TO DEVELOP THE BROMINE-CONTAINING INTERPOLYMER DERIVATIVE.
Claim 2
Dependent Claim
106 words
IN THE DRY PROCESS FOR BROMINATING SOLID, PLASTIC, ISOOLEFIN-POLYOLEFIN INTERPOLYMERS, THE IMPROVEMENT WHICH COMPRISES INTIMATELY MIXING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF A FINELY-DIVIDED SILICON OXIDE AND CARBON BLACK AND AN AMOUNT OF AN N-BROMOHYDANTOIN SUFFICIENT TO BROMINATE THE SOLID ISOOLEFIN-POLYOLEFIN INTERPOLYMER TO CONTAIN AT LEAST 0.5 WEIGHT PERCENT COMBINED BROMINE OF ADDITION WITH AN INTERPOLYMER OF AN ISOOLEFINIC HYDROCARBON CONTAINING 4 TO 8 CARBON ATOMS AND A TERMINAL METHYLENE GROUP AND A POLYOLEFIN HYDROCARBON AT A TEMPERATURE OF LESS THAN 170*F. AND THEREAFTER HEAT ING THE MIXTURE AT A TEMPERATURE ABOVE ABOUT 170*F. FOR A TIME SUFFICIENT TO DEVELOP THE BROMINE-CONTAINING INTERPOLYMER DERIVATIVE.
References Cited (Backward Citations)
US2631984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |