US3133092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of epoxypolybutadienes with hydroquinone
Assignee: FMC Corp
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Filing: 1961-03-15
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Granted: 1964-05-12
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Expires: 1981-03-15
Abstract
No abstract record available.
Inventors
- 👤 Nowlin Gene
- 👤 Murray H Reich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:20
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/027; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A METHOD OF STABILIZING AN EPOXYPOLYBUTADIENE WHICH COMPRISES HEATING AN EPOXYBUTADIENE OBTAINED BY EPOXIDIZING A POLYBUTADIENE HAVING A NUMBER AVERAGE MOLECULAR WEIGHT OF 100-10,000, AND EPOXYBUTADIENE HAVING AN EPOXY OXYGEN CONTENT OF AT LEAST 1% BY WEIGHT, IN THE PRESENCE OF 0.01-0.5 PART BY WEIGHT OF HYDROQUINONE PER 100 PARTS OF EPOXYPOLYBUTADIENE AT A TEMPERATURE OF AT LEAST 40*C. FOR A PERIOD OF AT LEAST 10 MINUTES, AND RECOVERING EPOXYPOLYBUTADIENE HAVING A REDUCED PEROXYGEN CONTENT.
Claim 2
Independent Claim
75 words
A METHOD OF STABILIZING AN EPOXYPOLYBUTADIENE WHICH COMPRISES HEATING AN EPOXYBUTADIENE OBTAINED BY EPOXIDIZING A POLYBUTADIENE HAVING A NUMBER AVERAGE MOLECULAR WEIGHT OF 100-10,000, AND EPOXYBUTADIENE HAVING AN EPOXY OXYGEN CONTENT OF AT LEAST 1% BY WEIGHT, IN THE PRESENCE OF 0.01-0.5 PART BY WEIGHT OF HYDROQUINONE PER 100 PARTS OF EPOXYPOLYBUTADIENE AT A TEMPERATURE OF AT LEAST 40*C. FOR A PERIOD OF AT LEAST 10 MINUTES, AND RECOVERING EPOXYPOLYBUTADIENE HAVING A REDUCED PEROXYGEN CONTENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |