Patent US3296186A successfully refreshed from Google Patents.
US3296186A
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Stabilization of epoxidized polymers of butadiene with para-benzoquinone
Assignee: FMC Corp
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Filing: 1963-06-05
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Granted: 1967-01-03
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Expires: 1983-06-05
Abstract
No abstract record available.
Inventors
- 👤 Louis T Gunkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:48
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/027; C08K; C08K5/00; C08K5/04; C08K5/07; C08K5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METHOD OF STABILIZING AN EPOXIDIZED POLYMER OF BUTADIENE HAVING AN OXIRANE OXYGEN CONTENT OF AT LEAST 6% BY WEIGHT IN WHICH AT LEAST 50% BY WEIGHT OF THE POLYMER FORMING UNITS ARE DERIVED FROM BUTADIENE, WHICH COMPRISES MIXING THE EPOXIDIZED POLYMER WITH 0.01-1.0 PART BY WEIGHT OF PARA-BENZOQUINONE PER 100 PARTS OF EPOXIDIZED POLYMER.
Claim 2
Independent Claim
55 words
A METHOD OF STABILIZING AN EPOXIDIZED POLYMER OF BUTADIENE HAVING AN OXIRANE OXYGEN CONTENT OF AT LEAST 6% BY WEIGHT IN WHICH AT LEAST 50% BY WEIGHT OF THE POLYMER FORMING UNITS ARE DERIVED FROM BUTADIENE, WHICH COMPRISES MIXING THE EPOXIDIZED POLYMER WITH 0.01-1.0 PART BY WEIGHT OF PARA-BENZOQUINONE PER 100 PARTS OF EPOXIDIZED POLYMER.
References Cited (Backward Citations)
US2867672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |