US2989504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanization of polymer with nu, nu'-bismaleimides and compositions thereof
Assignee: Uniroyal Inc
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Filing: 1960-05-18
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Granted: 1961-06-20
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Expires: 1980-05-18
Abstract
No abstract record available.
Inventors
- 👤 Julian R Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:05
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS FOR VULCANIZING RUBBERS SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF ALIPHATIC CONJUGATED DIOLEFIN HYDROCARBONS, HETEROPOLYMERS OF SUCH DIOLEFIN HYDROCARBONS WITH COPOLYMERIZABLE MONOOLEFINIC COMPOUNDS, SAID HETEROPOLYMERS CONTAINING AT LEAST 35% OF SAID DIOLEFIN HYDROCARBON COPOLYMERIZED THEREIN, COMPRISING HEATING AT A TEMPERATURE OF FROM 200* F. TO 400* F. FOR A PERIOD OF FROM 2 MINUTES TO 8 HOURS A MIXTURE COMPRISED OF 100 PARTS BY WEIGHT OF THE RUBBER, AND FROM 0.25 TO 6.0 PARTS BY WEIGHT OF A N,N''-LINKED BISMALEIMIDE CURING AGENT.
Claim 2
Dependent Claim
85 words
A PROCESS FOR VULCANIZING RUBBERS SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF ALIPHATIC CONJUGATED DIOLEFIN HYDROCARBONS, HETEROPOLYMERS OF SUCH DIOLEFIN HYDROCARBONS WITH COPOLYMERIZABLE MONOOLEFINIC COMPOUNDS, SAID HETEROPOLYMERS CONTAINING AT LEAST 35% OF SAID DIOLEFIN HYDROCARBON COPOLYMERIZED THEREIN, COMPRISING HEATING AT A TEMPERATURE OF FROM 200* F. TO 400* F. FOR A PERIOD OF FROM 2 MINUTES TO 8 HOURS A MIXTURE COMPRISED OF 100 PARTS BY WEIGHT OF THE RUBBER, AND FROM 0.25 TO 6.0 PARTS BY WEIGHT OF A N,N''-LINKED BISMALEIMIDE CURING AGENT.
References Cited (Backward Citations)
US2822342A
Cited
US2925407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |