US2995545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of brominating butyl rubber in the presence of heterocyclic tertiary amines, product obtained, and vulcanized product thereof
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-09-30
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Granted: 1961-08-08
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Expires: 1977-09-30
Abstract
No abstract record available.
Inventors
- 👤 Delmer L Cottle
- 👤 Jr Leon S Minckler
- 👤 Lawrence T Eby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:10
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/18; C08F8/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A COMPOSITION HAVING AN IODINE NUMBER OF BETWEEN 20 AND 150 WHICH COMPRISES THE REACTION PRODUCT OF BUTYL RUBBER WHICH IS A MAJOR PROPORTION OF AN ISOOLEFIN AND A MINOR PROPORTION OF A MULTIOLEFIN, SAID BUTYL RUBBER HAVING AN IODINE NUMBER OF BETWEEN ABOUT 0.5 AND 18 A BROMINATING AGENT FOR THE SAID BUTYL RUBBER AND A HETEROCYCLIC TERTIARY AMINE SELECTED FROM THE GROUP CONSISTING OF:
Claim 2
Dependent Claim
66 words
A COMPOSITION HAVING AN IODINE NUMBER OF BETWEEN 20 AND 150 WHICH COMPRISES THE REACTION PRODUCT OF BUTYL RUBBER WHICH IS A MAJOR PROPORTION OF AN ISOOLEFIN AND A MINOR PROPORTION OF A MULTIOLEFIN, SAID BUTYL RUBBER HAVING AN IODINE NUMBER OF BETWEEN ABOUT 0.5 AND 18 A BROMINATING AGENT FOR THE SAID BUTYL RUBBER AND A HETEROCYCLIC TERTIARY AMINE SELECTED FROM THE GROUP CONSISTING OF:
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) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |