US2962482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for brominating copolymers
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1958-04-02
•
Granted: 1960-11-29
•
Expires: 1978-04-02
Abstract
No abstract record available.
Inventors
- 👤 Delmer L Cottle
- 👤 Jr Leon S Minckler
- 👤 Lemiszka Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:11
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/18; C08F8/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A PROCESS FOR BROMINATING A BUTYL RUBBER WHICH IS A COPLYMER OF A MAJOR PROPORTION OF A C4 TO C8 ISOOLEFIN AND A MINOR PROPORTION OF A C4 TO C14 MULTIOLEFIN SO AS TO CONTAIN AT LEAST ABOUT 0.5 WEIGHT PERCENT COMBINED BROMINE BUT NOT MORE THAN ABOUT 3 ATOMS OF COMBINED BROMINE PER DOUBLE BOND IN THE COPOLYMER, THE IMPROVEMENT WHICH COMPRISES ADDING 0.2 TO 1 MOL OF GASEOUS CHLORINE PER MOLE OF ADDED BROMINE TO THE REACTION MIXTURE AFTER THE BROMINATION REACTION IS ONLY PARTIALLY COMPLETE AND FINISHING UP THE BROMINATION IN THE PRESENCE OF THE CHLORINE GAS.
Claim 2
Dependent Claim
101 words
IN A PROCESS FOR BROMINATING A BUTYL RUBBER WHICH IS A COPLYMER OF A MAJOR PROPORTION OF A C4 TO C8 ISOOLEFIN AND A MINOR PROPORTION OF A C4 TO C14 MULTIOLEFIN SO AS TO CONTAIN AT LEAST ABOUT 0.5 WEIGHT PERCENT COMBINED BROMINE BUT NOT MORE THAN ABOUT 3 ATOMS OF COMBINED BROMINE PER DOUBLE BOND IN THE COPOLYMER, THE IMPROVEMENT WHICH COMPRISES ADDING 0.2 TO 1 MOL OF GASEOUS CHLORINE PER MOLE OF ADDED BROMINE TO THE REACTION MIXTURE AFTER THE BROMINATION REACTION IS ONLY PARTIALLY COMPLETE AND FINISHING UP THE BROMINATION IN THE PRESENCE OF THE CHLORINE GAS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |