US3219641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for modifying butyl rubber
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1961-05-10
•
Granted: 1965-11-23
•
Expires: 1981-05-10
Abstract
No abstract record available.
Inventors
- 👤 Bruce R Tegge
- 👤 Rowe Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:20
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/04; C08F210/08; C08F210/10; C08F210/12; C08F8/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN THE PROCESS OF MODIFYING A POLYMER OF A MAJOR PORTION OF A C4 TO C7 ISOOLEFIN AND A MINOR PORTION OF A C4 TO C14 MULTIOLEFIN BY REACTING SAID OLEFINS IN A REACTION ZONE, WITH AT LEAST ONE ADDITIONAL MONOMER BOILING ABOVE 100*C. SELECTED FROM THE GROUP CONSISTING OF MULIOLEFINS AND VINYL AROMATICS, WHEREIN THE UNREACTED PORTION OF THE EFFLUENT OF SAID REACTION ZONE IS VOLATILIZED, SEAT THROUGH A CONDENSATION ZONE, SEPARATED INTO A CONDENSATE AND AN UNCONDENSED CONDENSATION ZONE EFFLUENT, THE LATTER OF WHICH IS SENT TO A DRYING ZONE, THE IMPROVEMENT WHICH COMPRISES SUBJECTING THE UNCONDENSED CONDENSATION ZONE EFFLUENT TO CONTACT WITH A C6-C20 HYDROCARBON SCRUBBING OIL PRIOR TO PASSING SAID UNCONDENSED VOLATILIZED EFFLUENT TO SAID DRYING ZONE.
Claim 2
Dependent Claim
121 words
IN THE PROCESS OF MODIFYING A POLYMER OF A MAJOR PORTION OF A C4 TO C7 ISOOLEFIN AND A MINOR PORTION OF A C4 TO C14 MULTIOLEFIN BY REACTING SAID OLEFINS IN A REACTION ZONE, WITH AT LEAST ONE ADDITIONAL MONOMER BOILING ABOVE 100*C. SELECTED FROM THE GROUP CONSISTING OF MULIOLEFINS AND VINYL AROMATICS, WHEREIN THE UNREACTED PORTION OF THE EFFLUENT OF SAID REACTION ZONE IS VOLATILIZED, SEAT THROUGH A CONDENSATION ZONE, SEPARATED INTO A CONDENSATE AND AN UNCONDENSED CONDENSATION ZONE EFFLUENT, THE LATTER OF WHICH IS SENT TO A DRYING ZONE, THE IMPROVEMENT WHICH COMPRISES SUBJECTING THE UNCONDENSED CONDENSATION ZONE EFFLUENT TO CONTACT WITH A C6-C20 HYDROCARBON SCRUBBING OIL PRIOR TO PASSING SAID UNCONDENSED VOLATILIZED EFFLUENT TO SAID DRYING ZONE.
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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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |