US2999087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of piperylene
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1956-04-13
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Granted: 1961-09-05
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Expires: 1976-04-13
Abstract
No abstract record available.
Inventors
- 👤 Robert M Thomas
- 👤 Lawrence T Eby
- 👤 Charles W Seelbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:12
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04; C08F136/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR MAKING SOLID POLYPIPERYLENE HAVING A HARRIS MOLECULAR WEIGHT OF ABOUT 10,000 TO 15,000 AND AN UNSATURATION OF ABOUT 200 TO 250 CG. OF IODINE PER GRAM, WHICH COMPRISES CONTACTING PIPERLENE WITH A CATALYST OBTAINED BY MIXING TITANIUM TETRACHLORIDE WITH AN ALUMINUM TRIALKYL OF 1 TO 20 CARBON ATOMS IN THE ALKYL GROUPS IN A RATIO OF ABOUT 3 MOLES OF THE ALUMINUM TRIALKYL PER MOLE OF TITANIUM TETRACHLORIDE, AT A POLYMERIZATION TEMPERATURE OF ABOUT 60* TO 100*C. AND A PRESSURE OF ABOUT 300 TO 1000 P.S.I.G. IN AN INERT DILUENT.
Claim 2
Dependent Claim
93 words
A PROCESS FOR MAKING SOLID POLYPIPERYLENE HAVING A HARRIS MOLECULAR WEIGHT OF ABOUT 10,000 TO 15,000 AND AN UNSATURATION OF ABOUT 200 TO 250 CG. OF IODINE PER GRAM, WHICH COMPRISES CONTACTING PIPERLENE WITH A CATALYST OBTAINED BY MIXING TITANIUM TETRACHLORIDE WITH AN ALUMINUM TRIALKYL OF 1 TO 20 CARBON ATOMS IN THE ALKYL GROUPS IN A RATIO OF ABOUT 3 MOLES OF THE ALUMINUM TRIALKYL PER MOLE OF TITANIUM TETRACHLORIDE, AT A POLYMERIZATION TEMPERATURE OF ABOUT 60* TO 100*C. AND A PRESSURE OF ABOUT 300 TO 1000 P.S.I.G. IN AN INERT DILUENT.
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) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |