US2898329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1955-09-29
•
Granted: 1959-08-04
•
Expires: 1975-09-29
Abstract
No abstract record available.
Inventors
- 👤 Allen R Kittleson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:57
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN THE PROCESS OF POLYMERIZING UNSATURATAED HYDROCARBONS SELECTED FROM THE GROUP CONSISTING A ETHYLENE AND PROPYLENE IN THE PRESENCE OF A POLYMERIZING AMOUNT OF A CATALYST COMPLEX OF AN ALKYL ALUMINUM COMPOUND CONTAINING AT LEAST 2 ALKYL GROUPS AND A TITANIUM HALIDE COMPOUND USING A MOLOR RATIO OF ALKYL ALUMINUM COMPOUND TO THE TITANIUM COMPOUND OF ABOUT 0.5/1 TO 10/1, AT A TEMPERATURE OF ABOUT 0 TO 100* C., AND PRESSURE OF ABOUT 1 TO 10 ATMOSPHERES, AND IN THE PRESENCE OF A LIQUID DILUENT, THE IMPROVEMENT COMPRISING USING AS DILUENT AN ORGANIC LIQUID COMPRISING AT LEAST 50 VOL. PERCENT OF MONOCHLOROBENZENE, WHEREBY A CATALYST EFFICIENCY ABOVE 150 GRAMS OF POLYMER PER GRAM OF CATALYST IS OBTAINED.
Claim 2
Dependent Claim
117 words
IN THE PROCESS OF POLYMERIZING UNSATURATAED HYDROCARBONS SELECTED FROM THE GROUP CONSISTING A ETHYLENE AND PROPYLENE IN THE PRESENCE OF A POLYMERIZING AMOUNT OF A CATALYST COMPLEX OF AN ALKYL ALUMINUM COMPOUND CONTAINING AT LEAST 2 ALKYL GROUPS AND A TITANIUM HALIDE COMPOUND USING A MOLOR RATIO OF ALKYL ALUMINUM COMPOUND TO THE TITANIUM COMPOUND OF ABOUT 0.5/1 TO 10/1, AT A TEMPERATURE OF ABOUT 0 TO 100* C., AND PRESSURE OF ABOUT 1 TO 10 ATMOSPHERES, AND IN THE PRESENCE OF A LIQUID DILUENT, THE IMPROVEMENT COMPRISING USING AS DILUENT AN ORGANIC LIQUID COMPRISING AT LEAST 50 VOL. PERCENT OF MONOCHLOROBENZENE, WHEREBY A CATALYST EFFICIENCY ABOVE 150 GRAMS OF POLYMER PER GRAM OF CATALYST IS OBTAINED.
References Cited (Backward Citations)
BE533362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |