US3008949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low pressure polymerization of olefins
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1958-04-25
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Granted: 1961-11-14
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Expires: 1978-04-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur W Langer
- 👤 Charles E Morrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:53
CPC Classifications
C; C08; C08F; C08F291/00; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN A LOW PRESSURE PROCESS OF POLYMERIZING ETHYLENE WITH A CATALYST SYSTEM CONSISTING ESSENTIALLY OF A HALIDE OF TITANIUM AND AN ALUMINUM ALKYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRIALKYL ALUMINUM AND DIALKYL ALUMINUM HALIDE, IN THE PRESENCE OF AN INERT DILUENT AND AT A TEMPERATURE OF 0 TO 150*C., THE IMPROVEMENT WHICH COMPRISES EMPLOYING A CARBON BLACK AS A SUPPORT FOR THE CATALYST SYSTEM IN AN AMOUNT OF 50 TO 99.5 WT. PERCENT BASED ON CATALYST WHEREBY REACTOR FOULING IS REDUCED AND THE CARBON BLACK IS DISPERSED IN THE POLYMER PRODUCT, SAID CARBON BLACK BEING SELECTED FROM THE GROUP CONSISTING OF FURNACE BLACKS, CHANNEL BLACKS, LAMP BLACKS, AND ACETYLENE BLACKS.
Claim 2
Dependent Claim
112 words
IN A LOW PRESSURE PROCESS OF POLYMERIZING ETHYLENE WITH A CATALYST SYSTEM CONSISTING ESSENTIALLY OF A HALIDE OF TITANIUM AND AN ALUMINUM ALKYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRIALKYL ALUMINUM AND DIALKYL ALUMINUM HALIDE, IN THE PRESENCE OF AN INERT DILUENT AND AT A TEMPERATURE OF 0 TO 150*C., THE IMPROVEMENT WHICH COMPRISES EMPLOYING A CARBON BLACK AS A SUPPORT FOR THE CATALYST SYSTEM IN AN AMOUNT OF 50 TO 99.5 WT. PERCENT BASED ON CATALYST WHEREBY REACTOR FOULING IS REDUCED AND THE CARBON BLACK IS DISPERSED IN THE POLYMER PRODUCT, SAID CARBON BLACK BEING SELECTED FROM THE GROUP CONSISTING OF FURNACE BLACKS, CHANNEL BLACKS, LAMP BLACKS, AND ACETYLENE BLACKS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-13 | 1965-05-15 | 1965-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-13 | 1969-05-15 | 1969-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-13 | 1973-05-15 | 1973-11-14 | $7700.00 | Window Closed / Lapsed |