US2984658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin polymerization with catalyst of water-treated titanium compound and an alkyl aluminum compound
Assignee: Hoechst AG
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Filing: 1957-04-02
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Granted: 1961-05-16
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Expires: 1977-04-02
Abstract
No abstract record available.
Inventors
- 👤 Seydel Gerhard
- 👤 Beermann Claus
- 👤 Bahr Heinz-Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:33
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN A PROCESS OF POLYMERIZING ETHYLENE IN THE PRESENCE OF A CATALYTIC AMOUNT OF A TWO-COMPONENT CATALYST SYSTEM COMPRISING TITANIUM TRICHLORIDE AND DIETHYL ALUMINUM MONOCHLORIDE, THE IMPROVED METHOD OF ACCELERATING THE POLYMERIZATION REACTION BY TREATING SAID TITANIUM TRICHLORIDE WITH 0.5-8 MOL PERCENT OF WATER BASED ON THE WEIGHT OF TITANIUM TRICHLORIDE, AND ACTIVATING THE WATER-TREATED CATALYST COMPOUND DURING POLYMERIZATION BY THE ADDITION THERETO OF SAID DIETHYL ALUMINUM MONOCHLORIDE.
Claim 2
Dependent Claim
68 words
IN A PROCESS OF POLYMERIZING ETHYLENE IN THE PRESENCE OF A CATALYTIC AMOUNT OF A TWO-COMPONENT CATALYST SYSTEM COMPRISING TITANIUM TRICHLORIDE AND DIETHYL ALUMINUM MONOCHLORIDE, THE IMPROVED METHOD OF ACCELERATING THE POLYMERIZATION REACTION BY TREATING SAID TITANIUM TRICHLORIDE WITH 0.5-8 MOL PERCENT OF WATER BASED ON THE WEIGHT OF TITANIUM TRICHLORIDE, AND ACTIVATING THE WATER-TREATED CATALYST COMPOUND DURING POLYMERIZATION BY THE ADDITION THERETO OF SAID DIETHYL ALUMINUM MONOCHLORIDE.
References Cited (Backward Citations)
US2699457A
Cited
BE533362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |