Patent US2987595A successfully refreshed from Google Patents.
US2986531A
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US
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Polymerization catalyst
Assignee: EIDP Inc
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Filing: 1955-12-08
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Granted: 1961-05-30
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Expires: 1975-12-08
Abstract
No abstract record available.
Inventors
- 👤 Schreyer Ralph Courtenay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:40
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A POLYMERIZATION CATALYST COMPOSITION, COMPRISING THE PRODUCT OBTAINED BY REACTING AN ALUMINUM COMPOUND OF THE CLASS CONSISTING OF LIAIR4 AND COMPOUNDS OF THE FORMULA AIRNX(3-N), X BEING HALOGEN OF THE CLASS CONSISTING OF CHLORINE AND BROMINE, R BEING ALKYL, N BEING A NUMBER FROM 1 TO 3 INCLUSIVE, IN AN ALERT LIQUID HYDROCARBON MEDIUM, WITH A TETRAVALENT TITANIUM COMPOUND HAVING AT LEAST ONE, BUT NOT MORE THAN THREE, OF THE TITANIUM VALANCES SATISFIED BY OXY GROUPS ATTACHED TO ALKYL, THE TITANNIUM VALENCES NOT THUS SATISFIED BEING SATISFIED BY HALOGEN OF THE CLASS CONSISTING OF CHLORINE AND BROMINE, WHEREBY THE ALUMINUM COMPOUND IS COMPLETELY CONSUMED BY METHATHESIS AND A MIXTURE WHICH IS CAPABLE OF POLYMERIZING ETHYLENE, IS OBTAINED.
Claim 2
Dependent Claim
117 words
A POLYMERIZATION CATALYST COMPOSITION, COMPRISING THE PRODUCT OBTAINED BY REACTING AN ALUMINUM COMPOUND OF THE CLASS CONSISTING OF LIAIR4 AND COMPOUNDS OF THE FORMULA AIRNX(3-N), X BEING HALOGEN OF THE CLASS CONSISTING OF CHLORINE AND BROMINE, R BEING ALKYL, N BEING A NUMBER FROM 1 TO 3 INCLUSIVE, IN AN ALERT LIQUID HYDROCARBON MEDIUM, WITH A TETRAVALENT TITANIUM COMPOUND HAVING AT LEAST ONE, BUT NOT MORE THAN THREE, OF THE TITANIUM VALANCES SATISFIED BY OXY GROUPS ATTACHED TO ALKYL, THE TITANNIUM VALENCES NOT THUS SATISFIED BEING SATISFIED BY HALOGEN OF THE CLASS CONSISTING OF CHLORINE AND BROMINE, WHEREBY THE ALUMINUM COMPOUND IS COMPLETELY CONSUMED BY METHATHESIS AND A MIXTURE WHICH IS CAPABLE OF POLYMERIZING ETHYLENE, IS OBTAINED.
References Cited (Backward Citations)
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Cited
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Cited
US2721189A
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Cited
US2824145A
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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) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |