US3017401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene polymerization with aluminum titanium tetrachloride catalysts
Assignee: Rhone Poulenc SA
•
Filing: 1958-03-19
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Granted: 1962-01-16
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Expires: 1978-03-19
Abstract
No abstract record available.
Inventors
- 👤 Bo Gilbert
- 👤 Fichet Edouard
- 👤 Perrot Andre
- 👤 Perras Philippe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:49
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
PROCESS FOR THE PRODUCTION OF A CATALYST FOR THE POLYMERISATION OF ETHYLENE WHICH COMPRISES HEATING TO AN ELEVATED TEMPERATURE OF AT MOST 300*C. A MIXTURE OF TITANIUM TETRACHLORIDE AND ALUMINUM IN WHICH THE MOLECULAR RATIO OF ALUMININUM TO TITANIUM TETRACHLORIDE IS FROM 3:1 TO 20:1 IN THE ABSENCE OF ETHYLENE AND OTHER HYDROCARBONS CAPABLE O POLYMERISING UNDER THE CONDITIONS EMPOLYED AND IN THE PRESENCE OF A LIQUID DILUENT COMPRISING 90% TO 99.5% BY VOLUME OF CYCLOHEXANE AND 10% TO 0.5% BY VOLUME OF BENZENE, THE HEATING BEING CONTINUED UNTIL THE CATALYST HAS A PINK TO VIOLET-PINK COLOUR.
Claim 2
Dependent Claim
97 words
PROCESS FOR THE PRODUCTION OF A CATALYST FOR THE POLYMERISATION OF ETHYLENE WHICH COMPRISES HEATING TO AN ELEVATED TEMPERATURE OF AT MOST 300*C. A MIXTURE OF TITANIUM TETRACHLORIDE AND ALUMINUM IN WHICH THE MOLECULAR RATIO OF ALUMININUM TO TITANIUM TETRACHLORIDE IS FROM 3:1 TO 20:1 IN THE ABSENCE OF ETHYLENE AND OTHER HYDROCARBONS CAPABLE O POLYMERISING UNDER THE CONDITIONS EMPOLYED AND IN THE PRESENCE OF A LIQUID DILUENT COMPRISING 90% TO 99.5% BY VOLUME OF CYCLOHEXANE AND 10% TO 0.5% BY VOLUME OF BENZENE, THE HEATING BEING CONTINUED UNTIL THE CATALYST HAS A PINK TO VIOLET-PINK COLOUR.
References Cited (Backward Citations)
FR1132506A
Cited
BE538782A
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FR1147868A
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US2827447A
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FR1149945A
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US2910461A
Cited
US2868771A
Cited
US2846427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |