US2951045A
Expired / Lapsed
US
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Preparation of titanium chloride polymerization catalyst
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-05-10
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Granted: 1960-08-30
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Expires: 1977-05-10
Abstract
No abstract record available.
Inventors
- 👤 Gamble Leon Walter
- 👤 Jr Arthur Walter Langer
- 👤 Neal Arthur Homer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:47
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR MAKING A POLYMERIZATION CATALYST WHICH COMPRISES MIXING AN ALUMINUM TRIALKYL OF 2 TO 4 CARBON ATOMS PER ALKYL GROUP AND TITANIUM TETRACHLORIDE IN SUBSTANTIALLY STOICHIOMETRIC PROPORTION WHILE IN A HYDROCARBON SOLUTION IN A TOTAL CONCENTRATION OF ABOUT 1.0 TO 16% AT A TEMPERATURE NOT ABOVE 40*C., MAINTAINING THE MIXTURE IN THE AFORESAID TEMPERATURE RANGE FOR ABOUT 2 TO 60 MINUTES UNTIL ABOUT 20 TO 40% OF THE ORIGINAL SOLUBLE TITANIUM IS PRECIPITATED FROM THE SOLUTION, AND THEN HEATING THE MIXTURE TO A FINAL TEMPERATURE OF ABOUT 110* TO 175*C. TO PRODUCE A VIOLET CATALYSTIC PRECIPITATE,
Claim 2
Dependent Claim
98 words
A PROCESS FOR MAKING A POLYMERIZATION CATALYST WHICH COMPRISES MIXING AN ALUMINUM TRIALKYL OF 2 TO 4 CARBON ATOMS PER ALKYL GROUP AND TITANIUM TETRACHLORIDE IN SUBSTANTIALLY STOICHIOMETRIC PROPORTION WHILE IN A HYDROCARBON SOLUTION IN A TOTAL CONCENTRATION OF ABOUT 1.0 TO 16% AT A TEMPERATURE NOT ABOVE 40*C., MAINTAINING THE MIXTURE IN THE AFORESAID TEMPERATURE RANGE FOR ABOUT 2 TO 60 MINUTES UNTIL ABOUT 20 TO 40% OF THE ORIGINAL SOLUBLE TITANIUM IS PRECIPITATED FROM THE SOLUTION, AND THEN HEATING THE MIXTURE TO A FINAL TEMPERATURE OF ABOUT 110* TO 175*C. TO PRODUCE A VIOLET CATALYSTIC PRECIPITATE,
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) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |