US3165504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst and process for producing olefin polymers
Assignee: Phillips Petroleum Co
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Filing: 1961-02-27
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Granted: 1965-01-12
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Expires: 1981-02-27
Abstract
No abstract record available.
Inventors
- 👤 John P Hogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:18
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A POLYMERIZATION PROCESS WHICH COMPRISES POLYMERIZING MONOMERS SELECTED FROM THE GROUP CONSISTING OF ETHYLENE AND MIXTURES OF ETHYLENE WITH HIGHER MOLECULAR WEIGHT 1-OLEFINS HAVING FROM 3 TO 12 CARBON ATOMS PER MOLECULE AT A TEMPERATURE IN THE RANGE 100-500*F. IN THE PRESENCE OF CATALYST COMPRISING CHROMIUM OXIDE SUPPORTED ON AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF SILICA, ALUMINA, ZIRCONIA AND THORIA, WHEREIN AT LEAST PART OF THE CHROMIUM IS HEXAVALENT, SAID CATALYST HAVING BEEN IMPROVED IN ACTIVITY BY INCORPORATING A METAL FLUORIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM, IRON, COBALT, SILVER, STRONTIUM, CALCIUM, ZINC, TIN AND BISMUTH THEREIN AND THEN HEATING AT A TEMPERATURE RANGING FROM 450-1500*F. FOR A PERIOD OF TIME RANGING FROM 5 MINUTES TO 20 HOURS SUFFICIENT TO INCREASE THE ACTIVITY OF SAID CATALYST IN POLYMERIZING SAID OLEFIN.
Claim 2
Dependent Claim
137 words
A POLYMERIZATION PROCESS WHICH COMPRISES POLYMERIZING MONOMERS SELECTED FROM THE GROUP CONSISTING OF ETHYLENE AND MIXTURES OF ETHYLENE WITH HIGHER MOLECULAR WEIGHT 1-OLEFINS HAVING FROM 3 TO 12 CARBON ATOMS PER MOLECULE AT A TEMPERATURE IN THE RANGE 100-500*F. IN THE PRESENCE OF CATALYST COMPRISING CHROMIUM OXIDE SUPPORTED ON AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF SILICA, ALUMINA, ZIRCONIA AND THORIA, WHEREIN AT LEAST PART OF THE CHROMIUM IS HEXAVALENT, SAID CATALYST HAVING BEEN IMPROVED IN ACTIVITY BY INCORPORATING A METAL FLUORIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM, IRON, COBALT, SILVER, STRONTIUM, CALCIUM, ZINC, TIN AND BISMUTH THEREIN AND THEN HEATING AT A TEMPERATURE RANGING FROM 450-1500*F. FOR A PERIOD OF TIME RANGING FROM 5 MINUTES TO 20 HOURS SUFFICIENT TO INCREASE THE ACTIVITY OF SAID CATALYST IN POLYMERIZING SAID OLEFIN.
References Cited (Backward Citations)
US2825721A
Cited
US2878241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-12 | 1968-07-13 | 1969-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-12 | 1972-07-13 | 1973-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-12 | 1976-07-13 | 1977-01-12 | $7700.00 | Window Closed / Lapsed |