US2581228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sio2-al2o3-nio catalyst and its preparation
Assignee: Phillips Petroleum Co
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Filing: 1946-12-23
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Granted: 1952-01-01
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Expires: 1966-12-23
Abstract
No abstract record available.
Inventors
- 👤 Grant C Bailey
- 👤 James A Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:45
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A PROCESS OF PREPARING A CATALYST FOR USE IN THE POLYMERIZATION OF OLEFINS WHICH COMPRISES IMPREGNATING SILICA GEL WITH AN AQUEOUS SOLTUION OF NICKEL NITRATE AND ALUMINUM NITRATE SO AS TO INCORPORATE IN THE CATALYST AN AMOUNT OF NICKEL IN THE RANGE OF 0.1 TO 5 WEIGHT PER CENT AND AN AMOUNT OF ALUMINA IN THE RANGE OF 1 TO 10 WEIGHT PER CENT, BOTH BASED UPON THE WEIGHT OF THE SILICA, DRYING, DECOMPOSING THE NICKEL NITRATE TO NICKEL OXIDE AND THE ALUMINUM NITRATE TO ALUMINA BY HEATING UNDER CONDITIONS SUCH THAT SUBSTANTIALLY ALL COMBINED NITROGEN OXIDES ARE REMOVED AND AS THE FINAL STEP IN THE PROCESS ACTIVATING THE RESULTING NICKEL OXIDE BY HEATING IN AN OXYGENCONTAINING ATMOSPHERE AT A TEMPERATURE OF BE-
Claim 2
Dependent Claim
123 words
A PROCESS OF PREPARING A CATALYST FOR USE IN THE POLYMERIZATION OF OLEFINS WHICH COMPRISES IMPREGNATING SILICA GEL WITH AN AQUEOUS SOLTUION OF NICKEL NITRATE AND ALUMINUM NITRATE SO AS TO INCORPORATE IN THE CATALYST AN AMOUNT OF NICKEL IN THE RANGE OF 0.1 TO 5 WEIGHT PER CENT AND AN AMOUNT OF ALUMINA IN THE RANGE OF 1 TO 10 WEIGHT PER CENT, BOTH BASED UPON THE WEIGHT OF THE SILICA, DRYING, DECOMPOSING THE NICKEL NITRATE TO NICKEL OXIDE AND THE ALUMINUM NITRATE TO ALUMINA BY HEATING UNDER CONDITIONS SUCH THAT SUBSTANTIALLY ALL COMBINED NITROGEN OXIDES ARE REMOVED AND AS THE FINAL STEP IN THE PROCESS ACTIVATING THE RESULTING NICKEL OXIDE BY HEATING IN AN OXYGENCONTAINING ATMOSPHERE AT A TEMPERATURE OF BE-
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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) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |