US3239498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silica-containing catalysts
Assignee: Phillips Petroleum Co
•
Filing: 1961-07-20
•
Granted: 1966-03-08
•
Expires: 1981-07-20
Abstract
No abstract record available.
Inventors
- 👤 Donald R Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:14
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/16; B01J23/24; B01J23/26; C; C08; C08F; C08F10/00; B01J37/00; B01J37/02; B01J37/0201; Y; Y10; Y10S; Y10S526/00; Y10S526/907
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
159 words
A PROCESS FOR PREPARING A CATALYST COMPRISING A MAJOR PROPORTION OF SILICA AND A MINOR PROPORTION OF AN OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF CR, MO, V, NI, AND CO AND MIXTURES THEREOF, WHICH COMPRISES BALL MILLING PARTICULATE POROUS SILICA IN ADMIXTURE WITH A QUANTITY IN EXCESS OF THAT REQUIRED TO COMPLETELY WET THE SILICA OF A LIQUID SELECTED FROM THE GROUP CONSISTING OF WATER AND A C1 TO C8 ALCOHOL FOR AT LEAST ONE HOUR AND UNTIL THE SILICA PARTICLES ARE OF AN AVERAGE SIZE OF LESS THAN 25 MIRCRONS; SEPARATING SAID LIQUID FROM THE SILICA; IMPREGNATING THE RESULTING SILICA PARTICLES WITH A SOLUTION OF A COMPOUND OF THE SELECTED METAL CONVERTIBLE TO THE OXIDE BY A CALCINATION; AND CALCINING THE RESULTING COMPOSITE AT A TEMPERATURE IN THE RANGE OF ABOUT 750 TO 1500*F. FOR A PERIOD OF AT LEAST SEVERAL HOURS TO CONVERT THE METAL COMPOUND TO THE OXIDE AND ACTIVATE SAID CATALYST.
Claim 2
Dependent Claim
159 words
A PROCESS FOR PREPARING A CATALYST COMPRISING A MAJOR PROPORTION OF SILICA AND A MINOR PROPORTION OF AN OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF CR, MO, V, NI, AND CO AND MIXTURES THEREOF, WHICH COMPRISES BALL MILLING PARTICULATE POROUS SILICA IN ADMIXTURE WITH A QUANTITY IN EXCESS OF THAT REQUIRED TO COMPLETELY WET THE SILICA OF A LIQUID SELECTED FROM THE GROUP CONSISTING OF WATER AND A C1 TO C8 ALCOHOL FOR AT LEAST ONE HOUR AND UNTIL THE SILICA PARTICLES ARE OF AN AVERAGE SIZE OF LESS THAN 25 MIRCRONS; SEPARATING SAID LIQUID FROM THE SILICA; IMPREGNATING THE RESULTING SILICA PARTICLES WITH A SOLUTION OF A COMPOUND OF THE SELECTED METAL CONVERTIBLE TO THE OXIDE BY A CALCINATION; AND CALCINING THE RESULTING COMPOSITE AT A TEMPERATURE IN THE RANGE OF ABOUT 750 TO 1500*F. FOR A PERIOD OF AT LEAST SEVERAL HOURS TO CONVERT THE METAL COMPOUND TO THE OXIDE AND ACTIVATE SAID CATALYST.
Claim 3
Dependent Claim
25 words
A PROCESS FOR POLYMERIZING A POLYMERIZABLE OLEFIN WHICH COMPRISES CONTACTING SAID OLEFIN UNDER POLYMERIZING CONDITIONS WITH A CATALYST PREPARED BY THE PROCES OF CLAIM 1.
References Cited (Backward Citations)
US2504001A
Cited
US2865868A
Cited
US2969348A
Cited
US2910444A
Cited
US3006909A
Cited
US2980659A
Cited
US2986557A
Cited
US2984653A
Cited
US3132125A
Cited
US3130188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |