Patent US3145196A successfully refreshed from Google Patents.
US3145196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and catalyst for the polymerization of olefins
Assignee: Shell USA Inc
•
Filing: 1959-09-17
•
Granted: 1964-08-18
•
Expires: 1979-09-17
Abstract
No abstract record available.
Inventors
- 👤 Willem F Engel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:24
CPC Classifications
C; C08; C08F; C08F10/00; B; B01; B01J; B01J21/00; B01J21/16; B01J23/00; B01J23/02; B01J23/04; B01J23/16; B01J23/24; B01J23/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A PROCESS FOR THE POLYMERIZATION OF HYDROCARBON OLEFINS HAVING FROM 2 TO 8 CARBON ATOMS WHICH COMPRISES CONTACTING THE OLEFINS WITH A CATALYST PREPARED BY TREATING A CARRIER CONSISTING ESSENTIALLY OF ALUMINA AND SILICA IN WEIGHT RATIO IN THE RANGE OF FROM 15:85 TO 40:60 WITH AN ALKALI SELECTED FROM THE GROUP CONSISTING OF AN ALKALI METAL HYDROXIDE AND ALKALINE EARTH METAL HYDROXIDE, SAID ALKALI BEING UTILIZED IN A QUANTITY OF FROM 1/5 TO 5 TIMES THE QUANTITY REQUIRED TO INCREASE THE PH OF THE CARRIER TO 7.0 MEASURED WITH THE CARRIER AT A CONCENTRATION OF 1 GRAM OF SAID CARRIER FOR 75 MILLILITERS OF WATER, HEATING THE COMBINED ALKALI AND CARRIER TO A TEMPERATURE IN THE RANGE OF 200*C. TO 800*C., AND THEREAFTER ADDING A CATALYTICALLY ACTIVE COMPONENT SELECTED FROM THE CLASS CONSISTING OF OXIDE OF CHROMIUM, OXIDE OF VANADIUM AND OXIDE OF MOLYBDENUM TO SAID CARRIER, THE METALS OF THE RESPECTIVE OXIDES BEING AT LEAST PARTIALLY PRESENT IN A VALENCY LOWER THAN THEIR RESPECTIVE HIGHEST VALENCES.
Claim 2
Dependent Claim
168 words
A PROCESS FOR THE POLYMERIZATION OF HYDROCARBON OLEFINS HAVING FROM 2 TO 8 CARBON ATOMS WHICH COMPRISES CONTACTING THE OLEFINS WITH A CATALYST PREPARED BY TREATING A CARRIER CONSISTING ESSENTIALLY OF ALUMINA AND SILICA IN WEIGHT RATIO IN THE RANGE OF FROM 15:85 TO 40:60 WITH AN ALKALI SELECTED FROM THE GROUP CONSISTING OF AN ALKALI METAL HYDROXIDE AND ALKALINE EARTH METAL HYDROXIDE, SAID ALKALI BEING UTILIZED IN A QUANTITY OF FROM 1/5 TO 5 TIMES THE QUANTITY REQUIRED TO INCREASE THE PH OF THE CARRIER TO 7.0 MEASURED WITH THE CARRIER AT A CONCENTRATION OF 1 GRAM OF SAID CARRIER FOR 75 MILLILITERS OF WATER, HEATING THE COMBINED ALKALI AND CARRIER TO A TEMPERATURE IN THE RANGE OF 200*C. TO 800*C., AND THEREAFTER ADDING A CATALYTICALLY ACTIVE COMPONENT SELECTED FROM THE CLASS CONSISTING OF OXIDE OF CHROMIUM, OXIDE OF VANADIUM AND OXIDE OF MOLYBDENUM TO SAID CARRIER, THE METALS OF THE RESPECTIVE OXIDES BEING AT LEAST PARTIALLY PRESENT IN A VALENCY LOWER THAN THEIR RESPECTIVE HIGHEST VALENCES.
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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |