US3398130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst and process for polymerization
Assignee: Shell USA Inc
•
Filing: 1962-09-17
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Granted: 1968-08-20
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Expires: 1982-09-17
Abstract
No abstract record available.
Inventors
- 👤 Jr John Boor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:55
CPC Classifications
C; C08; C08F; C08F110/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
107 words
IN THE POLYMERIZATION OF ALPHA-MONOOLEFINIC HYDROCARBON MATERIAL OF 3 TO 7 CARBON ATOMS PER MOLECULE TO FORM SOLID, CRYSTALLIZABLE POLYMER, THE IMPROVEMENT WHICH COMPRISES CATALYZING THE POLYMERIZATION WITH A CATALYST CONSISTING ESSENTIALLY OF AN ALUMINUM DIHALIDE HAVING THE FORMULA RAIX2 WHEREIN R IS A HYDROCARBON RADICAL CONTAINING 1 TO 12 CARBON ATOMS AND SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL, AND ARALKYL AND X IS A HALOGEN ATOM, A TRIVALENT HALIDE OF TITANIUM, AND AN ACETYLACETONATE OF A METAL FROM THE GROUP CONSISTING OF MANGANESE, CHROMIUM AND IRON, THE MOLAR RATIO OF SAID ACRETYLACETONATE TO SAID ALUMINUM DIHALIDE BEING WITHIN THE RANGE OF 0.1:1 TO 1:1.
References Cited (Backward Citations)
US2954367A
Cited
BE565191A
Cited
GB875924A
Cited
FR1231089A
Cited
US3081287A
Cited
US2996459A
Cited
US3009907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |