Patent US3313792A successfully refreshed from Google Patents.
US3313792A
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Process for polymerizing conjugated dienes with a catalyst comprising an aluminum halide, a salt of cobalt or nickel, and a compound of the formula sihxy (4-x)
Assignee: Shell USA Inc
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Filing: 1963-02-25
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Granted: 1967-04-11
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Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Edward W Duck
- 👤 Jacques A Waterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:08
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
A PROCESS COMPRISING POLYMERIZING A CONJUGATED DIENE AT A TEMPERATURE BETWEEN ABOUT -20*C. AND 150* C. IN THE PRESENCE OF A CATALYST COMPRISING THE REACTION PRODUCT OF AN ALUMINUM HALIDE OF A HALOGEN HAVING AN ATOMIC NUMBER BETWEEN 17 AND 35, A HYDROCARBON-DOLUBLE SALT OF A CARBOXYLIC ACID HAVING 8-24 CARBON ATOMS PER MOLECULE AND A METAL HAVING AN ATOMIC NUMBER OF 27-28, AND A SILICON COMPOUND THE GENERA CONFIGURATION
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) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |