US3806531A
Expired / Lapsed
US
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Bis-diene-(1,3)-iron monocarbonyls and a process for the production thereof
Assignee: Studiengesellschaft Kohle gGmbH
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Filing: 1972-02-04
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Granted: 1974-04-23
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Expires: 1992-02-04
Abstract
Abstract COMPOUNDS OF THE BIS - DIENE - (1,3) - IRON MONOCARBONYL TYPE ARE PREPARED IN YIELDS OF AS HIGH AS 90% AND MORE BY IRRADIATING IRON PENTACARBONYL TOGETHER WITH THE DIENE IN A SOLVENT AT TEMPERATURES WITHIN THE RANGE OF -60*C. TO +20*C. A PARTICULARLY SUITABLE RADIATION SOURCE IS A HIGH PRESSURE MERCURY LAMP. THE COMPOUNDS ARE SUITED AS CATALYSTS FOR THE OLIGOMERIZATION OF UNSATURATED HYDROCARBON COMPOUNDS.
Inventors
- 👤 Gustorf E Von
- 👤 Z Pfajfer
- 👤 F Grevels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:02
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/02; B; B01; B01J; B01J31/00; B01J31/16; B01J31/20; B01J31/22; B01J31/2282; B01J31/2291; B01J31/2295; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/842
Claims Analysis
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References Cited (Backward Citations)
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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) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |