US3732328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of octadienes
Assignee: Imperial Chemical Industries Ltd
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Filing: 1970-10-08
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Granted: 1973-05-08
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Expires: 1990-10-08
Abstract
Abstract A PROCESS FOR THE PRODUCTION OF AN OCTADIENE SELECTED FROM THE GROUP CONSISTING OF OCTA-1,6-DIENE, OCTA-1,7DIENE, MONOMETHYLOCTA-1,6-DIENE, MONOMETHYLOCTA-1,7DIENE, DIMETHYLOCTA-1,6-DIENE AND DIMETHYLOCTA-1,7-DIENE WHICH COMPRISES CONTACTING BUTADIENE AND/OR ISOPRENE AT A TEMPERATURE OF 20 TO 200*C, WITH A 10-1 TO 10-5 MOLAR CONCENTRATION OF A PLATINUM, PALLADIUM, OR RUTHENIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF HALIDES, ALKANOATES CONTAINING UP TO 6 CARBON ATOMS, ACETYLACETONATES, BISBENZONITRILE PALLADIUM (II) AND LITHIUM PALLADOUS CHLORIDE, IN A POLAR SOLVENT AND IN THE PRESENCE OF FORMIC ACID.
Inventors
- 👤 D Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:32
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/74; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44; C07C2523/46; C07C2527/00; C07C2527/06; C07C2527/128; C07C2527/13; C07C2531/00; C07C2531/02; C07C2531/04; C07C2531/16; C07C2531/22
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |