Patent US3340323A successfully refreshed from Google Patents.
US3340323A
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US
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Process for the production of 4-methylpentene-1
Assignee: Glanzstoff AG
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Filing: 1966-03-16
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Granted: 1967-09-05
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Expires: 1986-03-16
Abstract
No abstract record available.
Inventors
- 👤 Magerlein Helmut
- 👤 Siggel Erhard
- 👤 Meyer Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:29
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/20; B01J27/22; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A METHOD FOR THE PRODUCTION OF 4-METHYLPENTENE-1 WHEREIN PROPYLENE IS DIMERIZED AT A TEMPERATURE OF ABOUT 100*C. TO 180*C. AND A PRESSURE OF ABOUT 1 TO 250 ATMOSPHERES IN AN INERT HYDROCARBON DILUENT AND IN CONTACT WITH A FINELY DISPERSED SOLID METALLIC LITHIUM AS A CATALYST OBTAINED BY REMETALLIZATION OF AN ORGANIC LITHIUM COMPOUND OF THE FORMULA LI-R, WHEREIN R REPRESENTS A RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL OF 2 TO 18 CARBON ATOMS, CYCLOALKYL AND ARYL, WITH ANOTHER ALKALI METAL, THE IMPROVEMENT WHICH COMPRISES: CARRYING OUT THE DEMERIZATION REACTION BY CONTACTING THE PROPYLENE WITH SAID LITHIUM CATALYST OBTAINED BY REMETALLIZATION OF SAID ORGANIC LITHIUM COMPOUND WITH SAID OTHER ALKALI METAL PRECIPITATED ONTO FINELY DIVIDED CARBON AS A CARRIER.
Claim 2
Dependent Claim
122 words
IN A METHOD FOR THE PRODUCTION OF 4-METHYLPENTENE-1 WHEREIN PROPYLENE IS DIMERIZED AT A TEMPERATURE OF ABOUT 100*C. TO 180*C. AND A PRESSURE OF ABOUT 1 TO 250 ATMOSPHERES IN AN INERT HYDROCARBON DILUENT AND IN CONTACT WITH A FINELY DISPERSED SOLID METALLIC LITHIUM AS A CATALYST OBTAINED BY REMETALLIZATION OF AN ORGANIC LITHIUM COMPOUND OF THE FORMULA LI-R, WHEREIN R REPRESENTS A RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL OF 2 TO 18 CARBON ATOMS, CYCLOALKYL AND ARYL, WITH ANOTHER ALKALI METAL, THE IMPROVEMENT WHICH COMPRISES: CARRYING OUT THE DEMERIZATION REACTION BY CONTACTING THE PROPYLENE WITH SAID LITHIUM CATALYST OBTAINED BY REMETALLIZATION OF SAID ORGANIC LITHIUM COMPOUND WITH SAID OTHER ALKALI METAL PRECIPITATED ONTO FINELY DIVIDED CARBON AS A CARRIER.
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |