US2999109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of cyclopentadienylsodium
Assignee: Millennium Petrochemicals Inc
•
Filing: 1958-03-05
•
Granted: 1961-09-05
•
Expires: 1978-03-05
Abstract
No abstract record available.
Inventors
- 👤 John F Nobis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:15
CPC Classifications
C; C07; C07F; C07F1/00; C07F1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A PROCESS FOR PREPARATION OF COMPOUNDS FROM THE GROUP CONSISTING OF CYCLOPENTADIENYL SODIUM AND METHYLCYCLOPENTADIENYL SODIUM WHICH COMPRISES REACTING A DIENE FROM THE GROUP CONSISTING OF CYCLOPENTADIENE AND METHYLCYCLOPENTADIENE, AT FROM ABOUT 0 TO ABOUT 100*C. AND IN PRESENCE OF AN INERT ORGANIC LIQUID FROM THE GROUP CONSISTING OF OXYGEN-CONTAINING ALIPHATIC HYDROCARBON ETHERS AND HYDROCARBONS AND MIXTURES THEREOF, WITH A DISPERSION OF FINELY DIVIDED SODIUM IN WHICH MORE THAN ABOUT 90% OF THE DISPERSED SODIUM PARTICLES ARE SUBSTANTIALLY LESS THAN ABOUT FIVE MICRONS IN SIZE AND THE AVERAGE PARTICLE SIZE OF THE SODIUM PARTICLES IS LESS THAN THREE MICRONS IN SIZE, SAID REACTION BEING CARRIED OUT IN A REACTION MIXTURE CONSISTING ESSENTIALLY OF SAID SODIUM, INERT ORGANIC LIQUID AND DIENE.
Claim 2
Dependent Claim
120 words
A PROCESS FOR PREPARATION OF COMPOUNDS FROM THE GROUP CONSISTING OF CYCLOPENTADIENYL SODIUM AND METHYLCYCLOPENTADIENYL SODIUM WHICH COMPRISES REACTING A DIENE FROM THE GROUP CONSISTING OF CYCLOPENTADIENE AND METHYLCYCLOPENTADIENE, AT FROM ABOUT 0 TO ABOUT 100*C. AND IN PRESENCE OF AN INERT ORGANIC LIQUID FROM THE GROUP CONSISTING OF OXYGEN-CONTAINING ALIPHATIC HYDROCARBON ETHERS AND HYDROCARBONS AND MIXTURES THEREOF, WITH A DISPERSION OF FINELY DIVIDED SODIUM IN WHICH MORE THAN ABOUT 90% OF THE DISPERSED SODIUM PARTICLES ARE SUBSTANTIALLY LESS THAN ABOUT FIVE MICRONS IN SIZE AND THE AVERAGE PARTICLE SIZE OF THE SODIUM PARTICLES IS LESS THAN THREE MICRONS IN SIZE, SAID REACTION BEING CARRIED OUT IN A REACTION MIXTURE CONSISTING ESSENTIALLY OF SAID SODIUM, INERT ORGANIC LIQUID AND DIENE.
References Cited (Backward Citations)
US2716662A
Cited
US2781397A
Cited
US2781395A
Cited
US2816935A
Cited
US2816919A
Cited
US2816936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |