US3285989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isoprene sodium treatment process
Assignee: Goodrich Gulf Chemicals Inc
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Filing: 1964-12-28
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Granted: 1966-11-15
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Expires: 1984-12-28
Abstract
No abstract record available.
Inventors
- 👤 Wolfe John Samuel Brooks
- 👤 Kahn Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:04
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/14833; C07C7/14841
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN A PROCESS FOR TREATING DIOLEFIN MONOMERS WITH SODIUM TO REMOVE POLYMERIZATION INHIBITORS THEREFROM, INCLUDING THE STEPS OF ADMIXING A DODIUM METAL DISPERSION OF SODIUM METAL IN AN ORGANIC DISPERSION MEDIUM WITH THE CRUDE DIOLEFIN MONOMER, RETAINING THE DISPERSION AND MONOMER IN ADMIXTURE WHILE REACTING THE SODIUM WITH THE SODIUM REACTIVE INHIBITORS, AND SEPARATING THE UNREACTED SODIUM AND SODIUM REACTION PRODUCTS FROM THE REACTION MIXTURE, THE IMPROVEMENT WHEREIN SAID DIOLEFIN MONOMER IS FLASHED FROM SAID REACTION MIXTURE IN A HEATED, MOISTURE FREE ORGANIC LIQUID BATH HAVING A BOILING POINT SUBSTANTIALLY ABOVE THE FLASHING TEMPERATURE OF SAID DIOLEFIN MONOMER AND BEING INERT AND UNREACTIVE WITH SODIUM METAL, SAID DIOLEFIN MONOMER, AND SAID SODIUM REACTION PRODUCTS.
Claim 2
Dependent Claim
114 words
IN A PROCESS FOR TREATING DIOLEFIN MONOMERS WITH SODIUM TO REMOVE POLYMERIZATION INHIBITORS THEREFROM, INCLUDING THE STEPS OF ADMIXING A DODIUM METAL DISPERSION OF SODIUM METAL IN AN ORGANIC DISPERSION MEDIUM WITH THE CRUDE DIOLEFIN MONOMER, RETAINING THE DISPERSION AND MONOMER IN ADMIXTURE WHILE REACTING THE SODIUM WITH THE SODIUM REACTIVE INHIBITORS, AND SEPARATING THE UNREACTED SODIUM AND SODIUM REACTION PRODUCTS FROM THE REACTION MIXTURE, THE IMPROVEMENT WHEREIN SAID DIOLEFIN MONOMER IS FLASHED FROM SAID REACTION MIXTURE IN A HEATED, MOISTURE FREE ORGANIC LIQUID BATH HAVING A BOILING POINT SUBSTANTIALLY ABOVE THE FLASHING TEMPERATURE OF SAID DIOLEFIN MONOMER AND BEING INERT AND UNREACTIVE WITH SODIUM METAL, SAID DIOLEFIN MONOMER, AND SAID SODIUM REACTION PRODUCTS.
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |