US3371076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of copolymerization of ethylene and alpha-olefines with fluorinated unsaturated monomers
Assignee: Montedison SpA
•
Filing: 1962-03-09
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Granted: 1968-02-27
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Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
- 👤 Ragazzini Mario
- 👤 Carcano Donato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:13
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/18; C08F214/186; C08F10/00; C08F210/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A PROCESS FOR THE COPOLYMERIZATION OF ETHYLENE AND CHLOROTRIFLUOROETHYLENE BY CONTACTING SAID MONOMERS, AT A MAXIMUM PRESSURE OF 40 ATM. AND A TEMPERATURE FROM -100* TO +50*C. AND IN AN INERT ATMOSPHERE IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF COMPLEXES OF BORON TRIALKYLS, BORON HYDRIDES, AND BORON ALKYL HYDRIDES WITH SUBSTANCES HAVING ELECTRON DONATOR CHARACTER, THE MOLAR RATIO BETWEEN THE ETHYLENE AND CHLOROTRIFLUOROETHYLENE BEING BETWEEN 1 AND 2, WHEREIN THE CATALYST IS ACTIVALED BY A SUBSTANCE YIELDING OXYGEN AND SELECTED FROM THE GROUP CONSISTING OF OXYGEN ITSELF, PEROXIDES AND OXYGENATED SUBSTANCES CAPABLE OF EVOLVING OXYGEN, THE IMPROVEMENT WHICH CONSISTS IN USING AS THE ELECTRON D ELECTRON DONATOR SUBSTANCE A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ETHERS.
Claim 2
Dependent Claim
123 words
IN A PROCESS FOR THE COPOLYMERIZATION OF ETHYLENE AND CHLOROTRIFLUOROETHYLENE BY CONTACTING SAID MONOMERS, AT A MAXIMUM PRESSURE OF 40 ATM. AND A TEMPERATURE FROM -100* TO +50*C. AND IN AN INERT ATMOSPHERE IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF COMPLEXES OF BORON TRIALKYLS, BORON HYDRIDES, AND BORON ALKYL HYDRIDES WITH SUBSTANCES HAVING ELECTRON DONATOR CHARACTER, THE MOLAR RATIO BETWEEN THE ETHYLENE AND CHLOROTRIFLUOROETHYLENE BEING BETWEEN 1 AND 2, WHEREIN THE CATALYST IS ACTIVALED BY A SUBSTANCE YIELDING OXYGEN AND SELECTED FROM THE GROUP CONSISTING OF OXYGEN ITSELF, PEROXIDES AND OXYGENATED SUBSTANCES CAPABLE OF EVOLVING OXYGEN, THE IMPROVEMENT WHICH CONSISTS IN USING AS THE ELECTRON D ELECTRON DONATOR SUBSTANCE A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ETHERS.
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) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |