US4003941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing polyhalocarbons oxides
Assignee: 3M Co
•
Filing: 1973-05-16
•
Granted: 1977-01-18
•
Expires: 1993-05-16
Abstract
Abstract A process for the production of polyhalocarbon oxides not requiring the use of light is disclosed. This process involves introducing into a reaction zone perhaloolefin and ozone. The polymers obtained are substantially free of oxidizing linkages. The polyhalocarbon oxides and hydrolyzed products obtained therefrom are useful as intermediates for stabilized materials useful, for instance, as heat transfer media and lubricants, and for cured materials useful, for instance, in sealant systems and adhesive systems.
Inventors
- 👤 George H. Crawford
- 👤 Nicholas Kowanko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:53
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/002; C08G65/005; C08G65/007
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
60 words
A process for producing polyhalocarbon oxides comprising introducing into a reaction zone as the only essential reactive components ozone and an acyclic perhaloolefin having 3 to 6 carbon atoms, while maintaining said perhaloolefin under liquid phase conditions for a period of time sufficient to directly produce, in the absence of ultraviolet light, polyhalocarbon oxide polymer substantially free of oxidizing linkages.
Claim 2
Dependent Claim
60 words
A process for producing polyhalocarbon oxides comprising introducing into a reaction zone as the only essential reactive components ozone and an acyclic perhaloolefin having 3 to 6 carbon atoms, while maintaining said perhaloolefin under liquid phase conditions for a period of time sufficient to directly produce, in the absence of ultraviolet light, polyhalocarbon oxide polymer substantially free of oxidizing linkages.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein atmospheric pressures and temperatures ranging from about -30° to -160° C. are employed.
Claim 4
Dependent Claim
10 words
The process of claim 1 wherein said perhaloolefin is perfluorinated.
Claim 5
Dependent Claim
23 words
The process of claim 1 wherein said ozone is dissolved in a liquid selected from the group consisting of perhaloolefin and inert solvents.
Claim 6
Dependent Claim
56 words
A process for producing polyfluorocarbon oxides comprising introducing into a reaction zone as the sole essential reactive components liquid perfluoropropene and ozone and reacting said components at about -30° C. to -100° C. for a period of time sufficient to directly produce, in the absence of ultraviolet light, polyfluorocarbon oxide polymers substantially free of oxidizing linkages.
Claim 7
Dependent Claim
56 words
A process for producing polyfluorocarbon oxides comprising introducing into a reaction zone as the sole essential reactive components liquid perfluoropropene and ozone and reacting said components at about -30° C. to -100° C. for a period of time sufficient to directly produce, in the absence of ultraviolet light, polyfluorocarbon oxide polymers substantially free of oxidizing linkages.
Claim 8
Dependent Claim
16 words
A process of claim 1 wherein said perfluoropropene is maintained under reflux conditions at atmospheric pressure.
Claim 9
Dependent Claim
12 words
The process of claim 6, further comprising hydrolyzing said polyfluorocarbon oxide polymer.
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) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |