US2694701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of perhalogenated polymers under controlled conditions
Assignee: MW Kellogg Co
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Filing: 1950-04-21
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Granted: 1954-11-16
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Expires: 1970-04-21
Abstract
No abstract record available.
Inventors
- 👤 Oscar A Blum
- 👤 Albert L Dittman
- 👤 John M Wrightson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:42
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/18; C08F14/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR THE PRODUCTION OF A NORMALLY LIQUID POLYMER OF TRIFLUOROCHLOROETHYLENE WHICH COMPRISES POLYMERIZING TRIFLUOROCHLOROETHYLENE AT A TEMPERATURE BETWEEN ABOUT 70* C. AND ABOUT 200* C. FOR TIME BETWEEN ABOUT 1 MINUTE AND ABOUT 10 HOURS IN THE PRESENCE OF BENZOYL PEROXIDE AS A PROMOTER AND CHLOROFORM AS A CHAIN TRANSFER SOLVENT, THE WEIGHT RATIO OF PROMOTER TO MONOMER BEING BETWEEN ABOUT 1:15 AND ABOUT 1:50 AND THE WEIGHT RATIO OF CHAIN TRANSFER SOLVENT, BETWEEN ABOUT 10:1 AND ABOUT 1:5 AND MAINTAINING THE CONCENTRATION OF PROMOTER
Claim 2
Dependent Claim
87 words
A PROCESS FOR THE PRODUCTION OF A NORMALLY LIQUID POLYMER OF TRIFLUOROCHLOROETHYLENE WHICH COMPRISES POLYMERIZING TRIFLUOROCHLOROETHYLENE AT A TEMPERATURE BETWEEN ABOUT 70* C. AND ABOUT 200* C. FOR TIME BETWEEN ABOUT 1 MINUTE AND ABOUT 10 HOURS IN THE PRESENCE OF BENZOYL PEROXIDE AS A PROMOTER AND CHLOROFORM AS A CHAIN TRANSFER SOLVENT, THE WEIGHT RATIO OF PROMOTER TO MONOMER BEING BETWEEN ABOUT 1:15 AND ABOUT 1:50 AND THE WEIGHT RATIO OF CHAIN TRANSFER SOLVENT, BETWEEN ABOUT 10:1 AND ABOUT 1:5 AND MAINTAINING THE CONCENTRATION OF PROMOTER
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) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |