US2613202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for polymerizing chlorotrifluoroethylene
Assignee: General Electric Co
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Filing: 1950-06-28
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Granted: 1952-10-07
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Expires: 1970-06-28
Abstract
No abstract record available.
Inventors
- 👤 George F Roedel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:32
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/18; C08F14/24; Y; Y10; Y10S; Y10S526/00; Y10S526/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE PROCESS FOR OBTAINING POLYMERIC CHLOROTRIFLUOROETHYLENE HAVING A SOFTENING POINT ABOVE 220* C., WHICH PROCESS COMPRISES (1) FORMING A SUSPENSION OF INGREDIENTS COMPRISING (A) CHLOROTRIFLUOROETHYLENE, (B) WATER, THE RATIO OF WATER TO MONOMER ON A WEIGHT BASIS BEING ABOVE 1 TO 1, (C) AN ORGANIC PEROXIDE POLYMERIZATION CATALYST FOR (A), (D) A HEAVY METAL COMPOUND WHOSE METAL ION IS CAPABLE OF EXISTING IN AT LEAST TWO VALENCE STATES AND WHICH COMPOUND IS SOLUBLE IN THE CHLOROTRIFLUOROETHYLENE, AND (E) A WATER-SOLUBLE REDUCING AGENT FOR THE HEAVY METAL ION, AND (2) EFFECTING REACTION UNDER AUTOGENOUS PRESSURE BETWEEN THE INGREDIENTS AT A PH OF FROM ABOUT 2.3 TO 4.0 AT A TEMPERATURE BELOW 35* C. FOR A TIME SUFFICIENT TO EFFECT POLYMERIZATION OF THE MONOMER TO POLYMERIC CHLOROTRIFLUORETHYLENE.
Claim 2
Dependent Claim
125 words
THE PROCESS FOR OBTAINING POLYMERIC CHLOROTRIFLUOROETHYLENE HAVING A SOFTENING POINT ABOVE 220* C., WHICH PROCESS COMPRISES (1) FORMING A SUSPENSION OF INGREDIENTS COMPRISING (A) CHLOROTRIFLUOROETHYLENE, (B) WATER, THE RATIO OF WATER TO MONOMER ON A WEIGHT BASIS BEING ABOVE 1 TO 1, (C) AN ORGANIC PEROXIDE POLYMERIZATION CATALYST FOR (A), (D) A HEAVY METAL COMPOUND WHOSE METAL ION IS CAPABLE OF EXISTING IN AT LEAST TWO VALENCE STATES AND WHICH COMPOUND IS SOLUBLE IN THE CHLOROTRIFLUOROETHYLENE, AND (E) A WATER-SOLUBLE REDUCING AGENT FOR THE HEAVY METAL ION, AND (2) EFFECTING REACTION UNDER AUTOGENOUS PRESSURE BETWEEN THE INGREDIENTS AT A PH OF FROM ABOUT 2.3 TO 4.0 AT A TEMPERATURE BELOW 35* C. FOR A TIME SUFFICIENT TO EFFECT POLYMERIZATION OF THE MONOMER TO POLYMERIC CHLOROTRIFLUORETHYLENE.
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) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |