US2944997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blend of chlorotrifluoroethylene homopolymer and chlorotrifluoroethylene vinylidene fluoride copolymer
Assignee: Union Carbide Corp
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Filing: 1956-10-03
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Granted: 1960-07-12
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Expires: 1976-10-03
Abstract
No abstract record available.
Inventors
- 👤 Gates Stephen
- 👤 Dennis H Mullins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:10
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A PLASTIC COMPOSITION HAVING A SECANT TENSILE MODULUS ABOVE 1000 LBS. PER SQ. IN. AT TEMPERATURES BELOW 215*C. COMPRISING A BLEND OF A SOLID RESINOUS HOMOPOLYMER OF CHLOROTRIFLUOROETHYLENE INTIMATELY ADMIXED WITH A COPOLYMER OF CHLOROTRIFLUOROETHYLENE AND VINYLIDENE FLUORIDE CONTAINING FROM 5% TO 6% BY WEIGHT OF VINYLIDENE FLUORIDE AND FROM 94% TO 95% BY WEIGHT OF CHLOROTRIFLUOROETHYLENE AND HAVING AN INTRINSIC VISCOSITY OF 0.75 TO 3.0, THE PROPORTIONS OF THE HOMOPOLYMER AND COPOLYMER IN THE BLEND BEING SUCH THAT THE VINYLIDENE FLUORIDE CONTENT OF THE BLEND IS AT LEAST 0.5% BY WEIGHT AND NOT MORE THAN 1.8% BY WEIGHT.
Claim 2
Dependent Claim
99 words
A PLASTIC COMPOSITION HAVING A SECANT TENSILE MODULUS ABOVE 1000 LBS. PER SQ. IN. AT TEMPERATURES BELOW 215*C. COMPRISING A BLEND OF A SOLID RESINOUS HOMOPOLYMER OF CHLOROTRIFLUOROETHYLENE INTIMATELY ADMIXED WITH A COPOLYMER OF CHLOROTRIFLUOROETHYLENE AND VINYLIDENE FLUORIDE CONTAINING FROM 5% TO 6% BY WEIGHT OF VINYLIDENE FLUORIDE AND FROM 94% TO 95% BY WEIGHT OF CHLOROTRIFLUOROETHYLENE AND HAVING AN INTRINSIC VISCOSITY OF 0.75 TO 3.0, THE PROPORTIONS OF THE HOMOPOLYMER AND COPOLYMER IN THE BLEND BEING SUCH THAT THE VINYLIDENE FLUORIDE CONTENT OF THE BLEND IS AT LEAST 0.5% BY WEIGHT AND NOT MORE THAN 1.8% BY WEIGHT.
References Cited (Backward Citations)
US2789959A
Cited
US2770606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |