Patent US2955099A successfully refreshed from Google Patents.
US2955099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscosity stabilized melt extrudable perfluorocarbon polymers
Assignee: EIDP Inc
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Filing: 1957-03-29
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Granted: 1960-10-04
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Expires: 1977-03-29
Abstract
No abstract record available.
Inventors
- 👤 Mallouk Robert Salim
- 👤 Sandt Bernd Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:56
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/20; C08F; C08F214/00; C08F214/18; C08F214/26; C08F214/28; C08F6/00; C08F6/24; C08K; C08K3/00; C08K3/10; C08K3/105; C08L27/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A RESINOUS MELT EXTRUDABLE HEXAFLUOROPROPYLENE/ TETRAFLUOROETHYLENE INTERPOLYMER COMPOSITION HAVING A SPECIFIC I.R. RATIO IN THE RANGE OF 1.5 TO 6, AS MEASURED ON FILM ABOUT 2 MILS THICK WATER-QUENCHED FROM THE MOLTEN COMPOSITION BY NET ABSORBANCE AT 10.18 MICRONS WAVE LENGTH DIVIDED BY NET ABSORBANCE AT 4.2K MICRONS WAVE LENGTH, AND INITIAL SPECIFIC MELT VISCOSITY OF NOT MORE THAN 3X10**5 POISES, AND A FACTOR OF VISCOSITY CHANGE, AS BETWEEN SAID INITIAL SPECIFIC MELT VISCOSITY AND SPECIFIC MELT VISCOSITY AFTER HEATING SAID COMPOSITION IN AIR FOR 3 HOURS AT 380*C., IN THE RANGE OF 0.06 TO 14, SAID SPECIFIC METL VISCOSITIES BEING AS MEASURED AT 380*C. UNDER A SHEAR STRESS OF 6.5 POUNDS PER SQUARE INCH, AND, INCORPORATED THEREIN CATIONIC METAL COMPOUND IN VISCOSITY STABILIZING AMOUNT IN THE RANGE OF 1X10-**7 TO 2X10-**4 GRAM EQUIVALENTS, BASED ON CATIONIC METAL, PER GRAM OF SAID COMPOSITION, SAID CATIONIC METAL COMPOUND BEING STABLE AGAINST THERMAL DECOMPOSITION AT TEMPERATURES UP TO 400*C.
Claim 2
Dependent Claim
157 words
A RESINOUS MELT EXTRUDABLE HEXAFLUOROPROPYLENE/ TETRAFLUOROETHYLENE INTERPOLYMER COMPOSITION HAVING A SPECIFIC I.R. RATIO IN THE RANGE OF 1.5 TO 6, AS MEASURED ON FILM ABOUT 2 MILS THICK WATER-QUENCHED FROM THE MOLTEN COMPOSITION BY NET ABSORBANCE AT 10.18 MICRONS WAVE LENGTH DIVIDED BY NET ABSORBANCE AT 4.2K MICRONS WAVE LENGTH, AND INITIAL SPECIFIC MELT VISCOSITY OF NOT MORE THAN 3X10**5 POISES, AND A FACTOR OF VISCOSITY CHANGE, AS BETWEEN SAID INITIAL SPECIFIC MELT VISCOSITY AND SPECIFIC MELT VISCOSITY AFTER HEATING SAID COMPOSITION IN AIR FOR 3 HOURS AT 380*C., IN THE RANGE OF 0.06 TO 14, SAID SPECIFIC METL VISCOSITIES BEING AS MEASURED AT 380*C. UNDER A SHEAR STRESS OF 6.5 POUNDS PER SQUARE INCH, AND, INCORPORATED THEREIN CATIONIC METAL COMPOUND IN VISCOSITY STABILIZING AMOUNT IN THE RANGE OF 1X10-**7 TO 2X10-**4 GRAM EQUIVALENTS, BASED ON CATIONIC METAL, PER GRAM OF SAID COMPOSITION, SAID CATIONIC METAL COMPOUND BEING STABLE AGAINST THERMAL DECOMPOSITION AT TEMPERATURES UP TO 400*C.
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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) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |