US3334157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethylene blends containing trace amounts of polytetrafluoroethylene
Assignee: Union Carbide Canada Ltd
•
Filing: 1963-12-03
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Granted: 1967-08-01
•
Expires: 1983-12-03
Abstract
No abstract record available.
Inventors
- 👤 Hans R Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:03
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L2205/00; C08L2205/02; C08L2205/03; C08L27/00; C08L27/02; C08L27/12; C08L27/18; Y; Y10; Y10S; Y10S525/00; Y10S525/932
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS FOR PRODUCING POLYETHYLENE COMPOSITION SUITABLE FOR PRODUCING FILMS HAVING IMPROVED OPTICAL PROPERTIES WHICH COMPRISES BLENDING POLYETHYLENE HAVING A MELT INDEX OF FROM ABOUT 0.01 DECIGRAM/MINUTE TO ABOUT 30 DECIGRAMS/MINUTE, AND A DENSITY OF FROM ABOUT 0.910 GRAM/CC. TO ABOUT 0.965 GRAM/CC., WITH POLY(TETRAFLUOROETHYLENE) HAVING A PARTICLE SIZE SMALLER THAN 1000 MILLIMICRONS, AT A TEMPERATURE ABOVE THE MELTING POINT OF THE POLYETHYLENE BUT BELOW THE MELTING POINT OF THE POLY(TERAFLUOROETHYLENE), WHEREIN THE POLY(TETRAFLUOROETHYLENE) IS BLENDED INTO THE POLYETHYLENE AS AN AQUEOUS DISPERSION SO AS TO FORM A COMPOSITION CONTAINING FROM 0.015 PERCENT BY WEIGHT TO ABOUT 1.7 PERCENTY BY WEIGHT OF POLY(TETRAFLUOROETHYLENE).
Claim 2
Dependent Claim
103 words
A PROCESS FOR PRODUCING POLYETHYLENE COMPOSITION SUITABLE FOR PRODUCING FILMS HAVING IMPROVED OPTICAL PROPERTIES WHICH COMPRISES BLENDING POLYETHYLENE HAVING A MELT INDEX OF FROM ABOUT 0.01 DECIGRAM/MINUTE TO ABOUT 30 DECIGRAMS/MINUTE, AND A DENSITY OF FROM ABOUT 0.910 GRAM/CC. TO ABOUT 0.965 GRAM/CC., WITH POLY(TETRAFLUOROETHYLENE) HAVING A PARTICLE SIZE SMALLER THAN 1000 MILLIMICRONS, AT A TEMPERATURE ABOVE THE MELTING POINT OF THE POLYETHYLENE BUT BELOW THE MELTING POINT OF THE POLY(TERAFLUOROETHYLENE), WHEREIN THE POLY(TETRAFLUOROETHYLENE) IS BLENDED INTO THE POLYETHYLENE AS AN AQUEOUS DISPERSION SO AS TO FORM A COMPOSITION CONTAINING FROM 0.015 PERCENT BY WEIGHT TO ABOUT 1.7 PERCENTY BY WEIGHT OF POLY(TETRAFLUOROETHYLENE).
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |