US3595936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament comprising a polymer blend of polyester and polyamide containing an organic phosphorus compound and a sterically hindered phenolic compound
Assignee: Honeywell International Inc
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Filing: 1969-04-29
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Granted: 1971-07-27
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Expires: 1989-04-29
Abstract
Abstract A PROCESS FOR INCREASING THE WHITENESS OF A FILAMENT EXTRUDED FROM A POLYMER BLEND COMPRISED OF POLYESTER AND POLYAMIDE WHICH COMPRISES INCORPORATING IN THE POLYMER BLEND, PRIOR TO EXTRUSION THEREOF, ABOUT 0.05 TO 3 WEIGHT PERCENT, BASED UPON THE WEIGHT OF THE POLYAMIDE AND POLYESTER, OF AN ORGANIC PHOSPHORUS COMPOUND AND ABOUT 0.05 TO 3 WEIGHT PERCENT, BASED UPON THE WEIGHT OF THE POLYAMIDE AND POLYESTER, OF A STERICALLY HINDERED PHENOLIC COMPOUND AND MELT EXTRUDING THE POLYMER BLEND TO FORM A FILAMENT HAVING INCREASED WHITNESS.
Inventors
- 👤 Amnon Birenzvige
- 👤 Gene C Weedon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:03
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/02; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08L67/00; C08L67/02; D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; D01F6/00; D01F6/88; D01F6/90; D01F6/92; Y; Y10; Y10S; Y10S525/00; Y10S525/935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |