US3899563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic fibers having improved soil and stain repellency
Assignee: Honeywell International Inc
•
Filing: 1973-07-23
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Granted: 1975-08-12
•
Expires: 1993-07-23
Abstract
Abstract The soil and stain repellency of extruded filaments of a synthetic resin can be improved by incorporating in the resin a small amount, about 1%, of an amphipathic compound having from one to four fluoroalkyl groups pendent from an organic radical. The repellency is provided by the fluoroalkyl groups, which tend to be concentrated at the surface of the fiber.
Inventors
- 👤 Bryce C Oxenrider
- 👤 Cyril Woolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:54
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/02; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/71; C08G18/712; C08K; C08K5/00; C08K5/16; C08K5/20; C08K5/21; C08K5/34; C08K5/3467; C08K5/3477; C08L77/06; C09; C09D; C09D5/00; D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; D01F6/00; D01F6/58; D01F6/60; C08L2666/00; C08L2666/02; C08L2666/14; C08L2666/20; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
86 words
IN A PROCESS FOR PREPARING A MELT EXTRUDED FILAMENT OF A MELT EXTRUDABLE FIBER-FORMING THERMOPLASTIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYPROPYLENE, POLYAMIDE, POLYESTER, POLYACRYLONITIRLE, AND BLENDS THEREOF, THE IMPROVEMENT WHICH COMPRISES INTIMATELY BLENDING WITH THE RESIN PRIOR TO EXTRUDING THE RESIN, FROM ABOUT 0.1 TO ABOUT 2 PERCET BY WEIGHT BASED ON THE WEIGHT OF THE RESIN OF AN ADDITIVE WHICH IMPROVES THE SOLID AND STAIN REPELLENCY OF THE FILAMENT, SAID ADDITIVE BEING SELECTED FROM THE GROUP CONSISTING OF: A. MONOAMIDES OF THE FORMULA
Claim 2
Dependent Claim
86 words
IN A PROCESS FOR PREPARING A MELT EXTRUDED FILAMENT OF A MELT EXTRUDABLE FIBER-FORMING THERMOPLASTIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYPROPYLENE, POLYAMIDE, POLYESTER, POLYACRYLONITIRLE, AND BLENDS THEREOF, THE IMPROVEMENT WHICH COMPRISES INTIMATELY BLENDING WITH THE RESIN PRIOR TO EXTRUDING THE RESIN, FROM ABOUT 0.1 TO ABOUT 2 PERCET BY WEIGHT BASED ON THE WEIGHT OF THE RESIN OF AN ADDITIVE WHICH IMPROVES THE SOLID AND STAIN REPELLENCY OF THE FILAMENT, SAID ADDITIVE BEING SELECTED FROM THE GROUP CONSISTING OF: A. MONOAMIDES OF THE FORMULA
Claim 3
Dependent Claim
18 words
The improvement of claim 1 wherein the resin is nylon-6 or nylon-66 and the additive is 1,7-bis(4-perfluoroisopropoxybutyryl)-1,4,7-triazaheptane monoglutaramide.
Claim 4
Dependent Claim
22 words
THE IMPROVEMENT OF CLAIM 1 INCLUDING THE ADDITIONAL STEP OF ANNEALING THE EXTRUDED FILAMENT TO LOWER THE SURFACE ENERGY OF THE FILMENT.
Claim 5
Dependent Claim
36 words
The improvement of claim 1 wherein said additive is blended with the resin prior to extruding the resin in an amount of from 0.5 to 1.5 percent by weight based on the weight of the resin.
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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) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |