US4835019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide yarn provided with a built-in antibacterial capacity and method for its production
Assignee: Individual
•
Filing: 1988-04-20
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Granted: 1989-05-30
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Expires: 2008-04-20
Abstract
Abstract Polyamide yarn provided with a built-in antimicrobial capacity characterized by the adhesive on the fiber surface of an antimicrobial agent comprising an organosilicon quaternary ammonium salt and a surfactant comprising an alkyl-, aryl-, alkenyl-, or arylsulfonate salt, optionally with the presence of a level-dyeing promoter.
Inventors
- 👤 William C. White
- 👤 Yukio Yamahara
- 👤 Koji Tajiri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:10
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/44; D02G3/449; D06; D06M; D06M13/00; D06M13/50; D06M13/51; D06M13/513; D06M16/00; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10S8/00; Y10S8/21; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
95 words
In a filament spinning process in which a polymer is melt-spun from a spinneret and subsequently drawn and heated, the improvement comprising spinning a melt spun continuous polyamide undrawn filament, the filament having a molecular structure that has not been completely stabilized, applying to the surface of the filament, fixing an adhering thereto effective amounts of both an organosilicon quaternary ammonium salt and a surfactant selected from the group consisting of alkyl, aryl, and aralkylsulfonate salts, the quaternary ammonium salt and the surfactant being applied to the filament before the filament is drawn and heated.
Claim 2
Dependent Claim
95 words
In a filament spinning process in which a polymer is melt-spun from a spinneret and subsequently drawn and heated, the improvement comprising spinning a melt spun continuous polyamide undrawn filament, the filament having a molecular structure that has not been completely stabilized, applying to the surface of the filament, fixing an adhering thereto effective amounts of both an organosilicon quaternary ammonium salt and a surfactant selected from the group consisting of alkyl, aryl, and aralkylsulfonate salts, the quaternary ammonium salt and the surfactant being applied to the filament before the filament is drawn and heated.
Claim 3
Dependent Claim
50 words
The process as described in claim 1, wherein the organosilicon quaternary ammonium salt has the general formula ##STR7## wherein R 1 is a C 8-22 long-chain alkyl group; R 2 , R 3 and R 4 are each alkyl groups; and X is Cl, Br, I or CH 3 COO.
Claim 4
Dependent Claim
21 words
The process as described in claim 2, wherein the organosilicon quaternary ammonium salt is 3-propyldimethyl-octadecylammonium chloride with the following formula ##STR8##
Claim 5
Dependent Claim
43 words
The process as described in claim 3, wherein the surfactant is a sulfonate of diphenyl oxide with the following formula ##STR9## wherein M is an alkali metal, alkaline earth metal salt, or ammonium; and R is hydrogen, or a C 5-18 alkyl group.
Claim 6
Dependent Claim
44 words
The process as described in claim 4 wherein the organosilicon quaternary ammonium salt and the surfactant are fixed and adhered to the surface of the filament in the presence of a level-dyeing promoter which is a nonionic surfactant slightly cationic in the acid region.
Claim 7
Dependent Claim
15 words
The process as described in claim 5, wherein the level-dyeing promoter is a polyoxyethylene-laurylamino ether.
Claim 8
Dependent Claim
22 words
The process as described in claim 5, wherein the level-dying promoter is the ethylene oxide, propylene oxide, adduct of oleic acid diethanolamide.
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) | 1992-05-29 | 1992-11-28 | 1993-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-29 | 1996-11-28 | 1997-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-29 | 2000-11-28 | 2001-05-30 | $7700.00 | Window Closed / Lapsed |