US4643920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for incorporating antimicrobials into fibers
Assignee: ATK Launch Systems LLC
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Filing: 1986-03-06
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Granted: 1987-02-17
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Expires: 2006-03-06
Abstract
Abstract A lower temperature technique for incorporating antimicrobial agents into fibers following the melt step in fiber manufacturing processes results in several advantages when contrasted with incorporation during the molten state.
Inventors
- 👤 Thomas C. McEntee
- 👤 Lawrence J. Guilbault
- 👤 James F. Brophy
- 👤 Judith L. Koob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:14
CPC Classifications
D; D06; D06M; D06M16/00; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/2971
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
81 words
A method for incorporating an antimicrobial agent into a fiber, comprising: treating a fiber which does not contain an antimicrobial agent by passing said fiber into a liquid medium containing a solution of an antimicrobial agent in a concentration sufficient to cause an effective amount of said agent to be exhausted into the fiber and to be incorporated in an essentially homogeneously cross-sectional distribution throughout said fiber; said effective amount being sufficient to provide protection against microbial attack of said fiber.
Claim 2
Independent Claim
81 words
A method for incorporating an antimicrobial agent into a fiber, comprising: treating a fiber which does not contain an antimicrobial agent by passing said fiber into a liquid medium containing a solution of an antimicrobial agent in a concentration sufficient to cause an effective amount of said agent to be exhausted into the fiber and to be incorporated in an essentially homogeneously cross-sectional distribution throughout said fiber; said effective amount being sufficient to provide protection against microbial attack of said fiber.
Claim 3
Dependent Claim
26 words
The method of claim 1, wherein: said fiber is a member selected from the group consisting of synthetic fibers, semisynthetic fibers, natural fibers, and blends thereof.
Claim 4
Dependent Claim
10 words
The method of claim 2, wherein: said fiber is nylon.
Claim 5
Dependent Claim
11 words
The method of claim 3, wherein: said antimicrobial agent is 10,10'-oxybisphenoxarsine.
Claim 6
Dependent Claim
23 words
The method of claim 4, wherein: a bath volume of fiber weight ratio from about 100:1 to 1:1 is utilized during the process.
Claim 7
Dependent Claim
14 words
The method of claim 5, wherein: said ratio is from about 30:1 to 10:1.
Claim 8
Dependent Claim
21 words
The method of claim 4, wherein: said concentration of 10,10'-oxybisphenoxarsine in said medium is from about 1 ppm to 120 ppm.
Claim 9
Dependent Claim
20 words
The method of claim 7, wherein: said 10,10'-oxybisphenoxarsine concentration in said medium is from about 15 ppm to 40 ppm.
Claim 10
Dependent Claim
21 words
The method of claim 4, wherein: from about 10 ppm to 3300 ppm of 10,10'-oxybisphenoxarsine is exhausted into said nylon fiber.
Claim 11
Dependent Claim
21 words
The method of claim 9, wherein: from about 250 pm to 500 ppm of 10,10'-oxybisphenoxarsine is exhausted into said nylon fiber.
Claim 12
Dependent Claim
22 words
The method of claim 1, wherein: said antimicrobial agent is a member selected from the group consisting of 10,10'-oxybisphenoxarsine and bis(tri-n-butyl tin)oxide.
Claim 13
Dependent Claim
11 words
The method of claim 11, wherein: said antimicrobial agent is 10,10'-oxybisphenoxarsine.
Claim 14
Dependent Claim
31 words
The method of claim 1, wherein: said antimicrobial agent is 10,10'-oxybisphenoxarsine, said fiber is nylon and the concentration of said agent is said liquid medium is from about 0.001% to 1%.
Claim 15
Dependent Claim
29 words
The method of claim 1, wherein: said medium comprises an aqueous dyeing medium which also serves as to dye said fiber during passage of said fiber through the medium.
Claim 16
Dependent Claim
13 words
The method of claim 14, wherein: said medium is a beck dye bath.
Claim 17
Dependent Claim
42 words
The method of claim 1, wherein: said antimicrobial agent is a member of the group consisting of phenoxarsines, phenarsazines, maleimides, isoindole dicarboximides having a sulfur atom bonded to the nitrogen atom of the dicarboximide group, halogenated aryl alkanols, isothazolinones, and organotin compounds.
Claim 18
Dependent Claim
11 words
The method of claim 1, wherein: said antimicrobial agent is n-(2-methylnaphthyl)maleimide.
Claim 19
Dependent Claim
11 words
The method of claim 1, wherein: said antimicrobial agent is bis-n-[(1,1,2,2-tetrachloroethyl)]-4-cyclohexene-1,2-dicarboximide.
Claim 20
Dependent Claim
11 words
The method of claim 1, wherein: said antimicrobial agent is n-trichloromethylthio-4-cyclohexene-1,2-dicarboximide.
Claim 21
Dependent Claim
12 words
The method of claim 1, wherein: said antimicrobial agent is n-trichloromethylthio phthalimide.
Claim 22
Dependent Claim
12 words
The method of claim 1, wherein: said antimicrobial agent is 2,4-dichlorobenzyl alcohol.
Claim 23
Dependent Claim
11 words
The method of claim 1, wherein: said antimicrobial agent is 2-(n-octyl-4-isothiazolin-3-one.
Claim 24
Dependent Claim
11 words
The method of claim 1, wherein: said antimicrobial agent is bis(tri-n-butyltin)oxide.
References Cited (Backward Citations)
USRE21197E
Cited
US3197430A
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US3198765A
Cited
US3198764A
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US3282878A
Cited
US3284395A
Cited
US3959556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |