Patent US4649079A successfully refreshed from Google Patents.
US4649079A
Expired / Lapsed
US
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Method of incorporating antimicrobial agents into fibers
Assignee: ATK Launch Systems LLC
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Filing: 1986-04-03
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Granted: 1987-03-10
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Expires: 2006-04-03
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
- 👤 Lawrence J. Guilbault
- 👤 Thomas C. McEntee
- 👤 Judith L. Koob
- 👤 James F. Brophy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:22
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: 10
Claim 1
Independent Claim
82 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 the antimicrobial agent 4,5-dichloro-2-cyclohexyl-3-isothiazolone 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
82 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 the antimicrobial agent 4,5-dichloro-2-cyclohexyl-3-isothiazolone 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
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 6
Dependent Claim
13 words
The method of claim 7, wherein: said medium is a beck dye bath.
Claim 7
Dependent Claim
9 words
The product made by the process of claim 1.
Claim 8
Dependent Claim
91 words
A product comprising a fiber containing an effective amount of the antimicrobial agent 4,5-dichloro-2-cyclohexyl-3-isothiazolone to provide protection against microbial attack of said fiber; said antimicrobial agent being added to said fiber while the fiber is a solid and resulting in said antimicrobial agent being present in an essentially homogeneous cross-sectional distribution throughout said fiber and further characterized by the presence of a greater amount of active antimicrobial agent than if an equal total amount of said agent had been incorporated into said fiber when said fiber was in the molten condition.
Claim 9
Dependent Claim
91 words
A product comprising a fiber containing an effective amount of the antimicrobial agent 4,5-dichloro-2-cyclohexyl-3-isothiazolone to provide protection against microbial attack of said fiber; said antimicrobial agent being added to said fiber while the fiber is a solid and resulting in said antimicrobial agent being present in an essentially homogeneous cross-sectional distribution throughout said fiber and further characterized by the presence of a greater amount of active antimicrobial agent than if an equal total amount of said agent had been incorporated into said fiber when said fiber was in the molten condition.
Claim 10
Dependent Claim
10 words
The product of claim 7, wherein: said fiber is nylon.
References Cited (Backward Citations)
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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) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |