US4615937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antimicrobially active, non-woven web used in a wet wiper
Assignee: Fort James Corp
•
Filing: 1985-09-05
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Granted: 1986-10-07
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Expires: 2005-09-05
Abstract
Abstract An antimicrobially active, non-woven web, a wet wiper containing the web, and a method of making the web. The method includes the steps of forming an unbonded fibrous web; applying throughout the unbonded fibrous web an uncured binder and an antimicrobial agent, the antimicrobial active agent being substantive to the fibers of the web and to the binder; and curing the binder material to bind the fibers together to form an antimicrobially active, non-woven web. A preferred antimicrobial agent is an organo-silicon quaternary ammonium salt, especially a 3-(trimethoxylsilyl) propyldidecylmethyl ammonium chloride or a 3-(trimethoxysilyl) propyloctadecyldimethyl ammonium chloride.
Inventors
- 👤 Michael P. Bouchette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:09
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/36; A; A01; A01N; A01N25/00; A01N25/34; A47; A47L; A47L13/00; A47L13/10; A47L13/16; A47L13/17; A61; A61K; A61K9/00; A61K9/70; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/60; D04H1/64; D06; D06M; D06M13/00; D06M13/322; D06M13/46; D06M13/463; D06M13/50; D06M13/51; D06M13/513; D06M15/00; D06M15/693; D06M16/00; D21H17/00; D21H17/03; D21H17/05; D21H17/13; D21H17/20; D21H27/00; A61F; A61F13/00; A61F13/02; A61F13/0276; A61F2013/0296; D06M2101/00; D06M2101/02; D06M2101/04; D06M2101/06; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T442/00; Y10T442/20; Y10T442/2525; Y10T442/60
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
75 words
An antimicrobially active, non-woven web comprising: (a) bonded fibers; (b) a binder substantially uniformly distributed on the fibers, the binder being present in an amount effective to bind the fibers; and (c) an antimicrobial agent substantially uniformly distributed on the fibers, the antimicrobial agent being substantive to the fibers and to the binder when the web is either wet or dry to prevent the antimicrobial agent from substantially diffusing from the fibers or the binder.
Claim 2
Dependent Claim
75 words
An antimicrobially active, non-woven web comprising: (a) bonded fibers; (b) a binder substantially uniformly distributed on the fibers, the binder being present in an amount effective to bind the fibers; and (c) an antimicrobial agent substantially uniformly distributed on the fibers, the antimicrobial agent being substantive to the fibers and to the binder when the web is either wet or dry to prevent the antimicrobial agent from substantially diffusing from the fibers or the binder.
Claim 3
Dependent Claim
22 words
The web of claim 1, wherein the fibers are selected from the group consisting of cellulosic fibers, synthetic fibers, and combinations thereof.
Claim 4
Dependent Claim
12 words
The web of claim 1, wherein the binder is a polymeric binder.
Claim 5
Dependent Claim
13 words
The web of claim 3, wherein the polymeric binder is a latex binder.
Claim 6
Dependent Claim
15 words
The web of claim 1, wherein the antimicrobial agent is an organo-silicon quaternary ammonium salt.
Claim 7
Dependent Claim
26 words
The web of claim 5, wherein the organo-silicon quaternary ammonium salt is selected from the group consisting of a 3-(trimethoxysilyl)propyldidecylmethyl ammonium salt and 3-(trimethoxysilyl)propyloctadecyldimethyl ammonium salt.
Claim 8
Dependent Claim
12 words
The web of claim 6, wherein the salt has a chloride anion.
Claim 9
Dependent Claim
26 words
The web of claim 1, wherein the amount of the antimicrobial agent is in the range of 0.25% to about 3% of the total web weight.
Claim 10
Dependent Claim
26 words
The web of claim 1, wherein the amount of the binder is in the range of about 5% to about 30% of the total web weight.
Claim 11
Dependent Claim
18 words
The web of claim 1, wherein the antimicrobial agent is safe for contact with human skin and eyes.
Claim 12
Dependent Claim
11 words
The web of claim 1, wherein the bonded fibers are air-laid.
Claim 13
Dependent Claim
11 words
The web of claim 1, wherein the bonded fibers are wet-laid.
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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) | 1989-10-06 | 1990-04-07 | 1990-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-06 | 1994-04-07 | 1994-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-06 | 1998-04-07 | 1998-10-07 | $7700.00 | Window Closed / Lapsed |