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US5405644A
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Process for producing antimicrobial fiber
Assignee: Toagosei Co Ltd
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Filing: 1993-11-03
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Granted: 1995-04-11
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Expires: 2013-11-03
Abstract
Abstract A process for producing an antimicrobial fiber having a silver-containing inorganic microbicide characterized by using a treating solution for producing said fiber which contains a discoloration inhibitor represented by the following general formula: ##STR1## wherein R 1 is hydrogen or a lower alkyl group and R 2 is hydrogen or an alkali metal.
Inventors
- 👤 Shuichi Ohsumi
- 👤 Hideki Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:18
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/58; A; A46; A46D; A46D1/00; A01; A01N; A01N25/00; A01N25/34; A01N59/00; A01N59/16; A46D1/006; D06M13/00; D06M13/322; D06M13/35; D06M13/352; D06M16/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/294; Y10T428/2958; Y10T428/2964; Y10T428/2971
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
65 words
In a process for producing an antimicrobial fiber incorporating a silver-containing inorganic microbicide, comprising a step of passing said fiber through a liquid treating solution, the improvement wherein said liquid treating solution contains a discoloration inhibiting effective amount of a discoloration inhibitor of the formula: ##STR4## wherein R 1 is hydrogen or a lower alkyl group and R 2 is hydrogen or an alkali metal.
Claim 2
Dependent Claim
65 words
In a process for producing an antimicrobial fiber incorporating a silver-containing inorganic microbicide, comprising a step of passing said fiber through a liquid treating solution, the improvement wherein said liquid treating solution contains a discoloration inhibiting effective amount of a discoloration inhibitor of the formula: ##STR4## wherein R 1 is hydrogen or a lower alkyl group and R 2 is hydrogen or an alkali metal.
Claim 3
Dependent Claim
18 words
A process according to claim 1, wherein R 1 is methyl and R 2 is hydrogen or potassium.
Claim 4
Dependent Claim
31 words
A process according to claim 1, wherein the treating solution contains the discoloration inhibitor in an amount of 0.005-5 parts by weight per 100 parts by weight of the treating solution.
Claim 5
Dependent Claim
21 words
A process according to claim 1, wherein the silver-containing inorganic microbicide is an inorganic ion exchanger having silver ion supported thereon.
Claim 6
Dependent Claim
91 words
A process according to claim 4, wherein the silver-containing inorganic microbicide is represented by the following general formula: Ag.sub.p M.sup.1.sub.q M.sup.2.sub.2 (PO.sub.4).sub.3.nH.sub.2 O wherein M 1 is at least one ion selected from the group consisting of alkali metal ions, alkaline earth metal ions, ammonium ion and hydrogen ion; M 2 is a tetravalent metal selected from the group consisting of Ti, Zr and Sn; n is a number satisfying 0≦n≦6; and p and q are positive numbers satisfying p+mq=1 wherein m is a valence of the ion M 1 .
Claim 7
Dependent Claim
12 words
A process according to claim 5, wherein p is 0.01 to 0.5.
Claim 8
Dependent Claim
25 words
A process according to claim 1 wherein said liquid treating solution is an oil, an aqueous alkali solution, a bleaching solution or a detergent solution.
Claim 9
Dependent Claim
37 words
A process according to claim 4, wherein the inorganic ion exchanger is selected from the group consisting of zeolite, hydroxyapatite, zirconium phosphate, titanium phosphate, potassium titanate, antimony oxide hydrate, bismuth oxide hydrate, zirconium oxide hydrate and hydrotalcite.
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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) | 1998-04-10 | 1998-10-10 | 1999-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-10 | 2002-10-10 | 2003-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-10 | 2006-10-10 | 2007-04-11 | $7700.00 | Window Closed / Lapsed |