Anti-Microbial Fibres and Their Production
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United States of America Patent
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Issued Date -
Oct 18, 2007
app pub date -
Aug 4, 2005
filing date -
Aug 5, 2004
priority date (Note) -
Abandoned
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Abstract
Anti-microbial lyocell fibres incorporate an anti-microbial composition which comprises a silver compound deposited on a support material in the form of porous particles having an extended surface area and comprising an oxidic material which is essentially insoluble in water and incapable of forming hydrates. A preferred composition is silver chloride on titanium dioxide particles. The anti-microbial effect is durable to processing and the fibres are not adversely discoloured. Low concentrations of the anti-microbial composition of below 0.1 percent by weight on weight of cellulose may be used. In the process of making the fibres, the anti-microbial composition preferably is added to the pasty pre-mix of the spinning solution.
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