Light-activated antimicrobial and antiviral materials
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United States of America Patent
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Nov 3, 1998
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N/A
app pub date -
Feb 19, 1997
filing date -
Dec 28, 1994
priority date (Note) -
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Abstract
A substrate such as a woven or nonwoven fabric bound with a light-activated dye alone or in combination with additional conventional antimicrobial agents. The substrate is impregnated with a light-activated non-leachable dye having antimicrobial and/or antiviral characteristics which can be imparted to the substrate. The dye is bound by a cationic or anionic binder such as a water soluble polymer or carrageenan. Upon exposure to normal light, the dye generates singlet oxygen that kills microorganisms and viruses.
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