Biostatic polymer formed articles
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United States of America Patent
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Nov 10, 2015
Grant Date -
Jul 10, 2008
app pub date -
Feb 2, 2006
filing date -
Feb 2, 2005
priority date (Note) -
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Abstract
Compositions comprising a polyvinyl alcohol in combination with a biocide which is a plasticizer, such as a quaternary ammonium compound, or in combination with a biocide and a compatible plasticizer, and wherein the biocide forms a complex with the polyvinyl alcohol, said combination having been heated to above its melting point, said composition having a surface which remains biostatic or biocidal for at least 7 days. A hot melt of the composition may be cast or applied as a film or coating or may be extruded molded or otherwise into articles. Volatiles formed during heating may be removed from the combination e.g. by low pressure.
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