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AssigneeSouthern Research Institute
InventorsThomas R. Tice, William E. Meyers, Richard M. Gilley, William M. Shannon
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There is disclosed, in one aspect, a long-acting biocidal composition. This composition comprises a chlorine dioxide-liberating compound, such as sodium chlorite, and sufficient organic acid-generating compound, such as poly(lactic acid), to lower the pH of the composition to less than about 7. The organic acid-generating compound is present in a form whereby it is released gradually in the presence of water. Preferably the organic acid-generating compound is encapsulated within or by a film-forming polymer. In another aspect, there is disclosed a method of disinfecting a surface over a prolonged period of time. This method comprises applying to the surface a small but effective amount of the long-acting biocidal composition described above.
A long-acting biocidal composition comprising a chlorine dioxide-liberating compound and sufficient hydrolyzable organic acid-generating polymer to lower the pH of said composition to less than about 7, said organic acid-generating polymer being present in a form whereby it is released gradually in the presence of water.
A long-acting biocidal composition comprising a chlorine dioxide-liberating compound and sufficient hydrolyzable organic acid-generating polymer to lower the pH of said composition to less than about 7, said organic acid-generating polymer being in the form of discrete microspheres or microparticles which hydrolyze in the presence of water.
A long-acting biocidal composition comprising a chlorine dioxide-liberating compound and sufficient hydrolyzable organic acid-generating polymer to lower the pH of said composition to less than about 7, said organic acid-generating polymer being encapsulated by a film forming polymer which will allow sufficient water to contact said organic acid-generating compound to generate said organic acid.
A method of disinfecting a surface over a prolonged period of time comprising applying to said surface a small but biocidally effective amount of a long-acting biocidal composition comprising a chlorine dioxide-liberating compound and sufficient hydrolyzable organic acid-generating polymer to lower the pH of said composition to less than about 7, said organic acid-generating polymer being present in a form whereby it is released gradually in the presence of water.
A method of disinfecting a surface over a prolonged period of time comprising applying to said surface a small but biocidally effective amount of a long-acting biocidal composition comprising a chlorine dioxide-liberating compound and sufficient hydrolyzable organic acid-generating polymer to lower the pH of said composition to less than about 7, said organic acid-generating polymer being in the form of discrete microspheres which hydrolyze in the presence of water.
A method of disinfecting a surface over a prolonged period of time comprising applying to said surface a small but biocidally effective amount of a long-acting biocidal composition comprising a chlorine dioxide-liberating compound and sufficient organic acid-generating polymer to lower the pH of said composition to less than about 7, said organic acid-generating polymer being encapsulated by a film forming polymer which will allow sufficient water to contact said organic acid-generating compound to generate said organic acid.
Dependencies are inferred from the claim text.