Drug – bio-affecting and body treating compositions – Identification or warning feature – Taste or smell or chemical irritation to the eye – nose – or...
Patent
1984-10-24
1986-08-26
Hruskoci, Peter
Drug, bio-affecting and body treating compositions
Identification or warning feature
Taste or smell or chemical irritation to the eye, nose, or...
210501, 424132, A01N 2526
Patent
active
046082476
ABSTRACT:
A composition and method for the bactericidal treatment of water with oligodynamic metal ions. The composition comprises a particulate silver yielding material and a particulate filler material which is intermixed with the silver yielding material. The silver yielding material comprises a highly porous carrier having a hardness which is greater than that of elemental silver and a layer of elemental silver on the surfaces of the carrier, and the filler material comprises a material, such as charcoal, having a hardness which is less than that of elemental silver. The composition is utilized in accordance with the method of the invention by passing a stream of water through a quantity of the composition to cause the particles of silver yielding material to mechanically interact with each other to release silver into the water. The particles of filler material, intermixed with the silver yielding material, buffer this mechanical interaction to provide a relatively slow release of silver from the composition which can be effectively controlled so that the composition and method can be effectively used in substantially closed systems, such as swimming pool systems.
REFERENCES:
patent: 2017456 (1935-10-01), Gudmundsen
patent: 2521713 (1950-09-01), Goetz
patent: 3268444 (1966-08-01), Renn
patent: 3788982 (1974-01-01), Zsoldos et al.
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patent: 4238334 (1980-12-01), Halbfoster
patent: 4353741 (1982-10-01), Capuano et al.
patent: 4396512 (1983-08-01), Beauman et al.
patent: 4407865 (1983-10-01), Nice
Hruskoci Peter
LeMire George J.
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