Aseptics
AssigneeSanten Pharmaceutical Co., Ltd.
InventorsKenji Morishima, Norihisa Hatano
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Abstract
An object of the present invention is to provide safe preservatives by combining components widely used as additives of aqueous liquids. Preferred preservatives are obtained by combining boric acid and/or borax, ethylenediaminetetraacetic acid or a salt thereof and polyvinyl pyrrolidone. Preservation effects can be enhanced by further combining cellulosic polymers with the preservatives.
Claims7
A preservative comprising a combination of (A) boric acid and/or borax, (B) ethylenediaminetetraacetic acid or a salt thereof and (C) polyvinyl pyrrolidone.
An aqueous liquid preparation comprising a combination of (A) boric acid and/or borax in an amount of 0.05 to 3.0% by weight, (B) ethylenediaminetetraacetic acid or a salt thereof in an amount of 0.01 to 0.3% by weight and (C) polyvinyl pyrrolidone in an amount of 0.02 to 4.0% by weight as a preservative.
Dependencies are inferred from the claim text.