Magnetic iron oxide-dextran complex and process for its production
AssigneeMeito Sangyo Kabushiki Kaisha
InventorsMasakatsu Hasegawa, Syusaburo Hokkoku
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Abstract
A magnetic iron oxide-dextran complex. This novel compound can be produced by reacting an aqueous sol of magnetic iron oxide with dextran having an intrinsic viscosity of about 0.02 to about 0.5 at an elevated temperature in an aqueous medium, and is useful not only in pharmaceutical and medical fields as a hematinic medium, a radiopaque medium, a blood measuring agent, or a carrier for a medicinal substance, but also in wide range of other technological fields where its magnetic property can be utilized.
Claims14
A water dispersable magnetic iron oxide-dextran complex wherein the proportion of the dextran, calculated as its anhydrous glucose unit, is about 0.1 to about 1 mole per mole of iron oxide, calculated as an iron atom.
A process for producing a magnetic iron oxide-dextran complex, which comprises reacting an aqueous sol of magnetic iron oxide with dextran having an intrinsic viscosity of about 0.02 to about 0.5 at a temperature of from about 50.degree. to 120.degree. C in an aqueous medium.
Dependencies are inferred from the claim text.