PROBLEM TO BE SOLVED: To provide an antibacterial composite particle that uses a polymer material that is accepted for use in the pharmaceutical and medical fields, as a base agent and has, therefore, high safety and good industrial handleability such as high flowability and can be produced easily, and a method for producing the same.SOLUTION: The surface charging properties of porous ether cellulose derivative fine particles are used, to form a composite of ether cellulose derivative fine particles with metal or metal ions in a mixed solution or mixture dispersion of the metal or metal ions.SELECTED DRAWING: NoneCOPYRIGHT: (C)2020,JPO&INPIT【課題】本発明は、医薬・医療用分野で使用が認められているポリマー材料を基剤とすることで、安全性が高く、かつ高流動性などの工業的な取り扱い性も良く且つ製造が容易な抗菌性複合粒子およびその製造方法の提供を課題とする。【解決手段】多孔質エーテル系セルロース誘導体微粒子の表面帯電特性を利用し、金属または金属イオンとの混合溶液あるいは混合分散液中でエーテル系セルロース誘導体微粒子と複合化させる。【選択図】なし
