公开(公告)号：US20170296479A1

公开(公告)日：2017-10-19

申请号：US15508094

申请日：2015-08-31

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Fukue NAGATA ,  Katsuya KATO ,  Masahiko INAGAKI

IPC: A61K9/51 ,  A61K9/50 ,  A61K47/34

Abstract: Provided are core-shell particles which are kept stable in a solvent such as water for a long period. Each core-shell particle includes a core which contains a hydrophobic polymer having an anionic group and a shell which contains calcium phosphate. At least one of calcium atoms contained in calcium phosphate is chemically bonded to a functional group derived from the anionic group. In a method of manufacturing core-shell particles each core-shell particle includes a core which contains a hydrophobic polymer and a shell which contains calcium phosphate, the method includes the steps of: mixing a water-soluble organic solution which contains a hydrophobic polymer having an anionic group with a solution which contains calcium ion so as to obtain a first mixed solution; mixing the first mixed solution with a solution which contains phosphate ions so as to obtain a second mixed solution; and stirring the second mixed solution.