METHOD FOR PRODUCING COMPOSITE PARTICLE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing uniform composite particles containing no by-product particle originating from a coating agent in a simple producing process without using any organic solvent harmful to human body or without applying any heat treatment and to provide the composite particles obtained by the method. SOLUTION: The method is constituted in such a way that after the fine particles are brought into contact with organic compounds in the presence of supercritical carbon dioxide or liquid carbon dioxide in a vessel, the composite particles of the fine particles and the organic compounds are produced in the depressurized vessel. By the method, the composite particles are produced.