METHOD FOR PRODUCING POLYMER FINE PARTICLE

摘要

Disclosed is a method for producing polymer fine particles, which is characterized in that after forming an emulsion in a system obtained by dissolving and mixing a polymer A, a polymer B and an organic solvent, and consisting of two separate phases, namely a solution phase mainly composed of the polymer A and a solution phase mainly composed of the polymer B, a poor solvent of the polymer A is brought into contact with the emulsion, thereby precipitating the polymer A.  By this method, polymer fine particles having a narrow particle size distribution can be easily synthesized.  Consequently, the method can be effectively applied to production of polymers having high heat resistance which have been difficult to produce.