Method for producing polyphenylene sulfide resin fine particles, polyphenylene sulfide resin fine particles, and dispersion thereof

摘要

PPROBLEM TO BE SOLVED: To provide a process for producing fine PPS resin particles and a dispersion thereof by a simple process which can be industrially practiced, and to provide extremely fine PPS resin particles and PPS resin particles having an even particle size. PSOLUTION: The process for producing fine polyphenylene sulfide resin particles is characterized by including the following steps (a) and (b): a step (a) in which a polyphenylene sulfide resin is heated in an organic solvent to obtain a solution of the polyphenylene sulfide resin (dissolution step); and a step (b) in which the solution is flash-cooled to precipitate fine particles of the polyphenylene sulfide resin (precipitation step). PCOPYRIGHT: (C)2010,JPO&INPIT