METHOD OF COLLECTING POLYPHENYLENE SULPHIDE RESIN MICROPARTICLES BY HEAT CONCENTRATION

摘要

PROBLEM TO BE SOLVED: To provide a method of collecting polyphenylene sulphide resin microparticles from a fluid dispersion of polyphenylene sulphide resin microparticles in a short time.SOLUTION: A method of collecting polyphenylene sulphide resin microparticles is characterized in that a fluid dispersion comprising water 50-200 pts.mass and polyphenylene sulphide resin microparticles 1-10 pts.mass relative to N-methyl-2-pyrrolidinone 100 pts.mass is heated and concentrated up to water 5-70 pts.mass relative to N-methyl-2-pyrrolidinone 100 pts.mass before solid liquid separation.