RESIN PARTICLE AND ITS APPLICATION

摘要

PROBLEM TO BE SOLVED: To obtain resin particles excellent in such a physical property as polymerization stability, yield, uniformity of particle size, etc., by subjecting a polymerizable monomer to suspension polymerization in the presence of an aromatic compound having each group of NO2 , SO3 Na and secondary amino. SOLUTION: The objective resin particles are obtained by adding 0.0001 to 10 pts.wt of an aromatic compound having at least each one group of NO2 , SO3 Na and secondary amino (preferably, a compound of the formula) to 100 pts.wt. of a polymerizable monomer and subjecting the polymerizable monomer (preferably, styrene-based monomer, acrylic acid-based or methacrylic acid-based monomer) to suspension polymerization in an aqueous medium at 10 to 90 deg.C, preferably, about 30 to 80 deg.C.