PARTICLE AGGLOMERATE AND ITS PRODUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a light-diffusing agent which can provide a sufficient light diffusion power by the addition of a small amount and can realize an excellent light transmission. SOLUTION: A dispersion liquid containing at least two kinds of particles each having an average particle size in the range 0.01-5μm and a thermal decomposition start temperature of 170 deg.C or higher is spray dried to give agglomerates having an average agglomerate size in the range of 2-50μm (in the range of 5-50 times the average particle size).