<p>Disclosed is a dispersion wherein nanoparticles are dispersed well and hardly agglomerate. Such a dispersion can form a coating film having different physical properties from conventional coating films when applied to paints, adhesives and coating compositions. Specifically disclosed is a resin composition wherein a filler having an average particle size of not more than 0.1 mum is dispersed in a hyperbranched polymer. Preferably, the hyperbranched polymer has a number-average molecular weight of 500-50,000 and a polydispersity index of not more than 4.</p>
