<p>Disclosed is a resin composition wherein dispersibility of a modifying agent such as an inorganic substance is improved. The acid resistance of this resin composition is not deteriorated even when a modifying agent is blended therein. Specifically, the resin composition includes a base material having a cyano group-containing organic layer and an organic resin. This resin composition is extremely excellent in acid resistance when compared with organic resins which use a base material having an organic layer not containing a cyano group.</p>
