a reinforced thermoplastic resin composition comprising a thermoplastic resin , a fibrous , flaky or powdery inorganic reinforcing material , and an uncured , thermally curable resin , such as a thermosetting resin , applied to the surfaces of the inorganic reinforcing material . molding of this composition by injection molding or the like yields a molded product in which the thermally curable resin has been cured by the heat during the molding to provide a strong chemical bond between the inorganic reinforcing material and the thermoplastic resin . the molded product thus obtained possesses more strength and / or elongation than the conventional thermoplastic resin product .