NOVELTY - A resin composition contains polyvinyl acetal having preset molecular weight characteristics and thermoplastic resin. The acetalization degree, vinyl-ester monomeric unit content, and viscosity average polymerization degree of the polyvinyl acetal is 50-85 mol%, 0.1-20 mol% and 200-5000, respectively. The thermoplastic resin is polyester, polyamide, alpha -olefin (co)polymer, cellulose resin, acrylic resin or styrene resin.    USE - Resin composition used for molded material for laminated material (all claimed) for electronic components e.g. solar cell module, junction portion of motor vehicles e.g. bumper, door mirror cover and spoiler, building, and footwear.    ADVANTAGE - The resin composition has excellent adhesiveness with respect to polar polymer and provides molded material with improved flexibility, and excellent dynamic characteristics and stability after adhesion with to-be-adhered material.    DETAILED DESCRIPTION - A resin composition contains polyvinyl acetal and thermoplastic resin. The acetalization degree, vinyl-ester monomeric unit content, and viscosity average polymerization degree of the polyvinyl acetal is 50-85 mol%, 0.1-20 mol% and 200-5000, respectively. The peak top molecular weight (A), which is measured with a differential refractive index detector when gel-permeation-chromatography measurement of the polyvinyl acetal heated at 230 degrees C for 3 hours is carried out, and peak top molecular weight (B') measured with a light absorption luminous intensity detector (at measurement wavelength of 280 nm) satisfy the relation: (A-B')/A is less than 0.6. The light absorbency at peak top molecular weight (B') is 0.50x 10-3-1x 10-2. The thermoplastic resin is polyester, polyamide, alpha -olefin (co)polymer, cellulose resin, acrylic resin or styrene resin. INDEPENDENT CLAIMS are included for the following:    (1) molded material, which consists of the resin composition; and    (2) laminated material, which is formed by coating or bonding a to-be-adhered material each other to the molded material.