| abstract |
An interlayer film that can be laminated only by a vacuum press method without requiring an autoclave and that can obtain a laminated glass that is particularly excellent in sound insulation, and an interlayer film The laminated glass used is provided. The creep elastic modulus is 4655 Pa /% or more at 45 ° C., 49 Pa /% or less at 100 ° C., and the average change amount of the creep elastic modulus with respect to temperature is 7.84 Pa /% · ° C. The intermediate film in which at least one thermoplastic resin layer is present, the intermediate film in which the thermoplastic resin layer is present in the outermost layer, and the thermoplastic resin layer are plasticized polyvinyl acetal resin layers and disposed in the inner layer The total of the degree of acetalization of the plasticized polyvinyl acetal resin layer and the amount of residual acetyl groups is larger than the sum of the degree of acetalization of the plasticized polyvinyl acetal resin layer present in the outermost layer and the amount of residual acetyl groups When the intermediate film and the plasticizer migrate between layers, the intermediate film and the intermediate film in which at least two layers have different equilibrium plasticizer contents, and , Laminated glass using the interlayer film. [Selection figure] None |