INTERMEDIATE FILM FOR LAMINATED GLASS AND LAMINATED GLASS Russian patent published in 2020 - IPC C03C27/12 B32B7/02 

FIELD: glass.

SUBSTANCE: invention relates to laminated glass obtained using an intermediate film for laminated glass. Intermediate film for laminated glass according to this invention has structure of two or more layers and has the first layer containing thermoplastic resin, and the second layer containing thermoplastic resin. Second layer is located on side of first surface of first layer, and intermediate film has Characteristic A: "glass transition temperature of second layer is 32 °C or more, glass transition temperature of the first layer is lower than the glass transition temperature of the second layer, and the thickness of the intermediate film ranges from more than 787 mcm to 950 mcm or less or Characteristic B: "glass transition temperature of the second layer is 25 °C or more, glass transition temperature of first layer is lower than glass transition temperature of second layer, and thickness of intermediate film is more than 950 mcm.

EFFECT: technical result is improvement of sound-insulating properties in high-frequency region of 2000 Hz or more.

15 cl, 2 dwg, 3 tbl