INTERLAYER FILM FOR MULTILAYER GLASS AND MULTILAYER GLASS Russian patent published in 2018 - IPC C03C27/12 B32B17/10 

FIELD: technological processes.

SUBSTANCE: invention relates to the interlayer film for laminated glass. Two surfaces of the interlayer film for laminated glass have different glass transition temperatures, respectively, a lower glass transition temperature (°C) among the glass transition temperatures is designated X. When two surfaces on both sides of the interlayer film have the same glass transition temperature, the glass transition temperature (°C) of each surface of the interlayer film is designated X. Energy of fracture under tension (J/mm²) of the interlayer film is denoted by Y. In this case, the value of X is equal to or greater than 20 °C and equal to or less than 50 °C, and the Y value is equal to or greater than (0.043X+0.83) J/mm².

EFFECT: increased resistance of laminated glass to penetration.

25 cl, 4 dwg, 7 tbl