Laminated glass interlayer film, laminated glass, and laminate for laminated glass

A laminate for laminated glass used for lamination on a first resin layer to form an interlayer film for laminated glass, the laminate comprising

• a plastic layer and a second resin layer laminated on one surface of the plastic layer, the first resin layer comprising a thermoplastic resin, and having a thickness of 900 μm or less, and a magnesium element content of less than 25 ppm, the second resin layer comprising a thermoplastic resin, and having a total content of magnesium element and potassium element of 25 ppm or more, and the laminate for laminated glass satisfying requirements to have a mean break height (MBH) of 5 m or more in a falling ball test conducted in accordance with JIS R 3212:
• 2015 for two glass sheets each having a thickness of 2.5 mm laminated via the interlayer film for laminated glass formed by laminating the laminate for laminated glass on the first resin layer such that the plastic layer is disposed between the first and second resin layers, in both cases with a water content of the interlayer film for laminated glass of 0.4% and 2.0%.

A laminate for laminated glass used for lamination on a second resin layer to form an interlayer film for laminated glass, the laminate comprising a plastic layer and a first resin layer laminated on one surface of the plastic layer, the first resin layer comprising a thermoplastic resin, and having a thickness of 900 μm or less, and a magnesium element content of less than 25 ppm, the second resin layer comprising a thermoplastic resin, and having a total content of magnesium element and potassium element of 25 ppm or more, and the laminate for laminated glass satisfying requirements to have a mean break height (MBH) of 5 m or more in a falling ball test conducted in accordance with JIS R 3212:

• 2015 for two glass sheets each having a thickness of 2.5 mm laminated via the interlayer film for laminated glass formed by laminating the laminate for laminated glass on the second resin layer such that the plastic layer is disposed between the first and second resin layers, in both cases with a water content of the interlayer film for laminated glass of 0.4% and 2.0%.