申请人:SEKISUI CHEMICAL CO., LTD.
公开号:EP3909929A1
公开(公告)日:2021-11-17
An interlayer film for laminated glass of the present invention comprises a thermoplastic resin, a carboxylic acid, and an alkali (alkaline earth) metal, wherein, when a molar concentration per unit volume of the alkali (alkaline earth) metal in the interlayer film for laminated glass, measured by ICP atomic emission spectrophotometry is A (mol/m3); a molar concentration per unit volume of the carboxylic acid in the interlayer film for laminated glass, measured by GC-MS is B (mol/m3); a molar concentration per unit volume of the carboxylic acid in the interlayer film for laminated glass, measured by GC-MS after a hydrochloric acid aqueous solution is added to the interlayer film for laminated glass to be left at 23°C for 12 hours is Y; and a molar concentration per unit volume of the carboxylic acid, obtained by subtracting the molar concentration B from the concentration Y is D (mol/m3), the molar concentration A is more than 0.35 mol/m3 and less than 1.00 mol/m3, and a carboxylic acid isolation ratio (1) represented by (1 - D/A) × 100 is 40% or less.
本发明的夹层玻璃用中间膜由热塑性树脂、羧酸和碱(碱土)金属组成,其中,当通过 ICP 原子发射分光光度法测量夹层玻璃用中间膜中碱(碱土)金属的摩尔浓度单位体积为 A(mol/m3)时;通过 GC-MS 测量夹层玻璃用中间膜中羧酸的摩尔浓度单位体积为 B(mol/m3)时;将盐酸水溶液加入夹层玻璃用中间膜并在 23°C 下放置 12 小时后,用 GC-MS 测得的夹层玻璃用中间膜中羧酸的摩尔浓度为 Y;从浓度 Y 中减去摩尔浓度 B 得到的羧酸的摩尔浓度为 D(mol/m3),摩尔浓度 A 大于 0.35摩尔/立方米且小于1.00摩尔/立方米,羧酸分离率(1)由(1-D/A)×100表示,等于或小于40%。