| 摘要 |
PROBLEM TO BE SOLVED: To provide an intermediate film for laminated glass having a high adhesive force between each of layers, and an intermediate film for laminated glass suppressing generation of foaming even when a laminated glass is used under high temperature environment.SOLUTION: There is provided an intermediate film 1 for laminated glass which includes a first layer 2, and a second layer 3 laminated on one surface 2a of the first layer 2. Each of the first and second layers 2 and 3 contain a polyvinyl acetal resin and a plasticizer. A degree of acetylation of the polyvinyl acetal resin in the first layer 2 and the polyvinyl acetal resin in the second layer 3 is 8 mol% or less. A content of a hydroxy group of the polyvinyl acetal resin in the first layer 2 is lower than a content of a hydroxy group of the polyvinyl acetal resin in the second layer 3. A difference between the content of the hydroxy group of the polyvinyl acetal resin in the first layer 2 and the content of the hydroxy group of the polyvinyl acetal resin in the second layer 3 is 9.5 mol% or less. |
