| abstract |
The present invention provides an interlayer film for laminated glass which can enhance, when used in a laminated glass, the sound-insulating property of the laminated glass in a high frequency range over a wide temperature range. n An interlayer film for laminated glass of the present invention includes first, second, and third layers, wherein when a cloud point C1 is measured by using a first liquid containing 100 parts by weight of a first plasticizer and 8 parts by weight of a first polyvinyl acetal resin contained in the first layer, a cloud point C2 is measured by using a second liquid containing 100 parts by weight of a second plasticizer and 8 parts by weight of a second polyvinyl acetal resin contained in the second layer, and a cloud point C3 is measured by using a third liquid containing 100 parts by weight of a third plasticizer and 8 parts by weight of a third polyvinyl acetal resin contained in the third layer, the cloud point C1 is 10°C or lower; the cloud point C2 is higher than the cloud point C1 by at least 5°C; and the cloud point C3 is higher than the cloud point C1 by at least 50°C and higher than the cloud point C2. |