| abstract |
The present invention provides a polyvinyl acetal sheet, an interlayer film for laminated glass, and laminated glass, which have improved adhesion to a polyester film while maintaining transparency and penetration resistance as laminated glass. A polyvinyl acetal sheet obtained by molding a polyvinyl acetal containing 0.1 to 5% by mass of a specific acrylamide unit into a sheet. The polyvinyl acetal preferably has an average degree of polymerization of 150 to 3500, a vinyl alcohol unit of 8 to 25% by mass, and a fatty acid vinyl ester unit of 0.1 to 15% by mass. [Selection figure] None |