INTERMEDIATE FILM FOR LAMINATED GLASS AND LAMINATED GLASS Russian patent published in 2019 - IPC C03C27/10 

FIELD: construction materials.

SUBSTANCE: intermediate layer film for laminated glass is proposed, which makes it difficult to form a gap in the end portion of the laminated glass sheet and to suppress an increase in the YI value measured on the end portion of the laminated glass sheet. In accordance with the present invention, the intermediate layer film for laminated glass is provided with a first layer, which contains a polyvinyl acetal resin and a plasticizer, and a second layer, which is located on the side of the first surface of the first layer and contains a polyvinyl acetal resin and a plasticizer. Said first layer further comprises a hindered amines light stabilizer having an alkyl group, bound to the nitrogen atom of the piperidine structure, or an alkoxy group bound to the nitrogen atom of the piperidine structure, and the second layer has a glass transition temperature of 32 °C or higher.

EFFECT: intermediate layer film for laminated glass has been proposed, making it difficult to form a gap in the end portion of a laminated glass sheet and to suppress an increase in the YI value measured on the end portion of a laminated glass sheet.

11 cl, 21 ex, 2 dwg, 3 tbl