Interlayer for laminated glass and laminated glass

Details Interlayer for laminated glass and laminated glass Interlayer for laminated glass and laminated glass

C - Chemistry, Metallurgy

03

C

C03C 27/12 (2006.01) B32B 17/10 (2006.01) C08J 3/18 (2006.01) C08L 29/14 (2006.01)

Patent

CA 2270416

The present invention has it for its object to provide an interlayer film for laminated glass and a laminated glass which shows a much decreased extent of blushing of the peripheral region thereof even when placed in a high-humidity atmosphere, without compromise in those fundamental performance characteristics which are required of laminated glass, such as transparency, weather resistance, adhesion and penetration resistance. The present invention is related to an interlayer film for laminated glass comprising a plasticized poly(vinyl acetal) resin and having the haze after 24 hours of immersion is not more than 50% when said interlayer film with a thickness of 0.3 to 0.8 mm is immersed in water at 23°C .

L'invention concerne une couche intermédiaire ainsi que du verre feuilleté présentant les fonctions de base indispensables au verre feuilleté, telles que la transparence, la résistance aux intempéries, la résistance à l'adhésion et à la pénétration ainsi qu'un blanchiment réduit de la périphérie du verre même en atmosphère hautement humide. La couche intermédiaire est préparée à partir d'un film en résine d'acétal de polyvinyle plastifié, et lorsqu'elle a une épaisseur comprise entre 0,3 et 0,8 mm et qu'elle est immergée dans de l'eau à 23 DEG C , elle présente une valeur de diffusion de 50 % ou moins après 24 heures.

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