Intermediate film for laminated glass and laminated glass

Details Intermediate film for laminated glass and laminated glass Intermediate film for laminated glass and laminated glass

C - Chemistry, Metallurgy

03

C

C03C 27/12 (2006.01) B32B 17/10 (2006.01)

Patent

CA 2644479

Disclosed is an intermediate film for laminated glasses which contains a polyvinyl acetal resin. This intermediate film for laminated glasses can be easily bonded to a glass and enables to obtain a laminated glass having excellent transparency. Also disclosed is a laminated glass using such an intermediate film. Specifically disclosed is an intermediate film for laminated glasses which contains 100 parts by weight of a polyvinyl acetal resin and 40-75 parts by weight of a plasticizer. In this intermediate film, 4-40% by weight of the plasticizer is composed of an unsaturated fatty acid alkyl ester having 16-20 carbon atoms.

La présente invention concerne un film intermédiaire pour verres stratifiés qui contient une résine de poly(acétal de vinyle). Ce film intermédiaire pour verres stratifiés peut être facilement collé sur un verre et permet d'obtenir un verre stratifié ayant une excellente transparence. La présente invention concerne également un verre stratifié utilisant un tel film intermédiaire. La présente invention concerne spécifiquement un film intermédiaire pour verres stratifiés qui contient 100 parties en poids d'une résine poly(acétal de vinyle) et de 40 à 75 parties en poids d'un plastifiant. Dans ce film intermédiaire, de 4 à 40 % en poids du plastifiant est composé d'un ester d'alkyle d'acide gras insaturé possédant de 16 à 20 atomes de carbone.

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