INTERLAYER FILM FOR LAMINATED GLASS AND LAMINATED GLASS

• Main Authors: TAKEDA YUMA, IWAMOTO TATSUYA, MINAKUCHI NAMI
• Format: Patent
• Language: English; Japanese
• Published: 14.05.2020
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MINERAL OR SLAG WOOL; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

To provide an interlayer film for laminated glass that can improve bending rigidity and acoustic insulation of the laminated glass.SOLUTION: An interlayer film for laminated glass according to the present invention has a single-layer structure or a two or more-layer structure and includes a first layer containing a polyvinyl acetal resin and a plasticizer, in which the first layer contains silica particles, and the ratio of the content of the silica particles in the first layer to a total of the content of the polyvinyl acetal resin in the first layer and the content of the plasticizer in the first layer is 0.03 or more to 0.4 or less.SELECTED DRAWING: Figure 1 【課題】合わせガラスの曲げ剛性を高めることができ、かつ合わせガラスの遮音性を高めることができる合わせガラス用中間膜を提供する。【解決手段】本発明に係る合わせガラス用中間膜は、１層の構造又は２層以上の構造を有する合わせガラス用中間膜であり、ポリビニルアセタール樹脂と可塑剤とを含む第１の層を備え、前記第１の層がシリカ粒子を含み、前記第１の層中の前記ポリビニルアセタール樹脂の含有量と前記第１の層中の前記可塑剤の含有量との合計に対する前記第１の層中の前記シリカ粒子の含有量の比が０．０３以上、０．４以下である。【選択図】図１