Sekisui Chemical Co., Ltd.

Shinnen Kobata

Yoshio Aoshima

Hajime Shohi

Juichi Fukatani

Tadahiko Yoshioka

The object of the present invention is to provide an interlayer film for laminated glass which exerts excellent heat insulation or electromagnetic wave transmittance and which is suitable for producing a laminated glass having excellent fundamental performance characteristics required for the laminated glass, such as transparency, especially good haze, appropriate bond strength between an interlayer film and glass, penetration resistance, impact absorption, weather resistance, and so on. Also, the object of the present invention is to provide a laminated glass produced by using the above-mentioned interlayer film. These objects are realized by the interlayer film for laminated glass comprising an adhesive resin, wherein the average particle diameter of tin-doped indium oxide and/or antimony-doped tin oxide is ranging from 0 to 80 nm, and the number of the tin-doped indium oxide or antimony-doped tin oxide particles with a particle diameter of not less than 100 nm are dispersed not more than 1 per 1 &#x3bc;m, and also, by a laminated glass produced by interposing said interlayer film for laminated glass between at least a pair of glass sheets having a visible light transmittance rate (Tv) of not less than 65% in the light rays of 380 to 780 nm, a solar radiation transmittance rate (Ts) in the light rays of 300 to 2500 nm of not more than 80% of the mentioned visible light transmittance rate (Tv), the haze value (H) of up to 1.0% and electromagnetic wave shield (&#x394;dB) of not more than 10 dB in the wavelength of 10 to 2000 MHz.

Interlayer film for laminated glass and laminated glass

An object of the present invention is to provide an interlayer film for a laminated glass and a laminated glass, which are superior in transparency, heat shield property, electromagnetic wave permeability and weatherability. The present invention is directed to an interlayer film for a laminated glass, wherein a laminated glass, produced by interposing the film between two sheets of glass selected from the group consisting of clear glass, green glass and high heat ray absorbing glass, has an electromagnetic wave shielding performance of 10 dB or less at a frequency of 0.1 to 10 MHz and 2 to 26.5 GHz, a haze of 1.0% or less, a visible light transmittance of 70% or more and a solar radiation transmittance of 85% or less of the visible light transmittance in a wavelength region of 300 nm to 2100 nm.

Laminated glass-use intermediate film and laminated glass

The object of the present invention is to provide an interlayer film for laminated glass which exerts excellent heat insulation or electromagnetic wave transmittance and which is suitable for producing a laminated glass having excellent fundamental performance characteristics required for the laminated glass, such as transparency, especially good haze, appropriate bond strength between an interlayer film and glass, penetration resistance, impact absorption, weather resistance, and so on. Also, the object of the present invention is to provide a laminated glass produced by using the above-mentioned interlayer film. These objects are realized by the interlayer film for laminated glass comprising an adhesive resin, wherein the average particle diameter of tin-doped indium oxide and/or antimony-doped tin oxide is ranging from 0 to 80 nm, and the number of the tin-doped indium oxide or antimony-doped tin oxide particles with a particle diameter of not less than 100 nm are dispersed not more than 1 per 1 &mgr;m , and also, by a laminated glass produced by interposing said interlayer film for laminated glass between at least a pair of glass sheets having a visible light transmittance rate (Tv) of not less than 65% in the light rays of 380 to 780 nm, a solar radiation transmittance rate (Ts) in the light rays of 300 to 2500 nm of not more than 80% of the mentioned visible light transmittance rate (Tv), the haze value (H) of up to 1.0% and electromagnetic wave shield (&Dgr;dB) of not more than 11 dB in the wavelength of 10 to 2000 MHz.

Growing community of inventors

Koka-gun, Japan

Shinnen Kobata