Provided is an interlayer film for laminated glass with which distortion in the appearance of the laminated glass can be significantly suppressed. The interlayer film for laminated glass according to the present invention has one end, and the other end being at the opposite side of the one end, the other end has a thickness that is larger than a thickness of the one end, the interlayer film as a whole has a wedge angle of 0.1 mrad or more, and the following absolute value A in all sections A located every 150 mm in the following measurement of partial wedge angles is 0.4 mrad or less.

There is provided laminated glass which is high in heat shielding properties. The laminated glass according to the present invention is provided with a first laminated glass member, a second laminated glass member and an interlayer film arranged between the first and second laminated glass members; the interlayer film is provided with an infrared ray reflection layer which reflects infrared rays, a first resin layer which is arranged on a first surface side of the infrared ray reflection layer and contains a thermoplastic resin, and a second resin layer which is arranged on a second surface side of the infrared ray reflection layer and contains a thermoplastic resin; and the infrared ray transmittance in the wavelength of 780 to 2100 nm of the whole layer composed of the first laminated glass member and the first resin layer is higher than the infrared ray transmittance in the wavelength of 780 to 2100 nm of the whole layer composed of the first laminated glass member and the second resin layer.

There is provided a heat-ray shielding film mainly composed of polyvinyl acetal resin and capable of exhibiting excellent heat shielding properties, and a heat-ray shielding transparent laminated base material using the heat-ray shielding film, the heat-ray shielding film including: a compound having a heat-ray shielding function; a selective wavelength absorbing material; polyvinyl acetal resin, and a plasticizer; wherein the selective wavelength absorbing material has a transmittance profile in which a transmittance of a light having a wavelength of 550 nm is 90% or more, and a transmittance of a light having a wavelength of 450 nm is 40% or less.

The present invention provides an intermediate film for laminated glass which can improve sound insulation. The intermediate film has a layered structure including at least two layers, comprising: a first layer containing a polyvinyl acetal resin and a plasticizer; and a second layer positioned on a first surface of the first layer. In a phase diagram of three values including a degree of acetalization, a degree of acetylation, and a hydroxyl group content of the polyvinyl acetal resin contained in the first layer, the values of the degree of acetalization, the degree of acetylation, and the hydroxyl group content each fall within a region surrounded by a line including four straight lines connecting first, second, third, and fourth coordinates, which respectively have a degree of acetalization:degree of acetylation:hydroxyl group content of 70 mol %:30 mol %:0 mol %, 34 mol %:30 mol %:36 mol %, 94 mol %:0 mol %:6 mol %, and 100 mol %:0 mol %:0 mol %.

There is provided an interlayer film for laminated glass which is high in heat shielding properties. The intermediate film for laminated glass according to the present invention is provided with an infrared ray reflection layer which reflects infrared rays, a first resin layer which is arranged on a first surface side of the infrared ray reflection layer and contains a thermoplastic resin, and a second resin layer which is arranged on a second surface side of the infrared ray reflection layer and contains a thermoplastic resin; and the infrared ray transmittance in the wavelength of 780 to 2100 nm of the first resin layer is higher than the infrared ray transmittance in the wavelength of 780 to 2100 nm of the second resin layer.

Provided is an interlayer film for laminated glass with which distortion in the appearance of the laminated glass can be significantly suppressed. The interlayer film for laminated glass according to the present invention has one end, and the other end being at the opposite side of the one end, the other end has a thickness that is larger than a thickness of the one end, the interlayer film as a whole has a wedge angle of 0.1 mrad or more, and the following absolute value A in all sections A located every 150 mm in the following measurement of partial wedge angles is 0.4 mrad or less.

Provided is an interlayer film for laminated glass which produces a high contrast image under light radiation, is less susceptible to color changes, and allows for control of the adhesion, as well as a laminated glass including the interlayer film. The interlayer film includes a light emitting layer containing a polyvinyl acetal, a light emitting material having a terephthalic acid ester structure, and a potassium salt.

A UV stable polymer composition comprising a poly(vinyl acetal) resin, a plasticizer and at least one UV absorber, wherein the ultraviolet absorber comprises structure (1)

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Provided is an interlayer film for laminated glass which produces a high contrast image under light radiation, is less susceptible to color changes, and allows for control of the adhesion, as well as a laminated glass including the interlayer film. The interlayer film includes a light emitting layer containing a polyvinyl acetal, a light emitting material having a terephthalic acid ester structure, and a potassium salt.

There is provided laminated glass which is high in heat shielding properties. The laminated glass according to the present invention is provided with a first laminated glass member, a second laminated glass member and an interlayer film arranged between the first and second laminated glass members; the interlayer film is provided with an infrared ray reflection layer which reflects infrared rays, a first resin layer which is arranged on a first surface side of the infrared ray reflection layer and contains a thermoplastic resin, and a second resin layer which is arranged on a second surface side of the infrared ray reflection layer and contains a thermoplastic resin; and the infrared ray transmittance in the wavelength of 780 to 2100 nm of the whole layer composed of the first laminated glass member and the first resin layer is higher than the infrared ray transmittance in the wavelength of 780 to 2100 nm of the whole layer composed of the first laminated glass member and the second resin layer.