Sekisui Chemical Co., Ltd.

Moyuru Okano

Shougo Yoshida

Kazuhiko Nakayama

Manabu Matsumoto

Jun Sasaki

Yoshikazu Masuyama

Atsushi Nohara

Provided is an interlayer film for laminated glass capable of preventing generation of a void in the interlayer film in an end part of laminated glass. The interlayer film for laminated glass according to the present invention has a lengthwise direction and a widthwise direction, and includes the following configuration A, the configuration B or the configuration C. Configuration A: containing a light stabilizer, and having such a distribution in content of the light stabilizer in the widthwise direction that the content of the light stabilizer is larger in one end side of the widthwise direction. Configuration B: containing an ultraviolet ray screening agent, and having such a distribution in content of the ultraviolet ray screening agent in the widthwise direction that the content of the ultraviolet ray screening agent is larger in one end side of the widthwise direction. Configuration C: containing an oxidation inhibitor, and having such a distribution in content of the oxidation inhibitor in the widthwise direction that the content of the oxidation inhibitor is larger in one end side of the widthwise direction.

Interlayer for laminated glass, and laminated glass

Provided is a laminated glass capable of preventing scorching in an end part of the laminated glass. A laminated glass according to the present invention is a laminated glass including a first glass plate, a second glass plate, and an interlayer film, at least one of the first glass plate and the second glass plate being a heat ray absorbing plate glass conforming to JIS R3208:1998, each of the first glass plate and the second glass plate having a thickness of 1.9 mm or less, when a layer having a lowest glass transition temperature in the interlayer film being referred to as a layer X, the layer X containing a thermoplastic resin, a ratio of a weight average molecular weight of the thermoplastic resin in the layer X before the light irradiation test, to a weight average molecular weight of the thermoplastic resin in the layer X after the light irradiation test being 2 or less.

Laminated glass

Provided is a laminated glass capable of preventing breakage in an end part of the laminated glass under external impact. A laminated glass according to the present invention is a laminated glass including a first glass plate, a second glass plate, and an interlayer film, the interlayer film being arranged between the first glass plate and the second glass plate, the laminated glass having a portion where a lateral surface of the interlayer film is exposed, and a ratio of a weight of broken glass pieces determined by a ball drop test in a laminated glass after a dipping-light irradiation test, to a weight of broken glass pieces determined by the ball drop test in a laminated glass not having undergone the dipping-light irradiation test being 2.5 or less.

Provided is laminated glass capable of preventing generation of a projection in the interlayer film in an end part of laminated glass, and keeping the appearance of laminated glass excellent. Laminated glass according to the present invention is laminate glass including a first lamination glass member, a second lamination glass member, and an interlayer film containing a thermoplastic resin, and when a light irradiation test: 'conducting 4 cycles each cycle including the process of irradiating the laminated glass with xenon light at a black panel temperature of 83&#xb0; C. and a humidity of 50% RH for 144 hours, and dipping the laminated glass in pure water at 80&#xb0; C. for 24 hours' is conducted in the laminated glass, a ratio of a weight average molecular weight of the thermoplastic resin at a position of 2 mm inwardly from an end part of the laminated glass, to a weight average molecular weight of the thermoplastic resin at a position of 70 mm inwardly from an end part of the laminated glass is more than 0.5.

Provided is laminated glass capable of preventing generation of a void in the interlayer film in an end part of laminated glass, and keeping the appearance of laminated glass excellent. Laminated glass according to the present invention is laminate glass including a first lamination glass member, a second lamination glass member, and an interlayer film containing a thermoplastic resin, and no void is generated in the interlayer film irradiated with light in an end part of the laminated glass after a first light irradiation test: 'conducting 4 cycles each cycle including the process of irradiating the laminated glass with xenon light 180 W/mat a black panel temperature of 83&#xb0; C. and a humidity of 50% RH for 144 hours, and dipping the laminated glass in pure water at 80&#xb0; C. for 24 hours', or a void is generated within a length of 1 mm or less inwardly from an end part of the interlayer film irradiated with light in the end part of the laminated glass after the first light irradiation test.

Provided is laminated glass capable of preventing occurrence of discoloration in the interlayer film in an end part of laminated glass, and keeping the appearance of laminated glass excellent. Laminated glass according to the present invention is laminate glass including a first lamination glass member, a second lamination glass member, and an interlayer film containing a thermoplastic resin, in which no discoloration occurs in the interlayer film irradiated with light in an end part of the laminated glass after a light irradiation test: 'the laminated glass is irradiated with xenon light at a black panel temperature of 83&#xb0; C., a temperature inside the vessel of 50&#xb0; C. and a humidity of 50% RH for 2000 hours', or discoloration occurs within a length of 1 mm or less inwardly from an end part of the interlayer film irradiated with light in the end part of the laminated glass after the light irradiation test.

There is provided an interlayer film for laminated glass with which discoloration in the colored part can be suppressed. An interlayer film () for laminated glass according to the present invention has a colored part (X) that is colored in plan view, and a non-colored part (Y) that is not colored in plan view; the interlayer film does not contain or contains a light stabilizer in the colored part; the interlayer film contains a light stabilizer in the non-colored part; and a content of the light stabilizer in the entire non-colored part is larger than a content of the light stabilizer in the entire colored part.

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Kouka, Japan

Moyuru Okano