The present invention aims to provide an interlayer film for a laminated glass capable of exhibiting high deaeration properties in a vacuum deaeration method and enabling production of a highly transparent laminated glass, and a laminated glass including the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass, having a large number of recesses on at least one surface, the recesses each having a groove shape with a continuous bottom and being regularly adjacent and parallel to each other, the recesses each having a radius of rotation R of a bottom of the groove shape with a continuous bottom of 45 μm or less.

Provided is an interlayer film for laminated glass that can improve bending rigidity and sound insulating properties of laminated glass and can inhibit the occurrence and growth of foam in the laminated glass. 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 a glass transition temperature of the first layer is 10° C. or lower, and an elastic modulus of the first layer at 30° C. is 285,000 Pa or greater.

The present invention aims to provide an interlayer film for a laminated glass capable of exhibiting high deaeration properties in a vacuum deaeration method and enabling production of a highly transparent laminated glass, and a laminated glass including the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass, having a large number of recesses on at least one surface, the recesses each having a groove shape with a continuous bottom and being regularly adjacent and parallel to each other, the recesses each having a radius of rotation R of a bottom of the groove shape with a continuous bottom of 45 μm or less.

Provided is a laminated glass where multiple glass sheets are joined via an interlayer film [J], wherein i) mean density of the laminated glass is 1.2-1.5 g/cm.sup.3 at 25° C., ii) the interlayer film [J] has layered structure comprising at least two adhesive layers [G], comprising an adhesive mainly containing a thermoplastic elastomer having an alkoxysilyl group [F]; and at least one rigid resin layer [H] positioned therebetween, iii) storage modulus of the rigid resin layer [H] is higher than that of the adhesive layer [G], iv) storage modulus of the interlayer film [J] calculated from a formula 1 or measured is 2.0×10.sup.8-1.0×10.sup.9 Pa at −20° C. and 1.0×10.sup.8-8.0×10.sup.8 Pa at 40° C.,
G′=(Σ.sub.it.sub.i)/(Σ.sub.i(t.sub.i/G′.sub.i))  (1) where G′: calculated storage modulus of the interlayer film, G′.sub.i: storage modulus of an i-th layer of the interlayer film, t.sub.i: thickness of the i-th layer, Σ.sub.i: sum of numerical values of the i-th layer.

There is provided an interlayer film for laminated glass making a gap difficult to be generated at an end part of the sheet of laminated glass and enabling an increase in the YI value measured at the end part of the sheet of laminated glass to be suppressed. The interlayer film for laminated glass according to the present invention has a one-layer structure or a two or more-layer structure, and the interlayer film for laminated glass according to the present invention includes a polyvinyl acetal resin, a plasticizer, a hindered amine light stabilizer, an oxidation inhibitor having a sulfur atom, and an oxidation inhibitor having a phenol skeleton which is different from the oxidation inhibitor having a sulfur atom.

Provided is an interlayer film for laminated glass capable of effectively enhancing the sound insulating property at 6300 Hz while effectively preventing deterioration in sound insulating property at 3150 Hz in laminated glass. An interlayer film for laminated glass according to the present invention has a one-layer structure or a two or more-layer structure and includes a resin layer containing a resin and a plasticizer. The interlayer film has a resonance frequency X of 550 Hz or more and 740 Hz or less, a loss factor Y in a secondary mode of 0.35 or more, and satisfies a formula: Y>0.0008X−0.142 in a measurement of resonance frequency in a secondary mode in a damping test for laminated glass according to a central exciting method of laminated glass, when the laminated glass is obtained by arranging the interlayer film between two glass plates of 25 mm wide, 300 mm long and 2 mm thick.

There is provided an interlayer film for laminated glass with which the haze value of laminated glass can be lowered and the releasability of a lamination glass member from the interlayer film can be made moderately high. The interlayer film for laminated glass according to the present invention is a single-layered interlayer film provided with only a first layer or is a multi-layered interlayer film provided with a first layer and another layer, the first layer contains no magnesium or contains magnesium in a content of 50 ppm or less and the first layer contains a phosphorus compound having a polyoxyalkylene group or a silane compound having a polyoxyalkylene group, the first layer contains heat shielding particles in the case of the interlayer film provided with only the first layer, and at least one layer in the interlayer film contains heat shielding particles in the case of the interlayer film provided with the first layer and another layer.

Provided is a sodium-neutralized ethylene acid copolymer ionomer composition containing a specified silane additive in a specified amount and having enhanced adhesion properties to glass, a masterbatch composition suitable for producing such ionomer composition, an interlayer made from such ionomer composition, and a glass laminate comprising such interlayer.

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/m.sup.2 at a black panel temperature of 83° C. and a humidity of 50% RH for 144 hours, and dipping the laminated glass in pure water at 80° 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.

The present invention relates to a laminate structure comprising an adhesive polymeric interlayer (API) that comprises discrete zones. Such discrete zones are located at the interface of the API and the glass substrate. Generally, the discrete zones comprise two sets of discrete zones, debonding and adhesive. These zones allow for a unique combination of modified API-glass debonding, laminate toughness, and laminate durability. Various spatial patterns and densities of debonding are described, as well as the resulting material properties.