Interlayers for laminated glass, laminated glass and glass

Abstract

This invention provides an interlayer film for laminated glass that can be given a high level of aesthetic appeal through its granular texture. [Solution] An interlayer for laminated glass comprising a thermoplastic resin and a filler (A), wherein the granularity value (G value) of the interlayer for laminated glass is 1.5 or more and 15 or less.

Description

Technical Field

[0001] The present invention relates to an interlayer film for laminated glass, laminated glass having the interlayer film for laminated glass, and glass.

Background Art

[0002] Laminated glass is widely used for window glass of various vehicles such as automobiles and window glass of buildings because even if it is damaged by an external impact, glass fragments are less likely to scatter and it is safe. As laminated glass, an integrated product in which an interlayer film for laminated glass containing a resin component such as polyvinyl acetal resin is interposed between a pair of glasses is widely known.

[0003] The interlayer film for laminated glass is required to impart various functions. For example, it is known from Patent Documents 1 to 3 that metal oxides are blended as heat ray shielding agents. In addition, in recent years, the interlayer film for laminated glass may be required to have design properties. For example, as disclosed in Patent Documents 4 and 5, metal-based pigments may be blended as coloring agents. Patent Documents 4 and 5 show metal oxide-coated mica and the like as an example of the metal-based pigment.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Summary of the Invention

Problems to be Solved by the Invention

[0005] As disclosed in Patent Documents 1 to 5, various particles are incorporated into the interlayer for laminated glass as heat shielding agents and colorants. However, conventionally, in order to ensure the transparency of the interlayer for laminated glass, the particles are generally made small enough to be invisible. On the other hand, in recent years, the designs of windows in automobiles and buildings have become increasingly diverse. For example, there is a demand for a variety of expressions in automobiles, and there is a growing interest in providing high design quality through concepts different from the conventional interlayer formulation design for laminated glass.

[0006] This invention has been made in view of the above circumstances, and aims to provide an interlayer for laminated glass, laminated glass, and glass that are given high design quality. [Means for solving the problem]

[0007] As a result of diligent research, the inventors have discovered that by setting the granularity value (G value) above a certain level in an interlayer for laminated glass containing a thermoplastic resin and a filler, a high level of design appeal with a dazzling, granular texture can be imparted, and have completed the present invention as described below. The present invention provides the following [1] to

[17] . [1] An interlayer for laminated glass comprising a thermoplastic resin and a filler (A), An interlayer for laminated glass, wherein the granularity value (G value) of the laminated glass produced by bonding two clear glass plates together via the aforementioned interlayer for laminated glass is 1.5 or more and 15 or less. [2] The interlayer film for laminated glass according to [1] above, wherein the average particle size of the filler (A) is 5 μm or more and 250 μm or less. [3] The interlayer film for laminated glass according to [2] above, wherein the average particle size of the filler (A) is 5 μm or more and 100 μm or less. [4] The interlayer for laminated glass according to any one of the above [1] to [3], wherein the content of filler (A) in the interlayer for laminated glass is 0.01% by mass or more and 0.5% by mass or less. [5] An interlayer for laminated glass according to any one of the above [1] to [4], wherein the filler (A) is lustrous. [6] An interlayer for laminated glass according to any one of the above [1] to [5], wherein the filler (A) contains a metal oxide. [7] The interlayer film for laminated glass according to any one of the above [1] to [6], wherein the filler (A) contains at least one from the group consisting of titanium oxide, silicon oxide, indium oxide, niobium oxide, zinc oxide, antimony oxide, tungsten oxide, aluminum oxide, mica, and glass. [8] The laminated glass interfilm according to any one of the above [1] to [7], wherein the refractive index of the filler (A) is A, and the refractive index of the resin that is most abundant by mass in the laminated glass interfilm is B, and the formula (1) is satisfied. |AB|≧0.5 (1) [9] An interlayer for laminated glass according to any one of the above items [1] to [8], comprising a coloring agent.

[10] The interlayer for laminated glass according to any one of the above [1] to [9], wherein the haze of the laminated glass produced by bonding two clear glass plates together via the interlayer for laminated glass is 0.5% or more and 20% or less.

[11] An interlayer for laminated glass according to any one of the above [1] to

[10] , wherein C is the luminous intensity (Si value) at an incident angle of 45° and D is the luminous intensity (Si value) at an incident angle of 75°, with respect to laminated glass made by bonding two clear glass plates together via the interlayer for laminated glass, and has one or more surfaces that satisfy equation (2). |CD|≧0.01 (2)

[12] The laminated glass interlayer according to any one of the above [1] to

[11] , wherein the laminated glass, which is made by bonding two clear glass plates together via the laminated glass interlayer, has at least one surface on which the visible light reflectance (Rv) is 5% or more.

[13] A first glass member, a second glass member, and an interlayer film for laminated glass according to any one of the above [1] to

[12] , A laminated glass in which the interlayer film for laminated glass is disposed between the first glass member and the second glass member.

[14] Glass having a granularity value (G value) of 1.5 or more.

[15] A first glass member, a second glass member, and an interlayer film for laminated glass, The interlayer film for laminated glass is disposed between the first glass member and the second glass member, A laminated glass having a granularity value (G value) of 1.5 or more and 15 or less.

[16] The laminated glass according to

[15] above, in which the interlayer film for laminated glass is colored.

[17] The laminated glass according to

[15] or

[16] above, in which the granularity value (G value) of the first glass member is 1.5 or more and the second glass member is colored glass.

Advantages of the Invention

[0008] According to the present invention, it is possible to provide an interlayer film for laminated glass, a laminated glass, and a glass that can impart high design quality due to the granular feeling.

Brief Description of the Drawings

[0009] [Figure 1] It is a schematic cross-sectional view showing a flat plate-shaped filler (A) having a laminated structure. [Figure 2] It is a schematic cross-sectional view showing an example of an interlayer film for laminated glass.

Modes for Carrying Out the Invention

[0010] <Interlayer film for laminated glass> Hereinafter, the present invention will be described in more detail. The interlayer film for laminated glass of the present invention (hereinafter sometimes simply referred to as "this interlayer film") contains a thermoplastic resin and filler (A), and the granularity value (G value) of the laminated glass produced by bonding two clear glass plates through this interlayer film is 1.5 or more and 15 or less. By having the above configuration, this interlayer film has a high design property with a glittery feeling due to the granular feeling of filler (A).

[0011] [Granularity value (G value)] As described above, the granularity value (G value) of this interlayer film is 1.5 or more and 15 or less. If the G value is less than 1.5, the granular feeling becomes insufficient and it becomes difficult to enhance the design property. On the other hand, if it is higher than 15, the granular feeling is too strong and the appearance becomes poor. Also, there is a possibility that the particle size of filler (A) becomes too large and the transparency of this interlayer film is impaired. From the viewpoint of strengthening the granular feeling and imparting a more distinctive design property, the granularity value (G value) is preferably 1.7 or more, more preferably 2 or more, further preferably 2.5 or more, and even more preferably 5 or more. Also, from the viewpoint of making the granular feeling moderate and achieving a refined design, it is preferably 12 or less, and more preferably 10 or less.

[0012] Incidentally, the granularity value (G value) can be made within the above-mentioned predetermined range by appropriately adjusting the type of filler (A) and the particle size of filler (A), etc. Also, the granularity value (G value) is obtained by observing one surface of the laminated glass produced by bonding two clear glass plates through this interlayer film vertically. At this time, it is preferable to use the laminated glass produced under the conditions described in the examples. Also, as the clear glass plate, a reference clear glass plate may be used.

[0013] Furthermore, the granularity value (G value) may be calculated as follows: the granularity value (G value) measured from either side of the interlayer film should be within the above range; however, the granularity value (G value) measured from both the one side and the other side (the side opposite to the one side) may be within the above range. Also, if the granularity value (G value) measured from one side is within the above range, the granularity value (G value) measured from the other side may be the same as the granularity value (G value) measured from one side, or it may be lower than the granularity value (G value) measured from one side. Preferably, one of the above-mentioned surfaces is positioned on the outdoor side (outside the vehicle in the case of an automobile) in the case of a window pane, and the other surface is positioned on the indoor side (inside the vehicle in the case of an automobile). Having one surface on the outdoor side makes the appearance when viewed from the outside (outside the vehicle in the case of an automobile) unique and highly aesthetically pleasing, allowing the highly aesthetically pleasing window pane to be showcased to the outside.

[0014] If the granularity value (G value) measured from the other side is lower than the granularity value (G value) measured from the one side, the granularity value (G value) measured from the other side may be less than 1.5. If the granularity value (G value) measured from the other side is set to less than 1.5, the laminated glass will have a distinctive appearance due to its granular texture when viewed from one side, while appearing largely the same as ordinary laminated glass when viewed from the other side. Therefore, for example, it is possible to create a distinctive appearance when viewed from the outside (outside the car in the case of automobiles), while giving a more subdued impression when viewed from the inside (inside the car in the case of automobiles), making it easier to further enhance the aesthetic appeal. If the granularity value (G value) measured from the other side is less than 1.5, it may be further reduced to give a more subdued impression, with 1 or less being more preferable, and 0.7 or less being even more preferable. The lower limit of the granularity value (G value) measured from the other side is not particularly limited; for example, it may be 0, but in practice, 0.1 is also acceptable. Furthermore, as described above, in order to make the granularity value (G value) measured from the other side lower than the granularity value (G value) measured from one side, it is advisable to place a colored layer on the other side of the filler-containing layer, separate from the filler-containing layer described later.

[0015] In this specification, the standard clear glass plate has a thickness of 2 mm and a visible light transmittance of 90.5% as measured in accordance with JIS R 3106:1998. Furthermore, the clear glass plate has a*=-0.5, b*=0.2, and a haze of 0.2% or less, obtained using the CIE standard illuminant D65 and 10° field-of-view color matching functions as specified in JIS Z 8781-1(2012), JIS Z 8781-2(2012), and JIS Z 8781-4(2013).

[0016] [Luminous intensity (Si)] The interlayer preferably has one or more surfaces that satisfy the following equation (2), where C is the bright intensity (Si) at an incident angle of 45° and D is the bright intensity (Si) at an incident angle of 75°. |CD|≧0.01 (2) This interlayer, with a |CD| value of 0.01 or higher, easily achieves a metallic appearance. Therefore, it is easier to create an appearance that possesses both granularity and metallicity, further enhancing its design appeal. The luminous intensity (Si) was measured from both the front and back sides of a laminated glass made by bonding two clear glass plates together via this interlayer. Here, the surface that satisfies equation (2) is preferably one of the surfaces whose granularity value (G value) is measured to be between 1.5 and 15. With such a configuration, both granularity and metallicity can be imparted to the appearance of the laminated glass when viewed from one side. Furthermore, a standard clear glass plate may be used as the clear glass plate. Similarly, when using the various optical properties such as haze and Rv described later, a standard clear glass plate may be used as the clear glass plate.

[0017] From the viewpoint of enhancing the design by giving a strong metallic feel with this interlayer, the above-mentioned |CD| value is preferably 0.15 or higher, more preferably 0.2 or higher, even more preferably 0.8 or higher, and even more preferably 1.5 or higher. From the viewpoint of giving a calm impression without giving an overly strong metallic feel, the |CD| value is preferably 45 or lower, more preferably 20 or lower, even more preferably 10 or lower, and even more preferably 5 or lower.

[0018] The |CD| value measured from the other side may be the same as the |CD| value measured from the one side, or it may be lower than the |CD| value measured from the one side. If the |CD| value measured from the other side is lower than the value measured from the one side, the difference is preferably 0.1 or more, more preferably 0.2 or more, and also preferably 1 or more. By setting the difference in |CD| values ​​to a certain level or higher, it is possible to give a strong metallic feel to the appearance visible from one side (e.g., the outdoor side) while suppressing the metallic feel to the appearance visible from the other side (e.g., the indoor side), resulting in a more subdued impression. The above difference in |CD| values ​​is not particularly limited, but it is preferably 20 or less, and more preferably 10 or less.

[0019] [Visible light reflectance (Rv)] Preferably, this interlayer has at least one surface with a visible light reflectance (Rv) of 5% or more. By having a surface with a visible light reflectance (Rv) of 5% or more, this interlayer can have a metallic appearance. Therefore, it is possible to have an appearance that has both a granular and metallic feel, which further enhances the design appeal.

[0020] The visible light reflectance (Rv) is obtained by measuring it from both the front and back sides of the laminated glass, which is made by bonding two clear glass plates together with this interlayer film in between. Ideally, the visible light reflectance (Rv) of at least one of the measured sides should be 5% or higher, but it is also desirable that the visible light reflectance (Rv) measured on the side where the granularity value (G value) is between 1.5 and 15 is 5% or higher. With such a configuration, when the laminated glass is viewed from one side, it is possible to achieve an appearance that has both a granular and metallic feel.

[0021] From the viewpoint of enhancing the metallic feel, the visible light reflectance (Rv) on at least one side is more preferably 8% or more, even more preferably 10% or more, and even more preferably 13% or more. Furthermore, from the viewpoint of ensuring transparency, the visible light reflectance (Rv) on a surface where (Rv) is measured to be 5% or more is preferably 30% or less, preferably 25% or less, more preferably 20% or less, and even more preferably 18% or less. The visible light reflectance (Rv) can be measured using a spectrophotometer in accordance with JIS 3106 (2019).

[0022] [Hayes] The interlayer preferably has a haze (Hz) of 20% or less. A haze (Hz) of 20% or less suppresses light scattering, resulting in higher transparency and making it easier to obtain laminated glass with less clouding. The above haze (Hz) is more preferably 15% or less, and even more preferably 10% or less. From the viewpoint of ensuring transparency and suppressing clouding, the lower the haze (Hz) of the interlayer, the better, and it is sufficient if it is 0% or more, but practically, it is preferable to be 0.5% or more.

[0023] The haze (Hz) was measured on laminated glass made by bonding two clear glass plates together with this interlayer film. Furthermore, when measuring haze (Hz), it is preferable to use the value measured from the opposite side (the other side) from the side where the granularity value (G-value) is measured to be between 1.5 and 15. However, if the granularity value (G-value) measured from both sides is the same, the haze (Hz) can be measured from any side. Also, if the granularity value (G-value) measured from both sides is between 1.5 and 15, or outside the range of 1.5 and 15, it is preferable to use the haze value measured from the side opposite to the side with the higher granularity value (G-value). Haze can be measured in accordance with JIS K6714.

[0024] (Filler (A)) The filler (A) used in the present invention may be a filler having one of the following: a metal, a metal oxide, or a nonmetallic material. The filler (A) may be dispersed in the resin constituting the interlayer. The filler (A) preferably has a particle size that allows the granularity value (G value) to fall within the predetermined range described above. Specifically, the average particle size (D50) of the filler (A) is preferably 5 μm or more and 250 μm or less. A D50 of 5 μm or more allows for a larger granularity value (G value), making it possible to create a granular texture and also making it easier to create a metallic texture. Furthermore, by setting the D50 to 250 μm or less, it becomes easier to ensure that the granularity value (G value) remains below a certain value, preventing the granular texture from becoming too strong, resulting in an unattractive appearance or reduced transparency.

[0025] The average particle size (D50) of filler (A) is more preferably 5 μm or larger, even more preferably 18 μm or larger, and even more preferably 40 μm or larger, from the viewpoint of easily producing a granular and metallic appearance. Furthermore, from the viewpoint of ensuring a moderate granular appearance while easily improving transparency, filler (A) is more preferably 200 μm or smaller, even more preferably 100 μm or smaller, and even more preferably 90 μm or smaller. The average particle size (D50) is the value measured using a laser diffraction / scattering particle size distribution analyzer, and the value (D50) when the cumulative volume is 50% is defined as the average particle size.

[0026] Examples of metals in filler (A) include aluminum, silver, copper, platinum, gold, titanium, nickel, tin, tin-cobalt alloy, indium, and chromium. Examples of metal oxides include titanium oxide, silicon oxide, aluminum oxide, indium oxide, niobium oxide, zinc oxide, antimony oxide, and tungsten oxide. Examples of nonmetallic materials include inorganic compounds other than metals and metal oxides, specifically glass and mica. Mica may be natural mica or synthetic mica.

[0027] Filler (A) is preferably a lustrous filler, i.e., a lustrous agent. The presence of a lustrous agent in filler (A) makes it easier to achieve a metallic appearance. Furthermore, filler (A) is preferably a filler (A) containing a metal oxide or a non-metallic material, and more preferably a filler (A) containing a metal oxide. The inclusion of a metal oxide compound in filler (A) makes it easier to achieve lustrousness and a metallic appearance. Additionally, the inclusion of a metal oxide in filler (A) increases the granularity value (G value), making it easier to achieve a granular appearance.

[0028] The filler (A) is preferably a filler containing two or more compounds in each particle, and preferably a filler containing two or more metal oxides in each particle, or a filler containing a metal oxide and a non-metallic material such as mica or glass in each particle. Using these fillers makes it easier to increase the granularity value (G value) and create a granular texture. Among the above, a filler containing two or more metal oxides in each particle is more preferable from the viewpoint of easily creating a granular texture and metallic texture. Furthermore, from the viewpoint of easily creating a granular texture and metallic texture, especially a granular texture, a filler in which each particle contains a metal oxide and glass is also preferable.

[0029] In each particle, the filler containing two or more compounds preferably has a multilayer structure. Specifically, this includes fillers having a multilayer structure of two or more metal oxides, fillers having a multilayer structure of a metal oxide and mica, and fillers having a multilayer structure of a metal oxide and glass. Among these, filler (A) is more preferably a filler having a multilayer structure of two or more metal oxides, or a filler having a multilayer structure of a metal oxide and glass.

[0030] In a multilayer structure of metal oxides, it is preferable that two or more metal oxides have different refractive indices. The formation of layers with different refractive indices by metal oxides with different refractive indices facilitates reflection between layers, making it easier to achieve a suitable metallic and granular texture. Furthermore, in a filler having a multilayer structure of metal oxides, it is preferable that the layers formed by metal oxides with different refractive indices are adjacent to each other. The refractive index difference between metal oxides with different refractive indices is preferably 0.1 to 1.2 from the viewpoint of improving transparency, granularity, and metallicity. The refractive index difference is more preferably 0.3 to 1.1, and even more preferably 0.6 to 1.05.

[0031] In a filler (A) having a multilayer structure of two or more metal oxides, the thickness ratio between layers formed by different metal oxides is preferably 1:2 to 1:30. Filler (A) is more likely to have a metallic appearance when it has such a thickness ratio. The above thickness ratio is more preferably 1:3 to 1:20, and even more preferably 1:4 to 1:15. The thickness ratio is the average value of values ​​measured by observing any 50 particles with a scanning electron microscope (SEM) or the like.

[0032] The two or more metal oxides are preferably selected from the group consisting of titanium oxide, silicon oxide, indium oxide, niobium oxide, zinc oxide, antimony oxide, tungsten oxide, and aluminum oxide, and among these, selection from titanium oxide, silicon oxide, and aluminum oxide is preferable. Titanium oxide is titanium dioxide (TiO2), and may be rutile, anatase, or brookite. Silicon oxide is silicon dioxide (SiO2). Aluminum oxide may be alumina. The filler (A) is preferably a multilayer metal oxide particle formed from two or more metal oxides as described above, and is preferably a particle in which a metal oxide layer (substrate) formed from at least one metal oxide is coated with at least one metal oxide (coating layer). It is preferable that the at least one metal oxide in the substrate and the coating layer be of different types. Specifically, filler (A) more preferably contains both titanium oxide and silicon oxide, and preferably has a multilayer structure of a titanium oxide layer and a silicon oxide layer. Filler (A) also preferably has a multilayer structure of an aluminum oxide layer and a metal oxide compound layer containing a metal oxide other than aluminum oxide.

[0033] The filler (A), having a multilayer structure of metal oxide and glass, may be formed from glass and a metal oxide selected from the group consisting of titanium oxide, silicon oxide, indium oxide, niobium oxide, zinc oxide, antimony oxide, and tungsten oxide. Among these, titanium oxide, silicon oxide, or both are preferred as the metal oxide. The filler (A) having a multilayer structure of metal oxide and glass is more preferably a multilayer structure of a glass layer and a metal oxide layer, and in particular, the substrate made of glass is preferably particles coated with a metal oxide (preferably titanium oxide, silicon oxide, or both).

[0034] A filler (A) having a multilayer structure of metal oxide and mica is preferably formed from mica and a metal oxide selected from the group consisting of titanium oxide, silicon oxide, indium oxide, niobium oxide, zinc oxide, antimony oxide, and tungsten oxide, with titanium oxide being preferred among these metal oxides. A filler (A) having a multilayer structure of metal oxide and mica is more preferably a multilayer structure of a mica layer and a metal oxide layer, and in particular, it is preferable that the substrate constituting the mica is a particle coated with a metal oxide (preferably titanium oxide). A filler (A) having a multilayer structure of metal oxide and mica or glass can produce a metallic feel due to reflection between layers and on the surface.

[0035] The shape of filler (A) can be any of the following: spherical, polygonal (such as a quadrangular prism), pyramidal (such as a triangular pyramidal or square pyramidal), cylindrical, conical, irregular, needle-shaped, fibrous, or flat. However, a flat shape is preferred. By having a flat shape, filler (A) can be oriented along the plane direction of the interlayer as described later, which makes it easier to reflect a certain amount of incident visible light while improving the transparency of the interlayer. In addition, the regular reflection reduces light scattering, making it easier to reduce the haze of the laminated glass.

[0036] When the flat-shaped filler (A) has the multilayer structure described above, it is preferable that multiple layers are provided along the thickness direction, preferably 2 to 5 layers, more preferably 2 to 4 layers, and even more preferably 3 layers along the thickness direction. In a multilayer filler, the reflected light generated by the interfaces between each layer and the reflection from the filler surface interferes and emits various colors. For example, by changing the thickness of the surface layer of the multilayer structure (for example, the coating layer 11 described later), the color of the reflected light from each filler can be changed.

[0037] A specific example of a three-layered, flat-plate-shaped filler (A) is shown in Figure 1. When filler (A) has a three-layer structure, it is preferable to have an intermediate layer (base material) 10 and coating layers 11 and 12 provided on both sides of the intermediate layer (base material) 10, as shown in Figure 1. The filler shown in Figure 1 may, for example, have a multilayer structure of metal oxides, and the metal oxides forming each coating layer 11 and 12 may be different from the metal oxide forming the intermediate layer 10. It is preferable that the metal oxides forming the coating layers 11 and 12 are the same as each other. It is preferable that the refractive index of the metal oxide forming each coating layer 11 and 12 is higher than that of the middle layer 10. By making the refractive index of the coating layers 11 and 12 relatively higher, light is transmitted while reflecting appropriately, making it easier to achieve good transparency and metallic appearance. Furthermore, with a three-layer structure and the refractive index of the metal oxide in the coating layers 11 and 12 being higher than that of the middle layer 10, light is reflected appropriately regardless of whether it is incident from either of the two surfaces, so a metallic appearance can be more effectively achieved while ensuring transparency. The preferred value for the difference in refractive index between the coating layers 11 and 12 and the middle layer 10 is as described above. Furthermore, it is preferable that the thickness of each coating layer 11 and 12 is smaller than the thickness of the middle layer 10. The specific preferred values ​​for the thickness ratio (each coating layer:middle layer) are as shown in the thickness ratio between layers.

[0038] In a flat plate-shaped filler (A) having a multilayer structure of metal oxides, it is particularly preferable that the coating layers 11 and 12 are both titanium oxide layers, and the middle layer 10 is a silicon oxide layer. Furthermore, in a flat-plate-shaped filler (A) having a multilayer structure of metal oxide and glass or mica, it is preferable that the coating layers 11 and 12 are metal oxide layers formed by metal oxide, and the middle layer 12 is glass or mica. In this case, it is preferable that the middle layer 12 is glass. The glass may be glass flakes or the like. Furthermore, the flat-shaped filler (A) is not limited to having the three-layer structure described above, but may have a two-layer structure, in which case one of the coating layers 11 and 12 may be omitted. It may also have a multilayer structure of four or more layers.

[0039] The thickness of filler (A) is preferably 0.01 μm to 4 μm, more preferably 0.1 μm to 3.5 μm, and even more preferably 0.2 μm to 3 μm, from the viewpoint of ensuring transparency and easily producing a metallic appearance. The thickness of filler (A) is the average value of values ​​measured by observing any 50 particles with a scanning electron microscope (SEM) or the like. The thickness of filler (A) is preferably the length in the direction perpendicular to the longitudinal direction of the filler in which the maximum value is shortest, and in Figure 1, the thickness of a flat plate-shaped filler (A) is the length in the vertical direction.

[0040] The aspect ratio of filler (A) is preferably 1 or more, more preferably 1.1 or more, even more preferably 1.2 or more, and also preferably 50 or less, more preferably 30 or less, even more preferably 15 or less, and even more preferably 10 or less. The above aspect ratio makes it easier to create a metallic feel while maintaining good transparency. Furthermore, as described later, by oriented filler (A) along the plane direction of the interlayer, it becomes easier to reflect a certain amount of incident visible light while further improving the transparency of the interlayer. In addition, by setting the aspect ratio to 50 or less, it is possible to prevent the average particle size (D50) of filler (A) from becoming unnecessarily large. The aspect ratio of filler (A) is the ratio of the length of the major axis to the length of the minor axis of filler (A) as observed by scanning electron microscopy. The major axis and minor axis refer to the major axis and minor axis of filler (A) when viewed in plan along the thickness direction, and in the case of a flat plate-shaped filler, it means the longitudinal direction and the direction perpendicular to it in the plane direction.

[0041] When filler (A) has an orientable anisotropy, such as when it has a flat plate shape, it is preferable that its longitudinal direction is oriented along the plane direction of the interlayer. Furthermore, when filler (A) has a flat plate shape, it is preferable that the plane direction of filler (A) is oriented along the plane direction of the interlayer. In other words, for a flat plate-shaped filler (A), it is preferable that the thickness direction of filler (A) is oriented along the thickness direction of the interlayer. Filler (A) having the above orientation can appropriately reflect and partially transmit light traveling along the thickness direction in the interlayer, and can also suppress light scattering generated by filler (A). Therefore, it becomes easier to reduce haze and improve transparency. In this interlayer, filler (A) may be used alone, or two or more types of filler (A) may be used in combination.

[0042] The method for manufacturing filler (A) is not particularly limited. For example, filler (A) having a multilayer structure may be manufactured by coating particles formed from a metal oxide with another metal oxide, or by coating particles formed from mica or glass with a metal oxide. Alternatively, a sheet formed from a metal oxide may be coated with another metal oxide and then crushed to form a flat plate-shaped filler (A). Commercially available fillers (A) may also be used.

[0043] Furthermore, it is preferable that the filler (A) satisfies the following equation (1) when its refractive index is A and the refractive index of the resin with the highest mass content in this interlayer is B. |AB|≧0.5 (1) By making the difference between the refractive index of filler (A) and the refractive index of the resin greater than a certain level, reflection is more likely to occur at the interface between filler (A) and the resin, making it easier to produce a metallic appearance. The refractive index of filler (A) refers to the refractive index at the surface of filler (A), and if filler (A) has a coating layer as described above, it refers to the refractive index of the coating layer. The above |AB| is more preferably 0.5 or greater, and even more preferably 1 or greater. The above |AB| is not particularly limited in terms of upper limit, but for example, it may be 10 or less.

[0044] The content of filler (A) in this interlayer is preferably 0.01% by mass or more and 0.5% by mass or less. When the content of filler (A) is 0.01% by mass or more, a moderate granular texture and metallic feel can be produced. Furthermore, by setting it to 0.5% by mass or less, excessive reflection of light is prevented, reducing haze and making it easier to ensure transparency of the laminated glass. The content of filler (A) is more preferably 0.02% by mass or more, even more preferably 0.03% by mass or more, even more preferably 0.04% by mass or more, even more preferably 0.4% by mass or less, even more preferably 0.3% by mass or less, and even more preferably 0.2% by mass or less. The filler (A) content in this interlayer refers to the filler (A) content relative to the entire thickness of the interlayer, regardless of whether the interlayer has a single-layer or multi-layer structure. Furthermore, while the filler (A) content may differ from region to region of the interlayer, it is sufficient that the above content is achieved in at least a region of a certain size (for example, a 5cm x 5cm region, hereinafter also referred to as the "predetermined region").

[0045] Furthermore, the interlayer film includes one or more resin layers, and it is preferable that at least one of the resin layers contains filler (A). In this specification, a resin layer containing filler (A) may be referred to as a "filler-containing layer." Filler (A) is dispersed in the thermoplastic resin in the filler-containing layer and is held in the resin layer by the thermoplastic resin.

[0046] The interlayer consists of one or more resin layers, but may consist only of a filler-containing layer as described above, or it may contain a resin layer without filler in addition to a filler-containing layer. The content of filler (A) in the filler-containing layer should be adjusted so that the content in the interlayer is within the above range, but it is preferably 0.01% by mass or more and 1% by mass or less based on the total amount of the filler-containing layer. The content of filler (A) in the filler-containing layer is more preferably 0.02% by mass or more, even more preferably 0.04% by mass or more, even more preferably 0.08% by mass or more, even more preferably 0.8% by mass or less, even more preferably 0.5% by mass or less, and even more preferably 0.3% by mass or less.

[0047] <Coloring agent> This interlayer may contain a coloring agent. By including a coloring agent in addition to the filler (A), the granular texture caused by the filler (A) can be colored, thereby enhancing the aesthetic appeal. Furthermore, it is possible to apply a color according to the coloring agent while maintaining the metallic feel that comes from the reflected light from the filler (A). For example, it is possible to produce a shimmering, colored metallic look. This interlayer has one or more resin layers, but the coloring agent only needs to be contained in at least one of the resin layers. The coloring agent should be dispersed in the thermoplastic resin within the resin layer.

[0048] The coloring agent may be incorporated into the filler-containing layer described above, and the filler-containing layer may be used as the coloring layer. However, it is preferable to incorporate the coloring agent into a layer separate from the filler-containing layer (hereinafter also referred to as the "second resin layer"). By incorporating a colorant into the second resin layer, it becomes possible to mask the granular and metallic appearance caused by the filler (A). For example, it is possible to increase the granularity value (G value) measured from one side while decreasing it measured from the other side, resulting in a distinctive granular appearance when viewed from one side, while maintaining a more subdued appearance when viewed from the other side. Similarly, it becomes easier to increase the difference in |CD| measured from one side and the other side, allowing for a metallic appearance on one side while suppressing it on the other.

[0049] As colorants, pigments and dyes that are conventionally used in interlayer films for laminated glass can be used. From the viewpoint of effectively coloring the interlayer with a small amount of pigment, pigments are preferred. Examples of pigments include phthalocyanine, anthraquinone, perylene, azo compounds, carbon black, quinacridone, titanium dioxide, diketopyrrolopyrrole, thioindigo, Ni complexes, perinone, isoindoline, quinophthalone, surene, dioxazine, pyrocholine, calcium carbonate, and derivatives thereof. Among these, phthalocyanine, phthalocyanine derivatives, anthraquinone, anthraquinone derivatives, perylene, perylene derivatives, and carbon black are preferred because they have high affinity with thermoplastic resins and are less prone to bleeding out, with carbon black being the most preferred among these. By using carbon black, a subdued color tone can be achieved with a small amount of pigment, making it easier to impart a sense of luxury and further enhancing the design. It also makes it easier to mask granular texture. In this interlayer, one coloring agent may be used alone, or two or more coloring agents may be used in combination.

[0050] The colorant content in this interlayer is preferably 0.00005% by mass or more and 0.2% by mass or less. By keeping the colorant content within the above range, it becomes easier to color the film to the desired color using the colorant. Furthermore, the metallic and granular appearance can be appropriately masked by the colored layer while maintaining good transparency. The colorant content in this interlayer is more preferably 0.0001% by mass or more, even more preferably 0.001% by mass or more, even more preferably 0.005% by mass or more, even more preferably 0.15% by mass or less, even more preferably 0.1% by mass or less, and even more preferably 0.05% by mass or less.

[0051] Furthermore, the colorant content in this interlayer refers to the colorant content relative to the entire thickness of the interlayer when the interlayer is multilayered. In addition, the colorant content may differ from region to region of the interlayer, but it is desirable that the colorant content be within the predetermined range in the region where filler (A) is contained, particularly in the predetermined region where the filler (A) content is within the predetermined range described above.

[0052] Furthermore, the interlayer consists of one or more resin layers, and if the interlayer contains a coloring agent, it is preferable that at least one resin layer contains the coloring agent and becomes a colored layer. However, in the present invention, it is preferable that a resin layer other than the filler-containing layer described above (a second resin layer) contains the coloring agent and becomes a colored layer. The coloring agent content in the colored layer is preferably 0.0001% by mass or more and 0.4% by mass or less, based on the total amount of the colored layer. By keeping the coloring agent content within the above range, it is possible to achieve a moderate color with the coloring agent while maintaining good transparency. Furthermore, if the colored layer is a separate layer from the filler-containing layer, the granular or metallic appearance caused by the filler (A) can be masked by the colored layer. The coloring agent content in the colored layer is more preferably 0.001% by mass or more, even more preferably 0.005% by mass or more, even more preferably 0.01% by mass or more, even more preferably 0.2% by mass or less, even more preferably 0.15% by mass or less, and even more preferably 0.1% by mass or less, based on the total amount of the colored layer.

[0053] The filler-containing layer may be a layer that is substantially free of colorants. The second resin layer may be a colored layer containing a colorant as described above, or it may be a resin layer that is substantially free of filler (A) and colorants. The resin layer that is substantially free of filler (A) and colorants generally has high transmittance and is referred to as the clear layer in this specification. Furthermore, "substantially free of colorants and filler (A)" means that colorants and filler (A) are not intentionally incorporated into the clear layer. The specific content of colorants and filler (A) in the clear layer is, for example, less than 0.0001% by mass in total, preferably less than 0.00001% by mass, and most preferably 0% by mass. Similarly, the statement that a filler-containing layer is substantially colorant-free means that no colorant is intentionally incorporated into the filler-containing layer, and the specific colorant content in the filler-containing layer is, for example, less than 0.0001% by mass, preferably less than 0.00001% by mass, and most preferably 0% by mass.

[0054] [Thermoplastic resin] As described above, this interlayer contains a thermoplastic resin. The inclusion of a thermoplastic resin makes it easier for this interlayer to function as an adhesive layer, resulting in good adhesion to the glass component. As described above, this interlayer contains one or more resin layers, and it is preferable that each resin layer contains a thermoplastic resin. The thermoplastic resin used in each resin layer, such as the filler-containing layer, is not particularly limited, but examples include polyvinyl acetal resin, ethylene-vinyl acetate copolymer resin, ionomer resin, polyurethane resin, thermoplastic elastomer, acrylic resin, acrylic-vinyl acetate copolymer resin, polyvinyl alcohol resin, polyolefin resin, polyvinyl acetate resin, and polystyrene resin. Using these resins makes it easier to ensure adhesion to the glass component. Among these, polyvinyl acetal resin, ethylene-vinyl acetate copolymer resin, ionomer resin, polyurethane resin, and thermoplastic elastomer are preferred. In this interlayer, the thermoplastic resin may be used alone or in combination of two or more types. When using two or more types in combination, the interlayer may contain two or more thermoplastic resins in a single resin layer, or different types of thermoplastic resins may be contained in different resin layers. Among these, at least one selected from polyvinyl acetal resin and ethylene-vinyl acetate copolymer resin is preferred, and polyvinyl acetal resin is more preferred in particular because it exhibits excellent adhesion to inorganic glass when used in combination with a plasticizer. Therefore, the resin in the filler-containing layer is also preferably at least one selected from polyvinyl acetal resin and ethylene-vinyl acetate copolymer resin, with polyvinyl acetal resin being more preferred.

[0055] Furthermore, if there are multiple resin layers, the resins constituting each resin layer may be appropriately selected from the resins listed above. While the resins constituting each resin layer may be different from each other, it is preferable that they be identical. Therefore, when there are multiple resin layers, it is preferable that the resin constituting each resin layer is either polyvinyl acetal resin or ethylene-vinyl acetate copolymer resin, and more preferably that they are all polyvinyl acetal resins.

[0056] (Polyvinyl acetal resin) The polyvinyl acetal resin is not particularly limited as long as it is a polyvinyl acetal resin obtained by acetalizing polyvinyl alcohol (PVA) with an aldehyde. The above-mentioned aldehydes are not particularly limited, but generally, aldehydes having 1 to 10 carbon atoms are preferred. The above-mentioned aldehydes having 1 to 10 carbon atoms are not particularly limited, and examples include n-butyraldehyde, isobutyraldehyde, n-valeraldehyde, 2-ethylbutyraldehyde, n-hexylaldehyde, n-octylaldehyde, n-nonylaldehyde, n-decylaldehyde, formaldehyde, acetaldehyde, benzaldehyde, and the like. These aldehydes may be used individually or in combination of two or more. Among those mentioned above, n-butyraldehyde, n-hexylaldehyde, and n-valeraldehyde are preferred, with n-butyraldehyde being more preferred. Therefore, polyvinyl butyral resin is preferred as the polyvinyl acetal resin.

[0057] Polyvinyl alcohol (PVA) is obtained by saponifying polyvinyl esters, such as polyvinyl acetate. The degree of saponification of polyvinyl alcohol is generally 70 to 99.9 mol%. Polyvinyl acetal resins may be used individually or in combination of two or more types. The average degree of polymerization of PVA is preferably 200 or higher, more preferably 500 or higher, even more preferably 1000 or higher, and even more preferably 1500 or higher. Setting the average degree of polymerization above the lower limit increases the penetration resistance of the laminated glass. Furthermore, the average degree of polymerization of PVA is preferably 5000 or lower, more preferably 4000 or lower, even more preferably 3500 or lower, and even more preferably 2500 or lower. The average degree of polymerization of polyvinyl alcohol is determined by a method compliant with JIS K6726 "Test Method for Polyvinyl Alcohol".

[0058] The hydroxyl group content of the polyvinyl acetal resin is preferably 15 mol% or more, and more preferably 38 mol% or less. A hydroxyl group content of 15 mol% or more tends to improve adhesion and enhance the penetration resistance of the laminated glass. A hydroxyl group content of 38 mol% or less prevents the laminated glass from becoming too hard. From the viewpoint of adhesion to the glass component, the above hydroxyl group content is more preferably 20 mol% or more, and even more preferably 25 mol% or more. Furthermore, the above hydroxyl group content is more preferably 35% or less, and even more preferably 33 mol% or less. Similarly, when polyvinyl butyral resin is used as the polyvinyl acetal resin, the amount of hydroxyl groups is 15 mol% or more, preferably 38 mol% or less, more preferably 20 mol% or more, even more preferably 25 mol% or more, even more preferably 35% mol or less, and even more preferably 33 mol or less. The amount of hydroxyl groups in polyvinyl acetal resin is the mole fraction obtained by dividing the amount of ethylene groups to which hydroxyl groups are attached by the total amount of ethylene groups in the main chain, expressed as a percentage. The amount of ethylene groups to which hydroxyl groups are attached can be measured, for example, in accordance with JIS K6728 "Test Method for Polyvinyl Butyral".

[0059] The degree of acetalization of the above polyvinyl acetal resin is preferably 47 mol% or more, and more preferably 85 mol% or less. More preferably 55 mol% or more, even more preferably 60 mol% or more, even more preferably 80 mol% or less, and even more preferably 75 mol% or less. Furthermore, the degree of acetalization refers to the degree of butyralization when the acetal group is a butyral group and the polyvinyl acetal resin (A) is a polyvinyl butyral resin.

[0060] The degree of acetalization described above is a value expressed as a percentage of the mole fraction obtained by dividing the total amount of ethylene groups in the main chain (the difference between the total amount of ethylene groups in the main chain and the amount of ethylene groups to which hydroxyl groups and ethylene groups are to which acetyl groups are attached) by the total amount of ethylene groups in the main chain. The degree of acetalization (degree of butyralization) can be calculated from the results obtained by measuring according to a method compliant with, for example, JIS K6728 "Test Method for Polyvinyl Butyral".

[0061] The degree of acetylation of the polyvinyl acetal resin is preferably 30 mol% or less, more preferably 20 mol% or less, even more preferably 10 mol% or less, and even more preferably 2 mol% or less. When the degree of acetylation is below the above upper limit, the moisture resistance of the interlayer film and laminated glass is increased. Furthermore, although the degree of acetylation is not particularly limited, it is preferably 0.01 mol% or more, and more preferably 0.1 mol% or more. The degree of acetylation described above is a value expressed as a percentage of the mole fraction obtained by dividing the amount of ethylene groups to which acetyl groups are attached by the total amount of ethylene groups in the main chain. The amount of ethylene groups to which acetyl groups are attached can be measured, for example, in accordance with JIS K6728 "Test Method for Polyvinyl Butyral".

[0062] (Ethylene-vinyl acetate copolymer resin) The ethylene-vinyl acetate copolymer resin may be a non-crosslinked type ethylene-vinyl acetate copolymer resin, or a high-temperature crosslinked type ethylene-vinyl acetate copolymer resin. Furthermore, ethylene-vinyl acetate modified resins, such as ethylene-vinyl acetate copolymer saponified products or hydrolyzed products of ethylene-vinyl acetate, can also be used as the ethylene-vinyl acetate copolymer resin. The ethylene-vinyl acetate copolymer resin preferably has a vinyl acetate content of 10 to 50% by mass, more preferably 20 to 40% by mass, as measured in accordance with JIS K 6730 "Test Method for Ethylene-Vinyl Acetate Resin" or JIS K 6924-2:1997. By setting the vinyl acetate content above these lower limits, adhesion to glass components is improved, and the penetration resistance of the laminated glass tends to improve. Conversely, by setting the vinyl acetate content below these upper limits, the tensile strength of the interlayer film is increased, resulting in improved impact resistance of the laminated glass.

[0063] (Ionomer resin) There are no particular limitations on the ionomer resin, and various ionomer resins can be used. Specifically, examples include ethylene-based ionomers, styrene-based ionomers, perfluorocarbon-based ionomers, telechelic ionomers, and polyurethane ionomers. Among these, ethylene-based ionomers are preferred because they provide good mechanical strength, durability, and transparency in laminated glass, and have excellent adhesion to glass components.

[0064] As ethylene-based ionomers, ionomers of ethylene-unsaturated carboxylic acid copolymers are preferably used due to their excellent transparency and toughness. The ethylene-unsaturated carboxylic acid copolymer is a copolymer having at least ethylene-derived structural units and unsaturated carboxylic acid-derived structural units, and may also have structural units derived from other monomers. Examples of unsaturated carboxylic acids include acrylic acid, methacrylic acid, and maleic acid, with acrylic acid and methacrylic acid being preferred, and methacrylic acid being particularly preferred. Other monomers include acrylic acid esters, methacrylic acid esters, and 1-butene. As an ethylene-unsaturated carboxylic acid copolymer, it is preferable that, when the total number of constituent units of the copolymer is considered to be 100 mol%, the constituent units derived from ethylene account for 75 to 99 mol%, and the constituent units derived from unsaturated carboxylic acid account for 1 to 25 mol%. Ionomers of ethylene-unsaturated carboxylic acid copolymers are ionomer resins obtained by neutralizing or crosslinking at least a portion of the carboxyl groups of the ethylene-unsaturated carboxylic acid copolymer with metal ions, wherein the degree of neutralization of the carboxyl groups is usually 1 to 90%, preferably 5 to 85%.

[0065] Examples of ion sources in ionomer resins include alkali metals such as lithium, sodium, potassium, rubidium, and cesium, and polyvalent metals such as magnesium, calcium, and zinc, with sodium and zinc being preferred.

[0066] There are no particular limitations on the method for producing ionomer resins, and they can be produced by conventionally known production methods. For example, when using an ionomer of an ethylene-unsaturated carboxylic acid copolymer as the ionomer resin, for example, ethylene and an unsaturated carboxylic acid can be radical copolymerized under high temperature and high pressure to produce an ethylene-unsaturated carboxylic acid copolymer. Then, by reacting this ethylene-unsaturated carboxylic acid copolymer with a metal compound containing the above-mentioned ion source, an ionomer of an ethylene-unsaturated carboxylic acid copolymer can be produced.

[0067] (Polyurethane resin) Examples of polyurethane resins include polyurethanes obtained by reacting an isocyanate compound with a diol compound, and polyurethanes obtained by reacting an isocyanate compound with a diol compound and a chain length extender such as a polyamine. Polyurethane resins may also contain sulfur atoms. In such cases, some or all of the diols may be selected from polythiols and sulfur-containing polyols. Polyurethane resins can provide good adhesion to organic glass. Therefore, they are suitably used when the glass component is organic glass.

[0068] (Thermoplastic elastomer) Examples of thermoplastic elastomers include styrene-based thermoplastic elastomers and aliphatic polyolefins. The styrene-based thermoplastic elastomer is not particularly limited, and known ones can be used. Styrene-based thermoplastic elastomers generally have a styrene monomer polymer block that forms a hard segment and a conjugated diene compound polymer block or a hydrogenated block thereof that forms a soft segment. Specific examples of styrene-based thermoplastic elastomers include styrene-isoprene diblock copolymers, styrene-butadiene diblock copolymers, styrene-isoprene-styrene triblock copolymers, styrene-butadiene / isoprene-styrene triblock copolymers, styrene-butadiene-styrene triblock copolymers, and hydrogenated versions thereof. The above aliphatic polyolefin may be a saturated aliphatic polyolefin or an unsaturated aliphatic polyolefin. The above aliphatic polyolefin may be a polyolefin with a chain-like olefin as a monomer or a polyolefin with a cyclic olefin as a monomer. From the viewpoint of effectively improving the storage stability and sound insulation properties of the interlayer, the above aliphatic polyolefin is preferably a saturated aliphatic polyolefin. The above aliphatic polyolefin materials include ethylene, propylene, 1-butene, trans-2-butene, cis-2-butene, 1-pentene, trans-2-pentene, cis-2-pentene, 1-hexene, trans-2-hexene, cis-2-hexene, trans-3-hexene, cis-3-hexene, 1-heptene, trans-2-heptene, cis-2-heptene, trans-3-heptene, cis-3-heptene, 1-octene, trans-2-octene, cis-2-octene, trans-3- Examples include octene, cis-3-octene, trans-4-octene, cis-4-octene, 1-nonene, trans-2-nonene, cis-2-nonene, trans-3-nonene, cis-3-nonene, trans-4-nonene, cis-4-nonene, 1-decene, trans-2-decene, cis-2-decene, trans-3-decene, cis-3-decene, trans-4-decene, cis-4-decene, trans-5-decene, cis-5-decene, 4-methyl-1-pentene, and vinylcyclohexane.

[0069] (Plasticizer) This interlayer may further contain a plasticizer. As described above, this interlayer has one or more resin layers, but each resin layer may contain a plasticizer in addition to the thermoplastic resin. Therefore, the filler-containing layer may contain a plasticizer. This interlayer becomes flexible due to the inclusion of a plasticizer, thereby improving the flexibility of the laminated glass and enhancing its puncture resistance. Furthermore, it is possible to improve adhesion to the glass component. The plasticizer is particularly effective when polyvinyl acetal resin is used as the thermoplastic resin. Therefore, it is more preferable for each resin layer, such as the filler-containing layer, to contain both polyvinyl acetal resin and a plasticizer. Examples of plasticizers include organic ester plasticizers such as monobasic organic acid esters and polybasic organic acid esters, and phosphorus-based plasticizers such as organic phosphate ester plasticizers and organic phosphite ester plasticizers. Among these, organic ester plasticizers are preferred.

[0070] Organic ester plasticizers include, for example, triethylene glycol di-2-ethyl butyrate, triethylene glycol di-2-ethylhexanoate, triethylene glycol dicaprylate, triethylene glycol di-n-octanoate, triethylene glycol di-n-heptanoate, tetraethylene glycol di-n-heptanoate, tetraethylene glycol di-2-ethylhexanoate, dibutyl sebacate, dioctyl azelate, dibutyl carbitol adipate, ethylene glycol di-2-ethyl butyrate, 1,3-propylene glycol di-2-ethyl butyrate, 1,4-butylene glycol di-2-ethyl butyrate, 1,2-butylene glycol di-2-ethyl butyrate, diethylene glycol di- Examples include 2-ethyl butyrate, diethylene glycol di-2-ethylhexanoate, dipropylene glycol di-2-ethyl butyrate, triethylene glycol di-2-ethylpentanoate, tetraethylene glycol di-2-ethyl butyrate, diethylene glycol dicapriate, triethylene glycol di-n-heptanoate, tetraethylene glycol di-n-heptanoate, triethylene glycol di-2-ethyl butyrate, dihexyl adipate, dioctyl adipate, hexylcyclohexyl adipate, diisononyl adipate, heptylnonyl adipate, dibutyl sebacate, oil-modified alkyd sebacate, mixtures of phosphate esters and adipate esters, and mixed adipate esters. Mixed adipate esters include adipate esters made from two or more alcohols selected from alkyl alcohols having 4 to 9 carbon atoms and cyclic alcohols having 4 to 9 carbon atoms. Among the plasticizers mentioned above, triethylene glycol-di-2-ethylhexanoate (3GO) is particularly preferred.

[0071] The content of the plasticizer in this interlayer is not particularly limited, but is preferably 10 parts by mass or more and 100 parts by mass or less per 100 parts by mass of thermoplastic resin. When the plasticizer content is 10 parts by mass or more, the laminated glass becomes moderately flexible, and the puncture resistance, adhesion, etc., are improved. When the plasticizer content is 100 parts by mass or less, separation of the plasticizer from this interlayer is prevented. The plasticizer content is more preferably 20 parts by mass or more, even more preferably 30 parts by mass or more, even more preferably 35 parts by mass or more, and even more preferably 70 parts by mass or less, and even more preferably 63 parts by mass or less. Furthermore, although this interlayer contains one or more resin layers, if each resin layer, such as a filler-containing layer, contains a plasticizer, the preferred value for the plasticizer content in each resin layer is the same as the preferred value for the plasticizer content described above.

[0072] This interlayer mainly consists of a resin, or a resin and a plasticizer. The total amount of thermoplastic resin and plasticizer in this interlayer is usually 70% by mass or more, preferably 80% by mass or more, and more preferably 90% by mass or more but less than 100% by mass, based on the total amount of the interlayer. By keeping the above total amount less than 100% by mass, this interlayer can contain additives such as fillers (A) and colorants. Each resin layer is primarily composed of resin, or resin and plasticizer. The total amount of thermoplastic resin and plasticizer in each resin layer is typically 70% by mass or more, preferably 80% by mass or more, and more preferably 90% by mass or more but less than 100% by mass, based on the total amount of each resin layer.

[0073] [Other additives] This interlayer may contain additives other than those listed above, including ultraviolet absorbers, antioxidants, light stabilizers, adhesion modifiers, heat shielding agents, fluorescent whitening agents, and crystal nucleating agents. As described above, this interlayer has one or more resin layers, and each resin layer may contain at least one additive appropriately selected from these additives.

[0074] <Layer configuration> The layer structure of this interlayer film will be explained in more detail below. In this invention, the interlayer may consist of a single layer of resin. When the interlayer consists of a single layer of resin, the resin layer becomes a filler-containing layer containing a thermoplastic resin and filler (A). The single layer of resin is preferably bonded to a glass plate constituting the glass component on both sides of the resin layer.

[0075] Furthermore, as shown in Figure 2, the interlayer may also be a two-layer interlayer 20 comprising a filler-containing layer 21 and a second resin layer 22. The filler-containing layer 21 and the second resin layer 22 are laminated in the thickness direction. In the two-layer interlayer 20, the filler-containing layer 21 constitutes one surface 20A (the surface on the filler-containing layer side) of the interlayer, and the second resin layer 21 constitutes the other surface 20B (the surface on the second resin layer side) of the interlayer, and these serve as the bonding surfaces to the glass members (first and second glass members 31 and 32) of the laminated glass 30, respectively. The surface of the first glass member 31 is the filler-containing layer side (surface 30A) of the laminated glass 30 described above, and the surface of the second glass member 32 is the second resin layer side (surface 30B) of the laminated glass described above.

[0076] However, this interlayer may have multiple filler-containing layers and at least one of the second resin layers. For example, multiple second resin layers may be provided to form a three-layer structure such as second resin layer / filler-containing layer / second resin layer, or multiple filler-containing layers may be provided. Furthermore, the second resin layer and the filler-containing layer may be provided continuously, and may have structures such as first resin layer / first resin layer / second resin layer, or first resin layer / second resin layer / second resin layer. In addition, this interlayer may have a structure of four or more layers.

[0077] Furthermore, if the interlayer comprises at least a filler-containing layer 21 and a second resin layer 22 which is a colored layer, as shown in Figure 2, it is preferable to arrange the second resin layer 22, which is the colored layer, on the side opposite to the filler-containing layer 21. In particular, it is more preferable to arrange the surface 20A on which the filler-containing layer 21 is provided on the outdoor side (for example, the outside of a car) and the surface 20B on which the second resin layer 22, which is the colored layer, is provided on the indoor side (for example, the inside of a car). By arranging them in this way, when viewed from the outdoors (outside of a car), it is possible to have a unique appearance with a granular texture, while when viewed from indoors (inside of a car), it is possible to have a calm impression, making it easier to further enhance the design appeal.

[0078] (Sound insulation performance) The interlayer may have multiple resin layers, and if at least three resin layers are provided, sound insulation performance may be provided by a three-layer structure in which the central resin layer is the core layer and the layers on both sides are skin layers. In this case, the interlayer may also contain resin layers as appropriate in addition to the two skin layers and one core layer. Furthermore, the interlayer may have two or more core layers, for example, sound insulation performance may be provided by a five-layer structure of skin layer / core layer / skin layer / core layer / skin layer. Here, the core layer may be a filler-containing layer or a second resin layer, but it is preferably a second resin layer, and more preferably a clear layer. The skin layer may be either a filler-containing layer or a second resin layer. Here, the resin used for both the skin layer and the core layer is preferably polyvinyl acetal resin, and more preferably polyvinyl butyral resin.

[0079] As described above, it is preferable that both the skin layer and the core layer contain a plasticizer. In this case, the content of the plasticizer in the core layer relative to 100 parts by mass of thermoplastic resin is preferably greater than the content of the plasticizer in the skin layer relative to 100 parts by mass of thermoplastic resin, and the difference in content is preferably 5 parts by mass or more and 60 parts by mass or less, more preferably 10 parts by mass or more and 50 parts by mass or less, and even more preferably 15 parts by mass or more and 35 parts by mass or less. Increasing the plasticizer content in the core layer makes it easier to improve sound insulation performance. Furthermore, it is preferable that the amount of hydroxyl groups in the polyvinyl acetal resin in the core layer is lower than the amount of hydroxyl groups in the polyvinyl acetal resin in the skin layer, and the difference in the amount of hydroxyl groups is preferably 1 mol% to 20 mol%, more preferably 2 mol% to 15 mol%, and even more preferably 2 mol% to 10 mol%. Lowering the amount of hydroxyl groups in the core layer makes it easier to increase the plasticizer content, which in turn makes it easier to improve sound insulation performance.

[0080] When the interlayer is provided with a core layer and a skin layer as described above, it is preferable that the skin layer, core layer, and skin layer are all clear layers, and that the interlayer has a laminated structure further comprising a filler-containing layer in addition to these three layers. That is, it is preferable to have a laminated structure of filler-containing layer / clear layer (skin layer) / clear layer (core layer) / clear layer (skin layer). Furthermore, when the interlayer is provided with a core layer and a skin layer as described above, it is preferable that the skin layer is a colored layer, the core layer is a clear layer, and the interlayer has a laminated structure that includes a filler-containing layer in addition to these three layers. That is, it is preferable to have a laminated structure of filler-containing layer / colored layer (skin layer) / clear layer (core layer) / colored layer (skin layer). In this case, as described above, the side on which the colored layer is provided is preferably the other side, and more preferably the indoor side. As described above, by making the layer structure of the skin layer and core layer symmetrical in the thickness direction, it becomes easier to manufacture this interlayer film with sound-insulating properties by extrusion molding or other methods.

[0081] Of course, in the case of a structure in which the interlayer film is provided with a core layer and a skin layer as described above, the laminated structure is not limited to the above, and may have any of the following laminated structures (1) to (4), or it may have any other laminated structure. (1) Filler-containing layer / Clear layer (skin layer) / Clear layer (core layer) / Clear layer (skin layer) / Colored layer (2) Filler-containing layer (skin layer) / Clear layer (core layer) / Clear layer (skin layer) (3) Clear layer (skin layer) / Clear layer (core layer) / Filler-containing layer (skin layer) / Core layer (clear layer) / Colored layer (skin layer) (4) Filler-containing layer (skin layer) / Clear layer (core layer) / Filler-containing layer (skin layer) / Colored layer In addition, in the laminated structures described in (1) to (4) above, the right side is preferably the side facing the other, and more preferably the side facing indoors.

[0082] Furthermore, the filler-containing layer does not need to be provided over the entire area of ​​the interlayer film, but may be provided over only a portion of it. Similarly, the second resin layer does not need to be provided over the entire area of ​​the interlayer film, but may be provided over only a portion of it. Also, if multiple filler-containing layers are provided, only some of the filler-containing layers may be provided over only a portion of the area. Similarly, if multiple second resin layers are provided, only some of the second resin layers may be provided over only a portion of the area.

[0083] In this interlayer, it is preferable that the second resin layer constituting the colored layer is provided in a portion of the region. For example, if this interlayer has a laminated structure of filler-containing layer / second resin layer (clear layer) / second resin layer (colored layer) / second resin layer (clear layer), the second resin layer (colored layer) may be provided in only a portion of the region of this interlayer. In other words, a portion of the region may have a laminated structure of filler-containing layer / second resin layer (clear layer) / second resin layer (colored layer) / second resin layer (clear layer), while the remaining region may have a laminated structure of filler-containing layer / second resin layer (clear layer) / second resin layer (clear layer). In this case, in regions where the second resin layer (colored layer) is not provided, the two second resin layers (clear layers) may be integrated to form a single second resin layer (clear layer). Furthermore, even if the film has a layer structure consisting of, for example, a filler-containing layer, a second resin layer (colored layer), and a second resin layer (clear layer), the second resin layer (colored layer) may be provided only in a portion of the interlayer film. In other words, a portion of the region may have a laminated structure of a filler-containing layer / second resin layer (colored layer) / second resin layer (clear layer), while the remaining region may have a laminated structure of a filler-containing layer / second resin layer (clear layer).

[0084] Furthermore, for example, the material may have a layered structure of a second resin layer / filler-containing layer / second resin layer, where the filler-containing layer is provided only in a portion of the region. In this case, the portion of the region may have a laminated structure of a second resin layer / filler-containing layer / second resin layer, while the remaining region may have a structure consisting of a second resin layer / second resin layer. In this case, in the region where the filler-containing layer is not provided, the two second resin layers may be integrated to form a single second resin layer.

[0085] Furthermore, in a laminated structure consisting of a second resin layer (clear layer) / filler-containing layer / second resin layer (clear layer) / second resin layer (colored layer) / second resin layer (clear layer), the filler-containing layer and the second resin layer (colored layer) may be provided only in certain areas. In other words, a portion of the region may have a laminated structure of second resin layer (clear layer) / filler-containing layer / second resin layer (clear layer) / second resin layer (colored layer) / second resin layer (clear layer), while the remaining region may have a laminated structure of second resin layer (clear layer) / second resin layer (clear layer) / second resin layer (clear layer). In this case, in regions without a filler-containing layer and a second resin layer (colored layer), two or three second resin layers (clear layers) may be integrated to form a single second resin layer (clear layer).

[0086] The filler-containing layer and the second resin layer may have a constant thickness, but their thickness may vary. For example, as described above, the filler-containing layer or the second resin layer provided in a portion of the interlayer may have a cross-sectional shape in which the thickness decreases as it approaches the area where the filler-containing layer or the second resin layer is not provided.

[0087] The interlayer may have a rectangular cross-section and a constant thickness, but is not limited to a rectangular cross-section; for example, it may have a wedge shape. In a wedge-shaped interlayer, the thickness of one end of the cross-section differs from the thickness of the other end on the opposite side of the cross-section, and the cross-section may be trapezoidal or triangular. Furthermore, while the thickness of the wedge-shaped interlayer changes from one end to the other, it is not necessary for the thickness to change throughout the entire surface; there may be a portion with a constant thickness, and the portion with changing thickness may be only a part of the surface.

[0088] Furthermore, the second resin layer may be anything other than the clear layer and colored layer described above; for example, a barrier layer or a reflective layer may be used. The barrier layer is positioned between two resin layers, for example, between a filler-containing layer and a clear or colored layer, between two clear layers, or between a clear layer and a colored layer, to prevent components contained in the resin layer (filler (A), colorant, plasticizer, etc.) from migrating to the other resin layer. In the case of a barrier layer, a known resin film may be used as the second resin layer. For example, polyester films such as polyethylene terephthalate (PET) film, polyolefin films, polyamide films, polyimide films, polycarbonate films, and acrylic resin films can be used. Among these, it is preferable to use either an acrylic resin film or a PET film, with PET film being more preferable. As for the acrylic resin used in the acrylic resin film, an acrylic polymer containing hydroxyl group-containing (meth)acrylate-derived structural units is preferred. Specifically, examples include polyhydroxypropyl methacrylate (HPMA resin) and polyhydroxyethyl methacrylate (HEMA resin).

[0089] Furthermore, the reflective layer should be a layer capable of reflecting visible light. By incorporating a reflective layer, this interlayer can easily give one side of the interlayer a metallic appearance. The reflective layer is preferably placed between two resin layers, for example, between a filler-containing layer and a clear or colored layer, between two clear layers, or between a clear layer and a colored layer.

[0090] The reflective layer preferably has an average reflectance of a certain level or higher in the visible light region. Specifically, the reflective layer preferably has an average reflectance of 25.0% or higher, 30.0% or higher, and more preferably 35.0% or higher in the wavelength range of 380 to 780 nm. Furthermore, from the viewpoint of ensuring a certain level of transparency in the interlayer, it is preferable that the reflective layer has an average reflectance in the visible light region of a certain level or less. Specifically, it is preferable that the reflective layer has an average reflectance of 70.0% or less, 60.0% or less, and more preferably 55.0% or less in the wavelength range of 380 to 780 nm.

[0091] The reflective layer preferably reflects light in the infrared region in addition to the visible light region, but it may also not reflect light in the infrared region. The reflective layer can improve the heat shielding performance of the interlayer by reflecting light in the infrared region. The average reflectance of the reflective layer in the wavelength range of 380 to 2500 nm is preferably 15.0% or more, more preferably 17.0% or more, even more preferably 21.0% or more, and also preferably 55.0% or less, preferably 40.0% or less, and even more preferably 30.0% or less.

[0092] The reflective layer preferably has an average reflectance in the visible light region that is higher than the average reflectance in the infrared light region. Specifically, it is preferable that the average reflectance in the wavelength range of 380 to 780 nm is higher than the average reflectance in the wavelength range of 780 to 2500 nm. In the reflective layer, the average reflectance in the wavelength range of 380 to 780 nm is higher than the average reflectance in the wavelength range of 780 to 2500 nm, and the difference is preferably 5% or more, more preferably 12% or more, and even more preferably 18% or more. Furthermore, there is no particular upper limit to the above difference in average reflectance, but for example, it is 50%, preferably 45%, and more preferably 38%. The average reflectance in the specific wavelength range of 780 to 2500 nm should be 0% or higher, but from the viewpoint of practicality and ensuring a certain level of heat shielding, it is preferably 3% or higher, more preferably 5% or higher, and even more preferably 10% or higher. Furthermore, from the viewpoint of simplifying the structure of the reflective layer, it is preferably 40% or lower, preferably 30% or lower, and even more preferably 20% or lower.

[0093] The reflectance of the reflective layer can be measured, for example, by the following measurement method. Light from a D65 light source is irradiated onto one surface of the reflective layer at an incident angle of 90° with a 10° field of view in the measurement wavelength range of 300nm-2000nm. Reflected light is detected on one surface under the condition of a wavelength interval of 5nm. The reflectance at each wavelength is measured using a UV-Vis-Near-Infrared Spectrophotometer "V-670" (manufactured by JASCO Corporation) equipped with an absolute reflectance measurement unit (ARSN-733), and the average reflectance at 380-780nm, 780-2500nm, and 380-2500nm is measured.

[0094] The reflective layer is not particularly limited and includes known reflective films such as nano-laminated films and resin films with sputtered metal thin films (e.g., PET films), but among these, nano-laminated films are preferred. By using nano-laminated films, it becomes easier to increase the reflectivity in the desired wavelength range by appropriately adjusting the in-plane refractive index difference between resin layers, the number of layers, and the layer thickness, as described later.

[0095] A nano-laminated film is a film in which multiple layers of resin layers with different refractive indices on the nano-order are alternately laminated. Methods for manufacturing nano-laminated films are described in, for example, Japanese Patent Publication No. 2004-249587, Japanese Patent Publication No. 2005-59332, Japanese Patent Publication No. 2007-301982, Japanese Patent Publication No. 2009-78421, Japanese Patent Publication No. 2010-184493, Japanese Patent Publication No. 2015-110276, etc., and can be manufactured by referring to these patent publications. Furthermore, the nano-laminated films used in this invention are generally commercially available and can be obtained. Examples include "PICASUS" (registered trademark) manufactured by Toray Industries, Inc. and the "MLF Film" series manufactured by Teijin DuPont Films Ltd.

[0096] [Thickness of each layer] The thickness of the filler-containing layer is preferably 0.1 mm to 2.5 mm, more preferably 0.2 mm to 2.0 mm, and even more preferably 0.25 mm to 1.5 mm. By keeping the thickness of this interlayer within these ranges, it becomes easier to obtain a granular or metallic appearance while ensuring transparency.

[0097] The thickness of the second resin layer is preferably 0.1 mm to 2.5 mm, more preferably 0.2 mm to 2.0 mm, and even more preferably 0.25 mm to 1.5 mm. By keeping the thickness of the second resin layer within the above range, various functions can be imparted without unnecessarily increasing the thickness of the interlayer. Furthermore, when the interlayer is provided with a colored layer on the side other than the filler-containing layer, the thickness of the colored layer on the side other than the filler-containing layer is preferably 0.1 mm to 2.0 mm, more preferably 0.2 mm to 1.5 mm, and even more preferably 0.25 mm to 1.2 mm. By having a colored layer on the other side within the above range, the colored layer can appropriately mask granularity and metallicity. Furthermore, the thickness of this interlayer film is preferably 0.2 mm to 2.6 mm, more preferably 0.25 mm to 2.2 mm, and even more preferably 0.3 mm to 1.75 mm.

[0098] Note that the thickness of the filler-containing layer, the second resin layer, the colored phase, and the interlayer may vary as described above. In such cases, the thickness of each layer and the interlayer described above refers to the thickness of the filler-containing layer at its thickest point within the region where the filler-containing layer is present. Furthermore, the thickness of the filler-containing layer refers to its total thickness if there are two or more filler-containing layers. The same applies to the second resin layer. Similarly, the thickness of the colored layer refers to its total thickness if there are two or more colored layers located on the opposite side of the filler-containing layer.

[0099] (Method for manufacturing interlayer films) The interlayer of the present invention is not particularly limited, but in the case of a single-layer structure, for example, it may be obtained by mixing a thermoplastic resin, a filler (A), and additives other than filler (A) as needed, and forming a resin layer by extrusion molding, press molding, etc. of the resulting resin composition. Here, from the viewpoint of improving dispersibility in the resin composition, if a plasticizer is used, for example, filler (A) may be blended with the plasticizer and thoroughly dispersed in the plasticizer before being mixed with the resin. In this case, a dispersant may be added to the plasticizer as appropriate. Also, if an additive other than filler (A) is used, depending on the type of additive, an additive other than filler (A), such as a colorant, may be blended with the plasticizer and thoroughly dispersed in the plasticizer before being mixed with the thermoplastic resin.

[0100] Even if the interlayer has a multilayer structure, it can be manufactured in the same way as a single-layer structure by obtaining each resin layer by extrusion molding, press molding, etc., and then laminating them. For example, it is preferable to prepare two or more extruders and attach multilayer feed blocks to the tips of multiple extruders to co-extrude. Also, if there are multiple resin layers and two or more resin layers have the same composition, two or more resin layers with the same composition may be extruded from a single extruder. Furthermore, the thickness of each resin layer may change along a direction perpendicular to the thickness direction, in which case the thickness can be changed by adjusting, for example, the amount of resin supplied. Furthermore, if the filler (A) has an anisotropic property that allows for orientation, such as when it has a flat plate shape, the longitudinal direction or planar direction of the filler (A) can be oriented along the planar direction of the interlayer (each resin layer) by the press molding, extrusion molding, etc., as described above. Alternatively, the interlayer may be manufactured by preparing multiple resin layers, arranging these multiple resin layers between two laminated glass members to obtain a laminate, and then heat-pressing (press-molding) the laminate to produce both the laminated glass and the interlayer simultaneously.

[0101] <Glass> The present invention also provides glass having a granularity value (G value) of 1.5 or higher (hereinafter sometimes referred to as "this glass"). In the present invention, by using this glass having a granularity value (G value) of 1.5 or higher, it is possible to enhance the design of various glass products to which this glass is applied by giving them a granular appearance and a glittering effect. In this glass, the granularity value (G value) is preferably 1.7 or higher, more preferably 2 or higher, even more preferably 2.5 or higher, and even more preferably 5 or higher, from the viewpoint of enhancing the granularity and giving it a more distinctive design. Furthermore, from the viewpoint of achieving a refined design with a moderate granularity, for example, it is 15 or lower, preferably 12 or lower, and more preferably 10 or lower.

[0102] The granularity value (G value) can be brought within the specified range by appropriately adjusting the type of filler (A) and the particle size of the filler (A) if the glass contains filler (A). Furthermore, if the granularity value (G value) is to be above a certain level due to the coating (A), it can be appropriately adjusted by the type of coating (A). Furthermore, the granularity value (G value) of this glass is sufficient if the granularity value (G value) measured from either side of the glass is within the above range, but it is also acceptable if the granularity value (G value) of both one side and the other side (i.e., the side opposite to the first side) is within the above range. Furthermore, if the granularity value (G value) measured from one surface is within the above range, the granularity value (G value) measured from the other surface may be the same as the granularity value (G value) measured from the one surface, or it may be lower than the granularity value (G value) measured from the one surface. If the granularity value (G value) measured from the other surface is lower than the granularity value (G value) measured from the one surface, similar to the interlayer described above, the granularity value (G value) measured from the other surface is preferably less than 1.5, more preferably 1 or less, and even more preferably 0.7 or less. Note that the lower limit of the granularity value (G value) is not particularly limited; for example, it may be 0, but practically it may be 0.1.

[0103] [Optical properties of this glass] It is preferable that this glass has one or more surfaces that satisfy the following equation (2), where C is the luminous intensity (Si(G)) at an incident angle of 45° and D is the luminous intensity (Si) at an incident angle of 75°. |CD|≧0.01 (2) This glass, with a CD value of 0.01 or higher, easily achieves a metallic appearance. Therefore, it is easier to create an appearance that possesses both granularity and metallicity, further enhancing its design appeal. In this glass as well, the surface that satisfies formula (2) is preferably the surface on which the granularity value (G value) is measured to be 1.5 or higher (preferably 1.5 to 15). With such a configuration, when viewing the glass from one side, it is possible to achieve an appearance that has both a granular and metallic feel. The above-mentioned |CD| value is preferably 0.15 or higher, more preferably 0.2 or higher, even more preferably 0.8 or higher, even more preferably 1.5 or higher, and also preferably 45 or lower, more preferably 20 or lower, even more preferably 10 or lower, and even more preferably 5 or lower.

[0104] Furthermore, in this glass, the |CD| value measured from the other side may be the same as the |CD| value measured from the one side, or it may be lower than the |CD| value measured from the one side. If the |CD| value measured from the other side is lower than that of the one side, the difference is preferably 0.1 or more, more preferably 0.2 or more, and also preferably 1 or more. By setting the difference in |CD| values ​​to a certain level or higher, it is possible to give a relatively strong metallic feel when observed from one side (e.g., the outdoor side), while suppressing the metallic feel when observed from the other side (e.g., the indoor side), resulting in a more subdued impression. The above difference in |CD| values ​​is not particularly limited, but it is preferably 20 or less, and more preferably 10 or less.

[0105] Preferably, this glass has at least one surface with a visible light reflectance (Rv(G)) of 5% or more. By having a surface with a visible light reflectance (Rv(G)) of 5% or more, this glass can have a metallic appearance. Therefore, it can have an appearance that has both a granular and metallic feel, further enhancing its design appeal. Furthermore, the visible light reflectance (Rv(G)) of this glass is measured from both one and the other surface of the glass. Ideally, the visible light reflectance (Rv(G)) measured from either one surface should be 5% or higher. However, it is preferable that the visible light reflectance (Rv(G)) measured from the surface where the granularity value (G value) is 1.5 or higher (preferably 1.5 to 15) is 5% or higher. With such a configuration, when the glass is viewed from one side, it is possible to achieve an appearance that has both a granular and metallic feel. The visible light reflectance (Rv(G)) on at least one surface is more preferably 8% or more, even more preferably 10% or more, even more preferably 13% or more, and also preferably 30% or less, preferably 25% or less, even more preferably 20% or less, and even more preferably 18% or less, similar to the Rv of the interlayer described above.

[0106] The present glass preferably has a haze (Hz(G)) of 20% or less, as described in the section on the interlayer. More preferably, the haze (Hz(G)) is 15% or less, and even more preferably 10% or less. The haze (Hz(G)) of the laminated glass may be 0% or more, but practically, it is preferable to be 0.5% or more. The haze (Hz(G)) values ​​of the present glass and the laminated glass described later may be determined using the method described above.

[0107] This glass preferably contains filler (A). The filler (A) is preferably dispersed within the glass. By containing filler (A), the glass can be given a granular texture. Furthermore, by appropriately adjusting the material of filler (A), a metallic texture can also be imparted. The details of filler (A) are as explained above, so we will omit that explanation. However, fillers that do not undergo changes in properties during sintering, as described later, are preferred. Specifically, preferred materials include metals such as aluminum, silver, copper, platinum, gold, titanium, nickel, tin, tin-cobalt alloys, indium, and chromium; metal oxides such as titanium oxide, silicon oxide, aluminum oxide, indium oxide, niobium oxide, zinc oxide, antimony oxide, and tungsten oxide; metals such as mica; and nonmetallic materials that are inorganic compounds other than metal oxides. As described above, it is preferable to use two or more of these in combination as appropriate. The filler (A) content in this glass is preferably 0.001% by mass or more, more preferably 0.005% by mass or more, even more preferably 0.01% by mass or more, even more preferably 0.03% by mass or more, and also preferably 1% by mass or less, more preferably 0.5% by mass or less, and even more preferably 0.1% by mass or less.

[0108] The glass may be either inorganic glass or organic glass, but inorganic glass is preferred. If the glass is inorganic glass, for example, it is preferable that the inorganic glass component serves as the matrix and the filler (A) is dispersed in the matrix. Inorganic glass in which the filler (A) is dispersed can be obtained, for example, by mixing the inorganic glass component and the filler (A) and sintering or the like. Furthermore, if the glass is organic glass, the filler (A) can be dispersed in the matrix resin that constitutes the organic glass. Examples of organic glass include organic glass using resins such as polycarbonate, acrylic resin, acrylic copolymer resin, and polyester as the matrix resin.

[0109] However, the glass may be given a granular texture by means other than filler (A). For example, a coating (A) may be formed on one surface of the glass, and the coating (A) may give it a granular texture. The coating (A) may contain filler (A) and give it a granular texture by filler (A), or it may be a coating that gives it a granular texture by components other than filler (A). Furthermore, if the coating (A) contains filler (A), the coating (A) may optionally contain binder components such as thermosetting resins and thermoplastic resins, and may also contain additives as appropriate. Alternatively, the coating (A) may be formed by coating a material containing filler (A) onto glass and sintering it. In this case, an inorganic material such as glass material may be used as the binder component.

[0110] This glass may be colored or tinted glass. By making this glass tinted, the granular texture can be colored to further enhance its design. In addition, it is possible to apply a color according to the coloring agent while maintaining a metallic feel that gives a gray impression due to reflected light from filler (A), etc. This glass may contain a coloring agent within the glass itself. For example, if this glass is inorganic glass, known coloring agents such as metal ions may be blended into the inorganic glass. If this glass is organic glass, coloring agents such as those exemplified in this interlayer may be blended into the organic glass. Furthermore, this glass may have a colored film containing a coloring agent formed on its surface. The colored film is a coating formed on the surface of the glass and may take any form as long as it contains a coloring agent, but the coating may contain binder components such as thermosetting resins or thermoplastic resins as needed, and may also contain additives as appropriate.

[0111] Furthermore, if the glass is colored glass, it is preferable that one of the following configurations is used: a coating (A) is formed on one surface and a colored film is formed on the other surface; a coating (A) is formed on one surface and a coloring agent is dispersed in the glass; or the glass contains a filler (A) and a colored film is formed on the other surface. In these configurations, the granular texture, or the granular texture and metallic texture, caused by the coating (A) or filler (A) can be masked by the colored film or the coloring agent dispersed in the glass, thereby providing a high level of design appeal.

[0112] This glass is a glass plate, and its thickness is not particularly limited, but is, for example, about 0.1 to 15 mm, preferably 0.5 to 5 mm.

[0113] This glass can be used in a variety of glass products, specifically single-pane glass, double-pane glass, laminated glass, etc. Furthermore, in glass products having two or more glass components, such as double-pane glass or laminated glass, it is sufficient if at least one of the glass components is made of this glass.

[0114] <Laminated glass> The present invention provides laminated glass. Laminated glass generally comprises two glass members (first and second glass members) and an interlayer film placed between these first and second glass members. The two glass members are bonded together via the interlayer film. Preferably, one side of the interlayer film is bonded to one glass member, and the other side is bonded to the other glass member. Laminated glass can be manufactured by placing an interlayer between two glass members and integrating them by heat-pressing or other means. Alternatively, it may be manufactured by preparing multiple resin layers, placing these multiple resin layers between two glass members to obtain a laminate, and then integrating the laminate by heat-pressing or other means.

[0115] [Laminated glass according to the first embodiment] In the first embodiment of the present invention, the laminated glass can use the above-described interlayer as the interlayer for the laminated glass. By using the above-described interlayer as the interlayer, the laminated glass can have a granular appearance, and by appropriately selecting the material of the filler (A), the appearance of the laminated glass can be made metallic.

[0116] The glass members used in the laminated glass according to the first embodiment are not particularly limited, and any glass plate may be used. The glass plate may be either inorganic glass or organic glass, but inorganic glass is preferred. Examples of inorganic glass are not particularly limited, but include clear glass, float glass, polished glass, patterned glass, wired glass, reinforcing glass, and colored glass. Furthermore, organic glass generally refers to what is called resin glass, and while not particularly limited, examples of organic glass composed of resins such as polycarbonate, acrylic resin, acrylic copolymer resin, and polyester can be found. The two glass members may be made of the same material or different materials. For example, one may be inorganic glass and the other organic glass, but it is preferable that both glass members be either inorganic glass or organic glass. Furthermore, the thickness of each glass component is not particularly limited, but is, for example, about 0.1 to 15 mm, preferably 0.5 to 5 mm. The thicknesses of each glass component may be the same or different, but it is preferable that they be the same.

[0117] When using colored glass, either one of the glass components may be made of colored glass. The means of making the glass component of colored glass are as described above, and their explanation will be omitted. In the case of colored glass, the colored film may be provided on the surface of the glass components 31 and 32 on the side of the interlayer 20, or on the surface of the glass components 31 and 32 opposite to the surface on the side of the interlayer 17 (see Figure 2).

[0118] In this embodiment, it is preferable that one of the glass members be made of colored glass. In that case, it is preferable that the glass member on the other side of the two glass members, which will be described later, be made of colored glass, and it is even more preferable that the glass member on the indoor side (for example, the interior of a car) be made of colored glass. By making the indoor side colored glass, it is possible to create a unique appearance with a granular texture when viewed from the outdoors (the outside of a car), while creating a calm impression when viewed from the indoors (the inside of a car), making it easier to further enhance the design appeal. Furthermore, if one of the glass components is colored glass, the interlayer may have a colored layer in addition to the filler-containing layer, but it is preferable that it does not have a colored layer. Similarly, if one of the glass components is colored glass, it is preferable that the other glass component be uncolored glass, for example, clear glass or float glass may be used.

[0119] [Laminated glass according to the second embodiment] In the second embodiment of the present invention, at least one of the two glass members (the first glass member) of the laminated glass can be the glass described above. By using the glass described above as the glass member, the laminated glass can also have a granular appearance. Furthermore, by appropriately selecting the material of the filler (A) in the glass, for example, the appearance of the laminated glass can also be made to have a metallic feel.

[0120] In the second embodiment, as long as one of the two glass members is the aforementioned glass, the other can be any glass plate. Specifically, the other glass member (second glass member) can be appropriately selected from the glass plates exemplified in the first embodiment. However, it is preferable that one glass member is the glass, while the other glass member is colored glass. By using colored glass, it becomes possible to mask the granular and metallic appearance imparted by the glass, resulting in a distinctive appearance with a granular or granular and metallic feel when viewed from one side of the laminated glass, while having a relatively subdued appearance when viewed from the other side.

[0121] Furthermore, in the laminated glass according to this embodiment, the main glass is often the glass member on one side of the two glass members, as described later, and it is more preferable that it is placed on the outdoor side (outside the vehicle in the case of an automobile). With the above configuration, a granular texture, or a granular and metallic texture, is easily expressed on the outdoor side, while on the indoor side (in the case of an automobile), the granular texture, or a granular and metallic texture, is suppressed, making it easier to create a calm impression. In particular, from the viewpoint of creating a calmer impression on the indoor side, it is more preferable that the main glass is placed on the outdoor side (one side) and the colored glass is placed on the indoor side (the other side).

[0122] In the second embodiment, any interlayer for laminated glass may be used, and an interlayer having the filler-containing layer described above may be used, but it is preferable to use an interlayer without a filler-containing layer. In other words, in the second embodiment, the interlayer for laminated glass is preferably composed of a second resin layer that does not contain filler (A). In this case, the interlayer for laminated glass may consist of a clear layer, a colored layer, or both a clear layer and a colored layer. Furthermore, the interlayer for laminated glass may have a single-layer structure or a multi-layer structure, and may also appropriately include a barrier layer, a reflective layer, etc.

[0123] Among these, the interlayer for laminated glass in the second embodiment is preferably a colored interlayer (hereinafter also referred to as "colored interlayer"), and more specifically, it is preferably an interlayer having a colored layer. By using a colored interlayer in addition to the glass, it becomes possible to mask the granular texture imparted by the glass with the colored interlayer, resulting in a distinctive appearance with a granular texture, or both granular and metallic texture, when viewed from one side of the laminated glass, while the appearance from the other side has a more subdued impression. In this case as well, it is preferable that the main glass pane is placed on the outdoor side (outside the vehicle in the case of an automobile), thereby giving the laminated glass a calm appearance when viewed from the indoor side. Furthermore, in the second embodiment, when a colored interlayer is used, it is preferable that one of the two glass panes be the main glass pane and the other be an uncolored glass member such as clear glass or float glass.

[0124] The laminated glass of the present invention preferably has a granularity value (G value) of 1.5 or higher. By making the granularity value (G value) of the laminated glass 1.5 or higher, the laminated glass can be given a granular texture, thereby enhancing its design appeal. In laminated glass, the granularity value (G value) is preferably 1.7 or higher, more preferably 2 or higher, even more preferably 2.5 or higher, and even more preferably 5 or higher, from the viewpoint of enhancing the granularity and giving it a more distinctive design. Furthermore, from the viewpoint of achieving a refined design with a moderate granularity, for example, a value of 15 or less, 12 or less, and even more preferably 10 or less is preferred. The granularity value (G value) of the laminated glass can be appropriately adjusted, for example, by the granularity value (G value) of the glass or interlayer described above.

[0125] The granularity value (G value) of laminated glass is sufficient if the granularity value (G value) measured from at least one surface of the laminated glass is within the above range, but it is also acceptable if both the granularity value (G value) measured from one surface and the other surface (i.e., the surface opposite to the first surface) are within the above range. Furthermore, if the granularity value (G value) measured from one surface is within the above range, the granularity value (G value) measured from the other surface may be the same as the granularity value (G value) measured from the one surface, or it may be lower than the granularity value (G value) measured from the one surface. If the granularity value (G value) measured from the other surface is lower than the granularity value (G value) measured from the one surface, similar to the interlayer described above, the granularity value (G value) measured from the other surface is preferably less than 1.5, more preferably 1 or less, and even more preferably 0.7 or less. Note that the lower limit of the granularity value (G value) is not particularly limited; for example, it may be 0, but practically it may be 0.1.

[0126] [Optical properties of laminated glass] From the viewpoint described in this Interlayer, the laminated glass of the present invention preferably has one or more surfaces that satisfy the following formula (2), where C is the bright intensity (Si(L)) at an incident angle of 45° to the laminated glass and D is the bright intensity (Si(L)) at an incident angle of 75°. |CD|≧0.01 (2) From the viewpoint described in this interlayer, the |CD| value is preferably 0.15 or higher, more preferably 0.2 or higher, even more preferably 0.8 or higher, even more preferably 1.5 or higher, and also preferably 45 or lower, more preferably 20 or lower, even more preferably 10 or lower, and even more preferably 5 or lower. The surface that satisfies formula (2) is at least one surface that has been measured to have a granularity value (G value) of 1.5 or higher (preferably 1.5 or higher and 15 or lower). In laminated glass, the |CD| value measured from the other surface may be the same as the |CD| value measured from the one surface, or it may be lower than the |CD| value measured from the one surface. If the |CD| value measured from the other surface is lower than the value measured from the one surface, the difference is preferably 0.1 or more, more preferably 0.2 or more, and also preferably 1 or more, from the same viewpoint as the interlayer. The above difference in |CD| values ​​is not particularly limited, but it is preferably 20 or less, and more preferably 10 or less.

[0127] From the viewpoint described in the Interlayer section, it is preferable that this laminated glass has at least one surface with a visible light reflectance (Rv(L)) of 5% or more. For laminated glass, it is desirable that the visible light reflectance (Rv(L)) of one of the measured surfaces be 5% or higher. However, if the granularity value (G value) is 1.5 or higher (preferably between 1.5 and 15), it is desirable that the visible light reflectance (Rv(L)) measured on one of the measured surfaces be 5% or higher. On a surface where the visible light reflectance (Rv(L)) is measured to be 5% or more, the visible light reflectance (Rv(L)) is more preferably 8% or more, even more preferably 10% or more, even more preferably 13% or more, and also preferably 30% or less, preferably 25% or less, more preferably 20% or less, and even more preferably 18% or less, as described in relation to this interlayer.

[0128] The laminated glass of the present invention preferably has a haze (Hz(L)) of 20% or less, as described in the section on the interlayer. More preferably, the haze (Hz(L)) is 15% or less, and even more preferably 10% or less. The haze (Hz(L)) of the laminated glass may be 0% or more, but practically, it is preferable to have a haze of 0.5% or more.

[0129] The laminated glass and glass of the present invention can be used as windows in various vehicles such as automobiles, aircraft, ships, and buildings, but it is preferable to use them as automotive glass. The automotive glass may be windshield glass (front glass), side glass, rear glass, or roof glass, but either side glass or rear glass is preferred. In each application, window glass is generally used as a component to separate the outdoors from the indoors, and preferably, in automotive applications, it is used as a component to separate the outside from the inside of the vehicle. [Examples]

[0130] The present invention will be described in more detail by reference to examples, but the present invention is not limited in any way by these examples.

[0131] The measurement and evaluation methods in this embodiment are as follows.

[0132] [Granular texture value (G value)] The granularity values ​​(G-values) of the laminated glass and glass obtained in each example and comparative example were measured as follows, when observed from a perpendicular direction on one and the other surface of the glass. Laminated glass or one side of a glass surface was illuminated with diffuse lighting from a white-painted hemisphere. The image was detected by the CCD chip of the multi-angle colorimeter "BYK-mac i 23mm" (manufactured by BYK-Gardner), and the brightness level was analyzed and calculated using a histogram.

[0133] [Si value] The luminous intensity (Si value) was measured for one or the other surface of the laminated glass and glass obtained in each example and comparative example at incident angles of 15°, 45°, and 75°. The measurement conditions for luminous intensity were as follows. LED lighting was shone onto the sample surface of laminated glass or one side of glass at three angles: 15°, 45°, and 75°. Images were acquired using a vertically mounted CCD chip in a multi-angle colorimeter "BYK-mac i 23mm" (manufactured by BYK-Gardner), and the brightness levels were analyzed and calculated using a histogram.

[0134] [Visible light reflectance] For each example and comparative example, the laminated glass and glass obtained were measured using a spectrophotometer (Hitachi High-Technologies Corporation "U-4100") in accordance with JIS 3106 (2019), and the visible light reflectance (Rv(Rv(L)), Rv(G)) was measured from one surface and the other surface of the laminated glass or glass.

[0135] [Hayes] For each example and comparative example, the haze was measured from the interior surface of the laminated glass in accordance with JIS K6714.

[0136] <Design evaluation> In a room exposed to sunlight, laminated glass or glass was positioned so that sunlight hit the exterior surface of the vehicle (i.e., the side on which the first layer is provided in the case of laminated glass), and the aesthetic quality was evaluated by visual observation from the outside of the vehicle using the following evaluation criteria. A: It has a strong shimmer and granular appearance. B: Has a weak shimmer and a granular appearance. C: It has a lustrous appearance, but lacks the granular or glittery look. D: It lacks both brilliance and graininess.

[0137] The components used in the examples and comparative examples are as follows. (1) Resin PVB: Polyvinyl butyral resin, acetalization degree 69 mol%, hydroxyl group content 30 mol%, acetylation degree 1 mol%, average degree of polymerization of PVA used in synthesis 1700, refractive index 1.48 (2) Plasticizers 3GO: Triethylene glycol di-2-ethylhexanoate (3) Filler (A) Multilayer filler 1: A flat plate shape with a three-layer structure as shown in Figure 1, consisting of an SiO2 layer with a refractive index of 1.46 as the middle layer and a TiO2 layer with a refractive index of 2.49 as the coating layer. Thickness ratio (each coating layer:middle layer = 1:17), D50: 20 μm, thickness 0.5 μm, aspect ratio: 2.8 Multilayer filler 2: A flat plate shape with a three-layer structure as shown in Figure 1, where the middle layer is an alumina layer with a refractive index of 2.6 and the coating layer is a TiO2 layer with a refractive index of 2.9. Thickness ratio (each coating layer:middle layer = 2:17), D50: 18 μm, thickness 0.3 μm, aspect ratio: 3 Multilayer filler 3: A flat plate shape with a three-layer structure as shown in Figure 1, consisting of a mica layer with a refractive index of 1.5 as the middle layer and a TiO2 layer with a refractive index of 2.9 as the coating layer. Thickness ratio (each coating layer:middle layer = 1:15), D50: 7 μm, thickness 0.5 μm, aspect ratio: 2.5 Multilayer filler 4: A flat plate shape with a three-layer structure as shown in Figure 1, where the middle layer is glass flake with a refractive index of 1.56 and the coating layer is a TiO2 layer with a refractive index of 2.9. Thickness ratio (each coating layer:middle layer = 1:18), D50: 83 μm, thickness 0.5 μm, aspect ratio: 3 Multilayer filler 5: A flat plate shape with a three-layer structure as shown in Figure 1, consisting of a middle layer of glass flakes with a refractive index of 1.47 and a coating layer of TiO2 with a refractive index of 2.9. Thickness ratio (each coating layer:middle layer = 1:16), D50: 200 μm, thickness 0.4 μm, aspect ratio: 2.8 Multilayer filler 6: A flat plate shape with a three-layer structure as shown in Figure 1, consisting of a middle layer of glass flakes with a refractive index of 1.47 and a coating layer of TiO2 with a refractive index of 2.9. Thickness ratio (each coating layer:middle layer = 1:19), D50: 90 μm, thickness 0.4 μm, aspect ratio: 2.6 Multilayer filler 7: A flat plate shape with a three-layer structure as shown in Figure 1, consisting of a middle layer of glass flakes with a refractive index of 1.47 and a coating layer of TiO2 with a refractive index of 2.9. Thickness ratio (each coating layer:middle layer = 1:14), D50: 75 μm, thickness 0.5 μm, aspect ratio: 2.9 Multilayer filler 8: A flat plate shape with a three-layer structure as shown in Figure 1, consisting of a natural mica layer with a refractive index of 1.51 as the middle layer and a TiO2 layer with a refractive index of 2.9 as the coating layer. Thickness ratio (each coating layer:middle layer = 1:20), D50: 21 μm, thickness 0.5 μm, aspect ratio: 42 (4) Colorants CB: Pigment Black 7 (CAS No. 1333-86-4), Carbon Black Pigment

[0138] [Example 1] (Fabrication of interlayers) According to the formulation in Table 1, filler (A) was mixed and dispersed with a plasticizer, then fed into an extruder together with polyvinyl butyral resin (PVB). The mixture was kneaded and extruded in the extruder to obtain an interlayer with a thickness of 760 μm. The interlayer consisted of a single layer of resin, and the filler (A) was oriented so that its plane direction was aligned with the plane direction of the interlayer.

[0139] (Fabrication of laminated glass) Two sheets of clear glass, each measuring 100 mm in length, 100 mm in width, and 2 mm in thickness, were prepared. The standard clear glass described in the specification was used. The interlayer obtained above was sandwiched between the two sheets of clear glass and pre-bonded using the vacuum backing method. The pre-bonded laminate was held in an autoclave at a temperature of 140°C and a pressure of 1.2 MPa for 20 minutes, and then the temperature was lowered to 23°C and returned to atmospheric pressure to complete the final bonding, resulting in a laminated glass in which the two sheets of clear glass were bonded together by the interlayer. The granularity, Rv, Si value, and haze of the obtained laminated glass were measured, and these are shown in Table 1 as characteristics of the interlayer and laminated glass. Each evaluation was performed assuming that one of the glass members of the obtained laminated glass was on the outside of the vehicle and the other glass member was on the inside of the vehicle.

[0140] [Examples 2-8] The procedure was carried out in the same manner as in Example 1, except that the type of filler (A) used was changed as shown in Table 1.

[0141] [Examples 9 and 10] According to the formulation in Table 1, filler (A) was mixed and dispersed with a plasticizer, and then fed into a co-extruder together with polyvinyl butyral resin (PVB). The mixture was thoroughly kneaded in the co-extruder until homogeneous to obtain a resin composition for forming the first layer. Also, according to the formulation in Table 1, a colorant was mixed and dispersed with a plasticizer, and then fed into the same co-extruder together with polyvinyl butyral resin (PVB). The mixture was thoroughly kneaded in the co-extruder until homogeneous to obtain a resin composition for forming the second layer. The resin compositions were co-extruded in the co-extruder to obtain an interlayer having a first layer with a thickness of 760 μm and a second layer with a thickness of 760 μm in that order. Laminated glass was then produced in the same manner as in Example 1. The obtained laminated glass was evaluated assuming that the first layer side was the outside of the vehicle and the second layer side was the inside of the vehicle.

[0142] [Comparative Example 1] According to the formulations in Table 1, a plasticizer and polyvinyl butyral resin (PVB) were fed into an extruder, kneaded in the extruder, and extruded to obtain an interlayer film with a thickness of 760 μm. Subsequently, laminated glass was prepared and evaluated in the same manner as in Example 1.

[0143] [Comparative Example 2] (Fabrication of interlayers) According to the formulations in Table 1, a plasticizer and polyvinyl butyral resin (PVB) were fed into an extruder and kneaded in the extruder to obtain a resin composition. From the obtained resin composition, first and second layers of the thicknesses shown in Table 1 were formed and laminated on both sides of a nano-reflective film (reflective layer, manufactured by Toray Industries, Inc., "Picasus", product number: GM40, PET sheet) to create a three-layer interlayer structure of first layer / reflective layer / second layer. Subsequently, laminated glass was prepared and evaluated in the same manner as in Example 1.

[0144] [Comparative Example 3] The procedure was carried out in the same manner as in Comparative Example 2, except that the colorant was mixed and dispersed with the plasticizer according to the formulation in Table 1, and then fed into an extruder together with polyvinyl butyral resin (PVB). These were then thoroughly kneaded in the extruder until homogeneous to obtain a resin composition for forming the second layer.

[0145] [Examples 11, 12, Comparative Examples 4, 5] A 6mm thick single-layer glass containing a filler was prepared by dispersing a filler in a glass raw material and sintering it. In Example 11, aluminum (Al) was used as the filler, with a content of 0.1% by mass. In Example 12, aluminum (Al) was used as the filler, with a content of 0.05% by mass. In Comparative Example 4, aluminum (Al) was used as the filler, with a content of 0.001% by mass. In Comparative Example 5, silver (Ag) was used as the filler, with a content of 0.01% by mass.

[0146] [Table 1]

[0147] In each of the above embodiments, the granularity value (G value) observed from at least one surface of the interlayer for laminated glass, laminated glass, or glass fell within the specified range. As a result, a granular texture gave the appearance a glossy feel, enhancing the aesthetic appeal. In contrast, in the comparative examples, the granularity value (G value) was outside the specified range, resulting in insufficient granularity and an inability to enhance the aesthetic appeal. [Explanation of Symbols]

[0148] 10 Middle layer (base material) 11, 12 Covering layer 20 Interlayer for laminated glass 21 Filler-containing layer 22 Second resin layer 30 Laminated glass 31 First glass component 32 Second glass component

Claims

1. An interlayer for laminated glass comprising a thermoplastic resin and a filler (A), An interlayer for laminated glass, wherein the granularity value (G value) of the laminated glass produced by bonding two clear glass plates together via the interlayer for laminated glass is 1.5 or more and 15 or less.

2. The interlayer film for laminated glass according to claim 1, wherein the average particle size of the filler (A) is 5 μm or more and 250 μm or less.

3. The interlayer film for laminated glass according to claim 2, wherein the average particle size of the filler (A) is 5 μm or more and 100 μm or less.

4. The interlayer for laminated glass according to any one of claims 1 to 3, wherein the content of the filler (A) in the interlayer for laminated glass is 0.01% by mass or more and 0.5% by mass or less.

5. The interlayer film for laminated glass according to any one of claims 1 to 3, wherein the filler (A) has luminescence.

6. The interlayer film for laminated glass according to any one of claims 1 to 3, wherein the filler (A) contains a metal oxide.

7. The interlayer film for laminated glass according to any one of claims 1 to 3, wherein the filler (A) contains at least one from the group consisting of titanium dioxide, silicon dioxide, indium oxide, niobium oxide, zinc oxide, antimony oxide, tungsten oxide, aluminum oxide, mica, and glass.

8. The laminated glass interfilm according to any one of claims 1 to 3, wherein when the refractive index of the filler (A) is A, and the refractive index of the resin that is most abundant by mass in the laminated glass interfilm is B, the formula (1) is satisfied. |A-B|≧0.5 (1)

9. An interlayer for laminated glass according to any one of claims 1 to 3, comprising a coloring agent.

10. The interlayer for laminated glass according to any one of claims 1 to 3, wherein the haze of the laminated glass produced by bonding two clear glass plates together via the interlayer for laminated glass is 0.5% or more and 20% or less.

11. An interlayer for laminated glass according to any one of claims 1 to 3, wherein when the luminous intensity (Si value) at an incident angle of 45° is C and the luminous intensity (Si value) at an incident angle of 75° is D, the interlayer for laminated glass according to any one of claims 1 to 3 has one or more surfaces that satisfy formula (2). |CD|≧0.01 (2)

12. The laminated glass interfilm according to any one of claims 1 to 3, having at least one surface of the laminated glass produced by bonding two clear glass plates together via the laminated glass interfilm having a visible light reflectance (Rv) of 5% or more.

13. A first glass member and a second glass member, The laminated glass interfilm is as described in any one of claims 1 to 3, A laminated glass in which the interlayer for laminated glass is disposed between the first glass member and the second glass member.

14. Glass with a granularity value (G value) of 1.5 or higher.

15. It comprises a first glass member, a second glass member, and an interlayer for laminated glass, The interlayer film for laminated glass is placed between the first glass member and the second glass member. Laminated glass with a granularity value (G value) of 1.5 or higher and 15 or lower.

16. The laminated glass according to claim 15, wherein the interlayer for the laminated glass is colored.

17. The laminated glass according to claim 15 or 16, wherein the granularity value (G value) of the first glass member is 1.5 or more, and the second glass member is colored glass.

Images