JPH06211549A - Intermediate film for laminated glass and laminated glass - Google Patents

Abstract

PURPOSE:To obtain a laminated glass without the adhesion being lowered with time by the outdoor exposure and temp., excellent in lead-through resistance and scattering preventiveness of glass and having heat reflectivity, etc. CONSTITUTION:An adhesion control layer 22 consisting of a polar modified silicone oil is formed on one side of a base layer 21 consisting of a plasticized polyvinyl acetal resin, and an adhesion strength control layer 23 consisting of a nonpolar modified silicone oil is formed on the other side to obtain an intermediate film 20. A glass sheet 10 and a glass sheet 10 with a metal oxide or metal layer 11 formed on the inner surface are bound together so that the adhesion strength control layer 22 is abutted on the metal oxide or metal layer 11 to obtain a laminated glass 30. Otherwise, an adhesion strength control layer 24 consisting of a mixture of the polar modified silicone oil and nonpolar modified silicone oil is formed on both sides of the base layer 21 to obtain an intermediate film 20'. The intermediate film 20' is adhered between the two glass sheets 10 to obtain the laminated glass 30'.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interlayer film for laminated glass and a laminated glass used for a laminated glass which is particularly excellent in penetration resistance and glass scattering prevention and has high functions such as heat ray reflection.

[0002]

2. Description of the Related Art Laminated glass in which an interlayer film made of a plasticized polyvinyl acetal resin is adhered between glass plates is excellent in transparency, weather resistance, penetration resistance and glass shatterproof property, and can be used in automobiles, aircrafts and buildings. Widely used for windshields such as.

This type of laminated glass is required to have high penetration resistance and glass scattering prevention. In order to improve these performances, it is necessary to properly adjust the adhesive force between the glass plate and the intermediate film.

That is, in the case of a laminated glass in which the adhesive force between the glass plate and the intermediate film is too small, the glass is peeled off from the film and scattered by the impact from the outside, and conversely, the adhesive force between the glass plate and the intermediate film is too large. In glass, both the glass and the film are broken and penetrated by an external impact.

In order to properly adjust the adhesive force between the glass plate and the intermediate film, usually, an adhesive force adjusting agent (sometimes referred to as an impact strength increasing agent) is kneaded and contained in the intermediate film, or
Alternatively, a method of adhering to the surface is adopted. Of course, the water content in the interlayer film is also adjusted.

As the adhesive strength adjusting agent, an alkali metal salt or an alkaline earth metal salt of carboxylic acid, a modified silicone oil or the like is generally used (for example, Japanese Patent Publication No. 45-3).
No. 2071 and Japanese Patent Publication No. 55-29950).

By the way, in recent years, there has been proposed a laminated glass in which a layer having a high function is provided on the inner side surface of a glass plate to impart a high function such as selective light transmittance and transparent conductivity. For example, heat-reflecting glass, dew condensation-preventing conductive glass, and the like, and these special laminated glasses have begun to be used in buildings and automobiles. These characteristics are mainly obtained by forming a highly functional thin film on the glass surface by a vacuum deposition method, a sputtering method, or the like.

As for the structure of the layer having a high function, for example, heat-reflecting glass for buildings often has a structure in which a metal oxide layer (heat-reflecting layer) is provided on the inner surface of a glass plate. In many heat ray reflective glasses for automobiles, a layer (heat ray reflection layer) in which a metal layer such as silver is sandwiched between metal oxides is provided on the inner surface of a glass plate. In many cases, other layers having high functions are also formed of a metal oxide layer or a metal layer.

Laminated glass using these metal oxide layers or metal layers (heat ray reflection layer) is mainly composed of glass plate / heat ray reflection layer / intermediate film / glass sheet, glass plate / intermediate film / heat ray reflection sheet / intermediate. The high-performance layer provided on the glass plate or sheet is arranged inside the laminated glass to protect it. Therefore, the metal oxide or metal layer and the intermediate film come into contact with each other.

[0010]

Even in a laminated glass having such a metal oxide layer or a metal layer, a high degree of penetration resistance and glass scattering prevention property are required, and these properties are imparted. Therefore, it is necessary to appropriately adjust the adhesive force between the metal oxide or the metal layer and the intermediate film.

However, unlike the ordinary laminated glass having no metal oxide layer or metal layer, the one in which the adhesiveness adjusting agent made of a carboxylic acid metal salt is kneaded into the intermediate film or attached to the surface is different from the ordinary laminated glass having no metal oxide layer or metal layer. There is a problem that the adhesive force between the two tends to decrease with the irradiation of ultraviolet rays over time, and the glass plate is more likely to peel off from the interlayer film due to impact or the like.

In the case where the adhesive film made of modified silicone oil is kneaded into the interlayer film, the change with time due to outdoor exposure or ultraviolet irradiation is small, but the change with time in the adhesive force is large, and the change due to impact or the like. The glass plate is easier to peel off than the interlayer film.

This decrease in adhesive strength is caused by the gradual bleeding at the interface between the metal oxide layer or the metal layer and the intermediate film because the modified silicone oil is a liquid and is not completely compatible with the resin and the plasticizer. it is conceivable that.

It should be noted that, in the case where the adhesiveness adjusting agent made of modified silicone oil is adhered to the surface of the intermediate film, the heat ray reflecting surface side (the metal oxide layer or the metal layer side) and the glass plate side have the intermediate film. There is a problem that the adhesive strength to the glass plate is significantly different and the penetration resistance is deteriorated.

The present invention is intended to solve the above problems, and its object is to prevent the penetration resistance and the glass from scattering without causing a decrease in adhesive strength over time due to outdoor exposure, ultraviolet irradiation and temperature. It is intended to provide an interlayer film for laminated glass and a laminated glass which are used for laminated glass having excellent properties and high functionality such as heat ray reflectivity.

[0016]

In order to achieve the above object, the present invention comprises four inventions. The interlayer film for laminated glass according to the invention of claim 1 is provided on a base layer made of a plasticized polyvinyl acetal resin, an adhesion adjusting layer made of polar modified silicone oil provided on one surface of the base layer, and on the other surface of the base layer. And an adhesive force adjusting layer made of non-polar modified silicone oil.

The interlayer film for laminated glass according to the invention of claim 2 comprises a base layer made of a plasticized polyvinyl acetal resin, and an adhesive force made of a mixture of polar modified silicone oil and nonpolar modified silicone oil provided on both sides of the base layer. It is composed of an adjustment layer.

In the laminated glass of the invention of claim 3, the interlayer film for laminated glass according to claim 1 is provided between the glass plate and the glass plate having the metal oxide layer or the metal layer formed on the inner surface side. The metal oxide layer or the metal layer is adhered so that the adhesion adjusting layer made of polar modified silicone oil is in contact with the metal oxide layer or the metal layer.

In the laminated glass of the invention of claim 4, the interlayer film for laminated glass according to claim 2 is provided between the glass plate and the glass plate on which the metal oxide layer or the metal layer is formed on the inner surface side. It is glued.

The base layer of the intermediate film used in the present invention is composed of a plasticized polyvinyl acetal resin obtained by adding a plasticizer to the polyvinyl acetal resin. As the polyvinyl acetal resin, a resin of the type conventionally used for an interlayer film of laminated glass, for example, a resin obtained by acetalizing polyvinyl alcohol with an aldehyde having 4 to 10 carbon atoms is used.

In particular, the butyralization degree is 60 to 70 mol%,
An interlayer film using a polyvinyl butyral resin having a degree of polymerization of 1000 to 2000 is preferably used. The thickness of the interlayer film is
Generally, it is 0.5 to 1.5 mm.

As the plasticizer, known plasticizers used for this type of interlayer film, for example, triethylene glycol di-2-ethylhexoate, triethylene glycol dicaprylate, triethylene glycol di-n. -Heptate, triethylene glycol di-2-ethylbutyrate, tetraethylene glycol di-n-heptate and the like are preferably used.

In general, 20 to 60 parts by weight of such a plasticizer is mixed with 100 parts by weight of the resin. If the content of the plasticizer is less than 20 parts by weight, the penetration resistance of the laminated glass decreases. On the other hand, when the content of the plasticizer exceeds 60 parts by weight, the plasticizer oozes out, which adversely affects the adhesiveness of the laminated glass. The base layer of the intermediate film may contain known additives such as an ultraviolet absorber, a light stabilizer and an antioxidant.

For the base layer of the intermediate film, a polyvinyl acetal resin is blended with a required amount of a plasticizer, and if necessary, other additives are blended, and this is kneaded and melted by, for example, an extruder to form a sheet. Can be obtained. It can also be obtained by pressing after kneading and melting with a roll.

According to the first aspect of the present invention, the adhesion adjusting layer made of polar modified silicone oil is provided on one surface of the base layer, and the adhesion adjusting layer made of non-polar modified silicone oil is provided on the other surface of the base layer. The polar and non-polar modified silicone oil may contain other components as required.

Examples of the polar modified silicone oil include carboxyl modified silicone oil, epoxy modified silicone oil, ester modified silicone oil, amino modified silicone oil and alcohol modified silicone oil. Examples of the non-polar modified silicone oil include ether modified silicone oil, α-methylstyrene modified silicone oil, α-olefin modified silicone oil, higher fatty acid modified silicone oil, carnauba modified silicone oil and the like. These modified silicone oils are viscous liquids obtained by reacting polysiloxane with a compound to be modified.

These modified silicone oils are generally water.
Alternatively, dissolve it in a suitable solvent and apply it on the surface of the base film of the intermediate film.
Then, the adhesive force adjusting layer is formed by drying. Polar modified
The amount of recon oil is usually 10^-7-10^-1g /
m², Preferably 10^-6-10^-2g / m²Is. this
Application amount is 10^-7g / m²If less than, the effect of adjusting the adhesive strength
Is not obtained, on the contrary, 10^-1g / m²If it exceeds
Is reduced. Also, the coating amount of non-polar modified silicone oil
Is usually 10^-7-10^-1g / m², Preferably 10 ^-Five~
10^-2g / m²Is. This application amount is 10^-7g / m²Not yet
When it is full, the effect of adjusting the adhesive strength cannot be obtained, and conversely 10^-1g
/ M²If it exceeds, the adhesive strength will decrease.

According to the second aspect of the present invention, an adhesive force adjusting layer made of a mixture of polar modified silicone oil and non-polar modified silicone oil is provided on both surfaces of the base layer. The same modified silicone oil as described above is used as the polar modified silicone oil and the non-polar modified silicone oil. In addition, this mixture may contain other components as necessary.

The weight ratio of the polar modified silicone oil to the nonpolar modified silicone oil varies depending on the degree of modification, but is preferably in the range of 5/95 to 95/5. If the weight ratio of both is out of the above range, the Pammel value may be different between the front and back surfaces of the laminated glass.

A mixture of these modified silicone oils is
Generally dissolved in water or a suitable solvent, the surface of the base film of the intermediate film
It is coated on and dried to form an adhesive strength adjusting layer. Strange
The amount of silicone oil mixture applied is usually 10^-6-10
^-1g / m², Preferably 10 ^-Five~ 5 x 10^-2g / m²so
is there. This application amount is 10^-6g / m²If less than the adhesive strength
The effect of adjustment cannot be obtained, and conversely 10^-1g / m²A place beyond
If this happens, the adhesive strength will decrease.

In the invention of claims 1 and 2, the modified silicone oil may be applied by, for example, a method of spraying or applying the modified silicone oil or a solution thereof onto the base layer surface of the intermediate film, or transferring or printing from the roll surface. And a method of immersing in modified silicone oil or its solution.

In order to improve the degassing property, when the film surface is embossed by an embossing roll in the step of extruding the intermediate film, the modified silicon oil or its solution is continuously applied to the embossing roll to form a film on the film surface. It is also possible to apply modified silicone oil simultaneously with the embossing process.

When the film surface is embossed, for example, a solvent which does not dissolve the film surface so much as not to deform the surface emboss is used, or a solvent which is compatible with the film surface to some extent is used for compatibility. In some cases, a solvent that does

To produce a laminated glass using the thus obtained intermediate film, the above intermediate film is sandwiched between the glass plate and the glass plate having the metal oxide layer or the metal layer formed on the inner surface side. To do. As the glass plate, generally, an inorganic or organic transparent glass plate is used.

The metal oxide layer or the metal layer is for imparting high functions such as transparent conductivity and heat ray reflectivity. For imparting transparent conductivity, for example, a mixture of indium oxide and tin oxide ( A coating film of ITO, tin oxide, zinc oxide, gold, silver, copper or the like is formed. For imparting heat ray reflectivity, for example, a metal coating of gold, silver, copper, tin, aluminum, nickel, palladium and alloys or mixtures thereof is formed.

These metal oxide layers or metal layers may be formed directly on the inner surface of the glass plate, or the metal oxide layers or metal layers may be formed on a suitable sheet once, and the functionality The sheet may be adhered to the inner surface of the glass plate via an appropriate adhesive film (intermediate film). The metal oxide layer or the metal layer may be formed not only on the inner surface side of the glass plate but also on both the inner surface side and the outer surface side of the glass plate.

According to the third aspect of the present invention, the adhesion adjusting layer made of polar modified silicone oil provided on one surface of the base layer and the adhesion adjusting layer made of nonpolar modified silicone oil provided on the other surface of the base layer. In the case of using the intermediate film composed of (1) and (2), the glass plate is sandwiched so that the adhesion adjusting layer made of polar modified silicone oil abuts the metal oxide layer or the metal layer of the glass plate.

In the case of using the intermediate film having the adhesion adjusting layer made of the mixture of the polar modified silicone oil and the nonpolar modified silicone oil on both surfaces of the base layer as in the invention of claim 4, the above-mentioned method is used. There is no limit.

Next, this laminated body is heated and pressed using a device such as an autoclave. Thus, the laminated glass is manufactured. In this case, the adhesive force between the glass plate on which the metal oxide layer or the metal layer is formed and the intermediate film and the adhesive force between the glass plate on which the metal oxide layer or the metal layer is not formed and the intermediate film are almost equal to each other. It is preferable that they are equivalent from the viewpoint of penetration resistance. The adhesive strength can be adjusted by variously changing the type, amount, and functional group equivalent of the modified silicone oil.

FIG. 1 is an exploded sectional view showing a typical example of the interlayer film for laminated glass and laminated glass of the present invention. In FIG. 1A, 10 is a glass plate, 11 is a metal oxide layer or a metal layer, 21 is a base layer of an intermediate film, 22 is a polar modified silicone oil layer, 23 is a nonpolar modified silicone oil layer, and 20 is a laminated glass. The intermediate film 30 is laminated glass.

In FIG. 1B, 10 is a glass plate, 1
1 is a metal oxide layer or a metal layer, 21 is a base layer of an intermediate film, 2
4 is a mixture layer of polar modified silicone oil and non-polar modified silicone oil, 20 'is an intermediate film for laminated glass, 3
0'is a laminated glass.

According to the invention of claim 3 which uses the interlayer film of claim 1, the metal oxide or the metal layer imparts high functionality (heat ray reflectivity, etc.), and the adhesive strength adjustment is made of polar modified silicone oil. By arranging the layer on the metal oxide or metal layer side and arranging the adhesive force adjusting layer made of non-polar modified silicone oil on the glass side, there is no great difference in adhesive force between the respective surfaces of the interlayer film. Adjusted appropriately.

According to the invention of claim 4 which uses the interlayer film of claim 2, high functionality such as heat ray reflectivity is imparted by the metal oxide or the metal layer, and both polar and non-polar modified silicone oil is provided. By using the adhesive force adjusting layer composed of a mixture of the above, the polar modified silicone oil in the adhesive force adjusting layer effectively adjusts the adhesive force on the surface of the metal oxide or the metal layer, and The polar-modified silicone oil effectively adjusts the adhesive force on the glass surface, and the adhesive force is appropriately adjusted on each surface of the interlayer film without any large difference.

Moreover, the modified silicone oils described above have better moisture resistance than the carboxylic acid metal salts in both polar and non-polar, and these modified silicone oils are not kneaded into the base layer of the intermediate film. Therefore, there is no room for aging due to bleeding, and there is always a certain amount in layers.
It is also possible to prevent the adhesive force from changing with time due to temperature. In addition, compared to kneading, it is effective even in a small amount.

According to the second and fourth aspects of the present invention, it is possible to provide an adhesive force adjusting layer made of a mixture of the same modified silicone oil on both surfaces of the intermediate film, and to make an adhesive film made of different modified silicone oil on both surfaces of the intermediate film. As compared with the first and third aspects of the invention in which the force adjusting layer is provided, there is also an advantage that the number of coating steps of the adhesion adjusting agent can be reduced.

[0045]

EXAMPLES Examples and comparative examples of the present invention will be shown below. Example 1 As a polyvinyl acetal resin, a butyralization degree of 65
Mol%, acetylation degree 1 mol%, residual vinyl alcohol 34 mol% and polymerization degree 1700 in polyvinyl butyral resin 100 parts by weight, as a plasticizer triethylene glycol di-2-ethylbutyrate 40 parts by weight, ultraviolet absorber 0.2 parts by weight and 0.2 parts by weight of antioxidant are mixed.
This mixture was well kneaded with two rolls heated to 80 ° C to form a thickness of about 0.8 mm, and this was heated and pressurized to 150 ° C with a press regulated by a spacer to give a thickness of 0.76 mm.
A base layer of the intermediate film of

On one surface of the base layer of this intermediate film, the following formula (1)
Polyether-modified silicone oil represented by (m = 10
~ 20, n = 10-20, x = 2-8) acetone solution
Was thinly applied with gauze and dried. Polyether modified silicone
The amount of conoil applied is about 10 ^-3g / m²Met. Well
On the other surface of the base layer of this interlayer film,
Carboxyl-modified silicone oil (m = 5-15, n
= 10-20, y = 2-8) acetone solution with gauze
It was applied thinly and dried. Carboxyl modified silicone oil
The application amount of is about 10^-Fourg / m²Met. Then this
The moisture content should be 0.4-0.5% by weight in a constant temperature and humidity room.
Adjusted to.

[0047]

[Chemical 1]

[0048]

[Chemical 2]

The intermediate film thus obtained was cut into a length of 305 mm × width of 305 mm, and a conductive glass having the same size glass / ITO structure so that the carboxyl-modified silicon oil layer was in contact with the conductive glass ITO. It was sandwiched between (thickness 2.5 mm) and float glass (thickness 2.5 mm) and pre-bonded with a roll. Then, a laminated glass was manufactured by pressure bonding in an autoclave at 130 ° C. under a pressure of 13 kg / cm ² . The laminated glass was subjected to a Panmel test before and after UV irradiation by the following method. The results are shown in Table 2.

Light resistance test According to the light resistance test of JIS R3212, laminated glass is placed at a distance of 230 mm from a 750 W quartz glass mercury lamp and irradiated at 45 ° C. for 200 hours. Judge the Panmel value of the laminated glass before and after irradiation. Pummel test Before and after irradiation, the laminated glass was adjusted to a temperature of -18 ° C ± 0.6 ° C for 16 hours, and the central portion (150 mm long × 150 mm wide) of this laminated glass had a 0.45 kg head. The glass was crushed with a hammer until the particle diameter of the glass became 6 mm or less, and the degree of exposure of the film after the glass was partially peeled off was determined by Table 1 as a Panmel value.

[0051]

[Table 1]

In the present invention, a laminated glass having a Pammel value in the range of 3 to 7 and having a small difference on both sides is preferable because it is excellent in penetration resistance and glass scattering prevention property.
If the Pummel value is less than 3, the adhesive strength will be low and the ability to prevent the glass from scattering due to impact or the like will be reduced. On the other hand, when the Pammel value exceeds 7, the adhesive strength becomes high, and the penetration resistance of the laminated glass due to impact or the like decreases.

Example 2 As a polyvinyl acetal resin, a butyralization degree of 65
Mol%, acetylation degree 1 mol%, residual vinyl alcohol 34 mol% and polymerization degree 1700 in polyvinyl butyral resin 100 parts by weight, as a plasticizer triethylene glycol di-2-ethylbutyrate 40 parts by weight, ultraviolet absorber 0.2 parts by weight, 0.2 parts by weight of an antioxidant, and the polyether-modified silicone oil represented by the above formula (1).
Mix 025 parts by weight. This mixture was well kneaded by a two-roll heated to 80 ° C to form a thickness of about 0.8 mm, and this was heated and pressed at 150 ° C with a press regulated by a spacer to form an interlayer film having a thickness of 0.76 mm. A base layer of

On one surface of the base layer of this intermediate film, the above formula (1)
An acetone solution of polyether-modified silicone oil represented by the following was applied thinly with gauze and dried. The amount of polyether-modified silicone oil applied was about 10 ^-3 g / m ² .
Further, on the other surface of the base layer of this intermediate film, an acetone solution of the carboxyl-modified silicone oil represented by the formula (2) was thinly applied with gauze and dried. The amount of carboxyl-modified silicone oil applied was about 10 ^-4 g / m ² . Then, the water content of this is 0.4 to 0.5% by weight in a constant temperature and humidity chamber.
I adjusted it to be.

The interlayer film thus obtained was cut into a length of 305 mm × width of 305 mm, and a glass / ZnO / Ag / ZnO structure having the same size was formed so that the carboxyl-modified silicon oil layer was in contact with ZnO of the conductive glass. Conductive glass (thickness 2.5 mm) and float glass (thickness 2.5)
mm) and pre-bonded with a roll. Then, a laminated glass was manufactured by pressure bonding in an autoclave at 130 ° C. under a pressure of 13 kg / cm ² . With respect to this laminated glass, a Pammel test was conducted before and after irradiation with ultraviolet rays. The results are shown in Table 2.

Example 3 As a polyvinyl acetal resin, a butyralization degree of 65 was used.
Mol%, acetylation degree 1 mol%, residual vinyl alcohol 34 mol% and polymerization degree 1700 in polyvinyl butyral resin 100 parts by weight, as a plasticizer triethylene glycol di-2-ethylbutyrate 40 parts by weight, ultraviolet absorber 0.2 parts by weight, 0.2 parts by weight of an antioxidant, and the polyether-modified silicone oil represented by the above formula (1).
Mix 025 parts by weight. This mixture was well kneaded by a two-roll heated to 80 ° C to form a thickness of about 0.8 mm, and this was heated and pressed at 150 ° C with a press regulated by a spacer to form an interlayer film having a thickness of 0.76 mm. A base layer of

On both sides of the base layer of this intermediate film, the above formula (1)
An acetone solution of a mixture of the polyether-modified silicone oil represented by (4) and the carboxyl-modified silicone oil represented by the above formula (2) (weight ratio 10 / latter 1) was thinly applied with gauze and dried. The coating amount is about 10 on both sides.
^{It was -3} g / m ² . Then, this was adjusted in a constant temperature and humidity chamber so that the water content was 0.4 to 0.5% by weight.

The interlayer film thus obtained was cut into a length of 305 mm × width of 305 mm, and conductive glass (thickness 2.5 mm) and float glass (thickness 2.5 mm) having the same glass / ITO structure were cut. It was sandwiched between them and pre-bonded with a roll. Then, in an autoclave at 130 ° C, 13 kg /
Laminated glass was manufactured by pressure bonding with a pressure of cm ² . With respect to this laminated glass, a Pammel test was conducted before and after irradiation with ultraviolet rays. The results are shown in Table 2.

Comparative Example 1 In Example 1, an acetone solution of a carboxyl-modified silicone oil represented by the above formula (2) was thinly applied with gauze on both sides of the base layer of the obtained intermediate film, and dried. The coating amount was about 10 ⁻⁴ g / m ² on both sides. Then, this was adjusted in a constant temperature and humidity chamber so that the water content was 0.4 to 0.5% by weight to obtain an interlayer film.

Example 1 except that this intermediate film was used
A laminated glass was manufactured in the same manner as in. With respect to this laminated glass, a Pammel test was conducted before and after irradiation with ultraviolet rays. The results are shown in Table 2.

Comparative Example 2 In Example 1, an acetone solution of the polyether-modified silicone oil represented by the above formula (1) was thinly applied with gauze on both sides of the base layer of the obtained intermediate film, and dried. The coating amount was about 10 ^-3 g / m ² on both sides. Then, this was adjusted in a constant temperature and humidity chamber so that the water content was 0.4 to 0.5% by weight to obtain an interlayer film.

Example 1 except that this intermediate film was used
A laminated glass was manufactured in the same manner as in. With respect to this laminated glass, a Pammel test was conducted before and after irradiation with ultraviolet rays. The results are shown in Table 2.

Comparative Example 3 The interlayer film obtained in Example 1 was 305 mm in length × 3 in width.
Cut it to 05 mm, and float glass (thickness 2.5 mm) of the same size and conductive glass (thickness 2.5 mm) with the same dimensions so that the carboxyl-modified silicone oil layer contacts the float glass. ) And was pre-bonded with a roll. Then, a laminated glass was manufactured by pressure bonding in an autoclave at 130 ° C. under a pressure of 13 kg / cm ² . With respect to this laminated glass, a Pammel test was conducted before and after irradiation with ultraviolet rays. The results are shown in Table 2.

Comparative Example 4 A polyvinyl acetal resin having a butyralization degree of 65
Mol%, acetylation degree 1 mol%, residual vinyl alcohol 34 mol% and polymerization degree 1700 in polyvinyl butyral resin 100 parts by weight, as a plasticizer triethylene glycol di-2-ethylbutyrate 40 parts by weight, ultraviolet absorber 0.2 part by weight, 0.2 part by weight of antioxidant, polyether modified silicone oil represented by the above formula (1) 0.
Mix 025 parts by weight and 0.2 parts by weight of magnesium acetate. This mixture was well kneaded with a two roll heated to 80 ° C. to form a thickness of about 0.8 mm, and this was heated and pressed at 150 ° C. by a press regulated by a spacer to give a thickness of 0.1 mm.
A 76 mm interlayer film was obtained.

No modification silicone oil was applied to both surfaces of this intermediate film, and this intermediate film was measured in a length of 305 mm × width of 305 mm.
Float glass with the same dimensions (2.5m thick)
m) and conductive glass having a glass / ITO structure (thickness 2.5 mm), and pre-bonded with a roll. Then, in an autoclave at 130 ° C, 13 kg / cm
Laminated glass was manufactured by pressure bonding at a pressure of ² . With respect to this laminated glass, a Pammel test was conducted before and after irradiation with ultraviolet rays. The results are shown in Table 2.

[0066]

[Table 2]

[0067]

The interlayer film for laminated glass and the laminated glass of the present invention are configured as described above, and the laminated glass obtained by using the interlayer film of the present invention is heat ray reflective by a metal oxide or a metal layer. High functionality such as sex is given,
In particular, polar-modified silicone oil exhibits appropriate adhesion on the surface of metal oxide or metal layer, non-polar-modified silicone oil exhibits appropriate adhesion on the glass surface, and there is a large difference in adhesive strength between each surface of the interlayer film. It does not occur and is adjusted appropriately, and the decrease in adhesive strength over time due to outdoor exposure, ultraviolet irradiation and temperature is prevented.

Therefore, according to the present invention, it is possible to obtain a laminated glass which is excellent in penetration resistance and glass scattering prevention property for a long period of time and which has high functions such as heat ray reflectivity. Suitable for use in window glass for buildings, etc.

[Brief description of drawings]

FIG. 1 is an exploded cross-sectional view showing two typical examples of an interlayer film for laminated glass and laminated glass of the present invention.

[Explanation of symbols]

10 Glass Plate 11 Metal Oxide Layer or Metal Layer 20 Intermediate Film 20 ′ Intermediate Film 21 Base Layer of Intermediate Film 22 Adhesion Adjustment Layer Made of Polar Modified Silicon Oil 23 Adhesion Adjustment Layer Made of Nonpolar Modified Silicon Oil 24 Polar Modified Silicon Adhesion adjusting layer made of a mixture of oil and non-polar modified silicone oil 30 laminated glass 30 'laminated glass

Claims (4)

[Claims] 1. A base layer made of a plasticized polyvinyl acetal resin, an adhesion adjusting layer made of a polar modified silicone oil provided on one surface of the base layer, and a non-polar modified silicone oil provided on the other surface of the base layer. An interlayer film for laminated glass, which comprises an adhesive force adjusting layer. 2. A base layer made of a plasticized polyvinyl acetal resin, and an adhesive force adjusting layer made of a mixture of polar modified silicone oil and nonpolar modified silicone oil provided on both sides of the base layer. A featured interlayer film for laminated glass. 3. The interlayer film for laminated glass according to claim 1 between the glass plate and the glass plate having the metal oxide layer or the metal layer formed on the inner surface side thereof is the metal oxide layer or the metal layer. A laminated glass characterized in that an adhesion adjusting layer made of polar modified silicone oil is adhered so as to abut. 4. The interlayer film for laminated glass according to claim 2, which is bonded between a glass plate and a glass plate having a metal oxide layer or a metal layer formed on the inner surface side. Laminated glass.