WO2018043236A1 - Resin composition and use thereof - Google Patents

Abstract

The resin composition for a laminated glass interlayer and the resin composition for a solar cell encapsulant according to the present invention include an ionomer of an ethylene-unsaturated carboxylic acid copolymer (A) and a silane coupling agent having an amino group (B), the metal ions constituting the ethylene-unsaturated carboxylic acid copolymer (A) including monovalent metal ions and polyvalent metal ions.

Description

Resin composition and use thereof

The present invention relates to a resin composition for a laminated glass interlayer film, a laminated glass interlayer film and a laminated glass, and a resin composition for a solar cell encapsulant, a solar cell encapsulant, and a solar cell module.

As a laminated glass intermediate film or a solar cell sealing material, a film composed of an ionomer of an ethylene / unsaturated carboxylic acid copolymer is known.

As a technique relating to such a laminated glass interlayer film, for example, a technique described in Patent Document 1 (Japanese Patent Publication No. 2009-512766) can be cited.
Patent Document 1 includes at least one layer containing an ionomer or an ionomer blend having a thickness of 0.25 mm or more and incorporating a partially neutralized α, β-ethylenically unsaturated carboxylic acid. A polymer sheet having one or more ionomers or ionomer blends in an amount ranging from about 1 to about 60% based on the total amount of neutralization of the α, β-ethylenically unsaturated carboxylic acid. A polymer sheet is described that includes valent metal ions and one or more polyvalent metal ions in an amount ranging from about 40 to about 99%.

Special table 2009-512863 publication

The technical level required for various properties of laminated glass interlayers is increasing. The present inventors have found the following problems with respect to a laminated glass interlayer film.
First, as described in Patent Document 1, a laminated glass interlayer film composed of an ionomer of an ethylene / unsaturated carboxylic acid copolymer containing both monovalent metal ions and polyvalent metal ions has water resistance. Although good, the optical properties and glass adhesion performance were not fully satisfactory.
Here, according to the study by the present inventors, it has been clarified that when the ratio of monovalent metal ions constituting the ionomer is increased, the optical characteristics of such a laminated glass interlayer film are improved to some extent. However, when the ratio of monovalent metal ions constituting the ionomer is increased, the water resistance of the laminated glass interlayer film is deteriorated and it is difficult to improve the glass adhesion.
That is, the present inventors have a trade-off relationship between the optical properties and water resistance of the laminated glass interlayer film made of ionomer, and the trade-off relationship is the same as that of monovalent metal ions in the ionomer. It has been clarified that it cannot be sufficiently improved only by adjusting the ratio with the valent metal ion, and furthermore, it has been clarified that it is extremely difficult to improve the glass adhesion while achieving both optical properties and water resistance. That is, the present inventors have found that there is room for improvement in terms of improving the optical properties and water resistance in a well-balanced manner and further improving the glass adhesiveness in the laminated glass interlayer film made of conventional ionomers. I found it.
Moreover, the solar cell sealing material also had the same problem as the laminated glass intermediate film.

The present invention has been made in view of the above circumstances, and is a resin composition for laminated glass interlayer films and solar cell encapsulating materials that has an excellent balance of optical properties and water resistance and has excellent adhesion to glass and the like. Is to provide.

The inventors of the present invention have made extensive studies in order to achieve the above problems. As a result, the ionomer containing both monovalent metal ions and polyvalent metal ions can be combined with a silane coupling agent having an amino group to improve the trade-off relationship, with a good balance of optical properties and water resistance. It has been found that it can be improved and the adhesion to glass or the like can be improved, leading to the present invention.

That is, according to the present invention, there are the following resin composition for laminated glass interlayer film, laminated glass interlayer film and laminated glass, and resin composition for solar cell encapsulant, solar cell encapsulant, and solar cell module. Provided.

[1]
A resin composition used for forming a laminated glass interlayer film,
An ionomer (A) of an ethylene / unsaturated carboxylic acid copolymer, and a silane coupling agent (B) having an amino group,
A resin composition for laminated glass interlayer films, wherein the metal ions constituting the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer include a monovalent metal ion and a polyvalent metal ion.
[2]
In the resin composition for laminated glass interlayer film according to the above [1],
A resin composition for a laminated glass interlayer film, wherein a molar ratio of the polyvalent metal ion to the monovalent metal ion in the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer is 0.1 or more and 10 or less.
[3]
In the resin composition for laminated glass interlayer films according to the above [1] or [2],
A resin composition for laminated glass interlayer films, wherein the monovalent metal ion includes one or more selected from lithium ions, potassium ions, sodium ions, silver ions, mercury ions, and copper ions.
[4]
In the resin composition for laminated glass interlayer films according to any one of [1] to [3] above,
The polyvalent metal ions are calcium ion, magnesium ion, zinc ion, aluminum ion, barium ion, beryllium ion, strontium ion, copper ion, cadmium ion, mercury ion, tin ion, lead ion, iron ion, cobalt ion and nickel ion. The resin composition for laminated glass intermediate films containing 1 type, or 2 or more types selected from these.
[5]
In the resin composition for laminated glass interlayer films according to any one of [1] to [4] above,
A resin composition for a laminated glass interlayer film, wherein the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer has a neutralization degree of 5% to 95%.
[6]
In the resin composition for laminated glass interlayer films according to any one of [1] to [5] above,
The resin composition for laminated glass intermediate films whose haze measured by the following method is less than 1.0%.
(Method)
A 120 mm × 75 mm × 0.4 mm film composed of the laminated glass interlayer film resin composition is obtained. Next, the obtained film was sandwiched between glass plates of 120 mm × 75 mm × 3.2 mm, held at 140 ° C. for 5 minutes in a vacuum laminator, pressed at 0.1 MPa (gauge pressure) for 3 minutes, and laminated glass was obtained. obtain. Next, the haze of the obtained laminated glass is measured with a haze meter according to JIS K7136.
[7]
In the resin composition for laminated glass interlayer films according to any one of [1] to [6] above,
A resin composition for laminated glass interlayer films, wherein the length of the cloudy portion measured by the following method is 5 mm or less.
(Method)
A 120 mm × 75 mm × 0.4 mm film composed of the laminated glass interlayer film resin composition is obtained. Next, the obtained film was sandwiched between glass plates of 120 mm × 75 mm × 3.2 mm, held at 140 ° C. for 5 minutes in a vacuum laminator, pressed at 0.1 MPa (gauge pressure) for 3 minutes, and laminated glass was obtained. obtain. Next, the obtained laminated glass is immersed in warm water at 90 ° C. for 2 hours. Subsequently, in the cloudy part produced in the edge part of the said laminated glass, the length of the said cloudy part perpendicular | vertical with respect to the end surface of the said laminated glass is measured.
[8]
In the resin composition for laminated glass interlayer films according to any one of [1] to [7] above,
The resin composition for laminated glass intermediate films whose adhesive strength with respect to the glass plate measured by the following method is 10 N / 15mm or more.
(Method)
A 120 mm × 75 mm × 0.4 mm film composed of the laminated glass interlayer film resin composition is obtained. Next, the obtained film was laminated on the non-tin surface of a 120 mm × 75 mm × 3.9 mm glass plate, held at 140 ° C. for 3 minutes in a vacuum laminator, and pressed at 0.1 MPa (gauge pressure) for 30 minutes. And the film is adhered to the non-tin surface of the glass plate. Next, the film is pulled away from the glass plate at a tensile speed of 100 mm / min, and the maximum stress is calculated as the adhesive strength (N / 15 mm) to the glass plate.
[9]
In the resin composition for laminated glass interlayer films according to any one of the above [1] to [8],
The ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer is composed of a monovalent metal ion ionomer (A1) of the ethylene / unsaturated carboxylic acid copolymer and an ethylene / unsaturated carboxylic acid copolymer. The resin composition for laminated glass intermediate films containing a polyvalent metal ion ionomer (A2).
[10]
In the resin composition for laminated glass interlayer films according to any one of [1] to [9] above,
A resin composition for laminated glass interlayer films, wherein the unsaturated carboxylic acid constituting the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer contains at least one selected from acrylic acid and methacrylic acid.
[11]
In the resin composition for laminated glass interlayer films according to any one of [1] to [10] above,
Laminated glass having a content of the amino group-containing silane coupling agent (B) of 0.001% by mass or more and 5% by mass or less when the entire resin composition for laminated glass interlayer film is 100% by mass. A resin composition for an interlayer film.
[12]
In the resin composition for laminated glass interlayer films according to any one of [1] to [11] above,
In the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer, when the total of the structural units constituting the ethylene / unsaturated carboxylic acid copolymer is 100% by mass, it is derived from the unsaturated carboxylic acid. A resin composition for a laminated glass interlayer film, wherein the structural unit to be peeled is 5 mass% or more and 35 mass% or less.
[13]
The laminated glass intermediate film comprised with the resin composition for laminated glass intermediate films as described in any one of said [1] thru | or [12].
[14]
A laminated glass interlayer film according to the above [13],
Transparent plate-like members provided on both surfaces of the laminated glass interlayer film,
Laminated glass with.
[15]
Laminated glass according to [14] above, wherein the haze measured by a haze meter in accordance with JIS K7136 is less than 1.0%.
[16]
The laminated glass according to [14] or [15], wherein the length of the cloudy portion measured by the following method is 5 mm or less.
(Method)
The laminated glass is immersed in warm water at 90 ° C. for 2 hours. Subsequently, in the cloudy part produced in the edge part of the said laminated glass, the length of the said cloudy part perpendicular | vertical with respect to the end surface of the said laminated glass is measured.
[17]
A resin composition used to form a solar cell encapsulant,
An ionomer (A) of an ethylene / unsaturated carboxylic acid copolymer, and a silane coupling agent (B) having an amino group,
The resin composition for solar cell sealing materials in which the metal ion which comprises the ionomer (A) of the said ethylene and unsaturated carboxylic acid type copolymer contains a monovalent metal ion and a polyvalent metal ion.
[18]
In the resin composition for a solar cell sealing material according to the above [17],
Resin composition for solar cell encapsulant having a molar ratio of the polyvalent metal ion to the monovalent metal ion in the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer of 0.1 to 10 .
[19]
In the resin composition for a laminated solar cell sealing material according to the above [17] or [18],
A resin composition for a solar cell encapsulant, wherein the monovalent metal ion comprises one or more selected from lithium ions, potassium ions, sodium ions, silver ions, mercury ions, and copper ions.
[20]
In the resin composition for a solar cell sealing material according to any one of [17] to [19] above,
The polyvalent metal ions are calcium ion, magnesium ion, zinc ion, aluminum ion, barium ion, beryllium ion, strontium ion, copper ion, cadmium ion, mercury ion, tin ion, lead ion, iron ion, cobalt ion and nickel ion. The resin composition for laminated solar cell sealing materials containing 1 type, or 2 or more types selected from.
[21]
In the resin composition for a solar cell sealing material according to any one of [17] to [20] above,
A resin composition for a solar cell encapsulant, wherein the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer has a neutralization degree of 5% to 95%.
[22]
In the resin composition for a solar cell sealing material according to any one of [17] to [21] above,
The resin composition for solar cell sealing materials whose haze measured by the following method is less than 1.0%.
(Method)
A 120 mm × 75 mm × 0.4 mm film composed of the resin composition for solar cell encapsulant is obtained. Next, the obtained film was sandwiched between glass plates of 120 mm × 75 mm × 3.2 mm, held at 140 ° C. for 5 minutes in a vacuum laminator, pressed at 0.1 MPa (gauge pressure) for 3 minutes, and laminated glass was obtained. obtain. Next, the haze of the obtained laminated glass is measured with a haze meter according to JIS K7136.
[23]
In the resin composition for a solar cell sealing material according to any one of [17] to [22] above,
The resin composition for solar cell sealing materials whose length of the cloudiness part measured by the following method is 5 mm or less.
(Method)
A 120 mm × 75 mm × 0.4 mm film composed of the resin composition for solar cell encapsulant is obtained. Next, the obtained film was sandwiched between glass plates of 120 mm × 75 mm × 3.2 mm, held at 140 ° C. for 5 minutes in a vacuum laminator, pressed at 0.1 MPa (gauge pressure) for 3 minutes, and laminated glass was obtained. obtain. Next, the obtained laminated glass is immersed in warm water at 90 ° C. for 2 hours. Subsequently, in the cloudy part produced in the edge part of the said laminated glass, the length of the said cloudy part perpendicular | vertical with respect to the end surface of the said laminated glass is measured.
[24]
In the resin composition for a solar cell sealing material according to any one of [17] to [23] above,
The solar cell sealing material resin composition whose adhesive strength with respect to the glass plate measured by the following method is 10 N / 15mm or more.
(Method)
A 120 mm × 75 mm × 0.4 mm film composed of the resin composition for solar cell encapsulant is obtained. Next, the obtained film was laminated on the non-tin surface of a 120 mm × 75 mm × 3.9 mm glass plate, held at 140 ° C. for 3 minutes in a vacuum laminator, and pressed at 0.1 MPa (gauge pressure) for 30 minutes. And the film is adhered to the non-tin surface of the glass plate. Next, the film is pulled away from the glass plate at a tensile speed of 100 mm / min, and the maximum stress is calculated as the adhesive strength (N / 15 mm) to the glass plate.
[25]
In the resin composition for a solar cell sealing material according to any one of [17] to [24] above,
The ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer is composed of a monovalent metal ion ionomer (A1) of the ethylene / unsaturated carboxylic acid copolymer and an ethylene / unsaturated carboxylic acid copolymer. The resin composition for solar cell sealing materials containing a polyvalent metal ion ionomer (A2).
[26]
In the resin composition for a solar cell sealing material according to any one of [17] to [25] above,
A resin composition for a solar cell encapsulant, wherein the unsaturated carboxylic acid constituting the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer contains at least one selected from acrylic acid and methacrylic acid.
[27]
In the resin composition for a solar cell sealing material according to any one of the above [17] to [26],
The solar cell whose content of the said silane coupling agent (B) which has an amino group is 0.001 to 5 mass% when the whole solar cell sealing material resin composition is 100 mass%. Resin composition for sealing materials.
[28]
In the resin composition for a solar cell sealing material according to any one of the above [17] to [27],
In the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer, when the total of the structural units constituting the ethylene / unsaturated carboxylic acid copolymer is 100% by mass, it is derived from the unsaturated carboxylic acid. The resin composition for solar cell sealing materials whose structural unit is 5 mass% or more and 35 mass% or less.
[29]
The solar cell sealing material comprised with the resin composition for solar cell sealing materials as described in any one of said [17] thru | or [28].
[30]
The solar cell encapsulant according to the above [29], wherein the haze measured by a haze meter in accordance with JIS K7136 is less than 1.0%.
[31]
The solar cell module which contains the solar cell sealing material as described in said [29] in a structure.

According to the present invention, it is possible to realize a laminated glass interlayer film and a solar cell encapsulating material that are excellent in performance balance of glass adhesion, optical characteristics, and water resistance.

The above-described object and other objects, features, and advantages will be further clarified by a preferred embodiment described below and the following drawings attached thereto.

It is sectional drawing which showed typically an example of the structure of the laminated glass of embodiment which concerns on this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The figure is a schematic and does not match the actual dimensional ratio. In the numerical range, “X to Y” represents X or more and Y or less unless otherwise specified. Further, (meth) acryl means acryl or methacryl.

1. 1 is a cross-sectional view schematically showing an example of the structure of a laminated glass 10 according to an embodiment of the present invention.
The resin composition for laminated glass interlayer film (P) according to the present embodiment is a resin composition used for forming the laminated glass interlayer film 11, and is an ionomer of an ethylene / unsaturated carboxylic acid copolymer ( A) and an amino group-containing silane coupling agent (B), and the metal ions constituting the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer are monovalent metal ions and polyvalent metal ions including.

According to the study by the present inventors, a laminated glass interlayer film composed of an ionomer of an ethylene / unsaturated carboxylic acid copolymer containing both monovalent metal ions and polyvalent metal ions has good water resistance. It was revealed that the optical properties and the glass adhesion were not fully satisfactory.
Furthermore, according to the study by the present inventors, when the ratio of monovalent metal ions constituting the ionomer is increased, the optical properties of such a laminated glass interlayer film are improved to some extent. It became clear that the property deteriorated and the glass adhesion was insufficient.
That is, the present inventors have a trade-off relationship between the optical properties and water resistance of the laminated glass interlayer film made of ionomer, and the trade-off relationship is the same as that of monovalent metal ions in the ionomer. It has been clarified that it cannot be sufficiently improved only by adjusting the ratio with the valent metal ion, and furthermore, it has been clarified that it is extremely difficult to improve the glass adhesion while achieving both optical properties and water resistance. That is, the present inventors have found that there is room for improvement in terms of improving the optical properties and water resistance in a well-balanced manner and further improving the glass adhesiveness in the laminated glass interlayer film made of conventional ionomers. I found it.

The inventors of the present invention have made extensive studies in order to achieve the above problems. As a result, by combining the ionomer (A) of an ethylene / unsaturated carboxylic acid copolymer containing a monovalent metal ion and a polyvalent metal ion with the silane coupling agent (B) having an amino group, the above trade It was found that the OFF relationship can be improved, the optical properties and water resistance can be improved in a well-balanced manner, and the glass adhesiveness can be fully expressed.
That is, the resin composition for laminated glass interlayer film (P) according to this embodiment comprises an ionomer (A) of an ethylene / unsaturated carboxylic acid copolymer containing a monovalent metal ion and a polyvalent metal ion and an amino group. By including the silane coupling agent (B), it is possible to achieve a good balance of optical properties and water resistance performance and realize sufficient glass adhesion.
The reason for this is not clear, but the amino group of the silane coupling agent (B) having an amino group is coordinated to a polyvalent metal in the ethylene / unsaturated carboxylic acid copolymer, thereby producing an ethylene / unsaturated carboxylic acid type. By inhibiting the crystal growth of the copolymer ionomer (A), the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer containing monovalent metal ions and polyvalent metal ions has good water resistance. This is considered to be because the optical characteristics are further improved while maintaining. In addition, since the amino group of the silane coupling agent (B) having an amino group is bonded to the carboxyl group in the ethylene / unsaturated carboxylic acid copolymer, the resin composition for laminated glass interlayer film according to this embodiment ( According to P), it is possible to obtain a laminated glass interlayer film not only excellent in optical properties and water resistance but also excellent in adhesion to a transparent plate member.
Further, according to the resin composition for laminated glass interlayer film (P) according to this embodiment, the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer containing monovalent metal ions and polyvalent metal ions is used. By combining the silane coupling agent (B) having an amino group, the glass composition, optical characteristics and water resistance are maintained while maintaining the processability (film forming property) of the resin composition for laminated glass interlayer film (P). The balance of performance can be improved.
Thereby, the laminated glass intermediate film and laminated glass which were excellent in the external appearance and excellent in the performance balance of glass adhesiveness, an optical characteristic, and water resistance can be obtained.

Hereafter, each component which comprises the resin composition for laminated glass intermediate films which concerns on this embodiment is demonstrated.

<Ionomer of ethylene / unsaturated carboxylic acid copolymer (A)>
The ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer according to the present embodiment comprises at least a part of the carboxyl group for a polymer obtained by copolymerizing ethylene and at least one unsaturated carboxylic acid. A resin neutralized with metal ions. Examples of the ethylene / unsaturated carboxylic acid copolymer include a copolymer containing ethylene and an unsaturated carboxylic acid.

Examples of the unsaturated carboxylic acid constituting the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer according to this embodiment include acrylic acid, methacrylic acid, 2-ethylacrylic acid, crotonic acid, maleic acid, Examples thereof include fumaric acid, itaconic acid, maleic anhydride, fumaric anhydride, itaconic anhydride, monomethyl maleate, monoethyl maleate and the like.
Among these, the unsaturated carboxylic acid preferably contains at least one selected from acrylic acid and methacrylic acid from the viewpoint of productivity and hygiene of the ethylene / unsaturated carboxylic acid copolymer. These unsaturated carboxylic acids may be used individually by 1 type, and may be used in combination of 2 or more type. In addition, an ethylene / unsaturated carboxylic acid-based ionomer containing the above unsaturated carboxylic acid such as acrylic acid or methacrylic acid as a constituent unit in one or more ionomers of ethylene / unsaturated carboxylic acid copolymer A copolymer may be added to obtain an ionomer (A) of an ethylene / unsaturated carboxylic acid copolymer.
Laminated glass by adding an ethylene / unsaturated carboxylic acid copolymer to an ionomer (A) to an ionomer of an ethylene / unsaturated carboxylic acid copolymer containing monovalent metal ions and polyvalent metal ions. While maintaining the processability (film forming property) of the resin composition for an interlayer film (P), it is possible to express higher glass adhesion and further improve the performance balance between optical characteristics and water resistance.
In the present embodiment, a particularly preferred ethylene / unsaturated carboxylic acid copolymer is an ethylene / (meth) acrylic acid copolymer.

In the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer according to the present embodiment, when the total of the structural units constituting the ethylene / unsaturated carboxylic acid copolymer is 100% by mass, it is derived from ethylene. The structural unit is preferably 65% by mass or more and 95% by mass or less, more preferably 75% by mass or more and 92% by mass or less.
When the structural unit derived from ethylene is not less than the above lower limit value, the heat resistance, mechanical strength, water resistance, workability and the like of the resulting laminated glass interlayer film can be further improved. Moreover, transparency, a softness | flexibility, adhesiveness, etc. of the laminated glass intermediate film obtained can be made more favorable that the structural unit guide | induced from ethylene is below the said upper limit.

In the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer according to the present embodiment, when the total of the structural units constituting the ethylene / unsaturated carboxylic acid copolymer is 100% by mass, the unsaturated carboxylic acid The structural unit derived from the acid is preferably 5% by mass or more and 35% by mass or less, more preferably 8% by mass or more and 25% by mass or less.
When the structural unit derived from the unsaturated carboxylic acid is at least the above lower limit, the transparency, flexibility, adhesiveness, and the like of the resulting laminated glass interlayer film can be further improved. Moreover, when the structural unit derived from the unsaturated carboxylic acid is not more than the above upper limit value, the heat resistance, mechanical strength, water resistance, workability and the like of the obtained laminated glass interlayer film can be improved.

In the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer according to the present embodiment, preferably, when the total of the structural units constituting the ethylene / unsaturated carboxylic acid copolymer is 100% by mass, A structural unit derived from 0% by mass or more and 30% by mass or less, more preferably 0% by mass or more and 25% by mass or less of another copolymerizable monomer may be included. Other copolymerizable monomers include unsaturated esters such as vinyl esters such as vinyl acetate and vinyl propionate; methyl (meth) acrylate, ethyl (meth) acrylate, isobutyl (meth) acrylate, and (meth) acrylic. And (meth) acrylic acid esters such as n-butyl acid and 2-ethylhexyl (meth) acrylate. When the structural unit derived from another copolymer monomer is contained within the above range, it is preferable in that the flexibility of the resulting laminated glass interlayer film is improved.

The monovalent metal ion constituting the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer according to this embodiment is selected from lithium ion, potassium ion, sodium ion, silver ion, mercury ion, copper ion, and the like. It is preferable to include one or more selected from lithium ions, potassium ions, and sodium ions, and more preferable to include at least one selected from lithium ions and sodium ions. More preferably, it contains sodium ions.

The polyvalent metal ions constituting the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer according to the present embodiment include calcium ions, magnesium ions, zinc ions, aluminum ions, barium ions, beryllium ions, and strontium ions. , Copper ions, cadmium ions, mercury ions, tin ions, lead ions, iron ions, cobalt ions and nickel ions, preferably one or more selected from calcium ions, magnesium ions, zinc ions, aluminum It is more preferable to include one or more selected from ions and barium ions, more preferable to include at least one selected from zinc ions and magnesium ions, and particularly preferable to include zinc ions.

In the resin composition for laminated glass interlayer film (P) according to the present embodiment, the molar ratio of polyvalent metal ions to monovalent metal ions in the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer (multivalent) The number of moles of metal ions / number of moles of monovalent metal ions) is preferably 0.1 or more and 0.2 or more from the viewpoint of improving the water resistance of the resulting laminated glass interlayer film. Is more preferable and 0.3 or more is still more preferable.
In the laminated glass interlayer resin composition (P) according to the present embodiment, the molar ratio of the polyvalent metal ion to the monovalent metal ion in the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer is From the viewpoint of improving the optical properties of the resulting laminated glass interlayer film, it is preferably 10 or less, more preferably 8 or less, further preferably 5 or less, and preferably 3 or less. Particularly preferred.

In the resin composition for laminated glass interlayer film (P) according to this embodiment, the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer is, for example, a monovalent ethylene / unsaturated carboxylic acid copolymer. The metal ion ionomer (A1) and the polyvalent metal ion ionomer (A2) of an ethylene / unsaturated carboxylic acid copolymer can be used.
This adjusts the mixing ratio of the monovalent metal ion ionomer (A1) of the ethylene / unsaturated carboxylic acid copolymer and the polyvalent metal ion ionomer (A2) of the ethylene / unsaturated carboxylic acid copolymer. Thus, the ratio of the monovalent metal ion to the polyvalent metal ion in the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer can be easily adjusted.

The degree of neutralization of the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer according to this embodiment is not particularly limited, but the flexibility and adhesiveness, mechanical strength, workability, etc. of the resulting laminated glass interlayer film 95% or less is preferable, 90% or less is more preferable, 80% or less is further preferable, 70% or less is further more preferable, and 60% or less is still more preferable.
Further, the degree of neutralization of the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer according to the present embodiment is not particularly limited, but the transparency, heat resistance, water resistance, etc. of the obtained laminated glass interlayer film are further improved. From the viewpoint of improvement, it is preferably 5% or more, more preferably 10% or more, further preferably 15% or more, and particularly preferably 20% or more.
Here, the degree of neutralization of the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer is neutralized by metal ions out of all the carboxyl groups contained in the ethylene / unsaturated carboxylic acid copolymer. Refers to the percentage (%) of carboxyl groups.

The production method of the ethylene / unsaturated carboxylic acid copolymer constituting the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer according to the present embodiment is not particularly limited, and may be produced by a known method. it can. For example, each polymerization component can be obtained by radical copolymerization at high temperature and high pressure. The ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer according to this embodiment can be obtained by reacting the ethylene / unsaturated carboxylic acid copolymer with a metal compound. Moreover, what is marketed may be used for the ionomer (A) of an ethylene / unsaturated carboxylic acid copolymer.

In this embodiment, the melt flow rate (MFR) of the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer, measured under conditions of 190 ° C. and 2160 g load, in accordance with JIS K7210: 1999 is 0. 0.01 g / 10 min or more and 50 g / 10 min or less is preferable, 0.1 g / 10 min or more and 30 g / 10 min or less is more preferable, and 0.1 g / 10 min or more and 10 g / 10 min or less. It is particularly preferred. When the MFR is at least the above lower limit, the processability of the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer can be further improved. When the MFR is less than or equal to the above upper limit value, the heat resistance and mechanical strength of the resulting laminated glass interlayer film can be further improved.

The content of the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer in the laminated glass interlayer resin composition (P) according to this embodiment is the laminated glass interlayer resin composition (P). When the total is 100 mass%, preferably 50 mass% or more and 99.999 mass% or less, more preferably 70 mass% or more and 99.995 mass% or less, and further preferably 80 mass% or more and 99.99 mass% or less. Especially preferably, it is 90 mass% or more and 99.95 mass% or less. When the content of the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer is within the above range, the balance of optical properties, interlayer adhesion, and water resistance of the resulting laminated glass is further improved. can do.

<Silane coupling agent having amino group (B)>
Examples of the silane coupling agent (B) having an amino group according to this embodiment include N- (2-aminoethyl) -3-aminopropyltrimethoxysilane and N- (2-aminoethyl) -3-amino. Propylmethyldimethoxysilane, N- (2-aminoethyl) -3-aminopropylmethyldiethoxysilane, N- (2-aminoethyl) -3-aminopropyltriethoxysilane, N- (2-aminomethyl) -3 -Aminopropyltrimethoxysilane, N- (2-aminomethyl) -3-aminopropylmethyldimethoxysilane, N- (2-aminomethyl) -3-aminopropylmethyldiethoxysilane, N- (2-aminomethyl) -3-Aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltrie Xysilane, 3-triethoxysilyl-N- (1,3-dimethyl-butylidene) propylamine, N-phenyl-3-aminopropyltrimethoxysilane, N-phenyl-3-aminopropyltriethoxysilane, N- ( Vinylbenzyl) -2-aminoethyl-3-aminopropyltrimethoxysilane hydrochloride, N- (2-aminomethyl) -8-aminooctyltrimethoxysilane, N- (2-aminoethyl) -8-aminooctyl Examples include trimethoxysilane, N- (2-aminomethyl) -8-aminooctyltriethoxysilane, N- (2-aminoethyl) -8-aminooctyltriethoxysilane, and the like.

In the resin composition for laminated glass interlayer film (P) according to this embodiment, the content of the silane coupling agent (B) having an amino group depends on the optical properties, water resistance and interlayer adhesion performance of the obtained laminated glass. From the viewpoint of further improving the balance, when the entire resin composition for laminated glass interlayer film (P) is 100% by mass, it is preferably 0.001% by mass to 5% by mass, more preferably 0.005%. It is not less than 2% by mass and more preferably not less than 0.01% by mass and not more than 1% by mass.

<Other ingredients>
The resin composition for laminated glass interlayer film (P) according to this embodiment has an ionomer (A) and an amino group of an ethylene / unsaturated carboxylic acid copolymer within a range not impairing the object of the present invention. Components other than the silane coupling agent (B) can be contained. Other components are not particularly limited. For example, plasticizers, antioxidants, ultraviolet absorbers, wavelength converters, antistatic agents, surfactants, colorants, light stabilizers, foaming agents, lubricants, crystal nuclei Agent, crystallization accelerator, crystallization retarder, catalyst deactivator, heat ray absorbent, heat ray reflective agent, heat radiation agent, thermoplastic resin other than ionomer (A) of ethylene / unsaturated carboxylic acid copolymer, heat Silane coupling agents other than curable resins, inorganic fillers, organic fillers, impact modifiers, slip agents, crosslinking agents, crosslinking aids, tackifiers, silane coupling agents having amino groups (B), Processing aids, mold release agents, hydrolysis inhibitors, heat stabilizers, anti-blocking agents, antifogging agents, flame retardants, flame retardant aids, light diffusing agents, antibacterial agents, antifungal agents, dispersants and other resins Etc. Other components may be used individually by 1 type, and may be used in combination of 2 or more type.

<Haze>
In the resin composition for laminated glass interlayer film (P) according to this embodiment, the haze measured by the following method is preferably less than 1.0%, more preferably 0.8% or less, and 0 More preferably, it is 6% or less. When the haze is not more than the above upper limit, the transparency of the resulting laminated glass can be made better.
In order to achieve such haze, the molar ratio of the polyvalent metal ion to the monovalent metal ion in the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer, or the laminated glass intermediate according to the present embodiment The content of the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer in the membrane resin composition (P) and the silane coupling agent (B) having an amino group may be appropriately adjusted. It is particularly important to include an appropriate amount of the silane coupling agent (B) having an amino group while increasing the ratio of monovalent metal ions in the ionomer (A) of the unsaturated carboxylic acid copolymer.
Although the lower limit of the said haze of the resin composition for laminated glass interlayer films (P) which concerns on this embodiment is not specifically limited, For example, it is 0.01% or more.
By using the resin composition for laminated glass interlayer film (P) according to this embodiment, the haze of the laminated glass according to this embodiment can be made less than 1.0%. The preferred haze of the laminated glass is the same as described above.
(Method)
A film of 120 mm × 75 mm × 0.4 mm composed of the resin composition for laminated glass interlayer film (P) according to this embodiment is obtained. Next, the obtained film was sandwiched between glass plates of 120 mm × 75 mm × 3.2 mm, held at 140 ° C. for 5 minutes in a vacuum laminator, pressed at 0.1 MPa (gauge pressure) for 3 minutes, and laminated glass was obtained. obtain. Next, the haze of the obtained laminated glass is measured with a haze meter according to JIS K7136.

<Length of cloudy part>
In the resin composition for laminated glass interlayer film (P) according to this embodiment, the length of the cloudy part measured by the following method is preferably 5 mm or less, more preferably 2 mm or less, and 1 mm or less. It is particularly preferred that When the length of the cloudy portion is not more than the above upper limit, the water resistance of the resulting laminated glass can be made better.
In order to achieve such a length of the cloudy portion, the molar ratio of the polyvalent metal ion to the monovalent metal ion in the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer, If the content of the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer and the silane coupling agent (B) having an amino group in the resin composition for laminated glass interlayer film (P) is appropriately adjusted. However, it is particularly important to increase the ratio of polyvalent metal ions in the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer.
As for the lower limit of the length of the said cloudy part of the resin composition for laminated glass interlayer films (P) which concerns on this embodiment, 0 mm is preferable.
By using the resin composition for laminated glass interlayer film (P) according to this embodiment, the length of the cloudy part of the laminated glass according to this embodiment can be 5 mm or less. The preferable value of the cloudy portion of the laminated glass is the same as described above.
(Method)
A film of 120 mm × 75 mm × 0.4 mm composed of the resin composition for laminated glass interlayer film (P) according to this embodiment is obtained. Next, the obtained film was sandwiched between glass plates of 120 mm × 75 mm × 3.2 mm, held at 140 ° C. for 5 minutes in a vacuum laminator, pressed at 0.1 MPa (gauge pressure) for 3 minutes, and laminated glass was obtained. obtain. Next, the obtained laminated glass is immersed in warm water at 90 ° C. for 2 hours. Subsequently, in the cloudy part produced in the edge part of the said laminated glass, the length of the said cloudy part perpendicular | vertical with respect to the end surface of the said laminated glass is measured.

<Adhesive strength to glass plate>
In the resin composition for laminated glass interlayer film (P) according to this embodiment, the adhesive strength to the glass plate measured by the following method is preferably 10 N / 15 mm or more, and more preferably 15 N / 15 mm or more. 20 N / 15 mm or more is particularly preferable. When the adhesive strength to the glass plate is at least the lower limit value, the interlayer adhesion of the resulting laminated glass can be made better.
In order to achieve such adhesive strength to the glass plate, the ionomer (A) and amino group of the ethylene / unsaturated carboxylic acid copolymer in the resin composition for laminated glass interlayer film (P) according to this embodiment are used. What is necessary is just to adjust suitably content etc. of the silane coupling agent (B) which has group.
(Method)
A film of 120 mm × 75 mm × 0.4 mm composed of the resin composition for laminated glass interlayer film (P) according to this embodiment is obtained. Next, the obtained film was laminated on the non-tin surface of a 120 mm × 75 mm × 3.9 mm glass plate, held at 140 ° C. for 3 minutes in a vacuum laminator, and pressed at 0.1 MPa (gauge pressure) for 30 minutes. And the film is adhered to the non-tin surface of the glass plate. Next, the film is pulled away from the glass plate at a tensile speed of 100 mm / min, and the maximum stress is calculated as the adhesive strength (N / 15 mm) to the glass plate.

Although the resin composition for laminated glass interlayer film has been described above, the same resin composition as described above can be used as the resin composition for solar cell encapsulant, and the same effect can be obtained.

2. Laminated Glass Intermediate Film The laminated glass intermediate film 11 according to the present embodiment is constituted by the laminated glass intermediate film resin composition (P) according to the present embodiment.
The thickness of the laminated glass intermediate film 11 according to the present embodiment is, for example, 0.1 mm or more and 10 mm or less, preferably 0.2 mm or more and 5 mm or less, more preferably 0.3 mm or more and 2 mm or less.
The mechanical strength of the glass intermediate film 11 can be made more favorable as the thickness of the glass intermediate film 11 is more than the said lower limit. Moreover, the optical characteristic and interlayer adhesiveness of the laminated glass obtained can be made more favorable as the thickness of the glass intermediate film 11 is below the said upper limit.

The manufacturing method of the laminated glass intermediate film 11 which concerns on this embodiment is not specifically limited, A conventionally well-known manufacturing method can be used.
Examples of the method for producing the laminated glass interlayer film 11 according to the present embodiment include a press molding method, an extrusion molding method, a T-die molding method, an injection molding method, a compression molding method, a cast molding method, a calendar molding method, and an inflation molding method. Etc. can be used.
The solar cell encapsulant preferably has the same film thickness as the laminated glass intermediate film, and can be produced by the same production method.

3. Laminated Glass FIG. 1 is a cross-sectional view schematically showing an example of the structure of a laminated glass 10 according to an embodiment of the present invention.
A laminated glass 10 according to the present embodiment includes a laminated glass intermediate film 11 according to the present embodiment, and a transparent plate-like member 13 provided on both surfaces of the laminated glass intermediate film 11. The laminated glass 10 according to the present embodiment includes the laminated glass intermediate film 11 according to the present embodiment, and thus has an excellent optical property and water resistance performance balance. Further, the interlayer adhesion between the glass intermediate film 11 and the transparent plate member 13 is also excellent.
Two or more layers of laminated glass intermediate film 11 may be used, or a layer made of another resin may be sandwiched between two laminated glass intermediate films 11 to form three or more layers.

The transparent plate-like member 13 is not particularly limited. For example, a commonly used transparent plate glass can be used. For example, a float plate glass, a polished plate glass, a mold plate glass, a mesh plate glass, a lined plate glass, and a colored plate glass. Inorganic glass such as heat ray absorbing plate glass, heat ray reflecting plate glass, and green glass. Also, organic plastics plates such as polycarbonate plates, poly (meth) acrylate plates, polymethyl (meth) acrylate plates, polystyrene plates, cyclic polyolefin plates, polyethylene terephthalate plates, polyethylene naphthalate plates, polyethylene butyrate plates may be used. it can.
Further, the transparent plate-like member 13 may be appropriately subjected to surface treatment such as corona treatment, plasma treatment, and flame treatment.

The thickness of the transparent plate member 13 is, for example, 1 mm or more and 20 mm or less. In the laminated glass 10 according to the present embodiment, the transparent plate-like members 13 provided on both surfaces of the laminated glass intermediate film 11 may be the same or may be used in combination with different plate-like members.

The manufacturing method of the laminated glass 10 which concerns on this embodiment is not specifically limited, A conventionally well-known manufacturing method can be used.
As a method for manufacturing the laminated glass 10 according to the present embodiment, for example, as shown in FIG. 1, after sandwiching the laminated glass interlayer 11 according to the present embodiment between two transparent plate-like members 13, A method of heating and pressurizing is used.

These laminated glasses can be used for various applications, such as laminated glass for buildings, laminated glass for automobiles, general buildings, agricultural buildings, railway windows, etc. It is not limited to.

4). Solar cell module The solar cell module according to this embodiment includes at least a substrate on which sunlight is incident, a solar cell element, and a solar cell sealing material according to this embodiment. The solar cell module according to the present embodiment may further include a protective material as necessary. A substrate on which sunlight is incident may be simply referred to as a substrate.
The solar cell module according to the present embodiment can be produced by fixing the solar cell element sealed with the solar cell sealing material according to the present embodiment on the substrate.

Examples of such solar cell modules include various types. For example, a substrate / sealing material / solar cell element / sealing material / protective material sandwiched between both sides of a solar cell element; a solar cell previously formed on the surface of a substrate such as glass The element is configured as a substrate / solar cell element / sealing material / protective material; a solar cell element formed on the inner peripheral surface of the substrate, for example, sputtering an amorphous solar cell element on a fluororesin-based sheet, etc. And the like having a structure in which a sealing material and a protective material are formed on the material produced by the above method.
In addition, since the said protective material is provided in the opposite side to the board | substrate side of a solar cell module, ie, the lower part, when the board | substrate into which sunlight injects is made into the upper part of a solar cell module, it may be called a lower protective material.

Examples of solar cell elements include silicon-based materials such as single crystal silicon, polycrystalline silicon, and amorphous silicon, III-V groups such as gallium-arsenic, copper-indium-selenium, copper-indium-gallium-selenium, cadmium-tellurium, and II. Various solar cell elements such as a group VI compound semiconductor can be used. The solar cell sealing material according to the present embodiment is particularly useful for sealing an amorphous silicon solar cell element and a heterojunction type solar cell element of amorphous silicon and single crystal silicon.

Examples of the substrate constituting the solar cell module according to this embodiment include glass, acrylic resin, polycarbonate, polyester, fluorine-containing resin, and the like.
The protective material (lower protective material) is a single or multilayer sheet such as metal or various thermoplastic resin films, for example, metals such as tin, aluminum and stainless steel, inorganic materials such as glass, polyester, inorganic vapor deposited polyester, etc. And a single-layer or multilayer sheet of fluorine-containing resin, polyolefin and the like. The solar cell sealing material according to the present embodiment exhibits good adhesion to these substrates or protective materials.

When using the solar cell encapsulant according to the present embodiment and laminating and bonding together with the solar cell element, the substrate, and the protective material as described above, the conventional length of the ethylene / vinyl acetate copolymer system is used. Even without being subjected to a cross-linking step by pressure and heating over time, it is possible to impart adhesive strength that can withstand practical use and long-term stability of adhesive strength. However, from the viewpoint of imparting stronger adhesive strength and adhesive strength stability, it is recommended to perform pressurizing and heating treatment for a short time.

As described above, the embodiments of the present invention have been described with reference to the drawings. However, these are exemplifications of the present invention, and various configurations other than the above can be adopted.

Hereinafter, the present invention will be specifically described based on examples, but the present invention is not limited to these examples.

(1) Evaluation method [optical characteristics]
The film | membrane comprised with the resin composition for laminated glass intermediate films obtained by the Example and the comparative example was cut | judged to the size of 120 mm x 75 mm x 0.4 mm. Next, the obtained film was sandwiched between 120 mm × 75 mm × 3.2 mm glass plates (manufactured by Asahi Glass Co., Ltd., product name: float plate glass), held at 140 ° C. for 5 minutes in a vacuum laminator, 0.1 MPa (gauge pressure) Was pressed for 3 minutes to obtain a laminated glass. In addition, the obtained laminated glass was cooled by slow cooling so that it might return to room temperature over about 30 minutes. Subsequently, the haze of the obtained laminated glass was measured with a haze meter (manufactured by Murakami Color Co., Ltd., product name: haze meter HM150) according to JIS K7136. Subsequently, the optical characteristics of the resin compositions for laminated glass interlayer films obtained in Examples and Comparative Examples were evaluated according to the following criteria.
A (excellent): haze is 0.6% or less B (good): haze is over 0.6% and less than 1.0% C (poor): haze is 1.0% or more

[water resistant]
The film | membrane comprised with the resin composition for laminated glass intermediate films obtained by the Example and the comparative example was cut | judged to the size of 120 mm x 75 mm x 0.4 mm. Next, the obtained film was sandwiched between 120 mm × 75 mm × 3.2 mm glass plates (manufactured by Asahi Glass Co., Ltd., product name: float plate glass), held at 140 ° C. for 5 minutes in a vacuum laminator, 0.1 MPa (gauge pressure) Was pressed for 3 minutes to obtain a laminated glass. Next, the obtained laminated glass was immersed in warm water at 90 ° C. for 2 hours. Next, the length of the cloudy portion in the direction perpendicular to the end face of the laminated glass was measured at the cloudy portion generated at the edge of the laminated glass. Subsequently, the water resistance of the resin compositions for laminated glass interlayer films obtained in Examples and Comparative Examples was evaluated according to the following criteria.
A (excellent): the length of the cloudy part is 1 mm or less B (good): the length of the cloudy part is over 1 mm and 5 mm or less C (poor): the length of the cloudy part is over 5 mm

[Interlayer adhesion]
The film | membrane comprised with the resin composition for laminated glass intermediate films obtained by the Example and the comparative example was cut | judged to the size of 120 mm x 75 mm x 0.4 mm. Subsequently, the obtained film was laminated on a non-tin surface of a 120 mm × 75 mm × 3.9 mm glass plate (product name: blue plate glass, manufactured by Asahi Glass Co., Ltd.), and kept at 140 ° C. for 3 minutes in a vacuum with a vacuum laminator. The film was pressed at 1 MPa (gauge pressure) for 30 minutes to adhere the film to the non-tin surface of the glass plate. Next, the film was pulled away from the glass plate at a tensile rate of 100 mm / min, and the maximum stress was calculated as the adhesive strength (N / 15 mm) to the glass plate. Subsequently, the interlayer adhesiveness in the laminated glass of the resin composition for laminated glass interlayer films obtained in Examples and Comparative Examples was evaluated according to the following criteria.
A (excellent): Adhesive strength to glass plate is 20 N / 15 mm or more B (good): Adhesive strength to glass plate is 10 N / 15 mm or more and less than 20 N / 15 mm C (Poor): Adhesion strength to glass plate is less than 10 N / 15 mm

(2) Material Details of the material used for producing the laminated glass are as follows.
<Ionomers of ethylene / unsaturated carboxylic acid copolymer>
IO-1: Ionomer of ethylene / methacrylic acid copolymer (ethylene content 81% by mass, methacrylic acid content: 19% by mass, metal ion: sodium ion, degree of neutralization: 45%)
IO-2: Ionomer of ethylene / methacrylic acid copolymer (ethylene content 81% by mass, methacrylic acid content: 19% by mass, metal ion: zinc ion, degree of neutralization: 47%)

<Silane coupling agent>
Si-C1: Silane coupling agent having an amino group (N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, KBM-602, manufactured by Shin-Etsu Chemical Co., Ltd.)
Si-C2: Silane coupling agent having an amino group (3-aminopropyltrimethoxysilane, KBM-903, manufactured by Shin-Etsu Chemical Co., Ltd.)
Si-C3: Silane coupling agent having an amino group (N- (2-aminomethyl) -8-aminooctyltrimethoxysilane, KBM-6803, manufactured by Shin-Etsu Chemical Co., Ltd.)
Si-C4: Silane coupling agent having a glycidyl group (3-glycidoxypropyltrimethoxysilane, KBM-403, manufactured by Shin-Etsu Chemical Co., Ltd.)

[Examples 1 to 7 and Comparative Examples 1 to 8]
In the blending ratios shown in Tables 1 and 2, the ionomer of the ethylene / unsaturated carboxylic acid copolymer and the silane coupling agent were melt-kneaded at 160 ° C. to obtain resin compositions for laminated glass interlayer films, respectively.
Next, a laminated glass interlayer film having a thickness of 0.4 mm was obtained by extruding the obtained resin composition for laminated glass interlayer film under conditions of an extruder die outlet resin temperature of 160 ° C. and a processing speed of 5 m / min. It was.
Said evaluation was performed about the obtained laminated glass intermediate film, respectively. The obtained results are shown in Tables 1 and 2, respectively.

The laminated glass interlayers of Examples 1 to 7 were excellent in the performance balance of optical properties, water resistance, interlayer adhesion and appearance. In contrast, the laminated glass interlayer films of Comparative Examples 1 to 8 were inferior in the performance balance of optical properties, water resistance, interlayer adhesion and appearance.
In addition, the laminated glass intermediate film of Comparative Example 8 was inferior in appearance due to the occurrence of bumps on the surface. That is, the resin composition for laminated glass interlayer film of Comparative Example 8 was inferior in workability (film forming property). Therefore, various evaluations are not performed on the resin composition for laminated glass interlayer film of Comparative Example 8.

This application claims priority based on Japanese Patent Application No. 2016-167808 filed on August 30, 2016, the entire disclosure of which is incorporated herein.

Claims (19)

A resin composition used for forming a laminated glass interlayer film,
An ionomer (A) of an ethylene / unsaturated carboxylic acid copolymer, and a silane coupling agent (B) having an amino group,
A resin composition for laminated glass interlayer films, wherein the metal ions constituting the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer include a monovalent metal ion and a polyvalent metal ion. In the resin composition for laminated glass interlayer films according to claim 1,
A resin composition for a laminated glass interlayer film, wherein a molar ratio of the polyvalent metal ion to the monovalent metal ion in the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer is 0.1 or more and 10 or less. In the resin composition for laminated glass interlayer films according to claim 1 or 2,
A resin composition for a laminated glass interlayer film, wherein the monovalent metal ions include one or more selected from lithium ions, potassium ions, sodium ions, silver ions, mercury ions, and copper ions. In the resin composition for laminated glass interlayer films according to any one of claims 1 to 3,
The polyvalent metal ions are calcium ions, magnesium ions, zinc ions, aluminum ions, barium ions, beryllium ions, strontium ions, copper ions, cadmium ions, mercury ions, tin ions, lead ions, iron ions, cobalt ions and nickel ions. The resin composition for laminated glass intermediate films containing 1 type, or 2 or more types selected from these. In the resin composition for laminated glass interlayer films according to any one of claims 1 to 4,
A resin composition for a laminated glass interlayer film, wherein the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer has a neutralization degree of 5% to 95%. In the resin composition for laminated glass interlayer films according to any one of claims 1 to 5,
The resin composition for laminated glass intermediate films whose haze measured by the following method is less than 1.0%.
(Method)
A film of 120 mm × 75 mm × 0.4 mm made of the resin composition for laminated glass interlayer film is obtained. Next, the obtained film was sandwiched between glass plates of 120 mm × 75 mm × 3.2 mm, held at 140 ° C. for 5 minutes with a vacuum laminator, pressed at 0.1 MPa (gauge pressure) for 3 minutes, and laminated glass was obtained. obtain. Next, the haze of the obtained laminated glass is measured with a haze meter according to JIS K7136. In the resin composition for laminated glass interlayer films according to any one of claims 1 to 6,
A resin composition for laminated glass interlayer films, wherein the length of the cloudy portion measured by the following method is 5 mm or less.
(Method)
A film of 120 mm × 75 mm × 0.4 mm made of the resin composition for laminated glass interlayer film is obtained. Next, the obtained film was sandwiched between glass plates of 120 mm × 75 mm × 3.2 mm, held at 140 ° C. for 5 minutes with a vacuum laminator, pressed at 0.1 MPa (gauge pressure) for 3 minutes, and laminated glass was obtained. obtain. Next, the obtained laminated glass is immersed in warm water at 90 ° C. for 2 hours. Subsequently, in the cloudy part produced in the end part of the laminated glass, the length of the cloudy part perpendicular to the end surface of the laminated glass is measured. In the resin composition for laminated glass interlayer films according to any one of claims 1 to 7,
The resin composition for laminated glass intermediate films whose adhesive strength with respect to the glass plate measured by the following method is 10 N / 15mm or more.
(Method)
A film of 120 mm × 75 mm × 0.4 mm made of the resin composition for laminated glass interlayer film is obtained. Next, the obtained film was laminated on the non-tin surface of a 120 mm × 75 mm × 3.9 mm glass plate, held at 140 ° C. for 3 minutes in a vacuum laminator, and pressed at 0.1 MPa (gauge pressure) for 30 minutes. And the film is adhered to the non-tin surface of the glass plate. Next, the film is pulled away from the glass plate at a tensile speed of 100 mm / min, and the maximum stress is calculated as the adhesive strength (N / 15 mm) to the glass plate. In the resin composition for laminated glass interlayer films according to any one of claims 1 to 8,
The ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer is composed of a monovalent metal ion ionomer (A1) of the ethylene / unsaturated carboxylic acid copolymer and an ethylene / unsaturated carboxylic acid copolymer. The resin composition for laminated glass intermediate films containing a polyvalent metal ion ionomer (A2). In the resin composition for laminated glass interlayer films according to any one of claims 1 to 9,
A resin composition for a laminated glass interlayer film, wherein the unsaturated carboxylic acid constituting the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer contains at least one selected from acrylic acid and methacrylic acid. In the resin composition for laminated glass interlayer films according to any one of claims 1 to 10,
Laminated glass whose content of the amino group-containing silane coupling agent (B) is 0.001% by mass or more and 5% by mass or less when the entire resin composition for laminated glass interlayer film is 100% by mass. A resin composition for an interlayer film. In the resin composition for laminated glass interlayer films according to any one of claims 1 to 11,
In the ionomer (A) of the ethylene / unsaturated carboxylic acid copolymer, when the total of the structural units constituting the ethylene / unsaturated carboxylic acid copolymer is 100% by mass, it is derived from the unsaturated carboxylic acid. A resin composition for a laminated glass interlayer film, wherein the structural unit to be peeled is 5 mass% or more and 35 mass% or less. A laminated glass interlayer film comprising the resin composition for a laminated glass interlayer film according to any one of claims 1 to 12. A laminated glass interlayer film according to claim 13,
Transparent plate-like members provided on both surfaces of the laminated glass interlayer film,
Laminated glass with. The laminated glass according to claim 14, wherein the haze measured by a haze meter according to JIS K7136 is less than 1.0%. The length of the cloudiness part measured by the following method is 5 mm or less, The laminated glass of Claim 14 or Claim 15.
(Method)
The laminated glass is immersed in warm water at 90 ° C. for 2 hours. Subsequently, in the cloudy part produced in the end part of the laminated glass, the length of the cloudy part perpendicular to the end surface of the laminated glass is measured. A resin composition used to form a solar cell encapsulant,
An ionomer (A) of an ethylene / unsaturated carboxylic acid copolymer, and a silane coupling agent (B) having an amino group,
The resin composition for solar cell sealing materials in which the metal ion which comprises the ionomer (A) of the said ethylene and unsaturated carboxylic acid type copolymer contains a monovalent metal ion and a polyvalent metal ion. The solar cell sealing material comprised with the resin composition for solar cell sealing materials of Claim 17. A solar cell module comprising the solar cell encapsulant according to claim 18 in its configuration.

Images