WO2022071065A1 - アイオノマー樹脂、樹脂シートおよび合わせガラス - Google Patents

アイオノマー樹脂、樹脂シートおよび合わせガラス Download PDF

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Publication number
WO2022071065A1
WO2022071065A1 PCT/JP2021/034820 JP2021034820W WO2022071065A1 WO 2022071065 A1 WO2022071065 A1 WO 2022071065A1 JP 2021034820 W JP2021034820 W JP 2021034820W WO 2022071065 A1 WO2022071065 A1 WO 2022071065A1
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WO
WIPO (PCT)
Prior art keywords
ionomer resin
meth
unit
acrylic acid
resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/034820
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
卓郎 新村
憲太 竹本
淳裕 中原
芳聡 淺沼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kuraray Co Ltd
Original Assignee
Kuraray Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to EP21875367.1A priority Critical patent/EP4223795A4/en
Priority to KR1020237010337A priority patent/KR20230075444A/ko
Priority to US18/028,781 priority patent/US20230331887A1/en
Priority to JP2022505432A priority patent/JP7186329B2/ja
Priority to CN202180066479.7A priority patent/CN116348430B/zh
Publication of WO2022071065A1 publication Critical patent/WO2022071065A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/12—Hydrolysis
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/02—Ethene
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    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2293—Oxides; Hydroxides of metals of nickel

Definitions

  • the present invention relates to an ionomer resin and a method for producing the same, a resin sheet having one or more layers containing the ionomer resin, a laminated glass interlayer made of the resin sheet, and a laminated glass having the laminated glass interlayer.
  • Ionomer which is a neutralized product of an ethylene / unsaturated carboxylic acid copolymer, is used as an interlayer film of laminated glass because of its excellent transparency and adhesiveness to glass (for example, Patent Document 1).
  • Patent Document 1 the required performance for laminated glass has increased, and even for ionomer resins, high transparency is maintained regardless of the manufacturing conditions of laminated glass, high elasticity is maintained even at high temperatures, and the strength of laminated glass is reduced. It has come to be required that the glass is not allowed to be colored, that the appearance is excellent, that the adhesiveness to the glass is excellent, and that the glass is not easily peeled off.
  • Patent Document 2 has at least one layer containing an ionomer or ionomer blend into which a partially neutralized ⁇ , ⁇ -ethylenically unsaturated carboxylic acid has been introduced, wherein the ionomer or ionomer blend is the ⁇ . , 1 or more monovalent metal ions in an amount in the range of about 1 to about 60% and an amount in the range of about 40 to about 99% based on the total amount of neutralization of ⁇ -ethylenically unsaturated carboxylic acid. Describes a polymer sheet containing ions of one or more polyvalent metals.
  • Patent Document 3 describes a resin composition containing an ionomer resin and an adhesion promoter, wherein the adhesion promoter is a dialkoxysilane compound.
  • the laminated glass When the laminated glass is used outdoors, it may peel off between the glass and the laminated glass interlayer film or whiten and the transparency may decrease due to moisture such as rain, especially at the edge of the laminated glass. there were. Therefore, there is a demand for an ionomer resin that can form a laminated glass interlayer film having high transparency and adhesiveness to glass even under high humidity conditions.
  • Patent Document 2 describes that the ionomers or ionomer blends described in the same document exhibit synergistically improved glass adhesive strength.
  • the ionomer described in Patent Document 2 tends to whiten and lose its transparency under high humidity conditions, and also tends to peel off from the glass, so that the glass is easily separated from the glass. It was found that the adhesiveness with and may not always be sufficient.
  • Patent Document 3 describes that the resin composition described in the same document exhibits high adhesiveness to glass even under high humidity conditions. However, according to the studies by the present inventors, the resin composition described in Patent Document 3 tends to form a crosslinked gel during molding, and further improvement is required to obtain a resin sheet having a good appearance. I understood.
  • an object of the present invention is an ionomer resin having high transparency and high adhesiveness to a substrate such as glass even under high humidity conditions and capable of forming a sheet having a good appearance, and an ionomer resin thereof.
  • the purpose is to provide a manufacturing method.
  • the present inventors have reached the present invention as a result of diligent studies to solve the above problems. That is, the present invention provides the following preferred embodiments.
  • (Meta) Acrylic acid unit (A), (Meta) Acrylic acid neutralized product unit (B) and ethylene unit (C) Is an ionomer resin, including The total content of the unit (A) and the unit (B) is 6 to 10 mol% based on all the monomer units constituting the ionomer resin. The content of the transition metal in the ionomer resin is 0.01 to 100 mg / kg. Ionomer resin.
  • the ionomer resin further contains a (meth) acrylic acid ester unit (D), and the total content of the unit (A), the unit (B) and the unit (D) constitutes the ionomer resin.
  • the saponification step and / or the demetallization step is performed using a reaction device, and at least a part of the reaction device is an alloy containing nickel and chromium as transition metals in a total amount of 50% by mass or more. 7] or the method according to [8].
  • At least a portion of the reaction apparatus is selected from the group consisting of a reaction vessel, a stirring blade, a baffle, and a feed line that supplies a strong base and / or a strong acid into the reaction vessel. The method according to [9].
  • the ionomer resin of the present invention contains (meth) acrylic acid unit (A), (meth) acrylic acid neutralized substance unit (B), and ethylene unit (C), and the content of the transition metal in the ionomer resin is 0. It is 0.01 to 100 mg / kg.
  • the ionomer resin of the present invention contains a transition metal, and the content thereof is 0.01 to 100 mg / kg.
  • the present inventors obtain the transparency of the ionomer resin, particularly the transparency under high humidity conditions (for example, whitening resistance under high humidity conditions).
  • the adhesiveness to the glass, especially under high humidity conditions was improved while maintaining the adhesiveness. Therefore, the ionomer resin of the present invention has high transparency and high adhesiveness to glass even under high humidity conditions.
  • the ionomer resins of the invention have high adhesion to glass (especially under high humidity conditions), surprisingly, crosslinked gels are less likely to form, resulting in It was also found that it is easy to obtain a resin sheet having a good appearance.
  • a resin having improved adhesiveness to glass by containing an adhesion promoter such as a silane coupling agent tends to form a crosslinked gel, and it tends to be difficult to obtain a resin sheet having a good appearance.
  • the ionomer resin has high adhesiveness to glass, and it is easy to obtain a resin sheet having a good appearance.
  • the thermal decomposition property of the ionomer resin can be improved by setting the content of the transition metal in the ionomer resin to 0.01 to 100 mg / kg.
  • the (meth) acrylic acid unit in the ionomer resin (meth) due to the interaction between the transition metal and the (meth) acrylic acid unit (A) in the ionomer resin ( It is considered that this is because it is easy to suppress the desorption of A) by heat.
  • the content of the transition metal in the ionomer resin is out of the above range, the transparency of the ionomer resin (particularly the transparency under high humidity conditions) and the adhesiveness with glass (particularly with glass under high humidity conditions) Adhesiveness) and the heat-decomposability of ionomer resins tend to decrease.
  • the content of the transition metal is less than 0.01 mg / kg, the adhesiveness with the glass tends to decrease under high humidity conditions, so that the adhesion with the glass tends to occur under high humidity conditions, for example, an ionomer resin.
  • the content of the transition metal is 0.01 mg / kg or more, preferably 0.05 mg / kg or more, and more, from the viewpoint of easily improving transparency, adhesion to glass under high humidity conditions, and heat-resistant decomposition resistance. It is preferably 0.1 mg / kg or more, more preferably 0.2 mg / kg or more. Further, from the viewpoint of easily improving the transparency and heat-decomposability and easily suppressing the coloring of the ionomer resin, 100 mg / kg or less, preferably 50 mg / kg or less, more preferably 20 mg / kg or less, more preferably 10 mg. It is / kg or less, more preferably 5 mg / kg or less.
  • the transition metal in the ionomer resin can be adjusted by the method for producing the ionomer resin.
  • the content of the transition metal in the ionomer resin can be measured using inductively coupled plasma (ICP) emission spectroscopic analysis, for example by the method described in Examples.
  • ICP inductively coupled plasma
  • the transition metal contained in the ionomer resin is not particularly limited, and is, for example, a first transition metal such as scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, and ittrium, zirconium, niobium, molybdenum, and the like. Second transition metals such as technetium, ruthenium, zirconium, palladium and silver can be mentioned. These transition metals may be used alone or in combination of two or more.
  • the transition metal is the first transition metal from the viewpoint of easily enhancing the transparency and heat-decomposability of the ionomer resin under high humidity conditions and the adhesiveness to glass under high humidity conditions. It is preferably one or more metals selected from the group consisting of iron, nickel, manganese and chromium, and more preferably one or more metals containing at least iron.
  • the state of the transition metal contained in the ionomer resin is not particularly limited.
  • the transition metal may be contained in the ionomer resin as, for example, a transition metal oxide, a transition metal hydroxide, a transition metal halide, a transition metal salt, or the like, and is a (meth) acrylic acid neutralizer unit in the ionomer resin. It may be contained as a metal ion in (B).
  • the ionomer resin of the present invention contains (meth) acrylic acid unit (A), (meth) acrylic acid neutralized product unit (B), and ethylene unit (C), and the unit (A) and the unit (B).
  • the total content of the above is 6 to 10 mol% based on all the monomer units constituting the ionomer resin.
  • the "unit” means a "constituent unit of origin", and for example, the (meth) acrylic acid unit indicates a structural unit derived from (meth) acrylic acid, and the (meth) acrylic acid.
  • the neutralized product unit indicates a constituent unit derived from a (meth) acrylic acid neutralized product, and the ethylene unit indicates a constituent unit derived from ethylene.
  • (meth) acrylic acid means methacrylic acid or acrylic acid.
  • the transparency and elastic modulus of the ionomer resin (for example, the elastic modulus at 50 ° C.) can be easily improved.
  • the total content exceeds the upper limit, it is difficult to develop a high elastic modulus (for example, elastic modulus at 50 ° C.) of the ionomer resin.
  • the total content is less than the above lower limit value, the ionomer resin tends to whiten if the crystallinity is too high. Therefore, for example, when the laminated glass is prepared, it is treated at a high temperature and then slowly cooled. , The transparency (transparency at the time of slow cooling) in a state where the ionomer resin is slowly cooled and the crystallization of the resin is promoted tends to decrease.
  • the total content is 6 mol% or more, preferably 6.5 mol% or more, more preferably from the viewpoint of easily improving the transparency of the ionomer resin (particularly the transparency at the time of slow cooling) and the adhesiveness with glass. It is 7.0 mol% or more, more preferably 7.5 mol% or more, and 10 mol% or less, preferably 9.9 mol%, from the viewpoint of easily improving the elasticity and molding processability of the ionomer resin. Below, it is more preferably 9.5 mol% or less.
  • the total content of the unit (A) and the unit (B) can be adjusted by the method for producing the ionomer resin. More specifically, when an ionomer resin is produced from an ethylene- (meth) acrylic acid ester copolymer as a raw material by a method including a saponification reaction step and a demetallization reaction step of the copolymer, ethylene- The (meth) acrylic acid ester unit in the (meth) acrylic acid ester copolymer is converted into the (meth) acrylic acid unit (A) and the (meth) acrylic acid neutralized product unit by the saponification reaction and the demetallization reaction. It can be adjusted by the degree of reaction (conversion ratio) of each reaction to be converted to B). Further, as described in US Pat. No.
  • Examples of the monomer constituting the (meth) acrylic acid unit (A) include acrylic acid and methacrylic acid, and methacrylic acid is preferable from the viewpoint of heat resistance and adhesiveness to a substrate such as glass. .. These (meth) acrylic acid units may be used alone or in combination of two or more.
  • the content of the (meth) acrylic acid unit (A) in the ionomer resin is such that the total content of the unit (A) and the unit (B) is 6 to 6 based on all the monomer units constituting the ionomer resin. It is not particularly limited as long as it is within the range of 10 mol%. In one embodiment of the present invention, the content of the (meth) acrylic acid unit (A) in the ionomer resin is preferably 4.5 mol% or more, based on all the monomer units constituting the ionomer resin.
  • It is preferably 5.0 mol% or more, more preferably 5.5 mol% or more, particularly preferably 5.8 mol% or more, and preferably 9.0 mol% or less, more preferably 8.5 mol% or more. Below, it is more preferably 8.0 mol% or less, and particularly preferably 7.5 mol% or less.
  • the content of the unit (A) is at least the above lower limit value, the transparency of the ionomer resin and the adhesiveness to a substrate such as glass are likely to be improved. Further, when it is not more than the above upper limit value, it is easy to improve the molding processability.
  • the (meth) acrylic acid neutralized product is a product in which the hydrogen ion of (meth) acrylic acid is replaced with a metal ion.
  • the neutralized product unit of the (meth) acrylic acid unit (A) is preferable.
  • the metal ions include alkali metal ions such as lithium, sodium and potassium; alkaline earth metal ions such as magnesium and calcium; non-transition metal ions of groups 12 to 13 such as zinc and aluminum; and transition metal ions and the like. Can be mentioned.
  • the transition metal ion include a transition metal ion that can be contained in the above-mentioned ionomer resin. Such metal ions may be used alone or in combination of two or more.
  • the content of the (meth) acrylic acid neutralized substance unit (B) in the ionomer resin is such that the total content of the unit (A) and the unit (B) is the total monomer unit constituting the ionomer resin.
  • the standard is not particularly limited as long as it is within the range of 6 to 10 mol%.
  • the content of the (meth) acrylic acid neutralizer unit (B) is preferably 0.65 mol% or more, more preferably 0.65 mol% or more, based on all the monomer units constituting the ionomer resin.
  • Each content of the unit (A) and the unit (B) is made from an ethylene- (meth) acrylic acid ester copolymer as a raw material, and is an ionomer by a method including a saponification reaction step and a demetallization reaction step of the copolymer.
  • the (meth) acrylic acid ester unit in the ethylene- (meth) acrylic acid ester copolymer is subjected to the saponification reaction and the demetallization reaction to obtain the (meth) acrylic acid unit (A) and (meth). It can be adjusted by the degree of reaction in each reaction to be converted into the acrylic acid neutralizing substance unit (B).
  • the content of the ethylene unit (C) is preferably 80 mol% or more, more preferably 85 mol% or more, based on all the monomer units constituting the ionomer resin, from the viewpoint of easily increasing the impact resistance of the ionomer resin. It is more preferably 88 mol% or more, and is preferably 94 mol% or less, more preferably 91 mol% or less, from the viewpoint of easily increasing the transparency of the ionomer resin (particularly, the transparency at the time of slow cooling).
  • ethylene unit (C) When the content of ethylene unit (C) is at least the above lower limit value, mechanical strength and molding processability are likely to be improved, and when it is at least the above upper limit value, ionomer resin is difficult to crystallize and transparency ( In particular, it is easy to improve transparency during slow cooling).
  • the ionomer resin of the present invention can easily obtain higher transparency. Further, it is preferable to include the (meth) acrylic acid ester unit (D).
  • the ionomer resin contains a (meth) acrylic acid ester unit (D)
  • the total content of the unit (A), the unit (B) and the unit (D) is transparent (particularly transparency at the time of slow cooling).
  • the ionomer resin of the present invention comprises (meth) acrylic acid unit (A), (meth) acrylic acid neutralized substance unit (B), ethylene unit (C), and (meth).
  • Acrylic acid ester unit (D) is included, and the total content of the unit (A), the unit (B) and the unit (D) is 6 to 6 based on all the monomer units constituting the ionomer resin. It is 10 mol%.
  • the ionomer resin contains a (meth) acrylic acid ester unit (D)
  • the total content of the unit (A), the unit (B) and the unit (D) is not more than the above upper limit value
  • the ionomer resin When a high elastic modulus is easily developed and the total content is at least the lower limit value, the transparency of the ionomer resin, particularly the transparency at the time of slow cooling, is easily enhanced.
  • the ionomer resin contains a (meth) acrylic acid ester unit (D)
  • the total content of the unit (A), the unit (B) and the unit (D) is transparent (particularly during slow cooling).
  • a substrate such as glass
  • 6 mol% or more preferably 6.5 mol% or more, more preferably 7.0 mol% or more, still more preferably 7.5 mol. % Or more
  • it is 10 mol% or less, preferably 9.9 mol% or less, and more preferably 9.5 mol% or less.
  • the total content of the unit (A), the unit (B) and the unit (D) can be adjusted by the raw material of the ionomer resin. More specifically, when an ionomer resin is produced from an ethylene- (meth) acrylic acid ester copolymer as a raw material by a method including a saponomerization reaction step and a demetallization reaction step of the copolymer, the ionomer resin is used. It can be adjusted by the amount of (meth) acrylic acid ester modification of the ethylene- (meth) acrylic acid ester copolymer which is the raw material of. Further, as described in US Pat. No.
  • Examples of the monomers constituting the (meth) acrylic acid ester unit (D) are methyl (meth) acrylic acid, ethyl (meth) acrylic acid, n-propyl (meth) acrylic acid, and isopropyl (meth) acrylic acid.
  • preferable monomers from the viewpoint of transparency or heat resistance are methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, and ( N-butyl (meth) acrylate, isobutyl (meth) acrylate, sec-butyl (meth) acrylate, t-butyl (meth) acrylate, and more preferred monomers are methyl (meth) acrylate, (.
  • Ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, and more preferred monomers are (meth).
  • Methyl acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, and a particularly preferred monomer is methyl (meth) acrylate.
  • These (meth) acrylic acid esters may be used alone or in combination of two or more.
  • the content of the (meth) acrylic acid ester unit (D) in the ionomer resin is not particularly limited.
  • the content of the (meth) acrylic acid ester unit (D) in the ionomer resin is more preferably 0.01 mol% or more based on all the monomer units constituting the ionomer resin. More preferably 0.05 mol% or more, particularly preferably 0.08 mol% or more, and preferably 1.0 mol% or less, more preferably 0.7 mol% or less, still more preferably 0.5. It is less than mol%.
  • the content of the unit (D) is at least the above lower limit value and at least the above upper limit value, the transparency of the ionomer resin is likely to be improved.
  • the content of the unit (D) is a step of saponifying reaction of the copolymer using an ethylene- (meth) acrylic acid ester copolymer as a raw material.
  • the ionomer resin is produced by a method including a demetallization reaction step, the (meth) acrylic acid ester unit (D) in the ethylene- (meth) acrylic acid ester copolymer is replaced with the (meth) acrylic acid unit (A). It can be adjusted by the degree of reaction of the saponification reaction to be converted into.
  • the ionomer resin of the present invention comprises a (meth) acrylic acid unit (A), a (meth) acrylic acid neutralizer unit (B), and an ethylene unit (C), and optionally a (meth) acrylic acid ester unit (meth). It may contain other monomer units other than D). Examples of other monomer units include a carboxylic acid unit (A1) other than the (meth) acrylic acid unit (A) and a carboxylic acid neutralizer unit (B) other than the (meth) acrylic acid neutralizer unit (B). B1) and the like can be mentioned.
  • Examples of the monomer constituting the carboxylic acid unit (A1) include itaconic acid, maleic anhydride, monomethyl maleate, monoethyl maleate and the like, and monomethyl maleate and monoethyl maleate are preferable.
  • Examples of the monomer constituting the carboxylic acid neutralized product unit (B1) include the neutralized product unit of the carboxylic acid unit (A1).
  • the carboxylic acid neutralized product is obtained by replacing the hydrogen ion of the carboxylic acid with a metal ion.
  • Examples of the metal ion include the same as the metal ion in the above-mentioned (meth) acrylic acid neutralizing substance unit (B), and the metal ion may be one kind alone or a combination of two or more kinds. These other monomer units may be used alone or in combination of two or more.
  • the total content thereof for example, the total contents of (A1) and (B1) may be appropriately selected within a range that does not impair the effects of the present invention, for example.
  • the monomer units constituting the ionomer resin it is preferably 5 mol% or less, more preferably 3 mol% or less, still more preferably 1 mol% or less, and preferably 0.01 mol% or more. More preferably, it is 0.1 mol% or more.
  • NMR nuclear magnetic resonance spectroscopy
  • the degree of branching per 1000 carbon atoms of the ionomer resin of the present invention is not particularly limited, and is preferably 5 to 30, more preferably 6 to 20.
  • the degree of branching is, for example, when the ionomer resin is produced from an ethylene- (meth) acrylic acid ester copolymer as a raw material by a method including a saponification reaction step and a demetallization reaction step of the copolymer. Can be adjusted by the polymerization temperature when synthesizing ethylene- (meth) acrylic acid ester as a raw material.
  • the degree of branching per 1000 carbons can be measured by the wideband dipole decoupling / magic angle spinning (DD / MAS) method using solid state NMR.
  • the melting point of the ionomer resin of the present invention is preferably 50 ° C. or higher, more preferably 60 ° C. or higher, still more preferably 80 ° C. or higher, and more preferably 80 ° C. or higher, from the viewpoint of heat resistance and heat-decomposability.
  • the temperature is preferably 200 ° C. or lower, more preferably 180 ° C. or lower, still more preferably 150 ° C. or lower.
  • the melting point can be measured based on JIS K7121: 2012.
  • DSC differential scanning calorimeter
  • the heat of fusion of the ionomer resin of the present invention is preferably 0 J / g or more and 25 J / g or less.
  • the heat of fusion can be measured based on JIS K7122: 2012. Specifically, it is measured using a differential scanning calorimeter (DSC) under the conditions of a cooling rate of -10 ° C / min and a temperature rise rate of 10 ° C / min, and is calculated from the area of the melting peak at the time of the second temperature rise. can do.
  • DSC differential scanning calorimeter
  • the melt flow rate (MFR) of the ionomer resin of the present invention measured under the conditions of 190 ° C. and 2.16 kg according to JIS K7210 is preferably 0.1 g / 10 minutes or more. It is more preferably 0.3 g / 10 minutes or more, further preferably 0.7 g / 10 minutes or more, still more preferably 1.0 g / 10 minutes or more, particularly preferably 1.5 g / 10 minutes or more, and preferably 50 g. It is / 10 minutes or less, more preferably 30 g / 10 minutes or less, and particularly preferably 10 g / 10 minutes or less.
  • the MFR of the ionomer resin is not less than the above lower limit value and not more than the upper limit value, it is easy to perform a molding process suppressing deterioration due to heat, and it is easy to obtain a resin sheet having excellent penetration resistance.
  • the melting point, heat of fusion and MFR of the ionomer resin are the molecular weight of the ionomer resin, and the (meth) acrylic acid unit (A), the (meth) acrylic acid neutralized product unit (B), and the ethylene unit (C) of the ionomer resin. It can also be adjusted by the content of the (meth) acrylic acid ester unit (D) contained in the case.
  • the storage elastic modulus (E') at 50 ° C. measured by the dynamic viscoelasticity measurement of the ionomer resin of the present invention is good independence (that is, high elastic modulus), particularly high temperature. From the viewpoint of independence in an environment (high elastic modulus in a high temperature environment), it is preferably 20 MPa or more, more preferably 30 MPa or more, still more preferably 40 MPa or more, and particularly preferably 50 MPa or more.
  • the upper limit of the storage elastic modulus (E') is not particularly limited and may be 1000 MPa.
  • the storage modulus includes the molecular weight of the ionomer resin, as well as the (meth) acrylic acid unit (A), the (meth) acrylic acid neutralizer unit (B), and the ethylene unit (C), and optionally (meth). It can be adjusted by the content of the acrylic acid ester unit (D).
  • the storage elastic modulus (E') of the ionomer resin at 50 ° C. can be measured by dynamic viscoelasticity measurement.
  • the ionomer resin of the present invention contains a transition metal of 0.01 to 100 mg / kg as described above, it has high heat-decomposability.
  • the 1% weight loss temperature (Td1) of the ionomer resin of the present invention at a temperature rise of 10 ° C./min is preferably 330 ° C. or higher, more preferably 350 ° C. or higher. It is more preferably 360 ° C. or higher, particularly preferably 370 ° C. or higher, and usually 450 ° C. or lower.
  • the 1% weight loss temperature of the ionomer resin When the 1% weight loss temperature of the ionomer resin is equal to or higher than the above lower limit, it is easy to reduce foaming and / or thermal decomposition during melt molding of the ionomer resin, and black foreign matter and the like generated by thermal decomposition of bubbles and / or the resin are easily present. It is easy to obtain an interlayer film that has no defects.
  • the 1% weight loss temperature represents the temperature at which the weight loss rate becomes 1% with respect to the weight at 200 ° C.
  • the 1% weight loss temperature can be measured according to JIS K7120-1987, and can be measured, for example, by the method described in Examples.
  • the ionomer resin of the present invention has high transparency, and in a preferred embodiment of the present invention, the haze of the ionomer resin of the present invention at a sheet thickness of 0.8 mm is preferably 2.0% or less, more preferably. Is 1.5% or less, more preferably 1.0% or less.
  • the haze of the ionomer resin is measured using a haze meter in accordance with JIS K7136: 2000.
  • the ionomer resin of the present invention Since the ionomer resin of the present invention has a transition metal content of 0.01 to 100 mg / kg, it has high transparency even under high humidity conditions.
  • the transparency of the ionomer resin under high humidity conditions can be evaluated by the haze (water absorption haze) in which the ionomer resin absorbs water.
  • the haze (water absorption haze) at a sheet thickness of 0.8 mm in a state where the ionomer resin of the present invention has absorbed water is preferably 9.0% or less, more preferably 5.0% or less. More preferably, it is 3.0% or less. The smaller the water absorption haze, the higher the transparency of the ionomer resin in the water-absorbed state.
  • the lower limit is not particularly limited and may be, for example, 0.01%.
  • the water absorption haze was held for 300 hours in a state where the ionomer resin was immersed in ion-exchanged water at 23 ° C., removed from the ion-exchanged water, and the ionomer resin from which the water adhering to the surface was wiped off was used as a test piece and a haze meter was used.
  • JIS K7136 2000, and can be measured, for example, by the method described in Examples.
  • the haze (slow cooling haze) in a state where the crystallization of the ionomer resin of the present invention is promoted by slow cooling is preferably 5.0% or less, more preferably 4. It is 5% or less, more preferably 4.0% or less, still more preferably 3.0% or less, and particularly preferably 2.5% or less. The smaller the haze, the higher the transparency of the ionomer resin.
  • the lower limit is not particularly limited and may be, for example, 0.01%.
  • an ionomer resin having a sheet thickness of 0.8 mm is placed between two glass plates to prepare a laminated glass, and the laminated glass is heated to 140 ° C. and then 140 ° C. to 0.1 ° C./min. It is obtained by measuring the haze after slowly cooling to 23 ° C. with a haze meter in accordance with JIS K7136: 2000.
  • the yellowness (YI) of the ionomer resin of the present invention at a sheet thickness of 0.8 mm is preferably 3.0 or less, more preferably 2.0 or less, still more preferably 1.5 or less, from the viewpoint of less likely to cause coloring. Particularly preferably, it is 1.0 or less.
  • the yellowness (YI) can be measured in accordance with JIS Z8722 using a colorimeter, for example, by the method described in Examples.
  • the adhesiveness of the ionomer resin of the present invention to glass can be evaluated by the peeling energy between the glass and the ionomer resin measured by the peeling test.
  • the peeling energy between the glass and the ionomer resin measured under standard conditions is preferably 2 kJ / m 2 or more, more preferably 2.5 kJ / m 2 or more, still more preferably 3 kJ / m. 2 or more, particularly preferably 3.5 kJ / m 2 or more.
  • the adhesiveness to the glass under high humidity conditions can be evaluated by the peeling energy between the glass and the ionomer resin measured by the peeling test under Wet conditions.
  • the peeling energy between the glass and the ionomer resin measured under Wet conditions is preferably 0.05 kJ / m 2 or more, more preferably 0.1 kJ / m 2 or more, still more preferably 0.15 kJ / m 2 or more, particularly. It is preferably 0.2 kJ / m 2 or more.
  • the upper limit of the peeling energy under standard conditions and high humidity conditions is not particularly limited and may be 10 kJ / m 2 or less.
  • the peeling test can be performed, for example, by the method described as Peel Adhesion Measurement described in International Publication No. 2019/027865.
  • the peeling energy measured under the standard conditions and the Wet conditions can be measured by, for example, the method described in Examples.
  • the ionomer resin of the present invention is made from, for example, an ethylene- (meth) acrylic acid ester copolymer (X) as a raw material.
  • Including It can be produced by a method in which the saponification step and / or the demetallization step is performed in the presence of a transition metal (hereinafter, also referred to as a production method (I)).
  • all or part of the (meth) acrylic acid ester unit in the ethylene- (meth) acrylic acid ester copolymer (X) is contained in the (meth) acrylic acid unit and the (meth) acrylic acid.
  • (meth) acrylic acid unit (A), (meth) acrylic acid neutralized product unit (B), ethylene unit (C) and optionally (meth) acrylic acid ester unit (D) Ionomer resin containing is obtained.
  • all or part of the (meth) acrylic acid ester unit in the ethylene- (meth) acrylic acid ester copolymer is used as the (meth) acrylic acid unit by the saponification step and the demetallization step. And, it may be a method of converting to a (meth) acrylic acid neutralized product unit (hereinafter, also referred to as method (1)), and after the saponification step and the demetallization step, the demetallized product further obtained is middle. All or part of the (meth) acrylic acid ester units in the ethylene- (meth) acrylic acid ester copolymer may be neutralized with (meth) acrylic acid units and (meth) acrylic acid by a method comprising a neutralization step of harmonization. It may be a method of converting into physical units (hereinafter, also referred to as method (2)).
  • the ethylene- (meth) acrylic acid ester copolymer is saponified with a strong base, so that all or part of the (meth) acrylic acid ester unit is (meth) acrylic. Converted to acid-neutralized unit to obtain a saponified ethylene- (meth) acrylic acid ester- (meth) acrylic acid neutralized product copolymer or ethylene- (meth) acrylic acid neutralized product copolymer. Then, a part of the (meth) acrylic acid neutralized substance unit in the obtained saponified product is demetallized with a strong acid and converted into a (meth) acrylic acid unit, whereby the (meth) acrylic acid unit (A). ), (Meta) acrylic acid neutralized product unit (B), ethylene unit (C) and optionally (meth) acrylic acid ester unit (D) to obtain an ionomer resin.
  • the method (2) specifically, in the (meth) acrylic acid in the saponified product obtained by saponifying the ethylene- (meth) acrylic acid ester copolymer with a strong base in the method (1). All Japanese units are demetallized with a strong acid and converted to (meth) acrylic acid units to obtain an ethylene- (meth) acrylic acid copolymer, and then the (meth) in the obtained demetallized product.
  • an ionomer resin containing an ethylene unit (C) and optionally a (meth) acrylic acid ester unit (D) is obtained.
  • the ionomer resin by the method (1) from the viewpoint of reducing the number of reactions and easily improving the production efficiency of the ionomer resin.
  • the saponification step and / or the demetallization step is carried out as a transition metal.
  • an ionomer resin containing a transition metal can be obtained.
  • performing the saponification step and / or the demetallization step in the presence of a transition metal means that the saponification reaction and / or the demetallization reaction in the demetallization step is transitioned into the reaction system. It means to do it in the presence of metal.
  • the transition metal present in the reaction system may be one kind alone or a combination of two or more kinds.
  • the method for allowing the transition metal to exist in the reaction system of the saponification reaction and / or the demetallization reaction is not particularly limited, and for example, a method using a reaction device containing the transition metal, a member containing the transition metal in the reaction system, and the like are put into the reaction system.
  • Any method may be used, such as a method, a powder of a transition metal oxide, a hydroxide, a halide, a salt or the like, and / or a method of adding the powder in a state of being dispersed or dissolved in a solvent into the reaction system. ..
  • the transition metal present in the reaction system is corroded by the strong base used in the saponification reaction and / or the strong acid used in the demetallization reaction, so that the ionomer resin contains the transition metal.
  • the transition metal existing in the reaction system is corroded
  • the transition metal ion ionized by the corrosion and eluted in the reaction system is the metal ion in the (meth) acrylic acid neutralizer unit (B), or
  • the hydrogen ion of (meth) acrylic acid in the (meth) acrylic acid unit (A) a transition metal is contained in the ionomer resin as a metal ion in the (meth) acrylic acid neutralizer unit (B).
  • the transition metal ion eluted in the reaction system can be contained in the ionomer resin as an oxide and / or a halide by reacting with an oxygen ion and / or a halogen ion that may exist in the reaction system.
  • transition metal present in the reaction system examples include the above-mentioned transition metals that can be contained in the ionomer resin.
  • the transition metal present in the reaction system may be, for example, a pure metal composed of a single metal element or an alloy containing at least one transition metal.
  • the state of the transition metal is not particularly limited, and may be, for example, a state of a metal ion, an oxide, a hydroxide, a halide, a metal salt, or the like.
  • the transition metal present in the reaction system is preferably an alloy containing at least one transition metal from the viewpoint of easily enhancing the adhesion to glass under high humidity conditions.
  • the alloy containing at least one of the transition metals has enhanced alkali corrosion resistance to strong bases used in the saponification step and acid corrosion resistance to strong acids used in the demetallization step, and is contained in the ionomer resin.
  • Hastelloy-based stainless steels such as SUS304, SUS316, SUS316L, SUS312L, SUS310S, SUS836L, and SUS890L; Hastelloy B2, Hastelloy B3, Hastelloy B4, Hastelloy C4, Hastelloy.
  • It is preferably a nickel-based alloy such as C2000, Hastelloy C22, Hastelloy C276, Inconel X750, Inconel 625, Inconel 600, Inconel 601, Inconel 625, Inconel 718, Inconel 825.
  • a nickel-based alloy such as C2000, Hastelloy C22, Hastelloy C276, Inconel X750, Inconel 625, Inconel 600, Inconel 601, Inconel 625, Inconel 718, Inconel 825.
  • the alloy enhances the alkali corrosion resistance to the strong base used in the saponification step and the acid corrosion resistance to the strong acid used in the demetallization step, and the content of the transition metal in the ionomer resin is 100 ppm.
  • an alloy containing 50% by mass or more of nickel and chromium in total is preferable.
  • the total content of nickel and chromium may be more preferably 60% by mass or more, still more preferably 70% by mass or more. Further, the total content of nickel and chromium may be preferably 98% by mass or less, more preferably 95% by mass or less, still more preferably 90% by mass or less, from the viewpoint of the durability of the alloy.
  • the saponification step and / or the demetallization step is performed in the reaction device, and at least a part of the reaction device contains at least one transition metal.
  • the saponification step and / or the demetallization step is transitioned by performing the saponification step and / or the demetallization step in the reaction apparatus in which at least a part of the reaction device contains at least one transition metal. It can be done in the presence of metal.
  • At least a part of the reaction apparatus containing at least one transition metal is preferably an alloy containing at least one transition metal, and the alloy containing at least one transition metal is described above, including preferred embodiments. Alloys can be mentioned. Among them, the alloy enhances the alkali corrosion resistance to the strong base used in the saponification step and the acid corrosion resistance to the strong acid used in the demetallization step, and the content of the transition metal in the ionomer resin can be easily adjusted to 100 ppm or less. From the viewpoint, an alloy containing 50% by mass or more of nickel and chromium in total is preferable.
  • At least a part of the reaction apparatus is particularly limited as long as it is a portion in the reaction apparatus where the strong base used in the saponification reaction and / or the strong acid used in the demetallization reaction can come into contact with each other and the corrosion of the transition metal can proceed. However, it may be a portion that can come into contact with a liquid containing, for example, a strong base and / or a strong acid, or a portion that can come into contact with a gas containing a strong base and / or a strong acid.
  • At least a portion of the reactor may be part of a component that may constitute the reactor, eg, a reaction vessel, a stirring blade, a baffle, and a strong base and /.
  • a feed line or the like that supplies a strong acid into the reaction vessel can be mentioned. These may be used alone or in combination of two or more.
  • the feed line that supplies a strong base and / or a strong acid into the reaction vessel includes pipes, addition nozzles, valves, and the like that can form the feed line.
  • At least a part of the reaction apparatus is preferably at least a part of a reaction vessel (for example, a bottom portion, a side portion, etc. of the reaction vessel), and more preferably the entire reaction vessel. preferable.
  • both the saponification step and the demetallization step are transitioned. It may be performed in the presence of a metal or only one of them may be performed in the presence of a transition metal.
  • Examples of the monomers constituting the (meth) acrylic acid ester unit of the ethylene- (meth) acrylic acid ester copolymer (X) include methyl (meth) acrylic acid, ethyl (meth) acrylic acid, and (meth).
  • N-propyl acrylate isopropyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, sec-butyl (meth) acrylate, t-butyl (meth) acrylate, (meth) ) Amil acrylate, (meth) isoamyl acrylate, (meth) n-hexyl acrylate, (meth) cyclohexyl acrylate, (meth) 2-ethylhexyl acrylate, (meth) pentadecyl acrylate, (meth) dodecyl acrylate , (Meta) isobornyl acrylate, (meth) phenyl acrylate, (meth) benzyl acrylate, (meth) phenoxyethyl acrylate, (meth) 2-hydroxyethyl acrylate, (meth) 2-methoxyethyl
  • preferred monomers are methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, (. Isobutyl (meth) acrylate, sec-butyl (meth) acrylate, t-butyl (meth) acrylate, more preferred monomers are methyl (meth) acrylate, ethyl (meth) acrylate, n (meth) acrylate.
  • ethylene- (meth) acrylic acid ester copolymer (X) examples include ethylene-methyl acrylate copolymer, ethylene-methyl methacrylate copolymer, ethylene-ethyl acrylate copolymer, and ethylene-methacryl.
  • Ethyl acid acid copolymer ethylene-n-propyl methacrylate copolymer, ethylene-n-propyl methacrylate copolymer, ethylene-isopropyl methacrylate copolymer, ethylene-isopropyl methacrylate copolymer, ethylene-acrylic acid
  • examples thereof include an n-butyl copolymer, an ethylene-n-butyl methacrylate copolymer, a sec-butyl copolymer of ethylene-acrylate, a sec-butyl copolymer of ethylene-methacrylate, and the like.
  • copolymers As these copolymers, commercially available products may be used, or those synthesized by the high-temperature high-pressure radical polymerization method described in US2013 / 0274424, JP-A-2006-23359 or JP-A-2007-84743 may be used.
  • Examples of the commercially available product include "Aklift” (registered trademark) WK307 manufactured by Sumitomo Chemical Co., Ltd., "Lexpearl” (registered trademark) A4250 manufactured by Japan Polyethylene Corporation, and the like.
  • the content of the (meth) acrylic acid ester unit in the ethylene- (meth) acrylic acid ester copolymer (X) is preferably 6 mol% or more, more preferably 6.5 mol% or more, still more preferably 7 mol. % Or more, particularly preferably 7.5 mol% or more, preferably 10 mol% or less, more preferably 9.9 mol% or less, still more preferably 9.5 mol% or less.
  • the content of the (meth) acrylic acid ester unit in the copolymer (X) is the (meth) acrylic acid unit (A) and the (meth) acrylic acid neutralized product unit (B) in the obtained ionomer resin.
  • the content of the (meth) acrylic acid ester unit in the copolymer (X) is equal to or higher than the above lower limit in order to correspond to the total content of the (meth) acrylic acid ester unit (D) when contained. It is easy to increase the transparency of the obtained ionomer resin, particularly the transparency at the time of slow cooling, and when the content is not more than the above upper limit value, it is easy to increase the elastic ratio of the obtained ionomer resin.
  • the content of the (meth) acrylic acid ester unit in the copolymer (X) can be adjusted by the copolymerization ratio of ethylene and the (meth) acrylic acid ester.
  • the content thereof includes the (meth) acrylic acid unit (A), the (meth) acrylic acid neutralized product unit (B), and the ethylene unit (C) in the above-mentioned ionomer resin, and when it is contained (meth).
  • the melt flow rate (MFR) of the ethylene- (meth) acrylic acid ester copolymer (X) measured at 190 ° C. and 2.16 kg according to JIS K7210 is preferable. Is 5 g / 10 minutes or more, more preferably 10 g / 10 minutes or more, further preferably 50 g / 10 minutes or more, still more preferably 100 g / 10 minutes or more, preferably 400 g / 10 minutes or less, and more preferably 350 g / It is 10 minutes or less, more preferably 300 g / 10 minutes or less, and even more preferably 250 g / 10 minutes or less.
  • the MFR of the ethylene- (meth) acrylic acid ester copolymer (X) is at least the above lower limit value and at least the above upper limit value, the moldability and strength of the obtained ionomer resin can be easily improved.
  • the MFR of the ethylene- (meth) acrylic acid ester copolymer (X) can be adjusted by the degree of polymerization and the content of the (meth) acrylic acid ester unit.
  • the MFR can be measured, for example, by the method described in Examples.
  • the weight average molecular weight of the ethylene- (meth) acrylic acid ester copolymer (X) is preferably 15,000 g / mol or more, more preferably 20 from the viewpoint of easily improving the molding processability and strength of the obtained ionomer resin. It is 000 g / mol or more, more preferably 30,000 g / mol or more, preferably 200,000 g / mol or less, and more preferably 100,000 g / mol or less. From the same viewpoint, the number average molecular weight of the ethylene- (meth) acrylic acid ester copolymer (X) is preferably 5,000 g / mol or more, more preferably 10,000 g / mol or more, still more preferably 15.
  • the weight average molecular weight and the number average molecular weight can be adjusted by the amount of the polymerization initiator and / or the chain transfer agent at the time of polymerization.
  • the molecular weights (weight average molecular weight and number average molecular weight) of these ethylene- (meth) acrylic acid ester copolymers (X) are column (three series of TSKgel GMH HR -H (20) HT) and 1,2,2, It can be measured in terms of polystyrene using a 4-trichlorobenzene solvent at a column temperature of 140 ° C.
  • the degree of branching of the ethylene- (meth) acrylic acid ester copolymer (X) per 1000 carbons is not particularly limited, and is preferably 5 to 30, more preferably 6 to 20.
  • the degree of branching can be adjusted by the polymerization temperature at the time of polymerizing the copolymer (X).
  • the degree of branching can be measured by dissolving an ethylene- (meth) acrylic acid ester copolymer in deuterated orthodichlorobenzene and using an inverse gate decoupling method of 13 C-NMR.
  • Examples of the strong base used for the saponification reaction in the saponification step include sodium hydroxide, potassium hydroxide, calcium hydroxide and the like, and water is preferable from the viewpoint of solubility in the solvent used for the saponification reaction and economic efficiency.
  • Sodium oxide and potassium hydroxide are preferable from the viewpoint of solubility in the solvent used for the saponification reaction and economic efficiency.
  • the amount of the strong base added is, for example, preferably 100 to 300 mol parts, more preferably 120 parts, based on 100 mol parts of the (meth) acrylic acid ester unit of the ethylene- (meth) acrylic acid ester copolymer (X). It is ⁇ 250 mol parts, more preferably 150-200 mol parts.
  • the method of adding the strong base is not particularly limited. For example, even if the strong base is added to the liquid containing the ethylene- (meth) acrylic acid ester copolymer (X) via the gas phase portion in the reaction vessel, the strong base can be added to the reaction vessel. It may be added directly to the liquid without passing through the gas phase portion.
  • Examples of the solvent used for the saponification reaction include ethers such as tetrahydrofuran and dioxane; halogen-containing solvents such as chloroform and dichlorobenzene; ketones having 6 or more carbon atoms such as methylbutylketone; hydrocarbon compounds and methanol, ethanol, etc.
  • Examples include mixed solvents with alcohols such as 1-propanol, 2-propanol and 1-butanol; aromatic compounds such as benzene, toluene, xylene and ethylbenzene; mixed solvents of aromatic compounds and alcohols. These solvents may be used alone or in combination of two or more.
  • a preferable solvent is a mixed solvent of a hydrocarbon compound and alcohols, a mixed solvent of an aromatic compound and alcohols, and a more preferable solvent is toluene or the like. It is a mixed solvent of an aromatic compound and an alcohol such as methanol.
  • the ratio of the hydrocarbon compound or aromatic compound to the alcohol in the mixed solvent may be appropriately selected according to the type of each solvent used, and for example, the mass ratio of the hydrocarbon compound or the aromatic compound to the alcohol (carbonation).
  • the hydrocarbon compound or aromatic compound / alcohols) may be 50/50 to 90/10.
  • the temperature at which the saponification reaction is carried out is preferably 50 ° C. or higher, more preferably 60 ° C. or higher, and further, from the viewpoint of its reactivity and the solubility of the ethylene- (meth) acrylic acid ester copolymer (X). It is preferably 70 ° C. or higher, more preferably 80 ° C. or higher, and particularly preferably 100 ° C. or higher.
  • the upper limit of the temperature is preferably 180 ° C. or lower, more preferably 180 ° C. or lower, from the viewpoint that it is easy to suppress the excessive progress of corrosion of the transition metal due to the saponification reaction and the content of the transition metal in the ionomer resin can be easily adjusted to 100 mg / kg or less. Is 150 ° C. or lower, more preferably 140 ° C. or lower, still more preferably 130 ° C. or lower, and particularly preferably 120 ° C. or lower.
  • the saponification reaction may be carried out in air or in an inert gas such as nitrogen gas or argon gas. Further, the saponification reaction may be carried out under normal pressure, pressure, or reduced pressure, and is preferably carried out under pressure.
  • Examples of the strong acid used for the demetallization reaction in the demetallization step include hydrochloric acid, nitric acid, sulfuric acid, toluenesulfonic acid and the like. From the viewpoint of easy washing and removal of salts by-produced from the strong base used in the saponification reaction and the strong acid used in the demetallization reaction, inorganic acids such as hydrochloric acid, nitric acid and sulfuric acid are preferable.
  • the solvent used for the demetallization the same solvent as the solvent used for the saponification reaction can be selected.
  • the amount of the strong acid added can be selected according to the amount of the strong base added in order to adjust the (meth) acrylic acid neutralized substance unit (B) to an arbitrary value.
  • the method of adding the strong acid may be, for example, a method of adding the strong acid to the solution of the saponified product via the gas phase portion in the reaction vessel, and the saponified product does not pass through the gas phase portion in the reaction vessel.
  • a method of adding a strong acid directly to the solution in the solution may be used.
  • the strong acid is added from the center of the reaction tank from the viewpoint of making it difficult for the added strong acid to come into contact with the wall surface of the gas phase part of the reaction tank.
  • the shortest distance to the wall surface of the reaction tank is defined as the distance L
  • the strong acid is preferably added within 2 m from the liquid surface from the viewpoint of making it difficult for the strong acid to be added to come into contact with the wall surface of the vapor phase portion of the reaction tank. It is preferable to carry out from a position within 1 m.
  • the feed port of the addition nozzle is located within 20% of the distance L from the center of the reaction vessel and within 2 m or 1 m from the liquid surface.
  • a strong acid may be added to the solution of the saponified product via the gas phase portion in the reaction vessel.
  • a strong acid may be added to the solution of the saponified product via the gas phase portion in the reaction vessel.
  • the feed port of the addition nozzle that adds the strong acid to the saponified solution is the liquid level of the saponified solution.
  • the content of the transition metal in the ionomer resin can be easily adjusted to 100 mg / kg or less, demetallization is performed, and a strong acid is added to the solution of the saponified material to the gas phase portion in the reaction vessel. It is preferable to carry out by adding in the liquid without going through.
  • the stirring method is not particularly limited, but the stirring method is a method of stirring by an industrially general-purpose stirring blade having an arbitrary shape such as a max blend blade, a three-piece swept wing, a paddle blade, a multi-stage paddle blade, a turbine blade, and an anchor blade. good.
  • the stirring blades it is preferable to stir with the Max Blend blade from the viewpoint that the added strong acid can be easily mixed uniformly.
  • the temperature at the time of demetallization is preferably 20 ° C. or higher, more preferably 30 ° C. or higher, still more preferably 40 ° C. or higher, and transition due to the demetallization reaction, from the viewpoint of easily lowering the viscosity of the reaction solution. From the viewpoint of easily suppressing the excessive progress of metal corrosion and easily adjusting the content of the transition metal in the ionomer resin to 100 mg / kg or less, it is preferably 180 ° C. or lower, more preferably 150 ° C. or lower, still more preferably 120 ° C. It is as follows.
  • the demetallization may be carried out in air or in an inert gas such as nitrogen gas or argon gas, as in the saponification reaction. Further, the saponification reaction may be carried out under normal pressure, pressure, or reduced pressure, and is preferably carried out under pressure.
  • the neutralizing agent used for neutralizing a part of the (meth) acrylic acid unit and converting it into the (meth) acrylic acid neutralizing substance unit contains a metal ion. It is not particularly limited as long as it is an ionic compound.
  • the metal ions include alkali metal ions such as lithium, potassium and sodium, alkaline earth metal ions such as magnesium and calcium, transition metal ions such as zinc, nickel, iron and titanium, and aluminum ions.
  • the neutralizing agent include sodium hydroxide, sodium acetate, sodium hydrogencarbonate and the like.
  • a polymer such as an ionomer resin containing a (meth) sodium acrylate unit can also be used as a neutralizing agent.
  • the separation and purification step for separation and purification may be carried out by a conventional method, for example, separation means such as filtration, washing, concentration, reprecipitation, recrystallization and silica gel column chromatography.
  • a poor solvent is added to a solution of a crude ionomer resin to precipitate a granular resin, and then the precipitated granular resin is produced from the viewpoint of easy washing and removal of by-produced salts. It is preferable to carry out by washing with a washing liquid.
  • the crude ionomer resin solution can be prepared by dissolving the crude ionomer resin obtained after the neutralization step after the demetallization step or the demetallization step in a solvent, and after the demetallization step or the demetallization step.
  • the reaction solution obtained after the neutralization step may be used as a solution of a crude ionomer resin.
  • the solvent in the solution of the crude ionomer resin is not particularly limited as long as it is a solvent capable of dissolving the crude ionomer resin, and examples thereof include the same solvent as the solvent used for the saponification reaction.
  • a mixed solvent of an aromatic compound such as toluene and an alcohol such as methanol is preferable from the viewpoint of the solubility of the crude ionomer resin.
  • the ratio of the aromatic compound to the alcohols in the mixed solvent may be appropriately selected according to the type of each solvent used. For example, the mass ratio of the aromatic compound to the alcohols (aromatic compound / alcohols) may be selected. , 50/50 to 90/10, preferably 65/35 to 85/15.
  • the concentration of the solution of the crude ionomer resin it is easy to obtain a granular resin having a small particle size, and as a result, when an excess transition metal is present in the crude ionomer resin, the excess transition metal can be removed and by-product.
  • it is preferably 30% by mass or less, more preferably 15% by mass or less, and preferably 1% by mass or more, more preferably 5% by mass or more.
  • the temperature of the solution of the crude ionomer resin should be lower than the melting point of the ionomer resin from the viewpoint that it is easy to suppress the aggregation or sticking of the precipitated granular resin and it is easy to remove the excess transition metal and the by-produced salt in the ionomer resin. Is preferable, more preferably 60 ° C. or lower, still more preferably 50 ° C. or lower. Further, from the viewpoint of the fluidity of the solution of the crude ionomer resin, the temperature is more preferably 25 ° C. or higher, still more preferably 30 ° C. or higher.
  • the poor solvent to be added to the crude ionomer resin solution is not particularly limited as long as it is a solvent that is mixed with the crude ionomer resin solution and does not dissolve the ionomer resin.
  • methanol, ethanol, 1-propanol, 2-propanol, etc. Alcohols such as 1-butanol; water; ketones such as acetone and methyl ethyl ketone; esters such as methyl acetate and ethyl acetate; ethers such as dimethyl ether, diethyl ether and tetrahydrofuran; hydrocarbons such as n-hexane, cyclohexane and heptane. Examples include compounds.
  • the poor solvent is preferably methanol, 2-propanol or the like from the viewpoint of easy drying of the ionomer resin due to its low boiling point and easy removal of excess transition metal and by-produced salt in the granular resin.
  • the amount of the poor solvent added may be appropriately selected according to the concentration of the crude ionomer resin solution.
  • the amount of the poor solvent added is preferably 30 parts by mass or more, more preferably 60 parts by mass or more, and particularly preferably 100 parts by mass or more with respect to 100 parts by mass of the solution of the crude ionomer resin.
  • the upper limit of the amount of the poor solvent added is not particularly limited, and the upper limit of the amount of the poor solvent added is usually 1000 parts by mass or less with respect to 100 parts by mass of the solution of the crude ionomer resin.
  • the method of adding the poor solvent to the solution of the crude ionomer resin is not particularly limited.
  • the poor solvent may be added to the solution of the crude ionomer resin at one time, or may be added in a plurality of times by dropping or the like. good.
  • the particle size of the granular resin tends to be smaller, which tends to improve the removability of excess transition metals and by-produced salts in the granular resin, and as a result, the transparency of the ionomer resin tends to be improved.
  • the poor solvent is added in a plurality of times, it is preferable to complete the addition of the poor solvent within 1 hour, more preferably within 30 minutes, and even more preferably within 10 minutes.
  • the stirring speed is not particularly limited, but the faster the stirring speed, the easier it is to obtain granular particles having a small particle size.
  • the stirring time is not particularly limited, and for example, the mixture may be stirred until granular particles are precipitated and the mixture of the crude ionomer resin solution and the poor solvent becomes a slurry, and specifically, preferably for 1 second or longer. It is 3 hours or less, more preferably 10 seconds or more and 1 hour or less, and further preferably 1 minute or more and 30 minutes or less.
  • the peak top particle size of the granular resin deposited by adding a poor solvent to the solution of the crude ionomer resin is determined from the viewpoint that it is easy to remove the by-produced salt in the granular resin by increasing the specific surface area of the granular resin. From the viewpoint of facilitating the reduction of the content of the excess transition metal and, as a result, the content of the transition metal in the ionomer resin can be easily adjusted within the range of 0.01 to 100 mg / kg, 700 ⁇ m or less, preferably 650 ⁇ m. Below, it is more preferably 600 ⁇ m or less, still more preferably 550 ⁇ m or less. Further, from the viewpoint of easily improving the filterability of the granular resin and easily improving the production efficiency of the ionomer resin, it is preferably 50 ⁇ m or more, more preferably 70 ⁇ m or more, and preferably 80 ⁇ m or more.
  • the peak top particle size of the granular resin to be precipitated by adding a poor solvent to the crude ionomer resin solution can be adjusted by adjusting the concentration and temperature of the crude ionomer resin solution. Specifically, when the concentration and / or temperature of the crude ionomer resin solution is lowered, the peak top particle size of the precipitated granular resin can be reduced, and when the concentration and / or temperature of the crude ionomer resin solution is increased, precipitation occurs. The peak top particle size of the granular resin can be increased.
  • the peak top particle size of the granular resin can also be adjusted by the method of adding the poor solvent and the stirring speed of the mixed solution of the crude ionomer resin solution and the poor solvent.
  • the cleaning liquid for cleaning the precipitated granular resin is not particularly limited as long as it is a solvent in which the ionomer resin does not dissolve.
  • Examples of preferable cleaning solutions include alcohols such as methanol, ethanol, 1-propanol and 2-isopropanol; water; ketones such as acetone and methyl ethyl ketone; esters such as methyl acetate and ethyl acetate; dimethyl ether, diethyl ether, tetrahydrofuran and the like. Ethers are mentioned. These may be used alone or in combination of two or more.
  • cleaning liquids alcohols, water, and a mixed liquid thereof are preferable from the viewpoint of easily removing excess transition metals and by-produced salts. Furthermore, by making the specific gravity of the cleaning liquid smaller than that of the granular resin, the contact area between the cleaning liquid and the granular resin can be increased, so that the removability of transition metals and by-produced salts can be easily improved, and the organic contained in the granular resin can be easily improved. From the viewpoint of facilitating the removal of impurities such as compounds and the ease of drying the ionomer resin obtained after cleaning, a more preferable cleaning liquid is a mixed liquid of water and alcohols.
  • Preferred alcohols are methanol, ethanol, and more preferably methanol because they are easy to dry and have high compatibility with water.
  • the ratio of water to alcohols (water / alcohols (mass%)) in the mixed solution of water and alcohols is preferably 20/80 to 80/20, more preferably 30/70 to 70/30. ..
  • the method of cleaning the granular resin with a cleaning liquid there is a method of filtering out the granular resin from the granular resin dispersion liquid in which the granular resin is precipitated, mixing the collected granular resin with the cleaning liquid, and then removing the liquid. .. More specifically, after mixing the granular resin collected by filtration from the granular resin dispersion and the cleaning liquid, the granular resin is collected by filtration from the cleaning liquid (hereinafter, also referred to as cleaning step (a)), and then the collected granules.
  • a method of cleaning by mixing the resin with a new cleaning liquid and then filtering out the granular resin from the cleaning liquid (hereinafter, also referred to as a cleaning step (b)) can be mentioned.
  • the cleaning of the granular resin is performed from the viewpoint of easy removal of the transition metal and by-produced salts contained in the granular resin and the production efficiency of the ionomer resin.
  • the cleaning step (b) is preferably performed 1 to 10 times, and the number of cleaning steps (b) after one cleaning step (a) is more preferably 1 to 6 times, still more preferably 1 to 4 times. Is.
  • the amount of the cleaning liquid used per cleaning step may be appropriately selected according to the amount of the granular resin to be washed.
  • the amount of the cleaning liquid used per cleaning step is preferably 100 parts by mass to 2000 times, more preferably 200 parts by mass to 1000 parts by mass, more preferably 100 parts by mass with respect to 100 parts by mass of the granular resin at the time of drying. Is 300 parts by mass to 700 parts by mass.
  • the ionomer resin obtained by washing the granular resin with a cleaning liquid may be dried if necessary.
  • the drying temperature may be preferably equal to or lower than the melting point of the ionomer resin, more preferably 80 ° C. or lower.
  • the ionomer resin of the present invention can be produced by a method other than the production method (I).
  • a method other than the above-mentioned production method (I) capable of producing the ionomer resin of the present invention for example, ethylene and (meth) acrylic acid are used as raw materials, and a copolymer obtained by polymerizing them is partially neutralized. Later, a method of adding a transition metal to the obtained partially neutralized product (hereinafter, also referred to as a production method (II)) can be mentioned.
  • a step of partially neutralizing the obtained ethylene- (meth) acrylic acid copolymer with a strong base (partial neutralization step), and a step of adding a transition metal to the obtained partially neutralized product (addition step).
  • An ionomer resin containing 0.01 to 100 mg / kg of a transition metal can be produced by a method containing the above.
  • the ionomer having a transition metal content of 0.01 to 100 mg / kg in the resin is obtained.
  • the transition metal that can be added to the partially neutralized product include transition metals that can be contained in the ionomer resin of the present invention.
  • the state of the transition metal when added to the resin is not particularly limited, and may be, for example, a transition metal oxide, a transition metal hydroxide, a transition metal halide, a transition metal salt, or the like, and these may be dispersed or dispersed in a solvent. It may be added in a dissolved state.
  • the amount of the transition metal added may be appropriately selected so that the content of the transition metal in the ionomer resin is in the range of 0.01 to 100 mg / kg.
  • the amount of the transition metal added may be appropriately selected so that the content of the transition metal in the ionomer resin is in the range of 0.01 to 100 mg / kg.
  • It may be 0.01 ⁇ 10 -4 to 100 ⁇ 10 -4 parts by mass, preferably 0.05 ⁇ 10 -4 to 50 ⁇ 10 -4 parts by mass, based on 100 parts by mass of the obtained resin. It may be preferably 0.1 ⁇ 10 -4 to 10 ⁇ 10 -4 parts by mass, and more preferably 0.2 ⁇ 10 -4 to 5 ⁇ 10 -4 parts by mass.
  • the partially neutralized product and the transition metal may be mixed using a mixing stirrer, an extruder or the like.
  • the ionomer resin of the present invention is a method of adding a transition metal to a crude ionomer resin obtained by performing a saponification step and a demetallization step in the absence of a transition metal in the above-mentioned production method (I) (hereinafter referred to as a method). , Also referred to as manufacturing method (III)). Further, the ionomer resin of the present invention is a method of adding a transition metal during the production of the partially neutralized product in the production method (II), for example, between the copolymerization step and the partial neutralization step (hereinafter referred to as a method). It can also be manufactured by a manufacturing method (IV)). As the transition metal added in the production method (III) and the production method (IV), the same one as in the production method (II) can be used.
  • an additive may be added to the ionomer resin of the present invention, if necessary, to obtain a resin composition.
  • the resin composition comprises the ionomer resin of the present invention and an additive.
  • additives examples include ultraviolet absorbers, antioxidants, antioxidants, heat deterioration inhibitors, light stabilizers, anti-sticking agents, lubricants, mold release agents, and polymer processing aids. , Antistatic agents, flame retardants, dyes and pigments, organic dyes, matting agents, phosphors and the like. Among these additives, ultraviolet absorbers, antioxidants, antioxidants, heat deterioration inhibitors, light stabilizers, anti-sticking agents, lubricants, mold release agents, polymer processing aids, and organic dyes are preferable. When added, the additive may be used alone or in combination of two or more.
  • the resin composition may contain an adhesion promoter such as a silane coupling agent as an additive, but from the viewpoint of suppressing the formation of crosslinked gels and easily obtaining a resin sheet having a good appearance, adhesion is performed. It is preferable that it does not contain an accelerator.
  • the ultraviolet absorber is a compound having the ability to absorb ultraviolet rays, and is said to have the function of mainly converting light energy into heat energy.
  • Examples of the ultraviolet absorber include benzophenones, benzotriazoles, triazines, benzoates, salicylates, cyanoacrylates, oxalic acid anilides, malonic acid esters, formamidines and the like. These may be one kind alone or a combination of two or more kinds.
  • Benzotriazoles are preferable as UV absorbers because they have a high effect of suppressing deterioration of optical properties such as coloring due to UV exposure.
  • Examples of preferred benzotriazoles include 2- (2H-benzotriazole-2-yl) -4- (1,1,3,3-tetramethylbutyl) phenol (manufactured by BASF; trade name TINUVIN329), 2-.
  • (2H-benzotriazole-2-yl) -4,6-bis (1-methyl-1-phenylethyl) phenol (manufactured by BASF; trade name: TINUVIN234), 2,2'-methylenebis [6- (2H-benzo Triazole-2-yl) -4-t-octylphenol] (manufactured by ADEKA Co., Ltd .; LA-31), 2- (5-octylthio-2H-benzotriazole-2-yl) -6-tert-butyl-4- Examples include methylphenol. These may be one kind alone or a combination of two or more kinds.
  • triazine UV absorbers examples include 2,4,6-tris (2-hydroxy-4-hexyloxy-3-methylphenyl) -1,3,5-triazine (manufactured by ADEKA Co., Ltd .; LA-). F70) and its analogs, hydroxyphenyltriazine-based ultraviolet absorbers (manufactured by BASF; TINUVIN477 and TINUVIN460), 2,4-diphenyl-6- (2-hydroxy-4-hexyloxyphenyl) -1,3. 5-Triazine and the like can be mentioned. These may be one kind alone or a combination of two or more kinds.
  • anti-aging agent examples include known materials. Specific examples of anti-aging agents include hydroquinone, hydroquinone monomethyl ether, 2,5-di-t-butylphenol, 2,6-di (t-butyl) -4-methylphenol, mono (or di, or tri).
  • Phenolic compounds such as phenol; 2,2'-methylenebis (4-ethyl-6-t-butylphenol), 4,4'-butylidenebis (3-methyl-6-t-butylphenol), Bisphenol compounds such as 4,4'-thiobis (3-methyl-6-t-butylphenol); benzimidazole compounds such as 2-mercaptobenzimidazole and 2-mercaptomethylbenzimidazole; 6-ethoxy-1,2- Amine-ketone compounds such as dihydro-2,2,4-trimethylquinoline, reaction products of diphenylamine and acetone, 2,2,4-trimethyl-1,2-dihydroquinoline polymers; N-phenyl-1-naphthylamine, Fragrances such as alkylated diphenylamines, octylated diphenylamines, 4,4'-bis ( ⁇ , ⁇ -dimethylbenzyl) diphenylamines, p- (
  • the antioxidant is effective in preventing oxidative deterioration of the resin by itself in the presence of oxygen.
  • phosphorus-based antioxidants hindered phenol-based antioxidants, thioether-based antioxidants, and the like can be mentioned. These antioxidants may be used alone or in combination of two or more. Among them, phosphorus-based antioxidants and hindered phenol-based antioxidants are preferable, and a combination of phosphorus-based antioxidants and hindered phenol-based antioxidants is more preferable, from the viewpoint of the effect of preventing deterioration of optical properties due to coloring. ..
  • the amount of the phosphorus-based antioxidant used is preferably 1: 5 to 2 in terms of mass ratio. 1, more preferably 1: 2 to 1: 1.
  • Examples of preferable phosphorus-based antioxidants include 2,2-methylenebis (4,6-di-t-butylphenyl) octylphosphite (manufactured by ADEKA Corporation; trade name: ADEKA STAB HP-10), Tris (2). , 4-di-t-butylphenyl) phosphite (manufactured by BASF; trade name: IRGAFOS168), 3,9-bis (2,6-di-t-butyl-4-methylphenoxy) -2,4,8 , 10-Tetraoxa 3,9-diphosphaspiro [5.5] Undecane (manufactured by ADEKA Corporation; trade name: ADEKA STUB PEP-36) and the like. These may be one kind alone or a combination of two or more kinds.
  • antioxidants examples include pentaerythrityl-tetrakis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate] (BASF; trade name IRGANOX1010), octadecyl. -3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate (manufactured by BASF; trade name IRGANOX1076) and the like can be mentioned. These may be one kind alone or a combination of two or more kinds.
  • the heat deterioration inhibitor can prevent the heat deterioration of the resin by capturing the polymer radicals generated when exposed to high heat under a substantially oxygen-free state.
  • a preferable heat deterioration inhibitor 2-t-butyl-6- (3'-t-butyl-5'-methyl-hydroxybenzyl) -4-methylphenylacrylate (manufactured by Sumitomo Chemical Co., Ltd .; trade name) Sumilyzer GM), 2,4-di-t-amyl-6- (3', 5'-di-t-amyl-2'-hydroxy- ⁇ -methylbenzyl) phenylacrylate (manufactured by Sumitomo Chemical Co., Ltd .; product The name simulator GS) and the like can be mentioned. These may be one kind alone or a combination of two or more kinds.
  • the light stabilizer is a compound that is said to have a function of capturing radicals mainly generated by oxidation by light.
  • preferred light stabilizers include hindered amines such as compounds having a 2,2,6,6-tetraalkylpiperidine skeleton. These may be one kind alone or a combination of two or more kinds.
  • anti-sticking agents examples include fatty acid salts or esters, polyhydric alcohol esters, inorganic salts, inorganic oxides, and particulate resins.
  • preferable anti-sticking agents include calcium stearate, calcium carbonate, calcium sulfate, magnesium sulfate, barium sulfate, silicon dioxide (manufactured by Evonik; trade name Aerosil), particulate acrylic resin and the like. These may be one kind alone or a combination of two or more kinds.
  • lubricants include stearic acid, behenic acid, stearomic acid, methylene bisstearoamide, hydroxystearic acid triglyceride, paraffin wax, ketone wax, octyl alcohol, hydrogenated oil and the like. These may be one kind alone or a combination of two or more kinds.
  • the release agent examples include higher alcohols such as cetyl alcohol and stearyl alcohol; and glycerin higher fatty acid esters such as stearic acid monoglyceride and stearic acid diglyceride. These may be one kind alone or a combination of two or more kinds.
  • polymer particles having a particle diameter of 0.05 to 0.5 ⁇ m which can be produced by an emulsion polymerization method, are usually used.
  • the polymer particles may be single-layer particles made of polymers having a single composition ratio and a single extreme viscosity, or may be multilayer particles made of two or more kinds of polymers having different composition ratios or extreme viscosities. good. These may be one kind alone or a combination of two or more kinds.
  • particles having a two-layer structure having a polymer layer having a low ultimate viscosity in the inner layer and a polymer layer having a high ultimate viscosity of 5 dl / g or more in the outer layer are preferable.
  • the ultimate viscosity of the polymer processing aid is preferably 3 to 6 dl / g. If the ultimate viscosity is too small, the effect of improving the moldability tends to be low, and if the ultimate viscosity is too large, the moldability of the copolymer tends to be deteriorated.
  • the organic dye a compound having a function of converting ultraviolet rays into visible light is preferably used.
  • the organic dye may be used alone or in combination of two or more.
  • fluorescent materials include fluorescent pigments, fluorescent dyes, fluorescent white dyes, fluorescent whitening agents, fluorescent bleaching agents, and the like. These may be one kind alone or a combination of two or more kinds.
  • the contents of various additives can be appropriately selected as long as the effects of the present invention are not impaired, and the total content of various additives is preferable with respect to the total mass of the resin composition. Is 7% by mass or less, more preferably 5% by mass or less, still more preferably 4% by mass or less.
  • additives may be added at the time of producing the ionomer resin, may be added after the production of the ionomer resin, or may be added at the time of producing the resin sheet described later.
  • the ionomer resin of the present invention and the resin composition of the present invention may be in the form of pellets or the like in order to enhance convenience during storage, transportation, or molding.
  • the ionomer resin and the resin composition are pelletized, they can be obtained, for example, by cutting the strands obtained by the melt extrusion method.
  • the temperature of the resin or the resin composition at the time of melt extrusion in the case of pelleting by the melt extrusion method is preferably 150 ° C. or higher, more preferably 170 ° C. or higher from the viewpoint of easily stabilizing the discharge from the extruder. Further, the temperature is preferably 250 ° C. or lower, more preferably 230 ° C.
  • the ionomer resin of the present invention and the resin composition of the present invention have high heat-resistant decomposition resistance, problems such as thermal decomposition of the ionomer resin to generate black foreign matter are unlikely to occur when pelletizing by the melt extrusion method. ..
  • the present invention also includes a resin sheet having one or more layers containing the ionomer resin of the present invention.
  • the resin sheet of the present invention has one or more layers containing the ionomer resin of the present invention (hereinafter, also referred to as layer (x)).
  • the layer (x) is a layer containing the ionomer resin of the present invention or the resin composition of the present invention.
  • the resin sheet of the present invention may be composed of only the layer (x), or may be a laminated body containing at least one layer (x).
  • the laminate is not particularly limited, and examples thereof include a laminate containing two or more layers (x) and a laminate including one or more layers (x) and one or more other layers. Be done.
  • the resin or the resin composition constituting each layer may be the same or different.
  • Examples of the other layer include a layer containing a known resin.
  • the resin include polyethylene terephthalate, polybutylene terephthalate, cyclic polyolefin, and polyphenylene sulfide among polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyurethane, polytetrafluoroethylene, acrylic resin, polyamide, polyacetal, polycarbonate, and polyester.
  • Polytetrafluoroethylene, polysulfone, polyether sulfone, polyarylate, liquid crystal polymer, polyimide, thermoplastic elastomer and the like can be used.
  • additives may also contain the above-mentioned additives, as well as plasticizers, anti-blocking agents, pigments, dyes, and heat-shielding materials (for example, inorganic heat-shielding fine particles or organic heat-shielding materials having infrared absorbing ability).
  • plasticizers for example, acrylic wax, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate,
  • the resin sheet of the present invention has a concavo-convex structure on the surface by a conventionally known method such as melt fracture or embossing. It is preferable to have.
  • melt fracture and the embossing conventionally known shapes may be appropriately selected.
  • the thickness of one layer (x) in the resin sheet of the present invention is preferably 0.1 mm or more, more preferably 0.2 mm or more, still more preferably 0.3 mm or more, and particularly preferably 0.4 mm or more. Further, it is preferably 5 mm or less, more preferably 4 mm or less, still more preferably 2 mm or less, and particularly preferably 1 mm or less.
  • the layer (x) in the resin sheet is a plurality of layers, the thickness of the plurality of layers (x) one layer in the resin sheet may be the same or different.
  • the thickness of the resin sheet of the present invention is preferably 0.1 mm or more, more preferably 0.2 mm or more, still more preferably 0.3 mm or more, still more preferably 0.4 mm or more, and particularly preferably 0.5 mm or more.
  • it is more preferably 0.6 mm or more, particularly preferably 0.7 mm or more, particularly preferably 0.75 mm or more, and preferably 20 mm or less, more preferably 15 mm or less, still more preferably 10 mm or less, still more preferably.
  • the thickness of the resin sheet is measured by a conventionally known method, for example, a contact type or non-contact type thickness gauge.
  • the resin sheet may be in the state of being rolled up in a roll shape or in the state of being single-striped one by one.
  • the resin sheet of the present invention may have haze, water absorption haze, slow cooling haze, adhesion to glass and yellowness of the ionomer resin of the present invention.
  • the resin sheet of the present invention preferably has a low water content from the viewpoint of being difficult to foam when manufacturing laminated glass.
  • the water content of the resin sheet is preferably 1% by mass or less, more preferably 0.5% by mass or less, still more preferably 0.02% by mass or less, and particularly preferably 0.01% by mass or less.
  • the content can be measured by a potentiometric titration method.
  • the method for producing the resin sheet of the present invention is not particularly limited.
  • the layer (x) is formed by a known film forming method such as an extrusion method, a calendar method, a press method, a solution casting method, a melt casting method, or an inflation method. Can be manufactured.
  • the layer (x) may be used alone as a resin sheet. Further, if necessary, two or more layers (x) or one or more layers (x) and one or more other layers may be laminated by press molding or the like to form a laminated resin sheet.
  • Two or more layers (x), or one or more layers (x) and one or more other layers may be molded by a coextrusion method to form a laminated resin sheet.
  • the resin or the resin composition constituting each layer may be the same or different.
  • the resin temperature at the time of extrusion is preferably 150 ° C. or higher, more preferably 170 ° C. or higher, from the viewpoint of easily stabilizing the discharge of the resin from the extruder and easily reducing mechanical troubles.
  • the resin temperature at the time of extrusion is preferably 250 ° C. or lower, more preferably 230 ° C. or lower, from the viewpoint of easily reducing the decomposition of the resin and the deterioration of the resin due to the decomposition.
  • the resin sheet of the present invention can be suitably used as a laminated glass interlayer film (also simply referred to as an interlayer film). Therefore, the present invention includes a laminated glass interlayer film made of the resin sheet of the present invention.
  • the present invention also includes laminated glass having two glass plates and a laminated glass interlayer film of the present invention arranged between the two glass plates. Since the laminated glass of the present invention has a laminated glass interlayer film made of the resin sheet, it can have excellent transparency.
  • Examples of the glass plate laminated with the interlayer film of the present invention include inorganic glass such as float plate glass, polished plate glass, template glass, meshed plate glass, and heat ray absorbing plate glass, as well as conventionally known organic materials such as polymethyl methacrylate and polycarbonate. Glass or the like can be used. These may be either colorless or colored. These may be used alone or in combination of two or more. Further, the thickness of one glass plate is preferably 100 mm or less, and the thickness of the two glass plates may be the same or different.
  • inorganic glass such as float plate glass, polished plate glass, template glass, meshed plate glass, and heat ray absorbing plate glass, as well as conventionally known organic materials such as polymethyl methacrylate and polycarbonate. Glass or the like can be used. These may be either colorless or colored. These may be used alone or in combination of two or more. Further, the thickness of one glass plate is preferably 100 mm or less, and the thickness of the two glass plates may be the same or different.
  • the laminated glass formed by sandwiching the resin sheet of the present invention between two sheets of glass can be manufactured by a conventionally known method.
  • a method using a vacuum laminator device, a method using a vacuum bag, a method using a vacuum ring, a method using a nip roll, and the like can be mentioned.
  • a vacuum laminator device for example, a glass plate, an interlayer film, and an arbitrary layer (for example, an adhesive resin) at 60 to 200 ° C., particularly 80 to 160 ° C. under a reduced pressure of 1 ⁇ 10 -6 to 1 ⁇ 10 -1 MPa.
  • Laminated glass can be manufactured by laminating layers, etc.).
  • a method using a vacuum bag or a vacuum ring is described in, for example, European Patent No. 1235683, which is a glass plate at 100 to 160 ° C. under a pressure of about 2 ⁇ 10 ⁇ 2 to 3 ⁇ 10 ⁇ 2 MPa.
  • Laminated glass can be manufactured by laminating an interlayer film and any layer.
  • a glass plate, an interlayer film and an arbitrary layer are laminated, degassed by a roll at a temperature equal to or lower than the flow start temperature of the interlayer film, and then pressure-bonded at a temperature closer to the flow start temperature.
  • a method of heating to 30 to 70 ° C. with an infrared heater or the like, degassing with a roll, further heating to 50 to 120 ° C., and then crimping with a roll can be mentioned.
  • the operating conditions of the autoclave process are appropriately selected depending on the thickness and configuration of the laminated glass, and the pressure is, for example, 0.5 to 1.5 MPa. Lower, it is preferable to treat at 100 to 160 ° C. for 0.5 to 3 hours.
  • the laminated glass of the present invention has excellent transparency.
  • the haze of the laminated glass when the sheet thickness of the interlayer film is 0.8 mm is preferably 1.0% or less, more preferably 0.8% or less, still more preferably 0.5. % Or less.
  • the haze of the laminated glass is measured using a haze meter in accordance with JIS K7136: 2000.
  • the laminated glass of the present invention is excellent in transparency even after being heated to 140 ° C. and then slowly cooled from 140 ° C. to 23 ° C. at a rate of 0.1 ° C./min.
  • a haze (slow cooling haze) after heating a laminated glass having a sheet thickness of 0.8 mm to 140 ° C and then slowly cooling from 140 ° C to 23 ° C at a rate of 0.1 ° C / min is preferable. Is 5.0% or less, more preferably 4.5% or less, still more preferably 4.0% or less, and particularly preferably 3.0% or less.
  • the smaller the haze the higher the transparency of the laminated glass. Therefore, the lower limit is not particularly limited and may be, for example, 0.01%.
  • the slow cooling haze is also measured using a haze meter in accordance with JIS K7136: 2000.
  • the laminated glass of the present invention is less colored and is preferably colorless as much as possible.
  • the yellowness (YI) of the laminated glass of the present invention is preferably 2.0 or less, more preferably 1.8 or less, still more preferably 1.5 or less, when the sheet thickness of the interlayer film is 0.8 mm. Particularly preferably, it is 1.0 or less.
  • the yellowness (YI) is measured in accordance with JIS Z8722 using a colorimeter.
  • the adhesiveness of the interlayer film to the glass in the laminated glass of the present invention can be evaluated by the peeling energy between the glass and the ionomer resin measured by the peeling test.
  • the peeling energy between the glass and the ionomer resin measured under standard conditions is preferably 2 kJ / m 2 or more, more preferably 2.5 kJ / m 2 or more, still more preferably 3 kJ / m. 2 or more, particularly preferably 3.5 kJ / m 2 or more.
  • the adhesiveness to the glass under high humidity conditions can be evaluated by the peeling energy between the glass and the ionomer resin measured by the peeling test under Wet conditions.
  • the peeling energy between the glass and the ionomer resin measured under Wet conditions is preferably 0.05 kJ / m 2 or more, more preferably 0.1 kJ / m 2 or more, still more preferably 0.15 kJ / m 2 or more, particularly. It is preferably 0.2 kJ / m 2 or more.
  • the upper limit of the peeling energy under standard conditions and high humidity conditions is not particularly limited and may be 10 kJ / m 2 or less.
  • the peeling test can be performed, for example, by the method described as Peel Adhesion Measurement described in International Publication No. 2019-027865.
  • the peeling energy measured under the standard conditions and the Wet conditions can be measured by, for example, the method described in Examples.
  • the adhesiveness of the interlayer film of the laminated glass of the present invention to the glass plate can also be evaluated by, for example, the compression shear strength test described in International Publication No. 1999-058334.
  • the compressive shear strength is preferably 15 MPa or more, more preferably 20 MPa or more, and particularly preferably 25 MPa or more, from the viewpoint of easily increasing the adhesive strength. Further, the compressive shear strength may be 50 MPa or less from the viewpoint of easily increasing the penetration resistance of the laminated glass.
  • the resin sheet having one or more layers containing the ionomer resin of the present invention is useful as a laminated glass interlayer film.
  • the laminated glass interlayer film is particularly preferable as an interlayer film for laminated glass for structural materials because it is excellent in adhesiveness, transparency, and self-supporting property to a base material such as glass. Further, it is suitable not only as a laminated glass interlayer film for structural materials but also as a laminated glass interlayer film in various applications such as moving bodies such as automobiles, buildings, and solar cells, but it is not limited to these applications. not.
  • the ionomer resins obtained in Examples and Comparative Examples were each dissolved in a mixed solvent of dehydrated toluene / dehydrated acetic acid (75/25% by mass), reacted at 100 ° C. for 2 hours, and then acetone / water (80/20).
  • the (meth) acrylic acid neutralized product unit (B) was converted to the (meth) acrylic acid unit (A) by reprecipitation in a mixed solvent of (% by mass).
  • the obtained resin was sufficiently washed with water, dried, and the following (1) to (3) were performed on the dried resin.
  • the components of the monomer units constituting the resin were analyzed by thermal decomposition GC-MS.
  • the acid value of the resin was measured according to JIS K0070-1992.
  • the resulting solution of decomposition product is diluted with a 50 ml PFA volumetric flask, then filtered using a 0.45 ⁇ m thick filtration filter, and then subjected to high frequency inductively coupled plasma emission spectroscopy (Thermo Fisher SCIENTIFIC).
  • the transition metal content in the resin fat composition was measured by "iCAP6500Duo").
  • melt flow rates of the raw material resins used in Examples and Comparative Examples and the ionomer resins obtained in Examples and Comparative Examples were measured. Specifically, each resin is melted in a cylinder and extruded from a die having a nominal hole diameter of 2.095 mm installed at the bottom of the cylinder under a load condition of 190 ° C. and 2.16 kg, and the amount of resin extruded per 10 minutes. (G / 10 minutes) was measured.
  • thermostable decomposition properties of the ionomer resins obtained in Examples and Comparative Examples were evaluated according to JIS K7120-1987. Specifically, using a differential thermogravimetric simultaneous measuring device TG-DTA7200 (manufactured by Hitachi High-Tech Science Co., Ltd.), each resin was heated at 20 ° C. under a nitrogen atmosphere with a heating rate of 10 ° C./min and a flow rate of 50 mL / min. The weight loss rate when heated to ⁇ 550 ° C. was measured. The 1% weight loss temperature (Td1), which is the temperature at which the weight loss rate becomes 1% based on the weight at 200 ° C., was used as an index of heat degradability.
  • Td1 The 1% weight loss temperature
  • Transparency under high humidity conditions was evaluated by measuring the water absorption haze by the following method.
  • the resin sheet obtained in the same manner as described above was cut into 50 mm squares, and the cut sample was held in a state of being immersed in ion-exchanged water at 23 ° C. for 300 hours to obtain a water-absorbing sample.
  • the haze of the water-absorbing sample is measured using a haze meter HZ-1 (manufactured by Suga Test Instruments Co., Ltd.) in accordance with JIS K7136: 2000. bottom.
  • the laminated glass obtained by the above method was heated to 140 ° C. and then slowly cooled to 23 ° C. at a rate of 0.1 ° C./min.
  • the haze of the laminated glass after the slow cooling operation was measured using a haze meter HZ-1 (manufactured by Suga Test Instruments Co., Ltd.) in accordance with JIS K7136: 2000.
  • Adhesion to glass under Wet conditions Adhesion to glass under high humidity conditions was evaluated by measuring the peeling energy under Wet conditions by the following method.
  • the laminated glass obtained in the same manner as described above is subjected to a universal testing machine (MTS Criterion M45) according to the method described as Peel Adhesion Measurement described in International Publication No. 2019/027865.
  • MTS Criterion M45 The method described as Peel Adhesion Measurement described in International Publication No. 2019/027865.
  • Peel Adhesion Measurement described in International Publication No. 2019/027865.
  • Hastelloy B2 Nickel 68% by mass, molybdenum 28% by mass, iron 2% by mass, chromium 1% by mass, cobalt 1% by mass
  • Hastelloy C22 Nickel 56% by mass, molybdenum 13% by mass, iron 3% by mass, chromium 22% by mass, other 6% mass
  • SUS312L nickel 20% by mass, molybdenum 7% by mass, iron 47% by mass, chromium 21% by mass, etc.
  • SUS316L Nickel 15% by mass, molybdenum 3% by mass, iron 59% by mass, chromium 18% by mass, other 5% by mass
  • SUS304 Nickel 11% by mass, iron 64% by mass, chromium 20% by mass, other 5% by mass
  • SUS316 Nickel 14% by mass, molybdenum 3% by mass, iron 60% by mass, chromium 18% by mass, other 5% by mass
  • Example 1 A pressure vessel equipped with a Hastelloy B2 Maxblend blade was used as the reaction vessel. 100 parts by mass of EMMA1 in Table 1 was introduced into the reaction vessel, 233 parts by mass of toluene was added thereto, and the mixture was stirred at 60 ° C. under 0.02 MPa pressurization to dissolve EMMA1. To the obtained solution, 96 parts by mass of a methanol solution of sodium hydroxide (20% by mass) was added, and the mixture was stirred at 100 ° C. for 4 hours to saponify EMMA1 to convert a part of the methyl methacrylate unit into a sodium methacrylate unit. Converted.
  • Example 2 An ionomer resin was obtained in the same manner as in Example 1 except that a pressure-resistant container made of Hastelloy C22 was used as a reaction vessel instead of the pressure-resistant container made of Hastelloy B2 and EMMA2 was used instead of EMMA1.
  • the analysis results and evaluation results of the obtained ionomer resin are shown in Tables 2 and 3.
  • Example 3 It is used as a Hastelloy C22 pressure-resistant container reaction tank instead of the Hastelloy B2 pressure-resistant container, and EMMA2 is used instead of EMMA1.
  • An ionomer resin was obtained in the same manner as in Example 1 except that it was added dropwise to the reaction solution. The analysis results and evaluation results of the obtained ionomer resin are shown in Tables 2 and 3.
  • Example 4 An ionomer resin was obtained in the same manner as in Example 1 except that a pressure-resistant container made of SUS312L was used as a reaction tank instead of the pressure-resistant container made of Hastelloy B2 and EMMA2 was used instead of EMMA1.
  • the analysis results and evaluation results of the obtained ionomer resin are shown in Tables 2 and 3.
  • Example 5 An ionomer resin was obtained in the same manner as in Example 1 except that a pressure-resistant container made of SUS316L was used as a reaction vessel instead of the pressure-resistant container made of Steroy B2 and EEA1 was used instead of EMMA1.
  • the analysis results and evaluation results of the obtained ionomer resin are shown in Tables 2 and 3.
  • Example 6 With reference to the method described in US Pat. No. 6,518,365, ethylene and methacrylic acid are copolymerized to obtain an ethylene- (meth) acrylic acid copolymer, and then the copolymer is partially neutralized with sodium hydroxide. bottom.
  • An ionomer resin containing a transition metal was obtained by adding 3.4 ⁇ 10 -4 parts by mass of a 20% aqueous solution of iron (II) chloride in an extruder to 100 parts by mass of the obtained partially neutralized product. ..
  • the analysis results and evaluation results of the obtained ionomer resin are shown in Tables 2 and 3.
  • Example 1 A pressure vessel made of SUS304 is used as a reaction vessel instead of a pressure vessel made of Hastelloy B2, and EMMA2 is used instead of EMMA1.
  • An ionomer resin was obtained in the same manner as in Example 1 except that it was added dropwise to the reaction solution. The analysis results and evaluation results of the obtained ionomer resin are shown in Tables 2 and 3.
  • Comparative Example 2 An ionomer resin was obtained in the same manner as in Comparative Example 1 except that a pressure-resistant container made of SUS316 was used as a reaction tank instead of the pressure-resistant container made of SUS304. Table 2 shows the analysis results and evaluation results of the obtained ionomer resin.
  • Example 3 An ionomer resin was obtained in the same manner as in Example 1 except that a pressure-resistant container made of Hastelloy C22 was used as a reaction vessel instead of the pressure-resistant container made of Hastelloy B2 and EMMA3 was used instead of EMMA1.
  • the analysis results and evaluation results of the obtained ionomer resin are shown in Tables 2 and 3.
  • the ionomer resin obtained in the examples has a lower water absorption haze and higher transparency even in a water-absorbed state than the ionomer resin obtained in the comparative example, under Wet conditions. It was confirmed that the peeling energy was high, the adhesiveness to the glass was high even under high humidity conditions, and the heat-resistant decomposition property was high. Further, the resin sheet produced by using the ionomer resin obtained in the examples had a small amount of gelled product and had a good appearance.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
PCT/JP2021/034820 2020-09-29 2021-09-22 アイオノマー樹脂、樹脂シートおよび合わせガラス Ceased WO2022071065A1 (ja)

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EP21875367.1A EP4223795A4 (en) 2020-09-29 2021-09-22 IONOMER RESIN, RESIN FILM AND LAMINATED GLASS
KR1020237010337A KR20230075444A (ko) 2020-09-29 2021-09-22 아이오노머 수지, 수지 시트, 및 접합 유리
US18/028,781 US20230331887A1 (en) 2020-09-29 2021-09-22 Ionomer resin, resin sheet, and laminated glass
JP2022505432A JP7186329B2 (ja) 2020-09-29 2021-09-22 アイオノマー樹脂、樹脂シートおよび合わせガラス
CN202180066479.7A CN116348430B (zh) 2020-09-29 2021-09-22 离聚物树脂、树脂片及夹层玻璃

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