WO2015022957A1 - フッ化ビニリデン系樹脂を含むフィルム、及び積層フィルム、並びに積層体 - Google Patents
フッ化ビニリデン系樹脂を含むフィルム、及び積層フィルム、並びに積層体 Download PDFInfo
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- WO2015022957A1 WO2015022957A1 PCT/JP2014/071282 JP2014071282W WO2015022957A1 WO 2015022957 A1 WO2015022957 A1 WO 2015022957A1 JP 2014071282 W JP2014071282 W JP 2014071282W WO 2015022957 A1 WO2015022957 A1 WO 2015022957A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/16—Homopolymers or copolymers or vinylidene fluoride
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/71—Resistive to light or to UV
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/12—Photovoltaic modules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
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- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/16—Homopolymers or copolymers of vinylidene fluoride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/14—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
- C08L33/12—Homopolymers or copolymers of methyl methacrylate
Definitions
- the present invention relates to a film containing a vinylidene fluoride resin, a laminated film, and a laminate.
- the present invention claims priority based on Japanese Patent Application No. 2013-168523 filed in Japan on August 14, 2013, the contents of which are incorporated herein by reference.
- Vinylidene fluoride film is excellent in weather resistance, heat resistance, chemical resistance and mechanical properties, plastics such as vinyl chloride resin, polyester resin, polyolefin resin, acrylic resin, ABS resin, polycarbonate resin, and stainless steel plate, It is used by being laminated with a metal plate such as an aluminum plate or a galvanized steel plate.
- the film has a high visible light transmittance, while maintaining a low haze,
- it is required to block ultraviolet rays. That is, the vinylidene fluoride film is used for a sealing agent such as EVA, a barrier film, and a back sheet that bonds the vinylidene fluoride film and the solar battery cell by blocking ultraviolet rays having a wavelength of 360 nm or less. It is required to prevent photodegradation of a polyester film and an adhesive for bonding them together.
- the film has a thickness of 50 ⁇ m, it is necessary to add an ultraviolet absorber of at least 2 wt%.
- an ultraviolet absorber of at least 2 wt%.
- vinylidene fluoride resin is compatible with the ultraviolet absorber.
- 2 wt% or more of an ultraviolet absorber is added to the film, there is a problem that the haze of the film increases.
- the present invention As shown in a comparative example of the present invention described later, it is formed from a resin composition obtained by mixing polyvinylidene fluoride, polymethyl methacrylate, and 2- (2Hbenzotriazol-2-yl) -p-cresol as an ultraviolet absorber.
- the vinylidene fluoride-based film can achieve both a high visible light transmittance and an ultraviolet blocking property.
- 2- (2Hbenzotriazol-2-yl) -p-cresol there are several types of UV absorbers that can block UV rays without reducing the transmittance of visible light (wavelength 380 to 780 nm). .
- it is difficult for vinylidene fluoride films containing these ultraviolet absorbers to maintain the ultraviolet blocking performance for a long period of time, and the conventional technology has a problem that the ultraviolet blocking performance is lost in a relatively short time. is there.
- Patent Documents 1 and 2 studies are made to express ultraviolet blocking over a long period of time by increasing the molecular weight of the ultraviolet absorber.
- the introduction rate of the UV-absorbing monomer unit into the acrylic resin is low, so it is necessary to increase the thickness of the film or to add a large amount of methacrylic resin. In that case, it is difficult to improve the transparency, chemical resistance and heat resistance of the film.
- Patent Document 3 shows excellent ultraviolet blocking performance by mixing a small amount of vinylidene fluoride resin with an acrylic resin obtained by copolymerizing 30 wt% of an ultraviolet absorbing monomer with methyl methacrylate. Although it is described that a vinylidene fluoride-based resin can be obtained, the vinylidene fluoride-based resin has a problem that the haze is large.
- An object of the present invention is to provide a film containing a vinylidene fluoride resin that maintains high total light transmittance and low haze over a long period of time and is excellent in ultraviolet blocking performance, a laminated film, and a laminated body.
- a film comprising a resin composition comprising an acrylic resin (A) and a vinylidene fluoride resin (B),
- the acrylic resin (A) comprises an acrylic monomer (a-1) unit and an ultraviolet absorbing monomer (a-2) unit,
- the proportion of the UV-absorbing monomer (a-2) unit in the acrylic resin (A) is 4 to 25 with respect to the total mass of all monomer units in the acrylic resin (A).
- the haze value of the film is (C)% and the thickness of the film is (D) ⁇ m, the value of (C) / (D) is 0.2% / ⁇ m or less.
- the film as described in.
- the ratio of the ultraviolet absorbing monomer (a-2) unit in the acrylic resin (A) is based on the total mass of all monomer units in the acrylic resin (A).
- the content of the acrylic resin (A) in the resin composition is 15 to 75% by mass with respect to the total amount of the acrylic resin (A) and the vinylidene fluoride resin (B). [1] to [5]. [7] The content of the acrylic resin (A) in the resin composition is 19 to 40% by mass with respect to the total amount of the acrylic resin (A) and the vinylidene fluoride resin (B).
- the ultraviolet absorbing monomer (a-2) is one or more monomers selected from benzotriazole monomers, benzophenone monomers, and triazine monomers.
- [12] A laminate in which the laminated film according to [11] is laminated on a substrate.
- a film, a laminated film, and a laminated body containing a vinylidene fluoride resin that can maintain a high total light transmittance over a long period of time and have excellent ultraviolet blocking performance.
- the film of the present invention is composed of a resin composition containing an acrylic resin (A) and a vinylidene fluoride resin (B).
- the acrylic resin (A) is a resin composed of an acrylic monomer (a-1) unit and an ultraviolet absorbing monomer (a-2) unit, and the acrylic resin (A) in the acrylic resin (A)
- the proportion of the ultraviolet absorbing monomer (a-2) unit is 4 to 25% by mass with respect to the total mass of all monomer units in the acrylic resin (A).
- Acrylic monomer (a-1) unit (hereinafter referred to as “acrylic monomer (a-1)” as “monomer (a-1)” and “acrylic monomer (a-1) unit as“ The (a-1) unit ”may be introduced into the acrylic resin (A) in order to enhance the compatibility with the vinylidene fluoride resin (B).
- acrylic monomer (a-1) used as a raw material for the (a-1) unit examples include methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, i-propyl ( (Meth) acrylate, n-butyl (meth) acrylate, i-butyl (meth) acrylate, t-butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate, methacrylic acid, glycidyl (meth) acrylate , Tetrahydrofurfuryl (meth) acrylate, allyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, methoxyethyl (meth) acrylate, ethoxyethyl (meth) acrylate, diamin
- alkyl methacrylate having an alkyl group having 1 to 4 carbon atoms is preferable from the viewpoint of obtaining a film having high heat resistance, and methyl methacrylate is more preferable from the viewpoint of obtaining a film having higher total light transmittance.
- UV-absorbing monomer (a-2) UV-absorbing monomer (a-2) unit
- UV-absorbing monomer (a-2) as “monomer (a-2)
- UV-absorbing monomer (a-2) unit Is sometimes referred to as “(a-2) unit”
- the proportion of the UV-absorbing monomer (a-2) unit in the acrylic resin (A) is 4-25 with respect to the total mass of all monomer units in the acrylic resin (A). % By mass. By setting it within this range, the ultraviolet blocking performance can be maintained for a long time, and the transparency and chemical resistance of the film can be improved.
- the ultraviolet-absorbing monomer (a-2) used as a raw material for the monomer unit include benzotriazole monomers, benzophenone monomers, and triazine monomers.
- benzotriazole monomer examples include 2- [2′-hydroxy-5 ′-((meth) acryloyloxymethyl) phenyl] -2H-benzotriazole, 2- [2′-hydroxy-5 ′-( (Meth) acryloyloxyethyl) phenyl] -2H-benzotriazole, 2- [2′-hydroxy-3′-t-butyl-5 ′-((meth) acryloyloxyethyl) phenyl] -2H-benzotriazole, 2 -[2'-hydroxy-5'-t-butyl-3 '-((meth) acryloyloxyethyl) phenyl] -2H-benzotriazole, 2- [2'-hydroxy-5'-((meth) acryloyloxy Ethyl) phenyl] -5-chloro-2H-benzotriazole, 2- [2′-hydroxy-5 ′-((meth) acryloyloxy
- benzophenone monomer examples include 2-hydroxy-4-methacryloyloxybenzophenone, 2-hydroxy-4- [2- (meth) acryloyloxy] ethoxybenzophenone, 2-hydroxy-4- [2- (meth) [Acryloyloxy] butoxybenzophenone, 2,2′-dihydroxy-4- [2- (meth) acryloyloxy] ethoxybenzophenone, 2-hydroxy-4- [2- (meth) acryloyloxy] ethoxy-4 ′-(2- Hydroxyethoxy) benzophenone, 2-hydroxy-3-t-butyl-4- [2- (meth) acryloyloxy] ethoxybenzophenone, 2-hydroxy-3-t-butyl-4- [2- (meth) acryloyloxy] Examples include butoxybenzophenone.
- triazine monomer examples include 2- [2-hydroxy-4- (2- (meth) acryloyloxyethoxy) phenyl] -4,6-diphenyl-1,3,5-triazine, 2,4- Diphenyl-6- [2-hydroxy-4- (2- (meth) acryloyloxy) phenyl] -1,3,5-triazine, 2,4-bis (2-methylphenyl) -6- [2-hydroxy- 4- (2- (meth) acryloyloxyethoxy) phenyl] -1,3,5-triazine, 2,4-bis (2-methoxyphenyl) -6- [2-hydroxy-4- (2- (meth)) Acryloyloxyethoxy) phenyl] -1,3,5-triazine, 2,4-bis (2-ethylphenyl) -6- [2-hydroxy-4- (2- (meth) acryloyloxyethoxy) fur Nyl] -1,3,5-triazine
- Each of these monomers may be used alone or in combination of two or more.
- 2- [2′-hydroxy-5 ′-(methacryloyloxyethyl) phenyl] -2H-benzotriazole, 2-hydroxy-4-methacryloyloxybenzophenone, 2-hydroxy-4- [2- (meth) acryloyloxy Ethoxybenzophenone is preferable because of its excellent ultraviolet absorption performance.
- the acrylic resin (A) of the present invention can contain other monomer units without departing from the object of the present invention.
- the monomer used as a raw material for the other monomer unit is not particularly limited as long as it has the effects of the present invention.
- unsaturated dicarboxylic acid anhydrides such as maleic anhydride and itaconic anhydride, N-phenylmaleimide, N-cyclohexylmaleimide and the like.
- the contents of the acrylic monomer (a-1) unit and the ultraviolet absorbing monomer (a-2) unit in the acrylic resin (A) were obtained by proton nuclear magnetic resonance ( 1 H-NMR) measurement. It can be calculated from the specific 1 H signal intensity ratio obtained.
- the acrylic resin (A) was dissolved in a deuterated solvent such as deuterated chloroform at a concentration of 5 mg / mL, and 1 H-NMR was measured to obtain (a-1
- the ratio of the peak intensity derived from the unit (a-2) to the sum of the peak intensity derived from the unit) and the peak intensity derived from the unit (a-2) can be obtained by expressing in mass%.
- the mass average molecular weight of the acrylic resin (A) is preferably 200,000 or less, more preferably 150,000 or less, and still more preferably 100,000 or less. In such a range, the compatibility with the vinylidene fluoride resin (B) is good.
- the lower limit of the mass average molecular weight of the acrylic resin (A) is preferably 30,000 or more, more preferably 50,000 or more, and further preferably 70,000 or more. If it is such a range, a film with a small haze will be obtained.
- the mass average molecular weight of the acrylic resin (A) can be determined by performing gel permeation chromatography (GPC) measurement using tetrahydrofuran as a solvent and calibrating using polystyrene having a known molecular weight as a standard sample. That is, in one aspect of the present invention, the acrylic resin (A) has a mass average molecular weight of preferably 30,000 to 200,000, more preferably 50,000 to 150,000, and 70,000 to 100,000. More preferably.
- the content of the UV-absorbing monomer (a-2) unit in the acrylic resin (A) can be obtained as a film having a smaller haze, the total of all monomer units in the acrylic resin (A) can be obtained. It is 4 to 25% by mass based on the mass.
- the upper limit of the proportion of the unit (a-2) is preferably 21% by mass or less, and more preferably 17% by mass or less.
- the lower limit of the (a-2) unit in the acrylic resin (A) is preferably 5% by mass or more, more preferably 7% by mass or more. Preferably, it is 8 mass% or more. That is, the proportion of the (a-2) unit in the acrylic resin (A) is preferably 5 to 21% by mass, more preferably 7 to 17% by mass, and 8 to 17% by mass. Is more preferable.
- the acrylic resin (A) of the present invention can be obtained by polymerizing a monomer mixture containing an acrylic monomer (a-1) and an ultraviolet absorbing monomer (a-2).
- the polymerization method include a suspension polymerization method, a bulk polymerization method, and a solution polymerization method, but the introduction rate of the UV-absorbing monomer unit into the acrylic resin is increased using an oil-soluble polymerization initiator.
- the suspension polymerization method is preferable from the viewpoint of being capable of being produced and being suitable for industrial production.
- “suspension polymerization” means that polymerization is carried out by stirring and suspending a monomer mixture and a solvent. As the solvent, water is preferable.
- an oil-soluble polymerization initiator is preferable.
- 2,2′-azobisisobutyronitrile, 2,2′-azobis-2-methylbutyronitrile, Azo initiators such as 2,2′-azobis-2,4-dimethylvaleronitrile; benzoyl peroxide, di-t-butyl peroxide, t-hexyl peroxypivalate, t-hexyl peroxyisopropyl carbonate, t And peroxide initiators such as -butylperoxy 2-ethylhexanoate and 1,1-di-t-butylperoxy-2-methylcyclohexane.
- benzoyl peroxide 2,2′-azobisisobutyronitrile, 2,2′-azobis-2,4-dimethylvaleronitrile, t-hexyl are considered in consideration of excellent handleability.
- Peroxypivalate is preferred.
- the amount of these polymerization initiators used is preferably in the range of 0.001 to 3 parts by mass with respect to 100 parts by mass of the monomer mixture.
- the polymerization temperature for suspension polymerization is preferably in the range of 50 to 150 ° C, more preferably in the range of 50 to 130 ° C.
- a chain transfer agent may be added when the acrylic resin (A) is prepared by suspension polymerization.
- the chain transfer agent used in the suspension polymerization include t-butyl mercaptan, n-butyl mercaptan, n-octyl mercaptan, n-dodecyl mercaptan, t-dodecanethiol and the like.
- the amount of these chain transfer agents used is preferably in the range of 0 to 3 parts by mass with respect to 100 parts by mass of the monomer mixture.
- a dispersant may be added when the acrylic resin (A) is prepared by suspension polymerization.
- the dispersant used in the suspension polymerization include polyvinyl alcohol, alkali metal salt of (meth) acrylic acid homopolymer or copolymer, copolymer of methyl methacrylate and sodium salt of 2-sulfoethyl methacrylate.
- examples include coalescence, carboxyl cellulose, gelatin, starch, barium sulfate, calcium sulfate, calcium carbonate, magnesium carbonate, and calcium phosphate. These may be used alone or in combination of two or more.
- a homopolymer or copolymer of methacrylic acid or a copolymer of methyl methacrylate and sodium salt of 2-sulfoethyl methacrylate is preferable to use.
- the amount of these dispersants used is preferably in the range of 0.01 to 5 parts by mass with respect to 100 parts by mass of water as the solvent.
- an electrolyte such as sodium chloride, potassium chloride, sodium sulfate, potassium sulfate, manganese sulfate or the like can be used together with these dispersants as a dispersion aid.
- the proportion of the (a-2) unit in the acrylic resin (A) may be the charging proportion of the monomer (a-2).
- water is used as a solvent
- an oil-soluble polymerization initiator is used as a polymerization initiator
- a monomer mixture is subjected to suspension polymerization.
- the proportion of the UV-absorbing monomer (a-2) unit in all the monomer units contained in the acrylic resin (A) is the UV-absorbing property contained in the monomer mixture. It can be controlled to be equal to the proportion of the monomer (a-2).
- the vinylidene fluoride resin (B) means a polymer containing 50% by mass or more of vinylidene fluoride units.
- the vinylidene fluoride resin (B) is a copolymer
- examples of the copolymerizable component copolymerized with vinylidene fluoride include hexafluoropropylene and tetrafluoroethylene.
- vinylidene fluoride resin (B) polyvinylidene fluoride is preferable from the viewpoint of obtaining a film having good transparency and heat resistance.
- the vinylidene fluoride resin (B) may be used alone or in combination of two or more.
- Industrially available vinylidene fluoride resins (B) include, for example, Kynar 760, Kynar 740, Kynar 720, Kynar 710 manufactured by Arkema Co., Ltd .; KFT # 850, KFT # 1000, KFT # 1100 manufactured by Kureha Co., Ltd. Solef 1006, 1008, 6008, 11008, 21508, 1010, 6010, 11010, 21510 manufactured by Solvay Solexis Co., Ltd.
- the weight average molecular weight of the vinylidene fluoride resin (B) can be obtained by performing gel permeation chromatography (GPC) measurement using dimethylformamide as a solvent and calibrating using polystyrene having a known molecular weight as a standard sample. it can.
- GPC gel permeation chromatography
- the mass average molecular weight of the vinylidene fluoride resin (B) is preferably 450,000 or less, more preferably 400,000 or less, and even more preferably 300,000 or less. Further, from the viewpoint of obtaining a film having a small haze, the lower limit of the mass average molecular weight of the vinylidene fluoride resin (B) is preferably 50,000 or more, more preferably 100,000 or more, and further preferably 150,000 or more. That is, the mass average molecular weight of the vinylidene fluoride resin (B) is preferably 50,000 to 450,000, more preferably 100,000 to 400,000, and further preferably 150,000 to 300,000.
- the film in the present invention is composed of a resin composition containing an acrylic resin (A) and a vinylidene fluoride resin (B).
- the content of the acrylic resin (A) in the total of the acrylic resin (A) and the vinylidene fluoride resin (B) is lower, a film having higher heat resistance is obtained.
- the content of the acrylic resin (A) in the resin composition is preferably 75% by mass or less based on the total amount of the acrylic resin (A) and the vinylidene fluoride resin (B). 30 mass% or less is more preferable, and 20 mass% or less is still more preferable.
- the higher the acrylic resin (A) content the smaller the haze.
- the lower limit of the content of the acrylic resin (A) in the resin composition is 5% by mass or more based on the total amount of the acrylic resin (A) and the vinylidene fluoride resin (B). Is preferable, 20 mass% or more is more preferable, and 70 mass% or more is still more preferable.
- the content of the acrylic resin (A) in the resin composition may be selected from the acrylic resin (A) and the vinylidene fluoride resin ( 5 mass% or more is preferable with respect to the total amount of B), 7 mass% or more is more preferable, and 13 mass% or more is still more preferable.
- the content of the acrylic resin (A) is preferably 15 to 75% by mass, and 19 to 40% by mass with respect to the total amount of the acrylic resin (A) and the vinylidene fluoride resin (B). More preferred is 19 to 30% by mass.
- the total light transmittance of the film is preferably 93.1% or more, more preferably 93.6% or more, still more preferably 93.9% or more when measured in accordance with JIS K7361-1.
- the haze of the film is usually higher as the film is formed thicker even if the same resin is used.
- (C) / (D) is It is preferably 0 to 0.2% / ⁇ m, more preferably 0 to 0.16% / ⁇ m, still more preferably 0 to 0.14% / ⁇ m.
- the mass% of the UV-absorbing monomer (a-2) unit in the acrylic resin (A) may be adjusted according to the target film thickness.
- the unit mass should be the same.
- the mass per unit area of the ultraviolet absorbing monomer (a-2) unit in the film is preferably 0.6 g / m 2 or more, and 0.8 g / m 2.
- the mass per unit area of the unit (a-2) in the film is obtained by multiplying the ratio of the UV-absorbing monomer (a-2) unit to the total amount of the resin composition by the density and thickness of the resin composition. It can be obtained by the method to do.
- “protecting the base” means preventing light deterioration.
- JIS K7121, 3 of a film JIS K7121, 3 of a film.
- the heat of crystal melting measured in accordance with the method described in (2) is preferably 18 J / g or more, more preferably 21 J / g or more, and further preferably 24 J / g or more. . If the crystal melting heat of the film is 18 J / g or more, the film can be produced without sticking to a cooling medium at the time of film production, and scratches and blocking can be prevented from being generated during film transportation, which is preferable.
- the heat of crystal melting of the film can be increased by increasing the content of the vinylidene fluoride resin (B) or by increasing the temperature of the cooling medium during film production. As the crystal melting heat and melting peak temperature are higher, a film having higher heat resistance is obtained.
- the thickness of the film is preferably 10 to 500 ⁇ m, more preferably 20 to 200 ⁇ m, and further preferably 25 to 100 ⁇ m.
- the film of the present invention is obtained by melt-extruding a resin composition containing an acrylic resin (A) and a vinylidene fluoride resin (B), and the obtained melt-extruded product is at least selected from a metal roll, a non-metal roll, and a metal belt. It is preferable to manufacture by a method of forming a film by contacting with one cooling medium.
- melt extrusion method examples include a T-die method and an inflation method.
- T-die method is preferable from the viewpoint of economy.
- the melt extrusion temperature is preferably about 150 to 300 ° C.
- an extruder a single screw extruder and a twin screw extruder are mentioned, for example.
- Examples of the metal roll include a metal mirror surface touch roll, a metal sleeve (metal thin-film pipe) and a molding roll described in Japanese Patent No. 2,808,251 or International Publication No. 1997 / 28,950 pamphlet. There are rolls used in the sleeve touch method. Moreover, as a nonmetallic roll, the touch roll made from a silicon rubber is mentioned, for example. Furthermore, examples of the metal belt include a metal endless belt.
- the molten extrudate is sandwiched and rolled without any bank (resin pool). It is preferable to form a film by transferring the surface without any problem.
- the melt-extruded product in the cooling process is surface-transferred without being rolled, so the heat shrinkage rate of the film formed by this method can be reduced. .
- shape processing such as embossing and matting is performed on at least one surface of these cooling media. These shapes can be transferred to one or both sides of the film.
- a film having high heat resistance can be obtained by setting the surface temperature of the cooling medium to 35 ° C. or higher. Moreover, a film with high transparency can be obtained by setting the surface temperature of the cooling medium to 120 ° C. or less.
- the surface of the film of the present invention can be subjected to a surface treatment as necessary in order to improve adhesion with a different material.
- the surface treatment include corona discharge treatment, ozone treatment, low temperature plasma treatment using oxygen gas, nitrogen gas and the like, glow discharge treatment, and oxidation treatment using chemicals.
- pretreatment can be performed as necessary.
- the film of the present invention includes, as necessary, light stabilizers, heat stabilizers, anti-blocking agents such as synthetic silica and silicon resin powder, plasticizers, antibacterial agents, antifungal agents, bluing agents, antistatic agents and the like. Various additives may be contained.
- the light stabilizer captures and stabilizes radicals generated in the resin to prevent deterioration of the resin.
- NH type, N-CH 3 type, N-acyl type, N-OR type And hindered amine-based or phenol-based light stabilizers For example, NH type, N-CH 3 type, N-acyl type, N-OR type And hindered amine-based or phenol-based light stabilizers.
- the content of the light stabilizer is preferably, for example, 1 to 10 parts by mass with respect to a total of 100 parts by mass of the vinylidene fluoride resin (B) and the acrylic resin (A).
- the heat stabilizer prevents the resin from being thermally deteriorated, and examples thereof include phenol-based, amine-based, sulfur-based and phosphoric acid-based antioxidants.
- the content of the heat stabilizer is preferably, for example, 1 to 10 parts by mass with respect to 100 parts by mass in total of the vinylidene fluoride resin (B) and the acrylic resin (A).
- the film of the present invention can be made into a laminated film by laminating a thermoplastic resin layer.
- thermoplastic resin As a material which comprises a thermoplastic resin layer, a well-known thermoplastic resin can be used, for example, the following are mentioned.
- Acrylic resin such as polymethyl methacrylate; ABS resin (acrylonitrile-butadiene-styrene copolymer); AS resin (acrylonitrile-styrene copolymer); vinyl chloride resin; polyolefin such as polyethylene, polypropylene, polybutene, polymethylpentene -Based resins; ethylene-vinyl acetate copolymers or saponified products thereof, polyolefin copolymers such as ethylene- (meth) acrylic acid ester copolymers; polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyarylate, polycarbonate, etc.
- Polyester resins Polyamide resins such as 6-nylon, 6,6-nylon, 6,10-nylon, 12-nylon; Polystyrene resins; Fiber inducers such as cellulose acetate and nitrocellulose Body; fluororesin such as polyvinyl fluoride, polyvinylidene fluoride, polytetrafluoroethylene, ethylene-tetrafluoroethylene copolymer, etc .; and two or three or more copolymers or mixtures selected from these; Composites, laminates, etc.
- the thermoplastic resin may be used alone.
- thermoplastic resin layer for example, the following general compounding agents can be blended as necessary. Stabilizers, antioxidants, lubricants, processing aids, plasticizers, impact agents, foaming agents, fillers, antibacterial agents, antifungal agents, mold release agents, antistatic agents, colorants, UV absorbers, light stability Agents, heat stabilizers, flame retardants, etc.
- the thickness of the thermoplastic resin layer may be appropriately determined as necessary, and is usually preferably about 1 to 500 ⁇ m.
- the thermoplastic resin layer preferably has a thickness that absorbs surface defects of the base material so that the film has a completely smooth upper surface.
- the thickness of a thermoplastic resin layer means the distance from the interface with the film of this invention to the surface which is contacting the air of a thermoplastic resin layer.
- the thickness can be measured before lamination using a film thickness meter, after lamination, the method of subtracting the thickness of the film of the present invention from the total thickness, the method of directly measuring by observing the cross section, the present It can be measured using a film thickness meter that is calculated from the light absorptance using the density difference from the film of the invention or a film thickness meter that is calculated from the interference difference of reflected light.
- thermoplastic resin layer As a method of obtaining a laminated film, known methods such as a method of applying a coating solution containing the thermoplastic resin on the film, a method of thermal lamination, dry lamination, wet lamination, hot melt lamination of the thermoplastic resin, etc. A method is mentioned. Moreover, you may laminate
- the film or laminated film can be laminated on a substrate to form a laminate.
- the material of the base material include: resin; wood board such as wood veneer, wood plywood, particle board, medium density fiber board (MDF); water quality board such as wood fiber board; metal such as iron and aluminum.
- resin when using resin as a base material, it is preferable to use what shape
- the laminate includes a base material, a thermoplastic resin layer, and a film, the thermoplastic resin layer is laminated on the base material, and the top of the thermoplastic resin layer. It is preferable that the film is laminated.
- the laminate includes a base material, a thermoplastic resin layer, and a film, the film is laminated on the base material, and the heat is applied on the film. It is preferable that a plastic resin layer is laminated.
- resins can be used, and examples thereof include the following.
- Polyolefin resins such as polyethylene, polypropylene, polybutene, polymethylpentene, ethylene-propylene copolymer, ethylene-propylene-butene copolymer, olefinic thermoplastic elastomer; polystyrene resin, ABS resin (acrylonitrile-butadiene-styrene copolymer)
- General purpose thermoplastic or thermosetting resins such as acrylic resins such as polymethylmethacrylate, urethane resins, unsaturated polyester resins, and epoxy resins; polyphenylene oxide, AS resin (acrylonitrile-styrene copolymer);
- General-purpose engineering resins such as polystyrene resin, polycarbonate resin, polyacetal, polycarbonate-modified polyphenylene ether, polyethylene terephthalate; polysulfone, polyphenylene sulfide Super engineering resins such as polyphenylene
- the material of the base material is preferably a film containing a vinylidene fluoride resin, or a film that can be melt bonded to the laminated film.
- acrylic resin, ABS resin, AS resin, polystyrene resin, polycarbonate resin, vinyl chloride resin, polyester resin, or a resin containing these as a main component can be given.
- An acrylic resin, ABS resin, AS resin, polycarbonate resin, vinyl chloride resin, or a resin containing these as a main component is preferable in terms of adhesiveness, and in particular, an ABS resin, polycarbonate resin, or a resin containing these as a main component is more preferable. preferable.
- a resin that is not thermally fused such as a polyolefin resin
- a surface treatment such as the above-described corona discharge treatment or low-temperature plasma treatment, or by providing an adhesive layer.
- the base material subjected to such treatment or the like can be adhered to one selected from the group consisting of a film containing a vinylidene fluoride resin and a laminated film thereof.
- the laminate of the present invention As a method for producing the laminate of the present invention, a known method such as thermal lamination can be used when the laminate has a constant thickness and the base material can be heat-sealed.
- the thickness is constant means that the film or laminated film of the present invention and the substrate can be laminated without a gap.
- Single-crystal silicon solar cells in addition to wood boards such as wood veneer, wood plywood, particle board, medium density fiber board (MDF), wood boards such as wood fiber board, metals such as iron and aluminum, glass, etc.
- wood boards such as wood veneer, wood plywood, particle board, medium density fiber board (MDF), wood boards such as wood fiber board, metals such as iron and aluminum, glass, etc.
- MDF medium density fiber board
- one aspect of the present invention is a laminate including a base material, an adhesive layer, a thermoplastic resin layer, and a film, and the adhesive layer is directly laminated on the base material, and the adhesion
- the thermoplastic resin layer is laminated on a layer
- the film is laminated on the thermoplastic resin layer.
- One aspect of the present invention is a laminate including a base material, an adhesive layer, a thermoplastic resin layer, and a film, wherein the adhesive layer is directly laminated on the base material, and the adhesion is performed.
- the film is laminated on a layer, and the thermoplastic resin layer is laminated on the film.
- polyolefin resin ethylene-vinyl acetate copolymer, ionomer resin, ethylene acrylic acid copolymer, ethylene methacrylic acid copolymer, polyethylene resin, polypropylene resin, etc.
- unsaturated carboxylic acid acrylic acid, itaconic acid, anhydrous Acid-modified polyorene fin resin modified with maleic acid, fumaric acid, etc .
- unsaturated silane compounds vinylyltrimethoxysilane, vinyltriethoxysilane, vinyltripropoxysilane, vinyltriisopropoxysilane, vinyltributoxysilane, vinyl Tripentyloxysilane, vinyltriphenoxysilane, vinyltribenzyloxysilane, vinyltrimethylenedioxysilane, vinyltriethylenedioxysilane, vinylpropionyloxysilane, vinyl
- silane-modified polyolefin resin or an acid-modified polyolefin resin having excellent adhesiveness it is preferable to use a silane-modified polyolefin resin or an acid-modified polyolefin resin having excellent adhesiveness.
- a known method such as an insert molding method or an in-mold molding method can be used.
- the in-mold molding method is to heat a film or its laminated film, perform vacuum molding in a mold having a vacuum drawing function, and then injection-mold a resin as a base material in the same mold.
- This is a method of obtaining a film or a laminate in which the laminated film and a substrate are integrated. From the viewpoints of workability and economy, an in-mold molding method that can perform film molding and injection molding in one step is preferable.
- the film having high total light transmittance and excellent ultraviolet ray blocking performance according to the present invention, and its laminated film and laminate are suitably used for protecting polyester, polycarbonate, vinyl chloride and the like.
- the following products or its structural member is mentioned, for example.
- Weather strip is mentioned as a vehicle exterior use.
- Weather strip is mentioned as a vehicle exterior use.
- Weather strip is mentioned as a vehicle exterior use.
- Weather strip is mentioned as a vehicle exterior use.
- Weather strip is mentioned as a vehicle exterior use.
- Weather strip is mentioned as a vehicle exterior use.
- Weather strip is mentioned as a vehicle exterior use.
- Weather strip is mentioned as a vehicle exterior use.
- Weather strip is mentioned as a vehicle exterior use.
- one aspect of the present invention is the above-described film, laminated film, and laminate of weather strip, bumper, bumper guard, side mud guard, body panel, spoiler, front grill, strut mount, wheel cap, center pillar, door mirror.
- One aspect of the present invention is for protecting the instrument panel, console box, meter cover, door lock pzel, steering wheel, power window switch base, center cluster, and dashboard of the film, laminate film, and laminate. Use for film.
- Examples of the use of the surface decorative material include the following. Front panels, buttons, emblems, housings for mobile phones, display windows, buttons, etc. for AV equipment and furniture products.
- One aspect of the present invention is the use of the film, the laminated film, and the laminated body as a film for protecting AV equipment, furniture product front panels, buttons, emblems, mobile phone housings, display windows, and buttons. It is.
- Examples of building interior materials include wall surfaces, ceilings, and floors.
- One aspect of the present invention is the use of the film, the laminated film, and the laminated body for a film for protecting a wall surface, a ceiling, and a floor.
- Outer walls such as siding, rain gutters, fences, roofs, gates, windbreak boards, etc.
- furniture such as window frames, doors, handrails, sills, duck, etc.
- One aspect of the present invention is to protect the outer walls, gutters, fences, roofs, gates, windbreak boards, window frames, doors, handrails, sills, and ducks of the films, laminated films, and laminates. Use for film.
- One aspect of the present invention is a Fresnel lens, a polarizing film, a polarizer protective film, a retardation film, a light diffusion film, a viewing angle widening film, a reflective film, an antireflection film, the film, the laminated film, and the laminated body. It is used for an antiglare film, a brightness enhancement film, a prism sheet, a microlens array, a conductive film for a touch panel, a light guide film, and an electronic paper film.
- Solar cell surface protective film solar cell sealing film, solar cell back surface protective film, solar cell base film, gas barrier film protective film, and the like.
- One aspect of the present invention is a solar cell surface protective film, a solar cell sealing film, a solar cell back surface protective film, a solar cell base film, and a gas barrier film protective film of the film, the laminated film, and the laminated body.
- Various packaging containers and materials such as bottles, cosmetic containers, accessory cases, miscellaneous goods such as prizes and accessories, agricultural vinyl houses, protective films for highway sound insulation boards, and outermost protective films for traffic signs.
- One aspect of the present invention is that the film, the laminated film, and the laminate are applied to a packaging container, a packaging material, a miscellaneous goods, an agricultural vinyl house, a protective film for a highway sound insulation board, and an outermost protective film for a traffic sign. Is use.
- the film or laminated film was made by Dainippon Plastics Co., Ltd., using an i-super UV tester, the bath temperature was kept constant at 63 ° C., and water spraying was not performed, and 100 mW / cm
- the light resistance test was carried out by carrying out ultraviolet irradiation for 300 hours at an irradiation intensity of 2 .
- the total light transmittance of the film or laminated film was measured using a haze meter (manufactured by Nippon Denshoku Industries Co., Ltd., trade name: NDH2000) according to JIS K7361-1.
- haze was measured only before this light resistance test.
- Acrylic resin (A) is dissolved in deuterated chloroform at a concentration of 5 mg / mL, and integration of peaks derived from acrylic monomer (a-1) unit and ultraviolet absorbing monomer (a-2) unit is performed. From the intensity and peak position, the mass ratio of the UV-absorbing monomer (a-2) unit was quantified. The measurement temperature was 25 ° C., and the number of integrations was 64 times.
- Mass average molecular weight and molecular weight distribution of acrylic resin (A) Gel permeation chromatography (GPC) measurement using tetrahydrofuran as a solvent is carried out, and the mass average is obtained by calibrating using polystyrene having a known molecular weight as a standard sample. Molecular weight (Mw) and number average molecular weight (Mn) were determined. Mw / Mn was defined as molecular weight distribution.
- the air in the reaction vessel was sufficiently replaced with nitrogen gas, and then stirred with 0.02 part of a methyl methacrylate / potassium methacrylate / 2-sulfoethyl sodium salt copolymer as a dispersant. .3 parts was added and heated to 80 ° C. to perform suspension polymerization in a nitrogen gas stream. After observing the heat of polymerization, the temperature was raised to 95 ° C. and held for another 30 minutes to complete the polymerization. The obtained polymer was dehydrated and dried to obtain an acrylic resin (A) -1. The polymerization conversion rate with respect to the charged amount of the monomer (a-2) was 97%.
- Example 1 [Example 1] ⁇ 1. Production of film> Polyvinylidene fluoride (Kynar 720, vinylidene fluoride unit) manufactured by Arkema Co., Ltd. as 20 parts of the acrylic resin (A) -1 obtained in Production Example 1 and vinylidene fluoride resin (B) -1 is 100 mass. %) 80 parts were mixed with a Henschel mixer. The mixture thus obtained was supplied to a vent type twin screw extruder (manufactured by Toshiba Machine Co., Ltd., trade name: TEM-35B) heated to 180 to 220 ° C. and kneaded to obtain pellets.
- TEM-35B vent type twin screw extruder
- the extruder was set to an extrusion temperature of 180 to 220 ° C. and a T-die temperature of 220 ° C., and extrusion was performed on one cooling roll at 80 ° C. to obtain a film 1 having a thickness of 50 ⁇ m.
- Table 2 shows the total light transmittance and ultraviolet transmittance of the film.
- a laminated film was produced by the following procedure. First, a urethane-based adhesive (manufactured by Toyo Ink Co., Ltd., trade name: LIS603) and an isocyanate curing agent (manufactured by Toyo Ink Co., Ltd., trade name: DYNAGRAND CR-001) at a ratio of 10: 1 (part). The mixture was diluted with methyl ethyl ketone so that the solid content was 25% by mass, and an adhesive mixture was prepared.
- a urethane-based adhesive manufactured by Toyo Ink Co., Ltd., trade name: LIS603
- an isocyanate curing agent manufactured by Toyo Ink Co., Ltd., trade name: DYNAGRAND CR-001
- This adhesive mixture was applied to the film and dried in an oven at 80 ° C. for 5 minutes to form an adhesive layer. Subsequently, the vapor deposition surface of the polyethylene terephthalate film (Mitsubishi Resin Co., Ltd. make, brand name: Tech barrier L, thickness 12 micrometers) which vapor-deposited silica, and the adhesive bond layer formation surface of the said film were bonded together. Thereafter, the adhesive was cured by being held at 40 ° C. for 7 days to obtain a laminated film 1.
- the evaluation results are shown in Table 2.
- the concentration (mass%) of the ultraviolet absorber in the resin is “(mass ratio of ultraviolet absorbing monomer (a-2) unit in acrylic resin (A) ⁇ acrylic resin (A ) Parts by mass) / 100 ”.
- Example 2 A film 2 and a laminated film 2 having a thickness of 50 ⁇ m were obtained in the same manner as in Example 1 except that the acrylic resin (A) -2 obtained in Production Example 2 was used as the acrylic resin (A). The evaluation results are shown in Table 2.
- Example 3 A film 3 and a laminated film 3 having a thickness of 50 ⁇ m were obtained in the same manner as in Example 1 except that the acrylic resin (A) -5 obtained in Production Example 5 was used as the acrylic resin (A). The evaluation results are shown in Table 2.
- Example 4 A film 4 and a laminated film 4 having a thickness of 50 ⁇ m were obtained in the same manner as in Example 1 except that the acrylic resin (A) -6 obtained in Production Example 6 was used as the acrylic resin (A). The evaluation results are shown in Table 2.
- Example 5 As Example 1, except that 26 parts of acrylic resin (A) -10 obtained in Production Example 10 and 74 parts of vinylidene fluoride resin (B) -1 were used as the acrylic resin (A). Thus, a film 5 having a thickness of 50 ⁇ m was obtained. The evaluation results are shown in Table 2.
- Example 6 As Example 1, except that 74 parts of acrylic resin (A) -11 obtained in Production Example 11 and 26 parts of vinylidene fluoride resin (B) -1 were used as acrylic resin (A). Thus, a film 6 having a thickness of 50 ⁇ m was obtained. The evaluation results are shown in Table 2.
- Example 5 Example except that 3.5 parts of acrylic resin (A) -9 obtained in Production Example 9 and 96.5 parts of vinylidene fluoride resin (B) -1 were used as acrylic resin (A). In the same manner as in Example 1, a film C5 having a thickness of 50 ⁇ m was obtained. The evaluation results are shown in Table 2.
- Comparative Example 1 since the ultraviolet absorber is not copolymerized with the acrylic resin (A), the ultraviolet blocking performance is lost in the short-time light resistance test, and the layers other than the film are deteriorated by the transmitted ultraviolet rays. Therefore, it was found that the total light transmittance of the laminated film was lowered.
- Comparative Example 2 as shown in Production Example 4, since the proportion of the UV-absorbing monomer (a-2) unit in the acrylic resin (A) was less than 4% by mass, a short light resistance test was performed. It was found that the UV blocking performance was lost. Moreover, since layers other than a film deteriorated with the transmitted ultraviolet-ray, it turned out that the total light transmittance of a laminated
- Comparative Examples 3 and 4 since the proportion of the UV-absorbing monomer (a-2) unit in the acrylic resin (A) is greater than 25% by mass, the acrylic resin (A) and the vinylidene fluoride resin Since the compatibility with (B) was poor, it was found that the haze of the film was larger than that of Example 4. Similarly, in Comparative Example 5, since the ratio of the ultraviolet absorbing monomer (a-2) unit in the acrylic resin (A) is large, a film having a larger haze than that in Example 1 can be obtained. It was.
- the film, laminated film, and laminate of the present invention can maintain high total light transmittance over a long period of time and are excellent in ultraviolet blocking performance, and therefore are preferably used for protecting polyester, polycarbonate, vinyl chloride, and the like. Can do.
- multilayer film, and a laminated body can be used conveniently for uses, such as products, its structural members, etc., such as vehicle interior / exterior components, architectural interior / exterior components, and solar cell components.
Abstract
Description
即ち、前記フッ化ビニリデン系フィルムには、波長360nm以下の紫外線を遮断することによって、フッ化ビニリデン系フィルムと太陽電池セルとを接着するEVA等の封止剤、バリアフィルム、バックシートに用いられるポリエステル系フィルム、及びそれらを貼り合わせるための接着剤の光劣化を防止することが要求されている。
また、特許文献3には、メチルメタクリレートに、紫外線吸収性単量体を30質量%超共重合させたアクリル系樹脂を、少量フッ化ビニリデン系樹脂へ混合することで優れた紫外線遮断性能を示すフッ化ビニリデン系樹脂が得られることが記載されているが、前記フッ化ビニリデン系樹脂はヘーズが大きいという課題がある。
[1]アクリル系樹脂(A)、及びフッ化ビニリデン系樹脂(B)を含む樹脂組成物を含むフィルムであって、
前記アクリル系樹脂(A)が、アクリル系単量体(a-1)単位と、紫外線吸収性単量体(a-2)単位からなり、
前記アクリル系樹脂(A)中の前記紫外線吸収性単量体(a-2)単位の割合が、前記アクリル系樹脂(A)中の全単量体単位の総質量に対して、4~25質量%である、フィルム。
[2]前記フィルムのヘーズ値を(C)%、前記フィルムの厚さを(D)μmとした時、(C)/(D)の値が0.2%/μm以下である、[1]に記載のフィルム。
[3]前記アクリル系樹脂(A)中の前記紫外線吸収性単量体(a-2)単位の割合が、前記アクリル系樹脂(A)中の全単量体単位の総質量に対して、8~17質量%である、[1]又は[2]に記載のフィルム。
[4]前記フッ化ビニリデン系樹脂(B)が、フッ化ビニリデンのホモポリマーである、[1]~[3]のいずれか一項に記載のフィルム。
[5]前記アクリル系樹脂(A)が、前記アクリル系単量体(a-1)と、前記紫外線吸収性単量体(a-2)を含む単量体混合物を、懸濁重合することによって得られる樹脂である、[1]~[4]のいずれか一項に記載のフィルム。
[6]前記樹脂組成物における前記アクリル系樹脂(A)の含有量が、前記アクリル系樹脂(A)と前記フッ化ビニリデン系樹脂(B)の総量に対して、15~75質量%である、[1]~[5]のいずれか一項に記載のフィルム。
[7]前記樹脂組成物におけるアクリル系樹脂(A)の含有量が、前記アクリル系樹脂(A)と前記フッ化ビニリデン系樹脂(B)の総量に対して、19~40質量%である、[1]~[6]のいずれか一項に記載のフィルム。
[8]前記アクリル系単量体(a-1)が、炭素数1~4のアルキル基を有するアルキルメタクリレートである、[1]~[7]のいずれか一項に記載のフィルム。
[9]前記紫外線吸収性単量体(a-2)が、ベンゾトリアゾール系単量体、ベンゾフェノン系単量体、及びトリアジン系単量体から選択される一種以上の単量体である、[1]~[8]のいずれか一項に記載のフィルム。
[10]前記紫外線吸収性単量体(a-2)がベンゾトリアゾール系単量体である、[1]~[9]のいずれか一項に記載のフィルム。
[11][1]~[10]のいずれか一項に記載のフィルムの上に、熱可塑性樹脂層が積層されている、積層フィルム。
[12]基材の上に、[11]に記載の積層フィルムが積層されている、積層体。
[13]車両内外装部品、建築用内外装部品、及び太陽電池部品を保護するためのフィルムへの、[1]~[10]のいずれか一項に記載のフィルムの使用。
[14]車両内外装部品、建築用内外装部品、及び太陽電池部品を保護するためのフィルムへの、[11]に記載の積層フィルムの使用。
[15]車両内外装部品、建築用内外装部品、及び太陽電池部品を保護するためのフィルムへの、[12]に記載の積層体の使用。
アクリル系樹脂(A)は、アクリル系単量体(a-1)単位及び紫外線吸収性単量体(a-2)単位で構成される樹脂であり、前記アクリル系樹脂(A)中の前記紫外線吸収性単量体(a-2)単位の割合が、前記アクリル系樹脂(A)中の全単量体単位の総質量に対して、4~25質量%である。
アクリル系単量体(a-1)単位(以下、アクリル系単量体(a-1)を、「単量体(a-1)」、アクリル系単量体(a-1)単位を「(a-1)単位」と言うこともある)は、フッ化ビニリデン系樹脂(B)との相溶性を高めるために、アクリル系樹脂(A)中に導入されるものである。
前記(a-1)単位の原料となるアクリル系単量体(a-1)としては、例えば、メチル(メタ)アクリレート、エチル(メタ)アクリレート、n-プロピル(メタ)アクリレート、i-プロピル(メタ)アクリレート、n-ブチル(メタ)アクリレート、i-ブチル(メタ)アクリレート、t-ブチル(メタ)アクリレート、2-エチルヘキシル(メタ)アクリレート、ラウリル(メタ)アクリレート、メタクリル酸、グリシジル(メタ)アクリレート、テトラヒドロフルフリル(メタ)アクリレート、アリル(メタ)アクリレート、2-ヒドロキシエチル(メタ)アクリレート、ヒドロキシプロピル(メタ)アクリレート、メトキシエチル(メタ)アクリレート、エトキシエチル(メタ)アクリレート、ジアミノエチル(メタ)アクリレート及びそのメチルクロライド塩、ジエチルアミノエチル(メタ)アクリレート及びそのベンジルクロライド塩、フタル酸2-メタクリロイルオキシエチル、ヘキサヒドロフタル酸2-メタクリロイルオキシエチル等が挙げられる。
これらは、1種を単独で用いてもよく2種以上を併用してもよい。
紫外線吸収性単量体(a-2)単位(以下、紫外線吸収性単量体(a-2)を「単量体(a-2)」、紫外線吸収性単量体(a-2)単位を「(a-2)単位」と言うこともある)はフィルムに紫外線吸収性を付与するために、アクリル系樹脂(A)に導入されるものである。前記アクリル系樹脂(A)中の前記紫外線吸収性単量体(a-2)単位の割合は、前記アクリル系樹脂(A)中の全単量体単位の総質量に対して、4~25質量%である。この範囲にすることで、紫外線の遮断性能を長期に維持することができ、フィルムの透明性及び耐薬品性を良好にすることができる。
この単量体単位の原料となる紫外線吸収性単量体(a-2)としては、例えば、ベンゾトリアゾール系単量体、ベンゾフェノン系単量体、トリアジン系単量体が挙げられる。
中でも2-[2’-ヒドロキシ-5’-(メタアクリロイルオキシエチル)フェニル]-2H-ベンゾトリアゾール、2-ヒドロキシ-4-メタクリロイルオキシベンゾフェノン、2-ヒドロキシ-4-[2-(メタ)アクリロイルオキシ]エトキシベンゾフェノンが紫外線吸収性能に優れるため好ましい。
また、本発明のアクリル系樹脂(A)は本発明の目的を逸脱しない範囲で、他の単量体単位を含有することができる。
前記その他の単量体単位の原料となる単量体としては、本発明の効果を有する限り特に限定されないが、例えば、スチレン等の芳香族ビニル単量体、アクリロニトリル等のシアン化ビニル単量体、無水マレイン酸、無水イタコン酸等の不飽和ジカルボン酸無水物、N-フェニルマレイミド、N-シクロヘキシルマレイミド等が挙げられる。
具体的には、アクリル系樹脂(A)を重水素化溶媒、例えば、重水素化クロロホルムに、5mg/mLの濃度で溶解させて、1H-NMRを測定し、得られた(a-1)単位由来のピーク強度、及び(a-2)単位由来のピーク強度の和に対する、(a―2)単位由来のピーク強度の割合を質量%で表すことで求めることができる。
また、紫外線吸収性能に優れるフィルムを得る観点から、アクリル系樹脂(A)中の(a-2)単位の下限は、5質量%以上であることが好ましく、7質量%以上であることがより好ましく、8質量%以上であることが更に好ましい。すなわち、アクリル系樹脂(A)の(a-2)単位の割合は、5~21質量%であることが好ましく、7~17質量%であることがより好ましく、8~17質量%であることが更に好ましい。
本発明のアクリル系樹脂(A)は、アクリル系単量体(a-1)及び紫外線吸収性単量体(a-2)を含む単量体混合物を重合することによって得ることができる。重合方法としては、例えば懸濁重合法、塊状重合法、溶液重合法が挙げられるが、油溶性の重合開始剤を用いてアクリル系樹脂への紫外線吸収性単量体単位の導入率を高くすることができる点及び工業的な生産に適しているという観点から、懸濁重合法が好ましい。
ここで、「懸濁重合」とは、単量体混合物と溶媒とを撹拌して懸濁させて重合を行なうことを意味する。溶媒としては、水が好ましい。
重合開始剤の中では、取り扱い性が優れる点を考慮すると、ベンゾイルパーオキサイド、2,2’-アゾビスイソブチロニトリル、2,2’-アゾビス-2,4-ジメチルバレロニトリル、t-ヘキシルパーオキシピバレートが好ましい。
これらの連鎖移動剤の使用量は、上記単量体混合物100質量部に対して0~3質量部の範囲が好ましい。
これらの分散剤の使用量は、溶媒である水100質量部に対して、0.01~5質量部の範囲が好ましい。
従って、本発明の1つの側面において、アクリル系樹脂(A)中の(a-2)単位の割合は、単量体(a-2)の仕込み割合であってもよい。
本発明のアクリル系樹脂(A)の製造方法の1つの側面おいては、溶媒として水を用い、重合開始剤として油溶性の重合開始剤を使用し、かつ単量体混合物を懸濁重合することによって、ほぼ重合反応率100%の効果を得ることができる。その結果、前述の通り、アクリル系樹脂(A)に含まれる全ての単量体単位中の紫外線吸収性単量体(a-2)単位の割合が、単量体混合物に含まれる紫外線吸収性単量体(a-2)の割合と同等となるように、制御することができる。
本発明においてフッ化ビニリデン系樹脂(B)とは、フッ化ビニリデン単位を50質量%以上含む重合体を意味する。フッ化ビニリデン系樹脂(B)が共重合体である場合、フッ化ビニリデンと共重合される共重合性成分としては、例えば、ヘキサフルオロプロピレン及びテトラフルオロエチレンが挙げられる。
本発明におけるフィルムは、アクリル系樹脂(A)及びフッ化ビニリデン系樹脂(B)を含む樹脂組成物によって構成されている。
また、本発明の1つの側面において、紫外線吸収性能に優れるフィルムを得る観点から、樹脂組成物中のアクリル系樹脂(A)の含有率は、アクリル系樹脂(A)及びフッ化ビニリデン系樹脂(B)の総量に対して、5質量%以上が好ましく、7質量%以上がより好ましく、13質量%以上が更に好ましい。
以上を考慮すると、アクリル系樹脂(A)及びフッ化ビニリデン系樹脂(B)の総量に対し、アクリル系樹脂(A)の含有率は、15~75質量%が好ましく、19~40質量%がより好ましく、19~30質量%が更に好ましい。
フィルムのヘーズは、通常、同じ樹脂を用いても製膜する厚さが厚い方が高くなる。フィルムのヘーズ値を(C)%、フィルムの厚さを(D)μmとした時、フィルムのヘーズ値をJIS K7361-1に準拠して測定した場合に、(C)/(D)が、0~0.2%/μmとなることが好ましく、0~0.16%/μmがより好ましく、0~0.14%/μmが更に好ましい。
下地を紫外線から保護するために、フィルム中における紫外線吸収性単量体(a-2)単位の単位面積当たりの質量は、0.6g/m2以上であることが好ましく、0.8g/m2以上であることがより好ましく、1.5g/m2以上であることが更に好ましい。
またフィルム中の(a-2)単位の単位面積当たりの質量は、樹脂組成物の総量に対する紫外線吸収性単量体(a-2)単位の割合に、樹脂組成物の密度と厚さを乗算する方法により求めることができる。
ここで、「下地の保護」とは、光劣化防止のことを意味する。
フィルムの結晶融解熱が18J/g以上であれば、フィルム製造時の冷却媒体にフィルムが貼り付くことがなく製造でき、またフィルムの搬送時に、擦り傷やブロッキングが発生することを防止できるため好ましい。
本発明のフィルムはアクリル系樹脂(A)及びフッ化ビニリデン系樹脂(B)を含む樹脂組成物を溶融押出しし、得られた溶融押出物を金属ロール、非金属ロール及び金属ベルトから選ばれる少なくとも一つの冷却媒体に接触させて製膜する方法で製造することが好ましい。
本発明のフィルムの表面には異素材との接着性等を向上させるために、必要に応じて表面処理を施すことができる。表面処理としては、例えば、コロナ放電処理、オゾン処理、酸素ガス、窒素ガス等を用いた低温プラズマ処理、グロー放電処理及び化学薬品等を用いて処理する酸化処理が挙げられる。尚、表面処理に際し、必要に応じて前処理を施すことができる。
本発明のフィルムは、必要に応じて、光安定剤、耐熱安定剤、合成シリカやシリコン樹脂粉末等のブロッキング防止剤、可塑剤、抗菌剤、防カビ剤、ブルーイング剤、帯電防止剤等の各種添加剤を含有していてもよい。
本発明のフィルムは、熱可塑性樹脂層を積層して積層フィルムとすることができる。
前記熱可塑性樹脂は単独で使用してもよい。
また、熱可塑性樹脂層の厚さは、本発明のフィルムとの界面から、熱可塑性樹脂層の空気と接触している面までの距離のことを意味する。また、前記厚さは、積層前に測定できる場合は膜厚計を用いて、積層後は総厚さから本発明のフィルムの厚さを引く方法、断面を観察して直接測定する方法、本発明のフィルムとの密度差を利用し光の吸収率から計算する膜厚計や反射した光の干渉差から割り出す膜厚計を用いて測定することができる。
前記フィルム又は積層フィルムは基材に積層して積層体とすることができる。基材の材質としては、樹脂;木材単板、木材合板、パーティクルボード、中密度繊維板(MDF)等の木材板;木質繊維板等の水質板;鉄、アルミニウム等の金属等が挙げられる。
ここで、樹脂を基材として用いる場合は、後述する樹脂をフィルム状に成形したものを基材として用いることが好ましい。
本発明の1つの側面において、積層体は、基材と、熱可塑性樹脂層と、フィルムとを備え、前記基材の上に、前記熱可塑性樹脂層が積層され、前記熱可塑性樹脂層の上にフィルムが積層されていることが好ましい。
また、本発明の1つの側面において、積層体は、基材と、熱可塑性樹脂層と、フィルムとを備え、前記基材の上に、前記フィルムが積層され、前記フィルムの上に、前記熱可塑性樹脂層が積層されていることが好ましい。
木材単板、木材合板、パーティクルボード、中密度繊維板(MDF)等の木材板、木質繊維板等の木質板、鉄、アルミニウム等の金属等、ガラス等の他、単結晶シリコン型太陽電池セル、多結晶シリコン型太陽電池セル、アモルファスシリコン型太陽電池セル、微結晶シリコン型太陽電池セル、球状シリコン型太陽電池セル、薄膜結晶シリコン型太陽電池セル、アモルファスシリコンゲルマニウム型太陽電池セル、テルル化カドミウム型太陽電池セル、ヒ化ガリウム型太陽電池セル、銅インジウムセレナイド型等、Cu、In、Ga、Al、Se、S等から成るI-III-VI族化合物を用いるカルコパイライト型太陽電池セル、有機薄膜型太陽電池セル、色素増感型太陽電池セル等に例示される各種太陽電池セル等。
すなわち、本発明の1つの側面は、基材と、接着層と、熱可塑性樹脂層と、フィルムとを備える積層体であって、前記基材の上に前記接着層が直接積層され、前記接着層の上に前記熱可塑性樹脂層が積層され、前記熱可塑性樹脂層の上に前記フィルムが積層されている積層体である。
また、本発明の1つの側面は、基材と、接着層と、熱可塑性樹脂層と、フィルムとを備える積層体であって、前記基材の上に前記接着層が直接積層され、前記接着層の上に前記フィルムが積層され、前記フィルムの上に前記熱可塑性樹脂層が積層されている積層体である。
本発明の全光線透過率が高く紫外線の遮断性能に優れるフィルム、またその積層フィルム及び積層体は、ポリエステルやポリカーボネート、塩化ビニル等の保護に好適に用いられる。用途としては、例えば、以下の製品又はその構成部材が挙げられる。
すなわち、本発明の1つの側面は、前記フィルム、積層フィルム、及び積層体の、ウェザーストリップ、バンパー、バンパーガード、サイドマッドガード、ボディーパネル、スポイラー、フロントグリル、ストラットマウント、ホイールキャップ、センターピラー、ドアミラー、センターオーナメント、サイドモール、ドアモール、ウインドモール、ウィンドウ、ヘッドランプカバー、テールランプカバー、及び風防部分を保護するためのフィルムへの使用である。
本発明の1つの側面は、前記フィルム、積層フィルム、及び積層体の、インストルメントパネル、コンソールボックス、メーターカバー、ドアロックペゼル、ステアリングホイール、パワーウィンドウスイッチベース、センタークラスター、及びダッシュボードを保護するためのフィルムへの使用である。
本発明の1つの側面は、前記フィルム、積層フィルム、及び積層体の、AV機器、家具製品のフロントパネル、ボタン、エンブレム、携帯電話のハウジング、表示窓、ボタンを保護するためのフィルムへの使用である。
本発明の1つの側面は、前記フィルム、積層フィルム、及び積層体の、壁面、天井、床を保護するためのフィルムへの使用である。
本発明の1つの側面は、前記フィルム、積層フィルム、及び積層体の、外壁、雨樋、塀、屋根、門扉、破風板等、窓枠、扉、手すり、敷居、及び鴨居を保護するためのフィルムへの使用である。
本発明の1つの側面は、前記フィルム、積層フィルム、及び積層体の、フレネルレンズ、偏光フィルム、偏光子保護フィルム、位相差フィルム、光拡散フィルム、視野角拡大フィルム、反射フィルム、反射防止フィルム、防眩フィルム、輝度向上フィルム、プリズムシート、マイクロレンズアレイ、タッチパネル用導電フィルム、導光用途フィルム、及び電子ペーパー用途フィルムへの使用である。
本発明の1つの側面は、前記フィルム、積層フィルム、及び積層体の、太陽電池表面保護フィルム、太陽電池用封止フィルム、太陽電池用裏面保護フィルム、太陽電池用基盤フィルム、ガスバリアフィルム用保護フィルムへの使用である。
本発明の1つの側面は、前記フィルム、積層フィルム、及び積層体の、包装容器、包装材料、雑貨、農業用ビニルハウス、高速道路遮音板用保護フィルム、及び交通標識用最表面保護フィルムへの使用である。
実施例中の「部」は、「質量部」を表す。
フィルム又は積層フィルムについて、大日本プラスチックス(株)製、アイスーパーUVテスターを用いて、槽内温度63℃一定とし、水噴霧は行なわずに、100mW/cm2の照射強度で紫外線照射を300時間行なうことによって、耐光性試験を実施した。この耐光性試験前後で、ヘーズメーター(日本電色工業(株)製、商品名:NDH2000)を用い、JIS K7361-1に準拠してフィルム又は積層フィルムの全光線透過率を測定した。フィルムについてはこの耐光性試験前のみヘーズを測定した。
フィルムについて、(1)と同様にして耐光性試験を実施した。この耐光性試験前後で、紫外可視光分光光度計(日本分光(株)製、V-630)を用いて波長350nmにおける紫外線の光線透過率を測定した。
アクリル系樹脂(A)における紫外線吸収性単量体(a-2)単位の含有率は1H-NMR測定(日本電子(株)製、商品名:JNM EX-270)を行なうことで求めた。
テトラヒドロフランを溶媒に用いたゲル浸透クロマトグラフィー(GPC)測定を行ない、分子量が既知のポリスチレンを標準試料に用いて校正することで質量平均分子量(Mw)及び数平均分子量(Mn)を求めた。Mw/Mnを分子量分布とした。
アクリル系単量体(a-1)としてメチルメタクリレート(MMA)90.5部、紫外線吸収性単量体(a-2)として、2-[2’-ヒドロキシ-5’-(メタアクリロイルオキシエチル)フェニル]-2H-ベンゾトリアゾール(大塚化学(株)製、製品名:RUVA-93)9.5部、開始剤として2-2’アゾビスイソブチロニトリル0.1部、連鎖移動剤としてn-オクチルメルカプタン0.2部、及び、脱イオン水200部を撹拌機、還流冷却器、窒素ガス導入口の付いた容量10Lの反応容器に仕込んだ。
製造例1において、「MMA」を95部、「RUVA-93」を5部としたこと以外は製造例1と同様にして、アクリル系樹脂(A)-2を得た。評価結果を表1に示す。
製造例1において、「RUVA-93」を用いなかったこと以外は製造例1と同様にしてアクリル系樹脂(A)-3を得た。評価結果を表1に示す。
製造例1と同様の反応容器内に、脱イオン水200部、ジオクチルスルホコハク酸ナトリウム0.25部、ナトリウムホルムアルデヒドスルホキシレ-ト0.15部、エチレンジアミン四酢酸-2-ナトリウム0.001部、及び硫酸第一鉄0.00025部を仕込んだ。
製造例1において、「MMA」を84部、「RUVA-93」を16部とし、反応容器を40℃で保持して「RUVA-93」を溶解させた後、80℃に昇温し重合を進めた以外は製造例1と同様にして、アクリル系樹脂(A)-5を得た。評価結果を表1に示す。
「MMA」を80部、「RUVA-93」を20部としたこと以外は製造例5と同様にして、アクリル系樹脂(A)-6を得た。評価結果を表1に示す。
「MMA」を73部、「RUVA-93」を27部としたこと以外は製造例5と同様にして、アクリル系樹脂(A)-7を得た。評価結果を表1に示す。
「MMA」を70部、「RUVA-93」を30部としたこと以外は製造例5と同様にして、アクリル系樹脂(A)-8を得た。評価結果を表1に示す。
「MMA」を50部、「RUVA-93」を50部としたこと以外は製造例5と同様にして、アクリル系樹脂(A)-9を得た。評価結果を表1に示す。
「MMA」を92.8部、「RUVA-93」を7.2部としたこと以外は製造例1と同様にして、アクリル系樹脂(A)-10を得た。評価結果を表1に示す。
「MMA」を91.0部、「RUVA-93」を9.0部としたこと以外は製造例1と同様にして、アクリル系樹脂(A)-11を得た。評価結果を表1に示す。
<1.フィルムの製造>
製造例1で得られたアクリル系樹脂(A)-1を20部、フッ化ビニリデン系樹脂(B)-1として、アルケマ(株)製のポリフッ化ビニリデン(Kynar720、フッ化ビニリデン単位:100質量%)80部をヘンシェルミキサーによって混合した。このようにして得られた混合物を180~220℃に加熱したベント式2軸押出機(東芝機械(株)製、商品名:TEM-35B)に供給し、混練してペレットを得た。
さらに、以下の手順で積層フィルムを製造した。先ず、ウレタン系接着剤(東洋インキ(株)製、商品名:LIS603)及びイソシアネート系硬化剤(東洋インキ(株)製、商品名:DYNAGRAND CR-001)を10:1(部)の割合で、固形分25質量%となるようメチルエチルケトンで希釈を行ない、接着剤混合液を準備した。
尚、表2中、樹脂中の紫外線吸収剤の濃度(質量%)は、「(アクリル系樹脂(A)における紫外線吸収性単量体(a-2)単位の質量比×アクリル系樹脂(A)の質量部)/100」の計算式より求めた値である。
アクリル系樹脂(A)として製造例2で得られたアクリル系樹脂(A)-2を用いたこと以外は実施例1と同様にして厚さ50μmのフィルム2及び積層フィルム2を得た。評価結果を表2に示す。
アクリル系樹脂(A)として製造例5で得られたアクリル系樹脂(A)-5を用いたこと以外は実施例1と同様にして厚さ50μmのフィルム3及び積層フィルム3を得た。評価結果を表2に示す。
アクリル系樹脂(A)として製造例6で得られたアクリル系樹脂(A)-6を用いたこと以外は実施例1と同様にして厚さ50μmのフィルム4及び積層フィルム4を得た。評価結果を表2に示す。
アクリル系樹脂(A)として製造例10で得られたアクリル系樹脂(A)-10を26部、フッ化ビニリデン系樹脂(B)-1を74部用いたこと以外は実施例1と同様にして厚さ50μmのフィルム5を得た。評価結果を表2に示す。
アクリル系樹脂(A)として製造例11で得られたアクリル系樹脂(A)-11を74部、フッ化ビニリデン系樹脂(B)-1を26部用いたこと以外は実施例1と同様にして厚さ50μmのフィルム6を得た。評価結果を表2に示す。
アクリル系樹脂(A)として製造例3で得られたアクリル系樹脂(A)-3を用い、紫外線吸収剤として、2-(2Hベンゾトリアゾール-2-イル)-p-クレゾール(BASF社製、商品名;TinuvinP)を2.1部用いたこと以外は実施例1と同様にして厚さ50μmのフィルムC1及び積層フィルムC1を得た。評価結果を表2に示す。
アクリル系樹脂(A)として製造例4で得られたアクリル系樹脂(A)-4を用いたこと以外は実施例1と同様にして厚さ50μmのフィルムC2及び積層フィルムC2を得た。評価結果を表2に示す。
アクリル系樹脂(A)として製造例7で得られたアクリル系樹脂(A)-7を用いたこと以外は実施例1と同様にして厚さ50μmのフィルムC3を得た。評価結果を表2に示す。
アクリル系樹脂(A)として製造例8で得られたアクリル系樹脂(A)-8を用いたこと以外は実施例1と同様にして厚さ50μmのフィルムC4及び積層フィルムC4を得た。評価結果を表2に示す。
アクリル系樹脂(A)として製造例9で得られたアクリル系樹脂(A)-9を3.5部、フッ化ビニリデン系樹脂(B)-1を96.5部用いたこと以外は実施例1と同様にして厚さ50μmのフィルムC5を得た。評価結果を表2に示す。
比較例2では製造例4で示したようにアクリル系樹脂(A)中における紫外線吸収性単量体(a-2)単位の割合が4質量%よりも小さかったため、短時間の耐光性試験で紫外線遮断性能が失われていることが分かった。また、透過した紫外線によってフィルム以外の層が劣化するため、積層フィルムの全光線透過率が低下することが分かった。
比較例3及び4では、アクリル系樹脂(A)中における紫外線吸収性単量体(a-2)単位の割合が25質量%よりも大きいため、アクリル系樹脂(A)とフッ化ビニリデン系樹脂(B)との相溶性が悪いので、実施例4と比べてフィルムのヘーズが大きいことが分かった。
同様に比較例5では、アクリル系樹脂(A)中における紫外線吸収性単量体(a-2)単位の割合が大きいことから、実施例1と比べてヘーズが大きいフィルムが得られることが分かった。
Claims (15)
- アクリル系樹脂(A)、及びフッ化ビニリデン系樹脂(B)を含む樹脂組成物を含むフィルムであって、
前記アクリル系樹脂(A)が、アクリル系単量体(a-1)単位と、紫外線吸収性単量体(a-2)単位からなり、
前記アクリル系樹脂(A)中の前記紫外線吸収性単量体(a-2)単位の割合が、前記アクリル系樹脂(A)中の全単量体単位の総質量に対して、4~25質量%である、フィルム。 - 前記フィルムのヘーズ値を(C)%、前記フィルムの厚さを(D)μmとした時、(C)/(D)の値が0.2%/μm以下である、請求項1に記載のフィルム。
- 前記アクリル系樹脂(A)中の前記紫外線吸収性単量体(a-2)単位の割合が、前記アクリル系樹脂(A)中の全単量体単位の総質量に対して、8~17質量%である、請求項1に記載のフィルム。
- 前記フッ化ビニリデン系樹脂(B)がフッ化ビニリデンのホモポリマーである、請求項1に記載のフィルム。
- 前記アクリル系樹脂(A)が前記アクリル系単量体(a-1)と、前記紫外線吸収性単量体(a-2)を含む単量体混合物を、懸濁重合することによって得られる樹脂である、請求項1に記載のフィルム。
- 前記樹脂組成物における前記アクリル系樹脂(A)の含有量が、前記アクリル系樹脂(A)と前記フッ化ビニリデン系樹脂(B)の総量に対して、15~75質量%である、請求項1に記載のフィルム。
- 前記樹脂組成物における前記アクリル系樹脂(A)の含有量が、前記アクリル系樹脂(A)と前記フッ化ビニリデン系樹脂(B)の総量に対して、19~40質量%である、請求項1に記載のフィルム。
- 前記アクリル系単量体(a-1)が、炭素数1~4のアルキル基を有するアルキルメタクリレートである、請求項1に記載のフィルム。
- 前記紫外線吸収性単量体(a-2)がベンゾトリアゾール系単量体、ベンゾフェノン系単量体、及びトリアジン系単量体から選択される一種以上の単量体である、請求項1に記載のフィルム。
- 前記紫外線吸収性単量体(a-2)がベンゾトリアゾール系単量体である、請求項1に記載のフィルム。
- 請求項1~10のいずれか一項に記載のフィルムの上に、熱可塑性樹脂層が積層されている、積層フィルム。
- 基材の上に、請求項11に記載の積層フィルムが積層されている、積層体。
- 車両内外装部品、建築用内外装部品、及び太陽電池部品を保護するためのフィルムへの、請求項1~10のいずれか1項に記載のフィルムの使用。
- 車両内外装部品、建築用内外装部品、及び太陽電池部品を保護するためのフィルムへの、請求項11に記載の積層フィルムの使用。
- 車両内外装部品、建築用内外装部品、及び太陽電池部品を保護するためのフィルムへの、請求項12に記載の積層体の使用。
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CN201480055764.9A CN105612210A (zh) | 2013-08-14 | 2014-08-12 | 含有偏氟乙烯系树脂的膜和层叠膜、以及层叠体 |
US14/911,330 US20160200884A1 (en) | 2013-08-14 | 2014-08-12 | Film comprising vinylidene fluoride resin, laminated film, and laminate |
JP2014542613A JP6337776B2 (ja) | 2013-08-14 | 2014-08-12 | フッ化ビニリデン系樹脂を含むフィルム、及び積層フィルム、並びに積層体 |
EP14836277.5A EP3034556A4 (en) | 2013-08-14 | 2014-08-12 | FILM COMPRISING A VINYLIDENE FLUORIDE RESIN, LAMINATED FILM, AND LAMINATE |
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JPWO2017043565A1 (ja) * | 2015-09-11 | 2017-09-07 | 三菱ケミカル株式会社 | フッ化ビニリデン系樹脂を含む樹脂組成物、成形体、及びフィルム |
KR102008473B1 (ko) | 2016-05-30 | 2019-08-07 | 스미또모 가가꾸 가부시키가이샤 | 수지 적층체, 표시 장치 및 편광판 |
KR20190006027A (ko) * | 2016-05-30 | 2019-01-16 | 스미또모 가가꾸 가부시키가이샤 | 수지 적층체, 표시 장치 및 편광판 |
KR20190006192A (ko) * | 2016-05-30 | 2019-01-17 | 스미또모 가가꾸 가부시키가이샤 | 보호 필름을 구비하는 수지 적층체 |
KR20190007071A (ko) * | 2016-05-30 | 2019-01-21 | 스미또모 가가꾸 가부시키가이샤 | 수지 적층체, 표시 장치 및 편광판 |
KR102008477B1 (ko) * | 2016-05-30 | 2019-08-07 | 스미또모 가가꾸 가부시키가이샤 | 수지 적층체, 표시 장치 및 편광판 |
KR102008476B1 (ko) * | 2016-05-30 | 2019-08-08 | 스미또모 가가꾸 가부시키가이샤 | 보호 필름을 구비하는 수지 적층체 |
KR20190006028A (ko) * | 2016-05-31 | 2019-01-16 | 스미또모 가가꾸 가부시키가이샤 | 투명 점착제를 구비하는 수지 적층체 및 그것을 포함하는 표시 장치 |
KR102008479B1 (ko) * | 2016-05-31 | 2019-08-07 | 스미또모 가가꾸 가부시키가이샤 | 투명 점착제를 구비하는 수지 적층체 및 그것을 포함하는 표시 장치 |
JP2017226099A (ja) * | 2016-06-21 | 2017-12-28 | 三菱ケミカル株式会社 | 積層フィルム |
WO2018070313A1 (ja) * | 2016-10-12 | 2018-04-19 | 住友化学株式会社 | 樹脂積層体及びその製造方法 |
JP2018062111A (ja) * | 2016-10-12 | 2018-04-19 | 住友化学株式会社 | 樹脂積層体及びその製造方法 |
WO2020116450A1 (ja) * | 2018-12-05 | 2020-06-11 | 富士フイルム株式会社 | 落下防止透明シート、及び落下防止透明シートの製造方法 |
JPWO2020116450A1 (ja) * | 2018-12-05 | 2021-10-14 | 富士フイルム株式会社 | 落下防止透明シート、及び落下防止透明シートの製造方法 |
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CN105612210A (zh) | 2016-05-25 |
EP3034556A4 (en) | 2016-08-17 |
US20160200884A1 (en) | 2016-07-14 |
JPWO2015022957A1 (ja) | 2017-03-02 |
JP6337776B2 (ja) | 2018-06-06 |
EP3034556A1 (en) | 2016-06-22 |
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