WO2012153733A1 - アクリル樹脂組成物、アクリル樹脂シート、アクリル樹脂積層体、及びそれらの製造方法 - Google Patents
アクリル樹脂組成物、アクリル樹脂シート、アクリル樹脂積層体、及びそれらの製造方法 Download PDFInfo
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- WO2012153733A1 WO2012153733A1 PCT/JP2012/061756 JP2012061756W WO2012153733A1 WO 2012153733 A1 WO2012153733 A1 WO 2012153733A1 JP 2012061756 W JP2012061756 W JP 2012061756W WO 2012153733 A1 WO2012153733 A1 WO 2012153733A1
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14008—Inserting articles into the mould
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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
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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- 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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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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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- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
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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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
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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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
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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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
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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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0869—Acids or derivatives thereof
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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
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
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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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
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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
- C08J2333/06—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 only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2333/10—Homopolymers or copolymers of methacrylic acid esters
- C08J2333/12—Homopolymers or copolymers of methyl methacrylate
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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
- C08J2433/00—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
- C08J2433/04—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
- C08J2433/06—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 only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
- C08J2433/12—Homopolymers or copolymers of methyl methacrylate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31935—Ester, halide or nitrile of addition polymer
Definitions
- the present invention relates to an acrylic resin composition, an acrylic resin sheet, an acrylic resin laminate, and a method for producing them.
- acrylic resin Since acrylic resin is excellent in transparency, it is used for the front plates of various displays such as CRTs and liquid crystal televisions, and is also widely used as industrial materials and building materials. However, the impact strength of acrylic resin is not always sufficient.
- the present invention has been made to solve the above problems. That is, the objective of this invention is providing the acrylic resin composition excellent in transparency and impact resistance, an acrylic resin sheet, an acrylic resin laminated body, and these manufacturing methods.
- An acrylic resin composition containing 100 parts by mass of an acrylic polymer (A) having a methyl methacrylate unit and 0.002 to 0.7 parts by mass of an olefin- (meth) alkyl acrylate copolymer (B).
- Acrylic polymer (A-1) in which acrylic polymer (A) having methyl methacrylate units contains 50 to 100% by mass of methyl methacrylate units and 0 to 50% by mass of other vinyl monomer units The acrylic resin composition according to the above [1].
- the other vinyl monomer unit is a (meth) acrylic acid ester unit having an alicyclic hydrocarbon group having 6 to 20 carbon atoms, a linear or branched hydrocarbon group having 3 to 10 carbon atoms.
- the other vinyl monomer unit is a (meth) acrylic acid ester unit having an alicyclic hydrocarbon group having 6 to 20 carbon atoms, a linear or branched hydrocarbon group having 3 to 10 carbon atoms.
- the content of the ethylene-alkyl acrylate copolymer (B-2) is 0.02 to 0.5 parts by mass with respect to 100 parts by mass of the acrylic polymer (A-1). Acrylic resin composition.
- the content of the alkyl acrylate unit in the ethylene-alkyl acrylate copolymer (B-2) is 15 to 40% by mass, according to any one of [4], [6] and [7] Acrylic resin composition.
- An acrylic resin sheet comprising the acrylic resin composition according to any one of [1], [2], [3], [4], [6] and [7], wherein an acrylic polymer ( A) or an acrylic polymer (A-1) containing an olefin- (meth) alkyl acrylate copolymer (B), an ethylene- (meth) alkyl acrylate copolymer (B-1) or an ethylene-alkyl acrylate
- An acrylic resin sheet comprising the acrylic resin composition according to [5], wherein the acrylic polymer (A-1) contains an olefin- (meth) alkyl acrylate copolymer (B) or ethylene- An acrylic resin sheet in which the (meth) alkyl acrylate copolymer (B-1) is dispersed.
- An acrylic resin sheet comprising the acrylic resin composition according to [8], wherein the ethylene-alkyl acrylate copolymer (B-2) is dispersed in the acrylic polymer (A-1). Acrylic resin sheet.
- the haze value based on JIS K 7136 is 0.5% or less, and the 50% impact fracture height based on JIS K 7211 is 350 mm or more and the plate thickness is 2 mm or less in the falling ball test under the following conditions.
- test piece Place the test piece on the support base so that the center of the hole on the support base matches the center of the test piece, and fix the left and right sides of the test piece to the support base with cellophane tape.
- a stainless steel ball is dropped to the center of the specimen under the% condition.
- the drop height is changed in units of 25 mm, and the number of tests at each drop height is 20.
- An acrylic resin sheet comprising the acrylic resin composition according to any one of [1], [2], [3], [4], [6] and [7], wherein an acrylic polymer ( A) or an acrylic polymer (A-1) containing an olefin- (meth) alkyl acrylate copolymer (B), an ethylene- (meth) alkyl acrylate copolymer (B-1) or an ethylene-alkyl acrylate
- the acrylic resin sheet as described in [12] above, wherein the copolymer (B-2) is dispersed.
- An acrylic resin sheet comprising the acrylic resin composition according to [5], wherein the acrylic polymer (A-1) contains an olefin- (meth) alkyl acrylate copolymer (B) or ethylene-
- the acrylic resin sheet as described in [12] above, wherein the (meth) alkyl acrylate copolymer (B-1) is dispersed.
- a polymerizable raw material As a polymerizable raw material, a monomer component (a) containing methyl methacrylate or a monomer mixture having methyl methacrylate and another vinyl monomer, and an ethylene-alkyl acrylate copolymer (B- 2) or a syrup (1) obtained by polymerizing a part of the monomer component (a) and an ethylene-alkyl acrylate copolymer (B-2). ), And the polymerizable raw material is placed in a mold formed by two plate-like bodies arranged opposite to each other at a predetermined interval and a sealing material arranged at an edge thereof. Injection, polymerized and cured to produce a sheet-like polymer, and the sheet-like polymer is peeled off from the mold according to any one of [10] to [13] and [15] to [18] A method for producing an acrylic resin sheet.
- the method for producing an acrylic resin sheet according to [9] wherein the method is injected and polymerized to form a sheet polymer, and the sheet polymer is peeled from the mold.
- a polymerizable raw material As a polymerizable raw material, a monomer component (a) containing methyl methacrylate or a monomer mixture having methyl methacrylate and another vinyl monomer, and an ethylene-alkyl acrylate copolymer (B- 2) or a syrup (1) obtained by polymerizing a part of the monomer component (a) and an ethylene-alkyl acrylate copolymer (B-2). ), And the polymerizable raw material is placed in a mold formed by two plate-like bodies arranged opposite to each other at a predetermined interval and a sealing material arranged at an edge thereof.
- the method for producing an acrylic resin sheet according to [14] wherein the method is injected and polymerized and cured to produce a sheet-like polymer, and the sheet-like polymer is peeled from the mold.
- a polymerizable raw material As a polymerizable raw material, a monomer component (a) containing methyl methacrylate or a monomer mixture having methyl methacrylate and another vinyl monomer, and an ethylene-alkyl acrylate copolymer (B- 2) using a raw material composition (3) containing syrup (2) obtained by polymerizing a part of the mixture, and two plate-like bodies arranged opposite to each other at a predetermined interval and the edges thereof
- the polymerizable raw material is injected into a mold formed by the sealing material arranged and polymerized and cured to produce a sheet-like polymer, and the sheet-like polymer is peeled from the mold. [10] to [10] 13] and the method for producing an acrylic resin sheet according to any one of [15] to [18].
- a polymerizable raw material As a polymerizable raw material, a monomer component (a) containing methyl methacrylate or a monomer mixture having methyl methacrylate and another vinyl monomer, and an ethylene-alkyl acrylate copolymer (B- 2) using a raw material composition (3) containing syrup (2) obtained by polymerizing a part of the mixture, and two plate-like bodies arranged opposite to each other at a predetermined interval and the edges thereof
- the polymerizable raw material is injected into the mold formed by the sealing material arranged and polymerized and cured to produce a sheet polymer, and the sheet polymer is peeled from the mold.
- the manufacturing method of the acrylic resin sheet of description The manufacturing method of the acrylic resin sheet of description.
- a polymerizable raw material As a polymerizable raw material, a monomer component (a) containing methyl methacrylate or a monomer mixture having methyl methacrylate and another vinyl monomer, and an ethylene-alkyl acrylate copolymer (B- 2) using a raw material composition (3) containing syrup (2) obtained by polymerizing a part of the mixture, and two plate-like bodies arranged opposite to each other at a predetermined interval and the edges thereof
- the polymerizable raw material is injected into the mold formed by the sealing material disposed and polymerized and cured to produce a sheet-like polymer, and the sheet-like polymer is peeled from the mold.
- the manufacturing method of the acrylic resin sheet of description The manufacturing method of the acrylic resin sheet of description.
- Acrylic polymer (A-1) having 50 to 100% by weight of methyl methacrylate units and 0 to 50% by weight of other vinyl monomer units, and an olefin- (meth) acrylate alkyl copolymer (B) An acrylic resin laminate in which a cured layer is laminated on at least one surface of an acrylic resin sheet obtained by using an acrylic resin composition containing.
- the other vinyl monomer unit is a (meth) acrylic acid ester unit having an alicyclic hydrocarbon group having 6 to 20 carbon atoms, a linear or branched hydrocarbon group having 3 to 10 carbon atoms.
- the acrylic resin laminate according to [25] which is at least one selected from a (meth) acrylic acid ester unit having and a monomer unit having two or more ethylenically unsaturated bonds in the molecule.
- the ethylene-alkyl acrylate copolymer (B-2) content is 0.002 to 0.7 parts by mass with respect to 100 parts by mass of the acrylic polymer (A-1) in the acrylic resin composition.
- the ethylene-alkyl acrylate copolymer (B-2) content is 0.002 to 0.7 parts by mass with respect to 100 parts by mass of the acrylic polymer (A-1) in the acrylic resin composition.
- the ethylene-alkyl acrylate copolymer (B-2) content is 0.01 to 0.1 parts by mass with respect to 100 parts by mass of the acrylic polymer (A-1) in the acrylic resin composition.
- a mold it is formed by two plate-like bodies arranged opposite to each other at a predetermined interval and a sealing material arranged at the edge thereof, and is cured on the inner surface of the mold of at least one plate-like body Using a mold with a layer formed,
- a monomer component (a) containing methyl methacrylate or a monomer mixture having methyl methacrylate and other vinyl monomers an ethylene-alkyl acrylate copolymer (B-2), Or a syrup (1) obtained by polymerizing a part of the monomer component (a) and an ethylene-alkyl acrylate copolymer (B-2).
- Step 1 A step of injecting the polymerizable raw material into the mold and polymerizing and curing to produce a sheet-like polymer, and transferring the cured layer to the sheet-like polymer to produce a laminate.
- Step 2 A step of peeling the laminate from the mold.
- a mold formed by two plate-like bodies arranged opposite to each other at a predetermined interval and a sealing material arranged at the edge thereof, and cured on the inner surface of the mold of at least one plate-like body Using a mold with a layer formed,
- a monomer component (a) containing methyl methacrylate or a monomer mixture having methyl methacrylate and other vinyl monomers an ethylene-alkyl acrylate copolymer (B-2), Or a syrup (1) obtained by polymerizing a part of the monomer component (a) and an ethylene-alkyl acrylate copolymer (B-2).
- Step 1 A step of injecting the polymerizable raw material into the mold and polymerizing and curing to produce a sheet-like polymer, and transferring the cured layer to the sheet-like polymer to produce a laminate.
- Step 2 A step of peeling the laminate from the mold.
- a mold use a mold formed by two plate-like bodies arranged to face each other at a predetermined interval and a sealing material arranged at an edge thereof, As a polymerizable raw material, a monomer component (a) containing methyl methacrylate or a monomer mixture having methyl methacrylate and other vinyl monomers, an ethylene-alkyl acrylate copolymer (B-2), Or a syrup (1) obtained by polymerizing a part of the monomer component (a) and an ethylene-alkyl acrylate copolymer (B-2).
- Step 1 A step of injecting the polymerizable raw material into the mold and polymerizing and curing it to produce a sheet-like polymer, and peeling the sheet-like polymer from the mold to obtain an acrylic resin sheet.
- Step 2 A step of applying a curable composition on at least one surface of the acrylic resin sheet and curing to form a cured layer to form a laminate.
- a mold use a mold formed by two plate-like bodies arranged to face each other at a predetermined interval and a sealing material arranged at an edge thereof, As a polymerizable raw material, a monomer component (a) containing methyl methacrylate or a monomer mixture having methyl methacrylate and other vinyl monomers, an ethylene-alkyl acrylate copolymer (B-2), Or a syrup (1) obtained by polymerizing a part of the monomer component (a) and an ethylene-alkyl acrylate copolymer (B-2).
- a monomer component (a) containing methyl methacrylate or a monomer mixture having methyl methacrylate and other vinyl monomers an ethylene-alkyl acrylate copolymer (B-2)
- a syrup (1) obtained by polymerizing a part of the monomer component (a) and an ethylene-alkyl acrylate copolymer (B-2).
- Step 1 A step of injecting the polymerizable raw material into the mold and polymerizing and curing it to produce a sheet-like polymer, and peeling the sheet-like polymer from the mold to obtain an acrylic resin sheet.
- Step 2 A step of applying a curable composition on at least one surface of the acrylic resin sheet and curing to form a cured layer to form a laminate.
- a mold formed by two plate-like bodies arranged opposite to each other at a predetermined interval and a sealing material arranged at the edge thereof, and cured on the inner surface of the mold of at least one plate-like body Using a mold with a layer formed, As a polymerizable raw material, a monomer component (a) containing methyl methacrylate or a monomer mixture having methyl methacrylate and other vinyl monomers, an ethylene-alkyl acrylate copolymer (B-2), Using a raw material composition (3) comprising syrup (2) obtained by polymerizing a part of the mixture containing The manufacturing method of the acrylic resin laminated body in any one of said [27], [31], [33] and [35] including the following process 1 and process 2.
- Step 1 A step of injecting the polymerizable raw material into the mold and polymerizing and curing to produce a sheet-like polymer, and transferring the cured layer to the sheet-like polymer to produce a laminate.
- Step 2 A step of peeling the laminate from the mold.
- a mold formed by two plate-like bodies arranged opposite to each other at a predetermined interval and a sealing material arranged at the edge thereof, and cured on the inner surface of the mold of at least one plate-like body Using a mold with a layer formed, As a polymerizable raw material, a monomer component (a) containing methyl methacrylate or a monomer mixture having methyl methacrylate and other vinyl monomers, an ethylene-alkyl acrylate copolymer (B-2), Using a raw material composition (3) comprising syrup (2) obtained by polymerizing a part of the mixture containing The manufacturing method of the acrylic resin laminated body as described in said [34] including the following process 1 and process 2.
- Step 1 A step of injecting the polymerizable raw material into the mold and polymerizing and curing to produce a sheet-like polymer, and transferring the cured layer to the sheet-like polymer to produce a laminate.
- Step 2 A step of peeling the laminate from the mold.
- a mold use a mold formed by two plate-like bodies arranged to face each other at a predetermined interval and a sealing material arranged at an edge thereof, As a polymerizable raw material, a monomer component (a) containing methyl methacrylate or a monomer mixture having methyl methacrylate and other vinyl monomers, an ethylene-alkyl acrylate copolymer (B-2), Using a raw material composition (3) comprising syrup (2) obtained by polymerizing a part of the mixture containing The manufacturing method of the acrylic resin laminated body in any one of said [27], [31], [33] and [35] including the following process 1 and process 2.
- Step 1 A step of injecting the polymerizable raw material into the mold and polymerizing and curing it to produce a sheet-like polymer, and peeling the sheet-like polymer from the mold to obtain an acrylic resin sheet.
- Step 2 A step of applying a curable composition on at least one surface of the acrylic resin sheet and curing to form a cured layer to form a laminate.
- a mold use a mold formed by two plate-like bodies arranged to face each other at a predetermined interval and a sealing material arranged at an edge thereof,
- a raw material composition (3) comprising syrup (2) obtained by polymerizing a part of the mixture containing
- the manufacturing method of the acrylic resin laminated body as described in said [34] including the following process 1 and process 2.
- Step 1 A step of injecting the polymerizable raw material into the mold and polymerizing and curing it to produce a sheet-like polymer, and peeling the sheet-like polymer from the mold to obtain an acrylic resin sheet.
- Step 2 A step of applying a curable composition on at least one surface of the acrylic resin sheet and curing to form a cured layer to form a laminate.
- an acrylic resin sheet and an acrylic resin laminate excellent in transparency and impact resistance can be obtained. Furthermore, the acrylic resin sheet and the acrylic resin laminate obtained in the present invention are suitable for optical applications such as a display front plate.
- (meth) acrylate means acrylate or methacrylate
- (meth) acryl means acryl or methacryl
- (meth) acryloyloxy means acryloyloxy or methacryloyl. Means oxy.
- the acrylic resin composition of the present invention contains 100 parts by mass of an acrylic polymer (A) having methyl methacrylate units and 0.002 to 0.7 parts by mass of an olefin- (meth) alkyl acrylate copolymer (B).
- Acrylic resin composition hereinafter, the methyl methacrylate and the methyl methacrylate unit may be abbreviated as “MMA” and “MMA unit”, respectively.
- the acrylic polymer (A) of the present invention is a homopolymer consisting of methyl methacrylate units, or methyl methacrylate units and “other vinyl monomer units” (that is, vinyl monomer units excluding MMA units). It is a copolymer consisting of.
- the acrylic polymer (A) contains 50 to 100% by mass of methyl methacrylate units and “other vinyl monomers” from the viewpoint of impact resistance, transparency, mechanical strength, weather resistance, moldability, etc. of the acrylic resin sheet.
- An acrylic polymer (A-1) containing 0 to 50% by mass of units is preferable.
- other vinyl monomers used as raw materials for “other vinyl monomer units” include the following monomers.
- An epoxy group-containing monomer such as glycidyl acrylate (meth) acrylate; an aromatic compound having an ethylenically unsaturated bond in the molecule such as styrene or ⁇ -methylstyrene.
- the following monomers can also be used.
- the “other vinyl monomer” is a (meth) acrylic acid ester having an alicyclic hydrocarbon group having 6 to 20 carbon atoms, or 3 to 3 carbon atoms. It is preferably at least one selected from (meth) acrylic acid esters having 10 linear or branched hydrocarbon groups and monomers having two or more ethylenically unsaturated bonds in the molecule.
- olefin- (meth) alkyl acrylate copolymer (B) examples include ethylene and propylene. , Isoprene, butadiene and the like.
- examples of the alkyl (meth) acrylate used as a raw material for the alkyl (meth) acrylate unit constituting the copolymer (B) include the following monomers.
- the copolymer (B) is preferably an ethylene- (meth) alkyl acrylate copolymer (B-1), and the ethylene-alkyl acrylate copolymer. (B-2) is more preferable, and an ethylene-methyl acrylate copolymer is particularly preferable.
- these copolymers may be copolymers with acid anhydrides such as maleic anhydride and itaconic anhydride. Further, these copolymers may be random copolymers or block copolymers.
- the blending amount of the copolymer (B) in the acrylic resin composition of the present invention is 0.002 to 0.7 parts by mass with respect to 100 parts by mass of the acrylic polymer (A). If the amount of the copolymer (B) is 0.002 parts by mass or more, the impact resistance of the acrylic resin sheet is improved, and if it is 0.7 parts by mass or less, the transparency of the acrylic resin sheet is high. It is good.
- the blending amount of the copolymer (B) with respect to 100 parts by mass of the acrylic polymer (A) is preferably 0.02 to 0.5 parts by mass.
- the copolymer (B) preferably contains 15 to 40% by mass of alkyl acrylate units based on 100% by mass of all monomer units. When 15 mass% or more of alkyl acrylate units are contained, the copolymer (B) has good solubility in MMA, and the acrylic resin sheet is excellent in transparency. Further, when the alkyl acrylate unit is contained in an amount of 40% by mass or less, the acrylic resin sheet is excellent in transparency and impact resistance.
- Examples of the form of the acrylic resin composition of the present invention include a powdery material and a pellety material.
- MMA or a monomer component (a) containing a monomer mixture containing MMA and “another vinyl monomer” is ethylene-acrylic acid.
- a method of polymerizing in the presence of the alkyl copolymer (B-2) is preferable from the viewpoint of impact properties and transparency of the acrylic resin sheet.
- the polymerization method include bulk polymerization, solution polymerization, emulsion polymerization, and suspension polymerization. From the viewpoint of the production cost of the acrylic resin composition, the environmental burden due to the use of a solvent, the productivity of the acrylic resin composition, and transparency. Bulk polymerization is preferred.
- MMA dispersed in water is polymerized using a dispersion stabilizer, and then washed and dehydrated and vacuum dried. Examples thereof include a method for obtaining a powdery material.
- a method for producing a pellet-like product for example, a method for obtaining pellets by extruding the powder-like product obtained by the above method or a method described in JP-A-2000-26507, MMA And a method of obtaining pellets by bulk polymerization in a reactor and extruding while separating and removing unreacted MMA.
- the radical polymerization initiator added to the monomer component (a) is not particularly limited, and examples thereof include the following. 2,2′-azobis (4-methoxy-2,4-dimethylvaleronitrile), 2,2′-azobisisobutyronitrile, 2,2′-azobis- (2,4-dimethylvaleronitrile), etc.
- Azo-based polymerization initiator lauroyl peroxide, diisopropyl peroxydicarbonate, benzoyl peroxide, bis (4-t-butylcyclohexyl) peroxydicarbonate, t-butylperoxyneodecanoate, t-hexylperoxypi Organic peroxide polymerization initiators such as valates. These can be used alone or in combination of two or more.
- the addition amount of the radical polymerization initiator is preferably 0.01 to 1 part by mass with respect to 100 parts by mass of the total amount of monomers.
- the polymerization temperature is not particularly limited, but is preferably 40 ° C or higher, more preferably 50 ° C or higher. Moreover, 180 degrees C or less is preferable and 150 degrees C or less is more preferable.
- the polymerization time is appropriately determined according to the progress of polymerization curing.
- additives such as chain transfer agents for adjusting molecular weight, stabilizers such as antioxidants and UV absorbers, flame retardants, dyes, pigments, mold release agents, etc. Can also be added.
- acrylic resin sheet examples include a resin sheet containing the acrylic resin composition.
- the acrylic resin sheet of the present invention has a haze value based on JIS K 7136 of 0.5% or less, and a 50% impact fracture height based on JIS K 7211 is 350 mm or more in a falling ball test under the following conditions.
- An acrylic resin sheet having a plate thickness of 2 mm or less is exemplified.
- the falling ball test is performed by the method described below, and the height at which 50% of the test piece breaks is calculated using the 50% fracture height calculation method described in JIS K 7211.
- ⁇ Falling ball test method> Specimen size: square with a side of 50 mm, Support base size: 5 mm thick acrylic plate with a circular hole with a diameter of 20 mm, Falling ball size: stainless steel ball (ball diameter 20.0 mm ⁇ , mass 35.9 g), Temperature of measurement atmosphere: 23 ° C Relative humidity of the measurement atmosphere; 50% The standing time in the measurement atmosphere of the test piece before the measurement; 24 hours or more. Test method: follow the test procedure described in JIS K 7211-1.
- test piece Place the test piece on the support base so that the center of the hole of the support base matches the center of the test piece, and fix the left and right sides of the test piece to the support base with cellophane tape, temperature 23 ° C, relative humidity 50
- a stainless steel ball is dropped to the center of the specimen under the% condition.
- the drop height is changed in units of 25 mm, and the number of tests at each drop height is 20.
- the acrylic resin sheet of the present invention is suitable for optical uses such as a display front plate.
- a haze value of 2% or less is preferable from the viewpoint of display visibility, and 0.5% or less is more preferable.
- the 50% fracture height is preferably 200 mm or more, and more preferably 350 mm or more.
- an acrylic resin sheet having a haze value of 0.5% or less for example, an elastomer containing an alkyl acrylate unit is dispersed in an acrylic resin matrix.
- an acrylic resin sheet having a thickness of 350 mm or more and a thickness of 2 mm or less examples thereof include an acrylic resin sheet having a thickness of 350 mm or more and a thickness of 2 mm or less.
- the acrylic resin sheet having a haze value of 0.5% or less include 100 parts by mass of an acrylic polymer (A-1) and an olefin- (meth) acrylate alkyl copolymer such as ethylene-methyl acrylate (B )
- An acrylic resin sheet having a thickness of 0.5 mm or less and a 50% impact fracture height of 350 mm or more and a thickness of 2 mm or less can be mentioned.
- the copolymer (B) as a constituent component thereof is preferably an ethylene- (meth) alkyl acrylate copolymer (B-1), An ethylene-alkyl acrylate copolymer (B-2) is more preferred, and an ethylene-methyl acrylate copolymer is particularly preferred.
- these copolymers may be copolymers with acid anhydrides such as maleic anhydride and itaconic anhydride. Further, these copolymers may be random copolymers or block copolymers.
- the blending amount of the copolymer (B) in the acrylic resin sheet of the present invention is preferably 0.002 to 0.7 parts by mass with respect to 100 parts by mass of the acrylic polymer (A). If the amount of the copolymer (B) is 0.002 parts by mass or more, the impact resistance of the acrylic resin sheet is improved, and if it is 0.7 parts by mass or less, the transparency of the acrylic resin sheet is high. It is good.
- the blending amount of the copolymer (B) is more preferably 0.02 to 0.5 parts by mass.
- the “other vinyl monomer unit” in the acrylic polymer (A) has an alicyclic hydrocarbon group having 6 to 20 carbon atoms (meta )
- the degree of deformation of the acrylic resin sheet due to moisture absorption can be represented by a moisture absorption displacement amount y.
- the moisture absorption displacement amount y is measured by the method described below. First, using a fixing jig, a sheet test piece having a length of 200 mm and a width of 50 mm is fixed at one end (length: 50 mm) in a horizontal state, and in this state, an environment having a temperature of 85 ° C. and a relative humidity of 85%. Hold down for 24 hours (see FIG. 1). Next, the amount of deflection (amount of hygroscopic displacement) y in the vertical direction of the other end of the sheet test piece that is not fixed is measured.
- the moisture absorption displacement amount of the acrylic resin sheet of the present invention is preferably 45 mm or less. If the amount of hygroscopic displacement is less than this value, the shape of the front plate can be maintained for a long time under high temperature and high humidity when the acrylic resin sheet is used for optical applications such as a display front plate.
- the method for producing the acrylic resin sheet of the present invention is not particularly limited, and examples thereof include a casting polymerization method, an extrusion molding method, and an injection molding method. However, since a transparent resin sheet is obtained, the casting polymerization method is used. Is preferred.
- the casting polymerization method uses a mold formed by two plate-like bodies arranged opposite to each other at a predetermined interval and a sealing material arranged at the edge thereof, and injects a polymerizable raw material into the mold to perform polymerization.
- a sheet-like polymer is produced by curing, and the sheet-like polymer is peeled off from the mold.
- Such a casting polymerization method is a particularly preferable method in applications requiring transparency such as optical applications.
- the casting polymerization mold is not particularly limited, and a known mold can be used.
- Examples of the mold for obtaining the plate-like resin molded product include a cell casting mold and a continuous casting mold.
- the mold for cell casting is, for example, two plate-like bodies such as inorganic glass, chrome-plated metal plate, stainless steel plate, etc. are arranged to face each other at a predetermined interval, and a gasket is arranged on the edge thereof. Thus, a sealed space is formed.
- the casting mold for continuous casting has a configuration in which a sealed space is formed by opposing surfaces of a pair of endless belts that run in the same direction at the same speed and gaskets that run at the same speed as the endless belt on both sides.
- Examples of the polymerizable raw material injected into the mold include the following raw material composition (1), raw material composition (2), or raw material composition (3).
- the raw material composition (1) comprises a monomer component (a) containing MMA or a monomer mixture containing MMA and “other vinyl monomer”, and an ethylene-alkyl acrylate copolymer (B-2). And a composition comprising:
- the raw material composition (2) comprises MMA or MMA and syrup (1) obtained by polymerizing a part of the monomer component (a) containing a monomer mixture having “other vinyl monomer”. And an ethylene-alkyl acrylate copolymer (B-2).
- This raw material composition (2) is obtained by adding an ethylene-alkyl acrylate copolymer (B-2) to a syrup (1) obtained by polymerizing a part of the monomer component (a).
- Raw material composition (3) is a composition containing syrup (2) obtained by polymerizing a part of the raw material composition (1).
- this raw material composition (3) after the ethylene-alkyl acrylate copolymer (B-2) is added and dissolved in the monomer component (a), a part of the monomer component (a) is added. It can be prepared by polymerization.
- the syrup (1) and syrup (2) used in the present invention are a mixture of a monomer and a polymer and are viscous liquids.
- the polymerization rate is preferably in the range of 5 to 45% by mass.
- the polymerization rate is 5% by mass or more, the polymerization curing time at the time of cast polymerization is shortened, and appearance defects tend not to occur in the acrylic resin sheet.
- the polymerization rate is 45% by mass or less, the viscosity of the syrup is moderate, and the handling property of the syrup tends to be good.
- the polymerization rate of the syrup is preferably as high as possible.
- the polymerization rate of syrup is preferably as low as possible. From these viewpoints, the polymerization rate of syrup is particularly preferably in the range of 10 to 40% by mass.
- a method for adjusting the polymerization rate of the polymerizable raw material within the range of 5 to 45% by mass is not particularly limited, but the monomer component is usually contained in a reactor equipped with a cooling pipe, a thermometer and a stirrer. A predetermined amount of the composition containing (a) or the monomer component (a) and the copolymer (B-2) is weighed in, heated with stirring, a polymerization initiator is added, and the composition is heated to a predetermined temperature. Examples of the method include cooling after maintaining and allowing the polymerization to proceed.
- the polymerization inhibitor include hydroquinone, hydroquinone monomethyl ether, 2,6-di-t-butyl-4-methylphenol, and 2,4-dimethyl-6-t-butylphenol. These may be used alone or in combination of two or more as required.
- radical polymerization As the polymerization reaction mode of the casting polymerization, a known reaction mode such as radical polymerization or anionic polymerization can be employed.
- radical polymerization is preferable from the viewpoint of versatility of raw materials, easy management of production conditions, and simple production with general-purpose equipment.
- radical polymerization initiator When employing radical polymerization, the above-mentioned radical polymerization initiator and various additives can be added to the polymerizable raw material.
- the addition amount of the radical polymerization initiator is preferably 0.01 to 1 part by mass with respect to 100 parts by mass of the total amount of monomers.
- the polymerization temperature is not particularly limited, but is preferably 40 ° C or higher, more preferably 50 ° C or higher. Moreover, 180 degrees C or less is preferable and 150 degrees C or less is more preferable.
- the polymerization time is appropriately determined according to the progress of polymerization curing.
- the type of polymerizable raw material injected into the mold it is preferable to select the type of polymerizable raw material injected into the mold according to the characteristics required for the acrylic resin sheet. From the viewpoint of improving the impact resistance and transparency of the acrylic resin sheet, the raw material composition (1) is most preferable, and then the raw material composition (3) is preferable. Moreover, from the viewpoint of improving the productivity of the acrylic resin sheet, the raw material composition (3) is most preferable, and then the raw material composition (2) is preferable.
- acrylic resin laminate As the acrylic resin sheet used to obtain the acrylic resin laminate of the present invention, MMA alone or an acrylic polymer (A) having MMA and other vinyl monomer units, and olefin (meth) acrylic acid
- the acrylic resin laminate of the present invention is a laminate in which a cured layer is laminated on at least one surface of the acrylic resin sheet.
- This hardened layer can have various functions such as scratch resistance, antireflection, antiglare, antifouling, antistatic, antiscattering, adhesiveness, adhesiveness, softness, etc. This hardened layer can have at least one of these functions.
- a curable composition used as a raw material of the cured layer a curable composition containing a radical polymerization curable compound such as an ultraviolet curable composition described later, or a condensation polymerization system such as alkoxysilane and alkylalkoxysilane.
- a curable composition containing any of the curable compounds can be used.
- a curable composition is hardened
- each curable compound may be used individually by 1 type, and may be used in combination of 2 or more types. In some cases, an active energy ray polymerization curable compound and a thermal polymerization curable compound may be combined.
- the curable composition is preferably an ultraviolet curable composition from the viewpoint of productivity and physical properties of the acrylic resin laminate.
- the cured layer is preferably a layer obtained by curing an ultraviolet curable composition with ultraviolet rays.
- an ultraviolet curable composition it is preferable from the viewpoint of the productivity of an acrylic resin laminated body to use the composition which consists of a compound which has at least 2 (meth) acryloyloxy group in a molecule
- Examples of the compound having at least two (meth) acryloyloxy groups in the molecule include the following compounds.
- esterified product obtained from 1 mol of polyhydric alcohol and 2 mol or more of (meth) acrylic acid or a derivative thereof include the following compounds.
- Di (meth) acrylates of polyethylene glycols such as diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, and tetraethylene glycol di (meth) acrylate; 1,4-butanediol di (meth) acrylate, 1, Di (meth) acrylates of alkyl diols such as 6-hexanediol di (meth) acrylate and 1,9-nonanediol di (meth) acrylate; trimethylolpropane tri (meth) acrylate, trimethylolethane tri (meth) acrylate , Pentaglycerol tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (me
- Examples of combinations of a polyhydric alcohol, a polyvalent carboxylic acid or an anhydride thereof, and (meth) acrylic acid or a derivative thereof include the following combinations. Malonic acid / trimethylolethane / (meth) acrylic acid, malonic acid / trimethylolpropane / (meth) acrylic acid, malonic acid / glycerin / (meth) acrylic acid, malonic acid / pentaerythritol / (meth) acrylic acid, succinic acid Acid / trimethylolethane / (meth) acrylic acid, succinic acid / trimethylolpropane / (meth) acrylic acid, succinic acid / glycerin / (meth) acrylic acid, succinic acid / pentaerythritol / (meth) acrylic acid, adipic acid / Trimethylolethane / (meth) acrylic acid, adipic acid / trimethylolpropane / (me
- the compound having at least two (meth) acryloyloxy groups in the molecule include the following compounds. Trimerization of diisocyanates (for example, trimethylolpropane toluylene diisocyanate, hexamethylene diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate, xylene diisocyanate, 4,4'-methylenebis (cyclohexyl isocyanate), isophorone diisocyanate, trimethylhexamethylene diisocyanate, etc.
- diisocyanates for example, trimethylolpropane toluylene diisocyanate, hexamethylene diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate, xylene diisocyanate, 4,4'-methylenebis (cyclohexyl isocyanate), isophorone diisocyanate, trimethylhexamethylene diisocyanate
- Acrylic monomers having active hydrogen per mole of the resulting polyisocyanate for example, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxy-3-methoxypropyl (meth) acrylate, N -Methylol (meth) acrylamide, N-hydroxy (meth) acrylamide, 1,2,3-propanetrio 1,3-di (meth) acrylate, 3-acryloyloxy-2-hydroxypropyl (meth) acrylate, etc.) urethane (meth) acrylate obtained by reacting 3 mol or more; Tris (2-hydroxyethyl) Poly [(meth) acryloyloxyethylene] isocyanurates such as di (meth) acrylate or tri (meth) acrylate of isocyanuric acid; epoxy poly (meth) acrylate; and urethane poly (meth) acrylate.
- photoinitiator used in the ultraviolet curable composition include the following compounds. Benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, acetoin, butyroin, toluoin, benzyl, benzophenone, p-methoxybenzophenone, 2,2-diethoxyacetophenone, ⁇ , ⁇ -dimethoxy- ⁇ -phenyl Acetophenone, methylphenylglyoxylate, ethylphenylglyoxylate, 4,4'-bis (dimethylamino) benzophenone, 1-hydroxy-cyclohexyl-phenyl-ketone, and 2-hydroxy-2-methyl-1-phenylpropane- Carbonyl compounds such as 1-one; sulfur compounds such as tetramethylthiuram monosulfide and tetramethylthiuram disulfide; and 2,4,6-trifluoride
- acrylic resin composition constituting the acrylic resin sheet examples include acrylic polymers (A-1) having 50 to 100% by mass of MMA units and 0 to 50% by mass of “other vinyl monomer units” and olefin- (meta )
- An acrylic resin composition containing the alkyl acrylate copolymer (B) is preferred.
- the olefin- (meth) alkyl acrylate copolymer (B) is preferably an ethylene- (meth) alkyl acrylate copolymer (B-1), preferably an ethylene-alkyl acrylate copolymer (B-2). ) Is more preferable.
- the “other vinyl monomer unit” in the acrylic polymer (A-1) having an MMA unit is a (meth) acrylic acid ester unit having an alicyclic hydrocarbon group having 6 to 20 carbon atoms, having 3 carbon atoms. It is at least one selected from (meth) acrylic acid ester units having 10 to 10 linear or branched hydrocarbon groups and monomer units having two or more ethylenically unsaturated bonds in the molecule. Is preferred.
- the content of the ethylene-alkyl acrylate copolymer (B-2) with respect to 100 parts by mass of the acrylic polymer (A-1) in the acrylic resin composition is preferably 0.002 to 0.7 parts by mass. More preferably, the content is 0.01 to 0.1 parts by mass.
- the thickness of the cured layer is preferably 1 ⁇ m to 100 ⁇ m, more preferably 1 ⁇ m to 30 ⁇ m, from the viewpoint of the surface hardness and appearance of the acrylic resin laminate.
- the acrylic resin laminate of the present invention can have a functional layer other than the cured layer between the acrylic resin sheet and the cured layer, or on one or both surfaces of the cured layer.
- a functional layer other than the cured layer between the acrylic resin sheet and the cured layer, or on one or both surfaces of the cured layer.
- Specific examples of the function of the functional layer include antireflection properties, antiglare properties, antifouling properties, antistatic properties, antiscattering properties, tackiness, adhesiveness, softness, and the like.
- This functional layer has at least one or more of these functions, and the functional layer can be one or more.
- Transfer method is formed of two plate-like bodies arranged opposite to each other at a predetermined interval and a sealing material arranged at an edge thereof as a mold, and at least one of the plate-like bodies.
- This is a method including the following step 1 and step 2 using a mold in which a cured layer is formed on the inner surface of the mold.
- Step 1 A step of injecting the polymerizable raw material into the mold and polymerizing and curing to produce a sheet-like polymer, and transferring the cured layer to the sheet-like polymer to produce a laminate.
- Step 2 A step of peeling the laminate from the mold.
- the coating method uses, as a mold, a mold formed by two plate-like bodies arranged to face each other at a predetermined interval and a sealing material arranged at the edge thereof. It is a method including step 2.
- [Step 1] A step of injecting the polymerizable raw material into the mold and polymerizing and curing it to produce a sheet-like polymer, and peeling the sheet-like polymer from the mold to obtain an acrylic resin sheet.
- Step 2 A step of applying a curable composition on at least one surface of the acrylic resin sheet and curing to form a cured layer to form a laminate.
- the cured layer in the transfer method or coating method can be formed by curing the above-described curable composition or the like.
- the cured layer in the transfer method is more preferably a layer obtained by curing an ultraviolet curable composition with ultraviolet rays.
- the blending amount of the photoinitiator in 100% by mass of the ultraviolet curable composition is preferably 0.1% by mass or more from the viewpoint of curability by ultraviolet irradiation, and is preferably 10% by mass or less from the viewpoint of banding by ultraviolet rays. Two or more photoinitiators can be used in combination.
- the curable composition is preferably used as a paint containing the curable composition.
- Various components such as a leveling agent, a conductive substance, inorganic fine particles, and a light stabilizer (ultraviolet absorber, HALS, etc.) can be further added to the coating material as necessary.
- the total amount of these various additives in 100% by mass of the curable composition is preferably 10% by mass or less from the viewpoint of the transparency of the laminate.
- the transfer method of the present invention is the same as the production of an acrylic resin sheet by the casting polymerization method, except that a mold having a cured layer formed on the inner surface of at least one plate is used as the mold.
- an acrylic resin laminate is manufactured. That is, the above-described raw material composition (1), raw material composition (2), or raw material composition (3) is injected into the mold as a polymerizable raw material.
- the coating method of the present invention is adopted as a method for producing an acrylic resin laminate, it is preferable from the viewpoints of productivity, appearance, and transparency of the acrylic resin laminate. Moreover, when employ
- the transfer method of the present invention it is preferable to select the type of polymerizable raw material injected into the mold according to the characteristics required for the acrylic resin laminate.
- the raw material composition (3) is most preferable, and then the raw material composition (2) is preferable.
- the raw material composition (1) is most preferable, and then the raw material composition (3) is preferable.
- a raw material composition (2) and a raw material composition (3) are the most preferable, and then a raw material composition (1) is preferable.
- EMA 1% dispersion used in the examples is prepared by the following method. First, 99 parts of MMA is supplied into a reactor (flask) equipped with a condenser, a thermometer and a stirrer, and heating is started while stirring. Next, when the liquid temperature reaches 80 ° C., 1 part of EMA is added and stirred for 30 minutes, and then the liquid temperature is cooled to room temperature.
- Example 1 Two stainless steel (SUS304, length 300 mm, width 300 mm, thickness 300 mm) plates were made to face each other, and the edges thereof were sealed with a soft polyvinyl chloride gasket to produce a casting polymerization mold 1.
- Example 1 A polymerizable raw material containing 100 parts of MMA, 0.3 part of t-hexyl peroxypivalate, and 0.05 part of sodium dioctyl sulfosuccinate was prepared. Cast polymerization was performed in the same manner as in Example 1 except that this polymerizable raw material was used to obtain an acrylic resin sheet having a thickness of 1 mm. The evaluation results are shown in Table 4. Since this acrylic resin sheet did not use the copolymer (B), the 50% impact fracture height in the falling ball test was small, and the impact resistance was poor.
- Example 9 Contains syrup 1 (70 parts), MMA 29.5 parts, EMA 1% dispersion 0.5 parts, EDMA 0.03 parts, t-hexyl peroxypivalate 0.3 parts, and sodium dioctyl sulfosuccinate 0.05 parts A polymerizable raw material was prepared. Cast polymerization was performed in the same manner as in Example 1 except that this polymerizable raw material was used to obtain an acrylic resin sheet having a thickness of 1 mm. The evaluation results are shown in Table 5.
- Example 10 to 12 Except that the polymerizable raw material was changed as shown in Table 5, cast polymerization was performed in the same manner as in Example 9 to prepare an acrylic resin sheet having a plate thickness of 1 mm. The evaluation results are shown in Table 5.
- Example 13 A polymerizable raw material containing the syrup 2-1 (70 parts), MMA 30 parts, EDMA 0.03 parts, t-hexyl peroxypivalate 0.3 parts, and sodium dioctylsulfosuccinate 0.05 parts was prepared. Cast polymerization was performed in the same manner as in Example 1 except that this polymerizable raw material was used to obtain an acrylic resin sheet having a thickness of 1 mm. The evaluation results are shown in Table 6.
- Example 19 An ultraviolet curable composition containing TAS (50 parts), C6DA (50 parts) and BEE (2 parts) was applied onto a stainless steel plate (SUS304, length 300 mm, width 300 mm, thickness 300 mm).
- a polyethylene terephthalate film (PET film) with a thickness of 12 ⁇ m is layered, and an excessive UV curable composition is squeezed out using a rubber roll with a JIS hardness of 40 ° so that the coating film thickness becomes 15 ⁇ m. The film was pressed so that it did not contain bubbles.
- the thickness of the coating film was calculated from the supply amount of the ultraviolet curable composition and the developed area (530 cm 2 ).
- the position of 20 cm below the fluorescent UV lamp (product name: FL40BL, manufactured by Toshiba Lighting & Technology Co., Ltd.) with an output of 40 W is passed at a speed of 0.3 m / min.
- the coating film was irradiated with ultraviolet rays to polymerize and cure the ultraviolet curable composition.
- the PET film is peeled off, the coating film side is directed upward, and the coating film is irradiated with ultraviolet rays by passing a position 20 cm below the high-pressure mercury lamp with an output of 9.6 kW at a speed of 3.0 m / min. Polymerization was allowed to proceed.
- a plate-like body hereinafter referred to as “stainless steel plate with a hardened layer” in which a hardened layer having a thickness of 13 ⁇ m was formed on the stainless steel plate was obtained.
- the thickness of this hardened layer was calculated
- a stainless steel plate with a hardened layer was obtained by the same operation using another stainless steel plate of the same size.
- Table 7 shows the evaluation results.
- the adhesion test of the coating film on the surface of the acrylic resin laminate cross-cut method, JIS K5600-5-6
- JIS K5600-5-6 cross-cut method, JIS K5600-5-6
- ⁇ haze 0.1%, which was favorable.
- Example 20 Except that the polymerizable raw material was changed as shown in Table 7, cast polymerization was carried out in the same manner as in Example 19 to produce an acrylic resin laminate having a thickness of 1 mm having cured layers on both surfaces. Table 7 shows the evaluation results.
- Example 21 to 25 Casting polymerization was performed in the same manner as in Example 9 except that the polymerizable raw material was changed as shown in Table 8 using the mold 2 described in Example 19, and a plate thickness of 1 mm having a hardened layer on both surfaces. An acrylic resin laminate was obtained. Table 8 shows the evaluation results.
- Examples 26 to 31 Casting polymerization was carried out in the same manner as in Example 13 except that the polymerizable raw material was changed as shown in Table 9 using the mold 2 described in Example 19, and the thickness of the plate having a hardened layer on both surfaces was 1 mm. An acrylic resin laminate was prepared. Table 9 shows the evaluation results.
- the ultraviolet curable composition containing was apply
- the film was passed through a PET halide film at a speed of 2.5 m / min by passing a position 20 cm below the metal halide lamp with an output of 9.6 kW.
- the coating film was cured by irradiating with ultraviolet rays.
- the acrylic resin laminated body which has a hardened layer on one surface of an acrylic resin sheet was obtained by peeling a PET film.
- the integrated light amount was 570 mJ / cm 2 and the peak illuminance was 220 mW / cm 2 .
- the film thickness of the obtained cured layer was 13 ⁇ m.
- the thickness of this hardened layer was calculated
- Example 33 In the same manner as in Example 16, an acrylic resin sheet having a thickness of 1 mm was obtained. On this acrylic resin sheet, a cured layer was laminated in the same manner as in Example 32 to prepare an acrylic resin laminate having a thickness of 1 mm having cured layers on both surfaces. Table 9 shows the evaluation results.
- Example 34 Using the mold 2 described in Example 19, the polymerizable raw material was changed as shown in Table 10. The conditions other than these were cast polymerization in the same manner as in Example 9 to produce an acrylic resin laminate having a thickness of 1 mm having cured layers on both surfaces. Table 10 shows the evaluation results.
- Examples 35 to 40> The mold 2 described in Example 19 was used. A polymerizable raw material containing the amounts of syrup, MMA and NPG, and 0.3 parts of t-hexyl peroxypivalate shown in Table 11 and 0.05 part of sodium dioctylsulfosuccinate was also prepared. Cast polymerization was carried out in the same manner as in Example 19 except that these polymerizable raw materials were used, and a 1 mm thick acrylic resin laminate having cured layers on both surfaces was produced. The evaluation results are shown in Table 11.
- the acrylic resin sheet and the acrylic resin laminate of the present invention are suitable for optical applications such as a display front plate.
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Abstract
Description
<落球試験方法>
試験片サイズ;一辺50mmの正方形、
支持台サイズ;直径20mmの円形の穴が空いた5mm厚のアクリル板、
落球サイズ;ステンレス鋼製の球(球径20.0mmφ、質量35.9g)、
測定雰囲気の温度;23℃、
測定雰囲気の相対湿度;50%、
測定前の試験片の測定雰囲気中での放置時間;24hr以上、
試験方法;JIS K 7211-1記載の試験手順に従う。支持台の穴の中心と試験片の中心が一致するように、支持台の上に試験片を置き、試験片の左右2辺をセロファンテープで支持台に固定し、温度23℃、相対湿度50%の条件下、ステンレス鋼製の球を試験片の中央に落下させる。落下高さは25mm単位で変更し、各落下高さにおける試験数は20とする。
<吸湿変位量の測定方法>
長さ200mm及び幅50mmのシート試験片を、その一方の端部(長さ50mm)を水平状態に固定した状態で温度85℃及び相対湿度85%の環境下に24時間保持し、次いでシート試験片の固定されていない他方の端部の鉛直方向のたわみ量(吸湿変位量)yを測定する。
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(1)、又は、該単量体成分(a)の一部を重合して得られたシラップ(1)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(2)を用いること、並びに、
下記の工程1及び工程2を含む、前記〔27〕、〔31〕、〔33〕及び〔35〕のいずれかに記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成すると共に、このシート状重合体に前記硬化層を転写して積層体を生成する工程。
〔工程2〕;該積層体を該鋳型から剥離する工程。
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(1)、又は、該単量体成分(a)の一部を重合して得られたシラップ(1)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(2)を用いること、並びに、
下記の工程1及び工程2を含む、前記〔34〕に記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成すると共に、このシート状重合体に前記硬化層を転写して積層体を生成する工程。
〔工程2〕;該積層体を該鋳型から剥離する工程。
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(1)、又は、該単量体成分(a)の一部を重合して得られたシラップ(1)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(2)を用いること、並びに、
下記の工程1及び工程2を含む、前記〔27〕、〔31〕、〔33〕及び〔35〕のいずれかに記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を該鋳型から剥離してアクリル樹脂シートを得る工程。
〔工程2〕;該アクリル樹脂シートの少なくとも一方の表面上に硬化性組成物を塗布し、硬化することによって硬化層を形成して積層体を生成する工程。
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(1)、又は、該単量体成分(a)の一部を重合して得られたシラップ(1)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(2)を用いること、並びに、
下記の工程1及び工程2を含む、前記〔34〕に記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を該鋳型から剥離してアクリル樹脂シートを得る工程。
〔工程2〕;該アクリル樹脂シートの少なくとも一方の表面上に硬化性組成物を塗布し、硬化することによって硬化層を形成して積層体を生成する工程。
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含有する混合物の一部を重合して得られたシラップ(2)を含む原料組成物(3)を用いること、並びに、
下記の工程1及び工程2を含む、前記〔27〕、〔31〕、〔33〕及び〔35〕のいずれかに記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成すると共に、このシート状重合体に前記硬化層を転写して積層体を生成する工程。
〔工程2〕;該積層体を該鋳型から剥離する工程。
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含有する混合物の一部を重合して得られたシラップ(2)を含む原料組成物(3)を用いること、並びに、
下記の工程1及び工程2を含む、前記〔34〕に記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成すると共に、このシート状重合体に前記硬化層を転写して積層体を生成する工程。
〔工程2〕;該積層体を該鋳型から剥離する工程。
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含有する混合物の一部を重合して得られたシラップ(2)を含む原料組成物(3)を用いること、並びに、
下記の工程1及び工程2を含む、前記〔27〕、〔31〕、〔33〕及び〔35〕のいずれかに記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を該鋳型から剥離してアクリル樹脂シートを得る工程。
〔工程2〕;該アクリル樹脂シートの少なくとも一方の表面上に硬化性組成物を塗布し、硬化することによって硬化層を形成して積層体を生成する工程。
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含有する混合物の一部を重合して得られたシラップ(2)を含む原料組成物(3)を用いること、並びに、
下記の工程1及び工程2を含む、前記〔34〕に記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を該鋳型から剥離してアクリル樹脂シートを得る工程。
〔工程2〕;該アクリル樹脂シートの少なくとも一方の表面上に硬化性組成物を塗布し、硬化することによって硬化層を形成して積層体を生成する工程
本発明のアクリル樹脂組成物は、メタクリル酸メチル単位を有するアクリル重合体(A)100質量部及びオレフィン-(メタ)アクリル酸アルキル共重合体(B)0.002~0.7質量部を含有するアクリル樹脂組成物である。以下、メタクリル酸メチル及びメタクリル酸メチル単位を、それぞれ、「MMA」及び「MMA単位」と略す場合がある。
本発明のアクリル重合体(A)は、メタクリル酸メチル単位からなる単独重合体、又は、メタクリル酸メチル単位及び「他のビニル単量体単位」(即ち、MMA単位を除くビニル単量体単位)からなる共重合体である。アクリル重合体(A)は、アクリル樹脂シートの耐衝撃性、透明性、機械強度、耐候性、成形性等の観点から、メタクリル酸メチル単位50~100質量%、及び「他のビニル単量体単位」0~50質量%を含有するアクリル重合体(A-1)であることが好ましい。
本発明におけるオレフィン-(メタ)アクリル酸アルキル共重合体(B)(以下、「共重合体(B)」という場合がある。)を構成するオレフィン単位の原料となるオレフィンとしては、エチレン、プロピレン、イソプレン、ブタジエン等が挙げられる。
粉体状またはペレット状のアクリル樹脂組成物の製造方法としては、MMA又はMMA及び「他のビニル単量体」を含有する単量体混合物を含む単量体成分(a)をエチレン-アクリル酸アルキル共重合体(B-2)の存在下で重合させる方法が、アクリル樹脂シートの衝撃性及び透明性の観点から好ましい。重合方法としては、塊状重合、溶液重合、乳化重合、懸濁重合が挙げられるが、アクリル樹脂組成物の製造コスト、溶剤使用等による環境負荷、アクリル樹脂組成物の生産性、透明性の観点で、塊状重合が好ましい。
本発明のアクリル樹脂シートとしては、前記アクリル樹脂組成物を含む樹脂シートが挙げられる。また、本発明のアクリル樹脂シートとしては、JIS K 7136に基づくヘーズ値が0.5%以下で、以下に示す条件における落球試験においてJIS K 7211に基づく50%衝撃破壊高さが350mm以上である板厚2mm以下のアクリル樹脂シートが挙げられる。
試験片サイズ;一辺50mmの正方形、
支持台サイズ;直径20mmの円形の穴が空いた5mm厚のアクリル板、
落球サイズ;ステンレス鋼製の球(球径20.0mmφ、質量35.9g)、
測定雰囲気の温度;23℃、
測定雰囲気の相対湿度;50%、
測定前の試験片の測定雰囲気中での放置時間;24hr以上。
試験方法;JIS K 7211-1記載の試験手順に従う。支持台の穴の中心と試験片の中心が一致するように、支持台の上に試験片を置き、試験片の左右2辺をセロファンテープで支持台に固定し、温度23℃、相対湿度50%の条件下、ステンレス鋼製の球を試験片の中央に落下させる。落下高さは25mm単位で変更し、各落下高さにおける試験数は20とする。
吸湿変位量yは、以下に記載の方法によって測定される。先ず、固定冶具を用いて、長さ200mm及び幅50mmのシート試験片を、その一方の端部(長さ50mm)を水平状態に固定し、この状態で温度85℃及び相対湿度85%の環境下に24時間保持する(図1参照)。次いで、シート試験片の固定されていない他方の端部の鉛直方向のたわみ量(吸湿変位量)yを測定する。
本発明のアクリル樹脂シートの製造方法は、特に限定されず、注型重合法、押出成形法、射出成形法等の方法が挙げられるが、透明な樹脂シートが得られることから、注型重合法が好ましい。
本発明のアクリル樹脂積層体を得るために使用されるアクリル樹脂シートとしては、MMA単独、または、MMA及び他のビニル単量体単位を有するアクリル重合体(A)と、オレフィンー(メタ)アクリル酸アルキル共重合体(B)とを含有するアクリル樹脂組成物を使用して得られるアクリル樹脂シート、及び、JIS K 7136に基づくヘーズ値が0.5%以下で、落球試験においてJIS K 7211に基づく50%衝撃破壊高さが350mm以上である板厚2mm以下のアクリル樹脂シートから選ばれる少なくとも1種のアクリル樹脂シートが挙げられる。
アクリル樹脂積層体の製造方法としては、アクリル樹脂シートの表面上に硬化層を積層可能な公知の方法を用いることができ、例えば、以下の(1)転写法または(2)コーティング法が挙げられる。
転写法は、鋳型として、所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成され、かつ、少なくとも一方の板状体の鋳型内表面上に硬化層が形成された鋳型を用い、以下の工程1及び工程2を含む方法である。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成すると共に、このシート状重合体に前記硬化層を転写して積層体を生成する工程。
〔工程2〕;該積層体を該鋳型から剥離する工程。
コーティング法は、鋳型として、所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成された鋳型を用い、以下の工程1及び工程2を含む方法である。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を該鋳型から剥離してアクリル樹脂シートを得る工程。
〔工程2〕;該アクリル樹脂シートの少なくとも一方の表面上に硬化性組成物を塗布し、硬化することによって硬化層を形成して積層体を生成する工程。
(1)全光線透過率及びヘーズ
アクリル樹脂シートの全光線透過率及びヘーズ値は、日本電色工業(株)製のHAZE METER NDH2000(商品名)を用いてJIS K7136の測定法に準拠して測定される。
落球試験による耐衝撃性評価は、前述の方法により行なわれる。
#000のスチールウールを装着した直径25.4mmの円形パッドをアクリル樹脂積層体の表面上に置き、9.8Nの荷重下で、20mmの距離を100回往復させて擦傷処理する。次式より求められる「Δヘーズ(%)」が耐擦傷性の指標とされる。
[Δヘーズ(%)]=[擦傷後ヘーズ値(%)]-[擦傷前ヘーズ値(%)]
吸湿変位量は、前述の方法により測定される。
実施例において使用されるEMA1%分散液は、以下の方法で調製される。先ず、冷却管、温度計及び攪拌機を備えた反応器(フラスコ)中に、MMAを99部供給し、攪拌しながら加温を開始する。次いで、液温が80℃になった時点で、EMAを1部添加し、30分間攪拌し、その後、液温を室温まで冷却する。
(1)シラップ1の調製
冷却管、温度計及び攪拌機を備えた反応器中に、MMA100部を供給し、撹拌しながら、窒素ガスでバブリングした後、加熱を開始した。液温が80℃になった時点で、ラジカル重合開始剤である2,2'-アゾビス-(2,4-ジメチルバレロニトリル)0.1部を添加し、更に液温を100℃まで上昇させ、この温度を12分間維持した。その後、液温を室温まで冷却して、シラップ1を得た。このシラップ1中の重合体の含有量は約21質量%であった。
冷却管、温度計及び攪拌機を備えた反応器中に、MMA100部及び表2に示す種類と量のEMAを供給し、撹拌しながら、窒素ガスでバブリングした後、加熱を開始した。液温が80℃になった時点で、ラジカル重合開始剤であるt-ヘキシルパーオキシピバレート0.06部を添加し、更に液温を100℃まで上昇させ、この温度を10分間維持した。その後、液温を室温まで冷却した。このようにして8種類のシラップを得た。これらのシラップ中の重合体の含有量は、いずれも約21質量%であった。
冷却管、温度計及び攪拌機を備えた反応器中に、MMA、IBXMA、IBXA、TBMA部、及びBAの混合物を供給し、撹拌しながら、窒素ガスでバブリングした後、加熱を開始した。これらの単量体の使用量を表3に示す。液温が60℃になった時点で、ラジカル重合開始剤であるt-ヘキシルパーオキシピバレート0.1部を添加し、更に液温を100℃まで上昇させ、この温度を13分間維持した。その後、液温を室温まで冷却して、シラップ3を得た。このシラップ3中の重合体の含有量は約31質量%であった。
冷却管、温度計及び攪拌機を備えた反応器中に、EMA、MMA、IBXMA、IBXA、TBMA、及びBAの混合物を供給し、撹拌しながら、窒素ガスでバブリングした後、加熱を開始した。EMAの種類及びこれらの単量体の使用量を表3に示す。液温が60℃になった時点で、ラジカル重合開始剤であるt-ヘキシルパーオキシピバレート0.1部を添加し、更に液温を100℃まで上昇させ、この温度を13分間維持した。その後、液温を室温まで冷却した。このようにして7種類のシラップを得た。これらのシラップ中の重合体の含有量は、いずれも約30質量%であった。
二枚のステンレス鋼(SUS304、縦300mm、横300mm、厚み300mm)板を対向させ、その縁部を軟質ポリ塩化ビニル製のガスケットで封じ、注型重合用の鋳型1を作製した。MMA100部にEB440Hを0.1部溶解した混合液、t-ヘキシルパーオキシピバレート0.2部、ジオクチルスルホコハク酸ナトリウム0.01部を含有する重合性原料を調製した。前記鋳型内にこの重合性原料を注入し、対向するステンレス板の間隔を1.6mmに調整した。次いで、この鋳型を80℃の水浴中で1時間加熱し、更に130℃の空気炉中で1時間加熱することにより、鋳型内の重合性原料を重合硬化させ、シート状重合体を得た。その後、鋳型を冷却し、ステンレス鋼板からシート状重合体を剥離して、板厚1mmのアクリル樹脂シートを得た。評価結果を表4に示す。
重合性原料を表4に示すように変更したこと以外は、実施例1と同様にして注型重合を行い、板厚1mmのアクリル樹脂シートを作製した。評価結果を表4に示す。
MMA100部、t-ヘキシルパーオキシピバレート0.3部、及びジオクチルスルホコハク酸ナトリウム0.05部を含有する重合性原料を調製した。この重合性原料を用いたこと以外は実施例1と同様にして注型重合を行い、板厚1mmのアクリル樹脂シートを得た。評価結果を表4に示す。このアクリル樹脂シートは、共重合体(B)を使用していないことから、落球試験での50%衝撃破壊高さが小さく、耐衝撃性が不良であった。
重合性原料を表4に示すように変更したこと以外は、実施例1と同様にしてアクリル樹脂シートを作製した。このアクリル樹脂シートは、共重合体(B)の含有量が1質量%であって多過ぎることから、ヘーズ値が高く透明性が悪かった。
前記シラップ1(70部)、MMA29.5部、EMA1%分散液0.5部、EDMA0.03部、t-ヘキシルパーオキシピバレート0.3部、及びジオクチルスルホコハク酸ナトリウム0.05部を含有する重合性原料を調製した。この重合性原料を用いたこと以外は実施例1と同様にして注型重合を行い、板厚1mmのアクリル樹脂シートを得た。評価結果を表5に示す。
重合性原料を表5に示すように変更したこと以外は、実施例9と同様にして注型重合を行い、板厚1mmのアクリル樹脂シートを作製した。評価結果を表5に示す。
前記シラップ2-1(70部)、MMA30部、EDMA0.03部、t-ヘキシルパーオキシピバレート0.3部、及びジオクチルスルホコハク酸ナトリウム0.05部を含有する重合性原料を調製した。この重合性原料を用いたこと以外は実施例1と同様にして注型重合を行い、板厚1mmのアクリル樹脂シートを得た。評価結果を表6に示す。
重合性原料を表6に示すように変更したこと以外は、実施例13と同様にして注型重合を行い、板厚1mmのアクリル樹脂シートを作製した。評価結果を表6に示す。
ステンレス鋼板(SUS304、縦300mm、横300mm、厚み300mm)上に、TAS(50部)、C6DA(50部)及びBEE(2部)を含む紫外線硬化性組成物を塗布した。この塗膜上に、厚さ12μmのポリエチレンテレフタレートフィルム(PETフィルム)を重ね、JIS硬度40°のゴムロールを用いて、塗膜の厚みが15μmとなるように過剰な紫外線硬化性組成物をしごき出しながら塗膜が気泡を含まないように圧着させた。塗膜の厚みは、紫外線硬化性組成物の供給量及び展開面積(530cm2)から算出した。
重合性原料を表7に示すように変更したこと以外は、実施例19と同様にして注型重合を行い、両表面に硬化層を有する板厚1mmのアクリル樹脂積層体を作製した。評価結果を表7に示す。
実施例19に記載の鋳型2を用い、重合性原料を表8に示すように変更したこと以外は、実施例9と同様にして注型重合を行い、両表面に硬化層を有する板厚1mmのアクリル樹脂積層体を得た。評価結果を表8に示す。
実施例19に記載の鋳型2を用い、重合性原料を表9に示すように変更したこと以外は、実施例13と同様にして注型重合を行い、両表面に硬化層を有する板厚1mmのアクリル樹脂積層体を作製した。評価結果を表9に示す。
実施例15と同様にして板厚1mmのアクリル樹脂シートを得た。このアクリル樹脂シートを60℃に加温し、次いでその上に、TAS(35部)、C6DA(30部)、M305(10部)、M400(25部)及び「DAROCUR TPO」(2部)を含む紫外線硬化性組成物を塗布した。この塗膜上に、厚さ25μmのPETフィルムを重ね、JIS硬度40°のゴムロールを用いて、塗膜の厚みが15μmとなるように過剰な紫外線硬化性組成物をしごき出しながら塗膜が気泡を含まないように圧着させた。なお、この塗膜の厚みは、紫外線硬化性組成物の供給量及び展開面積(530cm2)から算出した。得られた積層物を60℃の雰囲気中に置いて、60秒間経過させた。
実施例16と同様にして板厚1mmのアクリル樹脂シート得た。このアクリル樹脂シートの上に、実施例32と同様にして硬化層を積層させることにより、両表面に硬化層を有する板厚1mmのアクリル樹脂積層体を作製した。評価結果を表9に示す。
実施例19に記載の鋳型2を用い、重合性原料を表10に示すように変更した。これら以外の条件は、実施例9と同様にして注型重合を行い、両表面に硬化層を有する板厚1mmのアクリル樹脂積層体を作製した。評価結果を表10に示す。
実施例19に記載の鋳型2を用いた。また、表11に示す量のシラップ、MMA及びNPG、並びにt-ヘキシルパーオキシピバレート0.3部、及びジオクチルスルホコハク酸ナトリウム0.05部を含有する重合性原料を調製した。これらの重合性原料を用いたこと以外は実施例19と同様にして注型重合を行い、両表面に硬化層を有する板厚1mmのアクリル樹脂積層体を作製した。評価結果を表11に示す。
シラップ1(70部)、MMA30部、t-ヘキシルパーオキシピバレート0.3部、及びジオクチルスルホコハク酸ナトリウム0.05部を含有する重合性原料を調製した。この重合性原料を用いたこと、及び、実施例19に記載の鋳型2を用いたこと以外は、実施例9と同様にして注型重合を行い、両表面に硬化層を有する板厚1mmのアクリル樹脂積層体を作製した。評価結果を表11に示す。このアクリル樹脂積層体は、共重合体(B)を使用していないため、耐衝撃性が低く、また、「他のビニル単量体」を使用していないため、吸湿変位量が大きかった。
実施例19に記載の鋳型2を用い、重合性原料としてシラップ4-7を用いた。これら以外の条件は、実施例13と同様にして注型重合を行い、両表面に硬化層を有する板厚1mmのアクリル樹脂積層体を作製した。評価結果を表11に示す。このアクリル樹脂積層体は、「他のビニル単量体」の使用量が多いため、耐衝撃性が低かった。
2 シート試験片の固定されていない端部
3 シート試験片の固定冶具
L1 シート試験片の固定部の長さ(50mm)
Claims (43)
- メタクリル酸メチル単位を有するアクリル重合体(A)100質量部及びオレフィン-(メタ)アクリル酸アルキル共重合体(B)0.002~0.7質量部を含有するアクリル樹脂組成物。
- メタクリル酸メチル単位を有するアクリル重合体(A)が、メタクリル酸メチル単位50~100質量%及び他のビニル単量体単位0~50質量%を含有するアクリル重合体(A-1)である請求項1に記載のアクリル樹脂組成物。
- オレフィン-(メタ)アクリル酸アルキル共重合体(B)が、エチレン-(メタ)アクリル酸アルキル共重合体(B-1)である請求項2に記載のアクリル樹脂組成物。
- エチレン-(メタ)アクリル酸アルキル共重合体(B-1)が、エチレン-アクリル酸アルキル共重合体(B-2)である請求項3に記載のアクリル樹脂組成物。
- 前記他のビニル単量体単位が、炭素数6~20の脂環式炭化水素基を有する(メタ)アクリル酸エステル単位、炭素数3~10の直鎖又は分岐の炭化水素基を有する(メタ)アクリル酸エステル単位、及び分子中に2個以上のエチレン性不飽和結合を有する単量体単位から選ばれる少なくとも1種である請求項2又は3に記載のアクリル樹脂組成物。
- 前記他のビニル単量体単位が、炭素数6~20の脂環式炭化水素基を有する(メタ)アクリル酸エステル単位、炭素数3~10の直鎖又は分岐の炭化水素基を有する(メタ)アクリル酸エステル単位、及び分子中に2個以上のエチレン性不飽和結合を有する単量体単位から選ばれる少なくとも1種である請求項4に記載のアクリル樹脂組成物。
- アクリル重合体(A-1)100質量部に対するエチレン-アクリル酸アルキル共重合体(B-2)の含有量が0.02~0.5質量部である請求項4に記載のアクリル樹脂組成物。
- エチレン-アクリル酸アルキル共重合体(B-2)中のアクリル酸アルキル単位の含有量が15~40質量%である請求項4、6及び7のいずれかの一項に記載のアクリル樹脂組成物。
- 請求項1、2、3、4、6及び7のいずれかの一項に記載のアクリル樹脂組成物を含むアクリル樹脂シートであって、アクリル重合体(A)又はアクリル重合体(A-1)中にオレフィン-(メタ)アクリル酸アルキル共重合体(B)、エチレン-(メタ)アクリル酸アルキル共重合体(B-1)又はエチレン-アクリル酸アルキル共重合体(B-2)が分散されているアクリル樹脂シート。
- 請求項5に記載のアクリル樹脂組成物を含むアクリル樹脂シートであって、アクリル重合体(A-1)中にオレフィン-(メタ)アクリル酸アルキル共重合体(B)又はエチレン-(メタ)アクリル酸アルキル共重合体(B-1)が分散されているアクリル樹脂シート。
- 請求項8に記載のアクリル樹脂組成物を含むアクリル樹脂シートであって、アクリル重合体(A-1)中にエチレン-アクリル酸アルキル共重合体(B-2)が分散されているアクリル樹脂シート。
- JIS K 7136に基づくヘーズ値が0.5%以下で、以下に示す条件における落球試験においてJIS K 7211に基づく50%衝撃破壊高さが350mm以上で、板厚が2mm以下である、アクリル樹脂シート。
<落球試験方法>
試験片サイズ;一辺50mmの正方形、
支持台サイズ;直径20mmの円形の穴が空いた5mm厚のアクリル板、
落球サイズ;ステンレス鋼製の球(球径20.0mmφ、質量35.9g)、
測定雰囲気の温度;23℃、
測定雰囲気の相対湿度;50%、
測定前の試験片の測定雰囲気中での放置時間;24hr以上、
試験方法;JIS K 7211-1記載の試験手順に従う。支持台の穴の中心と試験片の中心が一致するように、支持台の上に試験片を置き、試験片の左右2辺をセロファンテープで支持台に固定し、温度23℃、相対湿度50%の条件下、ステンレス鋼製の球を試験片の中央に落下させる。落下高さは25mm単位で変更し、各落下高さにおける試験数は20とする。 - 請求項12に記載のアクリル樹脂シートであって、以下に記載の方法によって測定される吸湿変位量yが45mm以下であるアクリル樹脂シート。
<吸湿変位量の測定方法>
長さ200mm及び幅50mmのシート試験片を、その一方の端部(長さ50mm)を水平状態に固定した状態で温度85℃及び相対湿度85%の環境下に24時間保持し、次いでシート試験片の固定されていない他方の端部の鉛直方向のたわみ量(吸湿変位量)yを測定する。 - 請求項1、2、3、4、6及び7のいずれかの一項に記載のアクリル樹脂組成物を含むアクリル樹脂シートであって、アクリル重合体(A)又はアクリル重合体(A-1)中にオレフィン-(メタ)アクリル酸アルキル共重合体(B)、エチレン-(メタ)アクリル酸アルキル共重合体(B-1)又はエチレンーアクリル酸アルキル共重合体(B-2)が分散されている請求項12記載のアクリル樹脂シート。
- 請求項5に記載のアクリル樹脂組成物を含むアクリル樹脂シートであって、アクリル重合体(A-1)中にオレフィン-(メタ)アクリル酸アルキル共重合体(B)又はエチレン-(メタ)アクリル酸アルキル共重合体(B-1)が分散されている請求項12記載のアクリル樹脂シート。
- 請求項8に記載のアクリル樹脂組成物を含むアクリル樹脂シートであって、アクリル重合体(A-1)中にエチレン-アクリル酸アルキル共重合体(B-2)が分散されている請求項12記載のアクリル樹脂シート。
- 請求項5に記載のアクリル樹脂組成物を含むアクリル樹脂シートであって、アクリル重合体(A-1)中にオレフィン-(メタ)アクリル酸アルキル共重合体(B)又はエチレン-(メタ)アクリル酸アルキル共重合体(B-1)が分散されている請求項13記載のアクリル樹脂シート。
- 請求項6に記載のアクリル樹脂組成物を含むアクリル樹脂シートであって、アクリル重合体(A-1)中にエチレン-アクリル酸アルキル共重合体(B-2)が分散されている請求項13記載のアクリル樹脂シート。
- 重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(1)、又は、該単量体成分(a)の一部を重合して得られたシラップ(1)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(2)を用い、
所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成された鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を該鋳型から剥離する、請求項10~13及び請求項15~18のいずれかの一項に記載のアクリル樹脂シートの製造方法。 - 重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(1)、又は、該単量体成分(a)の一部を重合して得られたシラップ(1)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(2)を用い、
所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成された鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を該鋳型から剥離する、請求項9に記載のアクリル樹脂シートの製造方法。 - 重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(1)、又は、該単量体成分(a)の一部を重合して得られたシラップ(1)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(2)を用い、
所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成された鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を該鋳型から剥離する、請求項14に記載のアクリル樹脂シートの製造方法。 - 重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含有する混合物の一部を重合して得られたシラップ(2)を含む原料組成物(3)を用い、
所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成された鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を鋳型から剥離する、請求項10~13及び請求項15~18のいずれかの一項に記載のアクリル樹脂シートの製造方法。 - 重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含有する混合物の一部を重合して得られたシラップ(2)を含む原料組成物(3)を用い、
所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成された鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を鋳型から剥離する、請求項9に記載のアクリル樹脂シートの製造方法。 - 重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含有する混合物の一部を重合して得られたシラップ(2)を含む原料組成物(3)を用い、
所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成された鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を鋳型から剥離する、請求項14に記載のアクリル樹脂シートの製造方法。 - メタクリル酸メチル単位50~100質量%及び他のビニル単量体単位0~50質量%を有するアクリル重合体(A-1)と、オレフィン-(メタ)アクリル酸アルキル共重合体(B)とを含有するアクリル樹脂組成物を使用して得られるアクリル樹脂シートの少なくとも一方の表面に硬化層が積層されたアクリル樹脂積層体。
- オレフィン-(メタ)アクリル酸アルキル共重合体(B)が、エチレン-(メタ)アクリル酸アルキル共重合体(B-1)である請求項25に記載のアクリル樹脂積層体。
- エチレン-(メタ)アクリル酸アルキル共重合体(B-1)が、エチレン-アクリル酸アルキル共重合体(B-2)である請求項26に記載のアクリル樹脂積層体。
- 前記他のビニル単量体単位が、炭素数6~20の脂環式炭化水素基を有する(メタ)アクリル酸エステル単位、炭素数3~10の直鎖又は分岐の炭化水素基を有する(メタ)アクリル酸エステル単位、及び分子中に2個以上のエチレン性不飽和結合を有する単量体単位から選ばれる少なくとも1種である請求項25に記載のアクリル樹脂積層体。
- オレフィン-(メタ)アクリル酸アルキル共重合体(B)が、エチレン-(メタ)アクリル酸アルキル共重合体(B-1)である請求項28に記載のアクリル樹脂積層体。
- エチレン-(メタ)アクリル酸アルキル共重合体(B-1)が、エチレン-アクリル酸アルキル共重合体(B-2)である請求項29に記載のアクリル樹脂積層体。
- 前記アクリル樹脂組成物中のアクリル重合体(A-1)100質量部に対するエチレン-アクリル酸アルキル共重合体(B-2)の含有量が0.002~0.7質量部である請求項27に記載のアクリル樹脂積層体。
- 前記アクリル樹脂組成物中のアクリル重合体(A-1)100質量部に対するエチレン-アクリル酸アルキル共重合体(B-2)の含有量が0.002~0.7質量部である請求項30に記載のアクリル樹脂積層体。
- 前記アクリル樹脂組成物中のアクリル重合体(A-1)100質量部に対するエチレン-アクリル酸アルキル共重合体(B-2)の含有量が0.01~0.1質量部である請求項31に記載のアクリル樹脂積層体。
- 請求項12、13及び15~18のいずれかの一項に記載のアクリル樹脂シートの少なくとも一方の表面に硬化層が積層されたアクリル樹脂積層体。
- 請求項14に記載のアクリル樹脂シートの少なくとも一方の表面に硬化層が積層されたアクリル樹脂積層体。
- 鋳型として、所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成され、かつ、少なくとも一方の板状体の鋳型内表面上に硬化層が形成された鋳型を用いること、
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(1)、又は、該単量体成分(a)の一部を重合して得られたシラップ(1)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(2)を用いること、並びに、
下記の工程1及び工程2を含む、請求項27、31、33及び35のいずれかの一項に記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成すると共に、このシート状重合体に前記硬化層を転写して積層体を生成する工程。
〔工程2〕;該積層体を該鋳型から剥離する工程。 - 鋳型として、所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成され、かつ、少なくとも一方の板状体の鋳型内表面上に硬化層が形成された鋳型を用いること、
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(1)、又は、該単量体成分(a)の一部を重合して得られたシラップ(1)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(2)を用いること、並びに、
下記の工程1及び工程2を含む、請求項34に記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成すると共に、このシート状重合体に前記硬化層を転写して積層体を生成する工程。
〔工程2〕;該積層体を該鋳型から剥離する工程。 - 鋳型として、所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成された鋳型を用いること、
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(1)、又は、該単量体成分(a)の一部を重合して得られたシラップ(1)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(2)を用いること、並びに、
下記の工程1及び工程2を含む、請求項27、31、33及び35のいずれかの一項に記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を該鋳型から剥離してアクリル樹脂シートを得る工程。
〔工程2〕;該アクリル樹脂シートの少なくとも一方の表面上に硬化性組成物を塗布し、硬化することによって硬化層を形成して積層体を生成する工程。 - 鋳型として、所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成された鋳型を用いること、
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(1)、又は、該単量体成分(a)の一部を重合して得られたシラップ(1)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含む原料組成物(2)を用いること、並びに、
下記の工程1及び工程2を含む、請求項34に記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を該鋳型から剥離してアクリル樹脂シートを得る工程。
〔工程2〕;該アクリル樹脂シートの少なくとも一方の表面上に硬化性組成物を塗布し、硬化することによって硬化層を形成して積層体を生成する工程。 - 鋳型として、所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成され、かつ、少なくとも一方の板状体の鋳型内表面上に硬化層が形成された鋳型を用いること、
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含有する混合物の一部を重合して得られたシラップ(2)を含む原料組成物(3)を用いること、並びに、
下記の工程1及び工程2を含む、請求項27、31、33及び35のいずれかの一項に記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成すると共に、このシート状重合体に前記硬化層を転写して積層体を生成する工程。
〔工程2〕;該積層体を該鋳型から剥離する工程。 - 鋳型として、所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成され、かつ、少なくとも一方の板状体の鋳型内表面上に硬化層が形成された鋳型を用いること、
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含有する混合物の一部を重合して得られたシラップ(2)を含む原料組成物(3)を用いること、並びに、
下記の工程1及び工程2を含む、請求項34に記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成すると共に、このシート状重合体に前記硬化層を転写して積層体を生成する工程。
〔工程2〕;該積層体を該鋳型から剥離する工程。 - 鋳型として、所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成された鋳型を用いること、
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含有する混合物の一部を重合して得られたシラップ(2)を含む原料組成物(3)を用いること、並びに、
下記の工程1及び工程2を含む、請求項27、31、33及び35のいずれかの一項に記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を該鋳型から剥離してアクリル樹脂シートを得る工程。
〔工程2〕;該アクリル樹脂シートの少なくとも一方の表面上に硬化性組成物を塗布し、硬化することによって硬化層を形成して積層体を生成する工程。 - 鋳型として、所定間隔で対向配置された2枚の板状体とその縁部に配置された封止材料とによって形成された鋳型を用いること、
重合性原料として、メタクリル酸メチル又はメタクリル酸メチル及び他のビニル単量体を有する単量体混合物を含む単量体成分(a)と、エチレン-アクリル酸アルキル共重合体(B-2)とを含有する混合物の一部を重合して得られたシラップ(2)を含む原料組成物(3)を用いること、並びに、
下記の工程1及び工程2を含む、請求項34に記載のアクリル樹脂積層体の製造方法。
〔工程1〕;前記鋳型内に前記重合性原料を注入して重合硬化させてシート状重合体を生成し、このシート状重合体を該鋳型から剥離してアクリル樹脂シートを得る工程。
〔工程2〕;該アクリル樹脂シートの少なくとも一方の表面上に硬化性組成物を塗布し、硬化することによって硬化層を形成して積層体を生成する工程。
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Also Published As
Publication number | Publication date |
---|---|
KR20140034815A (ko) | 2014-03-20 |
TW201247715A (en) | 2012-12-01 |
EP2711394A1 (en) | 2014-03-26 |
EP2711394A4 (en) | 2014-04-02 |
JP6007789B2 (ja) | 2016-10-12 |
US9624368B2 (en) | 2017-04-18 |
JPWO2012153733A1 (ja) | 2014-07-31 |
CN103517946B (zh) | 2015-10-21 |
CN103517946A (zh) | 2014-01-15 |
US20140141270A1 (en) | 2014-05-22 |
TWI591079B (zh) | 2017-07-11 |
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