WO2017141449A1 - 粘着剤、及びこれを用いた物品 - Google Patents
粘着剤、及びこれを用いた物品 Download PDFInfo
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- WO2017141449A1 WO2017141449A1 PCT/JP2016/056222 JP2016056222W WO2017141449A1 WO 2017141449 A1 WO2017141449 A1 WO 2017141449A1 JP 2016056222 W JP2016056222 W JP 2016056222W WO 2017141449 A1 WO2017141449 A1 WO 2017141449A1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on 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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such 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
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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
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific 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
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
- B32B17/10018—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising only one glass sheet
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
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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
- B32B2451/00—Decorative or ornamental articles
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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
- B32B2607/00—Walls, panels
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/10—Presence of inorganic materials
- C09J2400/14—Glass
- C09J2400/143—Glass in the substrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2463/00—Presence of epoxy resin
Definitions
- the present invention relates to an adhesive.
- this invention relates to the adhesive which can be used suitably for bonding of glass and a decorative sheet, and bonding of a transparent resin sheet and a decorative sheet.
- glass has opened and closed the front panel of the door body that opens and closes the front part of the main body and the flat part of the main body of articles such as refrigerators, washing machines, cupboards, and clothes racks due to its transparent design feeling It attracts attention as a member constituting the flat panel of the lid.
- glass has problems such as low impact resistance and easy cracking, low workability, high specific gravity and heavy.
- a front panel of a refrigerator door body it is proposed to use a laminated sheet in which a resin sheet (decorative sheet) to which a design is applied is bonded to the back side of a transparent resin sheet instead of glass (for example, (See Patent Document 3).
- a resin sheet decorative sheet
- a transparent resin sheet instead of glass
- an adhesive can be used for bonding the transparent resin sheet and the decorative sheet from the viewpoint of preventing thermal discoloration of the printed pattern provided on the decorative sheet, thermal deformation of the wrinkle pattern, and the like. is there.
- the conventional adhesive has a disadvantage that the transparent resin sheet and the decorative sheet are peeled off by the outgas generated from the resin sheet, particularly in a high temperature and high humidity environment; Is pushed from the back side, it will be observed as a dent from the front side of the door body, etc., and the design will be deteriorated; and the manufacturing process of the refrigerator door body In the step of filling the foamed heat insulating material therein, there was a disadvantage that the transparent resin sheet and the decorative sheet would peel off. In order to use the pressure-sensitive adhesive for bonding the transparent resin sheet and the decorative sheet, it is required to eliminate these disadvantages.
- Examples of the technology for solving the above disadvantages of the pressure-sensitive adhesive in a high temperature and high humidity environment include, for example, “(meth) acrylic acid ester, carboxyl group-containing monomer and hydroxyl group-containing monomer copolymerizable with the (meth) acrylic acid ester”.
- An acrylic pressure-sensitive adhesive composition containing an acrylic copolymer (A) having a weight average molecular weight of 500,000 to 2,000,000 and a crosslinking agent (B), With respect to 100 parts by mass of the acrylic copolymer (A), 0.05 to 1.6 parts by mass of a metal chelate type crosslinking agent as the crosslinking agent (B) and 0.05 to 0.
- the subject of this invention is the adhesive which can be used suitably for bonding of glass and a decorative sheet, and bonding of a transparent resin sheet and a decorative sheet, and the makeup using the same It is in providing a sheet
- the treatment with a residual strength of adhesion to glass of -30 ° C and 90% relative humidity for 6 hours followed by exposure to 60 ° C and 90% relative humidity for 6 hours is one cycle.
- Adhesive strength with at least any one resin selected from the group consisting of acrylic resins, aromatic polycarbonate resins, and polyester resins other than acrylic resins and aromatic polycarbonate resins is a temperature of 60 ° C.
- Residual adhesion strength with at least one resin selected from the group consisting of acrylic resins, aromatic polycarbonate resins, and polyester resins other than acrylic resins and aromatic polycarbonate resins is a temperature- 70% after a heat cycle treatment in which a total of 3 cycles is performed, with 1 cycle consisting of 6 hours exposure at 30 ° C. and 90% relative humidity followed by 6 hours exposure at 60 ° C.
- the residual strength of adhesion strength with at least one resin selected from the group consisting of acrylic resins, aromatic polycarbonate resins, and polyester resins other than acrylic resins and aromatic polycarbonate resins has a concentration of 5
- a front panel of a door body that opens and closes a front portion of an article body In order from the front side of the article, ( ⁇ ) resin film layer; ( ⁇ ) A layer including the pressure-sensitive adhesive according to the above [1]; and ( ⁇ ) a panel having a glass or transparent resin sheet layer. [11].
- the pressure-sensitive adhesive of the present invention can be suitably used for bonding between a glass and a decorative sheet and bonding between a transparent resin sheet and a decorative sheet.
- the pressure-sensitive adhesive of the present invention is used to obtain a front panel or a flat panel (including glass panels and transparent resin sheet panels) having a glass-like design, and an article including these panels. It can be used suitably.
- the term “sheet” is used as a term including films and plates.
- the term “resin” is used as a term including a resin mixture containing two or more resins and a resin composition containing components other than resins.
- the term “front panel” is used interchangeably or interchangeably with any of a flat panel, a back panel, a side panel, and a bottom panel.
- the term “door” is used interchangeably or interchangeably with “lid”.
- front of article is not intended to be bound by this definition, but generally refers to the face of an article that the user faces when the article is applied to a normally scheduled application. And it is not limited to one plane.
- Adhesive The adhesive of the present invention comprises (A) 100 parts by mass of an acrylic polymer having a glass transition temperature of ⁇ 50 to ⁇ 25 ° C .; (B) 0.01 to 3 parts by mass of a silane coupling agent having an epoxy group; C) 0.01 to 0.9 parts by mass of a compound having two or more epoxy groups in one molecule; and (D) 0.01 to 0.5 parts by mass of an organic polyvalent metal compound.
- (A) Acrylic polymer having a glass transition temperature of ⁇ 50 to ⁇ 25 ° C.
- the acrylic polymer of the above component (A) exhibits adhesiveness as a main component of the pressure sensitive adhesive, and the components (B) to (D). ), And other optional components.
- the glass transition temperature of the acrylic polymer of the component (A) is ⁇ 50 ° C. or higher, preferably ⁇ 40 ° C. or higher, from the viewpoint of eliminating the above-mentioned inconvenience related to the dent.
- the glass transition temperature of the acrylic polymer of the component (A) is ⁇ 25 ° C. or lower, preferably ⁇ 30 ° C. or lower, from the viewpoint of improving the tack property (initial adhesion).
- the glass transition temperature of the acrylic polymer of the component (A) is usually ⁇ 50 ° C. or higher and ⁇ 25 ° C. or lower, preferably ⁇ 50 ° C. or higher and ⁇ 30 ° C. or lower, ⁇ 40 ° C. or higher and ⁇ 25 ° C. or lower. Or it may be -40 ° C or higher and -30 ° C or lower.
- the glass transition temperature of the acrylic polymer of the component (A) is a calculated value obtained by a conventional method, that is, a value obtained from the following formula (Fox formula).
- 1 / (Tg + 273) W 1 / (Tg 1 +273) + W 2 / (Tg 2 +273) + W 3 / (Tg 3 +273) +... + W n / (Tg n +273)
- Tg is a glass transition temperature (° C.) of a polymer composed of n types of monomers, and W 1 , W 2 , W 3 ... W n are each in the monomer composition.
- Tg 1, Tg 2, Tg 3 ⁇ Tg n is the glass transition temperature of the homopolymer of each monomer (° C.).
- Tg of each homopolymer for example, a numerical value described in a polymer handbook or the like can be used.
- the acrylic polymer as the component (A) is not limited except that the glass transition temperature is ⁇ 50 to ⁇ 25 ° C., and any acrylic polymer can be used.
- the molecular weight of the acrylic polymer of component (A) is not particularly limited as long as the glass transition temperature is ⁇ 50 to ⁇ 25 ° C.
- the acrylic polymer include one or a mixture of two or more of a (meth) acrylic acid alkyl ester monomer, a carboxyl group-containing monomer, an epoxy group-containing monomer, and a hydroxyl group-containing (meth) acrylic acid ester monomer. Examples thereof include a polymer or a copolymer as a monomer.
- (meth) acrylic acid means acrylic acid or methacrylic acid.
- Examples of the (meth) acrylic acid alkyl ester monomer include, for example, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, pentyl (meth) acrylate, ( Hexyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isooctyl (meth) acrylate, decyl (meth) acrylate, dodecyl (meth) acrylate, myristyl (meth) acrylate, Mention may be made of palmityl (meth) acrylate and stearyl (meth) acrylate.
- carboxyl group-containing monomer examples include acrylic acid, methacrylic acid, itaconic acid, and ⁇ -carboxyethyl (meth) acrylate.
- epoxy group-containing monomer examples include glycidyl (meth) acrylate and 4-hydroxybutyl (meth) acrylate glycidyl ether.
- hydroxyl group-containing (meth) acrylic acid ester monomer examples include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, (meth) acrylic acid 2 -Hydroxybutyl, 3-hydroxybutyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, and the like.
- Examples of commercially available products include “Acrybase LKG-1010” (trade name): glass transition temperature of ⁇ 34 ° C .; “Acrybase LKG-1012” (trade name): glass transition temperature of ⁇ 35 ° C .; Base LKG-1001 “(trade name): glass transition temperature -40 ° C; and” Acrybase LKG-1007 “(trade name): glass transition temperature-44 ° C.
- the acrylic polymer of the component (A) one or a mixture of two or more of these can be used.
- a mixture as said component (A), what is necessary is just to make it the glass transition temperature as a mixture fall in the above-mentioned range.
- the glass transition temperature of the component having the highest glass transition temperature is preferably ⁇ 25 ° C. or lower, and the glass transition temperature of the component having the lowest glass transition temperature is ⁇ 50 ° C. or higher. It should just become.
- Silane coupling agent having an epoxy group is a hydrolyzable group (for example, an alkoxy group such as a methoxy group or an ethoxy group; an acyloxy group such as an acetoxy group; a halogen group such as a chloro group); And a silane compound having at least two different reactive groups such as an organic functional group (for example, amino group, vinyl group, epoxy group, methacryloxy group, acryloxy group, isocyanate group).
- an organic functional group for example, amino group, vinyl group, epoxy group, methacryloxy group, acryloxy group, isocyanate group.
- the silane coupling agent of the component (B) can have a chemical bond or a strong interaction with the component (A) or the component (C) by having an epoxy group.
- the silane coupling agent of the said component (B) may have organic functional groups other than an epoxy group in the range which does not inhibit such a chemical bond and interaction. Due to the action of the epoxy group, an appropriate hardness is imparted to the pressure-sensitive adhesive, and inconveniences associated with dents can be eliminated.
- the silane coupling agent of the component (B) has a hydrolyzable group, so that it has sufficient hardness to eliminate inconveniences related to dents, but in the foam insulation filling process. The above-mentioned inconvenience related to peeling can be solved.
- the organic functional group is an epoxy group, the silane coupling agent of the said component (B) is excellent in miscibility with the said component (C) or the said component (D).
- silane coupling agent having an epoxy group examples include 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3 -Glycidoxypropylmethyldiethoxysilane, 3-glycidoxypropyltriethoxysilane and the like.
- silane coupling agent of the said component (B) these 1 type, or 2 or more types of mixtures can be used.
- the blending amount of the silane coupling agent of the component (B) is based on 100 parts by mass of the component (A) from the viewpoint of eliminating the above-mentioned inconvenience related to peeling in the foam heat insulating material filling step and the above-mentioned inconvenience related to dents.
- the amount is usually 0.01 parts by mass or more, preferably 0.03 parts by mass or more.
- the compounding quantity of the said component (B) silane coupling agent is 3 mass parts or less normally from a viewpoint which makes heat cycle resistance and alkali resistance favorable, Preferably it is 1.5 mass parts or less.
- the compounding amount of the component (B) silane coupling agent is usually 0.01 parts by mass or more and 3 parts by mass or less, preferably 0.01 parts by mass or more and 1. It may be 5 parts by mass or less, 0.03 parts by mass to 3 parts by mass, or 0.03 parts by mass to 1.5 parts by mass.
- the epoxy group-containing compound of the component (C) has two or more epoxy groups in one molecule, and the components (A) and (B) Chemical bond or strong interaction. Thereby, moderate hardness is provided to an adhesive and the above-mentioned inconvenience about a dent can be eliminated.
- the epoxy group-containing compound of the component (C) exhibits a specific high compatibility with the component (D), and can maintain adhesive strength and transparency even in a high temperature and high humidity environment.
- the epoxy group-containing compound of the component (C) is clearly distinguished from the component (B) in that it does not have a hydrolyzable group.
- the silane compound having two or more epoxy groups in one molecule and having a hydrolyzable group is the component (B).
- the epoxy group-containing compound of component (C) is not particularly limited as long as it has two or more epoxy groups in one molecule and does not have a hydrolyzable group.
- Examples of the epoxy group-containing compound of the above component (C) include 1,3-bis (N, N′-diglycidylaminomethyl) cyclohexane, N, N, N, N′-tetraglycidyl-m-xylenediamine, Diglycidyl aniline, diglycidyl amine, bisphenol A-epichlorohydrin type epoxy resin, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, glycerin diglycidyl ether, glycerin triglycidyl ether, 1,6-hexanediol diglycidyl ether, and A trimethylol propane triglycidyl ether etc. can be mentioned.
- these 1 type, or 2 or more types of mixtures can be used.
- the compounding amount of the epoxy group-containing compound of the component (C) is based on 100 parts by mass of the component (A) from the viewpoint of eliminating the above-mentioned inconvenience related to peeling in the foam heat insulating material filling step and the above-mentioned inconvenience related to dents. 0.01 parts by mass or more, preferably 0.03 parts by mass or more, more preferably 0.04 parts by mass or more.
- the compounding amount of the epoxy group-containing compound of the component (C) is 0.9 parts by mass or less, preferably 0.6 parts by mass or less, more preferably 0.5 parts by mass, from the viewpoint of improving heat resistant adhesion. Or less.
- the compounding amount of the epoxy group-containing compound of the component (C) is preferably 0.3 parts by mass or less, more preferably 0.2 parts by mass or less from the viewpoint of anchoring property to the adherend. .
- the compounding amount of the epoxy group-containing compound of the component (C) is preferably 0.3 parts by mass or more, more preferably 0.4 parts by mass or more, from the viewpoint of preventing cohesive failure of the adhesive layer during the heat cycle. It may be.
- the amount of the epoxy group-containing compound of the component (C) is usually 0.01 parts by mass or more and 0.9 parts by mass or less, alternatively 100 parts by mass of the component (A).
- the organic polyvalent metal compound of the component (D) functions to assist the chemical reaction and interaction between the component (C) and the component (A) or the component (B). To do. Thereby, moderate hardness is given to an adhesive and the above-mentioned inconvenience about a dent can be eliminated. Moreover, the organic polyvalent metal compound of the said component (D) shows specific high compatibility with the said component (C), and can maintain adhesive strength and transparency also in a high-temperature, high-humidity environment.
- organic polyvalent metal compound of the component (D) examples include polyvalent metals such as aluminum, zirconium, and titanium, and organic compounds such as alkyl esters, alcohol compounds, carboxylic acid compounds, ether compounds, and ketone compounds. And those having a covalent bond or a coordinate bond.
- organoaluminum compounds that can be used as the organic polyvalent metal compound of component (D) include aluminum trisacetylacetonate, aluminum ethylacetoacetate / diisopropylate, aluminum bisethylacetoacetate / monoacetylacetonate, Examples thereof include aluminum trisethyl acetoacetate, aluminum ethylate, aluminum isopropylate, aluminum diisopropylate monosecondary butyrate, and aluminum secondary butyrate.
- Examples of the organic zirconium compound that can be used as the organic polyvalent metal compound of the component (D) include n-propyl zirconate, n-butyl zirconate, zirconium tetraacetylacetonate, zirconium monoacetylacetonate, and zirconium. Examples include ethyl acetoacetate.
- organic titanium compound that can be used as the organic polyvalent metal compound of component (D) include tetra-i-propoxy titanium, tetra-n-butoxy titanium, tetrakis (2-ethylhexyloxy) titanium, and titanium-i.
- -Propoxyoctylene glycolate di-i-propoxy bis (acetylacetonato) titanium, propanedioxytitanium bis (ethyl acetate), propanedioxytitanium bis (ethylacetoacetate), tri-n-butoxytitanium monostearate, Di-i-propoxytitanium distearate, titanium stearate, di-i-propoxytitanium diisostearate, (2-n-butoxycarbonylbenzoyloxy) tributoxytitanium, and di-n-butoxy-bis (triethanol) Ami G) can be mentioned, such as titanium.
- organic polyvalent metal compound of the above component (D) one or a mixture of two or more of these can be used.
- the compounding amount of the organic polyvalent metal compound of the component (D) is 0.01 parts by mass or more, preferably 0 from the viewpoint of obtaining the effect of the component (D) with respect to 100 parts by mass of the component (A). 0.03 part by mass or more.
- the compounding amount of the organic polyvalent metal compound of the component (D) is 0.5 parts by mass or less, preferably 0.3 parts by mass or less, from the viewpoint of improving the heat-resistant adhesion.
- the compounding amount of the organic polyvalent metal compound of the component (D) is usually 0.01 parts by mass or more and 0.5 parts by mass or less, preferably 0.01 parts by mass with respect to 100 parts by mass of the component (A). Part to 0.3 part by weight, 0.03 part to 0.5 part by weight, or 0.03 part to 0.3 part by weight.
- an optional component other than the above components (A) to (D) can be further included as desired as long as it does not contradict the purpose of the present invention.
- the optional component include a photopolymerization initiator, a compound having two or more isocyanate groups in one molecule, an epoxy resin curing accelerator, an antistatic agent, a surfactant, a leveling agent, a thixotropic agent, and an antifouling agent.
- additives such as a colorant, a printability improver, an antioxidant, a weather resistance stabilizer, a light resistance stabilizer, an ultraviolet absorber, a heat stabilizer, a pigment, and a filler.
- the amount of the optional component is usually about 0.01 to 10 parts by mass with 100 parts by mass of the component (A).
- Preferred examples of the optional component include an epoxy resin curing accelerator.
- the reactivity of the component (C) is controlled by using the epoxy resin curing accelerator in an amount of usually 1 to 200 parts by weight, preferably about 10 to 100 parts by weight with respect to 100 parts by weight of the component (C). be able to.
- epoxy resin curing accelerator examples include 2-methylimidazole, 2-ethylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 2-phenyl-4-methylimidazole, 2-phenyl-4- Imidazole compounds such as methyl-5-hydroxymethylimidazole and 2-phenyl-4,5-dihydroxymethylimidazole, and derivatives thereof; 1,8-diazabicyclo [5,4,0] -7-undecene, 1,5 -Diazabicyclo [4,3,0] -5-nonene, and derivatives thereof (for example, their carboxylates, sulfonates, phenol salts, and phenol novolac resin salts); triphenylphosphine, tributylphosphine, tris (P-Methylphenyl) phosphine, Tris Triorganophosphine compounds such as p-methoxyphenyl) phosphine and tris (p-
- the decorative sheet of the present invention is characterized by having a layer containing the pressure-sensitive adhesive of the present invention.
- the decorative sheet of the present invention usually has a base material layer on which a layer containing this pressure-sensitive adhesive is formed.
- the base material layer is not particularly limited with respect to the material, the laminated structure, and the thickness as long as a layer containing an adhesive can be formed thereon.
- the decorative sheet of the present invention is usually not limited except that it has a layer containing the pressure-sensitive adhesive of the present invention on the side of the panel substrate that is bonded to the glass or transparent resin sheet, and has an arbitrary layer configuration. Can do.
- the base material layer is a resin film layer such as a transparent resin film or a colored resin film.
- the first aspect is a decorative sheet that constitutes a front panel by being attached to the back side of a panel substrate made of glass or a transparent resin sheet, and is a transparent resin that is a substrate layer It has the layer containing the adhesive of this invention on the surface of the front side (bonding surface side with the said panel base material) of a film directly or via an anchor coat.
- the thickness of the layer containing the adhesive of this embodiment is not particularly limited, but may be usually 15 ⁇ m or more, preferably 20 ⁇ m or more from the viewpoint of adhesive strength.
- the thickness of the layer containing the pressure-sensitive adhesive is usually 100 ⁇ m or less, preferably 60 ⁇ m or less, from the viewpoint of thinning.
- the thickness of the layer containing the pressure-sensitive adhesive of this embodiment is usually 15 ⁇ m or more and 100 ⁇ m or less, preferably 15 ⁇ m or more and 60 ⁇ m or less, 20 ⁇ m or more and 100 ⁇ m or less, and 20 ⁇ m or more and 60 ⁇ m or less.
- the method for forming the layer containing the pressure-sensitive adhesive of this embodiment on the front surface of the transparent resin film is not limited, and a known web coating method can be used. Examples of the method include roll coating, gravure coating, reverse coating, roll brushing, spray coating, air knife coating, and die coating. Further, when the pressure-sensitive adhesive layer is formed, the pressure-sensitive adhesive is diluted to a concentration at which it can be easily applied, so that a known dilution solvent can be used if desired.
- diluting solvent examples include 1-methoxy-2-propanol, isopropanol, ethyl acetate, n-butyl acetate, toluene, methyl ethyl ketone, methyl isobutyl ketone, diacetone alcohol, and acetone.
- anchor coating agent for forming the anchor coat known ones such as polyester, acrylic, polyurethane, acrylic urethane, and polyester urethane can be used.
- the method for forming the anchor coat using the anchor coat agent is not particularly limited, and a known web coating method can be used. Specific examples include roll coating, gravure coating, reverse coating, roll brushing, spray coating, air knife coating, and die coating.
- the thickness of the anchor coat is usually about 0.1 to 5 ⁇ m, preferably 0.5 to 2 ⁇ m.
- the transparent resin film is not limited, and any transparent resin film can be used.
- the transparent resin film include polyester resins such as aromatic polyester and aliphatic polyester; acrylic resins; polycarbonate resins; polyolefin resins such as polyethylene, polypropylene, and polymethylpentene; cellophane, triacetylcellulose, and diacetyl.
- Cellulose resins such as cellulose and acetyl cellulose butyrate; polystyrene, acrylonitrile / butadiene / styrene copolymer resin (ABS resin), styrene / ethylene / butadiene / styrene copolymer, styrene / ethylene / propylene / styrene copolymer, and Styrene resins such as styrene / ethylene / ethylene / propylene / styrene copolymers; polyvinyl chloride resins; polyvinylidene chloride resins; polyvinylidene fluoride Motokei resin; Other, polyvinyl alcohol, ethylene vinyl alcohol, polyether ether ketone, nylon, polyamide, polyimide, polyurethane, polyether imide, polysulfone, polyether sulfone and the like. These films include unstretched films
- the lamination method is not limited and can be laminated by any method.
- dry lamination or heat lamination is performed; each constituent material is melted by an extruder, and T-die co-rotation is performed by a feed block method, a multi-manifold method, or a stack plate method.
- a method of obtaining a laminated film by extrusion an extrusion laminating method in which at least one resin film is obtained by an arbitrary method and then another resin film is melt-extruded on the resin film; an melt-extrusion on an arbitrary film substrate; or Examples include a method of applying and drying a paint containing a constituent material and a solvent, peeling the formed resin film from the film substrate and transferring it onto another resin film, and a method of combining two or more of these. be able to.
- an embossing process may be performed between arbitrary layers as desired in order to enhance the design feeling.
- a printed layer may be provided on the front side of the transparent resin film (on the side of the bonding surface with the panel substrate) to enhance the design feeling, if desired.
- a printing layer may be provided between arbitrary layers in order to enhance the design feeling if desired.
- the printing layer can be formed by printing an arbitrary pattern using an arbitrary ink and an arbitrary printing machine. At this time, from the viewpoint of further enhancing the sense of depth, printing may be provided partially or using a transparent ink. Further, the print layer is not limited to 1, and may be 2 or more.
- a colored resin film may be further laminated on the surface of the transparent resin film on the back side (the side opposite to the bonding surface with the panel base material).
- the design by the color of the said colored resin film can be provided by laminating
- laminating the colored resin film it is possible to conceal what is present on the back side of the decorative sheet (for example, foam insulation).
- the colored resin film is not limited, and any colored resin film can be used.
- the colored resin film include polyester resins such as aromatic polyester and aliphatic polyester; acrylic resins; polycarbonate resins; poly (meth) acrylimide resins; polyolefins such as polyethylene, polypropylene, and polymethylpentene.
- Cellulosic resin Cellulosic resin
- Cellulosic resin such as cellophane, triacetylcellulose, diacetylcellulose, and acetylcellulose butyrate
- polystyrene acrylonitrile / butadiene / styrene copolymer resin (ABS resin), styrene / ethylene / butadiene / styrene copolymer, styrene ⁇ Styrene resins such as ethylene / propylene / styrene copolymers and styrene / ethylene / ethylene / propylene / styrene copolymers; polyvinyl chloride resins; polyvinyl chloride Denic resins; fluorinated resins such as polyvinylidene fluoride; other examples include polyvinyl alcohol, ethylene vinyl alcohol, polyetheretherketone, nylon, polyamide, polyimide, polyurethan
- a printing layer may be provided between the transparent resin film and the colored resin film to enhance the design feeling if desired.
- the said printing layer can be provided in order to provide high designability to the decorative sheet of this invention.
- the printing layer can be formed by printing an arbitrary pattern using an arbitrary ink and an arbitrary printing machine. Moreover, you may form the said printing layer as a concealing layer instead of the said colored resin film.
- Printing can be carried out directly or via an anchor coat on the back surface of the transparent resin film or on the front surface of the colored resin film, either entirely or partially.
- the patterns include metal-like patterns such as hairlines, wood grain patterns, stone patterns imitating the surface of rocks such as marble, fabric patterns imitating cloth and cloth-like patterns, tiled patterns, brickwork patterns, parquet patterns, And patchwork.
- As printing ink what mixed the pigment, the solvent, the stabilizer, the plasticizer, the catalyst, the hardening
- binder examples include polyurethane resins, vinyl chloride / vinyl acetate copolymer resins, vinyl chloride / vinyl acetate / acrylic copolymer resins, chlorinated polypropylene resins, acrylic resins, polyester resins, polyamides. Resins such as resin, butyral resin, polystyrene resin, nitrocellulose resin, and cellulose acetate resin, and these resin compositions can be used. Moreover, in order to give a metallic design, aluminum, tin, titanium, indium and oxides thereof are directly or via an anchor coat on the back surface of the transparent resin sheet or the colored resin film. The entire surface or a part of the surface may be deposited by a known method.
- the lamination of the transparent resin film and the colored resin film is not particularly limited, and can be performed by any method.
- methods such as thermal lamination and dry lamination can be exemplified.
- the thickness of the decorative sheet according to this embodiment is not particularly limited, but may be usually 25 ⁇ m or more, preferably 35 ⁇ m or more, more preferably 45 ⁇ m or more from the viewpoint of imparting a scattering prevention function.
- the thickness of the decorative sheet according to this embodiment may be usually 25 ⁇ m or more, preferably 50 ⁇ m or more, more preferably 100 ⁇ m or more, from the viewpoint of more reliably eliminating the above-mentioned inconvenience related to the dent.
- the thickness of the decorative sheet according to this embodiment is usually 1500 ⁇ m or less, preferably 800 ⁇ m or less, and more preferably 400 ⁇ m or less, from the viewpoint of meeting the demand for thinning the article.
- the thickness of the decorative sheet according to this embodiment is usually 25 ⁇ m or more and 1500 ⁇ m or less, alternatively 25 ⁇ m or more and 800 ⁇ m or less, 25 ⁇ m or more and 400 ⁇ m or less, 35 ⁇ m or more and 1500 ⁇ m or less, 35 ⁇ m or more and 800 ⁇ m or less, 35 ⁇ m or more and 400 ⁇ m or less, 45 ⁇ m or more and 1500 ⁇ m or less, It may be 45 to 800 ⁇ m, 45 to 400 ⁇ m, 50 to 1500 ⁇ m, 50 to 800 ⁇ m, 50 to 400 ⁇ m, 100 to 1500 ⁇ m, 100 to 800 ⁇ m, or 100 to 400 ⁇ m.
- the second aspect is a decorative sheet that constitutes a front panel by being attached to the back side of a panel substrate made of glass or a transparent resin sheet, and is a colored resin that is a substrate layer It has the layer containing the adhesive of this invention on the surface of the front side (bonding surface side with the said panel base material) of a film directly or via an anchor coat.
- a design can be given by the color of the colored resin film.
- the thing for example, foam heat insulating material etc.
- the thing which exists in a back side can be concealed with the color of the said colored resin film.
- the colored resin film is not limited, and any colored resin film can be used. Specific examples of the colored resin film are as described above for the first aspect. As the colored resin film, one kind of these or one or more kinds of laminated films can be used.
- the thickness of the layer containing the adhesive of this embodiment is not particularly limited, but may be usually 15 ⁇ m or more, preferably 20 ⁇ m or more from the viewpoint of adhesive strength.
- the thickness of the layer containing the pressure-sensitive adhesive is usually 100 ⁇ m or less, preferably 60 ⁇ m or less, from the viewpoint of thinning.
- the thickness of the layer containing the pressure-sensitive adhesive of this embodiment is usually 15 ⁇ m or more and 100 ⁇ m or less, preferably 15 ⁇ m or more and 60 ⁇ m or less, 20 ⁇ m or more and 100 ⁇ m or less, and 20 ⁇ m or more and 60 ⁇ m or less.
- the method of forming the layer containing the pressure-sensitive adhesive of this embodiment directly or via an anchor coat on the front surface of the colored resin film is not limited, and a known web coating method can be used. . About a specific method, it is the same as that of the case where the layer containing an adhesive is formed on the surface at the front side of the said transparent resin film in a 1st aspect.
- An arbitrary printed layer may be provided on the entire surface or a part of the front surface of the colored resin film.
- the said printing layer can be provided in order to provide high designability to the decorative sheet of this invention.
- the printing layer can be formed by printing an arbitrary pattern using an arbitrary ink and an arbitrary printing machine. The method for providing the print layer is as described above.
- the thickness of the decorative sheet of the second aspect is not particularly limited and is arbitrary. About the range of the preferable thickness of the decorative sheet of this aspect, it is the same as that of what was mentioned above in description of a 1st aspect.
- the third aspect is a decorative sheet that constitutes a front panel by being attached to the front side of a panel substrate made of glass or a transparent resin sheet, and is transparent for these panel substrates.
- the pressure-sensitive adhesive of the present invention is preferably directly or via an anchor coat on the back surface side of the transparent resin film which is a base material layer (the bonding surface side with the panel base material). It has a layer containing an agent. By sticking the decorative sheet to the front side of the glass panel base material, the scattering prevention function is easily developed. By attaching the decorative sheet to the front side of the panel substrate made of a transparent resin sheet, it is possible to impart an effect of preventing scratches.
- the transparent resin film is not limited, and any transparent resin film can be used. Specific examples thereof are as described above for the first aspect. As said transparent resin film, these 1 type or these 1 or more types of laminated
- the thickness of the layer containing the adhesive of this embodiment is not particularly limited, but may be usually 15 ⁇ m or more, preferably 20 ⁇ m or more from the viewpoint of adhesive strength.
- the thickness of the layer containing the pressure-sensitive adhesive is usually 100 ⁇ m or less, preferably 60 ⁇ m or less, from the viewpoint of thinning.
- the thickness of the layer containing the pressure-sensitive adhesive of this embodiment is usually 15 ⁇ m or more and 100 ⁇ m or less, preferably 15 ⁇ m or more and 60 ⁇ m or less, 20 ⁇ m or more and 100 ⁇ m or less, and 20 ⁇ m or more and 60 ⁇ m or less.
- the method of forming the layer containing the pressure-sensitive adhesive of the present invention directly or via an anchor coat on the surface of the transparent resin film on the back side (bonding surface side with the panel substrate) is not limited, Known web coating methods can be used. About a specific method, it is the same as that of the case where the layer containing an adhesive is formed on the surface at the front side of the said transparent resin film in a 1st aspect.
- An arbitrary print layer may be provided on the front surface of the transparent resin film and / or on the back surface.
- the said printing layer can be provided in order to provide high designability to the decorative sheet of this invention.
- the printing layer can be formed by printing an arbitrary pattern using an arbitrary ink and an arbitrary printing machine. In order to utilize the transparency of the front panel as a design, the printed layer is preferably provided partially or using a transparent ink. The method for providing the print layer is as described above.
- the surface protective layer can enhance the damage resistance and solvent resistance of the decorative sheet.
- the surface protective layer examples include resin coatings such as hard coats and thermoplastic resin coats.
- resin coatings such as hard coats and thermoplastic resin coats.
- the coating material used for forming the resin coating film those having high transparency and high gloss are preferable from the viewpoint of design.
- paint used for forming the hard coat those having high transparency and high gloss are preferable from the viewpoint of design.
- a hard coat-forming coating material include an active energy ray-curable resin composition.
- the active energy ray-curable resin composition comprises an active energy ray-curable resin together with a compound having two or more isocyanate groups (—N ⁇ C ⁇ O) and / or a photopolymerization initiator in one molecule. Can be mentioned.
- the active energy ray-curable resin composition can be polymerized and cured by active energy rays such as ultraviolet rays and electron beams to form a hard coat.
- active energy ray-curable resin examples include polyurethane (meth) acrylate, polyester (meth) acrylate, polyacryl (meth) acrylate, epoxy (meth) acrylate, polyalkylene glycol poly (meth) acrylate, and polyether.
- (Meth) acryloyl group-containing prepolymer or oligomer such as (meth) acrylate; methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate , Lauryl (meth) acrylate, isobornyl (meth) acrylate, dicyclopentenyl (meth) acrylate, dicyclopentenyloxyethyl (meth) acrylate, phenyl (meth) acrylate , Phenyl cellosolve (meth) acrylate, 2-methoxyethyl (meth) acrylate, hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, 2-acryloyloxyethyl hydrogen phthalate, dimethylaminoethyl (meth
- (meth) acrylate means acrylate or methacrylate.
- Examples of the compound having two or more isocyanate groups in one molecule include methylene bis-4-cyclohexyl isocyanate; trimethylol propane adduct of tolylene diisocyanate, trimethylol propane adduct of hexamethylene diisocyanate, trimethylol of isophorone diisocyanate.
- Polyisocyanates such as propane adduct, isocyanurate of tolylene diisocyanate, isocyanurate of hexamethylene diisocyanate, isocyanurate of isophorone diisocyanate, biuret of hexamethylene diisocyanate; and urethanes such as block isocyanates of the above polyisocyanates
- a crosslinking agent etc. can be mentioned.
- the compound having two or more isocyanate groups in one molecule one or a mixture of two or more thereof can be used.
- a catalyst such as dibutyltin dilaurate or dibutyltin diethylhexoate may be added as necessary.
- photopolymerization initiator examples include benzophenone, methyl-o-benzoylbenzoate, 4-methylbenzophenone, 4,4′-bis (diethylamino) benzophenone, methyl o-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl.
- Benzophenone compounds such as -4'-methyldiphenyl sulfide, 3,3 ', 4,4'-tetra (tert-butylperoxycarbonyl) benzophenone, 2,4,6-trimethylbenzophenone; benzoin, benzoin methyl ether, benzoin Benzoin compounds such as ethyl ether, benzoin isopropyl ether, benzyl methyl ketal; acetophenone, 2,2-dimethoxy-2-phenylacetophenone, 1-hydroxycyclohexyl phenyl ketone Acetophenone compounds; anthraquinone compounds such as methylanthraquinone, 2-ethylanthraquinone, 2-amylanthraquinone; thioxanthone compounds such as thioxanthone, 2,4-diethylthioxanthone, 2,4-diisopropylthioxanthone; alkyls such
- the active energy ray-curable resin composition may contain an antistatic agent, a surfactant, a leveling agent, a thixotropic agent, a stain-preventing agent, a printability improving agent, an antioxidant, and a stable weather resistance, if desired.
- an antistatic agent such as an agent, a light resistance stabilizer, a ultraviolet absorber, a heat stabilizer, a coloring agent, and a filler, may be included.
- fine particles having an average particle diameter of 1 nm to 300 nm can be mentioned as a preferable one.
- the hardness of the hard coat can be increased by using the fine particles in an amount of 1 to 300 parts by weight, preferably 20 to 100 parts by weight, based on 100 parts by weight of the active energy ray-curable resin component.
- Both inorganic fine particles and organic fine particles can be used as the fine particles.
- the inorganic fine particles include silica (silicon dioxide); metal oxide fine particles such as aluminum oxide, zirconia, titania, zinc oxide, germanium oxide, indium oxide, tin oxide, indium tin oxide, antimony oxide, and cerium oxide; Metal fluoride fine particles such as magnesium fluoride and sodium fluoride; metal fine particles; metal sulfide fine particles; metal nitride fine particles.
- the organic fine particles include resin beads such as a styrene resin, an acrylic resin, a polycarbonate resin, an ethylene resin, and a cured resin of an amino compound and formaldehyde. These can be used alone or in combination of two or more.
- the surface of the fine particles is treated with a silane coupling agent such as vinylsilane or aminosilane; a titanate coupling agent; aluminum Nate coupling agents; Organic compounds having an ethylenically unsaturated bond group such as (meth) acryloyl group, vinyl group and allyl group and reactive functional groups such as epoxy group; Surface treatment agents such as fatty acids and fatty acid metal salts You may use what was processed by.
- a silane coupling agent such as vinylsilane or aminosilane
- a titanate coupling agent such as aluminum Nate coupling agents
- Organic compounds having an ethylenically unsaturated bond group such as (meth) acryloyl group, vinyl group and allyl group and reactive functional groups such as epoxy group
- Surface treatment agents such as fatty acids and fatty acid metal salts You may use what was processed by.
- silica fine particles are preferable in order to obtain a hard coat with higher hardness.
- Silica fine particles are more preferred.
- Examples of commercially available silica fine particles include Snowtex (trade name) manufactured by Nissan Chemical Industries, Ltd. and Quattron (trade name) manufactured by Fuso Chemical Industries, Ltd.
- the average particle size of the fine particles is usually 300 nm or less, preferably 200 nm or less, and more preferably 120 nm or less, from the viewpoint of maintaining the transparency of the hard coat and ensuring the effect of improving the hardness of the hard coat. Good. On the other hand, there is no particular lower limit on the average particle size, but normally available particles are at most about 1 nm at most.
- the average particle size of the fine particles is the cumulative value from the smallest particle size in a particle size distribution curve measured using a laser diffraction / scattering particle size analyzer “MT3200II” (trade name) manufactured by Nikkiso Co., Ltd. Is a particle size of 50% by mass.
- the active energy ray-curable resin composition is diluted to a concentration that allows easy application, it may contain a solvent as desired.
- the solvent is not particularly limited as long as it does not react with the components of the curable resin composition and other optional components or does not catalyze (promote) the self-reaction (including deterioration reaction) of these components.
- Examples of the solvent include 1-methoxy-2-propanol, isopropanol, ethyl acetate, n-butyl acetate, toluene, methyl ethyl ketone, methyl isobutyl ketone, diacetone alcohol, and acetone. One or more of these may be used as the solvent.
- the active energy ray-curable resin composition can be obtained by mixing and stirring these components.
- thermoplastic resin coat examples include a coating prepared by dissolving a thermoplastic resin in an organic solvent.
- a thermoplastic resin coat can be formed by applying and drying the above-mentioned paint for forming a thermoplastic resin coat.
- thermoplastic resin examples include urethane resin, polyester resin, acrylic resin, vinyl acetate resin, vinyl chloride resin, silicon resin, and fluorine resin.
- urethane resin, polyester resin, and acrylic resin are preferable.
- a thermoplastic resin these 1 type, or 2 or more types of mixtures can be used.
- organic solvent examples include 1-methoxy-2-propanol, ethyl acetate, n-butyl acetate, toluene, methyl ethyl ketone, methyl isobutyl ketone, diacetone alcohol, and acetone.
- these 1 type, or 2 or more types of mixtures can be used.
- the thermoplastic resin coat-forming coating material includes, as desired, an antistatic agent, a surfactant, a leveling agent, a thixotropic agent, a stain prevention agent, a printability improver, an antioxidant, a weather resistance stabilizer, You may contain 1 type, or 2 or more types of additives, such as a light resistance stabilizer, a ultraviolet absorber, a heat stabilizer, a coloring agent, and a filler.
- the above-mentioned paint for forming a thermoplastic resin coat can be obtained by mixing and stirring these components.
- a hard coat or a transparent anchor coat is directly or via a transparent anchor coat on the front surface of the transparent resin film.
- a resin coating such as a thermoplastic resin coat can be formed.
- the method for forming such a resin coating film is not particularly limited, and a known web coating method can be used. Examples of the method include methods such as roll coating, gravure coating, reverse coating, roll brushing, spray coating, air knife coating, and die coating.
- the thickness of the resin coating film is not particularly limited, but may be preferably 0.5 ⁇ m or more, more preferably 5 ⁇ m or more, from the viewpoints of resistance to external damage and solvent. On the other hand, from the viewpoint of web handling properties, the thickness of the resin coating film is preferably 100 ⁇ m or less, and more preferably 50 ⁇ m or less. The thickness of the resin coating film may be preferably 0.5 ⁇ m to 100 ⁇ m, 0.5 ⁇ m to 50 ⁇ m, 5 ⁇ m to 100 ⁇ m, or 5 ⁇ m to 50 ⁇ m.
- the anchor coating agent used for forming the transparent anchor coat is not limited except that it is transparent, and any anchor coating agent can be used.
- the anchor coating agent include known ones such as polyester, acrylic, polyurethane, acrylic urethane, and polyester urethane. One or more of these can be used as the anchor coating agent.
- the method for forming the transparent anchor coat using the anchor coating agent is not particularly limited, and a known web coating method can be used. Examples of the method include methods such as roll coating, gravure coating, reverse coating, roll brushing, spray coating, air knife coating, and die coating.
- the thickness of the transparent anchor coat is usually about 0.1 to 5 ⁇ m, preferably 0.5 to 2 ⁇ m.
- a resin film having high transparency and high gloss such as vinylidene fluoride resin film and biaxially stretched polyethylene terephthalate film, and having excellent scratch resistance and solvent resistance is transparent. You may laminate
- the above-mentioned vinylidene fluoride resin film can be obtained by forming a vinylidene fluoride resin film by an arbitrary method.
- the vinylidene fluoride-based resin include vinylidene fluoride homopolymers and copolymers containing 70 mol% or more of structural units derived from vinylidene fluoride.
- the vinylidene fluoride resin one kind or a mixture of two or more kinds thereof can be used.
- the monomer copolymerizable with vinylidene fluoride include ethylene tetrafluoride, propylene hexafluoride, ethylene trifluoride, ethylene trifluoride chloride, and vinyl fluoride.
- the vinylidene fluoride resin includes a lubricant, an antioxidant, a weathering stabilizer, a thermal stabilizer, a release agent, an antistatic agent, a surfactant, a nucleus. Agents, colorants, plasticizers and the like can be included.
- the melting point of these vinylidene fluoride resins is usually in the range of 145 to 180 ° C. This melting point is preferably 150 to 170 ° C. from the viewpoint of processability.
- a DiamondaDSC type differential scanning calorimeter of Perkin Elmer Japan Co., Ltd. is used, and the sample is held at 230 ° C. for 5 minutes, and then cooled to ⁇ 50 ° C. at a temperature decreasing rate of 10 ° C./min.
- the melting point is defined as the highest peak in the melting curve obtained by performing DSC measurement with a temperature program of holding at -50 ° C for 5 minutes and then heating to 230 ° C at a heating rate of 10 ° C / min. did.
- the method for laminating the transparent resin film and the vinylidene fluoride resin film is not limited and can be laminated by any method.
- a method in which the transparent resin film and the vinylidene fluoride resin film are obtained by an arbitrary method, followed by dry lamination or heat lamination; each constituent material is melted in an extruder, and a feed block method or a multi-manifold A method of obtaining a laminated film by T-die coextrusion by the method or stack plate method; an extrusion laminate in which one of the transparent resin film or the vinylidene fluoride resin film is obtained by an arbitrary method, and the other is melt extruded The method etc. can be mentioned.
- the biaxially stretched polyethylene terephthalate film is widely commercially available, and any film can be used.
- the method for laminating the transparent resin film and the biaxially stretched polyethylene terephthalate film is not limited and can be laminated by any method.
- the resin coating film may be formed directly or via an anchor coat on the biaxially stretched polyethylene terephthalate film or the vinylidene fluoride resin film.
- the initial adhesive strength with the glass of the decorative sheet of the present invention is preferably 15 N / 25 mm or more, more preferably 20 N / 25 mm or more, and further preferably 25 N / 25 mm or more. Further, the adhesive strength with glass is preferably 50 N / 25 mm or less, more preferably 45 N / 25 mm or less in consideration of reworkability.
- the adhesion strength with the glass is a value measured according to the following test (i).
- the initial adhesion strength with this glass is preferably 15 N / 25 mm to 50 N / 25 mm, 15 N / 25 mm to 45 N / 25 mm, 20 N / 25 mm to 50 N / 25 mm, 20 N / 25 mm to 45 N / 25 mm, 25 N / 25 mm or more and 50 N / 25 mm or less, or 25 N / 25 mm or more and 45 N / 25 mm or less.
- the decorative sheet of the present invention has an adhesion strength with glass of preferably 5 N / 25 mm or more, more preferably 10 N / 25 mm or more, and further preferably 15 N / 25 mm or more after heat treatment at a temperature of 60 ° C. for 10 minutes.
- the adhesion strength with the glass after the heat treatment at a temperature of 60 ° C. for 10 minutes is a value measured according to the following test (ii).
- the decorative sheet of the present invention is exposed to an environment where the adhesive strength residual ratio with glass is ⁇ 30 ° C. and a relative humidity of 90% for 6 hours, and then exposed to an environment of a temperature of 60 ° C. and a relative humidity of 90% for 6 hours. It is preferably 70% or more, more preferably 80% or more, and still more preferably 90% or more after the heat cycle treatment in which the treatment is one cycle for a total of 3 cycles. There is no particular upper limit on the adhesive strength residual rate.
- the adhesion strength residual ratio with the glass after the heat cycle treatment under the above conditions is a value measured according to the following measurement method (iii).
- the decorative sheet of the present invention has an adhesion strength with glass of 5 N / 25 mm or more, 10 N / 25 mm or more, or 15 N / 25 mm or more after heat treatment at 60 ° C. for 10 minutes, and adhesion strength with glass.
- the decorative sheet of the present invention has an adhesive strength residual ratio of 5% by mass and a sodium hydroxide aqueous solution at a temperature of 25 ° C., after immersion for 24 hours, preferably 70% or more, more preferably 80%. More preferably, it is 90% or more. There is no particular upper limit on the adhesive strength residual rate.
- the adhesion strength residual ratio with the glass after the immersion treatment under the above conditions is a value measured according to the following test (iv).
- the decorative sheet of the present invention has an adhesion strength with glass of 5 N / 25 mm or more, 10 N / 25 mm or more, or 15 N / 25 mm or more after heat treatment at 60 ° C. for 10 minutes, and adhesion strength with glass.
- a heat cycle in which the remaining rate is -30 ° C and 90% relative humidity for 6 hours followed by 6 hours of exposure to 60 ° C and 90% relative humidity for a total of 3 cycles.
- the treatment After the treatment, it is immersed in a sodium hydroxide aqueous solution of 70% or more, 80% or more, or 90% or more, and a residual strength of adhesion to glass of 5% by mass and a temperature of 25 ° C. for 24 hours. Later, it is preferably 70% or more, 80% or more, or 90% or more.
- the decorative sheet of the present invention is an initial stage with at least one resin selected from the group consisting of acrylic resins, aromatic polycarbonate resins, and polyester resins other than acrylic resins and aromatic polycarbonate resins. Is preferably 15 N / 25 mm or more, more preferably 20 N / 25 mm or more, and still more preferably 25 N / 25 mm or more.
- the initial adhesion strength with the resin is preferably 50 N / 25 mm or less, more preferably 45 N / 25 mm or less, considering reworkability.
- the adhesion strength with the resin is a value measured according to the following test (i).
- the initial adhesion strength with this resin is preferably 15 N / 25 mm to 50 N / 25 mm, 15 N / 25 mm to 45 N / 25 mm, 20 N / 25 mm to 50 N / 25 mm, 20 N / 25 mm to 45 N / 25 mm, 25 N / 25 mm or more and 50 N / 25 mm or less, or 25 N / 25 mm or more and 45 N / 25 mm or less.
- Examples included in the “acrylic resin”, “aromatic polycarbonate resin” and “polyester resin other than acrylic resin and aromatic polycarbonate resin” referred to here are the sections of the transparent resin sheet constituting the panel. As described below.
- the decorative sheet of the present invention is in close contact with at least one resin selected from the group consisting of acrylic resins, aromatic polycarbonate resins, and polyester resins other than acrylic resins and aromatic polycarbonate resins.
- the strength is preferably 5 N / 25 mm or more, more preferably 10 N / 25 mm or more, and further preferably 15 N / 25 mm or more after heat treatment at a temperature of 60 ° C. for 10 minutes.
- the adhesion strength with the resin after heat treatment at a temperature of 60 ° C. for 10 minutes is a value measured according to the following test (ii).
- the decorative sheet of the present invention is in close contact with at least one resin selected from the group consisting of acrylic resins, aromatic polycarbonate resins, and polyester resins other than acrylic resins and aromatic polycarbonate resins.
- After the cycle treatment it is preferably 70% or more, more preferably 80% or more, and further preferably 90% or more.
- the adhesion strength residual ratio with the resin after the heat cycle treatment under the above conditions is a value measured according to the following measurement method (iii).
- the decorative sheet of the present invention has an adhesion strength with the resin of 5 N / 25 mm or more, 10 N / 25 mm or more, or 15 N / 25 mm or more after heat treatment at a temperature of 60 ° C. for 10 minutes, and A total of 3 cycles are performed, with one cycle consisting of 6 hours exposure to an environment with a residual adhesion strength of -30 ° C and 90% relative humidity, followed by 6 hours exposure to an environment of 60 ° C and 90% relative humidity. After heat cycle treatment, it is preferably 70% or more, 80% or more, or 90% or more.
- the decorative sheet of the present invention is in close contact with at least one resin selected from the group consisting of acrylic resins, aromatic polycarbonate resins, and polyester resins other than acrylic resins and aromatic polycarbonate resins.
- the strength residual ratio is preferably 70% or more, more preferably 80% or more, and still more preferably 90% or more after the immersion treatment for 24 hours in an aqueous sodium hydroxide solution having a concentration of 5% by mass and a temperature of 25 ° C.
- the adhesive strength residual ratio with the resin after the immersion treatment under the above conditions is a value measured according to the following test (iv).
- the decorative sheet of the present invention has an adhesion strength with the resin of 5 N / 25 mm or more, 10 N / 25 mm or more, or 15 N / 25 mm or more after heat treatment at a temperature of 60 ° C. for 10 minutes, and A total of 3 cycles are performed, with one cycle consisting of 6 hours exposure to an environment with a residual adhesion strength of -30 ° C and 90% relative humidity, followed by 6 hours exposure to an environment of 60 ° C and 90% relative humidity.
- heat cycle treatment it is 70% or more, 80% or more, or 90% or more, and the residual strength of adhesion with the resin is 5% by mass at a temperature of 25 ° C. in a sodium hydroxide aqueous solution for 24 hours.
- the immersion treatment it is preferably 70% or more, 80% or more, or 90% or more.
- Panel Front panel of the present invention is a panel that constitutes the front of the door body for opening and closing a front portion of the article body.
- the front panel of the present invention has a structure in which the decorative sheet of the present invention is bonded to a panel substrate made of glass or a transparent resin sheet.
- the decorative sheet is composed of a layer containing the pressure-sensitive adhesive of the present invention and a base material layer comprising at least one layer (typically a transparent resin film or A resin film such as a colored resin film).
- the front panel of the present invention is, in order from the front side of the article, ( ⁇ ) a layer of glass or a transparent resin sheet; ( ⁇ ) a layer containing the pressure-sensitive adhesive of the present invention; and ( ⁇ ) a resin film.
- the front panel of the present invention comprises, in order from the front side of the article, ( ⁇ ) a layer of a resin film; ( ⁇ ) a layer containing the pressure-sensitive adhesive of the present invention; and ( ⁇ ) glass or a transparent resin.
- the layer of the ( ⁇ ) resin film may be replaced with a layer of another material such as glass, which is not limited.
- the above-mentioned transparent resin sheet functions to retain mechanical properties required for the front panel and to impart a glass-like design to the front panel. Therefore, it is preferable that the transparent resin sheet has high transparency and is not colored.
- the transparent resin sheet has a total light transmittance (measured by using a turbidimeter “NDH2000” (trade name) manufactured by Nippon Denshoku Industries Co., Ltd. according to JIS K 7361-1: 1997), preferably 80% or more. More preferably, it is 85% or more, and still more preferably 90% or more. A higher total light transmittance is preferable.
- NDH2000 turbidimeter
- the transparent resin sheet has a haze (measured using a turbidimeter “NDH2000” (trade name) of Nippon Denshoku Industries Co., Ltd. according to JIS K 7136: 2000), preferably 5% or less, more preferably 3 % Or less, more preferably 2% or less. The lower the haze, the better.
- the above-mentioned transparent resin sheet has a yellowness index (measured using a chromaticity meter “SolidSpec-3700” (trade name) manufactured by Shimadzu Corporation according to JIS K 7105: 1981), preferably 3 or less. Is 2 or less, more preferably 1 or less. The lower the yellowness index, the better.
- the thickness of the transparent resin sheet is usually 0.5 mm or more, preferably 0.8 mm or more, more preferably 1.2 mm or more from the viewpoint of maintaining mechanical properties and imparting a deep design.
- the thickness of the transparent resin sheet is usually 10 mm or less, preferably 6 mm or less, and more preferably 3 mm or less, from the viewpoint of meeting the demand for lighter articles.
- the thickness of the transparent resin sheet is usually 0.5 mm to 10 mm, preferably 0.5 mm to 6 mm, 0.5 mm to 3 mm, 0.8 mm to 10 mm, 0.8 mm to 6 mm, 0.8 mm It may be 3 mm or less, 1.2 mm or more and 10 mm or less, 1.2 mm or more and 6 mm or less, or 1.2 mm or more and 3 mm or less.
- the tensile elastic modulus of the transparent resin sheet is preferably 1500 MPa or more, more preferably 1800 MPa or more, from the viewpoint of maintaining strength and rigidity necessary for the front panel. There is no particular upper limit on the tensile modulus of elasticity, but since it is a resin sheet, it is at most about 10000 MPa within the normally available range.
- the tensile elastic modulus was measured according to JIS K7127: 1999 under the conditions of specimen type 1B and a tensile speed of 50 mm / min.
- the glass transition temperature of the resin constituting the transparent resin sheet is heat resistance necessary for the front panel (including both heat resistance required for manufacturing the article and heat resistance required for using the article). From the viewpoint of maintaining the temperature, it is preferably 90 ° C. or higher, more preferably 100 ° C. or higher, still more preferably 110 ° C. or higher. In addition, when the said transparent resin sheet contains 2 or more types of resin as constituent resin, it is preferable that resin with the lowest glass transition temperature among these satisfy
- the glass transition temperature of the resin constituting the transparent resin sheet is preferably 160 ° C. or lower, more preferably 150 ° C. or lower, and still more preferably 140 ° C. or lower, from the viewpoint of processability during the manufacture of the article.
- resin with the highest glass transition temperature satisfy
- the glass transition temperature of the transparent resin sheet is a Diamond ⁇ ⁇ DSC type differential scanning calorimeter manufactured by PerkinElmer Japan Co., Ltd., and the sample is heated to 200 ° C. at a temperature rising rate of 50 ° C./min.
- the temperature program lasts for 10 minutes, then cooled to 50 ° C. at a rate of temperature drop of 20 ° C./min, held at 50 ° C. for 10 minutes, and then heated to 200 ° C. at a rate of temperature increase of 20 ° C./min.
- the transparent resin sheet is not limited, and any transparent resin sheet can be used.
- polyester resins such as aromatic polyester and aliphatic polyester; acrylic resins; polycarbonate resins; polyolefin resins such as polyethylene, polypropylene and polymethylpentene; cellophane, triacetylcellulose, diacetylcellulose, acetylcellulose butyrate, etc.
- Cellulose resin polystyrene, acrylonitrile / butadiene / styrene copolymer resin (ABS resin), styrene / ethylene / butadiene / styrene copolymer, styrene / ethylene / propylene / styrene copolymer, and styrene / ethylene / ethylene / propylene ⁇ Styrene resins such as styrene copolymers; polyvinyl chloride resins; polyvinylidene chloride resins; fluorine-containing resins such as polyvinylidene fluoride; Alcohol, ethylene vinyl alcohol, polyether ether ketone, nylon, polyamide, polyimide, polyurethane, polyether imide, polysulfone, a transparent resin sheet such as polyether sulfone. These sheets include an unstretched sheet, a uniaxially stretched sheet, and a bi
- the lamination method is not limited and can be laminated by any method.
- dry lamination or heat lamination is performed; each constituent material is melted by an extruder, and T-die co-processing by a feed block method, a multi-manifold method or a stack plate method is used.
- a method of obtaining a laminated sheet by extrusion an extrusion laminating method in which at least one resin sheet is obtained by an arbitrary method, and then another resin sheet is melt-extruded on the resin sheet; Examples include a method of applying and drying a paint containing a constituent material and a solvent, peeling the formed resin sheet from the film substrate and transferring it onto another resin sheet, and a method of combining two or more of these. be able to.
- an embossing process may be performed between arbitrary layers as desired in order to enhance the design feeling.
- a printing layer may be provided between arbitrary layers in order to enhance the design feeling if desired.
- the printing layer can be formed by printing an arbitrary pattern using an arbitrary ink and an arbitrary printing machine. At this time, from the viewpoint of further enhancing the sense of depth, printing may be provided partially or using a transparent ink. Further, the print layer is not limited to 1, and may be 2 or more.
- the transparent resin sheet from the viewpoint of mechanical properties, transparency, and non-colorability, (A1) Acrylic resin sheet; (A2) an aromatic polycarbonate resin sheet; (A3) Polyester resin sheet (excluding resin sheets formed from acrylic resins or aromatic polycarbonate resins); (A4) Any one or two or more laminated sheets of the transparent resin sheets (a1) to (a3) are preferable.
- the (a1) acrylic resin sheet mainly contains an acrylic resin such as polymethyl methacrylate and polyethyl methacrylate (usually 50% by mass or more, preferably 60% by mass or more, more preferably 70% by mass or more). It is a sheet formed from a resin.
- an acrylic resin such as polymethyl methacrylate and polyethyl methacrylate (usually 50% by mass or more, preferably 60% by mass or more, more preferably 70% by mass or more). It is a sheet formed from a resin.
- acrylic resin examples include (meth) acrylic acid ester (co) polymers, copolymers of a comonomer group containing (meth) acrylic acid esters, and modified products thereof.
- (meth) acryl means acryl or methacryl.
- the (co) polymer means a polymer or a copolymer.
- Examples of the (meth) acrylate ester (co) polymer include poly (meth) acrylate methyl, poly (meth) acrylate ethyl, poly (meth) acrylate propyl, poly (meth) acrylate butyl, ( Examples thereof include methyl (meth) acrylate / (meth) butyl acrylate copolymer, ethyl (meth) acrylate / butyl (meth) acrylate copolymer, and the like.
- Examples of the copolymer of the comonomer group including the (meth) acrylic acid ester include, for example, ethylene / (meth) methyl acrylate copolymer, styrene / (meth) methyl acrylate copolymer, vinylcyclohexane / (meth). Mention may be made, for example, of a methyl acrylate copolymer, a maleic anhydride / (meth) methyl acrylate copolymer, and an N-substituted maleimide / (meth) methyl acrylate copolymer.
- modified substance examples include a polymer in which a lactone ring structure is introduced by an intramolecular cyclization reaction; a polymer in which glutaric anhydride is introduced by an intramolecular cyclization reaction; and an imidizing agent (for example, methyl Examples thereof include a polymer having an imide structure introduced by reacting with amine, cyclohexylamine, ammonia and the like.
- acrylic resin one or a mixture of two or more of these can be used.
- the core shell rubber is usually 0 to 50 parts by mass (100 to 50 parts by mass of the acrylic resin), preferably 0 to 40 parts by mass (the above Acrylic resin (100 to 60 parts by mass), more preferably 0 to 30 parts by mass (the acrylic resin 100 to 70 parts by mass) is used. Impact resistance can be increased.
- the core shell rubber examples include methacrylic acid ester / styrene / butadiene rubber graft copolymer, acrylonitrile / styrene / butadiene rubber graft copolymer, acrylonitrile / styrene / ethylene / propylene rubber graft copolymer, and acrylonitrile / styrene / acrylic.
- examples thereof include an acid ester graft copolymer, a methacrylic acid ester / acrylic acid ester rubber graft copolymer, and a methacrylic acid ester / acrylonitrile / acrylic acid ester rubber graft copolymer.
- these 1 type, or 2 or more types of mixtures can be used.
- acrylic resins other than the acrylic resin and the core-shell rubber
- pigments inorganic fillers, organic fillers, resin fillers
- lubricants antioxidants, and weather resistance stability.
- additives such as an agent, a heat stabilizer, a release agent, an antistatic agent, a nucleating agent, and a surfactant.
- the amount of these optional components is usually 25 parts by mass or less, preferably about 0.01 to 10 parts by mass, when the total of the acrylic resin and the core-shell rubber is 100 parts by mass. is there.
- the (a2) aromatic polycarbonate resin sheet is a sheet formed of a resin mainly containing an aromatic polycarbonate resin (usually 50 mass% or more, preferably 70 mass% or more, more preferably 90 mass% or more). is there.
- aromatic polycarbonate resin examples include interfacial weight between an aromatic dihydroxy compound such as bisphenol A, dimethylbisphenol A, 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane and phosgene. Polymer obtained by legal method; ester of aromatic dihydroxy compound such as bisphenol A, dimethyl bisphenol A, 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane and diester carbonate such as diphenyl carbonate Examples thereof include a polymer obtained by an exchange reaction. As said aromatic polycarbonate-type resin, these 1 type, or 2 or more types of mixtures can be used.
- the aromatic polycarbonate resin include core-shell rubber.
- the core shell rubber is 0 to 30 parts by mass (100 to 70 parts by mass of the aromatic polycarbonate resin), preferably 0 to 10 parts by mass.
- the cutting resistance and impact resistance of the (a2) aromatic polycarbonate resin sheet can be improved.
- the core shell rubber examples include methacrylic ester / styrene / butadiene rubber graft copolymer, acrylonitrile / styrene / butadiene rubber graft copolymer, acrylonitrile / styrene / ethylene / propylene rubber graft copolymer, and acrylonitrile / styrene / acrylic.
- examples thereof include an acid ester graft copolymer, a methacrylic acid ester / acrylic acid ester rubber graft copolymer, and a methacrylic acid ester / acrylonitrile / acrylic acid ester rubber graft copolymer.
- these 1 type, or 2 or more types of mixtures can be used.
- the aromatic polycarbonate-based resin may be a thermoplastic resin other than the aromatic polycarbonate-based resin or the core-shell rubber; a pigment, an inorganic filler, an organic filler, a resin filler; Further, additives such as an antioxidant, a weather resistance stabilizer, a heat stabilizer, a release agent, an antistatic agent, and a surfactant can be further included.
- the blending amount of these optional components may usually be about 0.01 to 10 parts by mass when the total of the aromatic polycarbonate resin and the core-shell rubber is 100 parts by mass.
- the (a3) polyester resin sheet is a sheet formed of a resin mainly containing a polyester resin such as polyethylene terephthalate (usually 50 mass% or more, preferably 80 mass% or more, more preferably 90 mass% or more).
- a polyester resin such as polyethylene terephthalate (usually 50 mass% or more, preferably 80 mass% or more, more preferably 90 mass% or more).
- This polyester resin sheet includes an unstretched sheet, a uniaxially stretched sheet, and a biaxially stretched sheet. Moreover, these 1 type, or 2 or more types of laminated sheets are included.
- the (a3) polyester resin sheet is preferably mainly an amorphous or low-crystalline aromatic polyester resin (usually 50% by mass or more, preferably 80% by mass or more, more preferably 90% by mass or more). It is the sheet
- amorphous or low crystalline aromatic polyester resin examples include aromatic polyvalent carboxylic acid components such as terephthalic acid, isophthalic acid, orthophthalic acid, naphthalenedicarboxylic acid, ethylene glycol, diethylene glycol, neopentyl glycol, 1 , 2-butanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 3-methyl-1,5-pentanediol, 2-methyl-1,3-propanediol, Mention may be made of polyester copolymers with polyhydric alcohol components such as 1,4-cyclohexanedimethanol.
- aromatic polyvalent carboxylic acid components such as terephthalic acid, isophthalic acid, orthophthalic acid, naphthalenedicarboxylic acid, ethylene glycol, diethylene glycol, neopentyl glycol, 1 , 2-butanediol, 1,
- amorphous or low-crystalline aromatic polyester-based resin examples include, for example, a total sum of monomers of 100 mol%, terephthalic acid 50 mol% and ethylene glycol 30 to 40 mol%, 1,4-cyclohexanedimethanol 10 to Glycol-modified polyethylene terephthalate (PETG) containing 20 mol%; glycol-modified polycyclohexylenedimethylene terephthalate containing 50 mol% terephthalic acid, 16-21 mol% ethylene glycol and 29-34 mol% 1,4-cyclohexanedimethanol ( PCTG); acid-modified polycyclohexylenedimethylene terephthalate (PCTA) containing 25 to 49.5 mol% terephthalic acid, 0.5 to 25 mol% isophthalic acid and 50 mol% 1,4-cyclohexanedimethanol; terephthalic acid 30 ⁇ 4 Acid modified and glycol modified polyethylene terephthalate containing 5%
- the polyester-based resin can contain other components as desired, as long as the object of the present invention is not adversely affected.
- Optional components that can be included include thermoplastic resins other than polyester resins; pigments, inorganic fillers, organic fillers, resin fillers; lubricants, antioxidants, weathering stabilizers, thermal stabilizers, mold release agents, antistatic agents, And additives, such as surfactant, can be mentioned.
- the amount of these optional components may be usually 25 parts by mass or less, preferably about 0.01 to 10 parts by mass, with 100 parts by mass of the polyester resin.
- Certain optional components that can be included in the polyester resin include core-shell rubber. By using the core-shell rubber, the impact resistance of the (a3) polyester resin sheet can be improved.
- the core shell rubber examples include methacrylic ester / styrene / butadiene rubber graft copolymer, acrylonitrile / styrene / butadiene rubber graft copolymer, acrylonitrile / styrene / ethylene / propylene rubber graft copolymer, and acrylonitrile / styrene / acrylic.
- List one or a mixture of two or more core-shell rubbers such as acid ester graft copolymers, methacrylic ester / acrylic ester rubber graft copolymers, methacrylic ester / acrylonitrile / acrylic ester rubber graft copolymers Can do.
- the core-shell rubber one or a mixture of two or more of these can be used.
- the blending amount of the core shell rubber is preferably 0.5 parts by mass or more in order to improve impact resistance when the polyester resin is 100 parts by mass.
- the blending amount of the core shell rubber is preferably 5 parts by mass or less, more preferably 3 parts by mass or less in order to maintain transparency.
- any one or two or more laminated sheets of the above-mentioned transparent resin sheets (a1) to (a3) are optional coextrusion apparatuses such as a feed block system, a multi-manifold system, and a stack plate system. And coextruding into a desired layer structure; using any film forming apparatus, any one or more of the transparent resin sheets (a1) to (a3) are used. After being obtained, these are heat-laminated or dry-laminated so as to have a desired layer structure; any one of the transparent resin sheets (a1) to (a3) is obtained using an arbitrary film forming apparatus. Thereafter, the sheet can be obtained by extrusion lamination so that the sheet has a desired layer structure.
- a printing layer may be provided on the back surface of the transparent resin sheet to enhance the design feeling, if desired.
- the said printing layer can be provided in order to provide high designability to the front panel of this invention.
- the printing layer can be formed by printing an arbitrary pattern using an arbitrary ink and an arbitrary printing machine. The detailed method of forming the printed layer is as described above in the item of the decorative sheet.
- the front panel of the present invention is a panel having ( ⁇ ) a layer of a transparent resin sheet; ( ⁇ ) a layer containing the pressure-sensitive adhesive of the present invention; and ( ⁇ ) a layer of a resin film in order from the front side of the article.
- the decorative sheet of the present invention for example, the first and second aspects of the decorative sheet can be preferably used.
- the front panel of the present invention is a panel having ( ⁇ ) a layer of a resin film; ( ⁇ ) a layer containing the pressure-sensitive adhesive of the present invention; and ( ⁇ ) a layer of glass or a transparent resin sheet in order from the front side of the article.
- the decorative sheet according to the third aspect of the decorative sheet can be preferably used as the decorative sheet of the present invention.
- the front panel of the present invention is a panel having ( ⁇ ) a layer of a transparent resin sheet; ( ⁇ ) a layer containing the pressure-sensitive adhesive of the present invention; and ( ⁇ ) a layer of a resin film in order from the front side of the article.
- the front panel of the present invention preferably further comprises a surface protective layer on the surface on the ( ⁇ ) layer side.
- the surface protective layer can enhance the damage resistance and solvent resistance.
- the surface protective layer may be the same as described above in the description of the third aspect of the decorative sheet.
- the front panel of the present invention can be prepared by any method, for example, by using a laminated sheet having ( ⁇ ) a layer of a transparent resin sheet; ( ⁇ ) a layer containing the pressure-sensitive adhesive of the present invention; and ( ⁇ ) a layer of a resin film in this order. It can be obtained by cutting using it.
- Examples of the cutting method include router processing, water jet processing, laser processing, punching processing, and combinations thereof.
- the router processing is a processing method of cutting with a mill that rotates at high speed. This method is characterized by a smooth finished surface. Further, this method is computer controlled and has excellent dimensional stability and reproducibility.
- the above water jet processing means that water pressurized to ultra-high pressure (up to about 4000 atmospheres) is sprayed from a very small nozzle (usually about 0.1 mm ⁇ ), and the energy of high-speed and high-density ultra-high-pressure water is obtained. It is a processing method that uses and cuts. This method is excellent in that the thermal influence on the workpiece is small. In addition, this method may be performed by mixing an abrasive with water.
- the above-mentioned laser processing is a processing method in which the material of the part of the workpiece is melted and evaporated to be cut by focusing the laser on the part of the workpiece to be cut.
- the above punching process is a processing method in which a workpiece is placed on a Thomson mold in which a steel blade (Thomson blade) is placed on a support base and punched by pressing.
- This method is low in cost, has a high degree of freedom in dealing with various shapes, and is excellent in productivity.
- punching is preferable because of its high degree of freedom in dealing with various shapes and excellent productivity.
- FIG. 1 is a conceptual cross-sectional view showing an example of the front panel of the present invention.
- surface protective layer 1 transparent resin sheet layer (panel substrate) 2, layer 3 containing the pressure-sensitive adhesive of the present invention, transparent resin film layer 4, printing layer 5, and colored resin film layer 6 have.
- Examples of the article of the present invention include, but are not limited to, articles such as refrigerators, washing machines, cupboards, and clothes racks; doors and lids of these articles; and parts to be incorporated into the doors and lids Are all included.
- Adhesion strength (i-1) Initial adhesion strength between glass plate and decorative sheet Float plate glass (thickness 3 mm) defined in JIS R3202: 2011 of Test Piece Co., Ltd. was used as a test plate, and JIS A5759: According to 2008, 180 degree peeling adhesive strength of the decorative sheet to the test plate at a temperature of 23 ° C. was measured at a speed of 300 mm / min.
- a ′ Reference acrylic polymer (A′-1) “Acrybase LKG-1011” (trade name) of Fujikura Kasei Co., Ltd. (trade name): glass transition temperature ⁇ 53 ° C., acid value 1.9 mgKOH / g, weight average molecular weight 1 million (A′-2) “Acrybase LKG-1101” (trade name) manufactured by Fujikura Kasei Co., Ltd .: glass transition temperature ⁇ 22 ° C., acid value 0.3 mgKOH / g, weight average molecular weight 430,000
- E Transparent resin sheet
- E-1 Acrylic resin sheet Acrylic resin composition of Sumitomo Chemical Co., Ltd. (resin composition of 70 parts by mass of acrylic resin and 30 parts by mass of acrylic core shell rubber) “HT03Y” ( Product name) and using a device (see FIG. 2) including an extruder and a T-die 8, the molten sheet 7 of the resin is continuously extruded from the T-die 8, and the first mirror roll 9 ( The molten sheet 7 is fed between and pressed between the rotating second mirror surface roll 10 and a roll on the side that holds the molten sheet 7 to the next transfer roll), and is transparent with a thickness of 1.2 mm. A resin sheet was obtained.
- the setting conditions at this time were a first mirror surface roll setting temperature of 100 ° C., a second mirror surface roll setting temperature of 80 ° C., and a T die outlet resin temperature of 300 ° C.
- the obtained transparent resin sheet had a total light transmittance of 86%, a haze of 2.7%, and a yellowness index of 0.7.
- the film forming apparatus schematically shown in FIG. 2 was also used for the production of the following resin sheets (E-2) to (E-5).
- (E-2) Aromatic polycarbonate-based resin sheet Aromatic polycarbonate-based resin “K-1300Y” (trade name) by Teijin Chemicals Ltd. 99.5 parts by mass and Kaneka's core shell rubber (methacrylic ester, styrene / butadiene) Rubber graft copolymer) Transparent resin having a thickness of 1.2 mm in the same manner as in the above (E-1) except that the resin composition with 0.5 part by mass of “Kane Ace B-56” (trade name) was used. A sheet was obtained. The setting conditions at this time were a first mirror surface roll setting temperature of 140 ° C., a second mirror surface roll setting temperature of 120 ° C., and a T-die outlet resin temperature of 300 ° C. The obtained transparent resin sheet had a total light transmittance of 88%, a haze of 2.3%, and a yellowness index of 0.8.
- a transparent resin sheet having a thickness of 1.2 mm was obtained in the same manner as in the above (E-1) except that the resin composition with 1 part by mass of “B-56” (trade name) was used.
- the setting conditions at this time were a first mirror surface roll setting temperature of 80 ° C., a second mirror surface roll setting temperature of 40 ° C., and a T die outlet resin temperature of 200 ° C.
- the obtained transparent resin sheet had a total light transmittance of 85%, a haze of 3.0%, and a yellowness index of 0.5.
- Polyester resin sheet 2 99 parts by mass of non-crystalline polyester resin “Tritan FX200” (trade name) from Eastman Chemical Company and Kaneka's core shell rubber (methacrylate / styrene / butadiene rubber graft copolymer) “Kaneace B-56” (Product Name)
- a transparent resin sheet having a thickness of 1.2 mm was obtained in the same manner as in the above (E-1) except that 1 part by mass of the resin composition was used.
- the setting conditions at this time were a first mirror surface roll setting temperature of 80 ° C., a second mirror surface roll setting temperature of 40 ° C., and a T die outlet resin temperature of 200 ° C.
- the obtained transparent resin sheet had a total light transmittance of 85%, a haze of 3.0%, and a yellowness index of 0.5.
- a transparent resin sheet having a thickness of 1 mm and an intermediate layer thickness of 1 mm was obtained.
- the setting conditions at this time were a first mirror surface roll setting temperature of 140 ° C., a second mirror surface roll setting temperature of 120 ° C., and a T-die outlet resin temperature of 300 ° C.
- the obtained transparent resin sheet had a total light transmittance of 91%, a haze of 1.0%, and a yellowness index of 0.7.
- F Resin film
- F-1 Transparent biaxially stretched polyethylene terephthalate resin film with easy adhesion treatment on both surfaces: thickness 25 ⁇ m
- F-2 Colored polyvinyl chloride resin film of black color (lightness of 2.3 measured according to JIS Z8721: 1993): thickness 80 ⁇ m
- Example 1 100 parts by mass of the component (A-1), 0.057 parts by mass of the component (B-1), 0.077 parts by mass of the component (C-1), and 0 of the component (D-1) in terms of solid content 0.023 parts by mass was mixed and stirred to obtain an adhesive. Next, printing was performed on one surface of (F-1). Subsequently, the above (G-1) is applied on the formed printed layer using a knife coater so as to have a dry film thickness of 15 ⁇ m, and after drying, the resin sheet (F-2) is applied to the coated surface. ) Was laminated under the condition that the surface temperature of the laminate roll was 150 ° C.
- a pressure-sensitive adhesive layer having a film thickness of 20 ⁇ m is formed on the other surface of (F-1) using the above-mentioned pressure-sensitive adhesive and using a comma coating type coating apparatus.
- the above tests (i) to (ix) for measuring and evaluating physical properties were performed. The results are shown in Table 1 or 2.
- Examples 2 to 21 A decorative sheet was prepared and physical properties were measured and evaluated in the same manner as in Example 1 except that the formulation of the adhesive was changed as shown in Tables 1, 3, and 5. The results are shown in Tables 1-6.
- Example 1S 100 parts by mass of the component (A-1), 0.057 parts by mass of the component (B′-2), 0.077 parts by mass of the component (C-1), and the component (D-1) in terms of solid content
- the obtained pressure-sensitive adhesive was strongly yellowed. Since it is not preferable for design applications, no evaluation test was performed.
- Example 2S 100 parts by mass of the component (A-1), 0.057 parts by mass of the component (B′-3), 0.077 parts by mass of the component (C-1), and the component (D-1) in terms of solid content
- the obtained pressure-sensitive adhesive was strongly cloudy. Since it is not preferable for design applications, no evaluation test was performed.
- Example 3S 100 parts by mass of the component (A-1) in terms of solid content, 0.057 parts by mass of the component (B′-4), 0.077 parts by mass of the component (C-1), and the component (D-1 )
- the resulting pressure-sensitive adhesive was strongly cloudy. Since it is not preferable for design applications, no evaluation test was performed.
- Example 4S 100 parts by weight of the component (A-1) in terms of solid content, 0.057 parts by weight of the component (B′-5), 0.077 parts by weight of the component (C-1), and the component (D-1 ) When 0.023 parts by mass were mixed and stirred, the resulting pressure-sensitive adhesive was gelled. Therefore, the evaluation test was not performed.
- the decorative sheet having a layer containing the preferred pressure-sensitive adhesive of the present invention is excellent in adhesive strength with glass, moisture and heat resistance, heat resistance, transparency, and hardness. It has been found that the above-mentioned disadvantages related to peeling, peeling in a high temperature and high humidity environment, and dents can be eliminated.
- the decorative sheet having a layer containing a preferable pressure-sensitive adhesive of the present invention is excellent in adhesive strength with a transparent resin sheet, heat and humidity resistance, heat resistance, transparency, and hardness. It has been found that the above-mentioned inconveniences related to peeling and dent caused by outgas in a high temperature and high humidity environment can be solved.
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Abstract
Description
[1].
(A)ガラス転移温度-50~-25℃のアクリル系重合体100質量部;
(B)エポキシ基を有するシランカップリング剤0.01~3質量部;
(C)1分子中に2以上のエポキシ基を有する化合物0.01~0.9質量部;及び
(D)有機多価金属化合物0.01~0.5質量部
を含む粘着剤。
[2].
上記[1]項に記載の粘着剤を含む層を有する化粧シート。
[3].
ガラスとの密着強度が、温度60℃、10分間の熱処理後において、5N/25mm以上である上記[2]項に記載の化粧シート。
[4].
ガラスとの密着強度残率が、温度-30℃、相対湿度90%の環境下に6時間曝した後、温度60℃、相対湿度90%の環境下に6時間曝す処理を1サイクルとして、合計3サイクル行うヒートサイクル処理後において、70%以上である上記[2]又は[3]項に記載の化粧シート。
[5].
ガラスとの密着強度残率が、濃度5質量%、温度25℃の水酸化ナトリウム水溶液に、24時間の浸漬処理後において、70%以上である上記[2]~[4]項の何れか1項に記載の化粧シート。
[6].
アクリル系樹脂、芳香族ポリカーボネート系樹脂、並びに、アクリル系樹脂及び芳香族ポリカーボネート系樹脂以外のポリエステル系樹脂からなる群から選択される少なくとも何れか1種の樹脂との密着強度が、温度60℃、10分間の熱処理後において、5N/25mm以上である上記[2]項に記載の化粧シート。
[7].
アクリル系樹脂、芳香族ポリカーボネート系樹脂、並びに、アクリル系樹脂及び芳香族ポリカーボネート系樹脂以外のポリエステル系樹脂からなる群から選択される少なくとも何れか1種の樹脂との密着強度残率が、温度-30℃、相対湿度90%の環境下に6時間曝した後、温度60℃、相対湿度90%の環境下に6時間曝す処理を1サイクルとして、合計3サイクル行うヒートサイクル処理後において、70%以上である上記[2]又は[6]項に記載の化粧シート。
[8].
アクリル系樹脂、芳香族ポリカーボネート系樹脂、並びに、アクリル系樹脂及び芳香族ポリカーボネート系樹脂以外のポリエステル系樹脂からなる群から選択される少なくとも何れか1種の樹脂との密着強度残率が、濃度5質量%、温度25℃の水酸化ナトリウム水溶液に、24時間の浸漬処理後において、70%以上である上記[2]、[6]、[7]項の何れか1項に記載の化粧シート。
[9].
物品の本体正面の開口を開閉する扉体の正面を構成するパネルであって、
物品の正面側から順に、
(α)ガラス又は透明樹脂シートの層;
(β)上記[1]項に記載の粘着剤を含む層;及び
(γ)樹脂フィルムの層
を有するパネル。
[10].
物品本体の正面部を開閉する扉体の正面パネルであって、
物品の正面側から順に、
(γ)樹脂フィルムの層;
(β)上記[1]項に記載の粘着剤を含む層;及び
(α)ガラス又は透明樹脂シートの層
を有するパネル。
[11].
上記[1]項に記載の粘着剤を含む物品。
[12].
上記[2]~[8]項の何れか1項に記載の化粧シートを含む物品。
[13].
上記[9]又は[10]項に記載のパネルを含む物品。
本発明の粘着剤は、(A)ガラス転移温度-50~-25℃のアクリル系重合体100質量部;(B)エポキシ基を有するシランカップリング剤0.01~3質量部;(C)1分子中に2以上のエポキシ基を有する化合物0.01~0.9質量部;及び(D)有機多価金属化合物0.01~0.5質量部を含む。
上記成分(A)のアクリル系重合体は、粘着剤の主剤として、粘着性を発現するとともに、上記成分(B)~(D)、及びその他の任意成分を包含する働きをする。
1/(Tg+273)=W1/(Tg1+273)+W2/(Tg2+273)+W3/(Tg3+273)+・・・+Wn/(Tgn+273)
(式中、Tgは、n種の単量体からなる重合体のガラス転移温度(℃)であり、W1、W2、W3・・・Wnは、単量体組成物中の各単量体の質量%であり、Tg1、Tg2、Tg3・・・Tgnは、各単量体のホモポリマーのガラス転移温度(℃)である。)
各ホモポリマーのTgは、例えば、ポリマーハンドブックなどに記載されている数値を使用することができる。
シランカップリング剤は、加水分解性基(例えば、メトキシ基、エトキシ基等のアルコキシ基;アセトキシ基等のアシルオキシ基;クロロ基等のハロゲン基など)、及び有機官能基(例えば、アミノ基、ビニル基、エポキシ基、メタクリロキシ基、アクリロキシ基、イソシアネート基など)の少なくとも2種類の異なる反応性基を有するシラン化合物である。上記成分(B)のシランカップリング剤としては、有機官能基として少なくともエポキシ基を有するシランカップリング剤を用いる。上記成分(B)のシランカップリング剤は、エポキシ基を有することにより、上記成分(A)や上記成分(C)と化学結合ないし強く相互作用することができる。上記成分(B)のシランカップリング剤は、このような化学結合や相互作用を阻害しない範囲でエポキシ基以外の有機官能基を有していてもよい。エポキシ基の作用により、粘着剤に適度な硬度が付与され、打痕に関連した不都合を解消することができる。また、上記成分(B)のシランカップリング剤は、加水分解性基を有することにより、打痕に関連した不都合を解消するのに十分な硬度であるにも係わらず、発泡断熱材充填工程における剥離に関する上述の不都合を解消することができる。更に、上記成分(B)のシランカップリング剤は、有機官能基がエポキシ基であることから、上記成分(C)や上記成分(D)との混和性に優れる。
上記成分(C)のエポキシ基含有化合物は、1分子中に2以上のエポキシ基を有し、上記成分(A)や(B)と化学結合ないし強く相互作用することができる。これにより、粘着剤に適度な硬度が付与され、打痕に関する上述の不都合を解消することができる。また、上記成分(C)のエポキシ基含有化合物は、上記成分(D)と特異的な高相性を示し、高温高湿の環境下においても、粘着強度や透明性を保持することができる。
上記成分(D)の有機多価金属化合物は、上記成分(C)と上記成分(A)や上記成分(B)との化学反応や相互作用を補助する働きをする。これにより粘着剤に適度な硬度が付与され、打痕に関する上述の不都合を解消することができる。また、上記成分(D)の有機多価金属化合物は、上記成分(C)と特異的な高相性を示し、高温高湿の環境下においても、粘着強度や透明性を保持することができる。
本発明の化粧シートは、本発明の粘着剤を含む層を有することを特徴とする。本発明の化粧シートは、通常、この粘着剤を含む層がその上に形成される基材層を有している。基材層は、粘着剤を含む層をその上に形成可能である限りは、材質、積層構造及び厚みについて特に制限されない。本発明の化粧シートは、通常、パネル基材のガラス又は透明樹脂シートとの貼合面側に本発明の粘着剤を含む層を有すること以外は、制限されず、任意の層構成にすることができる。典型的には、基材層は、透明樹脂フィルムまたは着色樹脂フィルム等の樹脂フィルム層である。以下、本発明の化粧シートの好ましい実施態様について、ガラス製又は透明樹脂シート製のパネル基材に貼り付けて用いる場合の例により説明する。
第1の態様は、ガラス製又は透明樹脂シート製のパネル基材の背面側に貼り付けることにより正面パネルを構成する化粧シートであって、基材層である透明樹脂フィルムの正面側(上記パネル基材との貼合面側)の面の上に、直接又はアンカーコートを介して、本発明の粘着剤を含む層を有する。
第2の態様は、ガラス製又は透明樹脂シート製のパネル基材の背面側に貼り付けることにより正面パネルを構成する化粧シートであって、基材層である着色樹脂フィルムの正面側(上記パネル基材との貼合面側)の面の上に、直接又はアンカーコートを介して、本発明の粘着剤を含む層を有する。上記着色樹脂フィルムの色により意匠を付与することができる。また、上記着色樹脂フィルムの色により、背面側に存在するもの(例えば、発泡断熱材など)を隠蔽することができる。
第3の態様は、ガラス製又は透明樹脂シート製のパネル基材の正面側に貼り付けることにより正面パネルを構成する化粧シートであって、これらのパネル基材の透明感を意匠として活かすため、好ましくは基材層である透明樹脂フィルムの背面側(上記パネル基材との貼合面側)の面の上に、直接又はアンカーコートを介して、本発明の粘着剤を含む層を有する。化粧シートを、ガラス製のパネル基材の正面側に貼り付けることにより、飛散防止機能を発現し易くなる。化粧シートを、透明樹脂シート製のパネル基材の正面側に貼り付けることにより、傷付き防止効果を付与することが可能となる。
なお、ここで言う「アクリル系樹脂」、「芳香族ポリカーボネート系樹脂」及び「アクリル系樹脂及び芳香族ポリカーボネート系樹脂以外のポリエステル系樹脂」に含まれる例は、パネルを構成する透明樹脂シートの項において後述されているとおりである。
本発明の正面パネルは、物品本体の正面部を開閉する扉体の正面を構成するパネルである。本発明の正面パネルは、ガラス製又は透明樹脂シート製のパネル基材に、本発明の化粧シートが貼合された構造を有する。本発明の正面パネルにおいて、化粧シートは、パネル基材との貼合面側から順に、本発明の粘着剤を含む層、及び少なくとも1層からなる基材層(典型的には透明樹脂フィルム又は着色樹脂フィルム等の樹脂フィルム)を有している。即ち、本発明の正面パネルは、ある態様においては、物品の正面側から順に、(α)ガラス又は透明樹脂シートの層;(β)本発明の粘着剤を含む層;及び(γ)樹脂フィルムの層を有するパネルである。また、本発明の正面パネルは、他の態様においては、物品の正面側から順に、(γ)樹脂フィルムの層;(β)本発明の粘着剤を含む層;及び(α)ガラス又は透明樹脂シートの層を有するパネルである。これらの態様において、(γ)樹脂フィルムの層は、ガラス等の限定されない他の素材の層によって置換されてもよい。
(a1)アクリル系樹脂シート;
(a2)芳香族ポリカーボネート系樹脂シート;
(a3)ポリエステル系樹脂シート(アクリル系樹脂又は芳香族ポリカーボネート系樹脂から形成された樹脂シートを除く);
(a4)上記透明樹脂シート(a1)~(a3)の何れか1種又は2種以上の積層シート
が好ましい。
化粧シートに関する物性の測定・評価方法について説明する。
(i)密着強度
(i-1)ガラス板と化粧シートとの初期の密着強度
試験板として株式会社テストピースのJIS R3202:2011に規定するフロート板ガラス(厚さ3mm)を使用し、JIS A5759:2008に従い、300mm/分の速度で、温度23℃における、試験板に対する化粧シートの180度引き剥がし粘着力を測定した。
(i-2~i-6)透明樹脂シート(E-1~E-5)と化粧シートとの初期の密着強度
上記フロート板ガラスの替わりに、下記の5種の透明樹脂シート(E-1~E-5)の各々から、そのマシン方向が試験片の長さ方向と一致するように打抜いた試験板(幅50mm、長さ125mm)を用い、試験板の第一鏡面ロール(後述)側の面を化粧シートとの貼合面としたこと以外は、上記(i-1)と同様に化粧シートの引き剥がし粘着力を測定した。
試験片に対して、温度60℃、10分間の熱処理を行った後、粘着力を測定したこと以外は、上記試験(i)と同様の手法により、熱処理後の化粧シートの粘着力を測定した。
試験片に対して、温度-30℃、相対湿度90%の環境下に6時間曝した後、温度60℃、相対湿度90%の環境下に6時間曝す処理を1サイクルとして、合計3サイクルの処理を行った後、粘着力を測定したこと以外は、上記試験(i)と同様の手法により、ヒートサイクル後の化粧シートの粘着力を測定した。続いて、上記試験(i)の値に対するヒートサイクル後の粘着力の割合(密着強度残率)を算出した。
試験片に対して、濃度5質量%、温度25℃の水酸化ナトリウム水溶液に、24時間の浸漬処理を行った後、粘着力を測定したこと以外は、上記試験(i)と同様の手法により、浸漬処理後の化粧シートの粘着力を測定した。続いて、上記試験(i)の値に対する浸漬処理後の粘着力の割合(密着強度残率)を算出した。
上記試験(i)と同様に作成した試験片の化粧シート側から、ステンレス製の直径1mmの球を、1Nの力で押し付けながら、上記フロート板ガラス側又は下記透明樹脂シート側から化粧シートを目視観察し、以下の基準で評価した。
○(良好):球の押し付け箇所が視認できない。
×(不良):明確に、球を押し付けている箇所が視認できる。
試験片を、温度60℃、相対湿度98%の環境下に400時間曝した後、粘着力を測定したこと以外は、上記試験(i)と同様の手法により、湿熱処理後の化粧シートの粘着力を測定した。続いて、上記試験(i)の値に対する浸漬処理後の粘着力の割合(密着強度残率)を算出した。
上記試験(vi)において、湿熱処理後の粘着力を測定する前に、粘着剤層を目視観察し、以下の基準で評価した。
○(良好):粘着剤層の透明性に暴露前と変化は認められない。
△(やや不良):暴露前と比較すると、白化したことが認められるが、白化の程度は大きくない。
×(不良):かなりの程度まで白化したことが認められる。
試験片に対して、温度50℃の水中において、240時間の浸漬処理を行った後、粘着力を測定したこと以外は、上記試験(i)と同様の手法により、温水処理後の化粧シートの粘着力を測定した。続いて、上記試験(i)の値に対する温水処理後の粘着力の割合(密着強度残率)を算出した。
上記試験(viii)において、温水処理後の粘着力を測定する前に、粘着剤層を目視観察し、以下の基準で評価した。
○(良好):粘着剤層の透明性に暴露前と変化は認められない。
△(やや不良):暴露前と比較すると、白化したことが認められるが、白化の程度は大きくない。
×(不良):かなりの程度まで白化したことが認められる。
(A)ガラス転移温度-50~-25℃のアクリル系重合体
(A-1)藤倉化成株式会社の「アクリベースLKG-1010」(商品名):ガラス転移温度-34℃、酸価1.9mgKOH/g、重量平均分子量85万
(A-2)藤倉化成株式会社の「アクリベースLKG-1007」(商品名):ガラス転移温度-44℃、酸価2.1mgKOH/g、重量平均分子量100万
(A-3)藤倉化成株式会社の「アクリベースLKG-1001」(商品名):ガラス転移温度-40℃、酸価7mgKOH/g、重量平均分子量100万
(A’-1)藤倉化成株式会社の「アクリベースLKG-1011」(商品名):ガラス転移温度-53℃、酸価1.9mgKOH/g、重量平均分子量100万
(A’-2)藤倉化成株式会社の「アクリベースLKG-1101」(商品名):ガラス転移温度-22℃、酸価0.3mgKOH/g、重量平均分子量43万
(B-1)信越化学工業株式会社の3-グリシドキシプロピルトリメトキシシラン「KBM-403」(商品名)
(B-2)信越化学工業株式会社の3-グリシドキシプロピルトリエトキシシラン「KBE-403」(商品名)
(B’-1)東レ・ダウコーニング株式会社の3-メタクリロキシプロピルトリメトキシシラン「Z-6030」(商品名)
(B’-2)信越化学工業株式会社の3-アミノプロピルトリメトキシシラン「KBM-903」(商品名)
(B’-3)信越化学工業株式会社のビニルトリメトキシシラン「KBM-1003」(商品名)
(B’-4)信越化学工業株式会社の3-メルカプトプロピルトリメトキシシラン「KBM-803」(商品名)
(B’-5)信越化学工業株式会社の3-イソシアネートプロピルトリエトキシシラン「KBM-9007」(商品名)
(C-1)1,3-ビス(N,N’-ジグリシジルアミノメチル)シクロヘキサン
(D-1)アルミニウムトリスアセチルアセトネート
(E-1)アクリル系樹脂シート
住友化学工業株式会社のアクリル系樹脂組成物(アクリル系樹脂70質量部とアクリル系コアシェルゴム30質量部の樹脂組成物)「HT03Y」(商品名)を用い、押出機とTダイ8とを備える装置(図2参照)を使用して、Tダイ8から上記樹脂の溶融シート7を連続的に押出し、回転する第一鏡面ロール9(溶融シート7を抱いて次の移送ロールへと送り出す側のロール)と、回転する第二鏡面ロール10との間に、上記溶融シート7を供給投入し、押圧して、厚み1.2mmの透明樹脂シートを得た。このときの設定条件は、第一鏡面ロールの設定温度100℃、第二鏡面ロールの設定温度80℃、Tダイ出口の樹脂温度300℃であった。得られた透明樹脂シートの全光線透過率は86%、ヘーズは2.7%、黄色度指数は0.7であった。
なお、以下の(E-2)~(E-5)の各樹脂シートの製造にも、図2に模式的に示された製膜装置を用いた。
帝人化成株式会社の芳香族ポリカーボネート系樹脂「K-1300Y」(商品名)99.5質量部と株式会社カネカのコアシェルゴム(メタクリル酸エステル・スチレン/ブタジエンゴムグラフト共重合体)「カネエースB-56」(商品名)0.5質量部との樹脂組成物を用いたこと以外は上記(E-1)と同様にして、厚み1.2mmの透明樹脂シートを得た。このときの設定条件は、第一鏡面ロールの設定温度140℃、第二鏡面ロールの設定温度120℃、Tダイ出口の樹脂温度300℃であった。得られた透明樹脂シートの全光線透過率は88%、ヘーズは2.3%、黄色度指数は0.8であった。
イーストマンケミカルカンパニー社の非結晶性ポリエステル系樹脂(PETG樹脂)「Cadence GS1」(商品名)99質量部と株式会社カネカのコアシェルゴム(メタクリル酸エステル・スチレン/ブタジエンゴムグラフト共重合体)「カネエースB-56」(商品名)1質量部との樹脂組成物を用いたこと以外は上記(E-1)と同様にして、厚み1.2mmの透明樹脂シートを得た。このときの設定条件は、第一鏡面ロールの設定温度80℃、第二鏡面ロールの設定温度40℃、Tダイ出口の樹脂温度200℃であった。得られた透明樹脂シートの全光線透過率は85%、ヘーズは3.0%、黄色度指数は0.5であった。
イーストマンケミカルカンパニー社の非結晶性ポリエステル系樹脂「トライタンFX200」(商品名)99質量部と株式会社カネカのコアシェルゴム(メタクリル酸エステル・スチレン/ブタジエンゴムグラフト共重合体)「カネエースB-56」(商品名)1質量部との樹脂組成物を用いたこと以外は上記(E-1)と同様にして、厚み1.2mmの透明樹脂シートを得た。このときの設定条件は、第一鏡面ロールの設定温度80℃、第二鏡面ロールの設定温度40℃、Tダイ出口の樹脂温度200℃であった。得られた透明樹脂シートの全光線透過率は85%、ヘーズは3.0%、黄色度指数は0.5であった。
押出機とTダイとを備える2種3層マルチマニホールド方式の共押出製膜装置を使用し、三菱瓦斯化学株式会社のアクリル系樹脂「Optimas7500R」(商品名)を両外層とし、住化スタイロンポリカーボネート株式会社の芳香族ポリカーボネート「カリバー302-4」(商品名)を中間層とする溶融積層シートをTダイから連続的に押出し、回転する第一鏡面ロール(溶融シートを抱いて次の移送ロールへと送り出す側のロール)と、回転する第二鏡面ロールとの間に、上記溶融積層シートを供給投入し、押圧して、全厚み1.2mm、両外層の厚み0.1mm、中間層の厚み1mmの透明樹脂シートを得た。このときの設定条件は、第一鏡面ロールの設定温度140℃、第二鏡面ロールの設定温度120℃、Tダイ出口の樹脂温度300℃であった。得られた透明樹脂シートの全光線透過率は91%、ヘーズは1.0%、黄色度指数は0.7であった。
(F-1)両面に易接着処理の施された透明な二軸延伸ポリエチレンテレフタレート系樹脂フィルム:厚み25μm
(F-2)黒色(JIS Z8721:1993に従い、測定した明度2.3)の着色ポリ塩化ビニル系樹脂フィルム:厚み80μm
(G-1)DICグラフィックス株式会社の塩化ビニル・酢酸ビニル・アクリル共重合体系接着剤「VTP-NT」(商品名)
固形分換算で上記成分(A-1)100質量部、上記成分(B-1)0.057質量部、上記成分(C-1)0.077質量部、及び上記成分(D-1)0.023質量部を混合撹拌し、粘着剤を得た。次に上記(F-1)の一方の面の上に印刷を施した。続いて、形成された印刷層の上に上記(G-1)を、乾燥膜厚15μmとなるようにナイフコーターを使用して塗布し、乾燥後、その塗布面に上記樹脂シート(F-2)を、ラミネートロールの表面温度150℃の条件でラミネートした。次に、上記(F-1)の他方の面の上に、上記で得た粘着剤を用い、コンマコーティング方式の塗工装置を使用して膜厚20μmの粘着剤層を形成し、化粧シートを得た。得られた化粧シートについて、物性測定・評価のための上記試験(i)~(ix)を行った。結果を表1又は2に示す。
粘着剤の配合を表1、3、5に示すように変更したこと以外は全て例1と同様に、化粧シートの作製及び物性の測定・評価を行った。結果を表1~6に示す。
固形分換算で上記成分(A-1)100質量部、上記成分(B’-2)0.057質量部、上記成分(C-1)0.077質量部、及び上記成分(D-1)0.023質量部を混合撹拌したところ、得られた粘着剤は、強く黄変したものであった。意匠用途には好ましくないため、評価試験は実施しなかった。
固形分換算で上記成分(A-1)100質量部、上記成分(B’-3)0.057質量部、上記成分(C-1)0.077質量部、及び上記成分(D-1)0.023質量部を混合撹拌したところ、得られた粘着剤は、強く白濁したものであった。意匠用途には好ましくないため、評価試験は実施しなかった。
固形分換算で上記成分(A-1)を100質量部、上記成分(B’-4)0.057質量部、上記成分(C-1)0.077質量部、及び上記成分(D-1)0.023質量部を混合撹拌したところ、得られた粘着剤は、強く白濁したものであった。意匠用途には好ましくないため、評価試験は実施しなかった。
固形分換算で上記成分(A-1)を100質量部、上記成分(B’-5)0.057質量部、上記成分(C-1)0.077質量部、及び上記成分(D-1)0.023質量部を混合撹拌したところ、得られた粘着剤は、ゲル化していた。そのため評価試験は実施しなかった。
2:透明樹脂シートの層
3:粘着剤層
4:透明樹脂フィルムの層
5:印刷層
6:着色樹脂フィルムの層
7:溶融シート
8:Tダイ
9:第一鏡面ロール
10:第二鏡面ロール
Claims (13)
- (A)ガラス転移温度-50~-25℃のアクリル系重合体100質量部;
(B)エポキシ基を有するシランカップリング剤0.01~3質量部;
(C)1分子中に2以上のエポキシ基を有する化合物0.01~0.9質量部;及び
(D)有機多価金属化合物0.01~0.5質量部
を含む粘着剤。 - 請求項1に記載の粘着剤を含む層を有する化粧シート。
- ガラスとの密着強度が、温度60℃、10分間の熱処理後において、5N/25mm以上である請求項2に記載の化粧シート。
- ガラスとの密着強度残率が、温度-30℃、相対湿度90%の環境下に6時間曝した後、温度60℃、相対湿度90%の環境下に6時間曝す処理を1サイクルとして、合計3サイクル行うヒートサイクル処理後において、70%以上である請求項2又は3に記載の化粧シート。
- ガラスとの密着強度残率が、濃度5質量%、温度25℃の水酸化ナトリウム水溶液に、24時間の浸漬処理後において、70%以上である請求項2~4の何れか1項に記載の化粧シート。
- アクリル系樹脂、芳香族ポリカーボネート系樹脂、並びに、アクリル系樹脂及び芳香族ポリカーボネート系樹脂以外のポリエステル系樹脂からなる群から選択される少なくとも何れか1種の樹脂との密着強度が、温度60℃、10分間の熱処理後において、5N/25mm以上である請求項2に記載の化粧シート。
- アクリル系樹脂、芳香族ポリカーボネート系樹脂、並びに、アクリル系樹脂及び芳香族ポリカーボネート系樹脂以外のポリエステル系樹脂からなる群から選択される少なくとも何れか1種の樹脂との密着強度残率が、温度-30℃、相対湿度90%の環境下に6時間曝した後、温度60℃、相対湿度90%の環境下に6時間曝す処理を1サイクルとして、合計3サイクル行うヒートサイクル処理後において、70%以上である請求項2又は6に記載の化粧シート。
- アクリル系樹脂、芳香族ポリカーボネート系樹脂、並びに、アクリル系樹脂及び芳香族ポリカーボネート系樹脂以外のポリエステル系樹脂からなる群から選択される少なくとも何れか1種の樹脂との密着強度残率が、濃度5質量%、温度25℃の水酸化ナトリウム水溶液に、24時間の浸漬処理後において、70%以上である請求項2、6、7の何れか1項に記載の化粧シート。
- 物品本体の正面部を開閉する扉体の正面パネルであって、
物品の正面側から順に、
(α)ガラス又は透明樹脂シートの層;
(β)請求項1に記載の粘着剤を含む層;及び
(γ)樹脂フィルムの層
を有するパネル。 - 物品本体の正面部を開閉する扉体の正面パネルであって、
物品の正面側から順に、
(γ)樹脂フィルムの層;
(β)請求項1に記載の粘着剤を含む層;及び
(α)ガラス又は透明樹脂シートの層
を有するパネル。 - 請求項1に記載の粘着剤を含む物品。
- 請求項2~8の何れか1項に記載の化粧シートを含む物品。
- 請求項9又は10に記載のパネルを含む物品。
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2016
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Cited By (2)
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JP2019217658A (ja) * | 2018-06-18 | 2019-12-26 | リンテック株式会社 | 飛散防止フィルム |
JP7078465B2 (ja) | 2018-06-18 | 2022-05-31 | リンテック株式会社 | 飛散防止フィルム |
Also Published As
Publication number | Publication date |
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TW201730312A (zh) | 2017-09-01 |
US11459489B2 (en) | 2022-10-04 |
EP3418342A1 (en) | 2018-12-26 |
JPWO2017141449A1 (ja) | 2018-12-13 |
JP6782719B2 (ja) | 2020-11-11 |
EP3418342A4 (en) | 2019-11-13 |
CN108699414B (zh) | 2021-08-06 |
KR20180114119A (ko) | 2018-10-17 |
KR102479623B1 (ko) | 2022-12-20 |
TWI778937B (zh) | 2022-10-01 |
US20200017724A1 (en) | 2020-01-16 |
CN108699414A (zh) | 2018-10-23 |
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