WO2017082038A1 - 環状オレフィン樹脂フィルム - Google Patents
環状オレフィン樹脂フィルム Download PDFInfo
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- WO2017082038A1 WO2017082038A1 PCT/JP2016/081532 JP2016081532W WO2017082038A1 WO 2017082038 A1 WO2017082038 A1 WO 2017082038A1 JP 2016081532 W JP2016081532 W JP 2016081532W WO 2017082038 A1 WO2017082038 A1 WO 2017082038A1
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- meth
- acrylate
- cyclic olefin
- olefin resin
- resin film
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/34—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate
- C08F220/36—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate containing oxygen in addition to the carboxy oxygen, e.g. 2-N-morpholinoethyl (meth)acrylate or 2-isocyanatoethyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
- C08F222/1006—Esters of polyhydric alcohols or polyhydric phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
-
- 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
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3432—Six-membered rings
- C08K5/3435—Piperidines
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
Definitions
- the present invention relates to a cyclic olefin resin film having a cured coating film of an active energy ray-curable composition having high scratch resistance and excellent adhesion to a cyclic olefin resin film substrate.
- Cyclic olefin resin films are excellent in transparency, low birefringence, low moisture absorption, heat resistance, electrical insulation, chemical resistance, etc., and are widely used in optical members, medical, packaging films, automobiles, semiconductor applications, etc. .
- optical members are highly transparent in place of plastic films such as polyethylene terephthalate (PET) and triacetyl cellulose (TAC) that have been used in the past in line with diversification of units for liquid crystal display and touch panel applications.
- PET polyethylene terephthalate
- TAC triacetyl cellulose
- the cyclic olefin resin film has insufficient surface hardness, there is a risk of scratching during processing, and an active energy ray-curable composition is formed on the surface for improving wear resistance and scratch resistance. It has been studied to provide a protective layer such as a hard coat layer made of a cured film of a product.
- a protective layer such as a hard coat layer made of a cured film of a product.
- the cyclic olefin resin film has an alicyclic structure as its main structure, the polarity of the film surface is low and the water contact angle is as high as about 90 °, so when an active energy ray-curable composition is applied, There was a problem that the coating material was difficult to spread and the adhesion between the surface of the cyclic olefin resin film substrate and the hard coat layer was low.
- a cured coating film of a curable composition containing a (meth) acrylate having an alicyclic structure is used as the hard coat layer. It has been proposed to use (see, for example, Patent Document 2).
- this curable composition it is necessary to increase the ratio of (meth) acrylate having an alicyclic structure in order to achieve sufficient adhesion to the surface of the cyclic olefin resin film substrate.
- the ratio of the (meth) acrylate having an alicyclic structure is increased, there is a problem that the crosslink density of the cured coating film is lowered and the scratch resistance on the surface of the cured coating film becomes insufficient.
- the adhesiveness (initial adhesiveness) immediately after forming the cured coating film of the active energy ray-curable composition on the surface of the cyclic olefin resin film substrate is high, the adhesiveness when exposed to strong light thereafter A decrease in (light resistance) is a problem.
- the problem to be solved by the present invention is that a cured coating that can impart high scratch resistance to the surface of the cyclic olefin resin film substrate and has excellent adhesion to the surface of the cyclic olefin resin film substrate without a primer layer.
- Another object of the present invention is to provide a cyclic olefin resin film having a cured coating film of an active energy ray-curable composition that can form a film and that does not deteriorate even after being exposed to strong light.
- the present inventors use a specific light stabilizer for the active energy ray-curable composition that is a material of the cured coating film formed on the surface of the cyclic olefin resin film substrate. Therefore, a high scratch resistance can be imparted to the surface of the cyclic olefin resin film substrate, and a cured coating film having excellent adhesion with the surface of the cyclic olefin resin film substrate can be formed without a primer layer.
- the present invention was completed by finding that the adhesion does not decrease even after being exposed to strong light.
- the present invention has an active energy ray-curable compound (A), a hindered amine light stabilizer (B1) having a polymerizable functional group, and a hindered phenol group on at least one surface of the cyclic olefin resin film substrate. It has a cured coating film of an active energy ray-curable composition that contains at least one hindered amine light stabilizer (B) selected from the group consisting of a hindered amine light stabilizer (B2) as an essential component.
- A active energy ray-curable compound
- B1 hindered amine light stabilizer having a polymerizable functional group
- a hindered phenol group on at least one surface of the cyclic olefin resin film substrate. It has a cured coating film of an active energy ray-curable composition that contains at least one hindered amine light stabilizer (B) selected from the group consisting of a hindered amine light stabilizer (B2) as an essential component.
- the cyclic olefin resin film of the present invention has a high scratch resistance due to the cured coating film of the active energy ray-curable composition formed on the surface thereof, and the adhesion between the cured coating film and the cyclic olefin resin as the substrate High adhesion and its high adhesion does not deteriorate even after exposure to strong light. Therefore, the cyclic olefin resin film of the present invention can be used as an optical film used for liquid crystal displays and touch panel applications.
- the cyclic olefin resin film of the present invention comprises an active energy ray-curable compound (A), a hindered amine light stabilizer (B1) having a polymerizable functional group, and a hindered phenol on at least one surface of the cyclic olefin resin film substrate.
- a cured coating film of an active energy ray-curable composition containing, as an essential component, a hindered amine light stabilizer (B) that is at least one selected from the group consisting of a hindered amine light stabilizer (B2) having a group Is.
- Examples of the active energy ray-curable compound (A) include polyfunctional (meth) acrylate (A1) and urethane (meth) acrylate (A2). These can be used alone or in combination of two or more.
- (meth) acrylate refers to one or both of acrylate and methacrylate
- (meth) acryloyl group refers to one or both of acryloyl group and methacryloyl group.
- the polyfunctional (meth) acrylate (A1) is a compound having two or more (meth) acryloyl groups in one molecule.
- Specific examples of the polyfunctional (meth) acrylate (A1) include 1,4-butanediol di (meth) acrylate, 3-methyl-1,5-pentanediol di (meth) acrylate, and 1,6-hexanediol.
- polyfunctional (meth) acrylates (A1) can be used alone or in combination of two or more.
- these polyfunctional (meth) acrylates (A1) since the scratch resistance of the cured coating film of the active energy ray-curable composition used in the present invention is improved, dipentaerythritol hexa (meth) acrylate, Dipentaerythritol penta (meth) acrylate, pentaerythritol tetra (meth) acrylate, and pentaerythritol tri (meth) acrylate are preferable, and dipentaerythritol hexa (meth) acrylate and dipentaerythritol penta (meth) acrylate may be used in combination.
- the mass ratio when dipentaerythritol hexa (meth) acrylate and dipentaerythritol penta (meth) acrylate are used in combination is 40/60 to 80/20 because the scratch resistance of the cured coating is improved. Is preferable, the range of 50/50 to 75/25 is more preferable, and the range of 60/40 to 70/30 is still more preferable.
- the urethane (meth) acrylate (A2) is obtained by reacting polyisocyanate (a2-1) with (meth) acrylate (a2-2) having a hydroxyl group.
- polyisocyanate (a2-1) examples include aliphatic polyisocyanates and aromatic polyisocyanates. However, since the coloring of the cured coating film of the active energy ray-curable composition used in the present invention can be further reduced, Group polyisocyanates are preferred.
- the aliphatic polyisocyanate is a compound in which a portion excluding an isocyanate group is composed of an aliphatic hydrocarbon.
- Specific examples of the aliphatic polyisocyanate include aliphatic polyisocyanates such as hexamethylene diisocyanate, lysine diisocyanate, and lysine triisocyanate; norbornane diisocyanate, isophorone diisocyanate, methylene bis (4-cyclohexyl isocyanate), 1,3-bis (isocyanato).
- cycloaliphatic polyisocyanates such as methyl) cyclohexane, 2-methyl-1,3-diisocyanatocyclohexane and 2-methyl-1,5-diisocyanatocyclohexane.
- a trimerized product obtained by trimming the aliphatic polyisocyanate or the alicyclic polyisocyanate can also be used as the aliphatic polyisocyanate.
- these aliphatic polyisocyanates can be used alone or in combination of two or more.
- aliphatic polyisocyanates in order to improve the scratch resistance of the coating film, among the aliphatic polyisocyanates, hexamethylene diisocyanate, which is a linear aliphatic hydrocarbon diisocyanate, norbornane diisocyanate, which is an alicyclic diisocyanate, isophorone Diisocyanate is preferred.
- the (meth) acrylate (a2-2) is a compound having a hydroxyl group and a (meth) acryloyl group.
- Specific examples of the (meth) acrylate (a2-2) include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, and 4-hydroxybutyl (meth).
- Divalent compounds such as acrylate, 1,5-pentanediol mono (meth) acrylate, 1,6-hexanediol mono (meth) acrylate, neopentyl glycol mono (meth) acrylate, and hydroxypivalate neopentyl glycol mono (meth) acrylate Mono (meth) acrylate of alcohol; trimethylolpropane di (meth) acrylate, ethylene oxide (EO) modified trimethylolpropane (meth) acrylate, propylene oxide (PO) modified trimethylolpropane di (meta) Mono- or di (meth) acrylate of trivalent alcohol such as acrylate, glycerin di (meth) acrylate, bis (2- (meth) acryloyloxyethyl) hydroxyethyl isocyanurate, or a part of these alcoholic hydroxyl groups Mono- and di (meth) acrylates having hydroxyl groups modified with
- the urethane (meth) acrylate (A2) since the scratch resistance of the cured coating film of the active energy ray-curable composition used in the present invention can be improved, four or more (meth) acryloyl groups are contained in one molecule. What has is preferable. Since the urethane (meth) acrylate (A2) has four or more (meth) acryloyl groups in one molecule, the (meth) acrylate (a2-2) has 2 (meth) acryloyl groups. Those having at least two are preferred.
- Examples of such (meth) acrylate (a2-2) include trimethylolpropane di (meth) acrylate, ethylene oxide modified trimethylolpropane di (meth) acrylate, propylene oxide modified trimethylolpropane di (meth) acrylate, Glycerin di (meth) acrylate, bis (2- (meth) acryloyloxyethyl) hydroxyethyl isocyanurate, pentaerythritol tri (meth) acrylate, ditrimethylolpropane tri (meth) acrylate, dipentaerythritol penta (meth) acrylate, etc. Can be mentioned.
- (meth) acrylates (a2-2) can be used alone or in combination of two or more with respect to one of the aliphatic polyisocyanates.
- pentaerythritol tri (meth) acrylate and dipentaerythritol penta (meth) acrylate are preferable because they can improve scratch resistance.
- the reaction of the polyisocyanate (a2-1) and the (meth) acrylate (a2-2) can be carried out by a conventional urethanization reaction. Moreover, in order to accelerate
- urethanization catalyst examples include amine compounds such as pyridine, pyrrole, triethylamine, diethylamine and dibutylamine; phosphorus compounds such as triphenylphosphine and triethylphosphine; dibutyltin dilaurate, octyltin trilaurate, octyltin diacetate, dibutyltin Examples thereof include organic tin compounds such as diacetate and tin octylate, and organic zinc compounds such as zinc octylate.
- active energy ray-curable compound (A) other than said polyfunctional (meth) acrylate (A1) and urethane (meth) acrylate (A2) epoxy (meth) acrylate, polyester (meth)
- a relatively high molecular weight (meth) acrylate (A3) such as acrylate or polyether (meth) acrylate can be used.
- the epoxy (meth) acrylate include those obtained by reacting (meth) acrylic acid with bisphenol-type epoxy resin, novolac-type epoxy resin, polyglycidyl methacrylate and the like and esterifying it.
- polyester (meth) acrylate (meth) acrylic acid is made to react and esterify with the polyester which the both terminal obtained by polycondensation of polyhydric carboxylic acid and polyhydric alcohol is a hydroxyl group, for example. Or a product obtained by reacting (meth) acrylic acid with ester obtained by adding an alkylene oxide to a polyvalent carboxylic acid.
- polyether (meth) acrylate what was obtained by reacting (meth) acrylic acid with polyether polyol and esterifying is mentioned, for example.
- the said (meth) acrylate (A3) can be used individually or can be used together 2 or more types.
- the active energy ray-curable composition used in the present invention in addition to (A1) to (A3) exemplified as the active energy ray-curable compound (A), a (meth) acrylate having a phosphate group (When A4) is blended, the adhesion to the substrate can be further improved, which is preferable.
- the (meth) acrylate (A4) having a phosphate group is a (meth) acrylate having at least one phosphate group in one molecule.
- Examples of the (meth) acrylate (A4) having a phosphate group include (meth) acryloyloxyethyl phosphate, di (meth) acryloyloxyethyl phosphate, tri (meth) acryloyloxyethyl phosphate, caprolactone-modified phosphorus An acid (meth) acryloyloxyethyl etc. are mentioned, The compound which has a 2 or more (meth) acryloyl group in 1 molecule can also be used. These (meth) acrylates (A4) having a phosphate group can be used alone or in combination of two or more.
- the blending amount can improve the adhesion to the substrate, and the cured coating film. Since the scratch resistance of the surface can be further improved, the content of the active energy ray-curable compound (A) is preferably 0.1 to 30% by mass, and more preferably 0.5 to 20% by mass.
- the active energy ray-curable composition used in the present invention comprises the above-mentioned active energy ray-curable compound (A), a hindered amine light stabilizer (B1) having a polymerizable functional group, and a hindered amine light having a hindered phenol group. It contains at least one hindered amine light stabilizer (B) selected from the group consisting of stabilizers (B2) as an essential component.
- Examples of the light stabilizer (B1) include hindered amine light stabilizers having a polymerizable functional group such as a (meth) acryloyl group and a vinyl group. More specifically, 2,2,6,6-tetramethyl-4-piperidyl (meth) acrylate, 1,2,2,6,6-pentamethyl-4-piperidyl (meth) acrylate and the like can be mentioned. These light stabilizers (B1) can be used alone or in combination of two or more.
- the adhesiveness with the cyclic olefin resin is further improved and the adhesiveness after being exposed to strong light (hereinafter abbreviated as “light-resistant adhesiveness”) can be further suppressed. It is preferable to use 2,6,6-tetramethyl-4-piperidyl (meth) acrylate.
- Examples of the light stabilizer (B2) include hindered amine light stabilizers having a hindered phenol group such as 3,5-di-t-butyl-4-hydroxyphenyl group. More specifically, the compound etc. which are represented by following formula (1) are mentioned. This light stabilizer (B2) can also be used in combination with the light stabilizer (B1).
- the compounding amount of the hindered amine light stabilizer (B) in the active energy ray-curable composition used in the present invention can further suppress the initial adhesion with the cyclic olefin resin and the decrease in light resistance.
- the amount of the active energy ray-curable compound (A) is preferably 0.05 to 5 parts by mass, more preferably 0.1 to 2% by mass, and 0.3 to 1.5% by mass with respect to 100 parts by mass. Further preferred.
- the active energy ray-curable composition used in the present invention can be formed into a cured coating film by irradiating active energy rays after coating on the annular substrate.
- the active energy rays refer to ionizing radiation such as ultraviolet rays, electron beams, ⁇ rays, ⁇ rays, and ⁇ rays.
- a photopolymerization initiator (C) described later is added to the active energy ray curable composition of the present invention to improve curability. Is preferred.
- a photosensitizer (D) can be further added to improve curability.
- ionizing radiation such as electron beam, ⁇ -ray, ⁇ -ray, ⁇ -ray, etc.
- it cures quickly without using a photopolymerization initiator (C) or photosensitizer (D). It is not necessary to add a photopolymerization initiator (C) or a photosensitizer (D).
- Examples of the photopolymerization initiator (C) include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, oligo ⁇ 2-hydroxy-2-methyl-1- [4- ( 1-methylvinyl) phenyl] propanone ⁇ , benzyldimethyl ketal, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropan-1-one, 4- (2-hydroxyethoxy) phenyl- (2-hydroxy -2-propyl) ketone, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-2-morpholino (4-thiomethylphenyl) propan-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) ) -Acetophenone compounds such as butanone; benzoin, benzoin methyl ether, benzo Benzoin compounds such as isopropyl ether; acylphosphine oxide compounds such as 2,4,6-
- Examples of the photosensitizer (D) include tertiary amine compounds such as diethanolamine, N-methyldiethanolamine and tributylamine, urea compounds such as o-tolylthiourea, sodium diethyldithiophosphate, s-benzylisothiuro And sulfur compounds such as nitro-p-toluenesulfonate.
- tertiary amine compounds such as diethanolamine, N-methyldiethanolamine and tributylamine
- urea compounds such as o-tolylthiourea, sodium diethyldithiophosphate, s-benzylisothiuro
- sulfur compounds such as nitro-p-toluenesulfonate.
- the photopolymerization initiator (C) and the photosensitizer (D) are used in the active energy ray-curable compound (A) and the compound (B) in the active energy ray-curable composition of the present invention. Is preferably 0.05 to 20 parts by mass, and more preferably 0.5 to 10% by mass with respect to 100 parts by mass in total.
- the active energy ray-curable composition of the present invention includes an organic solvent and a polymerization prohibition depending on applications and required characteristics.
- Additives such as organic beads; inorganic fillers such as silicon oxide (silica particles), aluminum oxide, titanium oxide, zirconia, and antimony pentoxide can be blended. These other blends can be used alone or in combination of two or more.
- the scratch resistance of the cured coating film surface of the active energy ray-curable composition used in the present invention can be further improved, and the adhesion to the substrate can be further improved.
- the silica particles may have a surface modified with an organic group or a surface not modified. Further, the silica particles are preferably nanometer-sized silica fine particles because colloidal silica is preferable because the transparency of the cured coating film of the active energy ray-curable composition used in the present invention and the scratch resistance of the surface can be further improved. More preferred.
- the average particle diameter of the silica fine particles is preferably in the range of 5 to 200 nm, more preferably in the range of 5 to 100 nm. The average particle diameter is a value measured by a dynamic light scattering method.
- the blending amount in the case of blending the inorganic filler can improve the scratch resistance of the cured coating film surface of the active energy ray-curable composition used in the present invention, and can also improve the adhesion to the substrate.
- the active energy ray-curable compound (A) is preferably 1 to 150 parts by weight, more preferably 5 to 100 parts by weight, based on 100 parts by weight.
- the organic solvent is useful for appropriately adjusting the solution viscosity of the active energy ray-curable composition used in the present invention, and it is easy to adjust the film thickness particularly for performing thin film coating.
- the organic solvent that can be used here include aromatic hydrocarbons such as toluene and xylene; alcohols such as methanol, ethanol, isopropanol, and t-butanol; esters such as ethyl acetate, butyl acetate, and propylene glycol monomethyl ether acetate.
- Ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone; These solvents can be used alone or in combination of two or more.
- the cyclic olefin resin film substrate used in the cyclic olefin resin film of the present invention can be used without particular limitation even if it is a homopolymer or a copolymer as long as it is a polymer of cyclic olefin.
- Commercially available products of cyclic olefin resins include, for example, “ZEONOR (registered trademark)” and “ZEONEX (registered trademark)” manufactured by Nippon Zeon Co., Ltd .; “ARTON (registered trademark)” manufactured by JSR Corporation; Examples include “TOPAS (registered trademark)” manufactured by the company.
- the cyclic olefin resin film substrate is obtained by molding a cyclic olefin resin on a film.
- the surface of the cyclic olefin resin film substrate is used to improve the adhesion with the cured coating film of the active energy ray-curable composition used in the present invention.
- Those treated by electrical treatment corona discharge treatment, atmospheric pressure plasma treatment), chromic acid treatment, flame treatment, hot air treatment, ozone / ultraviolet ray / electron beam irradiation treatment, oxidation treatment, etc. are preferred, and among these, corona discharge treatment Those subjected to electrical treatment such as atmospheric pressure plasma treatment are more preferred.
- the thickness of the cyclic olefin resin film substrate is preferably 1 to 200 ⁇ m, more preferably 5 to 100 ⁇ m, and even more preferably 10 to 50 ⁇ m. By setting the thickness of the film substrate within the above range, curling can be easily suppressed even when a cured coating film of the active energy ray-curable composition used in the present invention is provided on one surface of the cyclic olefin resin film.
- the cyclic olefin resin film of the present invention is obtained by applying an active energy ray-curable composition to at least one surface of a cyclic olefin resin film substrate and then irradiating the active energy ray to form a cured coating film. It is a thing.
- Examples of the method for applying the active energy ray-curable composition to the cyclic olefin resin film include die coating, micro gravure coating, gravure coating, roll coating, comma coating, air knife coating, kiss coating, spray coating, transfer coating, and dip coating. Examples thereof include a coat, a spinner coat, a wheeler coat, a brush coat, a solid coat by silk screen, a wire bar coat, and a flow coat.
- examples of the device for irradiating the ultraviolet rays include a low pressure mercury lamp, a high pressure mercury lamp, an ultrahigh pressure mercury lamp, a metal halide lamp, Examples include electrodeless lamps (fusion lamps), chemical lamps, black light lamps, mercury-xenon lamps, short arc lamps, helium / cadmium lasers, argon lasers, sunlight, and LEDs.
- the cyclic olefin resin film of the present invention is applicable to various applications because of its excellent optical properties, dimensional stability, heat resistance, transparency, and scratch resistance of its surface, in particular, It is useful as an optical film used in an image display unit of an image display device such as a liquid crystal display (LCD) or an organic EL display (OLED).
- LCD liquid crystal display
- OLED organic EL display
- it since it has excellent scratch resistance even if it is thin, for example, electronic notebooks, mobile phones, smartphones, portable audio players, mobile personal computers, tablet terminals, etc. It can use suitably as an optical film of the image display part of this image display apparatus.
- an optical film when using as an optical film, it can use as a protective film used for the outermost surface of the image display part of an image display apparatus, and a base material of a touch panel.
- a protective film for example, in an image display device having a configuration in which a transparent panel for protecting the image display module is provided on the upper part of an image display module such as an LCD module or an OLED module, the transparent panel By sticking to the front or back surface of the plate, it is effective for preventing damage and preventing scattering when the transparent panel is damaged.
- Adekastab LA-87 used in Preparation Example 1 was replaced with a hindered amine light stabilizer having a methacryloyl group (“Adekastab (registered trademark) LA-82” manufactured by ADEKA Corporation); 1,2,2,6,6-pentamethyl- An active energy ray-curable composition (5) was prepared in the same manner as in Preparation Example 1 except that 4-piperidyl methacrylate was changed.
- Preparation Example 6 Adeka Stab LA-87 used in Preparation Example 1 was converted to a hindered amine light stabilizer having a hindered phenol group (“TINUVIN (registered trademark) PA144” manufactured by BASF Japan Ltd .; compound represented by the following formula (1)). Except having changed, it carried out similarly to the preparation example 1, and prepared the active energy ray-curable composition (6).
- TINUVIN registered trademark
- Adekastab LA-87 used in Preparation Example 1 was replaced with a hindered amine light stabilizer (“ADEKASTAB (registered trademark) LA-81” manufactured by ADEKA Corporation); bis (1-undecanoxy-2,2,6,6-tetramethyl).
- ADEKASTAB hindered amine light stabilizer
- An active energy ray-curable composition (R4) was prepared in the same manner as in Preparation Example 1 except that piperidin-4-yl) carbonate was changed.
- Adekastab LA-87 used in Preparation Example 1 was converted to a hindered amine light stabilizer (“TINUVIN® 292” manufactured by BASF Japan Ltd.); bis (1,2,2,6,6-pentamethyl-4-piperidyl) A mixture of 70 to 80% by mass of sebacate and 20 to 30% by mass of methyl-1,2,2,6,6-pentamethyl-4-piperidylsebacate).
- a curable composition (R7) was prepared.
- Comparative Preparation Example 10 Active energy ray curability was carried out in the same manner as in Preparation Example 1 except that Adeka Stab LA-87 used in Preparation Example 1 was changed to a UV absorber (“TINUVIN (registered trademark) 384-2” manufactured by BASF Japan Ltd.). A composition (R10) was prepared.
- Cyclic olefin resin film substrate (Japan) whose surface was previously electrically treated (corona discharge treatment; output 100 W, speed 1.0 m / min) for the active energy ray-curable composition (1) obtained in Preparation Example 1. It is applied on “ZEONOR (registered trademark) film ZF16-100” (thickness: 100 ⁇ m) manufactured by ZEON Co., Ltd. using a wire bar, heated at 60 ° C.
- Example 2 to 6 and Comparative Examples 1 to 11 Except that the active energy ray-curable compositions (2) to (6) and (R1) to (R11) obtained in Preparation Examples 2 to 6 and Comparative Preparation Examples 1 to 11 were used, Example 1 and Similarly, cyclic olefin resin films (2) to (6) and (R1) to (R11) each having a cured coating film were prepared, and the resulting cyclic olefin resin films were subjected to scratch resistance, initial adhesion, And light-resistant adhesiveness was evaluated.
- Tables 1 to 3 show the compositions of the active energy ray-curable compositions prepared in Preparation Examples 1 to 6 and Comparative Preparation Examples 1 to 11 and the evaluation results of the cyclic olefin resin films obtained above.
- the compositions in Tables 1 to 3 are all described in terms of nonvolatile content.
- Comparative Examples 1 to 11 shown in Tables 2 and 3 are cyclic olefin resin films having a cured coating film of an active energy ray-curable composition that does not contain a hindered amine light stabilizer used in the present invention. These cyclic olefin resin films have a problem in practicality because at least one of scratch resistance, initial adhesion, and light adhesion is not sufficient.
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Abstract
Description
ジペンタエリスリトールヘキサアクリレート(以下、「DPHA」と略記する。)及びジペンタエリスリトールペンタアクリレート(以下、「DPPA」と略記する。)の混合物(DPHA/DPPA=65/35(質量比))100質量部、シリカ微粒子(日産化学工業株式会社製「MEK-ST40」、平均粒子径10~20nm、オルガノシリカゾル(コロイダルシリカ)の40質量%メチルエチルケトン分散液)25質量部(シリカ微粒子として10質量部)、メタクリルロイル基を有するヒンダードアミン系光安定剤(株式会社ADEKA製「アデカスタブ(登録商標) LA-87」;2,2,6,6-テトラメチル-4-ピペリジルメタクリレート)1質量部、及び1-ヒドロキシシクロヘキシルフェニルケトン(BASFジャパン株式会社製「IRGACURE(登録商標) 184」)6質量部を均一に攪拌した後、メチルエチルケトンで希釈して、不揮発分50質量%の活性エネルギー線硬化性組成物(1)を調製した。
アデカスタブ LA-87の配合量を、1質量部から0.1質量部に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(2)を調製した。
アデカスタブ LA-87の配合量を、1質量部から0.5質量部に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(3)を調製した。
アデカスタブ LA-87の配合量を、1質量部から2質量部に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(4)を調製した。
調製例1で用いたアデカスタブ LA-87を、メタクリルロイル基を有するヒンダードアミン系光安定剤(株式会社ADEKA製「アデカスタブ(登録商標) LA-82」;1,2,2,6,6-ペンタメチル-4-ピペリジルメタクリレート)に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(5)を調製した。
調製例1で用いたアデカスタブ LA-87を、ヒンダードフェノール基を有するヒンダードアミン系光安定剤(BASFジャパン株式会社製「TINUVIN(登録商標) PA144」;下記式(1)で表される化合物)に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(6)を調製した。
調製例1で用いたアデカスタブ LA-87を用いなかった以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(R1)を調製した。
調製例1で用いたアデカスタブ LA-87を、ヒンダードアミン系光安定剤(BASFジャパン株式会社製「TINUVIN(登録商標) 111FDL」;コハク酸ジメチルと4-ヒドロキシ-2,2,6,6-テトラメチル-1-ピペリジンエタノールの重合物とN,N’,N’’,N’’’-テトラキス-(4,6-ビス-(ブチル-(N-メチル-2,2,6,6-テトラメチルピペリジン-4-イル)アミノ)-トリアジン-2-イル)-4,7-ジアザデカン-1,10-ジアミンとの質量比1:1の混合物)に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(R2)を調製した。
調製例1で用いたアデカスタブ LA-87を、ヒンダードアミン系光安定剤(BASFジャパン株式会社製「TINUVIN(登録商標) 770DF」;ビス(2,2,6,6-テトラメチル-4-ピペリジル)セバシエート)に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(R3)を調製した。
調製例1で用いたアデカスタブ LA-87を、ヒンダードアミン系光安定剤(株式会社ADEKA製「アデカスタブ(登録商標) LA-81」;ビス(1-ウンデカンオキシ-2,2,6,6-テトラメチルピペリジン-4-イル)カーボネート)に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(R4)を調製した。
調製例1で用いたアデカスタブ LA-87を、ヒンダードアミン系光安定剤(BASFジャパン株式会社製「TINUVIN(登録商標) 123」;デカン二酸ビス{2,2,6,6-テトラメチル-1-(オクチルオキシ)ピペリジン-4-イル})に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(R5)を調製した。
調製例1で用いたアデカスタブ LA-87を、ヒンダードアミン系光安定剤(BASFジャパン株式会社製「TINUVIN(登録商標) 5100」;ビス(2,2,6,6-テトラメチル-1-オクチルオキシピペリジン-4-イル)-1,10-デカンジオエートと1,8-ビス[{2,2,6,6-テトラメチル-4-((2,2,6,6-テトラメチル-1-オクチルオキシピペリジン-4-イル)-デカン-1,10-ジイル)ピペリジン-1-イル}オキシ]オクタンの混合物)に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(R6)を調製した。
調製例1で用いたアデカスタブ LA-87を、ヒンダードアミン系光安定剤(BASFジャパン株式会社製「TINUVIN(登録商標) 292」;ビス(1,2,2,6,6-ペンタメチル-4-ピペリジル)セバケート70~80質量%とメチル-1,2,2,6,6-ペンタメチル-4-ピペリジルセバケート20~30質量%の混合物)に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(R7)を調製した。
調製例1で用いたアデカスタブ LA-87を、ヒンダードアミン系光安定剤(株式会社ADEKA製「アデカスタブ(登録商標) LA-52」;テトラキス(1,2,2,6,6―ペンタメチル-4-ピペリジル)ブタン-1,2,3,4-テトラカルボキシレート)に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(R8)を調製した。
調製例1で用いたアデカスタブ LA-87を、紫外線吸収剤(BASFジャパン株式会社製「TINUVIN(登録商標) 400」)に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(R9)を調製した。
調製例1で用いたアデカスタブ LA-87を、紫外線吸収剤(BASFジャパン株式会社製「TINUVIN(登録商標) 384-2」)に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(R10)を調製した。
調製例1で用いたアデカスタブ LA-87を、酸化防止剤(BASFジャパン株式会社製「IRGANOX(登録商標) 1010」)に変更した以外は調製例1と同様に行い、活性エネルギー線硬化性組成物(R11)を調製した。
上記で得られた環状オレフィン樹脂フィルム(1)の硬化塗膜の表面について、クロックメーター形摩擦試験器(直径1.0cm円形摩擦子、スチールウール#0000、荷重500g、10往復)を用いて試験を行い、試験後の硬化塗膜表面を目視で観察し、下記の基準により耐擦傷性を評価した。
A:傷が無い。
B:浅い傷が5本以下である。
C:傷が5本以下である。
D:傷が多数ある。
E:顕著に深い傷が多数ある。
上記で得られた環状オレフィン樹脂フィルム(1)の硬化塗膜表面に1mm間隔で縦、横11本の切れ目を入れて100個のマス目を作製した。次いで、セロハンテープ(ニチバン株式会社製「セロテープ(登録商標) CT-18」)をその表面に密着させた後、一気に剥がす操作を2回繰り返した。剥離せずに残った残面積比率から、下記の基準により初期密着性を評価した。なお、下記の基準でD~Fの評価となったものは、不合格と判定した。
A:残面積比率が100%である。
B:残面積比率が95%以上99%以下である。
C:残面積比率が85%以上94%以下である。
D:残面積比率が50%以上84%以下である。
E:残面積比率が35%以上49%以下である。
F:残面積比率が34%以下である。
上記で得られた環状オレフィン樹脂フィルム(1)について、サンシャインウェザオメーターによる促進耐候性試験(JIS L0891準拠し、試験条件は下記の通りである。)を実施し、試験後に上記の初期密着性の評価と同様に行い、耐光密着性を評価した。
光源:サンシャインカーボンアーク灯連続照射
温度:63℃
相対湿度:50%RH
照射時間:48時間
降雨の周期及び時間:設定なし
上記の調製例2~6及び比較調製例1~11で得られた活性エネルギー線硬化性組成物(2)~(6)及び(R1)~(R11)を用いた以外は、実施例1と同様に、それぞれの硬化塗膜を有する環状オレフィン樹脂フィルム(2)~(6)及び(R1)~(R11)を作成し、得られた環状オレフィン樹脂フィルムについて、耐擦傷性、初期密着性、及び耐光密着性を評価した。
Claims (7)
- 環状オレフィン樹脂フィルム基材の少なくとも1面に、活性エネルギー線硬化性化合物(A)と、重合性官能基を有するヒンダードアミン系光安定剤(B1)及びヒンダードフェノール基を有するヒンダードアミン系光安定剤(B2)からなる群から選ばれる少なくとも1種であるヒンダードアミン系光安定剤(B)とを必須成分として含有する活性エネルギー線硬化性組成物の硬化塗膜を有することを特徴とする環状オレフィン樹脂フィルム。
- 前記光安定剤(B1)が、2,2,6,6-テトラメチル-4-ピペリジル(メタ)アクリレート及び1,2,2,6,6-ペンタメチル-4-ピペリジル(メタ)アクリレートからなる群から選ばれる少なくとも1種である請求項1記載の環状オレフィン樹脂フィルム。
- 前記ヒンダードアミン系光安定剤(B)の含有量が、前記活性エネルギー線硬化性化合物(A)100質量部に対して、0.05~5質量部の範囲である請求項1~3のいずれか1項記載の環状オレフィン樹脂フィルム。
- 前記活性エネルギー線硬化性化合物(A)が、多官能(メタ)アクリレート(A1)を含むものである請求項1~4のいずれか1項記載の環状オレフィン樹脂フィルム。
- 前記多官能(メタ)アクリレート(A1)が、ジペンタエリスリトールヘキサ(メタ)アクリレート、ジペンタエリスリトールペンタ(メタ)アクリレート、ペンタエリスリトールテトラ(メタ)アクリレート及びペンタエリスリトールトリ(メタ)アクリレートからなる群から選ばれる少なくとも1種である請求項5記載の環状オレフィン樹脂フィルム。
- 前記活性エネルギー線硬化性組成物が、さらに無機充填剤を含有する請求項1~6のいずれか1項記載の環状オレフィン樹脂フィルム。
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