WO2011068112A1 - 易接着性熱可塑性樹脂フィルム - Google Patents
易接着性熱可塑性樹脂フィルム Download PDFInfo
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- WO2011068112A1 WO2011068112A1 PCT/JP2010/071434 JP2010071434W WO2011068112A1 WO 2011068112 A1 WO2011068112 A1 WO 2011068112A1 JP 2010071434 W JP2010071434 W JP 2010071434W WO 2011068112 A1 WO2011068112 A1 WO 2011068112A1
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Classifications
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- C08G18/797—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing carbodiimide and/or uretone-imine groups
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- 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
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- 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
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- C09D175/06—Polyurethanes from polyesters
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- 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
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- B32B2369/00—Polycarbonates
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2475/00—Presence of polyurethane
Definitions
- the present invention relates to an easily-adhesive thermoplastic resin film excellent in adhesion and heat and moisture resistance. Specifically, it is suitable as a base material for functional films such as hard coat films, antireflection films, light diffusion sheets, prismatic lens sheets, near-infrared shielding films, transparent conductive films, and antiglare films, which are mainly used for displays and the like.
- the present invention relates to an easily adhesive thermoplastic film.
- a transparent thermoplastic resin made of polyethylene terephthalate (PET), acrylic, polycarbonate (PC), triacetyl cellulose (TAC), polyolefin or the like is used as a base material for a functional film used as a liquid crystal display (LCD) member.
- a film is used.
- thermoplastic resin film When using the thermoplastic resin film as a base material for various functional films, functional layers corresponding to various uses are laminated. For example, in a liquid crystal display (LCD), a protective film (hard coat layer) that prevents scratches on the surface, an antireflection layer (AR layer) that prevents reflection of external light, and a prism layer that is used to collect and diffuse light And a functional layer such as a light diffusion layer for improving luminance.
- a protective film hard coat layer
- AR layer antireflection layer
- prism layer that is used to collect and diffuse light
- a functional layer such as a light diffusion layer for improving luminance.
- a functional layer such as a light diffusion layer for improving luminance.
- polyester films are widely used as substrates for various functional films because they are excellent in transparency, dimensional stability and chemical resistance and are relatively inexpensive.
- thermoplastic film such as a biaxially oriented polyester film or a biaxially oriented polyamide film
- the film surface is highly crystallized, so it has good adhesion to various paints, adhesives, inks, etc.
- a method of imparting easy adhesion to a base film by providing a coating layer mainly composed of various resins such as polyester, acrylic, polyurethane, and acrylic graft polyester on the surface of the thermoplastic resin film of the base Is generally known.
- an aqueous coating solution containing the resin solution or a dispersion obtained by dispersing the resin in a dispersion medium is coated on a thermoplastic resin film before completion of crystal orientation, and dried. Thereafter, the film is stretched at least in a uniaxial direction and then subjected to heat treatment to complete the orientation of the thermoplastic resin film (so-called in-line coating method), or after the production of the thermoplastic resin film, the film is water-based or solvent-based.
- a method of drying after applying a coating solution has been industrially implemented.
- LCDs displays such as PDPs
- portable devices using hard coat films as members are used in various environments, both indoors and outdoors.
- portable devices may require moisture and heat resistance that can withstand a bathroom, a hot and humid area, and the like.
- the optical functional film used for such applications is required to have high adhesion such that delamination does not occur even under high temperature and high humidity. Therefore, in the following patent document, an easy-adhesive thermoplastic resin film imparted with moisture and heat resistance is disclosed by adding a crosslinking agent to the coating solution and forming a crosslinked structure in the coating layer resin when forming the coating layer by the in-line coating method. Has been.
- JP 2000-141574 A Japanese Patent No. 3900191 Japanese Patent No. 3773738 JP 2007-253512 A JP 2000-355086 A Japanese Patent No. 2544792
- the functional film used as a member also needs to maintain adhesion for a long time even under high temperature and high humidity.
- the easy-adhesion film as disclosed in the above-mentioned patent document shows good adhesion at first, but a decrease in adhesion strength is inevitable in long-term use under high temperature and high humidity. . Due to such a decrease in adhesion, there is a problem that the initial performance is not maintained for a long time.
- the present invention provides an easily-adhesive thermoplastic resin film that hardly causes deterioration of a coating layer under high temperature and high humidity, which has been conventionally considered to be unavoidable, that is, hardly causes a decrease in adhesion under high temperature and high humidity. To do.
- the adhesiveness under high temperature and high humidity referred to in the present invention is a layer of a photocurable acrylic layer, placed in an environment of 80 ° C., 95% RH, 48 hours, and using a cutter guide with a gap interval of 2 mm, Apply 100 cell-shaped cuts that penetrate the photocurable acrylic layer to the base film on the surface of the photocurable acrylic layer, and then apply cellophane adhesive tape to the cell-shaped cut surface and rub it with an eraser to complete Means the adhesiveness when the same part is peeled off 5 times vigorously, and the adhesiveness is based on stricter criteria than the evaluation method described in JIS K5600-5-6, which is generally used. Therefore, it is a problem that the adhesiveness under such high temperature and high humidity shows the adhesiveness equal to or higher than the initial adhesiveness.
- the present inventor improves adhesion under high temperature and high humidity by using a coating layer containing a specific urethane resin and / or a specific polyester resin and a carbodiimide compound.
- a coating layer containing a specific urethane resin and / or a specific polyester resin and a carbodiimide compound.
- the present inventors have found the fact that overturns the conventional technical common sense, and have arrived at the present invention.
- it in order to improve the adhesion of the coating layer in the conventional technical common sense, it is mixed with a crosslinking agent and a resin having a functional group capable of reacting with it, and a highly crosslinked structure is formed when the coating layer is formed. It has been considered desirable to form.
- the present invention uses a urethane resin and / or polyester resin that does not substantially have a carboxylic acid group that is a functional group that reacts with a carbodiimide group, and has substantially no crosslinked structure or a low degree of crosslinking.
- the present inventors have found a fact contrary to the prior art to maintain high adhesion even under high temperature and high humidity by leaving the carbodiimide group in the coating layer in the state, and have reached the present invention.
- An easily adhesive thermoplastic resin film comprising a polyester resin substantially free of carboxylic acid groups and (b) a carbodiimide compound.
- thermoplastic resin film in which the said polyester resin contains the dicarboxylic acid component represented by following formula (1) and / or the diol component represented by following formula (2) (1) HOOC— (CH 2 ) n —COOH (where n is an integer satisfying 4 ⁇ n ⁇ 10) (2) HO— (CH 2 ) n —OH (where n is an integer satisfying 4 ⁇ n ⁇ 10) (3) The said easily adhesive thermoplastic resin film in which the said polyester resin contains naphthalene dicarboxylic acid as an acid component.
- the coating layer comprises a urethane resin having a polycarbonate polyol as a constituent component and a carbodiimide compound as main components, and the coating layer contains 0.5 to 3.5 mmol / g of carbodiimide groups.
- Plastic resin film (6)
- the coating layer is mainly composed of a polyester resin having a number average molecular weight of 15000 or more and substantially having no carboxylic acid group and a carbodiimito compound, and carbodiimide groups are contained in the coating layer in an amount of 0.3 to 3.
- the said easily-adhesive thermoplastic resin film containing 3 mmol / g.
- the coating layer is mainly composed of a urethane resin having a polycarbonate polyol as a constituent component, a polyester resin having a number average molecular weight of 15000 or more and substantially having no carboxylic acid group, and a carbodiimide compound.
- the above-mentioned easily-adhesive thermoplastic resin film containing 0.1 to 2.0 mmol / g of carbodiimide group.
- the said easily adhesive polyester film whose said carbodiimide compound is water-soluble and whose haze is 2.5% or less.
- At least one layer selected from a hard coat layer, a light diffusion layer, a prismatic lens layer, an electromagnetic wave absorption layer, a near infrared ray blocking layer, and a transparent conductive layer is formed on the coating layer of the easily adhesive thermoplastic resin film.
- the first effect of the easy-adhesive thermoplastic resin film of the present invention is excellent in adhesiveness (wet heat resistance) with the optical functional layer under high temperature and high humidity. Therefore, as a preferred embodiment, the adhesion at the high temperature and high humidity treatment is equal to or improved from the initial adhesion.
- the adhesion with the lens layer under high temperature and high humidity is good.
- the blocking resistance is excellent.
- thermoplastic resin film The thermoplastic resin constituting the thermoplastic resin film used as a base material in the present invention includes polyolefin resins such as polyethylene and polypropylene, polyamide resins such as nylon 6 and nylon 66, polyethylene terephthalate, polybutylene terephthalate, polyethylene-2,6- Naphthalate, polymethylene terephthalate, and copolymer components such as diol components such as diethylene glycol, neopentyl glycol, polyalkylene glycol, adipic acid, sebacic acid, phthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid, etc.
- a polyester resin copolymerized with a dicarboxylic acid component or the like can be used. Of these, polyester resins are preferred from the viewpoint of mechanical strength and chemical resistance.
- Polyester resins preferably used in the present invention include polyethylene terephthalate, polybutylene terephthalate, polyethylene-2,6-naphthalate, polymethylene terephthalate, and copolymer components such as diols such as diethylene glycol, neopentyl glycol, and polyalkylene glycol.
- a polyester resin obtained by copolymerizing a component, a dicarboxylic acid component such as adipic acid, sebacic acid, phthalic acid, isophthalic acid, or 2,6-naphthalenedicarboxylic acid can be used.
- the polyester resin suitably used in the present invention mainly contains at least one of polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate as a constituent component.
- polyethylene terephthalate is most preferable from the balance between physical properties and cost.
- these polyester films can improve chemical resistance, heat resistance, mechanical strength, etc. by biaxially stretching.
- the biaxially stretched polyester film may be a single layer or a multilayer. Moreover, as long as it exists in the range with the effect of this invention, each of these layers can contain various additives in a polyester resin as needed. Examples of the additive include an antioxidant, a light resistance agent, an antigelling agent, an organic wetting agent, an antistatic agent, an ultraviolet absorber, and a surfactant.
- inert particles may be included in the polyester film.
- the total light transmittance of the easily adhesive polyester film is preferably 85% or more, more preferably 87% or more, and even more preferably 88% or more. 89% or more is more preferable, and 90% or more is particularly preferable.
- the content of inert particles in the base film is as small as possible. Therefore, it is preferable to make a multilayer structure in which particles are contained only in the surface layer of the film, or to contain fine particles only in the coating layer without substantially containing particles in the film.
- an inorganic and / or heat-resistant polymer particle is contained in the aqueous coating solution in order to improve the handleability of the film. It is also preferable to form irregularities on the surface of the coating layer.
- substantially no inert particles means, for example, in the case of inorganic particles, when the element derived from the particles is quantitatively analyzed by fluorescent X-ray analysis, 50 ppm or less, preferably 10 ppm or less, Preferably, the content is below the detection limit. This means that even if particles are not actively added to the base film, contaminants derived from foreign substances and raw material resin or dirt adhering to the line or equipment in the film manufacturing process will be peeled off and mixed into the film. It is because there is a case to do.
- inert particles only to the surface layer from the viewpoint of achieving both high transparency and handling properties.
- particles are contained in the outermost layer (A layer in the case of A layer / B layer / A layer), and the center layer (B layer) is substantially free of particles. .
- the type and content of the particles contained in the outermost layer may be inorganic particles or organic particles, and are not particularly limited, but include metal oxidation such as silica, titanium dioxide, talc, and kaolinite.
- metal oxidation such as silica, titanium dioxide, talc, and kaolinite.
- examples thereof include inorganic particles that are inert to polyesters such as products, calcium carbonate, calcium phosphate, and barium sulfate. Any one of these inert inorganic particles may be used alone, or two or more thereof may be used in combination.
- the above particles preferably have an average particle size of 0.1 to 3.5 ⁇ m. If the average particle size is less than the lower limit, sufficient handling properties may not be obtained. If the upper limit is exceeded, the transparency may decrease.
- the content of inorganic particles in the outermost layer is preferably 0.01 to 0.20% by mass with respect to the polyester constituting the outermost layer. If it is less than the lower limit, sufficient handling properties cannot be obtained. When the upper limit is exceeded, the transparency decreases.
- a whitening film having a high void content may be used by adding a cavity developer in the base film.
- a molding film imparted with moldability by adding a copolymer component as a polyester resin may be used.
- the thickness of the base film used in the present invention is not particularly limited, but can be arbitrarily determined in the range of 30 to 500 ⁇ m according to the standard to be used.
- the upper limit of the thickness of the base film is preferably 350 ⁇ m, particularly preferably 250 ⁇ m.
- the lower limit of the film thickness is preferably 50 ⁇ m, more preferably 75 ⁇ m, and particularly preferably 100 ⁇ m.
- the film thickness is less than the lower limit, rigidity and mechanical strength tend to be insufficient.
- the film thickness exceeds the upper limit the cost may increase.
- the easy-adhesive thermoplastic resin film of the present invention includes (a) a urethane resin having a polycarbonate polyol as a constituent component and / or a polyester resin having a number average molecular weight of 15000 or more and having substantially no carboxylic acid group, (B) It is important to provide a coating layer containing a carbodiimide compound. Among these, a coating layer mainly composed of the above (a) and (b) is preferable.
- the “main component” means that 50% by mass or more is contained in the total solid component contained in the coating layer.
- the unreacted carbodiimide group reacts with the generated carboxylic acid terminal to form a crosslink.
- the deterioration of the coating film strength under high temperature and high humidity can be prevented by self-healing the deterioration of the coating film strength due to hydrolysis.
- the coating layer of the present invention does not contain a carboxyl group or a salt thereof, which is a functional group having high reactivity with the carbodiimide group, or its salt is very small, and therefore there are many unreacted carbodiimide groups in the coating layer.
- a functional group such as a carboxyl group is present in a resin used for a functional layer to be laminated, such as a photocurable acrylic resin and an unreacted product.
- a functional group exists also in the thermoplastic resin which is a base film. It is presumed that in a high-temperature and high-humidity environment, the interaction between the functional group and / or the carbodiimide group present in these functional layers and / or base film proceeds, and strong adhesion can be obtained.
- the present invention can improve the adhesion (humidity heat resistance) to the lens layer and other functional layers under high temperature and high humidity according to the above embodiment. Further, the configuration of the present invention will be described in detail below.
- the urethane resin used in the present invention contains at least a polyol component and a polyisocyanate component as constituent components, and further contains a chain extender as necessary.
- the urethane resin of the present invention is a polymer compound in which these constituent components are mainly copolymerized by urethane bonds.
- it has the polycarbonate polyol as a structural component of a urethane resin, It is characterized by the above-mentioned.
- Moisture heat resistance can be improved by including a urethane resin containing polycarbonate as a constituent component in the coating layer of the present invention.
- the components of these urethane resins can be specified by nuclear magnetic resonance analysis or the like.
- polycarbonate diol examples include ethylene glycol, propylene glycol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, and 3-methyl-1,5.
- a polycarbonate diol obtained by reacting one or more diols such as bisphenol-A with carbonates such as dimethyl carbonate, diphenyl carbonate, ethylene carbonate, and phosgene. And the like.
- the number average molecular weight of the polycarbonate diol is preferably 300 to 5000, and more preferably 500 to 3000.
- the composition molar ratio of the polycarbonate polyol which is a constituent component of the urethane resin, is preferably 3 to 100 mol% when the total polyisocyanate component of the urethane resin is 100 mol%, preferably 5 to 50 mol%. More preferably, it is 6 to 20 mol%.
- the composition molar ratio is low, the durability effect by the polycarbonate polyol may not be obtained.
- the said composition molar ratio is high, initial adhesiveness may fall.
- aromatic diisocyanates such as 4,4-diphenylmethane diisocyanate
- aromatic aliphatic diisocyanates such as xy
- Chain extenders include glycols such as ethylene glycol, diethylene glycol, 1,4-butanediol, neopentyl glycol and 1,6-hexanediol, polyhydric alcohols such as glycerin, trimethylolpropane, and pentaerythritol, ethylenediamine Diamines such as hexamethylenediamine and piperazine, aminoalcohols such as monoethanolamine and diethanolamine, thiodiglycols such as thiodiethylene glycol, and water.
- glycols such as ethylene glycol, diethylene glycol, 1,4-butanediol, neopentyl glycol and 1,6-hexanediol
- polyhydric alcohols such as glycerin, trimethylolpropane, and pentaerythritol
- ethylenediamine Diamines such as hexamethylenediamine and piperazine
- the coating layer of the present invention is preferably provided by an in-line coating method described later using an aqueous coating solution. Therefore, it is desirable that the urethane resin of the present invention is water-soluble. When a water-soluble urethane resin is used, compatibility with a carbodiimide compound increases, and transparency can be improved.
- the “water-soluble” means that it dissolves in water or an aqueous solution containing less than 50% by mass of a water-soluble organic solvent.
- a sulfonic acid (salt) group or a carboxylic acid (salt) group can be introduced (copolymerized) into the urethane molecular skeleton. Since the sulfonic acid (salt) group is strongly acidic and it may be difficult to maintain moisture resistance due to its hygroscopic performance, it is preferable to introduce a weakly acidic carboxylic acid (salt) group.
- a polyol compound having a carboxylic acid group such as dimethylolpropionic acid or dimethylolbutanoic acid is introduced as a copolymer component to form a salt.
- the salt forming agent include trialkylamines such as ammonia, trimethylamine, triethylamine, triisopropylamine, tri-n-propylamine, and tri-n-butylamine, N such as N-methylmorpholine and N-ethylmorpholine.
- -N-dialkylalkanolamines such as alkylmorpholines, N-dimethylethanolamine and N-diethylethanolamine. These can be used alone or in combination of two or more.
- the composition molar ratio of the polyol compound having a carboxylic acid (salt) group in the urethane resin is the same as that of the urethane resin.
- the total polyisocyanate component is 100 mol%, it is preferably 3 to 60 mol%, and more preferably 10 to 40 mol%. If the composition molar ratio is less than 3 mol%, water dispersibility may be difficult.
- the said composition molar ratio exceeds 60 mol%, since the residual carbodiimide group at the time of coating layer formation reduces, heat-and-moisture resistance may fall.
- the carbodiimide group may react with the carbodiimide group in the coating solution, and the unreacted carbodiimide group may be reduced when the coating layer is formed. Therefore, it is desirable that the coating layer has substantially no carboxylic acid (salt) group. Therefore, in order to impart water solubility to the urethane resin, it is a preferred embodiment of the present invention to introduce a polyoxyalkylene group instead of the carboxylate group.
- a coating layer does not have a carboxyl group substantially. Therefore, an unreacted carbodiimide group remains stably and can exhibit more excellent moisture and heat resistance.
- Examples of the polyoxyalkylene group introduced into the urethane resin include a polyoxyethylene group, a polyoxypropylene group, and a polytetramethylene glycol chain, and these can be used alone or in combination of two or more. Among these, a polyoxyethylene group can be preferably used.
- polyisocyanate and one-end blocked polyoxyethylene glycol (alkoxyethylene glycol whose one end is blocked with an alkyl group having 1 to 20 carbon atoms) are blocked at one end.
- the polyoxyethylene chain-containing monoisocyanate was obtained by removing the unreacted polyisocyanate if necessary. Then, the obtained polyoxyethylene chain-containing monoisocyanate and diisocyanate can be obtained by an allophanatization reaction.
- the composition molar ratio of the polyoxyethylene groups in the urethane resin is 100 mol% of the total polyisocyanate component of the urethane resin. It is preferably 3 mol% or more, more preferably 10 mol% or more, and further preferably 20 mol% or more. If the composition molar ratio is less than 3 mol%, water dispersibility may be difficult.
- the urethane resin is preferably contained in the coating layer in an amount of 10% by mass to 90% by mass.
- the urethane resin is more preferably 20% by mass or more and 80% by mass or less.
- the lower limit of the carbodiimide group concentration in the coating layer is 0.5 mmol / g, preferably 0.7 mmol / g, more preferably 1.0 mmol / g, and the upper limit. Is 3.5 mmol / g, preferably 3.3 mmol / g, more preferably 3.0 mmol / g. If the amount is less than the above lower limit, sufficient adhesiveness at high temperature and high humidity may not be obtained. When the above upper limit is exceeded, the ratio of the polycarbonate-based urethane resin becomes relatively small, and the adhesiveness, particularly the initial adhesiveness, may be lowered.
- the polyester resin used in the present invention preferably has fewer carboxylic acid groups which are reactive groups with carbodiimide groups. More preferably, it has substantially no carboxylic acid group.
- having substantially no carboxylic group means that it contains no carboxylic acid group other than the terminal group.
- an acid value can be measured.
- the polyester resin having substantially no carboxylic acid group has an acid value of 3 KOHmg / g or less, more preferably 2 KOHmg / g or less. More preferably, it is a polyester resin of 1 KOHmg / g or less.
- the number average molecular weight of the polyester resin needs to be 15000 or more.
- the number average molecular weight is low, the terminal carboxylic acid group increases, which may cause a reaction with a carbodiimide group.
- the hydrolysis is accelerated, the coating film is not sufficiently repaired, and not only the adhesiveness under high temperature and high humidity is not obtained, but also the adhesiveness with the substrate film is lowered.
- the number average molecular weight is more preferably 20000 or more, and it is preferably higher as long as it can be produced.
- the number average molecular weight is preferably 60000 or less because the solubility in the coating solution may be reduced as the number average molecular weight increases.
- Polyester resin has acid components such as terephthalic acid, isophthalic acid, phthalic acid, phthalic anhydride, 2,6-naphthalenedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, adipic acid, sebacic acid, trimellitic acid, pyromellitic acid, Examples include dimer acid, 5-sodium sulfoisophthalic acid, 4-sodium sulfonaphthalene-2,7-dicarboxylic acid, and the like.
- Diol components include ethylene glycol, propane glycol, 1,4-butanediol, neopentyl glycol, diethylene glycol, 1,6-hexanediol, 1,4-cyclohexanedimethanol, xylene glycol, ethylene oxide adducts of bisphenol A, etc. Is mentioned.
- a hard coat layer mainly made of an acrylic resin is provided on the film of the present invention, interference fringes are generated due to the difference in refractive index between the coating layer and the other layer, which may cause a problem in terms of visibility.
- the dicarboxylic acid component of following formula (1) and / or the diol component of following formula (2) may contain the dicarboxylic acid component of following formula (1) and / or the diol component of following formula (2) as a component of a polyester resin.
- the dicarboxylic acid component of the following formula (1) and / or the diol component of the following formula (2) in the polyester resin is preferably 10% or more, more preferably 15% or more, and further preferably 20% or more.
- the dicarboxylic acid component of the following formula (1) and / or the diol component of the following formula (2) in the polyester resin is preferably 70% or less, more preferably 60% or less, and further preferably 50% or less.
- a coating film When exceeding the said upper limit, a coating film may become soft too much and heat-and-moisture resistance may fall. When it is less than the above lower limit, the flexibility of the polyester resin is lowered, the coating film becomes too hard, and the adhesion may be lowered.
- the polyester resin is based on water or a water-soluble organic solvent (for example, an aqueous solution containing less than 50% by weight of alcohol, alkyl cellosolve, ketone, or ether) or an organic solvent (for example, toluene, ethyl acetate, etc.). Those dissolved or dispersed can be used.
- a water-soluble organic solvent for example, an aqueous solution containing less than 50% by weight of alcohol, alkyl cellosolve, ketone, or ether
- an organic solvent for example, toluene, ethyl acetate, etc.
- a water-soluble or water-dispersible polyester resin is used.
- a compound containing a sulfonate group or a carboxyl group is used. It is preferable to copolymerize a compound containing an acid base. Therefore, in addition to the dicarboxylic acid component described above, in order to impart water dispersibility to the polyester, it is preferable to use 5-sulfoisophthalic acid or an alkali metal salt thereof in the range of 1 to 10 mol%.
- the molar ratio of the third component having three or more carboxyl groups / one molecule or three or more hydroxyl groups / one molecule is 5.0 mol% or less in the total dicarboxylic acid component. Preferably, it is 1.0 mol% or less more preferably.
- the polyester resin is preferably contained in the coating layer in an amount of 10% by mass to 85% by mass.
- high adhesiveness it is more preferably 20% by mass or more and 80% by mass or less.
- the lower limit of the carbodiimide group concentration in the coating layer is 0.3 mmol / g, preferably 0.5 mmol / g, more preferably 0.8 mmol / g, and the upper limit. Is 3.3 mmol / g, preferably 3.0 mmol / g, more preferably 2.8 mmol / g. If the amount is less than the above lower limit, sufficient adhesiveness at high temperature and high humidity may not be obtained. When the upper limit is exceeded, the ratio of the polyester resin becomes relatively small, and the adhesion, particularly the initial adhesion, may be lowered.
- the polycarbonate-based urethane resin having excellent durability and the polyester resin are used to improve the coating film hardness and exhibit excellent blocking resistance as well as adhesion. Can do.
- the polyester resin preferably has a low glass transition temperature from the viewpoint of adhesion, but preferably has a high glass transition temperature from the viewpoint of blocking resistance. Therefore, the glass transition temperature of the polyester resin is preferably 10 to 100 ° C., and more preferably 30 to 70 ° C. When the glass transition temperature is higher than 100 ° C., the melt viscosity becomes high, and it is difficult to obtain a product having a sufficient molecular weight, so that the adhesiveness is lowered. When the glass transition temperature is lower than 10 ° C., the blocking resistance of the film is lowered.
- the molar ratio of the third component having three or more carboxyl groups / one molecule or three or more hydroxyl groups / one molecule is 5.0 mol% or less in the total dicarboxylic acid component. Preferably, it is 1.0 mol% or less more preferably.
- the concentration of the polyurethane resin and the polyester resin is preferably 10% by mass to 80% by mass in the coating layer.
- high adhesiveness it is more preferably 20% by mass or more and 70% by mass or less.
- the content of the urethane resin is large, the adhesiveness under high temperature and high humidity is lowered, and conversely, when the content is small, the initial adhesiveness is lowered.
- the adhesiveness under high temperature, high humidity falls, and conversely, when there is little content, adhesiveness with a base film and blocking resistance fall.
- the lower limit of the carbodiimide group concentration in the coating layer is 0.1 mmol / g, preferably 0.2 mmol / g, more preferably 0.4 mmol / g.
- the upper limit is 2.0 mmol / g, preferably 1.8 mmol / g, more preferably 1.5 mmol / g. If the amount is less than the above lower limit, sufficient adhesiveness at high temperature and high humidity may not be obtained. When the above upper limit is exceeded, the ratio of the urethane resin and the polyester resin becomes relatively small, and the adhesiveness, particularly the initial adhesiveness, may be lowered.
- a resin other than the urethane resin and / or the polyester resin may be contained in order to improve adhesion.
- an acrylic resin, a polyester resin, etc. are mentioned.
- the carboxylic acid group content is low. More preferably, it does not contain a carboxylic acid group. When there are many carboxylic acid groups, it will react with a carbodiimide group, and the carbodiimide group which reacts with the carboxylic acid group generated from a urethane resin under high temperature and high humidity will decrease.
- Carbodiimide compound In the present invention, it is necessary to contain a carbodiimide compound.
- the carbodiimide compound include a monocarbodiimide compound and a polycarbodiimide compound.
- monocarbodiimide compounds include dicyclohexylcarbodiimide, diisopropylcarbodiimide, dimethylcarbodiimide, diisobutylcarbodiimide, dioctylcarbodiimide, t − butylisopropylcarbodiimide, diphenylcarbodiimide, di − t − butylcarbodiimide, di − ⁇ − naphthylcarbodiimide and the like.
- polycarbodiimide compound those produced by a conventionally known method can be used.
- it can be produced by synthesizing an isocyanate-terminated polycarbodiimide by a condensation reaction involving decarbonization of diisocyanate.
- diisocyanate that is a raw material for synthesizing a polycarbodiimide compound
- diisocyanate examples include isomers of toluylene diisocyanate, aromatic diisocyanates such as 4,4-diphenylmethane diisocyanate, aromatic aliphatic diisocyanates such as xylylene diisocyanate, isophorone diisocyanate and 4 Alicyclic diisocyanates such as 1,4-dicyclohexylmethane diisocyanate and 1,3-bis (isocyanatemethyl) cyclohexane, and aliphatic diisocyanates such as hexamethylene diisocyanate and 2,2,4-trimethylhexamethylene diisocyanate. From the problem of yellowing, aromatic aliphatic diisocyanates, alicyclic diisocyanates, and aliphatic diisocyanates are preferred.
- the diisocyanate may be used with a molecule controlled to an appropriate degree of polymerization using a compound that reacts with a terminal isocyanate such as monoisocyanate.
- a compound that reacts with a terminal isocyanate such as monoisocyanate.
- monoisocyanates for sealing the ends of polycarbodiimide and controlling the degree of polymerization thereof include phenyl isocyanate, toluylene isocyanate, dimethylphenyl isocyanate, cyclohexyl isocyanate, butyl isocyanate, and naphthyl isocyanate.
- a compound having an —OH group, —NH 2 group, —COOH group, or —SO 2 H group can be used as a terminal blocking agent.
- the condensation reaction accompanied by decarbonization of diisocyanate proceeds in the presence of a carbodiimidization catalyst.
- the catalyst include 1 − phenyl − 2 − phospholene − 1 − oxide, 3 − methyl − 2 − phospholene − 1 − Oxide, 1 − ethyl − 2 − phospholene − 1 − oxide, 3 − methyl − 1 − phenyl − 2 − phospholene − 1 − Oxides and phospholene isomers such as these 3 − phospholene isomers, etc., and 3 − Me
- the mono- or polycarbodiimide compound described above is desirably kept in a uniform dispersed state when blended with an aqueous coating material.
- it is emulsified with an appropriate emulsifier and used as an emulsion, or a polycarbodiimide compound.
- the carbodiimide compound used in the present invention includes water dispersibility and water solubility.
- Water solubility is preferred because it is highly compatible with other water-soluble resins and improves the transparency of the coating layer and the crosslinking reaction efficiency.
- the degree of polymerization (n) of the polycarbodiimide compound is preferably 2 to 10, more preferably 3 to 7.
- the degree of polymerization is small, the crosslinking reaction rate is deteriorated and the adhesion with the functional layer is lowered.
- the degree of polymerization is large, the compatibility with the resin is deteriorated and haze may be increased.
- an isocyanate-terminated polycarbodiimide is synthesized by a condensation reaction involving decarbonization of isocyanate, and then a hydrophilic part having a functional group having reactivity with an isocyanate group is added. Can be manufactured.
- hydrophilic sites include (1) quaternary ammonium salts of dialkylamino alcohols and quaternary ammonium salts of dialkylaminoalkylamines, (2) alkyl sulfonates having at least one reactive hydroxyl group, and the like (3)
- examples thereof include poly (ethylene oxide) end-capped with an alkoxy group, poly (propylene oxide), a mixture of poly (ethylene oxide) and poly (propylene oxide), and the like.
- the repeating unit of ethylene oxide and / or propylene oxide is preferably 3 to 50, more preferably 5 to 35. When the repeating unit is small, the compatibility with the resin is deteriorated and the haze is increased.
- the carbodiimide compound is (1) cationic, (2) anionic, and (3) nonionic when the above hydrophilic moiety is introduced.
- the nonionic property which can be compatible regardless of the ionicity of other water-soluble resin is preferable.
- transduce an ionic hydrophilic group is preferable.
- the carbodiimide equivalent of the carbodiimide compound used in the present invention is not particularly limited, but specifically, for example, it is preferably 1000 or less, more preferably 500 or less, and even more preferably 300 or less. is there.
- the said carbodiimide equivalent exceeds an upper limit, sufficient interaction with a carboxyl group etc. contained in a base film or a functional layer is not expressed, but durability and water resistance may not be obtained satisfactorily.
- the said carbodiimide equivalent shall be a chemical formula amount per 1 mol of carbodiimide groups. Therefore, the smaller the carbodiimide equivalent value, the larger the amount of carbodiimide groups in the polymer, and the larger the value, the smaller the amount of carbodiimide groups in the polymer.
- the carbodiimide compound is preferably contained in the coating layer in an amount of 5% by mass to 90% by mass. More preferably, it is 10% by mass or more and 70% by mass or less.
- the content of the carbodiimide compound is large, the adhesion with the functional layer is lowered, and conversely, when the content is small, the adhesion under high temperature and high humidity may be lowered.
- the coating layer may contain a crosslinking agent different from the carbodiimide compound or a resin having a crosslinking group.
- the crosslinking agent include urea, epoxy, melamine, isocyanate, oxazoline, silanol and the like.
- a catalyst etc. are used suitably as needed.
- particles may be contained in the coating layer.
- Particles are (1) silica, kaolinite, talc, light calcium carbonate, heavy calcium carbonate, zeolite, alumina, barium sulfate, carbon black, zinc oxide, zinc sulfate, zinc carbonate, titanium dioxide, zirconium dioxide, tin oxide, satin White, titanium black, aluminum silicate, diatomaceous earth, calcium silicate, aluminum hydroxide, hydrous halloysite, magnesium carbonate, magnesium hydroxide, inorganic particles, (2) acrylic or methacrylic, vinyl chloride, vinyl acetate, Nylon, styrene / acrylic, styrene / butadiene, polystyrene / acrylic, polystyrene / isoprene, polystyrene / isoprene, methyl methacrylate / butyl methacrylate, melamine, polycarbonate, urea , Epoxy, urethane,
- the particles preferably have an average particle diameter of 1 to 500 nm.
- the average particle size is not particularly limited, but is preferably 1 to 100 nm from the viewpoint of maintaining the transparency of the film.
- the particles may contain two or more kinds of particles having different average particle diameters.
- said average particle diameter measures the maximum diameter of the 10 or more particle
- TEM transmission electron microscope
- the particle content is preferably 0.5% by mass or more and 20% by mass or less.
- the amount is small, sufficient blocking resistance cannot be obtained. Further, scratch resistance is deteriorated.
- the amount is large, not only the transparency of the coating layer is deteriorated, but also the coating strength is lowered.
- the coating layer may contain a surfactant for the purpose of improving leveling properties during coating and defoaming the coating solution.
- the surfactant may be any of cationic, anionic and nonionic surfactants, but is preferably a silicon-based, acetylene glycol-based or fluorine-based surfactant. These surfactants are preferably contained in a range that does not impair the adhesion to the functional layer, for example, 0.005 to 0.5% by mass in the coating solution.
- the easily adhesive polyester film of the present invention preferably has a haze value of 2.5% or less, more preferably 2.0% or less, and even more preferably 1.5% or less.
- Such an easily adhesive thermoplastic resin film can be improved in compatibility with other resins by making the carbodiimide compound contained in the coating layer described above water-soluble.
- additives may be contained within a range that does not impair the adhesion to the functional layer.
- the additive include fluorescent dyes, fluorescent brighteners, plasticizers, ultraviolet absorbers, pigment dispersants, foam suppressors, antifoaming agents, preservatives, and antistatic agents.
- a method of applying a coating solution containing a solvent, particles, and a resin to a polyester film and drying may be mentioned.
- the solvent include organic solvents such as toluene, water, or a mixed system of water and a water-soluble organic solvent.
- water alone or a mixture of a water-soluble organic solvent and water is used from the viewpoint of environmental problems. preferable.
- the laminated thermoplastic resin film of the present invention comprises a hard coat layer, a light diffusion layer, a prismatic lens layer, an electromagnetic wave absorption layer, a near-infrared shielding layer, and a transparent conductive layer on at least one surface of the above-mentioned thermoplastic resin film coating layer. It is obtained by at least one optical functional layer selected.
- the material used for the optical functional layer is not particularly limited.
- PET polyethylene terephthalate
- the PET resin After sufficiently drying the PET resin in a vacuum, it is supplied to an extruder, melted and extruded at about 280 ° C. from a T-die into a rotating cooling roll into a sheet, cooled and solidified by an electrostatic application method, and unstretched PET. Get a sheet.
- the unstretched PET sheet may have a single layer structure or a multilayer structure by a coextrusion method. Moreover, it is preferable not to contain an inert particle substantially in PET resin.
- the obtained unstretched PET sheet is stretched 2.5 to 5.0 times in the longitudinal direction with a roll heated to 80 to 120 ° C. to obtain a uniaxially stretched PET film. Further, the end of the film is gripped with a clip, led to a hot air zone heated to 70 to 140 ° C., and stretched 2.5 to 5.0 times in the width direction. Subsequently, the film is guided to a heat treatment zone of 160 to 240 ° C., and heat treatment is performed for 1 to 60 seconds to complete crystal orientation.
- a coating solution is applied to at least one surface of the PET film to form the coating layer.
- the solid concentration of the resin composition in the coating solution is preferably 2 to 35% by weight, particularly preferably 4 to 15% by weight.
- any known method can be used as a method for applying this coating solution to the PET film.
- reverse roll coating method gravure coating method, kiss coating method, die coater method, roll brush method, spray coating method, air knife coating method, wire bar coating method, pipe doctor method, impregnation coating method, curtain coating method, etc. It is done. These methods are applied alone or in combination.
- the coating layer is formed by applying the coating solution to an unstretched or uniaxially stretched PET film, drying it, stretching it at least in a uniaxial direction, and then performing a heat treatment.
- the thickness of the finally obtained coating layer is preferably 20 to 350 nm, and the coating amount after drying is preferably 0.02 to 0.5 g / m 2 .
- the coating amount of the coating layer is less than 0.02 g / m 2 , the effect on adhesiveness is almost lost.
- the coating amount exceeds 0.5 g / m 2 , haze increases.
- the coating layer of the easy-adhesive thermoplastic resin film obtained in the present invention has good adhesion to a hard coat layer, a light diffusion layer, a prismatic lens layer, an electromagnetic wave absorption layer, a near-infrared shielding layer, and a transparent conductive layer.
- a hard coat layer a hard coat layer
- a prismatic lens layer a prismatic lens layer
- an electromagnetic wave absorption layer a near-infrared shielding layer
- a transparent conductive layer a transparent conductive layer.
- adhesion such as photographic photosensitive layer, diazo photosensitive layer, matte layer, magnetic layer, inkjet ink receiving layer, hard coat layer, UV curable resin, thermosetting resin, printing ink and UV ink, dry laminate, extrusion laminate, etc.
- adhesion such as photographic photosensitive layer, diazo photosensitive layer, matte layer, magnetic layer, inkjet ink receiving layer, hard coat layer, UV curable resin, thermosetting resin, printing ink and UV ink, dry laminate, extrusion laminate, etc.
- examples thereof include vacuum deposition, electron beam deposition, sputtering, ion plating, CVD, plasma polymerization and the like of an agent, a metal or an inorganic substance, or an oxide thereof, and an organic barrier layer.
- Resin composition The resin was dissolved in deuterated chloroform and subjected to 1 H-NMR analysis using a nuclear magnetic resonance analyzer (NMR) Gemini-200 manufactured by Varian, Inc. From the integration ratio, 100 moles of all isocyanate components were obtained. The mole% ratio of each composition was determined.
- NMR nuclear magnetic resonance analyzer
- Number average molecular weight 0.03 g of a resin was dissolved in 10 ml of tetrahydrofuran, and a GPC-LALLS apparatus low angle light scattering photometer LS-8000 (manufactured by Tosoh Corporation, tetrahydrofuran solvent, reference: polystyrene) was used.
- the number average molecular weight was measured using a column (showex KF-802, 804, 806 manufactured by Showa Denko KK) at a flow rate of 1 ml / min.
- Acid value 1 g (solid content) of a sample was dissolved in 30 ml of chloroform or dimethylformamide, and titrated with 0.1 N potassium hydroxide ethanol solution using phenolphthalein as an indicator to determine the carboxyl groups per gram of the sample. The amount (mg) of KOH required for neutralization was determined.
- Carbodiimide value The carbodiimide compound was freeze-dried and analyzed by 1 H-NMR, and the carbodiimide value was calculated from the absorption peak intensity derived from the carbodiimide group and the absorption peak intensity derived from other monomers.
- Total light transmittance of easy-adhesive polyester film The total light transmittance of the obtained easily-adhesive polyester film was measured using a turbidimeter (Nippon Denshoku, NDH2000) in accordance with JIS K 7105. .
- the absorbance derived from the carbodiimide group is the height of the absorption peak having an absorption maximum in the region of 2120 ⁇ 10 cm ⁇ 1 (A 2120 ), and the absorbance derived from PET has the absorption maximum in the region of 1340 ⁇ 10 cm ⁇ 1.
- the height of the absorption peak (A 1340 ) was used.
- the base line was a line connecting the sleeves on both sides of each maximum absorption peak.
- the thickness of the coating layer was determined with a transmission electron microscope.
- a sample of the laminated film was embedded in a visible light curable resin (D-800 manufactured by Nippon Shin-EM Co., Ltd.) and cured by exposure to visible light at room temperature.
- an ultrathin section having a thickness of about 70 to 100 nm was prepared using an ultramicrotome equipped with a diamond knife, and stained in ruthenium tetroxide vapor for 30 minutes. Furthermore, after performing carbon vapor deposition, the cross section was observed using the transmission electron microscope (the JEOL Co., Ltd. make, TEM2010), the photograph was image
- the carbodiimide group concentration in the coating layer was determined using a calibration curve prepared from a standard sample that had been coated in advance with a coating solution with a known carbodiimide concentration and air-dried. Asked.
- the mixture was adjusted so that the fixed component concentration was 30% by mass), and the coating layer after drying was applied so that the thickness of the coating layer was 50 nm, 100 nm, and 200 nm.
- the infrared absorbance ratio A 2120 / A 1340 was measured by external spectroscopy, and the following primary formula consisting of three variables of oxazoline group concentration, coating layer thickness, infrared absorbance ratio A 2120 / A 1340 was obtained from the obtained results. This was used as a calibration curve.
- Carbodiimide concentration A ⁇ (infrared absorbance ratio A 2120 / A 1340 ) / (coating layer thickness) + B (Here, A and B are constants obtained from the data obtained by creating the calibration curve)
- Adhesiveness (%) (1 ⁇ number of peeled squares / 100) ⁇ 100 ⁇ : 100% or photocuring acrylic layer material failure ⁇ : 99-90% ⁇ : 89-70% ⁇ : 69 to 0%
- the results of visual observation are ranked according to the following criteria. The observation is performed by five people who are familiar with the evaluation, and the highest rank is the evaluation rank. If two ranks have the same number, the center of the rank divided into three is adopted. ⁇ : Almost no iris color is seen ⁇ : Slightly iris color is observed ⁇ : Clear iris color is observed
- copolyester resin (A-1) was light yellow and transparent.
- the reduced viscosity of the obtained copolyester resin (A-1) was measured and found to be 0.70 dl / g.
- the glass transition temperature by DSC was 40 ° C.
- copolymer polyester resins (A-2) to (A-7) having different compositions were obtained.
- Table 1 shows the composition (mole% ratio) and other characteristics of these copolyester resins measured by 1 H-NMR.
- water-soluble polyurethane resins (D-3) to (D-4) having different compositions were obtained.
- Table 2 shows the composition (mole% ratio) and other characteristics measured by 1 H-NMR for these water-soluble polyurethane resins.
- Example 1 Adjustment of coating liquid The following coating agent was mixed and the coating liquid was created.
- the polyester resin has a number average molecular weight of 20000.
- Polyester aqueous dispersion (B-1) 13.16% by mass
- Water-soluble carbodiimide compound (C-1) 4.23% by mass Particles 0.71% by mass (Silica sol with an average particle size of 40 nm, solid content concentration of 40% by mass) 0.07% by mass of particles (Silica sol with an average particle size of 450 nm, solid content concentration of 40% by mass)
- Surfactant 0.05% by mass (Silicon, solid content concentration of 100% by mass)
- the unstretched PET sheet was heated to 100 ° C. with a heated roll group and an infrared heater, and then stretched 3.5 times in the longitudinal direction with a roll group having a difference in peripheral speed to obtain a uniaxially stretched PET film.
- a coating liquid for forming a hard coat layer (C-1) having the following composition was applied to the coating layer surface of the above-mentioned easy-adhesive polyester film using a # 10 wire bar. Dry for minutes to remove the solvent. Next, the film coated with the hard coat layer was irradiated with 300 mJ / cm 2 ultraviolet rays using a high-pressure mercury lamp to obtain a laminated polyester film having a hard coat layer with a thickness of 5 ⁇ m.
- Comparative Example 1 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 1 except that the polyester aqueous dispersion was changed to a polyester water dispersion (B-6) having a molecular weight of 8000.
- Comparative Example 2 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 1 except that the polyester aqueous dispersion was changed to a polyester aqueous dispersion (B-7) having an acid value of 50 KOHmg / g.
- Comparative Example 3 An easy-adhesive polyester film and a laminated polyester film were prepared in the same manner as in Example 1 except that the water-soluble carbodiimide compound (C-1) was changed to an epoxy compound (Denacol EX-521, solid content concentration: 100%, manufactured by Nagase ChemteX Corporation). Obtained.
- Comparative Example 4 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 1 except that the water-soluble carbodiimide compound (C-1) was changed to a melamine compound (Becamine M-3 solid content concentration: 60%, manufactured by DIC). .
- Example 2 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 1 except that the coating solution was changed to the following.
- Water 51.31% by mass Isopropanol 30.00% by mass Polyester water dispersion (B-1) 15.04 mass%
- Water-soluble carbodiimide compound (C-1) 2.82% by mass Particles 0.71% by mass (Silica sol with an average particle size of 40 nm, solid content concentration of 40% by mass) 0.07% by mass of particles (Silica sol with an average particle size of 450 nm, solid content concentration of 40% by mass)
- Example 3 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 1 except that the coating solution was changed to the following.
- Water 53.19% by mass Isopropanol 30.00% by mass Polyester water dispersion (B-1) 7.52% by mass
- Water-soluble carbodiimide compound (C-1) 8.46% by mass Particles 0.71% by mass (Silica sol with an average particle size of 40 nm, solid content concentration of 40% by mass) 0.07% by mass of particles (Silica sol with an average particle size of 450 nm, solid content concentration of 40% by mass)
- Example 4 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 1 except that the coating solution was changed to the following.
- Water 53.66% by mass Isopropanol 30.00% by mass Polyester aqueous dispersion (B-1) 5.64% by mass
- Water-soluble carbodiimide compound (C-1) 9.87% by mass Particles 0.71% by mass (Silica sol with an average particle size of 40 nm, solid content concentration of 40% by mass) 0.07% by mass of particles (Silica sol with an average particle size of 450 nm, solid content concentration of 40% by mass)
- Surfactant 0.05% by mass (Silicon, solid content concentration of 100% by mass)
- Example 5 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 1 except that the water-soluble carbodiimide compound (C-1) was changed to the water-soluble carbodiimide compound (C-2).
- Example 6 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 1 except that the water-soluble carbodiimide compound (C-1) was changed to the water-soluble carbodiimide compound (C-3).
- Example 7 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 1 except that the polyester aqueous dispersion was changed to a polyester aqueous dispersion (B-2) having a molecular weight of 15000.
- Example 8 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 1 except that the polyester aqueous dispersion was changed to a polyester aqueous dispersion (B-3) having a molecular weight of 23,000.
- Example 9 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 1 except that the polyester water dispersion was changed to a polyester water dispersion (B-4) having a molecular weight of 46000.
- Example 10 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 1 except that the polyester aqueous dispersion was changed to a polyester aqueous dispersion (B-5) having a molecular weight of 50000.
- Example 11 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 1 except that the water-soluble carbodiimide compound (C-1) was changed to the water-dispersible carbodiimide compound (C-4).
- Example 12 (1) Adjustment of coating liquid The following coating agent was mixed and the coating liquid was created. Water 53.66% by mass Isopropanol 30.00% by mass Polyurethane resin (D-1) 11.28% by mass Water-soluble carbodiimide compound (C-1) 4.23 mass% Particles 0.71% by mass (Silica sol with an average particle size of 40 nm, solid content concentration of 40% by mass) 0.07% by mass of particles (Silica sol with an average particle size of 450 nm, solid content concentration of 40% by mass) Surfactant 0.05% by mass (Silicon, solid content concentration of 100% by mass)
- the unstretched PET sheet was heated to 100 ° C. with a heated roll group and an infrared heater, and then stretched 3.5 times in the longitudinal direction with a roll group having a difference in peripheral speed to obtain a uniaxially stretched PET film.
- Comparative Example 5 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 12 except that the polyurethane resin was changed to a polyurethane resin (D-5) containing polyester polyol as a constituent component.
- Comparative Example 6 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 12 except that the polyurethane resin was changed to a polyurethane resin (D-6) containing polyether polyol as a constituent component.
- Comparative Example 7 An easily adhesive polyester film and a laminated polyester film were prepared in the same manner as in Example 12 except that the water-soluble carbodiimide compound (C-1) was changed to an epoxy compound (Denacol EX-521, solid content concentration 100%, manufactured by Nagase ChemteX Corporation). Obtained.
- Comparative Example 8 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 12 except that the water-soluble carbodiimide compound (C-1) was changed to a melamine compound (Becamine M-3 solid content concentration: 60% by DIC). .
- Example 13 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 12 except that the coating solution was changed to the following.
- Polyurethane resin (D-1) 12.89% by mass
- Water-soluble carbodiimide compound (C-1) 2.82% by mass Particles 0.71% by mass (Silica sol with an average particle size of 40 nm, solid content concentration of 40% by mass) 0.07% by mass of particles (Silica sol with an average particle size of 450 nm, solid content concentration of 40% by mass)
- Example 14 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 12 except that the coating solution was changed to the following.
- Water 54.26% by mass Isopropanol 30.00% by mass Polyurethane resin (D-1) 6.45% by mass
- Water-soluble carbodiimide compound (C-1) 8.46% by mass Particles 0.71% by mass (Silica sol with an average particle size of 40 nm, solid content concentration of 40% by mass) 0.07% by mass of particles (Silica sol with an average particle size of 450 nm, solid content concentration of 40% by mass)
- Example 15 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 12 except that the coating solution was changed to the following.
- Water 54.47% by mass Isopropanol 30.00% by mass Polyurethane resin (D-1) 4.83% by mass
- Water-soluble carbodiimide compound (C-1) 9.87% by mass Particles 0.71% by mass (Silica sol with an average particle size of 40 nm, solid content concentration of 40% by mass) 0.07% by mass of particles (Silica sol with an average particle size of 450 nm, solid content concentration of 40% by mass)
- Example 16 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 12 except that the water-soluble carbodiimide compound (C-1) was changed to the water-soluble carbodiimide compound (C-2).
- Example 17 An easy-adhesive polyester film and a laminated polyether film were obtained in the same manner as in Example 12 except that the water-soluble carbodiimide compound (C-1) was changed to the water-soluble carbodiimide compound (C-3).
- Example 18 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 12 except that the polyurethane resin (D-1) was changed to the polyurethane resin (D-2).
- Example 19 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 12 except that the polyurethane resin (D-1) was changed to the polyurethane resin (D-3).
- Example 20 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 12 except that the polyurethane resin (D-1) was changed to the polyurethane resin (D-4).
- Example 21 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 12 except that the water-soluble carbodiimide compound (C-1) was changed to the water-dispersible carbodiimide compound (C-4).
- Example 22 (1) Adjustment of coating liquid The following coating agent was mixed and the coating liquid was created. Water 52.65% by mass Isopropanol 30.00% by mass Polyester resin (B-2) 7.15% by mass Polyurethane resin (D-1) 6.95% by mass Water-soluble carbodiimide compound (C-1) 1.35% by mass 1.35% by mass of particles (Silica sol with an average particle size of 40 nm, solid content concentration of 40% by mass) 0.54% by mass of particles (Silica sol with an average particle size of 450 nm, solid content concentration of 40% by mass)
- the unstretched PET sheet was heated to 100 ° C. with a heated roll group and an infrared heater, and then stretched 3.5 times in the longitudinal direction with a roll group having a difference in peripheral speed to obtain a uniaxially stretched PET film.
- Photo-curing acrylic coating solution Photo-curing acrylic resin 60.00% by mass (Shin Nakamura Chemical 4G) Photo-curing acrylic resin 20.00% by mass (Shin Nakamura Chemical A-TMMT) Photo-curing acrylic resin 10.00% by mass (Shin-Nakamura Chemical A-BPE-4) Photo-curing acrylic resin 8.00% by mass (Shin Nakamura Chemical U-6HA) Photopolymerization initiator 2.00% by mass (Irgacure 184 manufactured by Ciba Specialty Chemicals)
- Example 23 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 22 except that the polyester water dispersion was changed to a polyester water dispersion (B-1) having a molecular weight of 20000.
- Example 24 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 22 except that the polyester water dispersion was changed to a polyester water dispersion (B-3) having a molecular weight of 23000.
- Example 25 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 22 except that the coating solution was changed to the following. 52.54% by mass of water Isopropanol 30.00% by mass Polyester resin (B-2) 7.55 mass% Polyurethane resin (D-1) 7.34% by mass Water-soluble carbodiimide compound (C-1) 0.68% by mass 1.35% by mass of particles (Silica sol with an average particle size of 40 nm, solid content concentration of 40% by mass) 0.54% by mass of particles (Silica sol with an average particle size of 450 nm, solid content concentration of 40% by mass)
- Example 26 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 22 except that the coating solution was changed to the following.
- Example 27 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 22 except that the coating solution was changed to the following.
- Example 28 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 22 except that the coating solution was changed to the following. 52.56% by mass of water Isopropanol 30.00% by mass Polyester resin (B-2) 10.33% by mass Polyurethane resin (D-1) 3.86% by mass Water-soluble carbodiimide compound (C-1) 1.35% by mass 1.35% by mass of particles (Silica sol with an average particle size of 40 nm, solid content concentration of 40% by mass) 0.54% by mass of particles (Silica sol with an average particle size of 450 nm, solid content concentration of 40% by mass)
- Example 29 An easy-adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 22 except that the coating solution was changed to the following.
- Polyurethane resin (D-1) 10.04% by mass
- Water-soluble carbodiimide compound (C-1) 1.35% by mass 1.35% by mass of particles (Silica sol with an average particle size of 40 nm, solid content concentration of 40% by mass) 0.54% by mass of particles (Silica sol with an average particle size of 450 nm, solid content concentration of 40% by mass)
- Example 30 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 22 except that the water-soluble carbodiimide compound (C-1) was changed to the water-soluble carbodiimide compound (C-3).
- Example 31 An easily adhesive polyester film and a laminated polyester film were obtained in the same manner as in Example 22 except that the water-soluble carbodiimide compound (C-1) was changed to the water-dispersible carbodiimide compound (C-4).
- the easily adhesive polyester film of the present invention is excellent in adhesion with an optical functional layer and adhesion under high temperature and high humidity (moisture and heat resistance), so that it is mainly used for displays and the like, and a reflection using the film. It is suitable as a base film for optical functional films such as prevention films, light diffusion sheets, prismatic lens sheets, near-infrared shielding films, transparent conductive films, and antiglare films.
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Abstract
Description
(1)基材フィルムの少なくとも片面に塗布層を有する易接着性熱可塑性樹脂フィルムであり、前記塗布層が、(a)ポリカーボネートポリオールを構成成分とするウレタン樹脂および/もしくは数平均分子量15000以上であって実質的にカルボン酸基を有さないポリエステル樹脂と、(b)カルボジイミド化合物を含有する、易接着性熱可塑性樹脂フィルム。
(2)前記ウレタン樹脂がポリオキシアルキレン基を有する、上記易接着性熱可塑性樹脂フィルム。
(3)前記ポリエステル樹脂が下記式(1)で表されるジカルボン酸成分および/または下記式(2)で表されるジオール成分を含む、上記易接着性熱可塑性樹脂フィルム。
(1)HOOC-(CH2)n-COOH (式中、nは4≦n≦10の整数)
(2)HO-(CH2)n-OH (式中、nは4≦n≦10の整数)
(3)前記ポリエステル樹脂が酸成分としてナフタレンジカルボン酸を含む、上記易接着性熱可塑性樹脂フィルム。
(5)前記塗布層が、ポリカーボネートポリオールを構成成分とするウレタン樹脂とカルボジイミド化合物とを主成分とし、前記塗布層中にカルボジイミド基を0.5~3.5mmol/g含む、上記易接着性熱可塑性樹脂フィルム。
(6)前記塗布層が、数平均分子量15000以上であって実質的にカルボン酸基を有さないポリエステル樹脂とカルボジイミト化合物とを主成分とし、塗布層中にカルボジイミド基を0.3~3.3mmol/g含む、上記易接着性熱可塑性樹脂フィルム。
(7)前記塗布層が、ポリカーボネートポリオールを構成成分とするウレタン樹脂、数平均分子量15000以上であって実質的にカルボン酸基を有さないポリエステル樹脂、およびカルボジイミド化合物を主成分とし、塗布層中にカルボジイミド基を0.1~2.0mmol/g含む、上記易接着性熱可塑性樹脂フィルム。
(8)前記カルボジイミド化合物が水溶性であり、ヘイズが2.5%以下である、上記易接着性ポリエステルフィルム。
(9)上記易接着性熱可塑性樹脂フィルムの前記塗布層に、ハードコート層、光拡散層、プリズム状レンズ層、電磁波吸収層、近赤外線遮断層、透明導電層から選択される少なくとも1層の機能層を積層してなる積層熱可塑性樹脂フィルム。
さらに、本発明の好ましい態様においては、第一の効果に加えて、ハードコート層を積層した場合であっても光干渉縞が抑制され、視認性に優れる。
また、さらに本発明の好ましい態様においては、第一の効果に加えて、耐ブロッキング性に優れる。
本発明で基材として用いる熱可塑性樹脂フィルムを構成する熱可塑性樹脂は、ポリエチレン、ポリプロピレンなどのポリオレフィン樹脂、ナイロン6、ナイロン66などのポリアミド樹脂、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリエチレン-2,6-ナフタレート、ポリメチレンテレフタレート、および共重合成分として、例えば、ジエチレングリコール、ネオペンチルグリコール、ポリアルキレングリコールなどのジオール成分や、アジピン酸、セバチン酸、フタル酸、イソフタル酸、2,6-ナフタレンジカルボン酸などのジカルボン酸成分などを共重合したポリエステル樹脂などを用いることができる。なかでも、機械的強度、耐薬品性の点からポリエステル樹脂が好ましい。
本発明の易接着性熱可塑性樹脂フィルムには、(a)ポリカーボネートポリオールを構成成分とするウレタン樹脂および/もしくは数平均分子量15000以上であって実質的にカルボン酸基を有さないポリエステル樹脂と、(b)カルボジイミド化合物を含む塗布層を設けることが重要である。中でも、上記(a)と(b)を主成分とする塗布層が好ましい。ここで、「主成分」とは、塗布層に含まれる全固形成分中として50質量%以上含有することを意味する。
本発明に用いられるウレタン樹脂は、構成成分として、少なくともポリオール成分、ポリイソシアネート成分を含み、さらに必要に応じて鎖延長剤を含む。本発明のウレタン樹脂は、これら構成成分が主としてウレタン結合により共重合された高分子化合物である。本発明では、ウレタン樹脂の構成成分としてポリカーボネートポリオールを有することを特徴とする。本発明の塗布層にポリカーボネートを構成成分とするウレタン樹脂を含有させることで、耐湿熱性を向上させることができる。なお、これらウレタン樹脂の構成成分は、核磁気共鳴分析などにより特定することが可能である。
本発明に用いるポリエステル樹脂はカルボジイミド基との反応基であるカルボン酸基が少ない方が好ましい。より好ましくは実質的にカルボン酸基を有さないものである。ここで実質的にカルボン基を有さないとは末端基以外のカルボン酸基を含有していないものである。カルボン酸基を規定する方法としては酸価の測定が挙げられるが、実質的にカルボン酸基を有さないポリエステル樹脂とは、酸価が3KOHmg/g以下であり、より好ましくは2KOHmg/g以下であり、さらに好ましくは1KOHmg/g以下のポリエステル樹脂である。
(1)HOOC-(CH2)n-COOH (式中、nは4≦n≦10の整数)
(2)HO-(CH2)n-OH (式中、nは4≦n≦10の整数)
また本発明では、(a)成分として、耐久性に優れた前記ポリカーボネート系ウレタン樹脂と、前記ポリエステル樹脂を用いることで塗布膜硬度を向上させ、密着性と同時に優れた耐ブロッキング性も発揮することができる。
本発明では、カルボジイミド化合物を含有させる必要がある。カルボジイミド化合物としては、モノカルボジイミド化合物やポリカルボジイミド化合物が挙げられる。
本発明の易接着性熱可塑性樹脂フィルムの製造方法について、ポリエチレンテレフタレート(以下、PETと略記する)フィルムを例にして説明するが、当然これに限定されるものではない。
JIS K 7367-5に準拠し、溶媒としてフェノール(60質量%)と1,1,2,2-テトラクロロエタン(40質量%)の混合溶媒を用い、30℃で測定した。
樹脂0.1gに対し、溶媒としてフェノール(60質量%)と1,1,2,2-テトラクロロエタン(40質量%)の混合溶媒25mLを用い、30℃で測定した。
JIS K7121に準拠し、示差走査熱量計(セイコーインスツルメンツ製、DSC6200)を使用して、樹脂サンプル10mgを25~300℃の温度範囲にわたって20℃/分で昇温させ、DSC曲線から得られた補外ガラス転移開始温度をガラス転移温度とした。
樹脂を重クロロホルムに溶解し、ヴァリアン社製核磁気共鳴分析計(NMR)ジェミニ-200を用いて、1H-NMR分析を行ってその積分比より、全イソシアネート成分を100モル%とした場合の各組成のモル%比を決定した。
樹脂0.03gをテトラヒドロフラン 10ml に溶かし、GPC-LALLS装置低角度光散乱光度計 LS-8000(東ソー株式会社製、テトラヒドロフラン溶媒、リファレンス:ポリスチレン)を用い、カラム温度30℃、流量1ml/分、カラム(昭和電工社製shodex KF-802、804、806)を用い、数平均分子量を測定した。
1g(固形分)の試料を30mlのクロロホルムまたはジメチルホルムアミドに溶解し、フェノールフタレインを指示薬として0.1Nの水酸化カリウムエタノール溶液で滴定して、試料1g当たりのカルボキシル基を中和するのに必要なKOHの量(mg)を求めた。
カルボジイミド化合物を凍結乾燥し、これを1H-NMRにて分析し、カルボジイミド基に由来する吸収ピーク強度、その他のモノマーに由来する吸収ピーク強度から、カルボジイミド価を算出した。
得られた易接着性ポリエステルフィルムの全光線透過率はJIS K 7105に準拠し、濁度計(日本電色製、NDH2000)を用いて測定した。
得られた易接着性ポリエステルフィルムのヘイズはJIS K 7136に準拠し、濁度計(日本電色製、NDH2000)を用いて測定した。
実施例および比較例で得られたフィルムの塗布層面について、全反射吸収赤外分光法で測定し、基材フィルムから特異的に得られる吸光度を対照として塗布層中のカルボジイミド基濃度を求めた。
すなわち、下記に示す条件により全反射吸収赤外分光法で測定し、赤外吸収スペクトルを得、カルボジイミド由来の吸光度と基材フィルムの吸光度(PETフィルムの場合、エチレングリコール)の比(赤外吸光度比A2120/A1340)を求めた。尚、カルボジイミド基由来の吸光度は2120±10cm-1の領域に吸収極大を持つ吸収ピークの高さの値(A2120)とし、PET由来の吸光度は1340±10cm-1の領域に吸収極大を持つ吸収ピークの高さの値(A1340)とした。ベースラインはそれぞれの極大吸収ピークの両側の袖を結ぶ線とした。
また、塗布層の厚みは、透過型電子顕微鏡により求めた。積層フィルムの試料を可視光硬化型樹脂(日本新EM社製、D-800)に包埋し、室温で可視光にさらして硬化させた。得られた包埋ブロックから、ダイアモンドナイフを装着したウルトラミクロトームを用いて70~100nm程度の厚みの超薄切片を作製し、四酸化ルテニウム蒸気中で30分間染色した。さらにカーボン蒸着を施した後、透過型電子顕微鏡(日本電子株式会社製、TEM2010)を用いて断面を観察し、写真を撮影し、これより塗布層の厚みを計測した。なお、撮影は、10,000~100,000倍の範囲で適宜設定した。
得られた赤外吸光度比A2120/A1340および塗布層の厚みより、予めカルボジイミド濃度が既知の塗布液を塗布、風乾した標準サンプルから作成した検量線を用いて塗布層中のカルボジイミド基濃度を求めた。
なお、検量線の作成においては、カルボジイミド基濃度を0.5、1.4、2.7、4.5mmol/gとした塗布液(溶媒:水/イソプロピルアルコール=1/1、アクリル樹脂との混合量を調整し固定分濃度30質量%とした)を、乾燥後の塗布層の厚みが50nm、100nm、200nmとなるように塗布し、風乾した試料について、下記に示す条件で全反射吸収赤外分光法にて赤外吸光度比A2120/A1340を測定し、得られた結果からオキサゾリン基濃度、塗布層厚み、赤外吸光度比A2120/A1340の3つの変量からなる下記一次式をもとめ、これを検量線とした。
(カルボジイミド濃度)=A×(赤外吸光度比A2120/A1340)/(塗布層厚み)+B
(ここで、A、Bは上記検量線作成により得られたデータから求まる定数)
装置:Varian社製 FTS-60A/896
1回反射ATRアタッチメント:SPECTRA TECH社製 Silver Gate
光学結晶:Ge
入射角:45°
分解能:4cm-1
積算回数:128回
なお、塗布層の厚さが薄く、十分な感度が得られない場合は、使用する1回反射アタッチメントを、より入射角が大きい(65度)アタッチメント(例えばエス・ティ・ジャパン社製 VeeMax)に代えて測定しても良い。
得られた積層ポリエステルフィルムの光硬化型アクリル層面に、隙間間隔2mmのカッターガイドを用いて、光硬化型アクリル層を貫通して基材フィルムに達する100個のマス目状の切り傷をつける。次いで、セロハン粘着テープ(ニチバン社製、405番;24mm幅)をマス目状の切り傷面に貼り付け、消しゴムでこすって完全に密着させた。その後、垂直にセロハン粘着テープを積層ポリエステルフィルムの光硬化型アクリル層面から引き剥がす作業を5回行った後、積層ポリエステルフィルムの光硬化型アクリル層面から剥がれたマス目の数を目視で数え、下記の式から光硬化型アクリル層と基材フィルムとの密着性を求めた。なお、マス目の中で部分的に剥離しているものも剥がれたマス目として数え、下記の基準でランク分けをした。
密着性(%)=(1-剥がれたマス目の数/100)×100
◎:100%、または、光硬化型アクリル層の材破
○:99~90%
△:89~70%
×:69~0%
得られた積層ポリエステルフィルムを、高温高湿槽中で80℃、95%RHの環境下48時間放置した。次いで、積層ポリエステルフィルムを取りだし、室温常湿で12時間放置した。その後、垂直にセロハン粘着テープを積層ポリエステルフィルムの光硬化型アクリル層面から引き剥がす作業を5回行う以外は、前記(11)と同様の方法で光硬化型アクリル層と基材フィルムの接密着性を求め、下記の基準でランク分けをした。
◎:100%、または、光硬化型アクリル層の材破
○:99~90%
△:89~70%
×:69~0%
得られた積層ポリエステルフィルムを10cm(フィルム幅方向)×15cm(フィルム長手方向)の面積に切り出し、試料フィルムを作成した。得られた試料フィルムのハードコート層とは反対面に、黒色光沢テープ(日東電工製、ビニルテープNo21;黒)を張り合わせた。この試料フィルムのハードコート面を上面にして3波長形昼白色(ナショナル パルック、F.L
15EX-N 15W)を光源として斜め上から目視でもっとも反射が強く見える位置関係(光源からの距離40~60cm、フィルム面の垂線に対して15~45°の角度)で観察した。
○:ほとんど虹彩状色彩が見られない
△:僅かに虹彩状色彩が観察される
×:はっきりとした虹彩状色彩が観察される
攪拌機、温度計、および部分還流式冷却器を具備するステンレススチール製オートクレーブに、ジメチルテレフタレート194.2質量部、ジメチルイソフタレート184.5質量部、ジメチルー5-ナトリウムスルホイソフタレート14.8質量部、ジエチレングリコール233.5質量部、エチレングリコール136.6質量部、およびテトラーnーブチルチタネート0.2質量部を仕込み、160℃から220℃まで4時間かけてエステル交換反応を行なった。次いで255℃まで昇温し、反応系を徐々に減圧した後、30Paの減圧下で1時間30分反応させ、共重合ポリエステル樹脂(A-1)を得た。得られた共重合ポリエステル樹脂(A-1)は、淡黄色透明であった。得られた共重合ポリエステル樹脂(A-1)の還元粘度を測定したところ,0.70dl/gであった。DSCによるガラス転移温度は40℃であった。
攪拌機、温度計と還流装置を備えた反応器に、ポリエステル樹脂(A-1)30質量部、エチレングリコールn-ブチルエーテル15質量部を入れ、110℃で加熱、攪拌し樹脂を溶解した。樹脂が完全に溶解した後、水55質量部をポリエステル溶液に攪拌しつつ徐々に添加した。添加後、液を攪拌しつつ室温まで冷却して、固形分30質量%の乳白色のポリエステル水分散体(B-1)を作製した。同様にポリエステル樹脂(A-1)の代わりにポリエステル樹脂(A-2)~(A-7)を使用して、水分散体を作製し、それぞれ水分散体(B-2)~(B-7)とした。
温度計、窒素ガス導入管、還流冷却器、滴下ロート、および攪拌機を備えたフラスコにテトラメチルキシリレンジイソシアネート200質量部、カルボジイミド化触媒の3-メチル-1-フェニル-2-ホスホレン-1-オキシド4質量部を投入し、窒素雰囲気下、180℃において40時間撹拌し、イソシアネート末端テトラメチルキシリレンカルボジイミド(重合度=5)を得た。次いで、得られたカルボジイミド94.5g、ポリエチレングリコールモノメチルエーテル(分子量220)40.0gを100℃で24時間反応させた。これに水を50℃で徐々に加え、固形分40質量%の黄色透明な水溶性カルボジイミド化合物(C-1)を得た。カルボジイミド当量は246であった。
温度計、窒素ガス導入管、還流冷却器、滴下ロート、および攪拌機を備えたフラスコにイソホロンジイソシアネート200質量部、カルボジイミド化触媒の3-メチル-1-フェニル-2-ホスホレン-1-オキシド4質量部を投入し、窒素雰囲気下、180℃において12時間撹拌し、イソシアネート末端イソホロンカルボジイミド(重合度=6)を得た。次いで、得られたカルボジイミド129.2g、ポリエチレングリコールモノメチルエーテル(分子量400)80gを100℃で24時間反応させた。これに水を50℃で徐々に加え、固形分40質量%の黄色透明な水溶性カルボジイミド化合物(C-2)を得た。カルボジイミド当量は349であった。
温度計、窒素ガス導入管、還流冷却器、滴下ロート、および攪拌機を備えたフラスコに4,4-ジシクロヘキシルメタンジイソシアネート200質量部、カルボジイミド化触媒の3-メチル-1-フェニル-2-ホスホレン-1-オキシド4質量部を投入し、窒素雰囲気下、180℃において10時間撹拌し、イソシアネート末端4,4-ジシクロヘキシルメタン(重合度=4)を得た。次いで、得られたカルボジイミド113.6g、ポリエチレングリコールモノメチルエーテル(分子量400)80gを100℃で24時間反応させた。これに水を50℃で徐々に加え、固形分40質量%の黄色透明な水溶性カルボジイミド化合物(C-3)を得た。カルボジイミド当量は484であった。
温度計、窒素ガス導入管、還流冷却器、滴下ロート、および攪拌機を備えたフラスコにテトラメチルキシリレンジイソシアネート200質量部、カルボジイミド化触媒の3-メチル-1-フェニル-2-ホスホレン-1-オキシド4質量部を投入し、窒素雰囲気下、180℃において40時間撹拌し、イソシアネート末端テトラメチルキシリレンカルボジイミド(重合度=10)を得た。次いで、得られたカルボジイミド169.7g、ポリエチレングリコールモノメチルエーテル(分子量400)80gを100℃で24時間反応させた。これに水を50℃で徐々に加え、固形分40質量%の水分散性カルボジイミド化合物(C-4)を得た。カルボジイミド当量は250であった。
温度計、窒素ガス導入管および攪拌機を備えた反応器中で、窒素ガスを導入しながら、ヘキサメチレンジイソシアネート627.1質量部、50℃に加温した数平均分子量1000のメトキシポリエチレングリコール372.9質量部を仕込み、80℃で6時間反応させた。所定のイソシアネート基含有量に到達した後、スミス式薄膜蒸留器にて未反応のヘキサメチレンジイソシアネートを取り除き、ポリオキシエチレン基含有モノイソシアネート(D)を得た。このポリオキシエチレン鎖含有モノイソシアネート(D)の計算上の数平均分子量は、1168g/モルであった。
撹拌機、ジムロート冷却器、窒素導入管、シリカゲル乾燥管、及び温度計を備えた4つ口フラスコに、1,3-ビス(イソシアネートメチル)シクロヘキサン72.96質量部、ジメチロールプロピオン酸12.60質量部、ネオペンチルグリコール11.74質量部、数平均分子量2000のポリカーボネートジオール112.70質量部、及び溶剤としてアセトニトリル85.00質量部、N-メチルピロリドン5.00質量部を投入し、窒素雰囲気下、75℃において3時間撹拌し、反応液が所定のアミン当量に達したことを確認した。次に、この反応液を40℃にまで降温した後、トリエチルアミン9.03質量部を添加し、ポリウレタンプレポリマーD溶液を得た。次に、高速攪拌可能なホモディスパーを備えた反応容器に、水450gを添加して、25℃に調整して、2000min-1で攪拌混合しながら、イソシアネート基末端プレポリマーを添加して水分散した。その後、減圧下で、アセトニトリルおよび水の一部を除去することにより、固形分35%の水溶性ポリウレタン樹脂(D-2)を調製した。
(1)塗布液の調整
下記の塗剤を混合し、塗布液を作成した。ポリエステル樹脂は数平均分子量20000である。
水 51.78質量%
イソプロパノール 30.00質量%
ポリエステル水分散体(B-1) 13.16質量%
水溶性カルボジイミド化合物(C-1)
4.23質量%
粒子 0.71質量%
(平均粒径40nmのシリカゾル、固形分濃度40質量%)
粒子 0.07質量%
(平均粒径450nmのシリカゾル、固形分濃度40質量%)
界面活性剤 0.05質量%
(シリコン系、固形分濃度100質量%)
フィルム原料ポリマーとして、固有粘度が0.62dl/gで、かつ粒子を実質上含有していないPET樹脂ペレットを、133Paの減圧下、135℃で6時間乾燥した。その後、押し出し機に供給し、約280℃でシート状に溶融押し出しして、表面温度20℃に保った回転冷却金属ロール上で急冷密着固化させ、未延伸PETシートを得た。
前記の易接着性ポリエステルフィルムの塗布層面に、下記組成のハードコート層形成用塗布液(C-1)を#10ワイヤーバーを用いて塗布し、70℃で1分間乾燥し、溶剤を除去した。次いで、ハードコート層を塗布したフィルムに高圧水銀灯を用いて300mJ/cm2の紫外線を照射し、厚み5μmのハードコート層を有する積層ポリエステルフィルムを得た。
ハードコート層形成用塗布液
メチルエチルケトン 39.00質量%
トルエン 26.00質量%
ジペンタエリスリトールヘキサアクリレート 22.83質量%
(新中村化学製A-DPH)
ポリエチレンジアクリレート 11.17質量%
(新中村化学製A-400)
光重合開始剤 1.00質量%
(チバスペシャリティーケミカルズ社製イルガキュア184)
ポリエステル水分散体を分子量8000のポリエステル水分散体(B-6)に変更した以外は実施例1と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
ポリエステル水分散体を酸価50KOHmg/gのポリエステル水分散体(B-7)に変更した以外は実施例1と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水溶性カルボジイミド化合物(C-1)をエポキシ化合物(ナガセケムテックス社製 デナコールEX-521 固形分濃度100%)に変更した以外は実施例1と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水溶性カルボジイミド化合物(C-1)をメラミン化合物(DIC社製 ベッカミンM-3 固形分濃度60%)に変更した以外は実施例1と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
塗布液を下記に変更したこと以外は実施例1と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水 51.31質量%
イソプロパノール 30.00質量%
ポリエステル水分散体(B-1) 15.04質量%
水溶性カルボジイミド化合物(C-1) 2.82質量%
粒子 0.71質量%
(平均粒径40nmのシリカゾル、固形分濃度40質量%)
粒子 0.07質量%
(平均粒径450nmのシリカゾル、固形分濃度40質量%)
界面活性剤 0.05質量%
(シリコン系、固形分濃度100質量%)
塗布液を下記に変更したこと以外は実施例1と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水 53.19質量%
イソプロパノール 30.00質量%
ポリエステル水分散体(B-1) 7.52質量%
水溶性カルボジイミド化合物(C-1) 8.46質量%
粒子 0.71質量%
(平均粒径40nmのシリカゾル、固形分濃度40質量%)
粒子 0.07質量%
(平均粒径450nmのシリカゾル、固形分濃度40質量%)
界面活性剤 0.05質量%
(シリコン系、固形分濃度100質量%)
塗布液を下記に変更したこと以外は実施例1と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水 53.66質量%
イソプロパノール 30.00質量%
ポリエステル水分散体(B-1) 5.64質量%
水溶性カルボジイミド化合物(C-1) 9.87質量%
粒子 0.71質量%
(平均粒径40nmのシリカゾル、固形分濃度40質量%)
粒子 0.07質量%
(平均粒径450nmのシリカゾル、固形分濃度40質量%)
界面活性剤 0.05質量%
(シリコン系、固形分濃度100質量%)
水溶性カルボジイミド化合物(C-1)を水溶性カルボジイミド化合物(C-2)に変更した以外は実施例1と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水溶性カルボジイミド化合物(C-1)を水溶性カルボジイミド化合物(C-3)に変更した以外は実施例1と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
ポリエステル水分散体を分子量15000のポリエステル水分散体(B-2)に変更した以外は実施例1と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
ポリエステル水分散体を分子量23000のポリエステル水分散体(B-3)に変更した以外は実施例1と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
ポリエステル水分散体を分子量46000のポリエステル水分散体(B-4)に変更した以外は実施例1と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
ポリエステル水分散体を分子量50000のポリエステル水分散体(B-5)に変更した以外は実施例1と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水溶性カルボジイミド化合物(C-1)を水分散性カルボジイミド化合物(C-4)に変更した以外は実施例1と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
(1)塗布液の調整
下記の塗剤を混合し、塗布液を作成した。
水 53.66質量%
イソプロパノール 30.00質量%
ポリウレタン樹脂(D-1) 11.28質量%
水溶性カルボジイミド化合物(C-1) 4.23質量%
粒子 0.71質量%
(平均粒径40nmのシリカゾル、固形分濃度40質量%)
粒子 0.07質量%
(平均粒径450nmのシリカゾル、固形分濃度40質量%)
界面活性剤 0.05質量%
(シリコン系、固形分濃度100質量%)
フィルム原料ポリマーとして、固有粘度が0.62dl/gで、かつ粒子を実質上含有していないPET樹脂ペレットを、133Paの減圧下、135℃で6時間乾燥した。その後、押し出し機に供給し、約280℃でシート状に溶融押し出しして、表面温度20℃に保った回転冷却金属ロール上で急冷密着固化させ、未延伸PETシートを得た。
ポリウレタン樹脂をポリエステルポリオールを構成成分とするポリウレタン樹脂(D-5)に変更した以外は実施例12と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
ポリウレタン樹脂をポリエーテルポリオールを構成成分とするポリウレタン樹脂(D-6)に変更した以外は実施例12と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水溶性カルボジイミド化合物(C―1)をエポキシ化合物(ナガセケムテックス社製 デナコールEX-521 固形分濃度100%)に変更した以外は実施例12と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水溶性カルボジイミド化合物(C-1)をメラミン化合物(DIC社製 ベッカミンM-3 固形分濃度60%)に変更した以外は実施例12と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
塗布液を下記に変更したこと以外は実施例12と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水 53.46質量%
イソプロパノール 30.00質量%
ポリウレタン樹脂(D-1) 12.89質量%
水溶性カルボジイミド化合物(C-1) 2.82質量%
粒子 0.71質量%
(平均粒径40nmのシリカゾル、固形分濃度40質量%)
粒子 0.07質量%
(平均粒径450nmのシリカゾル、固形分濃度40質量%)
界面活性剤 0.05質量%
(シリコン系、固形分濃度100質量%)
塗布液を下記に変更したこと以外は実施例12と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水 54.26質量%
イソプロパノール 30.00質量%
ポリウレタン樹脂(D-1) 6.45質量%
水溶性カルボジイミド化合物(C-1) 8.46質量%
粒子 0.71質量%
(平均粒径40nmのシリカゾル、固形分濃度40質量%)
粒子 0.07質量%
(平均粒径450nmのシリカゾル、固形分濃度40質量%)
界面活性剤 0.05質量%
(シリコン系、固形分濃度100質量%)
塗布液を下記に変更したこと以外は実施例12と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水 54.47質量%
イソプロパノール 30.00質量%
ポリウレタン樹脂(D-1) 4.83質量%
水溶性カルボジイミド化合物(C-1) 9.87質量%
粒子 0.71質量%
(平均粒径40nmのシリカゾル、固形分濃度40質量%)
粒子 0.07質量%
(平均粒径450nmのシリカゾル、固形分濃度40質量%)
界面活性剤 0.05質量%
(シリコン系、固形分濃度100質量%)
水溶性カルボジイミド化合物(C-1)を水溶性カルボジイミド化合物(C-2)に変更した以外は実施例12と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水溶性カルボジイミド化合物(C-1)を水溶性カルボジイミド化合物(C-3)に変更した以外は実施例12と同様にして易接着性ポリエステルフィルムおよび積層ポリエテルフィルムを得た。
ポリウレタン樹脂(D-1)をポリウレタン樹脂(D-2)に変更した以外は実施例12と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
ポリウレタン樹脂(D-1)をポリウレタン樹脂(D-3)に変更した以外は実施例12と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
ポリウレタン樹脂(D-1)をポリウレタン樹脂(D-4)に変更した以外は実施例12と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水溶性カルボジイミド化合物(C-1)を水分散性カルボジイミド化合物(C-4)に変更した以外は実施例12と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
(1)塗布液の調整
下記の塗剤を混合し、塗布液を作成した。
水 52.65質量%
イソプロパノール 30.00質量%
ポリエステル樹脂 (B-2) 7.15質量%
ポリウレタン樹脂(D-1) 6.95質量%
水溶性カルボジイミド化合物 (C-1) 1.35質量%
粒子 1.35質量%
(平均粒径40nmのシリカゾル、固形分濃度40質量%)
粒子 0.54質量%
(平均粒径450nmのシリカゾル、固形分濃度40質量%)
フィルム原料ポリマーとして、固有粘度が0.62dl/gで、かつ粒子を実質上含有していないPET樹脂ペレットを、133Paの減圧下、135℃で6時間乾燥した。その後、押し出し機に供給し、約280℃でシート状に溶融押し出しして、表面温度20℃に保った回転冷却金属ロール上で急冷密着固化させ、未延伸PETシートを得た。
清浄に保った厚さ1mmのSUS板上(SUS304)に、下記光硬化型アクリル系塗布液を約5gのせ、フィルム試料の塗布層面と光硬化型アクリル系塗布液が接するように重ね合わせ、フィルム試料の上から幅10cm、直径4cmの手動式荷重ゴムローラーで光硬化型アクリル系塗布液を引き延ばすように圧着した。次いで、フィルム面側から、高圧水銀灯を用いて800mJ/cm2の紫外線を照射し、光硬化型アクリル樹脂を硬化させた。厚み20μmの光硬化型アクリル層を有するフィルム試料をSUS板から剥離し、積層ポリエステルフィルムを得た。
光硬化型アクリル系塗布液
光硬化型アクリル系樹脂 60.00質量%
(新中村化学製4G)
光硬化型アクリル系樹脂 20.00質量%
(新中村化学製A-TMMT)
光硬化型アクリル系樹脂 10.00質量%
(新中村化学製A-BPE-4)
光硬化型アクリル系樹脂 8.00質量%
(新中村化学製U-6HA)
光重合開始剤 2.00質量%
(チバスペシャリティーケミカルズ社製イルガキュア184)
ポリエステル水分散体を分子量20000のポリエステル水分散体(B-1)に変更した以外は実施例22と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
ポリエステル水分散体を分子量23000のポリエステル水分散体(B-3)に変更した以外は実施例22と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
塗布液を下記に変更したこと以外は実施例22と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水 52.54質量%
イソプロパノール 30.00質量%
ポリエステル樹脂 (B-2) 7.55質量%
ポリウレタン樹脂(D-1) 7.34質量%
水溶性カルボジイミド化合物 (C-1) 0.68質量%
粒子 1.35質量%
(平均粒径40nmのシリカゾル、固形分濃度40質量%)
粒子 0.54質量%
(平均粒径450nmのシリカゾル、固形分濃度40質量%)
塗布液を下記に変更したこと以外は実施例22と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水 52.87質量%
イソプロパノール 30.00質量%
ポリエステル樹脂 (B-2) 6.36質量%
ポリウレタン樹脂(D-1) 6.18質量%
水溶性カルボジイミド化合物 (C-1) 2.70質量%
粒子 1.35質量%
(平均粒径40nmのシリカゾル、固形分濃度40質量%)
粒子 0.54質量%
(平均粒径450nmのシリカゾル、固形分濃度40質量%)
塗布液を下記に変更したこと以外は実施例22と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水 53.08質量%
イソプロパノール 30.00質量%
ポリエステル樹脂 (B-2) 5.56質量%
ポリウレタン樹脂(D-1) 5.41質量%
水溶性カルボジイミド化合物 (C-1) 4.05質量%
粒子 1.35質量%
(平均粒径40nmのシリカゾル、固形分濃度40質量%)
粒子 0.54質量%
(平均粒径450nmのシリカゾル、固形分濃度40質量%)
塗布液を下記に変更したこと以外は実施例22と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水 52.56質量%
イソプロパノール 30.00質量%
ポリエステル樹脂 (B-2) 10.33質量%
ポリウレタン樹脂(D-1) 3.86質量%
水溶性カルボジイミド化合物 (C-1) 1.35質量%
粒子 1.35質量%
(平均粒径40nmのシリカゾル、固形分濃度40質量%)
粒子 0.54質量%
(平均粒径450nmのシリカゾル、固形分濃度40質量%)
塗布液を下記に変更したこと以外は実施例22と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水 52.74質量%
イソプロパノール 30.00質量%
ポリエステル樹脂 (B-2) 3.97質量%
ポリウレタン樹脂(D-1) 10.04質量%
水溶性カルボジイミド化合物 (C-1) 1.35質量%
粒子 1.35質量%
(平均粒径40nmのシリカゾル、固形分濃度40質量%)
粒子 0.54質量%
(平均粒径450nmのシリカゾル、固形分濃度40質量%)
水溶性カルボジイミド化合物(C-1)を水溶性カルボジイミド化合物(C-3)に変更た以外は実施例22と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
水溶性カルボジイミド化合物(C-1)を水分散性カルボジイミド化合物(C-4)に変更した以外は実施例22と同様にして易接着性ポリエステルフィルムおよび積層ポリエステルフィルムを得た。
Claims (9)
- 基材フィルムの少なくとも片面に塗布層を有する易接着性熱可塑性樹脂フィルムであり、
前記塗布層が、
(a)ポリカーボネートポリオールを構成成分とするウレタン樹脂および/もしくは数平均分子量15000以上であって実質的にカルボン酸基を有さないポリエステル樹脂と、
(b)カルボジイミド化合物を含有する、
易接着性熱可塑性樹脂フィルム。 - 前記ウレタン樹脂がポリオキシアルキレン基を有する、請求項1に記載の易接着性熱可塑性樹脂フィルム。
- 前記ポリエステル樹脂が下記式(1)で表されるジカルボン酸成分および/または下記式(2)で表されるジオール成分を含む、請求項1に記載の易接着性熱可塑性樹脂フィルム。
(1)HOOC-(CH2)n-COOH (式中、nは4≦n≦10の整数)
(2)HO-(CH2)n-OH (式中、nは4≦n≦10の整数) - 前記ポリエステル樹脂が酸成分としてナフタレンジカルボン酸を含む、請求項1に記載の易接着性熱可塑性樹脂フィルム。
- 前記塗布層が、ポリカーボネートポリオールを構成成分とするウレタン樹脂とカルボジイミド化合物とを主成分とし、前記塗布層中にカルボジイミド基を0.5~3.5mmol/g含む、請求項1に記載の易接着性熱可塑性樹脂フィルム。
- 前記塗布層が、数平均分子量15000以上であって実質的にカルボン酸基を有さないポリエステル樹脂とカルボジイミト化合物とを主成分とし、塗布層中にカルボジイミド基を0.3~3.3mmol/g含む、請求項1に記載の易接着性熱可塑性樹脂フィルム。
- 前記塗布層が、ポリカーボネートポリオールを構成成分とするウレタン樹脂、数平均分子量15000以上であって実質的にカルボン酸基を有さないポリエステル樹脂、およびカルボジイミド化合物を主成分とし、塗布層中にカルボジイミド基を0.1~2.0mmol/g含む、請求項1に記載の易接着性熱可塑性樹脂フィルム。
- 前記カルボジイミド化合物が水溶性であり、ヘイズが2.5%以下である、請求項1に記載の易接着性ポリエステルフィルム。
- 請求項1~8のいずれかに記載する易接着性熱可塑性樹脂フィルムの前記塗布層に、ハードコート層、光拡散層、プリズム状レンズ層、電磁波吸収層、近赤外線遮断層、透明導電層から選択される少なくとも1層の機能層を積層してなる積層熱可塑性樹脂フィルム。
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JP2011126066A (ja) * | 2009-12-16 | 2011-06-30 | Toyobo Co Ltd | 易接着性ポリエステルフィルム |
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TWI664081B (zh) * | 2014-11-21 | 2019-07-01 | Toyobo Co., Ltd. | Laminated polyester film with voids |
JPWO2016080256A1 (ja) * | 2014-11-21 | 2017-08-31 | 東洋紡株式会社 | 空洞含有積層ポリエステルフィルム |
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EP3925776A4 (en) * | 2019-02-13 | 2023-01-11 | Toyobo Co., Ltd. | LAMINATED POLYESTER FILM |
US20220056229A1 (en) * | 2019-02-21 | 2022-02-24 | Unitika Ltd. | Laminated film and method for manufacturing same |
EP3950348A4 (en) * | 2019-03-26 | 2023-01-11 | Toyobo Co., Ltd. | POLYESTER FILM LAMINATE |
JP2023076487A (ja) * | 2019-06-03 | 2023-06-01 | 東洋紡株式会社 | 金属被覆ポリエステルフィルム |
JP7559858B2 (ja) | 2019-06-03 | 2024-10-02 | 東洋紡株式会社 | 金属被覆ポリエステルフィルム |
WO2022030123A1 (ja) * | 2020-08-06 | 2022-02-10 | 東洋紡株式会社 | 積層ポリエステルフィルム |
Also Published As
Publication number | Publication date |
---|---|
CN102648094A (zh) | 2012-08-22 |
KR20120091370A (ko) | 2012-08-17 |
KR101404875B1 (ko) | 2014-06-09 |
CN102648094B (zh) | 2015-04-08 |
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