JP6325324B2 - Hard coat film, coating liquid for forming hard coat layer, and method for producing hard coat film - Google Patents

Description

  The present invention relates to a hard coat film. More specifically, an optical hard coat film excellent in slip and antifouling properties suitable as a member of electronic devices such as various display devices and touch panels, a coating liquid for forming the hard coat layer, and a method for producing the hard coat film About.

  Hard coat films have been mainly used for display surfaces, but in recent years, they have been widely used for mobile devices such as touch panels. A display for a touch panel is required to have different performance from a general display. In particular, since it is always carried and operated by touching the surface of the hard coat, it is required to prevent contamination due to human sebum and sweat.

  In this regard, Patent Document 1 is formed from a hard coat agent containing 0.01 to 3% by weight of a non-crosslinked fluorosurfactant in order to improve antifouling properties against sweat, fingerprint marks, and the like. An optical recording medium having an antifouling hard coat layer on its surface is described.

  In Patent Document 2, a cationically polymerizable monomer 5 to 90 consisting of 80 to 100% by weight of an oxetane compound having a silyl group in the molecule or its hydrolysis condensate and 0 to 20% by weight of an epoxy compound is formed on the surface of the substrate. A cured coating from a composition containing 10 parts by weight, 10 to 80 parts by weight of silica fine particles, and 0 to 15 parts by weight of silicone oil and at least one of an epoxy compound and silicone oil is described.

  In Patent Document 3, in an antireflection film in which at least one functional layer and a low refractive index layer are sequentially laminated on a transparent substrate, at least one functional layer is in contact with the low refractive index layer. A functional layer forming composition containing only a non-reactive fluorine-based leveling agent and a functional layer forming composition is semi-cured and then completely cured. The low refractive index layer comprises a binder and at least the binder. Reactive leveling agent, which is obtained by curing a composition for forming a low refractive index layer containing only a reactive silicon-based leveling agent, and further migrated from at least one functional layer Contains a fluorine-based leveling agent, and migrated non-reactive fluorine-based leveling agent and reactive silicon-based leveling agent exist uniformly on the surface of the low refractive index layer Method for producing an antireflection film comprising a leveling agent is described that.

JP-A-10-110118 JP 2003-147268 A Japanese Patent No. 5217744

  The hard coat layer disclosed in Patent Document 1 has a contact angle of artificial sweat and squalene of 90 ° or more, and although the effect of reducing dirt adhesion by repelling sweat or sebum is recognized, it is repelled on the surface of the hard coat layer. The remaining sweat or sebum is subject to irregular reflection due to light, and there is a concern that it will stand out as dirt on the appearance.

  Although the cured film disclosed in Patent Document 2 is a film having improved slipperiness and high friction resistance due to the addition of silicone oil, since silicone has a property that is easily compatible with sebum, fingerprints attached to the film, etc. Is expected to be difficult to wipe off.

  In the method disclosed in Patent Document 3, the non-reactive fluorine leveling agent is semi-cured and migrated, and then the low refractive index layer is applied. Therefore, the process is complicated and the productivity is inferior.

  The present invention is suitable as a member of electronic devices such as various display devices and touch panels, and has an optical hard coat film excellent in slip and antifouling properties, a coating liquid for forming the hard coat layer, and production of the hard coat film It aims to provide a method.

The present invention provided to achieve the above object is as follows.
(1) A hard coat film comprising a base film and a hard coat layer laminated on at least one surface of the base film, wherein the hard coat film side surface of the hard coat film is A hard coat film having a static friction coefficient of 0.2 or less and a contact angle to oleic acid of 50 ° or more.

(2) The hard coat according to (1), wherein a phase separation structure can be measured when the surface of the hard coat film on the hard coat layer side is measured in a tapping mode using a scanning probe microscope. the film.

(3) The hard coat film according to (2), wherein the phase separation structure includes a sea-like portion and a plurality of island-like portions that are independent from each other in the sea-like portion.

(4) The hard coat according to (3), wherein the phase-separated structure has a ratio of the sum of the area of the island-like portions to the sum of the areas of the sea-like portions in the range of 5/95 to 95/5. the film.

(5) The hard coat film according to any one of (1) to (4), wherein the hard coat layer is formed from a coating liquid containing a silicone material and a fluorine material.

(6) The hard coat film according to (5), wherein the coating liquid contains a compound having an energy polymerizable functional group, and the silicone material and the fluorine material have an energy polymerizable functional group.

(7) A coating for forming a hard coat layer, comprising a compound having an energy polymerizable functional group, a silicone material having an energy polymerizable functional group, and a fluorine material having an energy polymerizable functional group. liquid.

(8) The method for producing a hard coat film described in any one of (1) to (6) above, wherein the hard coat layer forming coating described in (7) above is provided on one surface of the base film. A hard coat film is produced by applying a working solution to form a coating film on the base film, and irradiating the coating film with energy to form a hard coat layer on the base film. Method.

  ADVANTAGE OF THE INVENTION According to this invention, it is excellent in slip property and antifouling property, and it is suitable as a member of electronic devices, such as various display apparatuses and a touch panel, its manufacturing method, The coating for hard coat layer formation of such a hard coat film A working fluid can be provided.

It is sectional drawing of the hard coat film which concerns on one embodiment of this invention. It is sectional drawing of the hard coat film which concerns on other one Embodiment of this invention. 2 is a measurement image (photograph) obtained by a scanning probe microscope on the surface of a hard coat layer according to Example 1. FIG. 6 is a measurement image (photograph) of the surface of a hard coat layer according to Example 5 using a scanning probe microscope. 5 is a measurement image (photograph) of a hard coat layer surface according to Comparative Example 1 using a scanning probe microscope. It is a measurement image (photograph) by the scanning probe microscope of the hard-coat layer surface concerning the comparative example 2. FIG. It is a measurement image (photograph) by the scanning probe microscope of the hard-coat layer surface concerning the comparative example 3.

1. Hard Coat Film As shown in FIG. 1, a hard coat film 10 according to an embodiment of the present invention includes a base film 1 and a hard coat layer 2 laminated on one main surface 1A of the base film 1. With. As shown in FIG. 2, a hard coat film 10 according to another embodiment of the present invention includes a base film 1 and a hard coat layer laminated on one main surface 1 </ b> A of the base film 1. 2 and a curl suppressing layer 3 laminated on the other main surface 1B of the base film 1.

(1) Physical Properties, etc. (1-1) Friction Coefficient The hard coat film 10 according to this embodiment has a static friction coefficient on the surface of the hard coat layer 2 of 0.2 or less. When the static friction coefficient is 0.2 or less, the hard coat film 10 according to this embodiment can have excellent slip properties. From the viewpoint of more stably having excellent slip properties, the hard coat film 10 according to the present embodiment, the static friction coefficient is preferably 0.18 or less, more preferably 0.16 or less, It is particularly preferable that it is 0.14 or less.

(1-2) Contact angle with respect to oleic acid In the hard coat film 10 according to this embodiment, the contact angle with respect to oleic acid on the surface on the hard coat layer 2 side is 50 ° or more. When the contact angle is 50 ° or more, the hard coat film 10 according to the present embodiment can have excellent antifouling properties. From the viewpoint of more stably providing the antifouling property of the hard coat film 10 according to this embodiment, the contact angle is preferably 53 ° or more, more preferably 55 ° or more, and 60 It is particularly preferable that the angle is at least.

(1-3) Contact angle with respect to water The hard coat film 10 according to this embodiment has a contact angle with respect to water on the surface on the hard coat layer 2 side of 90 ° from the viewpoint of more stably having excellent antifouling properties. Preferably, it is 95 ° or more, more preferably 100 ° or more.

(1-4) Phase separation structure The hard coat film 10 according to the present embodiment measures the phase separation structure when the surface on the hard coat layer 2 side is measured in a tapping mode using a scanning probe microscope. It is preferable that In this specification, the “phase separation structure” refers to a structure in which a plurality of phases are observed in an image obtained by a scanning probe microscope, and each phase is observed separately from other phases. When a phase separation structure is observed on the surface of the hard coat film 10 according to the present embodiment on the side of the hard coat layer 2, excellent slip properties and excellent antifouling properties are easily achieved. As will be described later, by adding an energy polymerizable leveling agent to the hard coat layer forming coating solution, the compatibility of the components contained in the coating solution changes when the coating film is cured by energy irradiation or the like. May contain components based on leveling agents with relatively low volume fractions but may be due to separation from other phases.

  The details of the state where a plurality of phases are separated in the phase separation structure are not limited. As an example, a phase separation structure including a sea-like portion and a plurality of island-like portions that are independent from each other in the sea-like portion (in this specification, this phase separation structure is also referred to as a “sea-island structure”). .

  In the case where the surface on the hard coat layer 2 side of the hard coat film 10 according to the present embodiment has a sea-island structure, the shape of the island-shaped portion is not limited. It may be circular or non-circular (irregular). The individual area of the island portion is not limited. As an example, the diameter in terms of a circle is 10 nm or more and 5 μm or less. As a more specific example of the island-shaped part, there is a case where it is measured as a shape close to a circle having a diameter of about 50 nm to 3 μm.

  When the surface of the hard coat layer 2 side of the hard coat film 10 according to the present embodiment has the above-described sea-island structure, the ratio of the total area of the island-shaped portions to the total area of the sea-shaped portions (in this specification, “ The sea-island ratio is also not limited. From the viewpoint of stably forming the sea-island structure, the sea-island ratio is preferably in the range of 5/95 to 95/5, more preferably in the range of 25/75 to 75/25, and 33/67. To 67/33 is particularly preferred.

(1-5) Thickness The thickness of the hard coat film 10 according to the present embodiment can be appropriately selected depending on the properties and applications of the adherend, and is not particularly limited. For example, it can be in the range of 10 μm to 600 μm, preferably in the range of 10 μm to 150 μm.

(2) Base Film The base film 1 included in the hard coat film 10 according to the present embodiment is not particularly limited as long as it has a film shape, but may be colorless and transparent. preferable. The base film 1 according to one embodiment is made of a transparent plastic film. Examples of the transparent plastic film include polyolefin resins such as polyethylene, polypropylene, poly-4-methylpentene-1, and polybutene-1, polyester resins such as polyethylene terephthalate and polyethylene naphthalate, polycarbonate resins, and polyvinyl chloride resins. Film made of cellulose resin such as polyphenylene sulfide resin, polyether sulfone resin, polyethylene sulfide resin, polyphenylene ether resin, styrene resin, acrylic resin, polyamide resin, polyimide resin, cellulose acetate Or these laminated | multilayer films are mentioned. Among these, a polyethylene terephthalate film is particularly preferable.

  There is no restriction | limiting in particular as thickness of the base film 1 with which the hard coat film 10 which concerns on this embodiment is provided, It selects suitably according to the intended purpose of the hard coat film 10, and is 10-500 micrometers normally. From the viewpoint of improving the handleability and realizing weight reduction, the thickness of the base film 1 is preferably 200 μm or less, and more preferably 100 μm or less. The lower limit of the thickness of the base film 1 is not limited. From the viewpoint of improving the handleability, the thickness of the base film 1 is preferably 10 μm or more, and more preferably 20 μm or more.

  The base film 1 included in the hard coat film 10 according to this embodiment may include a weathering agent such as an antioxidant, an ultraviolet absorber, and a light stabilizer.

  The base film 1 included in the hard coat film 10 according to the present embodiment is exemplified by an element (a curl suppression layer, an adhesive layer, etc., which will be described later) laminated on at least one of the main surfaces thereof. In order to increase the peel strength against the surface, a surface treatment such as an oxidation method or an unevenness method may be applied. Examples of the oxidation method include corona discharge treatment, plasma treatment, chromic acid treatment (wet), flame treatment, hot air treatment, ozone / ultraviolet irradiation treatment, and the like. Examples include solvent processing methods. These surface treatment methods are appropriately selected depending on the type of the base film 1, but in general, the corona discharge treatment method is preferably used from the viewpoints of effects and operability. Further, a primer layer made of a silane coupling agent or the like may be provided.

(3) Hard Coat Layer The hard coat layer 2 included in the hard coat film 10 according to the present embodiment has a static friction coefficient of 0.2 or less on the surface opposite to the side facing the base film 1, and The contact angle with respect to oleic acid is 50 ° or more. Further, the surface of the hard coat layer 2 opposite to the side facing the base film 1 may have a water contact angle of 90 ° or more. The surface of the hard coat layer 2 opposite to the side facing the substrate film 1 is preferably capable of measuring the phase separation structure when measured in the tapping mode using a scanning probe microscope.

  The composition of the hard coat layer 2 is not limited as long as it satisfies the above-mentioned regulations concerning the coefficient of static friction and the regulations concerning the contact angle with oleic acid. The hard coat layer 2 can be formed from a coating solution containing a silicone material and a fluorine material. The coating liquid can be prepared by adding the components described later at a predetermined ratio and dissolving or dispersing them.

  Hereinafter, as a specific example, the coating liquid contains a silicone leveling agent as a silicone material and a fluorine leveling agent as a fluorine material, and a compound having an energy polymerizable functional group (in this specification, , Also referred to as “polymerizable compound”) will be described in detail.

(3-1) Polymerizable compound The specific structure and composition of the polymerizable compound contained in the coating liquid according to an embodiment of the present invention are not limited as long as the polymerizable compound has an energy polymerizable functional group.

  The number of energy polymerizable functional groups that the polymerizable compound has per molecule is not limited. The polymerizable compound may have one energy polymerizable functional group per molecule or may have a plurality of energy polymerizable functional groups. From the viewpoint of obtaining a hard hard coat layer, the polymerizable compound preferably contains a compound having two or more energy polymerizable functional groups per molecule.

  Examples of the energy polymerizable functional group possessed by the polymerizable compound include ethylenically unsaturated groups such as (meth) acryloyl group, vinyl group, allyl group and styryl group. Among these, the energy polymerizable functional group is preferably a (meth) acryloyl group because of its high reactivity. Hereinafter, the case where the energy polymerizable functional group is a (meth) acryloyl group will be described as a specific example. In the present specification, the “(meth) acryloyl group” means at least one of an acryloyl group and a methacryloyl group. The same applies to other similar words.

  The polymerizable compound may be composed of one type of compound or may be composed of a plurality of types of compounds. The polymerizable compound may contain a monomer or a polymer. When the polymerizable compound contains a polymer, the polymer may be an oligomer or a polymer.

  In the case where the polymerizable compound contains a monomer, examples of such a monomer include pentafunctional or higher polyfunctional acrylate monomers. Examples of pentafunctional or higher polyfunctional acrylate monomers include dipentaerythritol pentaacrylate, propionic acid modified dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, caprolactone modified dipentaerythritol hexaacrylate, dipentaerythritol pentamethacrylate, propionic acid. Examples thereof include modified dipentaerythritol pentamethacrylate, dipentaerythritol hexamethacrylate, and caprolactone-modified dipentaerythritol hexamethacrylate. Of these, dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate are preferred.

  Examples of the monomer that the polymerizable compound may include include a tetrafunctional or lower energy polymerizable monomer. Specific examples include monofunctional acrylates such as cyclohexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate, and isobonyl (meth) acrylate; 1,4-butanediol di ( (Meth) acrylate, 1,6-hexanediol di (meth) acrylate, neopentyl glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, neopentyl glycol adipate di (meth) acrylate, hydroxypivalate neopentyl glycol di (Meth) acrylate, dicyclopentanyl di (meth) acrylate, dimethylol tricyclodecane di (meth) acrylate, caprolactone-modified dicyclopentenyl di (meth) acrylate , Ethylene oxide modified di (meth) acrylate phosphate, allylated cyclohexyl di (meth) acrylate, isocyanurate di (meth) acrylate, trimethylolpropane tri (meth) acrylate, dipentaerythritol tri (meth) acrylate, propionic acid Modified dipentaerythritol tri (meth) acrylate, pentaerythritol tri (meth) acrylate, propylene oxide modified trimethylolpropane tri (meth) acrylate, tris (acryloxyethyl) isocyanurate, dipentaerythritol hexa (meth) acrylate, pentaerythritol Examples thereof include ethoxytetraacrylate, ditrimethylolpropane tetraacrylate, and pentaerythritol tetraacrylate.

  In the case where the polymerizable compound includes an oligomer, examples of the oligomer include a polyester acrylate oligomer, an epoxy acrylate oligomer, a urethane acrylate oligomer, and a polyol acrylate oligomer.

  As a specific example of the polymerizable compound, there may be mentioned a case where the above-mentioned pentafunctional or higher polyfunctional acrylate monomer is used. Another specific example of the polymerizable compound is a mixture of a polyfunctional acrylate monomer having 5 or more functional groups and an energy polymerizable oligomer and / or an energy polymerizable monomer having 4 or less functional groups.

  The content of the polymerizable compound in the coating liquid according to this embodiment is not limited. What is necessary is just to set so that the viscosity of a coating liquid may become appropriate while being able to form the hard-coat layer 2 appropriately. The mass ratio of the polymerizable compound to the entire solid content of the coating liquid is preferably 20% by mass or more and 99.9% by mass or less, and more preferably 30% by mass or more and 99% by mass or less.

(3-2) Silicone Material The silicone material having an energy polymerizable functional group is not particularly limited as long as it is a silicone material such as the above silicone leveling agent having an energy polymerizable functional group. Specifically, for example, polyether-modified polydimethylsiloxane having an energy polymerizable group such as GL-02R (trade name, manufactured by Kyoeisha Chemical Co., Ltd.) or UV AF-100 (trade name, manufactured by Nippon Synthetic Chemical Co., Ltd.) Silicone modified acrylic polymers can be used.

  Examples of commercially available silicone leveling agents include GL-02R (trade name, manufactured by Kyoeisha Chemical Co., Ltd.), FZ-2118, FZ-77, FZ-2161 (trade name, manufactured by Toray Dow Corning Co., Ltd.), and the like. , KP323, KP324, KP326, KP340, KP341 (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.), etc., TSF4440, TSF4441, TSF4445, TSF4450, TSF4446, TSF4452, TSF4453, TSF4460 BYK-300, BYK-302, BYK-306, BYK-307, BYK-320, BYK-325, BYK-330, BYK-331, BYK-333, BYK-341, B Polyether-modified silicone oil such as K-344, BYK-345, BYK-346, BYK-348, BYK-377, BYK-378, BYK-UV3500, BYK-3510, BYK-3570 (manufactured by BYK Japan Japan Co., Ltd.) (Polyoxyalkylene-modified silicone oil) and the like.

  You may use a silicone type material individually or in combination of 2 or more types.

  In the case where the coating liquid according to the present embodiment contains a polymerizable compound, the silicone material preferably has an energy polymerizable functional group. In this case, the silicone material is easily dissolved in the coating solution. And, by the polymerization reaction of the energy polymerizable functional group in the coating film of the coating liquid, the compatibility of the component based on the silicone-based material in the coating film of the coating liquid with other components in the coating film is increased. It changes and it becomes easy to measure a phase-separation structure in the surface of the hard-coat layer 2 obtained from the coating film of the coating liquid.

  The content of the silicone material in the coating liquid according to this embodiment is not limited. As an example of the mass ratio which occupies for solid content of a coating liquid, 0.05 mass% or more and 10 mass% or less can be mentioned, and 0.1 mass% or more and 5 mass% or less are mentioned as a preferable example.

(3-3) Fluorine Material The fluorine material having an energy polymerizable functional group is not particularly limited as long as it is a fluorine material such as the above-described fluorine leveling agent having an energy polymerizable functional group. Specifically, an oligomer having a hydrophilic group, a lipophilic group, a fluorine-containing group, and an energy polymerizable group can be used.

  Commercially available fluoro-leveling agents include RS-90 and other DIC Corporation MegaFuck (registered trademark) series, Footent (registered trademark) 710FL (trade name, manufactured by Neos Corporation), and Sumitomo 3M Corporation. Fluorinert series and so on.

  Content of the fluorine-type material in the coating liquid which concerns on this embodiment is not limited. As an example of the mass ratio which occupies for solid content of a coating liquid, 0.05 mass% or more and 10 mass% or less can be mentioned, and 0.1 mass% or more and 5 mass% or less are mentioned as a preferable example.

  You may use a fluorine-type material individually or in combination of 2 or more types.

  When the coating liquid which concerns on this embodiment contains a polymeric compound, it is preferable that a fluorine-type material has an energy polymerizable functional group. In this case, the fluorine material is easily dissolved in the coating solution. As the polymerization reaction of the energy polymerizable functional group proceeds in the coating film of the coating liquid, the compatibility of the component based on the fluorine material in the coating film of the coating liquid with other components in the coating film changes. Thus, the phase separation structure is easily measured on the surface of the hard coat layer 2 obtained from the coating film of the coating liquid. From the viewpoint that the phase separation structure can be more stably measured on the surface of the hard coat layer 2, the coating liquid according to the present embodiment contains a polymerizable compound, and the silicone material and the fluorine material are energy polymerizable. It preferably has a functional group.

  The mass ratio of the silicone material and the fluorine material (silicone material / fluorine material) contained in the coating liquid according to the present embodiment is not limited. From the viewpoint that the hard coat film 10 according to the present embodiment has excellent slip properties and excellent antifouling properties, the mass ratio is preferably in the range of 10/90 to 90/10, from 30/70. More preferably, it is within the range of 80/20.

(3-4) Other components In addition to the polymerizable compound, the silicone-based material, and the fluorine-based material described above, the coating liquid according to this embodiment includes a filler, a polymerization initiator, and various additions as necessary. Components such as a photosensitizer, an antioxidant, an ultraviolet absorber, an infrared absorber, an antistatic agent, a light stabilizer, and an antifoaming agent may be contained. In addition to these active ingredients, the coating liquid according to the present embodiment preferably contains a solvent as necessary, and is adjusted to a concentration and viscosity suitable for coating.

  Some of these optional additives are described below.

(3-4-1) Filler The coating liquid according to the present embodiment may contain a filler. The type, shape and content of the filler are not limited. When the coating liquid contains a filler, the hardness of the hard coat layer 2 formed from the coating liquid can be increased. The filler contained in the coating liquid which concerns on this embodiment may be comprised from 1 type, and may be comprised from 2 or more types.

  The filler may contain an inorganic material or an organic material, but from the viewpoint of easily increasing the hardness of the hard coat layer 2, the filler contains an inorganic material. Preferably, it is more preferably composed of an inorganic material.

  Examples of materials that give inorganic fillers include metal oxides such as silica, aluminum oxide, zirconia, titania, zinc oxide, germanium oxide, indium oxide, tin oxide, indium tin oxide (ITO), antimony oxide, and cerium oxide; And metal fluorides such as magnesium fluoride and sodium fluoride. As long as the hard coat layer 2 is colorless and transparent, a metal, a metal sulfide, a metal nitride, or the like may be used.

  Among these, silica and aluminum oxide are preferable as materials for providing an inorganic filler because it is easier to increase the hardness of the hard coat layer 2 and it is easily available. From the viewpoint of increasing the refractive index of the hard coat layer 2, the coating liquid may contain a filler made of zirconia, titania, antimony oxide, or the like. Conversely, from the viewpoint of reducing the refractive index of the hard coat layer 2, the coating liquid may contain a filler made of a fluoride such as magnesium fluoride and sodium fluoride, a hollow silica filler, and the like. From the viewpoint of imparting antistatic properties and electrical conductivity to the hard coat layer 2, the coating solution may contain a filler made of indium tin oxide (ITO), tin oxide, or the like.

  The surface of the filler may be chemically modified. The specific structure of chemical modification is not limited. As an example, it has an energy polymerizable functional group like a polymerizable compound through a silane coupling agent or the like. In this case, peeling between the filler and the polymerizable compound is less likely to occur, and a preferable tendency that the hardness of the hard coat layer 2 is increased and transparency is increased is easily observed. Reactive silica can be mentioned as a specific example of the chemically modified filler. In the present specification, silica having an energy polymerizable functional group is referred to as reactive silica, and silica having no energy polymerizable functional group is referred to as non-reactive silica.

  The filler may be spherical or non-spherical. When it is non-spherical, it may be indefinite, or may have a shape with a high aspect ratio such as a needle shape or a scale shape. Since the transparency of the hard coat layer tends to increase, the filler may preferably be spherical.

  The size of the filler is not limited. The average particle size of the filler is usually from about 5 nm to about 2 μm, and the transparency of the hard coat layer is likely to increase. Therefore, the average particle size of the filler may preferably be 5 nm to 100 nm. In addition, let the average particle diameter below 1 micrometer of the filler in this specification be the value measured by the dynamic light-scattering method using the particle size distribution measuring apparatus (The Nikkiso Co., Ltd. make, Nanotrack Wave-UT151). The average particle size of 1 μm or more of the filler is a value measured by a laser diffraction / scattering method using a particle size distribution measuring device (manufactured by Nikkiso Co., Ltd., Microtrac MT3000II).

  When the coating liquid which concerns on this embodiment contains a filler, content of the filler in a coating liquid is not limited. What is necessary is just to set suitably so that the hardness of a hard-coat layer, the grade of shrinkage | contraction at the time of forming a hard-coat layer from a coating film, transparency, etc. can be set to a desired range. Illustratively, a specific numerical value range may be 5 to 200 parts by mass with respect to 100 parts by mass of the polymerizable compound, and a preferred range is 10 to 150 parts by mass.

(3-4-2) Polymerization initiator

  The coating liquid according to the present embodiment may contain a polymerization initiator. In the case where the coating liquid according to the present embodiment contains a polymerization initiator, the type is not limited. The polymerization initiator may be either a photopolymerization initiator or a thermal polymerization initiator, and both may be contained in the coating liquid. By containing a polymerization initiator, it is possible to advance the polymerization reaction of the polymerizable compounds in the coating film by irradiating the coating film of the coating liquid with ultraviolet rays or applying heat to the coating film. It becomes.

  Examples of the photopolymerization initiator include acylphosphine oxide, acetophenone, benzophenone, benzoin, thioxanthone, and imidazole photopolymerization initiators.

  Examples of the acylphosphine oxide photopolymerization initiator include 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide, bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide, and the like.

  Examples of the acetophenone photopolymerization initiator include 1-hydroxycyclohexyl phenyl ketone, diethoxyacetophenone, 2-hydroxy-1- [4- (2-hydroxyethoxy) phenyl] -2-methylpropan-1-one, 2 -Benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1,2- (dimethylamino) -2-[(4-methylphenyl) methyl] -1- [4- (4-morpholinyl) Phenyl] -1-butanone, benzyldimethyl ketal, 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 2-hydroxy-1- {4- [4- (2-hydroxy-2-methyl-propionyl) -benzyl] pheni } -2-methylpropan-1-one, and 2,2-dimethoxy-1,2-and the like.

  Examples of the benzophenone photopolymerization initiator include benzophenone, 4-phenylbenzophenone, 4-benzoyl-4′-methyldiphenyl sulfide, 3,3 ′, 4,4′-tetra (tert-butylperoxycarbonyl) benzophenone, 2,4,6-trimethylbenzophenone, 4,4′-bis-dimethylaminobenzophenone and the like can be mentioned.

  Examples of the benzoin photopolymerization initiator include benzoin compounds such as benzoin, methylbenzoin, and ethylbenzoin, and benzoin ether compounds such as benzoin methyl ether, benzoin ethyl ether, benzoin isobutyl ether, and benzoin phenyl ether.

  Examples of the thioxanthone photopolymerization initiator include 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, 1-chloro-4-propoxythioxanthone, 2,4-dichlorothioxanthone, and the like.

  Examples of the imidazole photopolymerization initiator include 2,2′-bis (o-chlorophenyl) -4,4 ′, 5,5′-tetraphenylbisimidazolyl, 2,2′-bis (o-chlorophenyl)- 4,4 ′, 5,5′-tetra- (p-methoxyphenyl) bisimidazolyl, 2,2′-bis (2-chlorophenyl) -4,4 ′, 5,5′-tetraphenyl-1,2 ′ -Hexaarylbisimidazole compounds such as biimidazole.

  These photopolymerization initiators may be used alone or in combination of two or more.

  Examples of the thermal polymerization initiator include benzoyl peroxide, t-butyl perbenzoate, cumene hydroperoxide, diisopropyl peroxydicarbonate, di-n-propyl peroxydicarbonate, and di (2-ethoxyethyl). Peroxydicarbonate, t-butylperoxyneodecanoate, t-butylperoxybivalate, t-hexylperoxypivalate, (3,5,5-trimethylhexanoyl) peroxide, dipropionyl peroxide, lauroyl Organic peroxides such as peroxide and diacetyl peroxide; 2,2′-azobisisobutyronitrile, 2,2′-azobis (2-methylbutyronitrile), 1,1′-azobis (cyclohexane- 1-carbonyl), 2,2′-azobis (2,4-dimethylvale) Nitrile), 2,2′-azobis (2,4-dimethyl-4-methoxyvaleronitrile), dimethyl 2,2′-azobis (2-methylpropionate), 4,4′-azobis (4-cyanovale) Rick acid), 2,2′-azobis (2-hydroxymethylpropionitrile), 2,2′-azobis [2- (2-imidazolin-2-yl) propane] and the like.

  These thermal polymerization initiators may be used alone or in combination of two or more.

  Among these polymerization initiators, a photopolymerization initiator is preferable from the viewpoint of reactivity.

  When the coating liquid which concerns on this embodiment contains a polymerization initiator, content of the polymerization initiator in a coating liquid is not specifically limited. Illustratively, a specific numerical range is exemplified by a range of 1 to 15 parts by mass with respect to 100 parts by mass of the polymerizable compound, and a range of 2 to 10 parts by mass is exemplified as a preferred range. The

(3-4-3) Photosensitizer When the polymerization initiator contained in the coating liquid according to this embodiment is a photopolymerization initiator, the coating liquid according to this embodiment is a photopolymerization initiator. And photosensitizers such as tertiary amines such as N, N-dimethylaminobenzoic acid ethyl ester, N, N-dimethylaminobenzoic acid isoamyl ester, pentyl-4-dimethylaminobenzoate, triethylamine, triethanolamine and the like. May be used in combination. These photosensitizers can be used alone or in admixture of two or more.

(3-4-4) Solvent Examples of the solvent that may be contained in the coating liquid according to the present embodiment include aliphatic hydrocarbons such as hexane, heptane, and cyclohexane; aromatic hydrocarbons such as toluene and xylene, and chloride. Halogenated hydrocarbons such as methylene and ethylene chloride; alcohols such as methanol, ethanol, propanol, butanol and 1-methoxy-2-propanol; ketones such as acetone, methyl ethyl ketone, 2-pentanone, methyl isobutyl ketone and isophorone; ethyl acetate, Examples thereof include esters such as butyl acetate; cellosolve solvents such as ethyl cellosolve.

(3-5) Optical Properties A hard coat film comprising a hard coat layer having a thickness of 30 μm and a base film formed from the coating liquid according to the present embodiment is a haze measured according to JIS K7136 (2000). Is 1% or less, more preferably 0.5 or less.

  A hard coat film comprising a hard coat layer having a thickness of 30 μm and a base film formed from the coating liquid according to the present embodiment has a total light transmittance of 85% or more measured in accordance with JIS K7361-1. More preferably, it is 90% or more.

  When the haze and the total light transmittance are such values, it is possible to obtain a hard coat film 10 that maintains transparency without adversely affecting image display such as a display.

(3-6) Thickness The thickness of the hard coat layer 2 included in the hard coat film 10 according to this embodiment is not particularly limited. For example, it is 1 μm or more and 100 μm or less, more preferably 3 μm or more and 60 μm or less, and particularly preferably 5 μm or more and 30 μm or less.

(3-7) Hardness The hardness of the hard coat layer 2 included in the hard coat film 10 according to the present embodiment is not particularly limited. It should be set as necessary. As an example, the pencil hardness is H or more. If the pencil hardness of the hard coat layer 2 is H or more, it can be said that the hard coat layer has a sufficiently high hardness. If the pencil hardness of the hard coat layer 2 is 3H or more, it can be said that the hard coat layer has a particularly high hardness.

(4) Other Elements in Hard Coat Film The hard coat film 10 according to the present embodiment may include components other than the base film 1 and the hard coat layer 2. Specific examples of such elements include a curl suppression layer, a pressure-sensitive adhesive layer, and a release sheet.

(4-1) Curling Suppression Layer As shown in FIG. 2, the hard coat film 10 according to the present embodiment is provided with the curl suppression layer 3 on the surface opposite to the hard coat layer 2 of the base film 1. You can also. As long as curling can be suppressed in the hard coat film 10 according to the present embodiment, the composition and thickness of the curl suppressing layer 3 are not particularly limited. As an example, you may be comprised from the material equivalent to the hard-coat layer of the hard-coat film 10 which concerns on this embodiment. Specifically, the curl suppressing layer 3 may be a photocurable resin made of an organic-inorganic hybrid material or an organic material that is the same material as or different from the hard coat layer.

(4-2) Adhesive layer The hard coat film 10 which concerns on one Embodiment of this invention shown by FIG. 1 has an adhesive layer on the surface on the opposite side to one main surface 1A of the base film 1. FIG. You may have. The hard coat film 10 according to another embodiment of the present invention shown in FIG. 2 may include an adhesive layer on the surface of the curl suppression layer 3. The pressure-sensitive adhesive layer provided in the hard coat film 10 according to the present embodiment is a layered body formed from a pressure-sensitive adhesive composition. The composition of the pressure-sensitive adhesive composition constituting the pressure-sensitive adhesive layer is not particularly limited. Examples of the pressure-sensitive adhesive that is the main component include rubber-based, acrylic-based, silicone-based, and urethane-based pressure-sensitive adhesives. One type of these may be used, or two or more types may be used.

  The acrylic pressure-sensitive adhesive among the above will be described in more detail. The main component is an acrylic copolymer obtained by copolymerizing a functional group-containing monomer and another monomer such as an acrylic ester or methacrylic ester. And The pressure-sensitive adhesive composition may further contain a cross-linking agent, a tackifier, a filler, an antioxidant, an antistatic agent, an ultraviolet absorber and the like as necessary.

  Examples of the functional group-containing monomer include carboxyl group-containing monomers such as acrylic acid and methacrylic acid, and hydroxyl group-containing monomers such as 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, and 4-hydroxybutyl acrylate. . The functional group-containing monomer preferably includes 0.3 to 5.0% by mass as a monomer unit based on the whole monomer constituting the acrylic copolymer (100% by mass). When the acrylic copolymer contains a functional group, the cohesive force can be adjusted by reaction with the crosslinking agent, and the adhesive force and heat resistance can be improved.

  The crosslinking agent used in the pressure-sensitive adhesive composition is not particularly limited and is appropriately selected from those commonly used in pressure-sensitive adhesive compositions mainly composed of acrylic materials. For example, polyisocyanate A compound, an epoxy resin, a melamine resin, a urea resin, a dialdehyde, a methylol polymer, an aziridine compound, a metal chelate compound, a metal alkoxide, a metal salt, or the like is used, and a polyisocyanate compound is preferably used.

  The thickness of the pressure-sensitive adhesive layer is not particularly limited. It should be set appropriately according to the application, and is usually about 1 μm or more and 500 μm or less.

(4-3) Release sheet When the hard coat film 10 according to the present embodiment includes the above-mentioned pressure-sensitive adhesive layer, for the purpose of protecting the surface opposite to the side facing the base film 1 until use. The release surface of the release sheet may be affixed to the surface. As this release sheet, for example, a release treatment comprising applying a release agent to one main surface of a plastic film such as a polyester film such as polyethylene terephthalate, polybutylene terephthalate or polyethylene naphthalate, or a polyolefin film such as polypropylene or polyethylene. The thing which was given is mentioned. As the release agent, silicone-based, fluorine-based, long-chain alkyl-based, and the like can be used, and among these, a silicone-based material that is inexpensive and provides stable performance is preferable. The thickness of the release sheet is not particularly limited.

  The thickness of the release sheet is not limited. Usually, it is about 20-250 micrometers.

2. Manufacturing method of hard coat film The manufacturing method of the hard coat film 10 which concerns on this embodiment is not limited. Hereinafter, an example (first method) of producing the hard coat film 10 shown in FIG. 1 and an example (second method) of producing the hard coat film 10 shown in FIG. 2 will be described.

(1) 1st method (1-1) application process First, the above-mentioned coating liquid is apply | coated on one main surface 1A of the base film 1 with which the hard coat film 10 which concerns on this embodiment is equipped, A coating film is formed on the main surface 1A. The application amount of the coating liquid is not limited. It sets suitably according to the thickness of the hard-coat layer 2 formed from the coating film obtained by application | coating. The application method is not particularly limited. Examples thereof include a bar coating method, a knife coating method, a roll coating method, a blade coating method, a die coating method, and a gravure coating method. If necessary, the coating film formed on one main surface 1A of the base film 1 may be dried to remove volatile components, particularly the solvent, contained in the coating film. The conditions for drying are arbitrary, and include, for example, drying at 80 to 140 ° C. for several minutes to several tens of minutes.

(1-2) Curing step The coating film formed on one main surface 1A of the base film 1 by the coating process is contained in the coating film by irradiating energy rays or applying heat thereto. The polymerization reaction of the polymerizable compound is advanced. As the polymerization reaction proceeds, the coating film becomes the hard coat layer 2, and the basic structure of the hard coat film 10 according to the present embodiment including the base film 1 and the hard coat layer 2 is obtained.

  Examples of the energy used when the polymerization reaction of the polymerizable compound is advanced by energy include heat and energy rays, and examples of the energy rays include ionizing radiation, that is, X-rays, ultraviolet rays, and electron beams. Among these, ultraviolet rays that are relatively easy to introduce irradiation equipment are preferable.

When ultraviolet rays are used as the ionizing radiation, near ultraviolet rays including ultraviolet rays having a wavelength of about 200 to 380 nm may be used for ease of handling. The amount of ultraviolet rays may be appropriately selected depending on the thickness of the polymerizable compound of the type and the hard coat layer 2 is generally 50 to 800 mJ / cm ² or so, preferably 100~650mJ / cm ^2, 200~500mJ / Cm ² is more preferable. Moreover, ultraviolet illuminance is about 50-500 mW / cm < ² > normally, 100-450 mW / cm < ² > is preferable and 200-400 mW / cm < ² > is more preferable. There is no restriction | limiting in particular as an ultraviolet-ray source, For example, a high pressure mercury lamp, a metal halide lamp, the light emitting diode (UV-LED) of an ultraviolet region, etc. are used.

  When the polymerization reaction of the polymerizable compound proceeds by applying heat, the heating conditions are appropriately set based on the components and content of the polymerization initiator used. In the above-described coating step, it may be possible to advance the polymerization reaction of the polymerizable compound by optionally performing heating for drying. In this case, drying in the coating process substantially corresponds to the curing process.

(1-3) Pressure-sensitive adhesive layer forming step When the hard coat film 10 is thus obtained, a pressure-sensitive adhesive layer is formed on the main surface opposite to the main surface 1A of the base film 1 as necessary. The formation method of an adhesive layer is arbitrary. For example, a pressure-sensitive adhesive layer-forming coating solution comprising a pressure-sensitive adhesive composition, which is a composition for forming a pressure-sensitive adhesive layer, or a solvent added to the pressure-sensitive adhesive composition as necessary, The pressure-sensitive adhesive layer can be obtained by coating the main surface of the base film 1 opposite to the main surface 1A and drying it. When the pressure-sensitive adhesive composition contains a crosslinking agent, the reaction of the crosslinking agent may be advanced by heating or curing the pressure-sensitive adhesive layer as necessary.

(1-4) Release sheet sticking step When the pressure-sensitive adhesive layer forming step is performed as described above, the exposed surface of the obtained pressure-sensitive adhesive layer, that is, the side facing the base film 1 in the pressure-sensitive adhesive layer. The release surface of the release sheet is affixed to the opposite surface to protect the above surface of the pressure-sensitive adhesive layer.

(2) Second Method The second method is different from the first method in that it includes a step of forming a curl suppression layer 3 on the other surface 1B of the base film 1. Hereinafter, the curl suppression layer 3 is formed from a coating liquid in the same manner as the hard coat layer 2, and the curl suppression layer 3 is formed by curing the coating film of the coating liquid. This will be described as an example.

  The second method includes a second application step of applying a coating liquid for forming the curl suppression layer 3 on the other surface 1B of the base film 1 and forming a coating film of the coating liquid. . The application amount of the coating liquid in the second application step is not limited. It is appropriately set according to the thickness of the curl suppressing layer 3 formed from the coating film obtained by coating. The application method is not particularly limited. Examples thereof include a bar coating method, a knife coating method, a roll coating method, a blade coating method, a die coating method, and a gravure coating method. If necessary, the coating film formed on one main surface 1B of the base film 1 may be dried to remove volatile components, particularly the solvent, contained in the coating film. The conditions for drying are arbitrary, and include, for example, drying at 80 to 140 ° C. for several minutes to several tens of minutes.

  A 2nd method is contained in a coating film by irradiating an energy ray or giving heat to the coating film formed on one main surface 1B of the base film 1 by the 2nd application | coating process. A second curing step for allowing the polymerization reaction of the polymerizable compound to proceed. As the polymerization reaction proceeds, the coating film becomes the curl suppression layer 3. When the coating liquid contains a thermal polymerization initiator, the drying performed in the second application step described above may be positioned as the second curing step.

  In the second method, the order of performing the coating process and the curing process for forming the hard coat layer 2 and the second coating process and the second curing process for forming the curl suppression layer 3 is not limited. An application process and a 2nd application process may be performed simultaneously, and may be performed separately. The order of performing each coating step in the case of being performed separately is arbitrary. Moreover, after forming one of the hard coat layer 2 and the curl suppression layer 3, a coating film according to the other of the hard coat layer 2 and the curl suppression layer 3 may be formed, or both surfaces 1A of the base film 1 and After forming a coating film on 1B, the hard coat layer 2 and the curl suppression layer 3 may be formed by a single curing step.

  After the hard coat film 10 having the structure shown in FIG. 2 is obtained, when the pressure-sensitive adhesive layer forming step and, if necessary, the release sheet attaching step are performed, the curl suppression layer 3 is the pressure-sensitive adhesive layer forming step. It is preferable that it is a process target.

  The embodiment described above is described for facilitating understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

[Example 1]
(1) Preparation of coating solution A coating solution having the following composition was prepared.
i) As a component containing a polymerizable compound and a filler, “OPSTAR Z7530” manufactured by JSR (containing 60 parts by mass of reactive silica, 40 parts by mass of dipentaerythritol hexaacrylate and a photopolymerization initiator),
ii) A silicone leveling agent (“GL-02R” manufactured by Kyoeisha Chemical Co., Ltd.) as a silicone material;
iii) Fluorine leveling agent (“RS-90” manufactured by DIC) as the fluorinated material, and iv) Methyl isobutyl ketone (MIBK) as the solvent.
In the coating solution thus obtained, the sum of the addition amount of the silicone material and the addition amount of the fluorine material was 1% by mass with respect to the solid content of the coating solution. Moreover, the compounding ratio (mass ratio) of the silicone material and the fluorine material in the coating solution was 33:67.

(2) Production of hard coat film Amount of the above coating solution on one main surface of a polyethylene terephthalate base film having a thickness of 75 μm, with a Mayer bar, having a thickness of 30 μm as a hard coat layer It was applied and dried in a drying oven at 100 ° C. for 2 minutes to form a coating film on the main surface. Using the high-pressure mercury lamp (made by Eye Graphics Co., Ltd., illuminance 200 mW / cm ² ), the irradiation amount is 600 mJ / cm ² with respect to the laminate composed of the obtained base film and coating film. Irradiated with light. Thus, the coating film was cured to obtain a hard coat film including a hard coat layer having a thickness of 30 μm.

[Examples 2 to 4]
A hard coat film was obtained in the same manner as in Example 1 except that the blending ratio (mass ratio) of the silicone material and the fluorine material was changed to the values shown in Table 1.

Example 5
A hard coat film was obtained in the same manner as in Example 1 except that another fluorine leveling agent (“710FL” manufactured by Neos) was used as the fluorine material.

Example 6
A fluorine leveling agent (“RS-90” manufactured by DIC) is used as the fluorine-based material, and another silicone leveling agent (“UV AF-100” manufactured by Nippon Gosei Kagaku) is used as the silicone-based material. A hard coat film was obtained in the same manner as in Example 1 except that the blending ratio (mass ratio) of the system material and the fluorine material was changed to the values shown in Table 1.

[Comparative Example 1]
As a hard coat layer forming material, “OPSTAR Z7530” (containing 60 parts by mass of reactive silica, 40 parts by mass of dipentaerythritol hexaacrylate and a photopolymerization initiator) manufactured by JSR Co. was used as a coating solution. Using the obtained coating solution, a hard coat film was obtained in the same manner as in Example 1.

[Comparative Example 2]
A coating solution having the following composition was prepared.
i) As a component containing a polymerizable compound and a filler, “OPSTAR Z7530” manufactured by JSR (containing 60 parts by mass of reactive silica, 40 parts by mass of dipentaerythritol hexaacrylate and a photopolymerization initiator),
ii) A silicone leveling agent (“GL-02R” manufactured by Kyoeisha Chemical Co., Ltd.) as a silicone material, and iii) methyl isobutyl ketone (MIBK) as a solvent.
In the coating solution thus obtained, the addition amount of the silicone material was 1% by mass with respect to the solid content of the coating solution. Using this coating solution, a hard coat film was obtained in the same manner as in Example 1.

[Comparative Example 3]
A coating solution having the following composition was prepared.
i) As a component containing a polymerizable compound and a filler, “OPSTAR Z7530” manufactured by JSR (containing 60 parts by mass of reactive silica, 40 parts by mass of dipentaerythritol hexaacrylate and a photopolymerization initiator),
ii) Fluorine-based leveling agent (“RS-90” manufactured by DIC) as the fluorinated material, and iii) Methyl isobutyl ketone (MIBK) as the solvent.
In the coating solution thus obtained, the addition amount of the fluorine-based material was 1% by mass with respect to the solid content of the coating solution. Using this coating solution, a hard coat film was obtained in the same manner as in Example 1.

[Comparative Example 4]
A coating solution having the following composition was prepared.
i) As a component containing a polymerizable compound and a filler, “OPSTAR Z7530” manufactured by JSR (containing 60 parts by mass of reactive silica, 40 parts by mass of dipentaerythritol hexaacrylate and a photopolymerization initiator),
ii) A silicone leveling agent (“GL-02R” manufactured by Kyoeisha Chemical Co., Ltd.) as a silicone material;
iii) Fluorine leveling agent (“RS-90” manufactured by DIC) as the fluorinated material, and iv) Methyl isobutyl ketone (MIBK) as the solvent.
In the coating solution thus obtained, the sum of the addition amount of the silicone material and the addition amount of the fluorine material was 1% by mass relative to the solid content of the coating solution. Moreover, the compounding ratio (mass ratio) of the silicone-based material and the fluorine-based material in the coating solution was 95: 5.
Using the coating solution thus obtained, a hard coat film was obtained in the same manner as in Example 1.

[Comparative Example 5]
Example 1 except that the blending amount of the silicone material and the blending amount of the fluorine-based material were changed so that the blending ratio (mass ratio) of the silicone-based material and the fluorine-based material in the coating liquid was 5:95. A coating solution was prepared in the same manner as described above, and a hard coat film was obtained in the same manner as in Example 1 using this coating solution.

[Test Example 1] <Measurement of static friction coefficient>
Using a portable friction meter “Muse TYPE 94i-II: Shinto Kagaku Co., Ltd.”, six locations on the surface of the hard coat layer of each Example and Comparative Example were measured, and the average value was taken as the static friction coefficient.

[Test Example 2] <Contact angle with oleic acid and contact angle with water>
Using a fully automatic contact angle meter “DM-701: Kyowa Interface Science Co., Ltd.”, 2 μL of oleic acid or water was dropped on each of the hard coat layer surfaces of each Example and Comparative Example and measured, The average value was taken as the contact angle.

[Test Example 3] <Measurement with a scanning probe microscope>
Using a scanning probe microscope (“SPM-9700” manufactured by Shimadzu Corp.), the surface of each hard coat film prepared in Examples and Comparative Examples is set to a tapping mode. Whether or not a phase separation structure is observed in the measurement image was confirmed. When the phase separation structure was observed, the area of each phase was determined in the measurement region using the image analysis software Image-pro manufactured by Media Cybernetics, and the area ratio of these phases was determined. In addition, the image of the phase separation structure was visually confirmed to confirm what structure the phase separation shape was. The results of observation etc. are shown in Table 2. In addition, measurement images (photographs) according to Examples 1 and 5 and Comparative Examples 1 to 3 are shown in FIGS. 3 to 7, respectively.

[Test Example 4] <Measurement of haze value>
The hard coat film produced from each of the coating liquid produced in the Example and the comparative example was cut into 50 mm x 50 mm size, and it was set as the test member for haze value measurement.
About the obtained test member, haze value was measured using haze meter "NDH-2000: Nippon Denshoku Co., Ltd." according to JISK7136 (2000). The measurement results are shown in Table 2.

[Test Example 5] <Measurement of total light transmittance>
A test member produced in the same manner as in Test Example 4 and provided with a hard coat layer having a thickness of 30 μm was subjected to a total light beam using a haze meter “NDH-2000: manufactured by Nippon Denshoku Co., Ltd.” according to JIS K7361-1. The transmittance was measured. The measurement results are shown in Table 2.

  In addition, the slip property and antifouling property of the surfaces of the hard coat layers of Examples 1 to 6 were excellent.

  Since the hard coat film of the present invention has excellent slip and water / oil repellency, it has excellent antifouling properties. Therefore, it is suitably used as a member of an electronic device that performs an operation when a person directly touches with a finger such as various display devices and touch panels. The coating liquid for forming a hard coat layer of the present invention is used for obtaining the hard coat film as described above. And the manufacturing method of the hard coat film of this invention is used in order to manufacture the above hard coat films.

DESCRIPTION OF SYMBOLS 1 ... Base film 2 ... Hard-coat layer 3 ... Curl suppression layer

Claims (7)

A hard coat film comprising a base film and a hard coat layer laminated on at least one surface of the base film,
The surface of the hard coat film on the hard coat layer side has a static friction coefficient of 0.2 or less and a contact angle with respect to oleic acid is 50 ° or more,
The hard coat layer is formed from a coating liquid containing a filler,
The hard coat layer constitutes at least one of the outermost layers of the hard coat film ,
The hard coat film, wherein a phase separation structure can be measured when the surface of the hard coat film on the hard coat layer side is measured in a tapping mode using a scanning probe microscope . The hard coat film according to claim 1 , wherein the phase separation structure is composed of a sea-like portion and a plurality of island-like portions that are independent from each other in the sea-like portion. 3. The hard coat film according to claim 2 , wherein the phase separation structure has a ratio of the total area of the island-shaped parts to the total area of the sea-shaped parts within a range of 5/95 to 95/5. The said coating liquid is a hard coat film as described in any one of Claim 1 to 3 containing a silicone type material and a fluorine-type material. The hard coat film according to claim 4 , wherein the coating liquid contains a compound having an energy polymerizable functional group, and the silicone material and the fluorine material have an energy polymerizable functional group. Compounds having an energy polymerizable functional group, a silicone-based material having an energy polymerizable functional group, characterized in that it contains a fluorine-based material and a filler having an energy polymerizable functional group, any of claims 1 to 5 one The coating liquid for forming the hard-coat layer as described in a term . It is a manufacturing method of the hard coat film according to any one of claims 1 to 5 ,
A coating liquid for forming a hard coat layer according to claim 6 is applied to one surface of the base film to form a coating film on the base film, and the coating film is irradiated with energy to form the base. A method for producing a hard coat film, comprising forming a hard coat layer on a material film.