KR20110007477A - Anti-static coating agent composition and optical film using the same - Google Patents
Anti-static coating agent composition and optical film using the same Download PDFInfo
- Publication number
- KR20110007477A KR20110007477A KR1020090065023A KR20090065023A KR20110007477A KR 20110007477 A KR20110007477 A KR 20110007477A KR 1020090065023 A KR1020090065023 A KR 1020090065023A KR 20090065023 A KR20090065023 A KR 20090065023A KR 20110007477 A KR20110007477 A KR 20110007477A
- Authority
- KR
- South Korea
- Prior art keywords
- antistatic
- antistatic coating
- coating
- weight
- film
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Optics & Photonics (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nonlinear Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Polarising Elements (AREA)
- Paints Or Removers (AREA)
Abstract
Description
The present invention relates to an improved antistatic coating liquid composition and an optical film using the same to improve the coating property to solve the problem of appearance defects generated in the coating layer, and to maintain the antistatic property, reliability durability and transparency.
In general, a liquid crystal display device (LCD) requires a liquid crystal cell and a polarizing plate containing a liquid crystal, and an appropriate adhesive layer or adhesive layer for bonding them should be used.
In addition, the polarizing plate is stretched in a predetermined direction and protects both sides of the polyvinyl alcohol (PVA) polarizer (or 'flat film') in which an iodine compound or a dichroic polarizer is adsorbed and oriented. It includes a polarizer protective film laminated in order to. Specifically, one side of the polarizer is provided with a polarizer protective film such as triacetyl cellulose (TAC) and the pressure-sensitive adhesive layer and the release film to be bonded to the liquid crystal cell on the protective film in turn, the other side The polarizer protective film and the surface treatment film or the surface protection film is composed of a multi-layer laminate laminated in this order.
In the step of bonding the polarizing plate to the liquid crystal cell as a multilayer laminate having such a structure, the release film is first peeled off from the pressure-sensitive adhesive layer, and the surface protective film is also peeled off after pasting onto the liquid crystal cell. At this time, the release film and the surface protection film is made of a plastic material having high electrical insulation, so that the static electricity is generated when peeling and removing it.
The static electricity generated in this way may cause foreign matter to be adsorbed on the optical member to contaminate the surface, staining due to distortion of the liquid crystal alignment, and may cause breakage of thin film transistor (TFT) lines. In particular, as the size of the liquid crystal display panel increases in recent years, the size of the polarizing plate is also increasing accordingly, and the amount of static electricity is further increased as the process speeds up to improve productivity, and thus, the antistatic effect is excellent. There is an urgent need for a polarizer having a function to quickly remove generated static electricity.
In order to solve the problem of generating static electricity as described above, a method of providing an antistatic property by providing an antistatic layer between the polarizer protective film and the pressure-sensitive adhesive layer has been proposed. As the antistatic coating agent for forming the antistatic layer, a tin oxide-based fine particle having transparency and excellent antistatic property has been proposed. Korean Patent Laid-Open Publication No. 2006-0045384 is an antistatic coating agent that provides adhesion to a polyester film, and uses an aqueous dispersion in which the fine particles of the polyester resin and the tin oxide fine particles are dispersed in an aqueous medium. It is starting.
In addition, a water-soluble or water-dispersible conductive polymer has been proposed as a material for forming an antistatic layer. Korean Patent Laid-Open No. 2004-0091556 uses an aqueous solution or an aqueous dispersion containing a water-soluble or water-dispersible conductive polymer as a material for forming an antistatic layer. It is starting.
However, the antistatic coatings described in the above documents, when applied to a polarizer protective film such as TAC as a base film for the formation of the coating layer, the coating property by the elution of the added plasticizer to improve the processability in the production of the TAC Degrades. Due to this, appearance defects such as a drop uncoating phenomenon in which the coating layer is not formed when the coating agent is applied and the coated coating is agglomerated again, and a coating slip phenomenon in which lines are generated in the coating layer are generated, thereby lowering antistatic performance or process yield.
The present invention does not cause a decrease in coating property due to elution of the added plasticizer for improving the processability of the base film and defects in the appearance of the coating layer such as drop coating or coating sponge, and can maintain antistatic property, reliability durability and transparency. An object of the present invention is to provide an antistatic coating liquid composition.
In addition, another object of the present invention is to provide an antistatic optical film coated with the antistatic coating liquid composition.
In addition, another object of the present invention is to provide an antistatic adhesive polarizing plate coated with the antistatic coating liquid composition.
In addition, another object of the present invention is to provide a liquid crystal display device having the antistatic adhesive polarizing plate.
The present invention provides an antistatic coating liquid composition comprising an antistatic agent, a water-soluble or water dispersible binder resin containing a hydrophilic unit, and a polyether modified polysiloxane compound.
In addition, the present invention provides an antistatic optical film coated with the antistatic coating liquid composition on at least one side of the transparent base film.
In addition, the present invention provides an antistatic coating layer coated with the antistatic coating liquid composition on at least one side of the polarizing plate, and an antistatic adhesive polarizing plate in which an adhesive layer is laminated on the antistatic coating layer.
The present invention also provides a liquid crystal display device in which an adhesive layer of the antistatic adhesive polarizing plate is bonded to at least one surface of a liquid crystal cell.
The antistatic coating liquid composition according to the present invention has excellent self-mixing stability and greatly decreases the surface tension, thereby improving the coating property, and reducing the coating property due to the elution of the plasticizer added to improve the processability of the conventional base film when applied to the base film. Improved process yield can be improved to prevent appearance defects such as drop coating or coatings, and at the same time, it can prevent static electricity generated during the bonding process of liquid crystal cell and optical film due to its excellent antistatic property. And the liquid crystal alignment failure can be solved quickly and effectively by the static electricity generated already. In addition, there is no problem of missing or remaining adhesive due to the lamination of the formed coating layer and the pressure-sensitive adhesive layer, and excellent reliability and durability and transparency are expected when applied to the optical film and the polarizing plate.
The present invention relates to an improved antistatic coating liquid composition and an optical film using the same to improve the coating property to solve the problem of appearance defects generated in the coating layer, and to maintain the antistatic property, reliability durability and transparency.
Hereinafter, the present invention will be described in more detail.
The antistatic coating liquid composition of the present invention is characterized in that it comprises an antistatic agent, a water-soluble or water dispersible binder resin containing a hydrophilic unit, and a polyether modified polysiloxane compound.
The antistatic agent included in the present invention is not particularly limited as long as it is a water-soluble or water dispersible material exhibiting antistatic performance. Such water-soluble or water-dispersible antistatic agents include conductive polymers such as poly 3,4-ethylenedioxythiophene / polystyrene sulfonic acid (PEDOT / PSS), polyethylenedioxythiophene, polythiophene, polyaniline, polypyrrole; Alkali metal salts; Metal oxides such as ATO, ITO, and SbO 2 ; Cationic surfactants such as quaternary ammonium salts; Ionic liquids; And carbon nanotubes (CNTs), and the like, and preferably selected from a conductive polymer, a metal oxide, an alkali metal salt, and a carbon nanotube.
The antistatic agent is preferably 70 to 95% by weight in 100% by weight of the total content (based on solids) of the antistatic agent and the binder resin. If the content is less than 70% by weight it is difficult to maintain a constant conductivity, when the content exceeds 95% by weight there is a problem that the coating performance and transparency for the base film is lowered.
The present invention uses a water-soluble or water-dispersible binder resin containing a hydrophilic unit as the binder resin contained in the antistatic coating solution composition, the binder resin improves the adhesion between the optical film and the antistatic layer, as well as the adhesive layer. At the same time plays a role of improving the antistatic performance by improving the conductivity. In addition, the antistatic layer coated on the base film is prevented from being deformed by a solvent or external friction, and the antistatic agent is well adhered to the base film. As such a water-soluble or water-dispersible binder resin, any polymer known in common may be used as long as its solubility in water is 0.1% by weight or more.
The binder resin is specifically a homopolymer or copolymer containing a hydrophilic unit, for example, polyvinyl alcohol (containing partially saponified), polyacrylic acid, polymethacrylic acid, poly (2-hydroxyethyl acrylate), poly (2-hydroxyethyl methacrylate), poly (4-hydroxybutyl acrylate), poly (4-hydroxybutyl methacrylate), poly (glycosyloxyethyl acrylate), poly (glycosyloxyethyl Methacrylate), polyvinyl methyl ether, polyvinylpyrrolidone, polyethylene glycol, polyvinyl acetal (containing partial acetal), polyethyleneimine, polyethylene oxide, styrene-maleic anhydride copolymer, polyvinylamine, oxazoline group Containing water-soluble resin, polyurethane resin, polyester resin, acrylic resin, alkyd resin, polyether resin, melamine resin, cellulose resin or the like It can be used that was distributed, and these may be used in combination or copolymerized alone or in combination of two or more at a predetermined ratio. Among them, those selected from polyvinyl alcohol (containing partially saponified), polyurethane resins, polyester resins and acrylic resins are preferable.
The content of the binder resin is preferably 5 to 30% by weight in 100% by weight of the total content (based on solids) of the antistatic agent and the binder resin. If the content is less than 5% by weight, it is difficult to secure the desired coating performance when applied to the base film, if the content exceeds 30% by weight the binder resin content is increased compared to the antistatic agent may reduce the antistatic performance. .
The present invention is characterized in that the polyether-modified polysiloxane compound is used as the silicone compound included in the antistatic coating solution composition. The polyether-modified polysiloxane compound increases the dispersibility of the components included in the coating solution to improve the surface tension of the coating solution. It significantly lowers and serves to improve the coating properties. For this reason, when a plasticizer added to improve processability in manufacturing a conventional base film is eluted, and a coating solution is applied on the base film, the coating layer is not formed and the applied coating agent is agglomerated again (drop coating) and the coating layer. It is possible to prevent appearance defects such as the occurrence of lines.
Polyether-modified polysiloxane compounds are prepared by introducing polyether chains into polysiloxanes to synthesize them, and specifically, the polyether chains may be introduced by reacting polysiloxanes and polyethers in a solvent. Examples of the polysiloxane compound include polydimethylsiloxane, polymethylphenylsiloxane, polymethylethylsiloxane, polydiethylsiloxane, polyethylphenylsiloxane, and the like, and polyethers include polyethylene oxide and polypropylene oxide. In addition, commercially available compounds may be used, and the trade names BYK-300, BYK-301, BYK-302, BYK-306, BYK-307, BYK-330, BYK-331, BYK-332 , BYK-333, BYK-335, BYK-337, BYK-341, BYK-344, BYK-345, BYK-346, BYK-348, BYK-377, product name of Japan Konica Corporation SILWETL-7604, SILWETL-7607N, SILWETL -2104, SILWETL-2161, KF-351A, KF-352A, KF-353, KF-354L, KF-355A, KF-615A, KF-945, KF-640, KF-642, KF-643 from Shin-Etsu Chemical Co., Ltd. , KF-6020, X-22-6191, X-22-4515, KF-6011, KF-6012, KF-6015, and KF-6017. Among them, a product having excellent mixing stability between the antistatic agent and the binder resin is preferable, and BYK-348, most preferably commercially available as polyethylene-modified polydimethylsiloxane, is preferable.
The content of the polyether modified polysiloxane compound may be 0.01 to 11.00 parts by weight, preferably 0.50 to 11.00 parts by weight, and more preferably 1.00 to 10.00 parts by weight, based on 100 parts by weight of the total content of the antistatic agent and the binder resin (based on the solid content). It is good that it is a weight part. If the content is less than 0.01 parts by weight does not affect the surface tension still occurs a problem of coating properties, if the content exceeds 11.00 parts by weight of silicon is eluted to the surface of the coating layer may reduce the adhesion between the layers.
The antistatic coating liquid composition comprising the above components may be prepared by mixing an antistatic agent and a water-soluble or water dispersible binder resin, and adding a polyether-modified polysiloxane compound thereto, or dispersing them in a hydrophilic solvent. have. As the hydrophilic solvent, water alone or a mixture of water and a hydrophilic organic solvent can be used. As the hydrophilic organic solvent, alcohols having 1 to 6 carbon atoms may be used. For example, methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, sec-butanol, tert-butanol, n-amyl alcohol, Isoamyl alcohol, sec-amyl alcohol, tert-amyl alcohol, 1-ethyl-1-propanol, 2-methyl-1-butanol, n-hexanol, cyclohexanol and the like can be used.
It is preferable that such an antistatic coating liquid composition has a surface tension of 50 dyne / cm or less, More preferably, it is 20-40 dyne / cm. If the surface tension exceeds 50 dyne / cm, the coating performance is insufficient and the coating layer is not well formed, and the appearance problems such as a phenomenon that the coated liquid is agglomerated again (drop coating) and lines are generated in the coating layer May occur.
The antistatic coating liquid composition thus prepared may be coated on a base film with a predetermined thickness to form a film of the antistatic layer.
The antistatic optical film of the present invention is characterized in that the antistatic coating liquid composition is coated on at least one side of the transparent base film. Here, the term 'optical film' refers to an optical film or an optical laminate that can be applied to various image display devices such as a polarizer, a polarizer protective film, or a retardation film for improving the viewing angle, and the application thereof is not particularly limited.
The transparent substrate film is used as a substrate for laminating a coating layer, a polycarbonate film; Polyester-based films such as polyethylene terephthalate; Polyether sulfone-based film; Or polyolefin films such as polyethylene, polypropylene, cyclo or norbornene structures, polyolefin films such as ethylene propylene copolymers, and the like.
The antistatic coating liquid composition according to the present invention can effectively remove the static electricity generated when bonding the polarizing plate to the liquid crystal cell by forming a coating layer on one side of the polarizing plate, which is an essential component of the liquid crystal display device.
The antistatic adhesive polarizing plate of the present invention is characterized in that an adhesive layer is laminated on the antistatic coating layer and the antistatic coating layer coated with the antistatic coating liquid composition on one surface of the polarizing plate.
The antistatic adhesive type polarizing plate includes a polarizer, and a polarizer protective film, an antistatic coating layer and an adhesive layer, and a release film are sequentially stacked on one side of the polarizer, and a polarizer protective film is provided on the other side of the polarizer. It is a multilayered structure.
As a polarizer, the thing by which the dichroic dye was adsorption-oriented to the film which consists of polyvinyl alcohol-type resin can be used. As a polyvinyl alcohol-type resin which comprises the said polarizer, the copolymer etc. of polyvinyl acetate which is a homopolymer of vinyl acetate, a vinyl acetate, and the other monomer copolymerizable with this can be used. Here, as other monomers copolymerizable with vinyl acetate, unsaturated carboxylic acids, unsaturated sulfonic acids, olefins, vinyl ethers and acrylamides having an ammonium group can be used. The thickness of the polarizer is not particularly limited and may be prepared in the conventional thickness used in the art.
The polarizer protective film is preferably excellent in transparency, mechanical strength, thermal stability, moisture shielding, isotropy, etc., for example, polyester-based films such as polyethylene terephthalate, polyethylene isophthalate, polybutylene terephthalate; Cellulose films such as diacetyl cellulose and triacetyl cellulose; Polycarbonate film; Acrylic films such as polymethyl (meth) acrylate and polyethyl (meth) acrylate; Styrene films such as polystyrene and acrylonitrile-styrene copolymers; Polyolefin-based films such as polyethylene, polypropylene, cyclo- or polyolefin-based films having a norbornene structure, and ethylene propylene copolymers; Polyimide film; Polyether sulfone-based film; A sulfone film etc. can be used, The thickness of these is also not specifically limited. On the other hand, cellulose-based polymers such as triacetyl cellulose are preferred in view of polarization characteristics and durability. Especially triacetyl cellulose film is the most preferable.
The release film is a film for protecting the pressure-sensitive adhesive layer, the type is not particularly limited as long as it is a film commonly used in the art. Specific examples include polyethylene, polypropylene, poly-1-butene, poly-4-methyl-1-pentene, ethylene-propylene copolymer, ethylene-1-butene copolymer, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate Polyolefin films such as copolymers and ethylene-vinyl alcohol copolymers; Polyester-based films such as polyethylene terephthalate, polyethylene naphthalate and polybutylene terephthalate; Polyamide films such as polyacrylate, polystyrene, nylon 6 and partially aromatic polyamide; Polyvinyl chloride film; Polyvinylidene chloride film; Or polycarbonate films. These can also be used by appropriately releasing a silicone, fluorine, silica powder or the like.
The method for forming the antistatic coating layer is not particularly limited as long as it is commonly used in the art. For example, the antistatic coating liquid composition may be flow casted on an optical film or a polarizer protective film of a polarizing plate, and air knife, gravure, reverse roll, kiss roll, spray Using a coating method such as (spray) or blade (blade) can be applied directly in a suitable development method, dried and laminated.
It is preferable that the thickness of an antistatic coating layer is 20-300 nm. If the thickness is less than 20nm, the antistatic performance may be insignificant, and if it exceeds 300nm, the transparency may be reduced.
Also in the method of laminating an adhesive layer on a polarizing plate, if it is a method normally used in the art, it will not specifically limit. For example, the pressure-sensitive adhesive composition on the antistatic coating layer formed on the polarizer protective film can be applied and dried by laminating using the same method as in the coating method of the antistatic coating liquid composition. In addition, after forming the pressure-sensitive adhesive layer by forming the pressure-sensitive adhesive layer on the silicone-coated release film by the same coating method as described above, it may be laminated on the antistatic coating layer formed on the polarizer protective film using a roll pressing device. At this time, when an ultraviolet curable compound is contained as a crosslinking agent in an adhesive composition, it is preferable to irradiate an ultraviolet-ray after apply | coating an adhesive composition or laminating | stacking using a roll press apparatus.
The thickness of the pressure-sensitive adhesive layer can be adjusted according to the adhesive force, it is usually preferably 3 to 100㎛, more preferably 10 to 100㎛.
The liquid crystal display of the present invention is characterized in that the antistatic adhesive polarizing plate is provided, and specifically includes a liquid crystal panel in which an adhesive layer of the antistatic adhesive polarizing plate is bonded to at least one side of the liquid crystal cell.
In addition, the antistatic adhesive polarizing plate may be applied to all kinds of image display devices as well as ordinary liquid crystal display devices.
Hereinafter, preferred examples are provided to aid the understanding of the present invention, but the following examples are merely for exemplifying the present invention, and various changes and modifications within the scope and spirit of the present invention are apparent to those skilled in the art. Naturally, such modifications and variations fall within the scope of the appended claims.
[Example]
Preparation Example: Adhesive Composition
A neck stirrer, a thermometer, a reflux condenser, a dropping lot, and a nitrogen gas introduction tube were installed in a 4-neck jacketed reactor (1L), and nitrogen gas was introduced into the reactor to be replaced with 164 parts by weight of ethyl acetate, n 126 parts by weight of butyl acrylate, 0.5 part by weight of acrylic acid, and 1.3 parts by weight of 2-hydroxyethyl acrylate were added, and the reactor was heated to 50 ° C. Subsequently, a solution in which 0.14 parts by weight of 2,2'-azobisisobutyronitrile (AIBN) was completely dissolved was added dropwise to 10 parts by weight of ethyl acetate. After the reaction was continued for an additional 5 hours while maintaining the jacket outside temperature at 50 ℃ 90 parts by weight of ethyl acetate was slowly added dropwise using a dropping lot for 1 hour. Further, after additional stirring for 6 hours at the same temperature, 304 parts by weight of ethyl acetate was added, and stirred for 2 hours to prepare an acrylic copolymer. The prepared acrylic copolymer had a solid content of 20% by weight and a weight average molecular weight (in terms of polystyrene) by GPC method was about 1,500,000.
100 parts by weight of the prepared acrylic copolymer resin (based on solids content) and 0.8 parts by weight of trimethylolpropane-modified tolylene diisocyanate (Coronate L, Nippon Polyurethane Industry Co., Ltd.) as a crosslinking agent were mixed, and 50 parts by weight of ethyl acetate was added at an appropriate concentration. Dilution prepared an adhesive composition.
Example 1
(1) antistatic coating liquid composition
100 parts by weight of a polyethylenedioxythiophene dispersion (Conisol-H4, Inscon) and 30 parts by weight of a polyvinyl alcohol binder resin were mixed (solid content ratio of 80% by weight: 20% by weight). An antistatic coating solution composition was prepared by adding 3.00 parts by weight of polyethylene-modified polydimethylsiloxane (BYK-348, BYK) based on 100 parts by weight of the mixture (based on the solid content).
(2) Manufacture of antistatic adhesive polarizing plate
Conventional polarizers in which triacetylcellulose-based (TAC) polarizer protective films were laminated on both sides of the PVA polarizer were used. The antistatic coating liquid composition prepared in (1) was applied on a polarizer protective film (30 cm × 20 cm) using a bar-coater (# 3) so as to have a dry film thickness of 0.1 μm. Drying for 1 minute at to form an antistatic coating layer.
The pressure-sensitive adhesive composition prepared in Preparation Example was applied on the antistatic coating layer formed in the same manner to have a dry film thickness of 25 μm, and dried at 100 ° C. for 1 minute to form a pressure-sensitive adhesive layer, wherein the polyethylene terephthalate coated with silicone ( PET) release film was attached to prepare an antistatic adhesive polarizing plate.
Example 2
In the same manner as in Example 1, (1) 0.5 parts by weight of polyethylene modified polydimethylsiloxane (BYK-348, BYK) was used in the preparation of the antistatic coating solution.
Example 3
In the same manner as in Example 1, (1) 5.00 parts by weight of polyethylene-modified polydimethylsiloxane (BYK-348, BYK) was used in the preparation of the antistatic coating solution.
Example 4
In the same manner as in Example 1, (1) 10.00 parts by weight of polyethylene-modified polydimethylsiloxane (BYK-348, BYK) was used in the preparation of the antistatic coating solution.
Example 5
In the same manner as in Example 1, (1) 150 parts by weight of lithium iodide (Lithium Iodide, ALDRICH) was used as an antistatic agent and 100 parts by weight of polyvinyl alcohol binder resin was used as an antistatic agent.
Example 6
In the same manner as in Example 1, (1) 100 parts by weight of carbon nanotubes (CNT) was used as an antistatic agent in the preparation of the antistatic coating solution.
Example 7
In the same manner as in Example 1, (1) 100 parts by weight of antimony tin oxide (ATO) metal oxide was used as an antistatic agent in the preparation of the antistatic coating solution.
Comparative Example 1
In the same manner as in Example 1, (1) instead of polyethylene-modified polydimethylsiloxane (BYK-348, BYK company) in the preparation of an antistatic coating solution of other organic modified polydimethyl siloxane (BYK-3520, BYK company) 3.00 weight Used wealth
Comparative Example 2
In the same manner as in Example 1, (1) instead of polyethylene-modified polydimethylsiloxane (BYK-348, BYK) in the preparation of the antistatic coating liquid aralkyl-modified polyalkylmethylsiloxane (BYK-322, BYK) 3.00 Parts by weight were used.
Comparative Example 3
In the same manner as in Example 1, (1) instead of polyethylene-modified polydimethylsiloxane (BYK-348, BYK) in the preparation of the antistatic coating solution of other organic modified polydimethylsiloxane (BYK-3520, BYK) 3.00 weight As the part and the antistatic agent, 150 parts by weight of lithium iodide (Lithium Iodide, ALDRICH) was used, and 100 parts by weight of polyvinyl alcohol binder resin was used.
Comparative Example 4
In the same manner as in Example 1, (1) instead of polyethylene-modified polydimethylsiloxane (BYK-348, BYK) in the preparation of the antistatic coating solution of other organic modified polydimethylsiloxane (BYK-3520, BYK) 3.00 weight 100 parts by weight of carbon nanotubes (CNT) were used as the part and the antistatic agent.
The components of the antistatic coating solution compositions prepared in Examples 1 to 7 and Comparative Examples 1 to 4 and their compositions are shown in Table 1 below.
(Parts by weight)
Test Example
The physical properties of the antistatic coating liquid composition and the antistatic adhesive polarizing plate prepared in Examples 1 to 7 and Comparative Examples 1 to 4 were measured by the following methods, and the results are shown in Table 2 below.
(1) Mixing stability of antistatic coating solution
The prepared antistatic coating solution composition was visually observed and evaluated based on the following criteria.
(Circle): There is no floating thing in the liquid level of coating liquid, and it mixes uniformly.
X: There is a float on the liquid level of the coating liquid.
(2) Surface tension of antistatic coating solution (dyne / cm)
-Measuring instrument: Surface tension measuring instrument (K100SF / KRUSS)
Measurement method: After measuring 50 mL of the prepared antistatic coating solution, the surface tension was measured three times and expressed as the average value.
(3) Coating property of antistatic coating liquid
The antistatic coating solution thus prepared was applied on a TAC (30 cm × 20 cm), which is a polarizer protective film of a polarizing plate, using a bar-coater (# 3) so as to have a dry film thickness of 0.1 μm. Drying for 1 minute to form an antistatic coating layer. The appearance defects of the formed antistatic coating layer were visually observed and evaluated based on the following criteria.
(Circle): There is no drop uncoating, coating sponge, or a stain phenomenon in an antistatic layer.
(Triangle | delta): A little uncoating, a coating slip, or a stain phenomenon generate | occur | produced in an antistatic layer.
X: A drop uncoating, coating sponge, or a stain phenomenon generate | occur | produced in an antistatic layer.
(4) Surface resistivity (Ω / □)
-Measuring instrument: surface resistance measuring instrument (MCP-HT450 / MITSUBISHI CHEMICAL)
Probe (URS, UR100), Probe Checker (for URS, UR 100)
-Measuring method: After peeling off the release film of the produced antistatic adhesive polarizing plate, three points on the surface were measured 10 times, respectively, and the average value was shown.
(5) trust durability
The antistatic adhesive polarizing plate thus prepared was cut to a size of 25 cm × 20 cm, and then bonded to Corning # 1737 glass to prepare a specimen. The prepared specimens were treated in an autoclave for 5 minutes at 50 ° C. for 20 minutes and then left in an oven at 60 ° C. for 90% relative humidity for 300 hours. Peeling phenomenon such as lifting and peeling of the specimen left undisturbed, and whether bubbles were generated were visually confirmed and evaluated based on the following criteria.
(Circle): There is no peeling phenomenon and bubble generation (good).
(Triangle | delta): Peeling phenomenon and generation | occurrence | production of a bubble exist somewhat (usually).
X: There exists peeling phenomenon and foaming (defect).
(dyne / cm)
(Ω / □)
As shown in Table 2, the antistatic coating solution of Examples 1 to 7 containing a polyethylene-modified polydimethylsiloxane compound according to the present invention has excellent mixing stability of its own and the surface tension is markedly lowered, thereby forming a coating layer. It did not generate a poor appearance, it was confirmed that the excellent reliability and antistatic properties.
On the other hand, Comparative Examples 1, 3, and 4 using organic modified polydimethylsiloxanes other than ether-modified such as polyethylene had poor mixing stability, and thus, coatings were impossible due to precipitation of suspended solids on the liquid surface of the coating solution. Comparative Example 2 with the addition of siloxane had good mixing stability, but the surface tension control effect was insignificant, resulting in poor appearance when the coating layer was formed.
As described above, the present invention is expected to be effective when applied to an optical film, a polarizing plate, and various image display devices that can form an antistatic coating layer without appearance defects and thus require antistatic property, reliability durability, and transparency. .
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020090065023A KR20110007477A (en) | 2009-07-16 | 2009-07-16 | Anti-static coating agent composition and optical film using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020090065023A KR20110007477A (en) | 2009-07-16 | 2009-07-16 | Anti-static coating agent composition and optical film using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20110007477A true KR20110007477A (en) | 2011-01-24 |
Family
ID=43613919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020090065023A KR20110007477A (en) | 2009-07-16 | 2009-07-16 | Anti-static coating agent composition and optical film using the same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20110007477A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102030339B1 (en) * | 2018-10-22 | 2019-10-10 | 한국화학연구원 | Antistatic transparent protection film and preparation method thereof |
| KR20210115256A (en) * | 2020-03-12 | 2021-09-27 | 도레이첨단소재 주식회사 | Release film for carrier and manufacturing method thereof |
-
2009
- 2009-07-16 KR KR1020090065023A patent/KR20110007477A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102030339B1 (en) * | 2018-10-22 | 2019-10-10 | 한국화학연구원 | Antistatic transparent protection film and preparation method thereof |
| KR20210115256A (en) * | 2020-03-12 | 2021-09-27 | 도레이첨단소재 주식회사 | Release film for carrier and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20110031569A (en) | Anti-static coating agent composition and optical film using the same | |
| JP5599461B2 (en) | Transparent conductive article containing cellulose SL | |
| KR101576101B1 (en) | Anti-static adhesive composition polarizing plate and surface protective film using the composition | |
| US20110133134A1 (en) | Crosslinkable and Crosslinked Compositions of Olefin Polymers and Graphene Sheets | |
| TWI634015B (en) | Antistatic surface protective film peeling film,antistatic surface protective film and optical component attached with the film | |
| JP2013196918A (en) | Coating film forming composition used for forming transparent conductive film | |
| JP7489513B2 (en) | Antistatic Surface Protection Film | |
| JP2013125684A (en) | Coating film-forming composition to be used for forming transparent conductive film | |
| KR20170112792A (en) | Touch screen panel and coating composition for forming an electrode protection layer of touch screen panel | |
| KR20150045381A (en) | Transparent conductor and optical display apparatus comprising the same | |
| KR101509442B1 (en) | Anti- static and anti-light leakage adhesive composition and polarizing plate using the composition | |
| KR101455302B1 (en) | Adhesive composition and polarizing plate using the same | |
| KR20110007477A (en) | Anti-static coating agent composition and optical film using the same | |
| KR20100018260A (en) | Anti-static adhesive composition and polarizing plate using the same | |
| JP4983209B2 (en) | Composite retardation plate, manufacturing method thereof, composite optical member, and liquid crystal display device | |
| KR20080068442A (en) | Acrylic pressure sensitive adhesive compositions | |
| KR20090120703A (en) | Anti-static adhesive composition for polarizing plate, polarizing plate and surface protective film using the composition | |
| KR20110007476A (en) | Anti-static coating agent composition and optical film using the same | |
| KR20170065885A (en) | Antistatic and adhesive composition and polarizing plate using the composition | |
| KR20110052339A (en) | Anti-static coating agent composition and optical film using the same | |
| KR101612350B1 (en) | Anti-static adhesive composition, polarizing plate and surface protective film using the composition | |
| KR101508237B1 (en) | Adhesive composition, polarizing plate and surface protective film using the composition | |
| KR20100018765A (en) | Anti-static coating agent composition and optical film using the same | |
| KR20110016212A (en) | Anti-static coating agent composition and optical film using the same | |
| KR20130000803A (en) | Conducting ink composition for printing and manufacturing method of the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WITN | Withdrawal due to no request for examination |