TW201043671A - Anti-static polyester film containing acetylene diol surfactant and manufacturing method thereof - Google Patents

Abstract

The present invention provides an antistatic coating composition for reducing coating defects, the composition comprising: 100 parts by weight of a conductive polymer resin; 100-1, 000 parts by weight of a water-dispersible polyurethane resin consisting of an anionic polyether polyurethane dispersion containing at least one functional group selected from the group consisting of hydroxyl, amine, alkyl and carboxyl groups; 100-1, 000 parts by weight of any one crosslinker resin selected from the group consisting of isocynate, carbonylimide, oxazoline and melamine compounds; and 10-100 parts by weight of a fluororesin; the composition further containing, based on 100 parts by weight of the above total component resin, 0.001-1 part by weight of an acetylenediol surfactant. Furthermore, the invention provides an antistatic polyester film which is manufactured by applying the antistatic coating composition to one or both sides of a polyester film by an in-line coating process. The antistatic polyester film is excellent in tape peel strength, antifouling performance and solvent resistance, and the physical properties thereof are not substantially deteriorated due to the properties of the surfactant.

Description

201043671 VI. Description of the Invention: [Technical Field] The present invention relates to an antistatic coating composition, an antistatic polyester film using the antistatic coating composition, and a method for producing the same. More particularly, the present invention relates to an antistatic coating composition for reducing coating defects, the composition comprising: a conductive polymer resin which imparts excellent antistatic properties, and a polyamine phthalate resin, Improved tape peel strength; suitable cross-linking resin which improves solvent resistance and coating efficiency by controlling crosslink density; fluororesin, which improves antifouling performance; and additionally, acetylene glycol A surfactant that minimizes coating defects while making the coating properties of the composition easy to control. The present invention further relates to an antistatic polyester film using the antistatic coating composition and a method for producing the same. [Prior Art] In general, polymer films are widely used for photography, system, and top printing because of their excellent elasticity and flexibility, and excellent mechanical properties, heat resistance, transparency, and chemical resistance. 〇verheadpnnt, _), power/electronic parts, general X industry materials and packaging materials used in all areas of the industry. 2 and 'f have such excellent properties f, but because the polymer film has a specific resistance of the door', it will have a crucible surface that is easy to electrify when rubbed: when the polymer film is electrified' There are problems such as a product other than dust = a product attached to the surface of the film by an electrostatic point and being electrically shock-coated, thus causing a product failure. In addition, when a discharge occurs in a film using a chemical substance such as an organic solvent, or when a discharge occurs in a processing process, it may ignite. Known technical methods for suppressing the generation of static electricity in a polymer film include a metal deposition method of depositing a metal compound on the surface of the film by adding an organic sulfonate or an organophosphate compound during the production of the film; A method of coating a surface of the film with conductive inorganic particles; a method of applying an anionic or cationic monomer or polymer to the surface of the film; and the like. Among these methods, the internal addition method exhibits excellent stability against aging, but has the following problems: inherently excellent properties of the polymer film and deterioration of the antistatic effect. Metal deposition methods and methods of coating conductive metal particles have recently received attention due to excellent antistatic effects', but the production cost is extremely high, and thus is only used in specific applications requiring high antistatic f biomass. On the other hand, a method of coating an anionic or cationic monomer compound has been applied in a wide range of applications and has been studied and developed in various ways because it has a relatively excellent antistatic effect and is advantageous in terms of production cost. In the example of the technique Q for the method of coating an anionic or cationic monomer compound, Korean Patent Publication No. 2003-0022713 discloses a technique relating to an antistatic polylactic acid film which contains polycondensed diaryl dimethyl hydrazine. That is, the polymerization of the fourth grade is used as an antistatic agent. Further, U.S. Patent No. 5,925,447 discloses a technique in which a dilute acid vinegar polymer having a quaternary hydroxyl group attached to its propylamine end is used as a surfactant. In addition, Korean Patent Publication No. 2002 No. 877 discloses an antireflection film comprising a low reflection layer: by coating a ruthenium compound containing a cation-modified ruthenium compound (including quaternary ammonium chloride) It is formed by coating the base film and curing the coated compound. σ 5 201043671 Recently, the demand for antistatic films using products of various antistatic agents described above has rapidly increased with the growth of the display industry. The most commonly used antistatic agent in antistatic applications is a cationic antistatic agent' and the film comprising a conductive polymer is a high quality film and is now available. In short, in the field of antistatic polyester film, it is required to satisfy excellent antistatic effect and at the same time have antifouling performance, but it is difficult to achieve both of these properties by the in-line coating process. Further, if the peel strength between the antistatic surface and the protective film is low, the protective film will not be released or adversely affect the product containing the antistatic surface during the release process. For this reason, a product having a high tape peel strength is required. However, in the prior art in-line coating process, coating properties such as flatness and wettability are insufficient due to the high surface tension of the surface of the film coating, and coating defects caused by the insufficient properties are productivity and yield reduction. The main reason. If the content of the surfactant is increased to solve the above problem, the coating properties will deteriorate, and it is extremely difficult to find an optimum coating composition for this purpose. Accordingly, the inventors have endeavored to solve the problems in the prior art described above, and thus manufactured an antistatic polylactic acid film by an in-line coating process, wherein the antistatic poly (IV) controls the viscosity and surface tension of the coating composition solution. The improved coating property f, and the coating properties of the film, such as antistatic performance, antifouling performance and peel strength 1, are easily controlled, thereby completing the present invention. SUMMARY OF THE INVENTION The object of the present invention is to provide an antistatic 201043671 coating composition for reducing coating defects, which additionally contains ancient 7 >

One has an acetylene glycol surfactant to provide an antistatic polyester film with easy control of layer properties. Another purpose of this month is to provide an antistatic polyacetal medium which is manufactured by coating an antistatic coating composition by an in-line coating process and has excellent transparency and antistatic properties, and at the same time, tape peeling strength and antifouling. Excellent performance and coating properties The physical properties of which are easily controlled to allow the film to quickly cope with market changes; and a method of making an antistatic polyester film.

In order to achieve the above object, the present invention provides an antistatic coating composition for reducing coating defects: satisfying optimum physical properties. The composition comprises a triple-peeled conductive polymer resin; to 1, 〇〇〇 by weight a water-dispersible polyurethane resin consisting of an anionic polyether polyurethane dispersion containing at least one functional group selected from the group consisting of a hydroxyl group, an amine group, an alkyl group, and a carboxyl group; 100 to U00 weight a crosslinked resin obtained by polymerizing a monomer selected from the group consisting of isocyanate, carbonyl ruthenium, oxazoline and melamine; 10 纟 100 parts by weight of a fluororesin; and additionally, 1 〇〇 The conductive polymer resin, the polyurethane resin, the crosslinked resin, and the fluororesin are 5% by weight to the weight percent of the block-alcohol surfactant. The acetylene glycol surfactant used for reducing coating defects in the antistatic coating composition of the present invention is a compound represented by the following formula 1: [Formula 1] 7 201043671

Its center and R4 are independently selected from c3_cl〇 straight or branched alkyl and i alkyl, vinyl, allyl, ethynyl, phenyl, aryl, dentate = C3-C10 alkoxy, cyanide a substituent of a group consisting of a group, an amine group, a hydroxyl group, a carbonyl group, an ester group, and a carboxyl group; R2 and Han 3 are independently a C1_C5 alkyl group; and m, η, p, and q are independently an integer ranging from 〇 to 20. By adding an acetylene glycol surfactant to the antistatic coating composition of the present invention, the coating properties of the composition can be improved without deteriorating its physical properties. Herein, the conductive polymer resin, the polyurethane resin, the crosslinking agent resin, and the fluororesin are added in an amount of from 1 part by weight to 1 part by weight of the acetylene glycol. Surfactant. The water-dispersible polyurethane resin which can be used in the antistatic coating composition to reduce coating defects is selected from the group consisting of ethyl propylamine, ethyleneamine, ethyleneamine, vinylpyridine, and diethylaminomethacrylate. An anionic polyether polyurethane dispersion of a repeating functional unit of a group consisting of ethyl ester's vaporized diallyldimethylammonium, methacryloyloxyethyltrimethylsulfate sulfate, and combinations thereof. Alternatively, it is an anionic polyether polyurethane dispersion containing a repeating functional group selected from the group consisting of methyl, ethyl, propyl, butyl, pentyl, hexyl and combinations thereof. The conductive polymer resin used in the antistatic coating composition of the present invention 201043671 is an aqueous dispersion containing a polyanion and polythiophene; or an aqueous dispersion containing a polyanionic derivative and a polythiophene derivative. The aqueous dispersion contains from 1 to 5 wt% of polyanion. Further, the fluororesin used in the antistatic coating composition of the present invention is selected from the group consisting of polytetrafluoroethylene, polytrifluoroethylene, hexafluoropropylene ethylene copolymer, polychlorotrifluoroethylene, and tetrafluoroethylene copolymer. A group of materials, tetrafluoroethylene copolymer, polyvinyl fluoride and polyvinylidene fluoride. The antistatic coating composition of the present invention has a solid content of from 0.5% by weight to 丨〇% wt%. The present invention also provides an antistatic polyester film comprising an antistatic layer formed by applying an antistatic coating composition to one or both sides of a film.

The antistatic polyester film of the invention has greater than! , NITTO #31B tape peel strength and 3M #244 tape peel strength greater than 1 gram / 18 mm, and has a surface resistivity of less than 1011 Ω / sq, ◎ indicates that the polyester film has Antistatic properties. The antistatic polyester film having a water contact angle of greater than 9 Å indicates that it has excellent antifouling performance. Therefore, the antistatic polyester film of the present invention is suitably used in an optical display device selected from the group consisting of a liquid display, a plasma display, a personal digital assistant, and a navigation system. Further, the present invention provides a method for producing an antistatic polyester film by an in-line coating process, the method comprising the steps of: uniaxially stretching a polyester film; applying the antistatic coating composition of the present invention to the warp sheet One or both sides of the axially stretched polyester film are formed to form an antistatic layer; and the t film on which the electric layer of antistatic 9 201043671 is formed is further stretched to obtain a biaxially stretched polyester film. Accordingly, the present invention can provide an antistatic polyester film which is produced by an in-line coating process and which has improved coating properties by controlling the viscosity of the coating composition solution and surface tension, and such as antistatic The effect of the coating on the efficacy and peel strength is easy to control. As described above, the antistatic coating composition of the present invention contains: a conductive agglomerate, which imparts excellent antistatic performance to a polyurethane resin, and the modified adhesive is a crosslinking agent from the strength. It improves solvent resistance and coating properties by controlling crosslink density; fluororesin, which improves antifouling performance; and block diol surfactant, which minimizes coating defects while allowing physical properties of the coating composition Further, the present invention can provide an antistatic polylactic acid film which is manufactured by coating the antistatic coating composition to the surface or both sides of the film, and has excellent transparency and antistatic properties. 'At the same time, the tape peeling strength, the antifouling performance and the layer properties are excellent, and the physical properties thereof are easily controlled so that the film can quickly cope with market changes. [Embodiment] Hereinafter, the present invention will be described in further detail. An antistatic coating composition for reducing the coating defects by using a small + a & a composition comprising: 100 parts by weight of a conductive polymer resin; 100 to 1,0 〇〇 詈 · 夕 ^ , , ^ An aqueous/knife-dispersible polyurethane resin comprising at least one anionic polyether polyurethane dispersion selected from the group consisting of functional groups of 10, 2010, 671, which are composed of a group of amino groups, alkyl groups and carboxyl groups; Composition: 100 to 1, 〇〇〇 by weight of a crosslinked resin obtained by polymerizing a monomer selected from the group consisting of isocyanate, carbonyl ruthenium, oxazoline and melamine; ίο to 1 〇〇 by weight a fluororesin; and additionally, 100 parts by weight of the conductive polymer resin, the polyurethane resin, the crosslinked resin and the fluororesin, 〇〇〇1 to 丨 by weight of the bisphenol Surfactant. The components of the antistatic coating composition of the present invention for reducing coating defects will now be described in detail. The conductive polymer resin contained in the antistatic coating composition of the present invention for reducing coating defects is used. To give excellent antistatic performance. Preferably, the conductive polymer resin is an aqueous dispersion containing polyanion and polythiophene, or an aqueous dispersion containing a polyanionic derivative and a polythiophene derivative. Is an acidic polymer which is a polymeric carboxylic acid, a polymeric acid or a poly-acid. Examples of the polymeric money include polyacrylic acid, polymethyl methic acid, poly-succinic acid, and the like, and Examples of the polymeric acid include polystyrenesulfonic acid and the like. In terms of imparting conductivity, the polyanion of the conductive polymer tree is preferably present in excess relative to the poly(tetra) or polycut derivative. And the amount of the polyanion used when the amount of the polyporphin or poly(tetra) derivative used is iwt% is preferably 5 wt%, and more preferably i(4) to 3 (10). Therefore, in the present invention - In a specific example, an aqueous dispersion of a polystyrene-retaining acid containing K3,4-exetethylenedioxy porphin) and 〇·8 (divided into 11 201043671 sub-quantity η - 1 5 0,000) is used, but The scope of the invention is not limited thereto. Regarding the polyurethane carboxylic acid resin which is used in the antistatic coating composition for reducing coating defects of the present invention, the polyurethane resin used in the present invention is added to increase the composition having the antistatic coating composition. The peel strength between the surface of the coated polyester film and the tape. Therefore, the preferred polyurethane resin used in the present invention is an aqueous dispersion type resin which is an anionic polymer having a functional substituent containing at least one substituent selected from the group consisting of a hydroxyl group, an amine group, a hospital group and a rebel group. The composition of the ether polyamine decyl phthalate dispersion; more specifically, the water-dispersible polyurethane resin comprises: a trans-base anionic polyether polyurethane dispersion; containing a selected from the group consisting of allylamine, ethylene Repeating functional groups of amines, vinylpyridine, diethylaminoethyl methacrylate, diallyldimethylammonium chloride, decyl propylene decyloxyethyltrimethylammonium sulfate, and combinations thereof An anionic polyether polyurethane dispersion; or an anionic polyether polyamine containing a repeating functional group selected from the group consisting of methyl, ethyl, propyl, butyl, pentyl, hexyl, and combinations thereof Acid ester dispersion. The amount of the polyamine phthalate resin added may be from 100 to 1,000 parts by weight based on 100 parts by weight of the conductive polymer resin. If the amount of the polyamine phthalic acid resin to be added is less than 100 parts by weight, the peel strength of the tape will be lowered, and the amount of the polyamine phthalate resin added to the right is more than 1, and the weight of the ruthenium is sufficient. Guaranteed, but antifouling performance and antistatic performance will be degraded. Regarding the crosslinked tree 12 201043671 which is contained in the antistatic coating composition of the present invention, the μ formed on the crosslinked modified polyester film used in the present invention controls the density of the parent bonding so as to resist the solvent resistance of the antistatic layer. Sex and Coating Effectiveness &#佳的crosslinking resin can be (4) effecting more than amine, even J kinds of trees selected from the group consisting of isocyanate, carbonyl sulfonium, epoxide compound and melamine compound, the amount of cross-linking resin added is 1 The weight of the conductive polymer tree can be 100 to 1 θ, and I000 is severely bruised. When the amount of the crosslinked resin to be added is 100 parts by weight, the antistatic effect is hardly exhibited in some cases and the whitening event may occur due to low solvent resistance. On the other hand, if it is greater than I·parts by weight, the transparency is excellent, but it does not show antistatic performance. _ A fluororesin is added to the antistatic coating composition of this month to improve the antifouling performance and the financial property of the polyester film coated by the antistatic coating composition. Preferred examples of the X-fluororesin include tetrafluoroethylene, trifluoroethylene 4, fluorinated ethylene -4-(tetra)ethylene, chlorotrifluoroethylene, ethylene-tetrafluoroethylene copolymer, gas trifluoroethylene, and polytetrafluoroethylene. Ethylene copolymer, polyvinyl fluoride, polyvinylidene fluoride, and the like. The amount of the fluororesin added may be 10 to 100 parts by weight based on 100 parts by weight of the conductive polymer resin. If the amount of the fluororesin added is less than 1 〇, the antifouling performance will be deteriorated, and if the amount of the fluororesin added is more than 00 parts by weight, the transparency of the film, the peeling strength of the tape, and the antistatic property will be deteriorated. The antistatic coating composition of the present invention contains a surfactant to improve the stability, wettability and flatness of the coating composition of 13 201043671. In general, when the surfactant is used in the coating composition, the coating, and the wettability and flatness of the product are used.

Ii ^ ^ Μ , Bamboo pieces are improved, but the following disadvantages exist. 6# If the tape is peeled off, the important physical properties of the effect b will be deteriorated. In contrast, in the present invention, a good-one mono-alcohol surfactant is used as a surfactant in an antistatic coating composition to improve the wettability and the thousand integrity of the coating composition while maintaining the peel strength of the tape, and the like. The important coating properties of the fouling efficacy and its similar properties are addressed to solve the problems of prior art orders. P can be seen in Table 1 below. 'Insufficient display of antistatic coating composition containing prior art acrylic vinegar surfactant (Comparative Example 3) contrary to the antistatic coating composition of the present invention containing a B-glycol diol surfactant The antifouling properties and reduced wettability, particularly showing the low peel strength of commercially available 3m tape. In addition, the antistatic coating composition without surfactant (Comparative Example 4) exhibited significantly reduced flatness and wettability, which resulted in coating defects. Therefore, the antistatic coating composition contains an acetylene glycol surfactant, and thus achieves excellent wettability and flatness while maintaining important coating properties such as tape peel strength and antifouling properties, thereby reducing coating defects. Therefore, the antistatic coating composition of the present invention can be used to provide a high yield optical antistatic polyester film of excellent quality. The acetylene glycol surfactant for reducing coating defects in the antistatic coating composition of the present invention is a compound represented by the following formula 1: [Formula 1] 14 201043671

Its center and R4 are independently selected from C3-C10 linear or branched alkyl and halo, vinyl, allyl, ethynyl, phenyl, aryl, halogen, C3 _ci〇0 alkoxy, a substituent of a group consisting of a cyano group, an amine group, a hydroxyl group, a carbonyl group, an ester group and a carboxyl group; R2 and r3 are independently a fluorene or a C1-C5 alkyl group; m, η, p and q are independently in the range of 〇 to 20 The integer. In a preferred embodiment of the invention, 2,5,8,11-tetradecyl-6-dodecane-5,8-diol ethoxylate is used as the acetylene glycol surfactant, but The scope of the invention is not limited to this. That is, 'in the present invention, at least one selected from the group consisting of trifluoromethyl, methyl, vinyl, allyl, ethynyl, phenyl, aryl, pixel, decyloxy, cyano, amine, An acetylene glycol surfactant having a functional group of a group consisting of a hydroxyl group, a carbonyl group, an ester group, and a carboxyl group. The preferred content of the 'acetylene glycol surfactant in the antistatic coating composition herein is from 1 to 1 part by weight based on 100 parts by weight of the antistatic coating composition. If the amount of the surfactant added is less than 〇_〇〇1 parts by weight, the wettability of the film formed by the coating composition will be deteriorated, and if the amount of the surfactant added exceeds 1 wt%, it will be due to the coating. Coating defects are caused by fine bubbles contained in the composition. The above antistatic 15 201043671 coating composition of the present invention preferably has 0 5 « to ι 〇 having 1.0 wt% to 5 〇 wty > π based on 100 wt% of the antistatic coating composition. The body content, and more preferably, the composition will be insufficient. The mouth contains 篁 less than 0.5. The body content is large... and it shows antistatic function and if it is adversely affected. The transparency of the core forming 1 will be the same as the solvent used in the antistatic coating, & π electric twirling composition, containing water as the main medium. Further, in order to improve the coating properties and transparency of the antistatic coating composition of the present invention, the coating composition may contain a suitable organic solvent within a certain range which does not impair the effects of the present invention. Preferable examples of the organic solvent include isopropyl alcohol, butyl celIosolve, tributyl serotonin, acesulfame, acetone, ethanol, methanol, and the like. However, if the coating composition contains a large amount of organic solvent, there is a risk of explosion in the drying, stretching and heat treatment processes, which are carried out after the in-line coating process. Therefore, the content of the organic solvent in the antistatic coating composition is limited to 10 wt% or less, and preferably 5 wt% or less. The present invention provides an antistatic polyester film comprising an antistatic layer formed by coating an antistatic coating composition to one or both sides of a polyester film. The antistatic coating composition used in the antistatic polyester film of the present invention is an aqueous solution containing an acetylene diester surfactant in addition to the conductive polymer resin, the polyurethane resin, the crosslinked resin, and the fluororesin. The components and contents of the antistatic coating composition used for the antistatic polyester film of the present invention are the same as those of the above antistatic coating composition, and thus detailed description thereof will be omitted herein. 16 • 201043671 The antistatic polyester film of the present invention may have desirable physical properties depending on the components and contents of the antistatic coating composition. In particular, the antistatic coating composition contains: a conductive polymer resin which imparts excellent antistatic efficacy; a polyurethane resin which improves the tape peel strength; and a crosslinked resin which controls the crosslinking density Improved solvent resistance and coating efficiency; fluororesin, which improves antifouling performance; and acetylene glycol surfactant, which prevents deterioration of coating properties of the composition. 0 Thus, the antistatic polyester film produced by applying the antistatic coating composition to both sides of the polyester film has excellent transparency and antistatic properties, and the coating defects of the film are easily controlled and the film can be prevented. The physical properties are inferior, especially due to the nature of the surfactant. More specifically, the antistatic polyester film of the present invention is transparent and at the same time has a surface resistivity of less than 1 x 10 11 Q/sq and is even wiped with an organic solvent such as ethanol, methyl ethyl ketone, toluene or ethyl acetate. The surface of the film is then maintained at a surface resistivity of less than 1 x 1 〇u Ω/sq. Therefore, the antistatic polyester film of the present invention has excellent solvent resistance, so that the antistatic agent in the antistatic layer of the antistatic polysilicon film is not removed or dissolved. Further, the antistatic polyester film of the present invention exhibited 9 Å. Or 9〇. The above water contact angles and thus have excellent antifouling properties. In addition, the antistatic polyester film has a Niu〇#31B tape peel strength of 1,000 g/吋 or U00 g/吋 and a 3M #244 tape of 1〇〇g/18mm or 1〇〇g/18mm or more Peel strength. Therefore, the present invention can provide an antistatic polyester film which has excellent tape peel strength by forming an antistatic layer of 17 201043671 by coating an antistatic coating composition onto one or both sides of a polyester base film. Antifouling performance and solvent resistance. The physical properties of the antistatic polyester film of the present invention are not deteriorated by the surfactant, and thus the antistatic polyester ray satisfies the specific physical properties required for a large LCD panel in the future. More specifically, the antistatic polyester film of the present invention is suitable for use in any of the optical display devices of the group consisting of a liquid crystal display, a plasma display, a personal digital assistant, and a navigation system. Further, the present invention provides a method for producing an antistatic polyester film by an in-line process, the method comprising the steps of: I*) 1) uniaxially stretching a polyester film; 2) applying the antistatic coating composition of the present invention Coating on one or both sides of the uniaxially stretched polyester film to form an antistatic layer; and 3) re-stretching the polyester film on which the antistatic layer is formed to produce a biaxially stretched polyester film. First, the step of the method of producing an antistatic polyester film 丨) the uniaxially stretched polyester film will be as follows. When the polyester film is stretched in the step 1), any conventional resin ◎ can be used without any particular limitation. The polyester film as used herein refers to a polyester obtained by a polycondensation reaction of an aromatic dicarboxylic acid and an aliphatic diol. Aromatic acid, terephthalic acid, 2,6-naphthalenedicarboxylic acid or the like can be used. Further, isophthalic acid, phthalic acid, terephthalic acid, 2,6 naphthalene dicarboxylic acid, adipic acid, sebacic acid, hydroxycarboxylic acid (for example, p-oxime Xybenzolc acid) can be used. Or an analog thereof as an aromatic dicarboxylic acid component of a copolymerized polyacetate. Further, examples of the 'aliphatic diol include ethylene glycol, diethylene glycol 18 201043671 alcohol, hydrazine, 4-cyclohexane dimethanol, propylene glycol, butylene glycol, neopentyl glycol, and the like. The component and the second fermentation component may be used in combination of two or more kinds. Typical examples of the polyfluorene film include polyethylene terephthalate (PET), polyethylene-2,6-naphthalate (pen), and the like. Copolymers containing a third component other than the polyester tack can also be used in the present invention. Although specific examples of the use of polyester resins (including polyethylene terephtalate, polybutylene terephthalate, and polyethylene naphthalate) are described. Invention 'But it should be understood that the scope of the invention is not limited thereto. The above polyester was dried in a vacuum, melted in an extruder and extruded into a sheet shape via a T-die. The extruded sheet and the casting drum are brought into close contact by electrostatically charging in the cooling drum to cool and solidify the sheet. Then, the cured polyester sheet was uniaxially stretched by 2.5 to Q 4.5 times by a difference in speed between the rolls heated to a temperature higher than the glass transition temperature of the polyester resin to obtain a uniaxially stretched polyester film. Step 2) of the method for producing the antistatic polyester film of the present invention is the step of coating the antistatic coating composition of the present invention onto one or both sides of the uniaxially stretched polyester film from step 1) to form Antistatic layer. More specifically, the antistatic coating composition can be applied by Meyer bar coating, gravure coating or the like. A polar functional group may be introduced after coating the antistatic coating composition, and the surface of the film may be subjected to a corona discharge treatment to improve the adhesion between the coating and the crucible. The antistatic coating composition of the present invention comprises: bismuth parts by weight of conductive poly 19 201043671 resin; 100 to MOO parts by weight of water-dispersible polyurethane resin, which contains at least one selected from the group consisting of hydroxyl groups and amines. An anionic polyether polyurethane buffer dispersion having a functional group of a group consisting of a base group, an alkyl group and a carboxyl group; _ parts by weight of the cross-linking tree is intended to be selected from the group consisting of isocyanate, alkanoimide, and Pi. The fluororesin of 10 to 100 weights of the fluororesin of the group of 10 and 100 weights of the lining and the cyanoamine group, and the conductive polymer resin, the polyurethane resin, the crosslinking resin and the i (10) parts by weight 0.001 to 1 part by weight of acetylene diester surfactant, based on the fluororesin. The antistatic coating composition of the invention comprises: a conductive polymer resin, which imparts excellent antistatic performance; a polyurethane resin, which improves the peel strength of the tape; a crosslinked resin, a pothole, a hammer, a m6 m Α / The error is controlled by the density of the parent to improve solvent resistance and coating efficiency; the gas resin, which improves the anti-sweat performance; and the alpha glycol surfactant, which minimizes coating defects while ensuring the coating properties of the composition. The antistatic coating composition of the present invention can be used to provide a high quality optical antistatic polylactic acid film of excellent quality. The components and contents of the antistatic coating composition of the step of the production method of the present invention are the same as described above. Step: Remanufacturing: Electrostatic polymerization: Step 3) of the method of the present invention is a polyester film of the step 2) in which the antistatic layer is formed by biaxially stretching the surface to produce a biaxially stretched polymer. Ester film. Stretching: The re-stretching is performed by uniaxial stretching at a ratio of preferably 3' 〇 to 7.°, which is perpendicular to the uniaxially stretched vinegar film in the step "仃# After the stretching process, the biaxially stretched polyester film: cured and dried to produce an antistatic polyester film. The biaxially stretched polyester film produced by the method of the invention has 20 201043671 且 2 and is preferably thicker than the heart of the coffee. The invention will be described with reference to the following examples. However, it should be understood that these examples are to be construed as limiting the scope of the invention. , non-sexual purpose and not desired. Example 1 • Manufacture of uniaxially stretched polyester media

The helmet has an intrinsic viscosity of 0.625 dl/g and contains 2〇 #m.

When the poly-p-xylylene I (4) of the VS Xishi granules is out and the second = fully dry... The dry pellets are melted. " Tight 2: live through T, with a cooling drum." _ Stretched sheet = to produce an amorphous, unstretched sheet. The polyester film which is stretched by 3:5: Ray early axis stretching without pulling heat and moving in the direction of the medium. Next, the surface of the film to be coated is subjected to an electric discharge treatment to produce a polyester film. Step 2. Manufacture of biaxially stretched polyester film. 1 〇〇 heavy-duty conductive polymer resin (containing 0.5 wt% of poly-3,4-ethylenedioxythiophene and 〇8 wt% polystyrene) An aqueous dispersion of sulfonic acid (molecular weight ΜΠ 150,000), 200 parts by weight of a polyurethane coating (containing an anionic polyether polyurethane dispersion of a trans-base), a J-weighted JT wound The anti-static coating solution was prepared by mixing the milk tree day parent-agent (CR-5L from Esprix Technologies) and 100 parts by weight of fluororesin (z〇NYL from Dup〇nt) in water. 0.1 parts by weight of 2,5,8,n-tetramethyl-6-dodecyne-5,8-diol ethoxylate as an acetylene glycol surfactant, based on the antistatic coating solution Add to the antistatic coating 21 201043671 solution. The antistatic coating solution herein has a solids content of L5 Wt%. The prepared antistatic coating solution was applied to the uniaxially stretched polyester film I of the step 1 by electroquench discharge treatment using a Mel rod. Then, the coated coating solution was dried in a tenter zone of 1G5ti 14 (rc) and stretched 35 times in a direction perpendicular to the direction of movement of the film. The heat treatment was carried out at 24 (TC). The stretched film was allowed to stand for 4 seconds to produce a biaxially stretched antistatic polyester film having a thickness of 38 /zm. Example 2 A biaxially stretched polyester film was produced in the same manner as in Example 1. In addition to 1 part by weight of a conductive polymer resin (containing 5 wt% of poly-3,4-ethylenedioxythiophene and 8 wt% of polystyrenesulfonic acid (molecular weight Μη = 150,000) Aqueous dispersion), 4 parts by weight of polyamine phthalate resin (hydroxyl-containing anionic polyether polyamine phthalate dispersion), 2 parts by weight of epoxy resin crosslinker (purchased from Esprix Techn CR1〇gies CR-5L) and 150 parts by weight of fluororesin are mixed with each other to prepare an antistatic coating solution', and 5 parts by weight of 2,5, based on 1 part by weight of the antistatic coating solution, 8,11-tetramethyl-6-dodecyne·5,8-diol ethoxylate is added to the antistatic coating solution, and the antistatic coating solution has There was a solid content of 2% by weight. Example 3 A biaxially stretched polyester film was produced in the same manner as in Example 1, except that a functional group containing an allylamine and a repeating unit thereof as a polyurethane resin was used. Anionic polyether polyamine phthalate dispersion. Example 4 22 201043671

Comparative Example 1 was used in addition to the anionic polyether containing an ethyl group and an energy group thereof in Example 1 to produce a biaxially stretched polyester in the same manner as in Example 1 except that the antistatic coating solution was used. Membrane, ® complex unit as a formic acid ester dispersion of polyurethane resin. Comparative Example 2 A biaxially stretched polyester film was produced in the same manner as the fluorine-free resin. The biaxially stretched polyester film was produced without the polyurethane resin in the same manner as in Comparative Example 3 in the same manner as in the antistatic coating solution of Example 1. In the same manner, a biaxially stretched polyester film was produced in which an acrylate surfactant was used instead of B to remove the antistatic coating solution block-alcohol surfactant from Example 1. Comparative Example 4

f A biaxially stretched film was produced in the same manner as in Example 1, except that the acetylene glycol surfactant was not contained in the 5 hr antistatic coating solution. Comparative Example 5 A biaxially stretched polyester crucible was produced in the same manner as in the practice of "Life", except that the antistatic coating solution contained L5 4 parts of acetylene dimer. m Test Example The physical properties of the known examples manufactured in Examples 1 to 4 and Comparative Examples 丨 to 5 were evaluated, and the evaluation results are shown in the following table. * L water contact angle 23 201043671 The water contact angle was measured by a fixed-drop method water contact angle meter (Kyowa Interface Science Co., Ltd. model: Dropmaster 300) using pure water obtained by distilling ion-exchanged water. Five measurements were taken at different locations and the average was recorded. 2. Antistatic performance The surface resistivity of the sample was measured by a resistivity meter (Mitsubishi Chemical Co.; model: MCP-T600) under the conditions of a relative humidity of 23 ° C and 50% RH according to JIS K7194. 3. Ethanol resistance is wetted with ethanol (trade name "BEMC〇T", Asahi Kasei Fiba)" and coated with the cloth and the antistatic coating composition obtained above under a load of 0.5 kg. The surface of the ester film rubbed against each other 1 time. Next, the condition of the coated surface is evaluated according to the following criteria: 〇: the change in antistatic property is within 10]; Δ: the change in antistatic property is in the range of 1 〇1 to 丨〇丨1; X: resistance The change in electrostatic properties is greater than 10 Π. 4_ tape peel strength - 1 tape (tape No. 31B, Nitto Denko; 25 mm wide) attached to the above obtained conditions at a temperature of 23 ± 3 C and a relative humidity of 50 ± 5% On the coated surface of the polyester film. Next, the tape was pressed with a 2 kg rubber roller, allowed to stand for 1 hour, and then peeled off at a peeling speed of 〇3 MpM at an angle of 180, while using an adhesive/release tester (ari〇〇〇, Cheminstnunents) The peel strength of the tape was measured. 5. Tape peel strength - 2 24 201043671 Adhesive tape (3Μ tape No. 244; 18 coffee finish) is attached to each of the above obtained polythene at the temperature of the soil and the relative humidity of 50±5%. The coated surface of the film. Next, the tape was pressed with a 2 kg rubber roller, allowed to stand for 1 hour, and then at a peeling speed of 〇.3 MPM at 18 Torr. The peeling was performed at the same angle, and the peeling strength of the tape was measured by an adhesion/release tester (available from Cheminstruments, Inc.). 6. Appearance of the coating ❹ The coated surface of each of the polyester films obtained above was visually observed using various light sources (including fluorescent lamps, halogen lamps, and incandescent lamps), and the uncoated portion was evaluated according to the following criteria. Size and number. Examine the uncoated portion over 1 mm x 3 mm on the i m2 area. ◎ : 0 to 1 uncoated portion; 〇: 2 to 3 uncoated portions; △ : 4 to 10 uncoated portions; and X: greater than 10 uncoated portions section. [Table 1]

Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Surface resistivity (Ω /sq) 5xl07 6xl07 4x107 9x106 4x107 5x107 5xl〇7 Water contact angle 0 97 96 63 103 85 98 88 and f ethanolity 0 0 Δ X 〇0 0 tape peel strength - 1 (g / w) 1253 1178 1323 128 619 1247 893 tape peel strength - 2 (g / 18 mm) 235 230 231 45 91 238 176 Coating solution surface tension (millimeters/meter) 29 28 38 35 46 63 24 Coating appearance ◎ ◎ 0 X Δ XX 25 201043671 As seen in Table 1, the antistatic coating solution of Comparative Example 1 without fluorine resin In this case, the water contact angle of the film is small, indicating that the antifouling performance of the film is lowered. In the case of the antistatic coating solution of Comparative Example 2 containing no polyurethane resin, the tape peeling strength of the film was remarkably small, indicating that the desired physical properties could not be obtained. In the case of the coating solution of Comparative Example 3 containing an acrylate surfactant instead of an acetylene glycol surfactant, the 'water contact angle and the surface tension of the coating solution showed insufficient antifouling performance and deteriorated wettability of the coating. In this case, the peel strength between the 3M tape and the films is particularly small' indicating that the desired physical properties could not be obtained. Further, 'the high surface tension was exhibited in the case of the antistatic coating composition of Comparative Example 4 containing no surfactant, resulting in a decrease in flatness and wettability' resulting in coating defects. Further, in the case of Comparative Example 5 containing an excessive amount of acetylene glycol surfactant, it was difficult to achieve an optimum coating appearance quality. In contrast, in the case of Example 1 and Example 2, an antistatic coating solution containing a conductive polymer resin, a polyamine phthalate resin, a crosslinked resin, a fluororesin, and an ethylene glycol surfactant is used to form The antistatic layer 'polyacetate film is transparent and has a surface resistivity of less than lxl〇n Q/sq and remains less than lxl011 Ω even after wiping the surface with an organic solvent such as ethanol, mercaptoethyl ketone, toluene or ethyl acetate. The surface resistivity of /sq indicates that it has excellent solvent resistance' so that the antistatic agent in the antistatic layer is not removed or dissolved. Further, the films of Examples 1 and 2 exhibit a water contact angle of more than 90, indicating that they have excellent antifouling performance. Further, the film of Example 26 201043671 1 and Example 2 has ιοοο gram / 吋 or ι, Nitto #31B tape peeling strength of 〇〇〇g / 吋 above and 1 〇〇 g / 18 mm or gram / 18 mm or more 3M #244 tape peel strength and exhibit low surface tension values and excellent wetting efficiency, indicating that the coating defects in the film are eliminated or minimized.

As described in detail above, the present invention provides an antistatic coating composition having the best desired physical properties. Specifically, the antistatic coating composition of the present invention contains: a conductive polymer resin which imparts excellent antistatic performance; a polyurethane resin which improves the peel strength of the tape; and a crosslinked resin which is controlled by crosslinking Density and improved solvent resistance and coating efficiency; fluororesin, which has good anti-sweat efficacy by containing bismuth resin; 丨B- diol interface/tongue agent's improved tape peel strength and coating properties. Further, the antistatic coating composition of the present invention is applied to both sides or both sides of the polyester film to provide an antistatic polyester film which has excellent transparency and antistatic properties and at the same time has improved tape peel strength and antifouling. Performance and especially demonstrate reduced coating defects. In addition, the method of the present invention for producing an antistatic polyester film by an in-line coating process can provide an antistatic poly(tetra) which has excellent antistatic performance; even in the use of such as ethanol, methyl ethyl ketone, toluene or acetic acid The organic solvent of ethyl vinegar still maintains a surface resistance of less than 1 χ 1 〇 11 after wiping the surface, and thus has excellent solvent resistance, so that the electric charge in the antistatic layer of the (four) film is not removed or dissolved. The anti-wear produced by the method of the present invention: = The mulched film has excellent antifouling performance and improved tape peel strength and coating properties. Although the preferred embodiment of the present invention has been described by way of example, the present invention is to be understood by those skilled in the art, and it is understood that various modifications may be made without departing from the scope and spirit of the invention as disclosed in the appended claims. Modifications, additions and substitutions are possible. [Simple description of the diagram] 1 Benefit [Explanation of main component symbols]

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Claims (1)

201043671 VII. Patent application scope: 1. An antistatic coating composition comprising 100 parts by weight of a conductive polymer resin; 100 to 1,000 parts by weight of a water-dispersible polyamine phthalate resin, It consists of an anionic polyurea dispersion containing at least one group selected from the group consisting of a hydroxyl group, an amine group, an alkyl group and a carboxyl group; 100 to 1,000 parts by weight of a crosslinked resin by Obtaining a monomer obtained by polycondensation of a group consisting of isocyanate, carbonyl quinone, oxazoline and melamine; 10 to 100 parts by weight of a fluororesin; and additionally, based on 100 parts by weight of the above total component resin, 0 〇〇丨 to 1 part by weight of acetylene glycol surfactant. 2. The antistatic coating composition according to claim 1, wherein the acetylene glycol surfactant is a compound represented by the following formula 1: [Formula 1] Wherein 1 and R. 4 are independently selected from C3-C10 straight or branched alkyl and haloalkyl, vinyl, allyl, ethynyl, strepyl, aryl, cyclin, C3-C10 alkane a substituent of group 29 201043671 consisting of an oxy group, a cyano group, an amine group, a hydroxyl group, a carbonyl group, an ester group and a carboxyl group; R 2 and R 3 are independently a fluorene or a C 1 -C 5 alkyl group; and m, n, p and q are independently It is an integer in the range of 20. 3. The antistatic coating composition according to claim 1, wherein the water-dispersible polyurethane resin is selected from the group consisting of allylamine, vinylamine, ethyleneamine, vinylpyridine, and methacrylic acid. Anionic polyether polyurethane having a repeating functional unit of a group consisting of ethylaminoethyl ester, vaporized diallyldimethylammonium chloride, methacryloyloxyethyltrimethylammonium sulfate, and combinations thereof Dispersions. 4. The antistatic coating composition of claim 2, wherein the water-dispersible polyurethane resin comprises a group selected from the group consisting of methyl, ethyl, propyl, butyl, pentyl, hexyl and A repeating group of a group consisting of: an anionic polyscalar urethane for a dispersion. 5. The antistatic coating composition of claim 1, wherein the conductive polymer resin is an aqueous dispersion containing a polyanion and polythiophene; or an aqueous dispersion containing a polyanionic derivative and a polythiophene derivative. 6. The antistatic coating composition of claim 5, wherein the polyanion contained in the aqueous dispersion is from 1 wt% to 5 wt% of the total weight of the far aqueous dispersion. 7. The antistatic coating composition of claim 1, wherein the gas resin is at least one selected from the group consisting of polytetraethylene ethylene, triethylene glycol, hexaethylene propylene ethylene copolymer, polygas trifluoride. ? For the group consisting of rolled ethylene, tetrafluoroethylene copolymer, tetrafluoroethylene copolymer, polyvinyl fluoride and polypyrene. 8. The antistatic coating composition of claim 1, wherein the antistatic coating composition has a solid content of from 0.5 wt% to 10.0 wt%. 30 201043671 9. An antistatic poly s film comprising an antistatic layer formed by applying an antistatic coating composition of the first aspect of the invention to a polyester base film. 1 (>·, as claimed in claim 9 of the antistatic polyacetal film, wherein the antistatic is wiped with any organic solvent selected from the group consisting of ethanol, methyl ethyl, f benzene and ethyl acetate After the surface of the film is coated, the surface resistivity of the antistatic polyester film is less than 1χ1〇11 Q/sq. Ο For example, the antistatic polylactic acid film of the patent application 帛9 item, wherein the antistatic layer and the polyester substrate The NITT〇#3ib谬 tape peeling strength between the films is greater than 1, 〇〇〇g/吋; and the 3M #244 tape peeling strength is greater than 1〇〇g/18mm. 12, anti-static as in claim 9 a polyester film, wherein the antistatic polyester film has a water contact angle of more than 90. 13. A method for producing an antistatic polyester film, the method comprising the following steps of uniaxially stretching a polyester film; The antistatic coating composition of item 1 is applied to one or both sides of the uniaxially stretched polyester film to form an antistatic layer; and the polyester film having the antistatic layer formed thereon is further stretched to obtain Biaxially stretched polyester film. 14. Method of claim 13 Wherein the antistatic coating composition having a solid content of 0.50 wt% to 10 wt% of 31