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WO2015102336A1 - Film polyester et son procédé de fabrication - Google Patents

Film polyester et son procédé de fabrication Download PDF

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Publication number
WO2015102336A1
WO2015102336A1 PCT/KR2014/012968 KR2014012968W WO2015102336A1 WO 2015102336 A1 WO2015102336 A1 WO 2015102336A1 KR 2014012968 W KR2014012968 W KR 2014012968W WO 2015102336 A1 WO2015102336 A1 WO 2015102336A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
polyester film
water
coating composition
polyester
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2014/012968
Other languages
English (en)
Korean (ko)
Inventor
조은혜
김태현
백상현
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kolon Industries Inc
Original Assignee
Kolon Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kolon Industries Inc filed Critical Kolon Industries Inc
Publication of WO2015102336A1 publication Critical patent/WO2015102336A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/005—Shaping by stretching, e.g. drawing through a die; Apparatus therefor characterised by the choice of materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/202—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/21—Anti-static
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/302—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/80—Medical packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04—Polyurethanes

Definitions

  • the present invention relates to an antistatic polyester film, and has a lower surface resistance than a conventional polyester film, and relates to a polyester film coated with a conductive polymer antistatic agent for packaging, electronic material processing, product protection, and a method of manufacturing the same.
  • the antistatic polyester film produced by the production method of the present invention is useful as a process film and a protective film because resistance to water or a solvent is improved.
  • Antistatic refers to discharging the electric charge accumulated on the insulator surface by an appropriate method. This antistatic performance is required because static electricity is generated in the film manufacturing process or the film processing process, and dust or foreign matter adheres to the product, or when the organic solvent is used as a discharge phenomenon, a risk of ignition occurs. Therefore, providing antistatic performance has become an essential requirement.
  • An antistatic layer is formed on the film to impart such antistatic performance.
  • the binder resin used to form the antistatic layer has a low crosslinking density, the coating film is damaged by a solvent used in a later process, and defects may occur. There is a possibility. Therefore, there has been a study to improve the solvent resistance of the binder resin forming the antistatic layer.
  • the present invention is to provide a polyester film having an antistatic coating layer having improved surface resistance and excellent resistance to moisture or a solvent, and a method of manufacturing the same. That is, the present invention provides a polyester film having a low swelling ratio and a high gel fraction of an antistatic layer and a method of manufacturing the same.
  • the present invention for achieving the above object is as follows.
  • the present invention is a polyester film comprising a base layer made of a polyester resin and an antistatic layer laminated on one side or both sides of the base layer,
  • the antistatic layer is composed of 10 to 75% by weight of a linear polymer having two terminal groups and 25 to 90% by weight of a branched polymer having three or more terminal groups, or a water-dispersible polyurethane resin consisting of a branched polymer having three or more terminal groups,
  • the present invention relates to a polyester film formed by coating and drying an aqueous coating composition comprising a conductive polymer resin selected from polythiophene or polythiophene derivative and water.
  • aqueous coating composition comprising a water-dispersible polyurethane resin, a polythiophene or a polythiophene derivative made of a branched polymer, and a water-based coating composition including water and then stretching in a transverse direction;
  • It relates to a method for producing a polyester film comprising a.
  • the polyester film according to the present invention has an antistatic property on the coated surface, and prevents the overlapping due to static electricity between the film during the off-sheet operation, there is an advantage that can prevent the problem by the static electricity in the applied product.
  • the antistatic layer has excellent antistatic performance and solvent resistance, and has adhesion to the tape and printability, and one surface of the base layer on which the antistatic layer is not formed has adhesiveness and printability.
  • the solvent resistance of the solvent such as normal hexane, toluene, ethyl acetate, etc. is very excellent, there is a wide range of solvent selection in the post-process.
  • One aspect of the present invention is a polyester film comprising a base layer made of a polyester resin and an antistatic layer laminated on one side or both sides of the base layer, wherein the antistatic layer is 10 to 75% by weight of a linear polymer having two terminal groups And a conductive polymer resin selected from water-dispersible polyurethane resins, polythiophenes or polythiophene derivatives consisting of 25 to 90% by weight of branched polymers having 3 or more terminal groups, or branched polymers having 3 or more terminal groups, and It relates to a polyester film formed by coating and drying an aqueous coating composition comprising water.
  • the antistatic layer may be that the surface resistance of 10 5 ⁇ 10 9 ⁇ / sq.
  • the aqueous coating composition may further include any one or two or more additives selected from wetting agents, alcohol solvents, particles, slip agents, crosslinking agents, curing agents.
  • the water-based coating composition is a water dispersible polyurethane resin 0.1 to 10% by weight, conductive polymer resin 0.1 to 10% by weight, wetting agent 0.1 to 1% by weight, alcohol solvent 0.1 to 10% by weight, crosslinking agent 0.1 to 10% by weight and the rest may be to include water to satisfy 100% by weight.
  • the terminal group may be an isocyanate group in which part or all of the terminal groups are blocked with an inorganic acid salt group.
  • the water-dispersible polyurethane resin is prepared by reacting 39 to 45% by weight of polyol, 0.3 to 1.2% by weight of trimethylol propane and 50 to 57% by weight of isocyanate compounds to prepare a prepolymer having an isocyanate as an end group.
  • the inorganic acid may be prepared by reacting 3 to 4% by weight, blocking an ionic group at an isocyanate terminal.
  • the water-dispersible polyurethane resin may have a weight average molecular weight of 10,000 ⁇ 20,000g / mol.
  • the antistatic layer may be coated by an inline coating method.
  • the antistatic layer may be a dry coating thickness of 10 ⁇ 500nm.
  • the polyester film may be that the total thickness of 12 ⁇ 250 ⁇ m.
  • the present invention relates to a method for producing a polyester film, one aspect of the production method
  • aqueous coating composition comprising a water-dispersible polyurethane resin, a polythiophene or a polythiophene derivative made of a branched polymer, and a water-based coating composition including water and then stretching in a transverse direction;
  • the present invention is characterized in that an antistatic layer for imparting antistatic performance to one or both surfaces of a polyester film is formed by an inline coating method.
  • the present invention is applied by an in-line coating method, by applying an aqueous coating composition for drying and curing in the stretching process to form an antistatic layer, the coating thickness is thin, not only excellent adhesion to the polyester film, but also moisture And resistance to solvents is excellent.
  • the base layer may be a film made of a polyester resin, and more specifically, polyethylene terephthalate, polyethylene naphthalate. More preferably, polyethylene terephthalate having an intrinsic viscosity in the range of 0.6 to 0.7 is more excellent in weather resistance and hydrolysis resistance.
  • the polyester film has a thickness of 12 to 300 ⁇ m and is advantageous in that it can implement various laminated structures.
  • the antistatic layer is composed of 10 to 75% by weight of a linear polymer having two terminal groups and 25 to 90% by weight of a branched polymer having three or more terminal groups, or a water-dispersible poly consisting of a branched polymer having three or more terminal groups. It is formed by coating and drying an aqueous coating composition comprising a conductive polymer resin and water selected from a urethane resin, polythiophene or polythiophene derivative, and is coated by an inline coating method.
  • the aqueous coating composition may further include any one or two or more additives selected from wetting agents, alcohol solvents, particles, slip agents, crosslinking agents, and curing agents.
  • the water-based composition In order to enable in-line coating, the water-based composition should be used. However, when the water-based composition is made, the durability of the water or the solvent is weakened in the subsequent process. However, the inventors of the present invention mix specific water-dispersible polyurethane resin and conductive polymer resin. According to the use, while in-line coating is possible, the excellent properties of the antistatic coating layer formed, the water resistance and durability was found to be able to express the physical properties equivalent to or more than the existing offline coating to complete the present invention.
  • the antistatic layer may have a dry coating thickness of 10 to 500 nm and a surface resistance of 10 5 to 10 9 ⁇ / sq. If the dry coating thickness is less than 10nm, the surface resistance may be high, and if it exceeds 500nm, the cost may increase, the viscosity may increase and the processability may be reduced. It is preferable to apply to a substrate film such as ITO in the process range the surface resistance of 10 5 ⁇ 10 9 ⁇ / sq .
  • the water-based coating composition is 0.1 to 10% by weight of water-dispersible polyurethane resin, 0.1 to 10% by weight of conductive polymer resin, 0.1 to 1% by weight of wetting agent, 0.1 to 10% by weight of alcohol solvent, 0.1 to 10 crosslinking agent
  • the weight percent and the balance may be to include water to satisfy 100 weight percent.
  • the water-dispersible polyurethane resin is a branched polymer having at least three isocyanate functional groups as terminal groups, part or all of the isocyanate groups are blocked with an inorganic acid salt group, and more specifically, blocked with an inorganic salt such as sulfate, Two isocyanate functional groups are included, in which some or all of the isocyanate groups are blocked with inorganic acid groups, and more particularly include linear polymers blocked with inorganic salts such as sulfate.
  • the water-dispersible polyurethane resin is composed of 10 to 75% by weight of the linear polymer having two terminal groups and 25 to 90% by weight of the branched polymer having three or more terminal groups, or 100% by weight of the branched polymer having three or more terminal groups. It may be. By using such resin, there exists an effect that a crosslinking density improves and solvent resistance improves.
  • the branched polymer means a resin having 3 or 3 or more isocyanate functional groups.
  • a method of preparing the water-dispersible polyurethane resin may include preparing a prepolymer having an isocyanate as an end group by reacting 39 to 45 wt% of a polyol, 0.3 to 1.2 wt% of a trimethylol propane, and 50 to 57 wt% of an isocyanate compound. After that, it is preferable to use an inorganic acid salt prepared by blocking 3 to 4% by weight of an ionic group of sulfate at an isocyanate end, and the inorganic acid salt is not limited thereto.
  • the gel is not gelled in the range of 10,000 to 20,000 g / mol in weight average molecular weight, it is preferable to obtain a coating film which is water dispersible and excellent in high temperature and high humidity.
  • the weight average molecular weight can be measured using a GPC-MALS (Multi Angle Light Scattering) system (Wyatt, Inc.), the configuration of the MALS system is as follows.
  • GPC-MALS Multi Angle Light Scattering
  • RI detector Optilab rex
  • the polyol may be a polyester-based polyol or a polyether-based polyol, preferably a polyester-based polyol.
  • Polyester-based polyols are polyols prepared from the reaction of carboxylic acids, sebacic acids or acid anhydrides with polyhydric alcohols. The type of the polyol is not limited, and it is preferable to use a polyester polyol having a weight average molecular weight of 600 to 3,000 g / mol.
  • Polyester-based polyols include polyols prepared from the reaction of carboxylic acid, sebacic acid or an acid anhydride with a polyhydric alcohol.
  • the type of the polyol is not limited, and it is preferable to use a polyester polyol having a weight average molecular weight of 600 to 3,000 g / mol. Its content is preferably 39 to 45% by weight. When used at less than 39% by weight, the molecular weight is small, the primer layer is too hard, it is difficult to stretch, the coating appearance is not excellent, and when more than 45% by weight, the ILC layer is too soft (Soft) is poor blocking properties Can be.
  • Soft Soft
  • the trimethylol propane is used to prepare a prepolymer having a trifunctional group, and it is preferable to use 0.3 to 1.2% by weight.
  • the crosslinking density is lowered, and anti-blocking property may be lowered, and when used in excess of 1.2% by weight, the crosslinking density becomes too high, resulting in poor elongation. This is not excellent and the adhesion may be bad.
  • the isocyanate compound is not limited but preferably hexamethylene diisocyanate is used.
  • the content can be prepared a prepolymer having a trifunctional group in the range using 50 to 57% by weight.
  • the inorganic acid salt is preferably used sodium hydrogen sulfate (Sodium Hydrogen Sulfate), the content is preferably used 3 to 4% by weight.
  • the water-dispersible polyurethane resin is preferably used 0.1 to 10% by weight of the total water-based coating composition, when less than 0.1% by weight weakened the adhesion of polythiophene-containing water dispersion or polythiophene derivatives In case of using more than 10% by weight, after stretching, the surface resistance may not come out.
  • the conductive polymer resin is used to impart antistatic properties, and may include polythiophene or polythiophene derivative. More preferably, an aqueous dispersion of polyanion and polythiophene or an aqueous dispersion of polyanion and polythiophene derivative can be used.
  • the said polyanion is an acidic polymer, and is high molecular carboxylic acid, high molecular sulfonic acid, polyvinyl sulfonic acid, etc.
  • Polymer carboxylic acids include polyacrylic and polymethacrylic acid, and polymer sulphonic acid includes polystyrene sulfonic acid.
  • the poly anion is excessively present in the solid weight ratio in terms of conductivity, and the poly anion is more than 1% by weight with respect to 1% by weight of polythiophene or polythiophene derivative, 3
  • the weight% or less is preferable.
  • the conductive polymer resin is preferably used 0.1 to 10% by weight of the total water-based coating composition, when less than 0.1% by weight may be high surface resistance, when the weight exceeds 10% by weight, the viscosity is increased Since the processability can be reduced to increase the best antistatic layer in the above range can be formed.
  • the mixing ratio of the polythiophene-containing water dispersion or the polythiophene derivative to the polyurethane-based resin is 50 to 150% by weight, and if the mixing ratio is less than 50% by weight, the surface resistance may not come out. If it is more than 150% by weight, the adhesion of the polythiophene-containing water dispersion or polythiophene derivative may be weakened and released.
  • the wetting agent is used to uniformly apply the emulsion onto the polyester film, and it is preferable to use one selected from polyethylene glycol, polyethylene ester, modified silicone, fluorine mixture, etc., since the coating property is greatly improved, and the content thereof is 0.1. It is preferable to use ⁇ 0.5% by weight because of excellent adhesion.
  • the alcohol solvent is used to uniformly apply the increased wettability, specifically, for example, isopropyl alcohol, ethyl cellussolve, methyl cellusol portion, butyl cellussolve, and the like, and may be 0.1 to 10% by weight. Using is preferable for reasons of coating property and processability.
  • the crosslinking agent is used to improve solvent resistance, and specifically, for example, any one or more compounds selected from the group consisting of block isocyanate-based, carbodiimide-based, oxazoline-based, epoxy-based and melamine-based may be used. .
  • the content is preferably 0.1 to 10% by weight, more preferably 0.1 to 0.5% by weight. When using less than 0.1% by weight may be a solvent resistance, when used in excess of 10% by weight may not come out of the surface resistance.
  • particles may be added to improve the blocking property of the coating layer using the emulsion, and inorganic particles and organic particles may be added.
  • the content is preferably used 0.01 to 10% by weight.
  • additives such as UV stabilizers, slip agents, curing agents, and the like, which are commonly used in the art, may be further added as necessary.
  • aqueous coating composition comprising a water-dispersible polyurethane resin, a polythiophene or a polythiophene derivative made of a branched polymer, and a water-based coating composition including water and then stretching in a transverse direction;
  • It relates to a method for producing a polyester film comprising a.
  • the antistatic layer is formed Corona treatment to the surface; may be to include more.
  • a coating thickness is 50-150 nm of dry coating thickness.
  • the corona treatment is to further improve printability, and the corona treatment is not limited as long as it is a conventional method in the art.
  • Step a) is a process of melting the resin in a cylinder to produce a polyester film into a sheet through a T-die in order to produce a polyester film.
  • Step b) is a process for producing a polyester film by biaxially stretching the polyester sheet, it is preferable that the stretching in the machine direction using one or more rollers.
  • an antistatic layer is formed by the in-line coating method, and it is preferable to use an emulsion that is dispersed to be used for the in-line coating.
  • the composition of the water-based coating composition for forming the antistatic layer is as described above, it is preferable to apply so that the dry coating thickness after stretching is 10 ⁇ 500nm.
  • the aqueous coating composition is applied to form an antistatic layer, and then stretched in the transverse direction. At this time, it is preferable to use a tenter for lateral stretch.
  • the surface resistance of the antistatic layer of the present invention was evaluated.
  • the measurement method is Mitsubishi Chemical Corp. Surface resistance was measured using a Hiresta-Up MCP-HP450 instrument at 25 ° C., 50% Rh, 10 V (or 100 V), 10 seconds.
  • the solvent resistance of the antistatic layer of this invention was evaluated.
  • the measuring method was to measure solvent resistance by placing a metal plate having a width of 25 mm ⁇ 25 mm and a weight of 915 g on a microfiber cloth in which isopropyl alcohol, ethyl alcohol, normal hexane, toluene, and ethyl acetate were respectively coated, and rubbed 10 times.
  • the condition of the coating side was evaluated based on the following criteria.
  • the prepared water-dispersible binder was blended with an impurity ion removal reinforced conductive polymer resin (SY-CP-E421M, Suyang Chemtech Co., Ltd.) at a weight ratio of 30:70 to prepare a mixed solution.
  • an impurity ion removal reinforced conductive polymer resin SY-CP-E421M, Suyang Chemtech Co., Ltd.
  • a water-dispersed polyurethane having a linear polymer content of 50% by weight and a branched polymer content of 50% by weight was prepared.
  • a water-dispersed polyurethane having a linear polymer content of 50% by weight and a branched polymer content of 50% by weight was prepared.
  • the prepared water-dispersible binder was blended with an impurity ion removal reinforced conductive polymer resin (SY-CP-E421M, Suyang Chemtech Co., Ltd.) at a weight ratio of 30:70 to prepare a mixed solution.
  • an impurity ion removal reinforced conductive polymer resin SY-CP-E421M, Suyang Chemtech Co., Ltd.
  • the prepared water-dispersible binder was blended with an impurity ion removal reinforced conductive polymer resin (SY-CP-E421M, Suyang Chemtech Co., Ltd.) at a weight ratio of 30:70 to prepare a mixed solution.
  • an impurity ion removal reinforced conductive polymer resin SY-CP-E421M, Suyang Chemtech Co., Ltd.
  • a polyethylene terephthalate chip having a moisture content of 100 ppm or less was injected into a melt extruder, melted, and then extruded through a T-die, followed by quenching and solidifying with a casting drum having a surface temperature of 20 ° C. to prepare a polyethylene terephthalate sheet having a thickness of 2000 ⁇ m. .
  • the prepared polyethylene terephthalate sheet was stretched 3.5 times in the machine direction (MD) at 110 ° C. and then cooled to room temperature. Thereafter, the coating composition 1 was coated on one surface by a bar coating method, and then stretched 3.5 times in a transverse direction (TD) through preheating and drying at 140 ° C. Thereafter, heat treatment was performed at 235 ° C. in a 5-stage tenter, followed by heat setting at 10 ° C. in the machine direction and the transverse direction at 200 ° C., thereby preparing a biaxially stretched film having a thickness of 100 ⁇ m having an antistatic layer formed on one surface thereof. The dry coating thickness after stretching of the antistatic layer was 75 nm.
  • a polyethylene terephthalate chip having a moisture content of 100 ppm or less was injected into a melt extruder, melted, and then extruded through a T-die, followed by quenching and solidifying with a casting drum having a surface temperature of 20 ° C. to prepare a polyethylene terephthalate sheet having a thickness of 2000 ⁇ m. .
  • the prepared polyethylene terephthalate sheet was stretched 3.5 times in the machine direction (MD) at 110 ° C. and then cooled to room temperature. Thereafter, the coating composition 2 was coated on one surface by a bar coating method, and then stretched 3.5 times in a transverse direction (TD) through preheating and drying at 140 ° C. Thereafter, heat treatment was performed at 235 ° C. in a 5-stage tenter, followed by heat setting at 10 ° C. in the machine direction and the transverse direction at 200 ° C., thereby preparing a biaxially stretched film having a thickness of 100 ⁇ m having an antistatic layer formed on one surface thereof. The dry coating thickness after stretching of the antistatic layer was 75 nm.
  • a polyethylene terephthalate chip having a moisture content of 100 ppm or less was injected into a melt extruder, melted, and then extruded through a T-die, followed by quenching and solidifying with a casting drum having a surface temperature of 20 ° C. to prepare a polyethylene terephthalate sheet having a thickness of 2000 ⁇ m. .
  • the prepared polyethylene terephthalate sheet was stretched 3.5 times in the machine direction (MD) at 110 ° C. and then cooled to room temperature. Thereafter, the coating composition 3 was coated on one surface by a bar coating method, and then stretched 3.5 times in a transverse direction (TD) through preheating and drying at 140 ° C. Thereafter, heat treatment was performed at 235 ° C. in a 5-stage tenter, followed by heat setting at 10 ° C. in the machine direction and the transverse direction at 200 ° C., thereby preparing a biaxially stretched film having a thickness of 100 ⁇ m having an antistatic layer formed on one surface thereof. The dry coating thickness after stretching of the antistatic layer was 75 nm.
  • a polyethylene terephthalate chip having a moisture content of 100 ppm or less was injected into a melt extruder, melted, and then extruded through a T-die, followed by quenching and solidifying with a casting drum having a surface temperature of 20 ° C. to prepare a polyethylene terephthalate sheet having a thickness of 2000 ⁇ m. .
  • the prepared polyethylene terephthalate sheet was stretched 3.5 times in the machine direction (MD) at 110 ° C. and then cooled to room temperature. Thereafter, the coating composition 4 was coated on one surface by a bar coating method, and then stretched 3.5 times in a transverse direction (TD) through preheating and drying at 140 ° C. Thereafter, heat treatment was performed at 235 ° C. in a 5-stage tenter, followed by heat setting at 10 ° C. in the machine direction and the transverse direction at 200 ° C., thereby preparing a biaxially stretched film having a thickness of 100 ⁇ m having an antistatic layer formed on one surface thereof. The dry coating thickness after stretching of the antistatic layer was 75 nm.
  • a polyethylene terephthalate chip having a moisture content of 100 ppm or less was injected into a melt extruder, melted, and then extruded through a T-die, followed by quenching and solidifying with a casting drum having a surface temperature of 20 ° C. to prepare a polyethylene terephthalate sheet having a thickness of 2000 ⁇ m. .
  • the prepared polyethylene terephthalate sheet was stretched 3.5 times in the machine direction (MD) at 110 ° C. and then cooled to room temperature. Thereafter, the coating composition 5 was coated on one surface by a bar coating method, and then stretched 3.5 times in a transverse direction (TD) through preheating and drying at 140 ° C. Thereafter, heat treatment was performed at 235 ° C. in a 5-stage tenter, followed by heat setting at 10 ° C. in the machine direction and the transverse direction at 200 ° C., thereby preparing a biaxially stretched film having a thickness of 100 ⁇ m having an antistatic layer formed on one surface thereof. The dry coating thickness after stretching of the antistatic layer was 75 nm.
  • a polyethylene terephthalate chip having a moisture content of 100 ppm or less was injected into a melt extruder, melted, and then extruded through a T-die, followed by quenching and solidifying with a casting drum having a surface temperature of 20 ° C. to prepare a polyethylene terephthalate sheet having a thickness of 2000 ⁇ m. .
  • the prepared polyethylene terephthalate sheet was stretched 3.5 times in the machine direction (MD) at 110 ° C. and then cooled to room temperature. Thereafter, the coating composition 6 was coated on one surface by a bar coating method, and then stretched 3.5 times in a transverse direction (TD) through preheating and drying at 140 ° C. Thereafter, heat treatment was performed at 235 ° C. in a 5-stage tenter, followed by heat setting at 10 ° C. in the machine direction and the transverse direction at 200 ° C., thereby preparing a biaxially stretched film having a thickness of 100 ⁇ m having an antistatic layer formed on one surface thereof. The dry coating thickness after stretching of the antistatic layer was 75 nm.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Laminated Bodies (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)

Abstract

La présente invention concerne un film polyester antistatique et un film polyester dont la résistance en surface est inférieure à celle de films polyester classiques et qui est revêtu d'un agent antistatique polymère conducteur, destiné à des fins d'emballage, un procédé de traitement de matériau électronique et un produit de protection ainsi qu'un procédé de fabrication dudit film polyester.
PCT/KR2014/012968 2013-12-30 2014-12-29 Film polyester et son procédé de fabrication Ceased WO2015102336A1 (fr)

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KR10-2013-0166534 2013-12-30
KR1020130166534A KR20150077745A (ko) 2013-12-30 2013-12-30 폴리에스테르 필름 및 이의 제조방법

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Cited By (3)

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CN108164728A (zh) * 2017-11-23 2018-06-15 上海世系新材料有限公司 抗静电液组合物及抗静电聚酯薄膜的制备方法
CN114106384A (zh) * 2020-08-31 2022-03-01 南亚塑胶工业股份有限公司 抗静电聚酯薄膜及抗静电涂液组成物
CN115850773A (zh) * 2022-12-09 2023-03-28 合肥乐凯科技产业有限公司 一种防静电膜及其制备方法

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KR101887233B1 (ko) * 2016-02-03 2018-08-10 대림산업 주식회사 이축연신 폴리프로필렌 다층 필름 및 이를 이용한 디스플레이용 보호 필름
KR102589138B1 (ko) * 2018-09-28 2023-10-12 코오롱인더스트리 주식회사 고투명 폴리에스테르 필름

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CN114106384A (zh) * 2020-08-31 2022-03-01 南亚塑胶工业股份有限公司 抗静电聚酯薄膜及抗静电涂液组成物
CN115850773A (zh) * 2022-12-09 2023-03-28 合肥乐凯科技产业有限公司 一种防静电膜及其制备方法
CN115850773B (zh) * 2022-12-09 2023-09-15 合肥乐凯科技产业有限公司 一种防静电膜及其制备方法

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