WO2009002110A2 - Composition adhésive autocollante à caractéristiques de pelage améliorées et films de protection utilisant une telle composition - Google Patents

Composition adhésive autocollante à caractéristiques de pelage améliorées et films de protection utilisant une telle composition Download PDF

Info

Publication number
WO2009002110A2
WO2009002110A2 PCT/KR2008/003693 KR2008003693W WO2009002110A2 WO 2009002110 A2 WO2009002110 A2 WO 2009002110A2 KR 2008003693 W KR2008003693 W KR 2008003693W WO 2009002110 A2 WO2009002110 A2 WO 2009002110A2
Authority
WO
WIPO (PCT)
Prior art keywords
protective film
pressure
sensitive adhesive
adhesive composition
meth
Prior art date
Application number
PCT/KR2008/003693
Other languages
English (en)
Other versions
WO2009002110A3 (fr
Inventor
Kwang Suck Suh
Jong Eun Kim
Tae Young Kim
Tae Hee Lee
Young Hee Lee
Original Assignee
Kwang Suck Suh
Jong Eun Kim
Tae Young Kim
Tae Hee Lee
Young Hee Lee
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 Kwang Suck Suh, Jong Eun Kim, Tae Young Kim, Tae Hee Lee, Young Hee Lee filed Critical Kwang Suck Suh
Priority to KR1020107000374A priority Critical patent/KR101198929B1/ko
Publication of WO2009002110A2 publication Critical patent/WO2009002110A2/fr
Publication of WO2009002110A3 publication Critical patent/WO2009002110A3/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09J133/08—Homopolymers or copolymers of acrylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/385—Acrylic polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer

Definitions

  • the present invention relates to a pressure-sensitive adhesive composition for pressure-sensitive adhesive tapes or protective films (hereinafter, referred to as "a protective film”), which has improved peeling performance, and, more particularly, to a pressure-sensitive adhesive for protective films, which can improve a phenomenon (hereinafter, referred to as "an adhesive transfer phenomenon from local pressing or scratching") in which a part of an adhesive layer of a protective film remains on the surface of an adherend or is transferred to the surface of the adherend when a strong force is locally applied to the surface of the protective film attached to the surface of an electronic part or an electronic product, for example, the protective film is scratched by the corners or edges of a workbench.
  • a protective film which has improved peeling performance
  • a pressure-sensitive adhesive for protective films which can improve a phenomenon (hereinafter, referred to as "an adhesive transfer phenomenon from local pressing or scratching") in which a part of an adhesive layer of a protective film remains on the surface of an adherend or is transferred to the surface of the adherend when
  • FPDs flat panel displays
  • polarizing films such as polarizing films, mobile phone screens, and the like
  • workbench in a state in which a protective film is attached to them in order to protect their surfaces.
  • a pressure-sensitive film or a protective film is a film having an adhesive layer, which is formed by applying a mixture in which an acrylic or methacrylic copolymer adhesive having curable functional groups is mixed with an initiator or a curing agent at a predetermined mixing ratio on one side or both sides of a base film made of polyester, such as polyethyleneterephthalate (PET), polyethylene (PE), polypropylene (PP), ethylenevinyl acetate (EVA), or the like, and then heating the base film coated with the mixture or irradiating the base film coated with the mixture with ultraviolet rays.
  • PET polyethyleneterephthalate
  • PE polyethylene
  • PP polypropylene
  • EVA ethylenevinyl acetate
  • various functions can be imparted to the respective surfaces of the protective film.
  • a typical example of the protective film includes an antistatic film imparted with an antistatic property.
  • a layer facing an adherend is an adhesive layer.
  • This adhesive layer is a very important factor for determining the peeling force between the adhesive layer and the adherend or determining the adhesive transfer phenomenon from local pressing or scratching.
  • This phenomenon usually occurs during a process of handling a polarizing film for liquid crystal displays (LCDs). Further, the polarizing film, the surface of which is composed of triacetyl cellulose or is functionally coated with triacetyl cellulose, may be locally scratched. In this process of handling a polarizing film for liquid crystal displays (LCDs), it is most important to completely remove the adhesive adhered to the surface of the polarizing film before conducting subsequent procedures. Therefore, this work incurs the result that working time is increased and the surface of the polarizing film is damaged. Recently, in a process of removing a protective film from LCDs, a sash frame is applied, and then the protective film is removed. In this case, the protective film is pressed by the edges of the sash made of Steel Use Stainless (SUS), so that adhesive residues are left between the protective film and the sash, with the result that it is difficult to suitably conduct subsequent procedures.
  • SUS Steel Use Stainless
  • an object of the present invention is to provide a pressure-sensitive adhesive composition for a protective film, by which, in a protective film to be used for protecting the surface of optical products, the protective film being used for flat panel displays (FPDs), an adhesive layer of the protective film does not remain on the surface of an adherend at the time of removing the protective film even when the protective film has been locally pressed or scratched by an external force during treatment or transportation, that is, an adhesive transfer phenomenon from local pressing or scratching is remarkably improved, thereby improving the peeling performance of the protective film.
  • FPDs flat panel displays
  • Another object of the present invention is to provide a protective film manufactured using the pressure-sensitive adhesive composition, in which an adhesive transfer phenomenon from local pressing or scratching is remarkably improved.
  • the present invention provides a pressure- sensitive adhesive composition for a protective film, which prevents a phenomenon in which an adhesive is transferred to an adherend from local pressing or scratching, thus improving the peeling performance of the protective film, including a curing agent having a monofunctional group or a difunctional group.
  • the pressure-sensitive adhesive composition according to the present invention may include an acrylic copolymer or a methacrylic copolymer as an adhesive and an isocyanate compound as a curing agent.
  • a protective film having improved peeling performance can be manufactured using the pressure-sensitive adhesive composition according to the present invention.
  • an adhesive layer is formed on the surface of a base film to have a predetermined thickness.
  • the desired peeling force of an adhesive layer can be attained by suitably controlling the kind of an adhesive, the content ratio of the adhesive to a reaction initiator, and reaction conditions, such as temperature, pressure, reaction time, etc.
  • a functional protective film can also be manufactured by imparting additional functions, such as antistatic properties, etc., thereto.
  • the present inventors discovered a very important fact concerning adhesive transfer phenomenon from local pressing or scratching while researching into methods of improving the adhesive transfer phenomenon from local pressing or scratching.
  • the adhesive layer for a protective film is formed by mixing an acrylic copolymer or methacrylic copolymer having a hydroxyl group, an amino group or a carboxyl group, this copolymer being a major component of an adhesive, with a reaction initiator or curing agent, such as a metal chelate compound, an isocyanate compound, a melamine compound or an epoxy compound, in a predetermined mixing ratio, applying the resulting mixture onto the surface of a base film, and then drying the base film coated with the mixture by passing it through a drying furnace of a coating machine, which also induces a reaction. After the coating and drying, the coated and dried base film may be additionally cured at a temperature ranging from room temperature to 6O 0 C for 1 day ⁇ 1 week.
  • a reaction initiator or curing agent such as a metal chelate compound, an isocyanate compound, a melamine compound or an epoxy compound
  • the adhesivity of an adhesive is determined depending on the content ratio of an acrylic/methacrylic copolymer to a reaction initiator.
  • the adhesivity of the adhesive is decreased as the amount of the reaction initiator is increased.
  • the amount of the reaction initiator may be suitably adjusted in order to obtain an adhesive having desired adhesivity.
  • the trifunctional cross-linking agent enables the adhesive to have a gel fraction of 92% through a sufficiently complete cross-linking reaction and enables the adhesive to exhibit a peeling force of 40 gf/inch at a rate of 2000 mm/min, as the adhesivity of the adhesive is sufficiently decreased compared to the initial adhesivity thereof.
  • the adhesive becomes hard due to the rapid reaction of the trifunctional curing agent, but becomes poor in toughness.
  • the adhesive prepared using a monofunctional or difunctional curing agent can prevent an adhesive transfer phenomenon caused by scratching.
  • the reason for this is determined to be because the multifunctional curing agent causes a rapid curing reaction, and thus the hardness of an adhesive layer is increased, but the toughness of the adhesive layer is decreased. Now, when the monofunctional or difunctional curing agent is used as a curing agent, the rapid curing reaction is prevented, with the result that the toughness of the adhesive layer is increased, thereby preventing extraneous matter from being locally deposited on the adhesive layer.
  • the amount of a monofunctional isocyanate curing agent used is three times the amount of trifunctional isocyanate curing agent used, and other curing conditions are maintained constant. That is, as described above, when a multifunctional curing agent is used in the preparation of an adhesive composition, the gel fraction of the prepared adhesive is increased, and the contamination of an adherend is prevented, but the adhesive has a compact net structure, rather than a compact linear structure.
  • (meth)acrylic monomers having an alkyl group of 1 to 14 carbon atoms are used as major components of the pressure-sensitive adhesive composition.
  • the alkyl group of 1 to 14 carbon atoms may include methyl, ethyl, n-butyl, s-butyl, t- butyl, iso-butyl, hexyl, 2-ethylhexyl, n-octyl, iso-octyl, n-nonyl, iso-nonyl, n-decyl, iso-decyl, n-dodecyl, n-tridecyl, n-tetradecyl, and the like.
  • the (meth) acrylic monomers having an alkyl group of 1 to 14 carbon atoms may be each independently used or may be used by mixing two or more monomers.
  • (meth)acrylic monomers having a hydroxy group which are copolymerized with the (meth)acrylic monomers having an alkyl group of 1 to 14 carbon atoms, are also used as major components of the pressure-sensitive adhesive composition.
  • the hydroxy group is a functional group acting as an origin of cross-linking, and a (meth)acrylic monomer having the hydroxy group serves to impart cohesion to the pressure-sensitive adhesive by reacting with an isocyanate-based cross-linking agent.
  • Examples of the (meth)acrylic monomers having the hydroxy group may include 2-hydroxyethyl(meth)acrylate,2-hydroxypropyl(meth)acrylate, 4-hydroxybutyl(meth)acrylate, 6-hydroxyhexyl(meth)acrylate, 8-hydroxyoctyl(meth)acrylate, and the like.
  • the (meth)acrylic monomers having the hydroxy group may be independently used or may be used by mixing two or more monomers.
  • a pressure-sensitive adhesive composition of the present invention includes a
  • the (meth)acrylic copolymer serving as an adhesive; and a monofunctional or difunctional isocyanate compound, serving as a cross-linking agent.
  • the (meth)acrylic copolymer may be prepared by copolymerizing 80 ⁇ 99 wt% of (meth)acrylic monomer having an alkyl group of 1 to 14 carbon atoms with 1 - 20 wt% of (meth) acrylic monomer having a hydroxy group.
  • the amount of the (meth)acrylic monomer having a hydroxy group is below 1 wt%, there is a problem in that the pressure-sensitive adhesive is not sufficiently cross-linked, so that the cohesion of the pressure-sensitive adhesive is decreased, thereby the pressure-sensitive adhesive may remain on an adherend, and when the amount thereof is above 20 wt%, there is a problem in that the cohesion of the pressure-sensitive adhesive is excessively decreased, so that the pressure-sensitive adhesive becomes hard, thereby deteriorating workability.
  • polymerizable monomers in order to control the adhesion, peeling performance, cohesion, heat resistance and other physical properties of the pressure- sensitive adhesive, other polymerizable monomers may be used.
  • examples of such polymerizable monomers may include carboxyl group-containing monomers, amide group-containing monomers, epoxy group-containing monomers, aromatic vinyl monomers, alkylene oxide-containing monomers, and the like.
  • the amounts of the polymerizable monomers are not limited as long as the effects of the present invention do not become deteriorated.
  • (meth)acrylic monomer having an alkyl group of 1 to 14 carbon atoms with the (meth)acrylic monomer having a hydroxy group have a weight-average molecular weight of 300,000 ⁇ 3,000, 000.
  • the weight- average molecular weight of the (meth)acrylic copolymer is below 300,000, there is a problem in that the cohesion of the pressure-sensitive adhesive is overly decreased, and thus pressure-sensitive adhesive remains on an adherend even when a weak force is applied thereto.
  • the weight- average molecular weight thereof is above 3,000, 000, there is a problem in that the fluidity of the pressure-sensitive adhesive is decreased, thus deteriorating workability.
  • a cross- linking reaction is performed using a monofunctional or difunctional isocyanate-based cross-linking agent.
  • the monofunctional or difunctional isocyanate-based cross-linking agent is referred to as a compound having two or less isocyanate groups in a single molecule, and its structure is not particularly limited.
  • Examples of the monofunctional or difunctional isocyanate-based cross-linking agent may include tolylene di- isocyanate, xylene diisocyanate, chlorophenylene diisocyanate, hexamethylene di- isocyanate, tetramethylene diisocyanate, isophorone diisocyanate, diphenylmethane diisocyanate, hydrated diphenylmethane diisocyanate, and commonly-known isocyanate compounds.
  • tri or more functional isocyanate-based curing agents be used. These curing agents may be each independently used or may be used by mixing two or more kinds of curing agents.
  • the amount of the isocyanate- based curing agent may be 0.1 ⁇ 20 parts by weight based on 100 parts by weight of the (meth)acrylic copolymer. When the amount of the isocyanate-based curing agent is below 0.1 parts by weight, a curing reaction has a low completion rate, so that the adhesion of the pressure-sensitive adhesive is decreased, and an adherend may be contaminated.
  • the amount of the isocyanate-based curing agent be 0.1 ⁇ 20 parts by weight based on the total amount of the (me th) acrylic copolymer.
  • the pressure-sensitive adhesive composition prepared as above is dried, and is then additionally cured at from room temperature to 6O 0 C for 1 day ⁇ 1 week to exhibit a gel fraction of 85 ⁇ 99%.
  • the gel fraction is below 85%, the cohesion and toughness of the pressure-sensitive adhesive is decreased.
  • the gel fraction is above 99%, even though a pressure-sensitive adhesive having a high cohesion can be prepared using a monofunctional or difunctional curing agent, the cohesion of the pressure-sensitive adhesive is excessively increased, so that the hardness thereof is also excessively increased, with the result that the pressure- sensitive adhesive may be cracked when a force is locally applied thereto.
  • the pressure-sensitive adhesive composition of the present invention can be applied to a base film of optical or general protective films.
  • the base film may be made of polyethyleneterephthalate (PET), polyethylenenaphthalate (PEN), heat-treated polyethyleneterephthalate (PET), polyethylene (PE), polypropylene (PP), ethylene vinyl acetate copolymer (EVA), polyimide, or the like.
  • PET polyethyleneterephthalate
  • PEN polyethylenenaphthalate
  • PET heat-treated polyethyleneterephthalate
  • PET polyethylene
  • PE polypropylene
  • EVA ethylene vinyl acetate copolymer
  • polyimide polyimide
  • the pressure-sensitive adhesive composition of the present invention may be used for functional protective films in which layers other than an adhesive layer are imparted with functionality.
  • the pressure-sensitive adhesive composition may be used for an antistatic protective film, which has been imparted with an antistatic property, before the pressure-sensitive adhesive composition is applied on its surface on which an adhesive layer to be formed, or may be used for protective films, which have been imparted with other properties, such as water repellency, contamination resistance, and the like, on the opposite surface to the surface on which an adhesive layer is to be formed. Since the present invention is a technology for controlling the physical properties of an adhesive layer, it may be used regardless of the functionality imparted to layers other than the adhesive layer.
  • an antistatic agent containing a conductive polymer as an active component may be included in an intermediate layer located between the base film and the adhesive layer, and poly(3,4-ethylenedioxythiophene) may be used as the conductive polymer.
  • the adhesive layer formed from the pressure-sensitive adhesive composition of the present invention can be imparted with various functions.
  • ionic liquids including lithium ionic liquid, and/or alkaline metal salts including a quaternary ammonium metal salt may be mixed with the pressure-sensitive adhesive composition as an antistatic agent.
  • the antistatic agent must be used in a suitable amount because the curing ability and cohesion of the pressure-sensitive adhesive are subject to being decreased, so that the pressure-sensitive adhesive is pressed or scratched by a local impact and is thus detached from an adherend. Further, it is preferred that the antistatic agent be used after its characteristics are evaluated.
  • the protective film manufactured using the pressure-sensitive adhesive composition of the present invention is advantageous in that an adhesive layer of the protective film does not remain on the surface of an adherend at the time of removing the protective film from the adherend even when the protective film is locally pressed or scratched by an external force, and in that an adhesive transfer phenomenon from local pressing or scratching is remarkably improved at the time of removing the protective film, thus greatly decreasing the process loss. Further, the pressure-sensitive adhesive composition of the present invention can be applied to protective films having various functions, such as antistatic properties, and the like. Mode for the Invention
  • the present invention provides a novel peeling performance test method.
  • a protective film having a predetermined width and length is attached to the surface of an adherend using a rubber roller, and then this protective film is detached from the adherend, and simultaneously the force necessary for peeling the protective film from the surface of the adherend is measured.
  • a protective film having a width of 25 mm or 1 inch is chiefly used, and as a result, the unit of adhesion is represented by g /25mm or g /inch.
  • a tool for locally applying a force to the test piece was fabricated.
  • the tool is a metal pin having a shape similar to that of the tip of a ball point pen which is a kind of pencil and has a curvature radius of 300 ⁇ m.
  • an apparatus for applying a constant force to the test piece using the tool was fabricated. When this apparatus is used, the time taken to apply the force to the test piece and the intensity of the force can be controlled.
  • a method of simulating situations in which a force is locally applied to the test piece using this apparatus is performed as follows. First, a test piece (a protective film) is unif oraily attached to the surface of an adherend by applying a uniform force to the entire test piece using a rubber roller. Subsequently, the adherend to which the test piece is attached is placed in the above apparatus, and then desired load is applied to the adherend for a predetermined time (in the present invention, 10 seconds), thereby locally applying a force to the surface of the adherend. This procedure simulates a circumstance in which a force is locally applied to a product to which the protective film has been attached. Subsequently, the test piece is taken out of the apparatus and is then peeled from the adherend. Finally, whether or not the adhesive materials of the protective film remain on the surface of the adherend is determined.
  • a test piece a protective film
  • a metal pin with a sharp point such as the tip of the ball point pen, is used in order to simulate a circumstance in which the test piece is sharply pressed.
  • various types of pressed marks such as longitudinal pressed marks, circular pressed marks, and the like, can be simulated by changing the shape of the tool or varying the curvature radius of the portion of the tool contacting the test piece.
  • the time taken to press the test piece and the force used to test the test piece may alter depending on various factors, such as experimental conditions, kinds of materials used, and the like.
  • a tool made of polymer or ceramic may be used.
  • a voltage of 1000 V was applied to a protective film using a CPM 288, manufactured by Monroe Electronics Corp., and then the time taken to be attenuated to a voltage of 100 V was measured through an FTMS 101C method.
  • the above adhesive and curing agent were mixed with each other in a predetermined mixing ratio to form a mixture, stirred, and then applied on a base film. Subsequently, the base film coated with the mixture was dried at 8O 0 C for 2 minutes to a coating thickness of 10 ⁇ 20 ⁇ m, and then the dried base film coated with the above mixture was aged at a temperature of 25 0 C and a relative humidity of 50% for 7 days.
  • Example 7 was conducted using the same method as in Example 3, except that the mixture has a coating thickness of 20 ⁇ m.
  • the physical properties of the polyester film coated with the mixture are shown in Table 1. [102] [103] Table 1
  • An antistatic agent was prepared by mixing 4 g of LiN(CF SO ) with 6 g of polyethyleneglycol dilaurate at a temperature of 7O 0 C for 6 hours.
  • 0.1 g of the prepared antistatic agent was mixed with 20 g of SK1499M, manufactured by Soken Corp., as an acrylate adhesive, and 0.16 g of monofunctional isocyanate, as a curing agent, to form a mixture, the mixture was stirred, and then the stirred mixture was applied on a polyester film having a thickness of 38 ⁇ m to a coating thickness of 10 ⁇ m using the above coating method.
  • the physical properties of the polyester film coated with the mixture are shown in Table 2.
  • Example 9 was conducted using the same method as in Example 8, except that 0.5 g of the prepared antistatic agent was added.
  • the physical properties of the polyester film coated with the mixture are shown in Table 2.
  • Example 10> Before the coating composition of Example 1 was applied on the polyester film, an antistatic composition including a conductive polymer as a main component (refer to Korean Patent Registration No.
  • Example 11 was conducted using the same method as in Example 10, except that the coating composition of Example 9 was applied on the polyester film instead of the coating composition of Example 1.
  • the physical properties of the polyester film coated with the mixture are shown in Table 2.
  • the pressure-sensitive adhesive composition of the present invention is used to manufacture protective films for various displays, such as polarizing films, mobile phone screens, etc., or surface protection products.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

La présente invention concerne une composition adhésive autocollante pour un film de protection, servant à empêcher un phénomène lors duquel un adhésif est transféré sur un support par pression ou grattage local(e), comportant: un copolymère (méth)acrylique, en tant d'adhésif ; et un composé isocyanate monofonctionnel ou bifonctionnel, en tant qu'agent de réticulation. Le film de protection fabriqué au moyen de la composition adhésive autocollante selon la présente invention est avantageux en ce qu'une couche adhésive du film de protection ne reste pas à la surface d'un support lors du retrait du film de protection du support même lorsque le film de protection a été comprimé ou gratté localement par une force extérieure.
PCT/KR2008/003693 2007-06-27 2008-06-26 Composition adhésive autocollante à caractéristiques de pelage améliorées et films de protection utilisant une telle composition WO2009002110A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020107000374A KR101198929B1 (ko) 2007-06-27 2008-06-26 박리 성능이 개선된 점착제 조성물 및 이를 이용한 보호 필름

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20070063995 2007-06-27
KR10-2007-0063995 2007-06-27

Publications (2)

Publication Number Publication Date
WO2009002110A2 true WO2009002110A2 (fr) 2008-12-31
WO2009002110A3 WO2009002110A3 (fr) 2009-03-19

Family

ID=40186174

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/003693 WO2009002110A2 (fr) 2007-06-27 2008-06-26 Composition adhésive autocollante à caractéristiques de pelage améliorées et films de protection utilisant une telle composition

Country Status (3)

Country Link
KR (1) KR101198929B1 (fr)
TW (1) TW200920806A (fr)
WO (1) WO2009002110A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103937429A (zh) * 2014-04-04 2014-07-23 广东达美新材料有限公司 一种耐高温不黄变高剥离力压敏胶及其制备方法
KR20140095922A (ko) * 2013-01-25 2014-08-04 도레이첨단소재 주식회사 유전 점착필름 및 전자종이용 디스플레이 소자
JP2018104514A (ja) * 2016-12-26 2018-07-05 日本合成化学工業株式会社 粘着剤組成物、およびそれを用いてなる粘着剤、粘着シート、並びに粘着剤層付偏光板

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102494761B1 (ko) * 2017-12-20 2023-02-02 주식회사 케이씨씨글라스 다층 시트 및 이의 제조방법
JP6497476B1 (ja) * 2018-09-20 2019-04-10 東洋インキＳｃホールディングス株式会社 粘着剤および粘着シート
KR102214896B1 (ko) * 2019-10-08 2021-02-15 주식회사 라온티알엠 재박리형 건축용 윈도우 필름용 점착제 조성물 및 이를 포함하는 재박리형 건축용 윈도우 필름

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000026817A (ja) * 1998-07-14 2000-01-25 Teijin Ltd 表面保護フィルム
KR20070041238A (ko) * 2005-10-14 2007-04-18 주식회사 엘지화학 아크릴계 점착제 조성물
KR20070052899A (ko) * 2005-11-18 2007-05-23 장관식 대전방지 박리필름, 이를 이용한 대전방지 점착 박리필름및 그 제조방법
KR20070055363A (ko) * 2005-11-24 2007-05-30 주식회사 엘지화학 아크릴계 점착제 조성물
KR20070065309A (ko) * 2005-09-05 2007-06-22 닛토덴코 가부시키가이샤 점착제 조성물, 점착 시트 및 표면 보호 필름
KR20080078567A (ko) * 2007-02-23 2008-08-27 데이진 듀폰 필름 가부시키가이샤 표면 보호용 점착 필름

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11256115A (ja) * 1998-03-13 1999-09-21 Teijin Ltd 表面保護フィルム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000026817A (ja) * 1998-07-14 2000-01-25 Teijin Ltd 表面保護フィルム
KR20070065309A (ko) * 2005-09-05 2007-06-22 닛토덴코 가부시키가이샤 점착제 조성물, 점착 시트 및 표면 보호 필름
KR20070041238A (ko) * 2005-10-14 2007-04-18 주식회사 엘지화학 아크릴계 점착제 조성물
KR20070052899A (ko) * 2005-11-18 2007-05-23 장관식 대전방지 박리필름, 이를 이용한 대전방지 점착 박리필름및 그 제조방법
KR20070055363A (ko) * 2005-11-24 2007-05-30 주식회사 엘지화학 아크릴계 점착제 조성물
KR20080078567A (ko) * 2007-02-23 2008-08-27 데이진 듀폰 필름 가부시키가이샤 표면 보호용 점착 필름

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140095922A (ko) * 2013-01-25 2014-08-04 도레이첨단소재 주식회사 유전 점착필름 및 전자종이용 디스플레이 소자
KR101989869B1 (ko) 2013-01-25 2019-06-17 도레이첨단소재 주식회사 유전 점착필름 및 전자종이용 디스플레이 소자
CN103937429A (zh) * 2014-04-04 2014-07-23 广东达美新材料有限公司 一种耐高温不黄变高剥离力压敏胶及其制备方法
JP2018104514A (ja) * 2016-12-26 2018-07-05 日本合成化学工業株式会社 粘着剤組成物、およびそれを用いてなる粘着剤、粘着シート、並びに粘着剤層付偏光板

Also Published As

Publication number Publication date
TW200920806A (en) 2009-05-16
KR20100032885A (ko) 2010-03-26
KR101198929B1 (ko) 2012-11-07
WO2009002110A3 (fr) 2009-03-19

Similar Documents

Publication Publication Date Title
CN113528053B (zh) 粘合带、电子设备部件固定用粘合带和光学用透明粘合带
KR102004167B1 (ko) 점착제 조성물 및 점착 필름
JP5015648B2 (ja) 光学用粘着剤組成物および光学機能性フィルム
KR101962116B1 (ko) 점착제 조성물 및 점착 필름
EP2048214B1 (fr) Composition adhésive sensible à la pression pour filtre pdp avant et utilisation
KR101510470B1 (ko) 점착제 조성물 및 이를 이용한 점착 제품, 디스플레이
KR102140459B1 (ko) 점착제층 및 점착 필름
KR101981503B1 (ko) 표면 보호 필름용 박리 필름
WO2009002110A2 (fr) Composition adhésive autocollante à caractéristiques de pelage améliorées et films de protection utilisant une telle composition
JP6015990B2 (ja) 光学フィルム用感圧粘着剤組成物
JP4753205B2 (ja) 粘着剤組成物およびそれを塗布してなる表面保護フィルム
CN107922808B (zh) 粘合剂组合物、粘合片以及具备该粘合片的触控面板和显示装置
WO2004099334A1 (fr) Adhesif autocollant pour element optique et stratifie
KR101985178B1 (ko) 표면 보호 필름 및 그것이 첩합된 광학 부품
KR20180029357A (ko) 광학 투명 점착제 조성물, 그를 포함하는 광학 투명 점착 필름 및 평판표시장치
KR20110082333A (ko) 편광판 및 이를 포함하는 액정표시장치
KR102609849B1 (ko) 점착 시트
KR20180034973A (ko) 광학 투명 점착제 조성물, 그를 포함하는 광학 투명 점착 필름 및 평판표시장치
KR102313741B1 (ko) 점착 필름
WO2014077115A1 (fr) Adhésif doté de propriétés de pelage facile, et matériau adhésif doté de propriétés de pelage facile mettant en œuvre celui-ci
CN112400002A (zh) 粘合剂组合物和粘合带
KR101785380B1 (ko) 점착필름
KR20190025413A (ko) 점착 시트
JP7065229B2 (ja) 粘着剤層、及び粘着フィルム
CN112625622B (zh) 粘合剂组合物、粘合层与粘合膜

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08778385

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20107000374

Country of ref document: KR

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 08778385

Country of ref document: EP

Kind code of ref document: A2