WO2020209450A1 - Film de libération contenant un groupe fluoré - Google Patents

Film de libération contenant un groupe fluoré Download PDF

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Publication number
WO2020209450A1
WO2020209450A1 PCT/KR2019/010486 KR2019010486W WO2020209450A1 WO 2020209450 A1 WO2020209450 A1 WO 2020209450A1 KR 2019010486 W KR2019010486 W KR 2019010486W WO 2020209450 A1 WO2020209450 A1 WO 2020209450A1
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group
fluorine
release
release film
carbon atoms
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PCT/KR2019/010486
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English (en)
Korean (ko)
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윤종욱
우혜미
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도레이첨단소재 주식회사
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Priority to CN201980055353.2A priority Critical patent/CN112601791B/zh
Publication of WO2020209450A1 publication Critical patent/WO2020209450A1/fr

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    • 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
    • C09J7/201—Adhesives in the form of films or foils characterised by their carriers characterised by the release coating composition on the carrier layer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
    • 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
    • C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/255—Polyesters
    • 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
    • C09J2301/312—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 parameters being the characterizing feature

Definitions

  • the present invention relates to a release film containing a fluorine group, and more particularly, on at least one surface of a polyester base film, fluorine in which a release coating solution containing an organo polysiloxane containing a fluorine group and an organo polysiloxane containing no fluorine group is applied. It relates to a group-containing release film.
  • silicone adhesives have advantages such as heat resistance, friction resistance, and flexibility, and are thus widely applied to flexible displays.
  • it is used in a wide range of applications because of its excellent electrical insulation, low toxicity and cold resistance.
  • a release film having excellent peelability is required.
  • a film coated with a release agent containing a fluorine-based resin is commonly used as a release film for use with a silicone pressure-sensitive adhesive.
  • the release agent containing fluorine-based resin used as a release agent has low surface energy and is not compatible with general organic oils, it may cause coating defects such as pinhole defects.
  • a fluorine-based solvent must be used when diluting or coating the coating solution.
  • it since it is very volatile, it is difficult to keep the coating thickness constant when coating the film, and thus, staining of the coating layer due to poor leveling during coating, and variations in peel force due to variations in coating thickness may occur. .
  • fluorine-based solvents and releasing agents containing fluorine-based resins are tens of times more expensive than general organic solvents and silicone-based releasing agents, they have various disadvantages in terms of productivity. Despite the excellent properties of silicone-based adhesives, these disadvantages of the release film The amount of usage is not increasing exponentially.
  • Patent Document 1 Japanese Patent Laid-Open Publication No. Hei 10-147758
  • the present invention was conceived to solve the above problems and to meet the conventional requirements, and the object of the present invention is to improve the coating property at the same time excellent peelability, so that the appearance characteristics of the release layer are excellent, and pinholes generated during coating. It is intended to provide a release film containing a fluorine group that can reduce the number of defects in the product and improve the cost-effectiveness ratio of the product.
  • the object includes a base film and a release layer positioned on at least one side of the base film, wherein the release layer comprises organo polysiloxane (A) containing a fluoro group and organo polysiloxane (B) containing no fluoro group. It is a cured layer of the included release coating liquid, and the release layer is achieved by a fluorine group-containing release film in which the fluorine atom/silicon atom content ratio decreases from the surface to the core.
  • the release coating liquid is characterized in that it further comprises a hydroelectric polysiloxane.
  • the organopolysiloxane (A) containing a fluoro group is characterized in that it contains at least one fluorine-containing substituent of at least one of an alkenyl group having 2 to 10 carbon atoms and a fluoroalkyl group or a fluoroether group per molecule. do.
  • the organo polysiloxane (A) containing a fluoro group has the structure of the following formula (1),
  • Ra is a monovalent hydrocarbon group excluding an aliphatic unsaturated group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms
  • Rb is a monovalent hydrocarbon group excluding an aliphatic unsaturated group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms Or a hydrogen group
  • Rc is a fluoroalkyl group or a fluoroether group containing at least one of at least one fluorinated substituent, a monovalent hydrocarbon group excluding an aliphatic unsaturated group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, and At least one type of hydrogen group is included, and each of X, Y, and Z is an integer of 1 or more.
  • the fluoroalkyl group has the structure of the following formula (2),
  • n is an integer of 1 to 8
  • m is an integer of 1 to 5.
  • the fluoroether group has the structure of the following formula (3),
  • p is an integer of 1 to 5
  • q is an integer of 0 or 1
  • r is an integer of 0 to 2
  • m is an integer of 1 to 5
  • X is an oxygen atom or a single bond.
  • the organopolysiloxane (B) containing no fluoro group is characterized in that it contains an alkyl group or an alkenyl group having 2 to 10 carbon atoms in one molecule.
  • the organo polysiloxane (B) that does not contain a fluoro group has the structure of the following formula (4),
  • Ra is a monovalent hydrocarbon group excluding an aliphatic unsaturated group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms
  • Rb is a monovalent hydrocarbon group excluding an aliphatic unsaturated group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms Or a hydrogen group
  • X and Y are each an integer of 1 or more.
  • the base film is a polyester base film, which is characterized in that it is polyethylene terephthalate (PET) or polyethylene-2,6-nathalenedicarboxylate (PEN).
  • PET polyethylene terephthalate
  • PEN polyethylene-2,6-nathalenedicarboxylate
  • the organo polysiloxane (B) containing no fluoro group is characterized in that it contains 10 parts by weight to 900 parts by weight based on 100 parts by weight of the organo polysiloxane (A) containing a fluoro group.
  • the hydroelectricity bonded to the silicon atom of the hydroelectric polysiloxane is characterized in that it contains 1.0 to 3.0 hydroelectricity with respect to one total alkenyl group of the organopolysiloxane (A, B).
  • the organopolysiloxane (A) and the organopolysiloxane (B) of the release layer are characterized in that they contain at least one form of addition reaction type, condensation reaction type and ultraviolet curing type siloxane resin.
  • the surface of the release layer is characterized in that it contains 80 Atomic% or more of fluorine atoms relative to 100 Atomic% of silicon atoms as a result of XPS analysis.
  • the deep portion of the release layer is characterized in that it contains less than 80 Atomic% of fluorine atoms relative to 100 Atomic% of silicon atoms as a result of XPS analysis.
  • the thickness after drying of the release layer is characterized in that 0.03 to 2.0 ⁇ m.
  • the release film is characterized in that the peeling force between the release layer and the silicone adhesive is 0.5gf/25mm to 20 gf/25mm at a peeling angle of 180° and a peeling speed of 0.3mpm.
  • the release film is characterized in that the residual adhesion rate is 85% or more.
  • the release layer is characterized in that the number of pinholes is 2 / A4 size or less.
  • the present invention it is possible to dilute and apply the coating solution without using a fluorine-based solvent in the release coating solution, so that the coating property is improved, the appearance characteristics of the release layer are improved, and the number of defects such as pinholes generated during coating is reduced. have.
  • the present invention has an effect such as improvement in peelability and peel force deviation by a uniform coating layer.
  • the present invention has effects such as reducing the amount of use of organopolysiloxane containing an expensive fluorine group, and improving the cost-effectiveness ratio of a product since it is possible not to use an expensive fluorine-based solvent.
  • FIG. 1 is a schematic cross-sectional view of a release film containing a fluorine group according to an embodiment of the present invention.
  • copolymer is used to refer to a polymer formed by copolymerization of two or more monomers. Such copolymers include binary copolymers, terpolymers or higher order copolymers.
  • FIG. 1 is a schematic cross-sectional view of a release film containing a fluorine group according to a preferred embodiment of the present invention.
  • a fluorine group-containing release film 100 includes a base film 10 and a release layer 20 positioned on at least one side of the base film, and a release layer ( 20) is a cured layer of a release coating solution containing an organo polysiloxane (A) containing a fluoro group and an organo polysiloxane (B) containing no fluoro group.
  • organo polysiloxane containing fluorine group on at least one side of polyester base film and organo polysiloxane containing no fluorine group By applying a release coating solution including a bar to provide a release film having excellent release characteristics and coating appearance characteristics and improved cost-effectiveness, each component will be described in detail below.
  • the base film is a polyester base film, and the polyester resin used therein may use a known base film commonly used in the field of silicone release coating.
  • the polyester base film described in the present invention is the applicant of the present invention.
  • the polyester base film disclosed in Korean Patent Registration No. 10-1268584, Korean Patent Application Publication Nos. 2012-45213 and 2012-99546, which are prior inventions, will be applied.
  • the polyester base film is described without particular limitation, but it should be understood that the polyester base film includes the technical features of the known polyester base film.
  • the base film is described centering on polyester resins such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate, but the base material of the silicone release coating solution of the present invention is not limited to a polyester sheet or film.
  • the polyester resin forming the base film is a polyester obtained by polycondensing an aromatic dicarboxylic acid and an aliphatic glycol
  • the aromatic dicarboxylic acid is isophthalic acid, phthalic acid, terephthalic acid, 2,6-naphthalenedicarboxylic acid, Adipic acid, sebacic acid, oxycarboxylic acid (e.g., P-oxybenzoic acid, etc.) are used, and as aliphatic glycols, ethylene glycol, diethylene glycol, propylene glycol, butanediol, 1,4-cyclohexanedimethanol, Neopentyl glycol or the like can be used.
  • These polyester resins may be used in combination of two or more of a dicarboxylic acid component and a glycol component, and a copolymer containing a third component is also possible.
  • polyester base film uses a uniaxial or biaxially oriented film having high transparency and excellent productivity and processability.
  • Typical polyester resins include polyethylene terephthalate (PET) and polyethylene-2,6-nathalenedicarboxylate (PEN).
  • polyester base film according to the present invention may contain particles to impart excellent rolling characteristics between rolls, and there is no particular limitation on the kind as long as the added particles can exhibit excellent sliding characteristics.
  • particles such as silica, silicon oxide, calcium carbonate, calcium sulfate, calcium phosphate, magnesium carbonate, magnesium phosphate, barium carbonate, kaolin, aluminum oxide, titanium oxide, etc. may be included. Although not limited, preferably, any of spherical, bulk, rod, and plate particles may be used.
  • the hardness, specific gravity and color of the particles are not particularly limited, but two or more types may be used in parallel if necessary, and the average particle diameter of the particles used is preferably 0.1 to 5 ⁇ m, more preferably 0.1 It is used in the range of 2 ⁇ m. At this time, if the average particle diameter of the particles is less than 0.1 ⁇ m, aggregation between particles may occur, resulting in poor dispersion. On the other hand, if the average particle diameter of the particles exceeds 5 ⁇ m, the surface roughness characteristics of the film deteriorate during post-processing. Coating failure may occur.
  • the preferred particle content is 0.01 to 5% by weight, more preferably 0.01 to 3% by weight. If the particle content is less than 0.01% by weight, the slip property of the polyester film may be deteriorated, resulting in poor running characteristics between rolls, and if the content exceeds 5% by weight, the surface smoothness of the film may be deteriorated.
  • the release layer is located on at least one side of the base film, and is a cured layer of a release coating solution containing organo polysiloxane (A) containing a fluorine group and organo polysiloxane (B) containing no fluorine group.
  • A organo polysiloxane
  • B organo polysiloxane
  • organopolysiloxane (A, B) is a main component of the release coating solution, and organopolysiloxane (A) and organopolysiloxane (B) may be present as respective molecules, and are connected by one copolymer. It may be.
  • these can be used in any type of addition reaction type, condensation reaction type, and ultraviolet curing type siloxane resin, and are not specifically limited to any one.
  • the organopolysiloxane (A) containing a fluorine group is at least one fluorine-containing substituent among an alkenyl group having 2 to 10 carbon atoms bonded to a silicon atom in one molecule and a fluoroalkyl group or a fluoroether group bonded to a silicon atom. It is preferable to contain at least one.
  • Ra is a monovalent hydrocarbon group excluding an aliphatic unsaturated group having 1 to 10 carbon atoms, and specifically, an alkyl group, an aryl group, and some or all of the hydrogen atoms of these groups may be a hydroxy group, a cyano group, etc., and an egg having 2 to 10 carbon atoms It may be a kenyl group.
  • Rb is a monovalent hydrocarbon group excluding an aliphatic unsaturated group having 1 to 10 carbon atoms, specifically, an alkyl group, an aryl group, and some or all of the hydrogen atoms of these groups may be a hydroxy group, a cyano group, etc., and an alke having 2 to 10 carbon atoms It may be a nil group or a hydrogen group.
  • Rc is a monovalent hydrocarbon group excluding an aliphatic unsaturated group having 1 to 10 carbon atoms and containing at least one fluorinated substituent in at least one fluoroalkyl group or fluoroether group, specifically an alkyl group, an aryl group, and a hydrogen atom of these groups At least one of a hydroxy group, a hydrocarbon group having a cyano group, an alkenyl group having 2 to 10 carbon atoms, and a hydrogen group may be included.
  • X, Y, and Z are integers of X ⁇ 1, Y ⁇ 1, and Z ⁇ 1, respectively.
  • the fluoroalkyl group of Formula 1 is the following Formula 2, and the fluoroether group has the structure of Formula 3 below.
  • n is an integer of 1 to 8 and m is an integer of 1 to 5.
  • p is an integer of 1 to 5
  • q is an integer of 0 or 1
  • r is an integer of 0 to 2
  • m is an integer of 1 to 5
  • X is an oxygen atom or a single bond.
  • the organopolysiloxane (B) without a fluorine group may have an alkenyl group bonded to a silicon atom in any part of the molecule, preferably contains at least two or more, and,
  • the molecular structure is any one selected from linear or branched, and a structure in which linear and branched coexist is also preferable.
  • Ra is a monovalent hydrocarbon group excluding an aliphatic unsaturated group having 1 to 10 carbon atoms, and specifically, an alkyl group, an aryl group, and some or all of the hydrogen atoms of these groups may be a hydroxy group, a cyano group, etc., and an egg having 2 to 10 carbon atoms It may be a kenyl group.
  • Rb is a monovalent hydrocarbon group excluding an aliphatic unsaturated group having 1 to 10 carbon atoms, and specifically, an alkyl group, an aryl group, and some or all of the hydrogen atoms of these groups may be a hydroxy group, a cyano group, etc. It may be a kenyl group or a hydrogen group.
  • X and Y are integers of X ⁇ 1 and Y ⁇ 1, respectively.
  • the organo polysiloxane (B) is preferably 10 parts by weight to 900 parts by weight based on 100 parts by weight of the organo polysiloxane (A). If the amount is less than 10 parts by weight, the peeling characteristics are not improved and compatibility with non-fluorine-based solvents deteriorates, causing problems in appearance characteristics such as pinholes during coating. If the amount exceeds 900 parts by weight, the fluorine atom on the surface is small, so when bonding with a silicone adhesive. A problem that does not peel off occurs.
  • the surface of the release layer when the surface of the release layer is analyzed with an XPS analyzer, it is preferable that the surface of the release layer contains 80 Atomic% or more of fluorine atoms relative to 100 Atomic% of silicon atoms. If the fluorine atom is less than 80 Atomic%, there is a problem that peeling does not occur when laminated with a silicone adhesive.
  • the deep portion of the release layer contain less than 80 Atomic% of fluorine atoms relative to 100 Atomic% of silicon atoms.
  • “deep” refers to the inside of the release layer in which the surface of the release layer is etched with plasma, and more specifically, the release layer in which the Atomic% of C (carbon) is 60% from the surface of the release layer when analyzed with an XPS analyzer Refers to the point inside the floor.
  • the fluorine atoms in the release layer are more advantageous in releasability as they are located on the surface of the coating layer, when the fluorine atom is 80 Atomic% or more inside the release layer, the specific gravity of fluorine atoms on the surface of the release layer decreases, resulting in a relatively increased content of silicon atoms, resulting in a combination with a silicone adhesive. There is a problem that the peeling does not occur.
  • the release layer has a better peeling property when laminating with a silicon-based adhesive, and when the content of the silicon atom relative to the fluorine atom is high, the peeling property is deteriorated. For this reason, it is preferable in terms of peelability that the content ratio of fluorine atoms to silicon atoms in the release layer tends to decrease from the surface layer to the deep part of the release layer.
  • the release coating solution may further contain a hydroelectric polysiloxane as a curing agent, and any type such as an addition type, a condensation type, and an ultraviolet curing type may be used, and it is not specifically limited to any one.
  • the hydroelectric polysiloxane may be linear, branched, or cyclic, and a mixture thereof may be used.
  • the viscosity or molecular weight is not limited, but the compatibility with the organopolysiloxane (A,B) should be good, and the hydropre-polysiloxane does not have to contain a fluorine group, but preferably the same fluorine as the organopolysiloxane (A). It is more preferable that a group is included.
  • the amount of hydroelectric polysiloxane is preferably in the range of 1.0 to 3.0 hydroelectricity bonded to silicon atoms with respect to one total alkenyl group of the organopolysiloxane (A, B). If the number of hydrogen atoms bonded to silicon atoms for one alkenyl group of organopolysiloxane is less than 1.0, good curability cannot be obtained, and if it exceeds 3.0, there are many hydrogen atoms remaining in the coating layer after curing, causing problems such as changes in peel force over time. There is a possibility of occurrence.
  • the release coating liquid may include a platinum chelate catalyst as a catalyst.
  • the release coating solution is diluted with a solvent so that the total solid content is 0.5 to 10% by weight, and then coated on at least one side of the base film.
  • the solvent used for the release coating solution may be used without limitation of the kind as long as it can be applied on the base film by dispersing the solid content of the present invention. If the total solid content of the release coating liquid is less than 0.5% by weight, a uniform release coating layer is not formed, which may cause problems such as not being properly peeled between the silicone-based adhesive layer and the release film. If it exceeds 10% by weight, the coating liquid The high viscosity of the coating layer may cause unevenness in the leveling of the coating layer, and thus the thickness uniformity of the release layer may deteriorate.
  • the release layer according to the present invention may use a conventionally known coating method such as bar coating, gravure coating, and die coating.
  • the thickness of the release layer after drying is preferably 0.03 to 2.0 ⁇ m. If the thickness of the release layer is less than 0.03 ⁇ m, the coverage of the release layer is not good, so there may be a problem of not being peeled when laminating with a silicone adhesive. If the thickness of the release layer exceeds 2 ⁇ m, problems such as drying may occur. There is a problem that the peeling property is not improved, and the cost-effectiveness ratio is deteriorated.
  • the release film has a peeling force between the release layer and the silicone adhesive is 0.5 gf/25mm to 20 gf/25mm at a 180° peeling angle and a 0.3mpm peeling rate, and preferably 1gf/25mm to 10 gf/25mm to be.
  • the peel force is less than 0.5 gf/25mm, the adhesion between the release layer and the silicone adhesive may deteriorate, resulting in a problem of lifting the laminated interface such as tunneling, and if the peeling force exceeds 20 gf/25mm, the silicone adhesive It may not be properly peeled off, which may cause problems in the process.
  • the release film has a residual adhesion ratio of 85% or more. If the residual adhesive rate is less than 85%, the release agent may be transferred to the adhesive layer due to insufficient curing of the release layer, and the adhesive properties of the adhesive may deteriorate.
  • the number of pinholes in the release layer is 2/A4 size or less.
  • a pinhole defect may occur, and for example, transfer marks and peeling defects of the same type may occur on the adhesive layer.
  • organo polysiloxane (A, Dow Chemical, Q2-7785) containing a fluoro group in a polyester film (Toray Advanced Materials, XD500P-30 ⁇ m), organopolysiloxane (B , Shin-Etsu Silicone Co., KS-847H) 100 parts by weight, Hydrogen polysiloxane (manufactured by Dow Chemical, Q2-7560) 3 parts by weight, platinum chelate catalyst (manufactured by Dow Chemical, SYL-OFF 4000) 500 ppm in a heptane solution It was diluted to prepare and apply a release coating solution having a total solid content of 6% by weight. After coating, heat treatment was performed in a hot air dryer at 150° C. for 60 seconds to form a release layer having a thickness of 0.5 ⁇ m to prepare a release film.
  • A Dow Chemical, Q2-7785
  • B Shin-Etsu Silicone Co., KS-847H
  • Hydrogen polysiloxane
  • Example 1 a release film was prepared in the same manner as in Example 1, except that 10 parts by weight of organopolysiloxane (B, manufactured by Shin-Etsu Silicone, KS-847H) was used.
  • organopolysiloxane B, manufactured by Shin-Etsu Silicone, KS-847H
  • Example 1 a release film was prepared in the same manner as in Example 1, except that 500 parts by weight of organopolysiloxane (B, manufactured by Shin-Etsu Silicone, KS-847H) was used.
  • organopolysiloxane B, manufactured by Shin-Etsu Silicone, KS-847H
  • Example 1 a release film was prepared in the same manner as in Example 1, except that 900 parts by weight of organo polysiloxane (B, manufactured by Dow Chemical, LTC-750A) was used.
  • organo polysiloxane B, manufactured by Dow Chemical, LTC-750A
  • a release film was prepared in the same manner as in Example 1, except that a release coating solution having a total solid content of 8% by weight was prepared in Example 1 to form a release layer having a thickness of 1.0 ⁇ m.
  • a release film was prepared in the same manner as in Example 1, except that a release coating solution having a total solid content of 10% by weight was prepared in Example 1 to form a release layer having a thickness of 1.8 ⁇ m.
  • a release film was prepared in the same manner as in Example 1, except that the organo polysiloxane (B) was not used in Example 1.
  • Example 1 a release film was prepared in the same manner as in Example 1, except that 1,250 parts by weight of organo polysiloxane (B, manufactured by Shin-Etsu Silicone, KS-847H) was used.
  • organo polysiloxane B, manufactured by Shin-Etsu Silicone, KS-847H
  • a release film was prepared in the same manner as in Example 1, except that a release layer having a thickness of 0.02 ⁇ m was formed in Example 1.
  • a release film was prepared in the same manner as in Example 1, except that a release coating solution having a total solid content of 15% by weight was prepared in Example 1 to form a release layer having a thickness of 2.5 ⁇ m.
  • the surface of the release film prepared in Examples and Comparative Examples was analyzed by using an XPS analyzer (ThermoFisher company: model name K-ALPHA) to an analysis area (Spot size) of 400 ⁇ m to determine the composition of Si, F, C, and O atoms.
  • the analysis was expressed as Atomic %, and the results are shown in Table 1 as follows.
  • the surface of the coating layer of the release film prepared in Examples and Comparative Examples was subjected to Ar plasma treatment for 30 seconds under the condition of Ion Energy 3000eV to etch the surface of the coating layer, and then the above 1-1.
  • XPS analysis was performed under the same conditions as the surface analysis of the coating layer, and plasma treatment and XPS analysis were repeated until a layer with an Atomic% of C (carbon) of 80% or more was analyzed.
  • the point at which the Atomic% of C (carbon) is 60% from the surface of the release layer is expressed as a deep part, and the XPS analysis results in the deep part are shown in Table 1 below.
  • Peel force unit is gf/25mm and the measured value is measured 5 times to calculate the average value
  • the release films prepared in Examples and Comparative Examples were prepared in A4 size, placed on an evaluation plate with a black bottom, and the number of pinholes of 300 ⁇ m or more was recorded under a fluorescent lamp.
  • the release films prepared in Examples 1 to 6 according to the present invention have excellent releasability to silicone-based adhesives and excellent coating appearance characteristics.
  • the composition of the organopolysiloxane of the release layer is not suitable (Comparative Examples 1 and 2), or the coating thickness of the release layer is not optimized (Comparative Examples 3 and 4), the coating appearance characteristics deteriorate and the peeling characteristics are poor. It can be seen that it is settling.
  • the present invention provides a release film comprising a release layer positioned by applying a release coating solution including an organo polysiloxane containing a fluorine group and an organo polysiloxane containing no fluorine group on at least one surface of a base film, It is possible to dilute and coat the coating solution without using a fluorine-based solvent, so that workability is improved, and uniform coating is possible, so that the peelability and deviation of the peel force can be improved.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un film de libération contenant un groupe fluoré. La présente invention peut fournir un film de libération contenant un groupe fluoré qui présente une aptitude au pelage supérieure, est excellent en termes de caractéristiques d'aspect de sa couche de libération en raison de propriétés de revêtement améliorées, peut réduire le nombre de défauts, tels que des trous d'épingle, se produisant pendant le revêtement et peut améliorer l'efficacité par rapport au coût d'un produit.
PCT/KR2019/010486 2019-04-11 2019-08-19 Film de libération contenant un groupe fluoré WO2020209450A1 (fr)

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CN201980055353.2A CN112601791B (zh) 2019-04-11 2019-08-19 含有氟基团的离型膜

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KR1020190042560A KR102054615B1 (ko) 2019-04-11 2019-04-11 불소기 함유 이형 필름
KR10-2019-0042560 2019-04-11

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CN115397939A (zh) * 2021-03-05 2022-11-25 东丽尖端素材株式会社 离型膜
CN116120614A (zh) * 2022-10-14 2023-05-16 山东东岳高分子材料有限公司 一种超轻氟素离型膜

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KR102390420B1 (ko) * 2020-03-27 2022-04-25 도레이첨단소재 주식회사 이형필름 및 이의 제조방법
KR102550751B1 (ko) * 2021-02-10 2023-07-03 도레이첨단소재 주식회사 표면에너지 조절용 유무기 입자, 이를 포함하는 이형필름, 및 상기 표면에너지 조절용 유무기 입자의 제조방법
KR102533249B1 (ko) * 2021-07-13 2023-05-16 주식회사 대성메디칼 침대시트 커버 및 그 공급장치
CN113702282A (zh) * 2021-08-26 2021-11-26 江苏皇冠新材料科技有限公司 一种氟素离型膜的检测方法
KR102553899B1 (ko) * 2022-03-08 2023-07-07 도레이첨단소재 주식회사 불소기 함유 이형필름 및 이의 제조방법
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KR102633749B1 (ko) * 2022-05-03 2024-02-05 도레이첨단소재 주식회사 이형필름 및 이의 제조방법
CN115894931B (zh) * 2022-09-01 2023-10-10 江立鼎 一种含氟氢硅油及其制备方法
KR102648290B1 (ko) * 2022-09-14 2024-03-18 (주)케이에프엠 이형 필름, 이의 제조방법 및 이를 이용한 전자 장치의 제조방법

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CN116120614A (zh) * 2022-10-14 2023-05-16 山东东岳高分子材料有限公司 一种超轻氟素离型膜
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KR102054615B1 (ko) 2019-12-10
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