Release coating composition

Abstract

The present disclosure relates to release coating compositions. Compared to conventional silicone-based release coating compositions, release coating compositions according to aspects of the present disclosure can achieve a wide range of release forces when fabricated into release films and can exhibit excellent stability over time.

Description

Technical Field

[0001] This disclosure relates to water-based release coating compositions. Background Technology

[0002] Release films are typically used as protective films to protect adhesive components from atmospheric contaminants or unwanted adhesions, and are usually constructed in which a release layer is formed on a polyester base film.

[0003] In addition, release films are typically attached as protective films to adhesive films or tapes to prevent unwanted adhesion or contamination by dust and other foreign substances before the use of adhesives. Alternatively, release films are used to prevent molds and molded products from adhering during hot-press molding processes (e.g., printed circuit boards and in-mold forming), or as coating materials for applying various resin materials (e.g., ceramic slurries) to the release surface of the release film, and as intermediates for lamination to protect various resin layers coated on other materials. In particular, release films serve as carrier films for uniformly and thinly applying ceramic slurries onto green sheets, which are components of multilayer ceramic capacitors (MLCCs). MLCCs are a class of capacitors used to store or stabilize current and are widely used in portable electronic devices due to their small size and large capacitance. In particular, demand has increased dramatically due to the recent surge in smartphones and tablet PCs. These MLCCs are constructed by alternately stacking green sheets and internal metal electrodes into dozens or hundreds of layers and then connecting external electrodes, and their sizes range from less than 1 mm to several nm.

[0004] The green sheet used in MLCCs is formed by uniformly applying a ceramic slurry onto a carrier film, which serves as a support, and then sintering it. The carrier film used for the green sheet is a biaxially stretched polyester film, which possesses excellent mechanical strength, dimensional stability, heat resistance, and cost competitiveness. A release film is prepared by applying a polymeric silicone release layer to one side of the biaxially stretched polyester film.

[0005] Recently, with the trend towards miniaturization and higher capacity in MLCCs, there is a need to make the green sheet thinner and stack more layers of ceramic slurry. However, if the release film used to manufacture MLCCs has too low a peel force, the ceramic slurry may separate from the release film prematurely. Conversely, if the release film has too high a peel force, cracks or breaks may occur in the green sheet when the release film is removed. Therefore, it is particularly necessary for the release film used for MLCCs to have the property that the film can be peeled off by an appropriate peel force.

[0006] Furthermore, if the organic solvents used in the manufacture of the ceramic slurry do not evaporate sufficiently and remain in the release layer, orange peel-like stains appear on the surface of the green sheet. This problem can be attributed to a roughness factor and can also occur when the solvent of the ceramic slurry remains in the release layer due to its low solvent resistance. Therefore, improvements to the release film are necessary. Preventing such green sheet defects in advance is related to improved MLCC reliability; therefore, the function of the release film in MLCC manufacturing is crucial. Summary of the Invention

[0007] This disclosure provides techniques for use in release coating compositions. Specifically, the release coating compositions can be used in the manufacture of release films.

[0008] This disclosure aims to provide release coating compositions that can achieve a wide range of peel strength.

[0009] Furthermore, this disclosure aims to provide a release coating composition comprising a silicone emulsion and capable of curing in an aqueous system at low temperatures.

[0010] According to one aspect, this disclosure provides release coating compositions.

[0011] In one respect, the release coating composition may be a water-based release coating composition.

[0012] In one aspect, the water-based release coating composition may be a composition that can be cured at a temperature of 150°C or lower, and may contain: an organosilicon emulsion component (A) comprising polydimethylsiloxane (PDMS); a component (B) comprising two or more functional groups in a single molecule that can undergo a condensation reaction with said organosilicon emulsion component; and an acid catalyst.

[0013] In one aspect, component (B) can form a Si-ORN bond structure (where R is an alkyl group having 1 to 4 carbons) through a condensation reaction of the organosilicon emulsion component.

[0014] In one aspect, the functional group contained in the component (B) may be an amine group or an amine-derived functional group.

[0015] In one aspect, the component (B) may be a melamine component, which is a melamine compound of formula 1, its oligomers, its polymers, or a combination thereof.

[0016] [Chemical Formula 1]

[0017]

[0018] (Where, X represents a hydrogen atom, -CH2OH, or -CH2-OR, and may be the same or different. R represents an alkyl group having 1 to 8 carbon atoms, and may be the same or different. At least one X is -CH2-O-CH3.)

[0019] In one aspect, the acid catalyst may be selected from hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, oxalic acid, acetic acid, formic acid, methanesulfonic acid, trifluoromethanesulfonic acid, isoprene sulfonic acid, camphor sulfonic acid, hexane sulfonic acid, octyl sulfonic acid, nonyl sulfonic acid, decyl sulfonic acid, hexadecane sulfonic acid, dinonylnaphthalene sulfonic acid, dinonylnaphthalene disulfonic acid, benzene sulfonic acid, alkylbenzene sulfonic acid, p-toluene sulfonic acid, melamine ZnI2, melamine trisulfonic acid (MTSA), cumene sulfonic acid, dodecylbenzene sulfonic acid, naphthalene sulfonic acid, nonylnaphthalene sulfonic acid, methyl phosphate, ethyl phosphate, propyl phosphate, isopropyl phosphate, butyl phosphate, butoxyethyl phosphate, octyl phosphate, 2- phosphate Ethylhexyl phosphate, decyl phosphate, lauryl phosphate, stearyl phosphate, oleic acid phosphate, behenyl phosphate, phenyl phosphate, nonylphenyl phosphate, cyclohexyl phosphate, phenoxyethyl phosphate, alkoxy polyethylene glycol phosphate, bisphenol A phosphate, dimethyl phosphate, diethyl phosphate, dipropyl phosphate, diisopropyl phosphate, dibutyl phosphate, dioctyl phosphate, di-2-ethylhexyl phosphate, dilauryl phosphate, distearate phosphate, diphenyl phosphate, dinonylphenyl phosphate, sulfonium salt, benzothiazolium salt, ammonium salt, and phosphonium salt.

[0020] In one aspect, the weight ratio of the component (B) to the acid catalyst may be 100:5 to 100:30, 100:10 to 100:20 or 100:10 to 100:15.

[0021] In one aspect, based on the total weight of the composition, the water-based release coating composition may contain 0.2% to 1.0% by weight and 0.02% to 9% by weight of the component (B) and the silicone emulsion, respectively.

[0022] In one aspect, the weight ratio of component (B) to the silicone emulsion may be from 100:10 to 100:900 based on the solids content.

[0023] In one aspect, the water-based release coating composition may further comprise at least one of an antistatic agent, a conductivity enhancer, a pH adjuster, and an antifouling agent.

[0024] In one aspect, the antistatic agent may be at least one selected from PEDOT, PEDOT:PSS, polyaniline, polypyrrole, quaternary ammonium salts, sulfonates, and phosphates.

[0025] In one aspect, the pH adjuster may be at least one selected from sodium hydroxide, potassium hydroxide, calcium hydroxide, and ammonia.

[0026] In one aspect, based on the total weight of the composition, the water-based release coating composition may contain 0.1% to 30% by weight of an antistatic agent, 0.01% to 0.3% by weight of a pH adjuster, or 0.1% to 0.3% by weight of an antifouling agent.

[0027] In one aspect, the water-based coating composition may comprise water or a combination of water and an organic solvent, wherein the water and the organic solvent may be combined in a weight ratio of 50:50 or higher, 60:40 or higher, 70:30 or higher, 80:20 or higher, 90:10 or higher, 95:5 or higher, or 99:1 or higher.

[0028] In one aspect, the water-based coating composition can be used to manufacture release films for protective films in the form of adhesive or adhesive films or tapes, release films for hot-press molding processes, coating materials for coating resin materials, release liners to be bonded to protect resin layers coated on other materials, or release films for ceramic green sheet manufacturing processes.

[0029] The release coating compositions according to this disclosure, when manufactured into release films, can achieve a wide range of peel strengths and exhibit excellent stability over time. These effects are even superior to conventional silicone-based release coating compositions.

[0030] Release coating compositions according to aspects of this disclosure can cure in aqueous systems at low temperatures, even when containing silicone emulsions. This effect is even superior to conventional compositions containing silicone emulsions that can only cure at high temperatures. Attached Figure Description

[0031] Figure 1 This is a schematic diagram illustrating the film formation of a conventional silicone release coating composition cured at a low temperature of 150°C or lower and a water-based release coating composition according to an embodiment of the present disclosure.

[0032] Figure 2 The FT-IR spectrum of a release film according to an embodiment of the present disclosure is shown. Detailed Implementation

[0033] The various embodiments described herein are illustrative for the purpose of clarifying the technical concept of this disclosure and are not intended to limit this disclosure to any particular embodiment. The technical concept of this disclosure includes various modifications, equivalents, substitutions, and embodiments selectively combined from all or part of the individual embodiments described herein. Furthermore, the scope of the technical concept of this disclosure is not limited to the various embodiments described below and their detailed descriptions.

[0034] Unless otherwise stated, the terms used herein (including technical or scientific terms) may have the meanings commonly understood by one of ordinary skill in the art to which this disclosure pertains.

[0035] 1. Basement membrane

[0036] In one aspect of this disclosure, any membrane commonly used in the field of release films can be used as a base film (which is a component of the release film) without limitation.

[0037] In one aspect, the base film may be formed of a polyester polymer, but the base film on which the release coating composition is applied is not limited to polyester films. Specific examples of polyester polymers include, but are not limited to, polyethylene terephthalate polymers, polybutylene terephthalate polymers, polyethylene naphthalate polymers, polyphenylene sulfide polymers, polyetheretherketone polymers, polyphthalamide polymers, polyimide polymers, polysulfone polymers, polyethersulfone polymers, polyetherimide polymers, or combinations thereof, but are not limited thereto.

[0038] In one aspect, the polyester polymer can be a polyester obtained by the condensation reaction of an aromatic dicarboxylic acid and an aliphatic diol. In another aspect, the aromatic dicarboxylic acid can be isophthalic acid, phthalic acid, terephthalic acid, 2,6-naphthalenedicarboxylic acid, adipic acid, sebacic acid, hydroxydicarboxylic acid (e.g., p-hydroxybenzoic acid), or combinations thereof, but is not limited thereto. In another aspect, the aliphatic diol can be ethylene glycol, diethylene glycol, propylene glycol, butanediol, 1,4-cyclohexanediol, neopentyl glycol, or combinations thereof, but is not limited thereto.

[0039] In one aspect, two or more types of the aforementioned aromatic dicarboxylic acids and aliphatic diols can be used together in polyester polymers, and copolymers containing a third component can also be used. However, polyethylene terephthalate may be preferred in consideration of heat resistance, chemical resistance, mechanical strength, and cost-effectiveness. In one aspect, the base film may preferably be a biaxially oriented polyethylene terephthalate film.

[0040] In one respect, the thickness of the basement membrane can be from 10 μm to 200 μm, but is not limited to this.

[0041] In one aspect, the release coating composition can be applied to at least one surface of a base film to form a release layer.

[0042] 2. Component (B)

[0043] According to one aspect of this disclosure, the release coating composition uses component (B) as the main chain component of the release layer after curing. The use of component (B) allows for a hard release layer coating due to its high crosslinking density, exceeding the hardness levels typically achieved by conventional silicone-based release coating compositions. This is particularly effective for producing a hard release layer coating in order to adjust the peel force to the desired level in the ceramic green sheet manufacturing process for MLCC production.

[0044] Conventional silicone release coating compositions typically contain only silicone materials, such as silicone emulsions. However, silicone emulsions are challenging to cure at low temperatures and require temperatures above approximately 230°C for effective curing. Therefore, compositions containing only silicone emulsions are difficult to use at temperatures around 150°C. Figure 1 This is a schematic diagram illustrating the formation of films by both a conventional silicone-based release coating composition and a water-based coating composition according to an embodiment of this disclosure, through low-temperature curing at a temperature below 150°C. Reference Figure 1 When used at temperatures below 150°C, conventional silicone release coating compositions exhibit low adhesion to substrate films (e.g., PET films) (see left figure).

[0045] For example, membrane manufacturing processes can be divided into offline and online processes. Offline processes involve unrolling the finished membrane material, applying a coating to it, and then rewinding it to produce a membrane. Online processes involve forming the membrane from a polymer while simultaneously coating it during the tableting stage after polymer extrusion. During offline processes, the maximum drying temperature is approximately 150°C, while online processes can have drying temperatures of approximately 210 to 240°C during the membrane stretching stage. Therefore, non-aqueous solvents (i.e., solvent-based solvents) are typically used for curing at temperatures below 150°C during offline processes.

[0046] However, due to environmental considerations, when the solvent used in the above composition is water-based, curing must occur at a temperature below about 150°C (e.g., below about 130°C). Although emulsions are suitable formulations for use in water, when silicone emulsions are used, there is a problem of difficulty in curing at temperatures below 150°C as described above. Furthermore, even after curing, the tribological properties and adhesion of the release film may decrease. Introducing surfactants to address this problem may inhibit curing.

[0047] The release coating composition according to one aspect of this disclosure, containing a component (B) having two or more functional groups capable of condensation reactions with the silicone emulsion component, can achieve high curing at temperatures below 150°C and exhibits excellent physical properties, such as friction characteristics. This allows for the use of water-based emulsions in offline processes. Reference Figure 1 Component (B) (e.g., melamine component) is used to induce the phase separation curing reaction, allowing the production of films with excellent adhesion and high curing (see right figure).

[0048] In one respect, component (B) can form a Si-ORN bond structure (where R is an alkyl group having 1 to 4 carbon atoms) through an organosilicon emulsion condensation reaction.

[0049] For example, R can be -CH2-, -CH2CH2-, -CH2CH2CH2-, or -CH2CH2CH2CH2-.

[0050] In one respect, the functional group contained in component (B) may be an amine group or an amine derivative functional group.

[0051] In one respect, component (B) is not limited as long as it has two or more functional groups within a single molecule capable of undergoing a condensation reaction with the silicone emulsion component. Typically, component (B) can be a melamine component. In particular, component (B) can be an alkyl etherified melamine compound obtained by reacting melamine with formaldehyde, followed by reacting the resulting hydroxymethyl melamine with an alcohol having a suitable carbon atom in the presence of an acidic catalyst.

[0052] In one respect, component (B) may represent a melamine compound having the structure of chemical formula 1, its oligomers, its polymers, and / or combinations thereof.

[0053] [Chemical Formula 1]

[0054]

[0055] In this context, X represents a hydrogen atom, -CH2OH, or -CH2-OR, and these can be the same or different. R represents an alkyl group having 1 to 8 carbon atoms, and these can be the same or different. At least one X is -CH2-O-CH3.

[0056] In one respect, X can be entirely -CH2-O-CH3, and the melamine compound can be a fully etherified methylated melamine, a melamine oligomer, and / or a melamine polymer.

[0057] In one respect, a wide variety of commercially available and widely used products can be used as component (B). For example, Cymel 300, Cymel 301, Cymel 303LF, Cymel 350, or Cymel 370N (all products from Allnex) can be used, but are not limited to these. Commercially available products can be used alone or in combination.

[0058] In one aspect, the content of component (B) can be from about 0.2 wt% to about 1.0 wt% based on the total weight of the composition, specifically from about 0.2 wt% to about 0.8 wt%, from about 0.3 wt% to about 0.7 wt%, from about 0.4 wt% to about 0.6 wt%, or from about 0.5 wt% to about 0.6 wt%. If the content of component (B) is less than the minimum value, the desired curing effect, i.e., the effect of maintaining the hardness of the release layer and reducing the peel force between the release film and the green sheet, may be weakened, and the peel force may not be adjustable as needed. Furthermore, if the curing of component (B) is not properly carried out, the stability of the release film may decrease over time. Therefore, it is required that the content of component (B) meets the weight ratio with the acid catalyst mentioned below.

[0059] In one respect, the total acid value of component (B) may be from 390 to 780 mg KOH / g, specifically at least 400 KOH / g, 450 KOH / g, 500 KOH / g, 550 KOH / g, 600 KOH / g, 650 KOH / g, 700 KOH / g or 750 KOH / g, or at most 730 KOH / g, 680 KOH / g, 630 KOH / g, 580 KOH / g, 530 KOH / g, 480 KOH / g or 430 KOH / g, but is not limited thereto.

[0060] 3. Organosilicon emulsion components

[0061] In one aspect of this disclosure, the silicone emulsion component can be used as a binder or peel control agent in a release coating composition. Because of the low molecular weight of the monomer, component (B) forms a dense cross-linked structure and has a high cross-linking density after curing, thereby increasing the hardness of the release layer upon coating. As the hardness of the release layer increases, the peel force of the green sheet decreases. To address this issue, co-curing with a silicone emulsion component containing leaving groups such as Si-CH3 and having soft properties can reduce the hardness of the release layer and increase its flexibility. As described above, the peel force of the release film increases with increasing release layer flexibility. Due to the combination of component (B) and the silicone emulsion component, this disclosure exhibits the effect of achieving a wide range of peel forces, particularly a wide range of 1-day peel forces at room temperature.

[0062] The silicone emulsion component can form a Si-ON bond structure through a condensation reaction with component (B), and the copolymer of component (B) and silicone emulsion component and its structure can increase the flexibility of the release layer and increase its stability over time.

[0063] For example, the melamine component of chemical formula 1 can have up to six functional groups. In this case, the NX2 group in the melamine component can form a Si-ON bond structure through a condensation reaction with the organosilicon emulsion component.

[0064] For typical silicone release films, the peel strength is increased by adding a silicone polymer component. However, if the content of the silicone polymer component exceeds 50% by weight based on the total weight of the composition, serious problems arise with stability over time. Over time, the silicone polymer component that should be present on the surface of the release layer is impregnated into the interior of the release layer. Unlike conventional silicone release films, the release coating composition of this disclosure has a copolymer of component (B) as described above and a silicone emulsion component, forming a cross-linked network structure. Therefore, the peeling groups can be retained without impregnating from the surface of the release layer into the interior, and thus exhibit excellent stability over time.

[0065] In one respect, the silicone emulsion component is not limited, as long as it can form a cross-linked network structure and provide flexibility when combined with component (B). For example, the silicone emulsion component is not particularly limited, but it may not contain branches other than the main chain.

[0066] In one embodiment, the silicone emulsion component may not contain polyalkylene glycols (e.g., polyethylene glycol, PEG).

[0067] In one embodiment, the silicone emulsion component may not contain hydroxyl groups, polyether groups, and polyester groups.

[0068] In one embodiment, the silicone emulsion component may not contain alkenyl groups.

[0069] If a branched silicone emulsion is used, the release properties may be limited to heavy-release tapes (based on TESA 7475 tape exceeding 200g). Therefore, films using this composition can be limited to heavy-release areas, such as MLCCs. However, as previously described, the silicone emulsion component of this disclosure does not contain branched groups, such as polyalkylene glycols, hydroxyl groups, polyether groups, polyester groups, alkenyl groups, etc. Therefore, even when cured using component (B), the surface that forms a release layer with the Si-CH3 component can be treated as when using conventional silicone curing. Therefore, the coating composition can be used in a variety of applications, such as in light-release areas as well as heavy-release areas (e.g., for MLCCs).

[0070] For example, the silicone emulsion component may be polydimethylsiloxane (PDMS), but is not limited to this. For example, the silicone emulsion component may be branched polydimethylsiloxane, but is not limited to this.

[0071] In one embodiment, the Si-Vi to Si-H ratio in the silicone emulsion component can be from 1:1.5 to 1:2.5. For example, the Si-Vi to Si-H ratio in the silicone emulsion component can be from 1:1.6 to 1:2.3. Here, "Si-VI" refers to a silicon-vinyl group bond, and "Si-H" refers to a silicon-hydrogen bond. If the Si-VI:Si-Hi ratio in the silicone emulsion component is less than 1:1.5, the composition may not cure sufficiently and residual adhesion and substrate adhesion may deteriorate. If the Si-VI:Si-Hi ratio in the silicone emulsion component exceeds 1:2.5, and the Si-H content becomes too high, Si-H may react with other components (e.g., hydroxyl groups, etc.), and the peel strength may increase over time, and the stability over time may decrease.

[0072] In one embodiment, the content of the silicone emulsion component may be 0.02 wt% to 9 wt%, 0.02 wt% to 8 wt%, 0.03 wt% to 7 wt%, 0.04 wt% to 6 wt%, or 0.05 wt% to 6 wt%, based on the total weight of the composition. If a silicone emulsion component exceeding the maximum value is used, component (B) may not cure completely, and uncured silicone emulsion component or component (B) may rise to the surface of the release layer, resulting in poor tribological properties of the release film (i.e., the adhesion or stickiness of the release layer to the base film). If the silicone emulsion component is used too little than the minimum value, a network structure cannot be properly formed through the curing reaction, and the required peel strength or aging stability may not be achieved.

[0073] In the embodiments, the organosilicon emulsion component may further comprise a metal catalyst. For example, the metal catalyst may be an alkali metal catalyst, an alkaline earth metal catalyst, or a rare earth metal catalyst, but is not limited thereto. For example, the metal catalyst may be a platinum catalyst, but is not limited thereto.

[0074] In one respect, the weight ratio of component (B) to the silicone emulsion can be from 100:10 to 100:900 based on the solid content, and can be a weight ratio between the upper and lower limits mentioned above.

[0075] 4. Acid catalysts

[0076] In one respect, any acid catalyst can be used without limitation, provided that the crosslinking reaction between the catalytic component (B) or the component (B) and the organosilicon emulsion component is known. Suitable selections can be made from these for use in this disclosure. Examples of acid catalysts include: inorganic acids, such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, etc.; organic acids, such as oxalic acid, acetic acid, formic acid, methanesulfonic acid, trifluoromethanesulfonic acid, isoprene sulfonic acid, camphor sulfonic acid, hexane sulfonic acid, octyl sulfonic acid, nonanyl sulfonic acid, decyl sulfonic acid, hexadecane sulfonic acid, dinonylnaphthalene sulfonic acid, dinonylnaphthalene disulfonic acid, benzene sulfonic acid, alkylbenzene sulfonic acid, p-toluene sulfonic acid, melamine ZnI2, melamine trisulfonic acid (MTSA), cumene sulfonic acid, dodecylbenzene sulfonic acid, naphthalene sulfonic acid, nonylnaphthalene sulfonic acid, methyl phosphate, ethyl phosphate, propyl phosphate, isopropyl phosphate, butyl phosphate, butoxyethyl phosphate, octyl phosphate, 2-ethyl phosphate. Hexyl phosphate, decyl phosphate, lauryl phosphate, stearyl phosphate, oleic acid phosphate, behenyl phosphate, phenyl phosphate, nonylphenyl phosphate, cyclohexyl phosphate, phenoxyethyl phosphate, alkoxy polyethylene glycol phosphate, bisphenol A phosphate, dimethyl phosphate, diethyl phosphate, dipropyl phosphate, diisopropyl phosphate, dibutyl phosphate, dioctyl phosphate, di-2-ethylhexyl phosphate, dilauryl phosphate, distearate phosphate, diphenyl phosphate, dinonylphenyl phosphate, etc.; and thermally generated acid agents, such as sulfonium salts, benzothiazolium salts, ammonium salts, phosphonium salts, etc., but not limited to these. Acid catalyst components can be used alone or in combination.

[0077] In one aspect, the weight ratio of component (B) to the acid catalyst can be 100:5 to 100:30, 100:10 to 100:20, or 100:10 to 100:15, and can fall between the upper and lower limits described above. If the acid catalyst is used at a concentration less than the minimum weight ratio, the curing reaction may not occur properly, and if it is used at a concentration exceeding the maximum value, over-curing may occur. Both of these situations result in poor stability over time. Therefore, to obtain excellent stability over time, it is preferable that the weight ratio of component (B) to the acid catalyst falls within the above range.

[0078] 5. Solvent

[0079] In one aspect, the release coating composition may be a water-based release coating composition. In another aspect, the term "water-based" means an aqueous solution or an aqueous dispersion, and the solvent component of the composition may be water alone or a combination of water and an organic solvent as described below.

[0080] On one hand, since the release coating composition is water-based, the formation of a release layer from it can fundamentally reduce the emission of volatile organic compounds (VOCs) and meet environmental requirements. Furthermore, the release coating composition can be readily used as a mixture with water-based antistatic agents and other water-based additives, and has the advantage of achieving antistatic properties and peelability of the release film as a single-component composition.

[0081] In one aspect, the release coating composition may also contain a water-based solvent. The water-based solvent may be water or a combination of water and an organic solvent. The ratio of water to organic solvent may be 50:50 or higher, 60:40 or higher, 70:30 or higher, 80:20 or higher, 85:15 or higher, 90:10 or higher, 95:5 or higher, or 99:1 or higher by weight.

[0082] In one respect, the organic solvent may be a well-known organic solvent widely used in the field of release films, and is not particularly limited thereto, provided that it is a solvent with good compatibility with water. For example, the organic solvent may be at least one selected from isopropanol, isobutanol, hexane, acetone, ethyl acetate, ethylene glycol, propylene glycol, butanediol, dipropylene glycol, polyethylene glycol, γ-butyrolactone, and combinations thereof, but is not limited thereto.

[0083] 6. Other components

[0084] In one aspect, the release coating composition may include at least one of an antistatic agent, a conductivity enhancer, a pH adjuster, a surfactant, and an antifouling agent, provided that it does not alter the desired properties of the release layer (e.g., delamination strength).

[0085] (1) Antistatic agents and conductivity enhancers

[0086] In one aspect of this disclosure, the antistatic agent not only provides antistatic properties to the release layer but also prevents the adsorption of foreign substances. During the manufacturing process of ceramic green sheets, there are processes involving cutting and trimming. Since the ceramic green sheets are aggregated in bead-like particles, these beads may detach during the cutting process. Therefore, the antistatic properties prevent bead detachment caused by static electricity during the cutting process with the release film, which contributes to the processability of the ceramic green sheet manufacturing.

[0087] In one respect, the antistatic agent can be an antistatic agent widely used in the release film field, but is not particularly limited thereto. For example, the antistatic agent can be selected from, but is not limited to, PEDOT (poly(3,4-ethylenedioxythiophene)), PEDOT:PSS (poly(3,4-ethylenedioxythiophene) polystyrene sulfonate), polyaniline, polypyrrole, quaternary ammonium salts, sulfonates, and phosphates.

[0088] In one aspect, the antistatic agent may be included in the release coating composition in the form of an aqueous solution of the antistatic agent containing a solid portion (the solid content may be 1.0% to 2.0% or 1.5% to 2.0%). In this case, based on the total weight of the composition, the content of the aqueous solution containing the antistatic agent may be from about 0.1% to about 30% by weight, from about 1% to about 25% by weight, or from about 5% to about 20% by weight, and may be present between the upper and lower limits described above. If the content of the antistatic agent exceeds the maximum value, blue spots may appear as a defect in the release layer.

[0089] In one respect, when the above-mentioned content is included, the antistatic agent can provide approximately 10% of the release layer. 4 Up to 10 10 Surface resistance in ohm / sq.

[0090] In one respect, the release coating composition may contain a conductivity enhancer to achieve a desired level of surface resistance, i.e., antistatic properties. Such a conductivity enhancer can assist the performance of the antistatic agent, and the use of a conductivity enhancer allows the desired level of surface resistance of the release layer to be achieved even with less antistatic agent.

[0091] In one aspect, based on the total weight of the composition, the content of the conductivity enhancer can be from about 1% to 20% by weight, from about 1% to 15% by weight, from about 1% to 10% by weight, from about 1% to 8% by weight, from about 1.5% to 8% by weight, from about 1.5% to 6% by weight, from about 2% to 6% by weight, from about 2.5% to 6% by weight, from about 3% to 6% by weight, or from about 4% to 6% by weight. Exceeding the maximum content of the conductivity enhancer will hinder the curing of the release layer and cause the appearance and tribological properties of the release layer to deteriorate to unsatisfactory levels. If the content of the conductivity enhancer is too low, the effect may be insignificant.

[0092] In one respect, any conductivity enhancer can be used without restriction, provided it is widely known in the field of release films. For example, conductivity enhancers can be selected from, but are not limited to, ethylene glycol, dimethyl sulfoxide, N-methyl-2-pyrrolidone, propylene glycol, butanediol, dipropylene glycol dimethyl ether, γ-butyrolactone, sulfolane, dimethyl carbonate, and sorbitol.

[0093] (2) pH adjuster

[0094] In one aspect of this disclosure, a pH adjuster can adjust the pH of the composition to a desired level. The release coating composition may contain an antistatic agent exhibiting acidity. When the composition becomes acidic, neutral or alkaline components such as surfactants or silicone emulsion components may not function properly, thus requiring pH adjustment. If the pH of the entire release coating composition is not adjusted, the stability of the composition itself over time may deteriorate rapidly, and release layer transfer degradation may occur some time after the composition is manufactured. For example, when the release coating composition is prepared and immediately applied to a base film to form a release layer, the appearance is good, but when approximately 4 hours have passed since preparation and the release layer has formed, the appearance of the release layer becomes mottled.

[0095] In one respect, any pH adjuster widely used in the release film field can be used without specific limitations. For example, the pH adjuster can be at least one selected from sodium hydroxide, potassium hydroxide, calcium hydroxide, and ammonia water, but is not limited thereto. The pH adjuster can be an alkaline pH adjuster.

[0096] In one aspect, based on the total weight of the composition, the content of the pH adjuster may be from about 0.05% to 0.3% by weight, from about 0.1% to 0.3% by weight, or from about 0.15% to 0.25% by weight, and may be present between the upper or lower limits described above. If a pH adjuster exceeding the above maximum values ​​is used, it may interfere with the curing of the release layer.

[0097] (3) Surfactants

[0098] In one aspect of this disclosure, surfactants can enhance the wettability of the release coating composition or its spreadability on a substrate film, and can increase the compatibility of component (B) and the silicone emulsion component. In another aspect, when water is used as the sole solvent in the water-based release coating composition, more than two different types of surfactants can be used.

[0099] In one respect, the surfactant can be, but is not limited to, components known in the field of release films capable of reducing surface tension. For example, the surfactant can be a cationic surfactant, anionic surfactant, amphoteric surfactant, nonionic surfactant, silicone surfactant, modified silicone surfactant, fluorinated surfactant, or a combination thereof, but is not limited to.

[0100] In one respect, the cationic surfactant may be, for example, an alkyltrimethylammonium salt, a dialkyldimethylammonium salt, or an alkylbenzyldimethylammonium salt, but is not limited thereto.

[0101] In one respect, the anionic surfactant can be, for example, a fatty acid salt, an alkylbenzene sulfonate, an alkyl sulfonate, an alkyl ether sulfonate, an alkyl polyoxyethylene sulfonate, or a monoalkyl phosphate, but is not limited thereto.

[0102] In one respect, the zwitterionic surfactant can be, for example, alkyl dimethylamine oxide or alkyl carboxybetaine, but is not limited thereto.

[0103] In one respect, the nonionic surfactant may be, for example, fatty acid ethanolamide, polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, sorbitol, dehydrated sorbitol, dehydrated sorbitol fatty acid ester, polyoxyethylene dehydrated sorbitol fatty acid ester, polyoxyethylene fatty acid ester, glycerol fatty acid ester, propylene glycol fatty acid ester, or polyoxyethylene-modified organosilicon, but is not limited thereto.

[0104] In one respect, silicone surfactants can be, for example, polyether-modified silicones or polyglycerol-modified silicones, but are not limited to these. The structures of such modified silicones can be classified into side-chain modified type, two-end modified type (ABA type), one-end modified type (AB type), two-end side-chain modified type, straight-chain block type (ABn type), branched type, etc., and any of these modified silicone structures can be used.

[0105] In one respect, fluorinated surfactants may be at least one selected from fluorine, fluorinated silane compounds, and fluorinated organic compounds, but are not limited thereto.

[0106] In one aspect, based on the total weight of the composition, the amount of surfactant may be from 0.05% to 0.2% by weight, 0.1% to 0.2% by weight, or 0.15% to 0.2% by weight, and may be present in amounts between the upper and lower limits mentioned above.

[0107] (4) Antifouling agent

[0108] In one aspect of this disclosure, the antifouling agent can control the surface energy of the release layer and provide antifouling properties. If the surface energy difference between the base film and the release layer is small, the wettability and peelability of the release layer on the base film may be reduced, but the antifouling agent can prevent this reduction by lowering the surface energy of the release layer. Furthermore, since component (B) in the release coating composition included in this disclosure has almost no slippage (slip properties), the antifouling agent can provide slippage for the release layer.

[0109] In one respect, the antifouling agent may be at least one selected from fluorine, fluorinated silane compounds and fluorinated organic compounds, but is not limited thereto.

[0110] For example, antifouling agents may not include self-emulsifying silicones. Self-emulsifying silicones do not dissolve well in water, making them difficult to use as aqueous agents. Therefore, release coating compositions according to this disclosure may not contain self-emulsifying silicones, but rather silicone emulsion components.

[0111] In one aspect, based on the total weight of the composition, the amount of antifouling agent may be from 0.1% to 0.3% by weight, 0.15% to 0.25% by weight, or 0.2% to 0.25% by weight, and may be present in amounts between the upper and lower limits mentioned above. If the amount of antifouling agent used is below the minimum value mentioned above, there may be problems with residual stains when the release film is peeled off, and there may be problems with green sheet slurry particles remaining in the release layer after the release film is peeled off from the green sheet.

[0112] 7. Physical properties of release films

[0113] In one aspect of this disclosure, a release film can be manufactured by applying a release coating composition to at least one surface of a base film to form a release layer, and the resulting release film can have the following properties. These properties can be measured by the methods described in the experimental examples.

[0114] In one respect, the release film can exhibit an instant tape peel strength of 5 to 32 gf / in, and can exhibit a peel strength within the aforementioned upper and lower limits. For example, it can be greater than or equal to 7 gf / in, 9 gf / in, 11 gf / in, 13 gf / in, 15 gf / in, 17 gf / in, 19 gf / in, 21 gf / in, 23 gf / in, 25 gf / in, 27 gf / in, 29 gf / in or 31 gf / in, or less than or equal to 31 gf / in, 29 gf / in, 27 gf / in, 25 gf / in, 23 gf / in, 21 gf / in, 19 gf / in, 17 gf / in, 15 gf / in, 13 gf / in, 11 gf / in, 9 gf / in or 7 gf / in.

[0115] In one respect, the release film can exhibit a 1-day tape peel strength of 3 to 1000 gf / in at room temperature, and can exhibit peel strength within the aforementioned upper and lower limits. For example, it can be greater than or equal to 10 gf / in, 50 gf / in, 100 gf / in, 200 gf / in, 300 gf / in, 400 gf / in, 500 gf / in, 600 gf / in, 700 gf / in, 800 gf / in or 900 gf / in, or less than or equal to 900 gf / in, 800 gf / in, 700 gf / in, 600 gf / in, 500 gf / in, 400 gf / in, 300 gf / in, 200 gf / in, 100 gf / in, 50 gf / in or 20 gf / in. This release film can meet the peel force requirements for light, heavy, or extra-heavy peel release films and can be widely used in fields requiring such conditions. In one aspect, the release film exhibits a wide range of 1-day tape peel force at room temperature, a property that conventional silicone release films cannot achieve.

[0116] In one respect, the release film can exhibit a green sheet peel force of 1 to 3 gf / in, and can exhibit a peel force within the aforementioned upper and lower limits. The green sheet peel force can be measured by the method described in Experimental Example 1, and can represent the peel force of a green sheet with a thickness of 3 μm.

[0117] Therefore, the release film according to one aspect of this disclosure has the advantage of achieving various levels (grades) of 1-day room temperature tape peel strength, while simultaneously achieving a range of light peel strengths based on immediate tape peel strength or green sheet peel strength. Thus, one type of release film can be used in various industrial sectors requiring different levels of 1-day room temperature tape peel strength, and also in industrial sectors requiring light peel strength based on immediate tape peel strength or green sheet peel strength, making it suitable for a variety of purposes.

[0118] In one aspect, the release film can have a concentration of approximately 0.001 to approximately 0.2 g / m³ in the release layer, as measured using an X-ray fluorescence analyzer. 2 The content of organosilicon.

[0119] In one respect, the release film can exhibit a residual adhesion rate of about 94%, about 95%, or about 96% or higher, and the residual adhesion rate can be measured by the method described in Experimental Example 4. During the release film peeling process, adhesives such as pressure-sensitive adhesives (PSA) or optically clear adhesives (OCA) are typically attached to the release film before peeling. However, during this release film peeling process, a problem may arise where uncured components present in the release layer of the release film are transferred and interfere with the adhesive properties of the adhesive. The release film of this disclosure meets a residual adhesion rate of about 95% or higher, providing the advantage of usability even in fields requiring high standards.

[0120] In one aspect, the release film may have a surface energy of about 19 to about 30 dynes / cm or about 19.5 to about 27 dynes / cm, and may exhibit surface energy values ​​within the aforementioned upper and lower limits. The surface energy of the release layer can be measured by the method described in Experimental Example 5.

[0121] In one respect, release films can have a residual amount of volatile organic compounds of about 5 ppm or less, making them suitable for use as eco-friendly materials.

[0122] 8. Methods for manufacturing release films

[0123] In one aspect of this disclosure, the method of manufacturing the release film is not particularly limited, as long as it involves forming a release layer using a release coating composition. For example, a release film can be obtained by applying a release coating composition to at least one surface of a base film and heating and drying it to cure the component (B) and the silicone emulsion component contained in the release coating composition, thereby forming a release layer.

[0124] In one aspect, the method of applying the release coating composition can be a method widely known in the art and used in the field of release films. Examples of such methods include, but are not limited to, gravure coating, bar coating, spray coating, spin coating, doctor blade coating, roller coating, die coating, online coating, and offline coating.

[0125] In one aspect, the applied release coating composition can be thermally cured by heating and drying, wherein the heating temperature can be 110°C to 160°C, 120°C to 160°C, 130°C to 160°C, 140°C to 160°C, 150°C to 160°C, 145°C to 155°C, or 150°C to 155°C, and can be within the range of the foregoing. In another aspect, the heating time can be 5 seconds to 60 seconds, 10 seconds to 40 seconds, 15 seconds to 30 seconds, or 20 seconds to 25 seconds, and can be within the range of the foregoing.

[0126] In one aspect, after heating and drying the release coating composition, the method may further include a post-curing process for curing the uncured components. For example, the post-curing process may include rolling the release film obtained by heat drying into a roller shape and then treating it at 40°C to 60°C for 1 to 5 days. The treatment temperature may be 40°C to 60°C, 45°C to 55°C, 47°C to 53°C, 49°C to 53°C, 50°C to 53°C, or 50°C to 51°C, and the treatment time may be 1 to 5 days, 1.5 to 4.5 days, 2 to 4 days, 2.5 to 3.5 days, or 3 to 3.5 days. When a post-curing process is performed, the stability over time of the physical properties of the release film (e.g., peel strength, residual adhesion, or frictional characteristics) can be improved.

[0127] In one respect, the release layer of the release film can be formed to have a dry thickness of 0.01 to 2 μm or 50 nm to 500 nm.

[0128] In one aspect, release films can be used in adhesives, semi-cured adhesives, protective films, coating materials, composite gaskets, ceramic sheets for laminated ceramic capacitors, semi-cured resins or prepregs for printed circuits. This disclosure will be clearly understood from the aspects described above and the experimental examples or embodiments described below. The disclosure will be explained in detail below with reference to the working examples described in the appended tables, enabling those skilled in the art to readily understand and reproduce it. However, the experimental examples or embodiments described below are given only as illustrations of the disclosure, and the scope of the disclosure is not limited to these examples or embodiments.

[0129] [Example]

[0130] 1. Preparation of release coating composition

[0131] Release coating compositions are prepared by mixing the following components. However, as shown in Table 1, the silicone emulsion component is used in various amounts relative to 100 parts by weight of component (B).

[0132] - Component (B) (Melamine component) (Manufacturer: SANWA CHEMICAL, Product name: NIKALAC MW12LF) 0.1-3.0% by weight

[0133] - Silicone emulsion component (PDMS, manufacturer: Dow Chemical, product name: Sol-off 7946 emulsion) 0.01-26.4% by weight

[0134] - Acid catalyst (melamine catalyst) (Manufacturer: Allnex, Product name: Cymel® 4040 catalyst) 0.1-3.0% by weight

[0135] - Platinum catalyst (manufacturer: Dow Chemical, product name: Syl-off 7924) 0.01-24% by weight

[0136] - PEDOT solution (manufacturer: Heraeus, product name: Clevios PT2) 0.5-20% by weight

[0137] - 9% ammonia solution (Manufacturer: Duksan, South Korea) 0.1-0.5% by weight

[0138] - Surfactant (Manufacturer: BYK, Product Name: BYK348) 0.01-0.3% by weight

[0139] - Remaining distilled water

[0140] 2. Manufacturing of release film

[0141] The release coating composition thus prepared was applied to at least one surface of a 50 μm thick polyethylene terephthalate substrate film (manufacturer: Toray Advanced Materials, product name: XD500) using a bar coater. It was then cured by heating and drying in a hot air dryer at 150°C for 30 seconds. In this way, a release film having a release layer formed on the substrate was manufactured.

[0142] [Comparative Example]

[0143] 1. Preparation of release coating composition

[0144] Release coating compositions were prepared in the same manner as in the examples, but with some variations. In Comparative Example 1, no silicone emulsion component was included. In Comparative Examples 2 through 5, each contained the same amount of silicone emulsion component as in Examples 1, 4, 6, and 7, but no melamine component was included. In Comparative Examples 6 and 7, a PEG-based silicone emulsion component (manufacturer: Silicone DNA, product name: SD-3667) was included instead of the silicone emulsion component in different amounts relative to 100 parts by weight of melamine component, as shown in Table 1.

[0145] 2. Manufacturing of release film

[0146] Perform the same procedure as in the examples, but use the release coating composition of the comparative examples to manufacture the release film in which the release layer is formed.

[0147] [Experimental Example 1] Measurement of peeling force and aging stability of green wafers

[0148] A ceramic slurry was prepared by adding 69 parts by weight of toluene and 46 parts by weight of a mixture of 50 parts by weight of barium titanate (BaTiO3; manufactured by Sakai Chemical Industries, product name: BT-03), 5 parts by weight of polyvinyl butyral (manufactured by Sekisui Chemical Industries, product name: S-Rec B·KBM-2), and 2 parts by weight of dioctyl phthalate (manufactured by Kanto Chemical, product name: dioctyl phthalate Cica Grade 1). The mixture was then ball-milled and dispersed.

[0149] The ceramic slurry was uniformly coated onto the surface of the release layer using an applicator. The release film, manufactured in the examples and comparative examples, was stored at room temperature for 48 hours. The film was then dried in a desiccator at 80°C for 1 minute. Finally, a ceramic green sheet with a thickness of 3 µm was obtained on the release film, and a release film with the ceramic green sheet attached thereto was manufactured.

[0150] Release films with ceramic green sheets attached were stored for 24 hours and 90 days respectively at room temperature (23°C) and 50% humidity. Then, acrylic adhesive tape (manufactured by Nitto Denko, product name: 31B tape) was adhered to the side of the ceramic green sheet opposite each release film, and the film was then cut into 25 mm widths for use as measurement samples.

[0151] The adhesive tape side of the sample was fixed to a flat plate, and the release film was peeled from the ceramic green sheet using a tensile tester (ChemInstrument AR-1000) at a peel angle of 90° and a peel speed of 500 mm / min. The peel force (gf / 25 mm) was measured. The average of the five measurements is shown in Table 1.

[0152] [Experimental Example 2] Measurement of Tape Peel Force

[0153] The peel strength of release films prepared by applying the release coating compositions manufactured in the above examples and comparative examples was evaluated using TESA 7475 tape (manufactured by TESA, Germany) (a standard tape widely used in the technical field of this disclosure).

[0154] The standard TESA 7475 tape was applied to the release coating surface of the release layer using a 2 kg roller, and the peel force was measured after 20 minutes or 24 hours at room temperature. Five peel force measurements were performed using a ChemInstrument AR-1000 machine at a peel angle of 180° and a peel speed of 12 in / min, and the average value was calculated.

[0155] [Experimental Example 3] Measurement of Organosilicon Content

[0156] The organosilicon content in the release layer of the release films prepared in the examples and comparative examples was measured using an X-ray fluorescence analyzer (XRF) (manufactured by OXFORD, product name: Lab X-3500).

[0157] [Experimental Example 4] Measurement of Residual Adhesion Rate

[0158] Measurement samples of the release films prepared in the examples and comparative examples were stored at 25°C and 65% RH for 24 hours, and then Nitto 31B standard tape was applied to the release coating surface. The resulting samples were then measured at room temperature at 20 g / cm³. 2 The load was pressed for 24 hours. After collecting the tape adhered to the release coating surface without contamination, the tape was attached to a smooth and clean polyethylene terephthalate (PET) film surface and pressed back and forth once with a 2kg tape roller, and then the peel force was measured.

[0159] For comparison, previously unused Nitto 31B tape was applied to a smooth and clean PET film surface, pressed back and forth once with a 2kg tape roller, and then the peel force was measured.

[0160] The peel force is measured as follows, and the residual adhesion rate is calculated according to mathematical formula 1 based on the measurement.

[0161] Measuring instrument: ChemInstrument AR-1000 machine

[0162] Measurement method: 180° peeling angle, peeling speed 30 mm / min

[0163] <Mathematical Formula 1>

[0164] Residual adhesion rate (%) = [Peel force of the tape after it adheres to the release layer surface / Peel force of the tape not in contact with the release layer surface] × 100

[0165] [Experimental Example 5] Surface Energy Measurement

[0166] Distilled water and diiodomethane were dropped onto the release coating surface of the release films prepared in the examples and comparative examples using a contact angle meter (product name: KRUSS DSA-100) to measure their respective contact angles. The measured contact angle values ​​were then substituted into the Owens-Wendt model to calculate the surface energy.

[0167] [Experiment Example 6] Friction Test

[0168] After rubbing the release layer of each release film prepared in the examples and comparative examples back and forth 10 times with a force applied by the thumb, the degree of change on the surface of the release layer was visually observed. Therefore, the friction characteristics were evaluated as follows.

[0169] ◎: No change after assessment

[0170] ○: Slight stains, but works fine.

[0171] △: Surface turbidity of the release layer

[0172] X: Release layer peeling

[0173] The results obtained from the experimental examples are summarized in Table 1 below.

[0174] Table 1

[0175]

[0176] According to the results in Table 1, the release film obtained using the release coating composition according to aspects of this disclosure exhibits excellent residual adhesion and frictional properties compared to those used in the comparative examples, while achieving a wide range of tape peel strength at room temperature for 1 day. Therefore, the release film can be used in various industrial fields. Furthermore, the excellent residual adhesion and frictional properties confirm the possibility of low-temperature curing. For Comparative Examples 2 to 5, which are release films containing silicone-based release coating compositions used in conventional techniques, the residual adhesion and surface energy are poor, and the frictional properties are very poor. In other words, using only silicone emulsions results in low residual adhesion and poor frictional properties, making curing difficult at low temperatures. In contrast, the combination of the melamine component and the silicone emulsion component in the examples improves the insufficient curing ability, while the silicone emulsion enhances the peel properties. This is because, although silicone emulsions have a large molecular weight and their reactive sites are restricted to one at each end of the molecule, making low-temperature curing difficult, melamine has a low monomer molecular weight and can have up to six reactive sites, thus being highly reactive. Therefore, it is possible to achieve excellent frictional properties that are difficult to achieve in conventional silicone-based release coating compositions.

[0177] According to the working example of this disclosure, even when the peel force with the green sheet is measured 90 days after preparation, it shows almost the same peel force as on the first day after preparation, indicating that it has very good stability characteristics over time.

[0178] Furthermore, in the working examples based on this disclosure, it was confirmed that at least 94% residual adhesion rate was obtained.

[0179] [Experimental Example 7] FT-IR Spectroscopy Measurement

[0180] FT-IR spectra were measured on release layers prepared using the release coating composition of Example 1 and conventional silicone-based release coating compositions containing self-emulsifying silicone. Briefly, a Bruker VERTEX 70 apparatus was used, and the release coating compositions of the examples and comparative examples were coated onto glass plates, heated and dried in a hot air dryer at 150°C for 30 seconds to cure, then 0.1 g of the coating was collected with a ceramic knife, and the spectra were measured using the ATR method of the measuring apparatus. The FT-IR spectral measurements are shown in... Figure 2 middle.

[0181] like Figure 2 As can be seen, unlike conventional methods, the release layer prepared from the release coating composition of this disclosure exhibits a higher release layer thickness (approximately 1020 cm²) due to the Si-O stretching absorption bands. -1 Approximately 1090 cm -1 The region exhibits a high absorption peak intensity, and due to the stretching absorption band of Si-C, it reaches approximately 800 cm⁻¹. -1 The region exhibits high absorption peak intensities. These peak intensities suggest that the release layer contains components derived from PDMS.

Claims

1. A water-based release coating composition capable of curing at 150°C or lower, comprising: Organosilicon emulsion component (A) containing polydimethylsiloxane (PDMS); Melamine component (B), wherein melamine component (B) is a melamine compound represented by chemical formula 1, its oligomers, its polymers, or combinations thereof; and acid catalyst, The silicone emulsion component (A) does not contain polyalkylene glycols or alkenyl groups. [Chemical Formula 1] Wherein X represents a hydrogen atom, -CH2OH or -CH2-OR and each may be the same or different, R represents an alkyl group having 1 to 8 carbon atoms and each may be the same or different, and at least one X is -CH2-O-CH3.

2. The water-based release coating composition of claim 1, wherein component (B) forms a Si-ORN bond structure through the condensation reaction of the organosilicon emulsion component, and wherein R is an alkyl group having 1 to 4 carbons.

3. The water-based release coating composition according to claim 1, wherein the acid catalyst is selected from hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, oxalic acid, acetic acid, formic acid, methanesulfonic acid, trifluoromethanesulfonic acid, isoprene sulfonic acid, camphor sulfonic acid, hexane sulfonic acid, octyl sulfonic acid, nonyl sulfonic acid, decyl sulfonic acid, hexadecane sulfonic acid, dinonylnaphthalene sulfonic acid, dinonylnaphthalene disulfonic acid, benzene sulfonic acid, alkylbenzene sulfonic acid, p-toluene sulfonic acid, melamine ZnI2, melamine trisulfonic acid (MTSA), cumene sulfonic acid, dodecylbenzene sulfonic acid, naphthalene sulfonic acid, nonylnaphthalene sulfonic acid, methyl phosphate, ethyl phosphate, propyl phosphate, isopropyl phosphate, butyl phosphate, butoxyethyl phosphate, octyl phosphate. The following are included in the list of esters, 2-ethylhexyl phosphate, decyl phosphate, lauryl phosphate, stearyl phosphate, oleic acid phosphate, behenyl phosphate, phenyl phosphate, nonylphenyl phosphate, cyclohexyl phosphate, phenoxyethyl phosphate, alkoxy polyethylene glycol phosphate, bisphenol A phosphate, dimethyl phosphate, diethyl phosphate, dipropyl phosphate, diisopropyl phosphate, dibutyl phosphate, dioctyl phosphate, di-2-ethylhexyl phosphate, dilauyl phosphate, distearate phosphate, diphenyl phosphate, dinonylphenyl phosphate, sulfonium salts, benzothiazolium salts, ammonium salts, and phosphonium salts.

4. The water-based release coating composition according to claim 1, wherein the weight ratio of component (B) to the acid catalyst is 100:5 to 100:

30.

5. The water-based release coating composition of claim 1, comprising the component (B) in an amount of 0.2% to 1.0% by weight based on the total weight of the composition.

6. The water-based release coating composition of claim 1, comprising from 0.02% to 9% by weight of the silicone emulsion based on the total weight of the composition.

7. The water-based release coating composition of claim 1, wherein the weight ratio of component (B) to silicone emulsion is from 100:10 to 100:900 based on solid content.

8. The water-based release coating composition of claim 1 further comprises at least one of an antistatic agent, a conductivity enhancer, a pH adjuster, and an antifouling agent.

9. The water-based release coating composition of claim 8, wherein the antistatic agent is at least one selected from PEDOT, PEDOT:PSS, polyaniline, polypyrrole, quaternary ammonium salt, sulfonate and phosphate.

10. The water-based release coating composition of claim 8, wherein the pH adjuster is at least one selected from sodium hydroxide, potassium hydroxide, calcium hydroxide and ammonia.

11. The water-based release coating composition of claim 8, comprising at least one of the following based on the total weight of the composition: The antistatic agent is used in amounts ranging from 0.1% to 30% by weight. The pH adjuster, in amounts ranging from 0.01% to 0.3% by weight, and The antifouling agent is used in amounts of 0.1% to 0.3% by weight.

12. The water-based release coating composition of claim 1, comprising water or a combination of water and an organic solvent, wherein the water and the organic solvent are combined in a weight ratio of 50:50 or higher, 60:40 or higher, 70:30 or higher, 80:20 or higher, 90:10 or higher, 95:5 or higher, or 99:1 or higher.

13. The water-based release coating composition of claim 1, wherein the water-based release coating composition is used to manufacture a release film for a protective film in the form of an adhesive or adhesive film or tape, a release film for a hot-press molding process, a coating material for coating a resin material, a release liner to be bonded to protect a resin layer coated on other materials, or a release film for a ceramic green sheet manufacturing process.

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