KR102190762B1 - Anti-static composition and released film comprising the same - Google Patents

Abstract

The present invention relates to an antistatic release composition comprising a mixture of an antistatic agent in a silicone compound and a release film comprising the same. The present invention can exhibit excellent transparency and coating properties while having low surface resistance and peeling force compared to a release film in which a silicone release layer and an antistatic layer are each laminated on a base film by internally adding an antistatic agent to the release composition. In addition, the manufacturing process is also simplified, and industrial productivity is also excellent.

Description

Anti-static composition and release film comprising the same {Anti-static composition and released film comprising the same}

The present specification describes an antistatic agent composition with improved releasability and coating properties, and a release film including the same.

The release film is generally used for the main purpose of protecting an adhesive layer (or adhesive layer), and specifically, it is used in the field of electronic materials such as general industrial adhesive tape, acrylic adhesive protective film, and semiconductor protective film. As the use of synthetic resins or synthetic fibers increases in the field of electronic materials, antistatic functions are also required in the release film field, where the function of protecting an adhesive layer is the main purpose.

In order to impart an antistatic function to the release film, a release film was developed in which an antistatic layer was laminated on the release layer, but the antistatic layer and the material constituting the release layer, for example, the bonding force with the silicone compound, the bonding force between the base film and the antistatic layer, or There was a problem of poor adhesion. In addition, it is difficult to implement the transparency required in the field of electronic materials, and there is a problem that the compatibility and productivity of the product are low due to the addition of the antistatic layer coating process and the silicone compound coating process.

Republic of Korea Patent Publication No. 10-1927851

In one aspect, the problem to be solved by the present invention is to provide an antistatic releasable composition having excellent surface resistance, curing degree, adhesion and transparency, and a release film including the same.

In one aspect, the present invention is a silicone compound; And a mixture of an antistatic agent, wherein the antistatic agent comprises a compound represented by the following Formula 1 in which a cation and an anion are combined,

[Formula 1]

In the above formula, R, R'and R" are independently a C ₁ to C ₁₅ primary alkyl group, a secondary alkyl group, or a tertiary alkyl group, and X ^- is an anion capable of forming a salt, providing an antistatic releasable composition. .

In another aspect, the present invention is a base film layer; And it provides a release film comprising a silicone release layer comprising the antistatic release composition, coated on the base film layer.

In one aspect, the releasable composition according to the present invention contains a specific antistatic agent mixed with a silicone compound, so that when applied to a release film, a lower surface surface compared to a release film in which a silicone release layer and an antistatic layer are respectively laminated on a base film. It can exhibit excellent transparency and coating properties, that is, hardenability and adhesion, while having resistance and peeling power. In addition, the manufacturing process is also simplified, and industrial productivity is also excellent.

1 is a schematic diagram showing a release film coated with a silicone release layer (110+120) in which a silicone compound 110 and an antistatic agent 120 are mixed on an upper portion of a base film layer 100 according to an embodiment of the present invention to be.

Hereinafter, embodiments of the present invention will be described in detail.

One embodiment of the present invention is a silicone compound; And it provides an antistatic release composition comprising a mixture of an antistatic agent containing imidazolium.

As an embodiment, the imidazolium may include a compound represented by the following Formula 1 in which a cation and an anion are combined.

[Formula 1]

. Wherein R, R 'and R "are independently C ₁ to C ₁₅ primary alkyl group of 1, a secondary alkyl group or tertiary alkyl group, X- is an anion capable of forming a salt thereof wherein one embodiment X ^- May be MA _n ^- or R _a Q ^- where M is an element of group VIIIB, IB, IIB, IIIA, VA on the periodic table (CAS version), and A is a halide (n is an integer of 2 to 15), more specifically a fluorine specifically R _a Q ^- is alkylsulfonyl, haloalkylsulfonyl, phosphoryl, methide, imide, or be a carbonyl group and, more specifically _{^{- O (SO 2 R),}} - N (SO ₂ R) ₂ , or ^- C(SO ₂ R) ₃ may be.

As an embodiment, the X cation of Formula 1 may be imidazolium, pyridinium, or pyrrolidinium. The antistatic agent according to one embodiment has excellent compatibility with a silicone compound in an organic solvent.

As an embodiment, the composition may contain an antistatic agent in an amount of 0.5 to 40% by weight, more specifically 3 to 40% by weight, based on the total weight of the composition. Specifically, the composition contains an antistatic agent based on the total weight of the composition, at least 0.5% by weight, at least 1% by weight, at least 3% by weight, at least 5% by weight, at least 8% by weight, at least 10% by weight, at least 12% by weight, 15% or more, 17% or more, 20% or more, 22% or more, 25% or more, 27% or more, 30% or more, 32% or more, 35% or more, or 37% or more It may contain an antistatic agent based on the total weight of the composition, 40% by weight or less, 38% by weight or less, 35% by weight or less, 33% by weight or less, 30% by weight or less, 28% by weight or less, 25% by weight or less, 23 Included in wt% or less, 20 wt% or less, 18 wt% or less, 15 wt% or less, 13 wt% or less, 10 wt% or less, 8 wt% or less, 5 wt% or less, 3 wt% or less, or 1 wt% or less can do. If it exceeds 40% by weight, the reactivity of the composition is lowered, thereby reducing the degree of curing and adhesion performance, and if it is less than 0.5% by weight, there is a problem that the charging performance is not implemented.

As an exemplary embodiment, the silicone compound is not limited, but may be a compound having a repeating structure represented by Formula 2 below.

[Formula 2]

In the above formula, R'is a C ₁ to C ₁₅ primary alkyl group, a secondary alkyl group, or a tertiary alkyl group, and n is an integer of 1 or more.

As an embodiment, the silicone compound may be a linear, branched, or polysiloxane having a structure in which both linear and branched chains are present. For example, in the above formula, R'is a C ₁ to C ₆ perfluoroalkyl group (C _n F _{2n +1} , n=1-6) may be included. In one embodiment, the silicone compound may include a polymer of polydimethylsiloxane and a compound having a repeating structure represented by Chemical Formula 2.

As an embodiment, the composition may include 3 to 30% by weight of a silicone compound based on the total weight of the composition. Specifically, the composition contains a silicone compound based on the total weight of the composition, 3% by weight or more, 6% by weight or more, 8% by weight or more, 10% by weight or more, 12% by weight or more, 14% by weight or more, 16% by weight or more, 18 wt% or more, 20 wt% or more, 22 wt% or more, 24 wt% or more, 26 wt% or more, or 28 wt% or more, 30 wt% or less, 28 wt% or less, 26 wt% or less, 24% or less, 22% or less, 20% or less, 18% or less, 16% or less, 14% or less, 12% or less, 10% or less, 8% or less, 6% or less, or It may contain up to 4% by weight. If it exceeds 30% by weight, the viscosity becomes very high and work performance is deteriorated, and if it is less than 3% by weight, there is a problem of deterioration of the coating properties of the silicone solution.

As an embodiment, the composition may include 3 to 40% by weight of the antistatic agent, more specifically 25 to 35% by weight, based on 100% by weight of the silicone compound. When the antistatic agent is included in excess of 40% by weight based on 100% by weight of the silicone compound, the curing degree and adhesion performance of the coating layer are deteriorated, and when it is included in less than 3% by weight, the charging performance may not appear.

In one embodiment, the composition may further include a curing agent according to a curing type, and the curing agent may include platinum. The content of the curing agent may be 1 to 10% by weight, more specifically 1 to 5 parts by weight, based on 100% by weight of the silicone compound. If the content is less than 1 part by weight, it is difficult to form the releasable composition, and if it exceeds 10 parts by weight, there may be a problem that the peel strength stability is lowered.

As an embodiment, the composition may further include a catalyst to improve process speed, and the catalyst may include platinum. The content of the catalyst may be 1 to 10% by weight, more specifically 1 to 5 parts by weight, based on 100% by weight of the silicone compound. If the content is less than 1 part by weight, the reaction rate is slow and hardening is not performed properly. If the content exceeds 10 parts by weight, the Pot-Life may be deteriorated and mass production performance may be deteriorated.

In one embodiment, in the composition, the silicone compound and the antistatic agent may be dispersed in an organic solvent. The organic solvents are, for example, aromatic hydrocarbon solvents such as toluene and xylene, aliphatic hydrocarbon solvents such as hexane, heptane, octane, isooctane, decane, cyclohexane, methyl cyclohexane, isoparaffin, and industrial gasoline ), hydrocarbon solvents such as petroleum benzene and solvent naphtha, acetone, methyl ethyl ketone, 2-pentanone, 3-pentanone, 2-hexanone, 2-heptanone, 4-heptanone, methyl isobutyl ketone, di Ketone solvents such as isobutyl ketone, acetonyl acetone and cyclohexanone, ester solvents such as ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, and isobutyl acetate, diethyl ether, dipropyl ether, diisopropyl Ether solvents such as ether, dibutyl ether, 1,2-dimethoxy ethane, and 1,4-dioxane, 2-methoxyethyl acetate, 2-ethoxyethyl acetate, propylene glycol monomethyl ether acetate, 2-part Solvents having esters and ether moieties such as oxyethyl acetate, hexamethyldisiloxane, octamethyltrisiloxane, octamethyl cyclotetrasiloxane, decanemethyl cyclopentasiloxane, tris(trimethylsiloxy)methylsilane, tetrakis(trimethylsiloxy) ) Siloxane-based solvents such as silane, trifluorotoluene, hexafluoroxylene, methyl nonafluorobutyl ether, and fluorine-based solvents such as ethyl nonafluorobutyl ether, or a mixed solvent of at least one of them. As an embodiment, the organic solvent may be 200 to 1500% by weight based on 100% by weight of the silicone compound. In one embodiment, the organic solvent may be a mixture of toluene and heptane, and the mixing ratio may be 1:5 to 1:15. If the mixing ratio of the organic solvent is less than 1:5, coating properties may be poor, and if it is greater than 1:15, the coating film thickness may be non-uniform.

According to another embodiment, the present invention relates to a release film comprising the antistatic releasable composition. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows an exemplary form of the present invention. Referring to Figure 1, the release film according to an embodiment includes a base film layer 100; And a silicone release layer (110+120) comprising a release composition including a mixture of the silicone compound 110 and the antistatic agent 120 coated on the base film layer 100.

In one embodiment, the release layer is also referred to as "release layer" or "release film layer", and serves to protect the adhesive composition layer from foreign matter. As an embodiment, the release composition included in the release layer may include the antistatic release composition according to embodiments of the present invention described above, and may be included in the release film in a cured state. As an embodiment, the thickness of the release layer may be 0.01 to 1㎛. When the thickness of the release layer is less than 0.01 μm, the coating layer is not uniform, and when the thickness is 1 μm or more, there is a problem of occurrence of blocking.

As an embodiment, the base film may be an optical film, and any film excellent in transparency, mechanical strength, thermal stability, moisture shielding property, isotropic property, etc. may be used without limitation. For example, it may be a sheet or film comprising a polyester resin such as polyethylene terephthalate, polyethylene naphthalate, or polybutylene terephthalate. The base film may be corona or primer treated to improve adhesion with the silicone compound. In one embodiment, the thickness of the base film layer may be 25 to 250 μm. If the thickness of the base film is less than 25 μm, there is a risk of damage from external impacts such as scratches, and if it exceeds 250 μm, peeling force may be lowered. The base film requires high surface tension for post-processing of the release layer or the back surface. For example, the surface tension of the base film may be 40 to 70 dyne/cm, more specifically 45 to 65 dyne/cm. If the surface tension is less than 40 dyne/cm, adhesion to the release film may be deteriorated, and if it exceeds 70 dyne/cm, agglomeration phenomenon may occur between the base film and the release film.

Surface resistance is an index indicating charging performance, and in one embodiment, the surface resistance of the release film including the releasable composition may be 10 ⁸ to 10 ¹² Ω/cm ² . If the surface resistance exceeds 10 ¹² Ω/cm ^2, it can be seen that there is no charging performance.

With regard to the function as a release film, in one embodiment, the peeling force of the release film including the release composition may be 5 to 200 g/inch as evaluated by the method of FINAT test no10. using TESA 7475 tape. This is because the limit of the silicone formulation used in the releasable composition is 5 to 200 g.

In one embodiment, the release film contains the imidazolium of Formula 1 as an antistatic agent, so that there is little difference in transparency before and after the antistatic agent is added to the silicone compound. From the above point of view, the transparency of the release film including the release composition may vary depending on the transparency of the base film, and may be, for example, 3 to 99%. If the transparency is less than 3%, blocking may occur.

In one embodiment, the release film may be prepared by applying the release composition on a base film, followed by drying and heat treatment to form a silicone release layer of the cured film. As an embodiment, the coating may use a known method such as a bar coating method, a doctor blade method, a reverse roll coating method, or a gravure roll coating method. In addition, curing processes such as drying and thermal curing or ultraviolet curing of the release film may be performed individually or simultaneously. When it is carried out at the same time, it can be carried out at 100℃ or higher. Drying and heat curing may be performed at 100° C. or higher for 50 seconds or longer. If the drying temperature is less than 100°C and the curing time is less than 50 seconds, the curing of the releasable composition may be incomplete and a problem may occur in durability.

Hereinafter, the present invention will be described in detail with reference to Examples, Comparative Examples and Test Examples. These are only illustratively presented to explain the present invention in more detail, and that the scope of the present invention is not limited by these Examples, Comparative Examples, and Test Examples, for those of ordinary skill in the art. It will be self-evident.

[Example 1]

A release film according to an embodiment of the present invention was prepared according to the following method.

Silicone compound and polydimethylsiloxane copolymer (product name: KS-847H, manufacturer: Shin-Etsu Silicone Co., Ltd.) with respect to 100% by weight, as an antistatic agent imidazolium (product name: X-62-262K, manufacturer: Shin-Etsu) Silicone Co., Ltd.) 30% by weight, 2% by weight of a curing agent containing platinum, and 2% by weight of a catalyst containing platinum are mixed, and prepared with an organic solvent in which toluene and methyl ethyl ketone are mixed in a weight ratio of 1:1. A releasable composition solution was prepared by preparing 10 times the diluent compared to the copolymer of the silicone compound and polydimethylsiloxane.

Prepare a corona-treated polyethylene terephthalate (PET) film (basis weight 100 g/m ² ) with a base film, and apply 0.1 g/m ² as a solid content on the base film using a bar coater with the prepared releasable composition solution Thereafter, a cured film (release layer) was formed by sufficiently heat treatment for 50 seconds at a temperature of 140° C. in a hot air circulation dryer. At this time, the thickness of the base film was 50 μm, and the thickness of the release layer was 0.4 μm.

[Comparative Example 1]

As a comparative example of the present invention, a release film containing a PEDOT-PSS copolymer as an antistatic agent was prepared according to the following method.

A copolymer of a silicone compound and polydimethylsiloxane (product name: KS-847H, manufacturer: Shin-Etsu Silicone Co., Ltd.), based on 100% by weight of PEDOT-PSS copolymer of the following formula (3) as an antistatic agent, containing 30% by weight, platinum Prepared with an organic solvent in which 2% by weight of a curing agent and 2% by weight of a catalyst containing platinum are mixed, and toluene and methyl ethyl ketone are mixed in a weight ratio of 1:1, and the diluent is increased by 10 times compared to the copolymer of the silicone compound and polydimethylsiloxane. Prepared to prepare a releasable composition solution.

[Formula 3]

Prepare a corona-treated polyethylene terephthalate (PET) film (basis weight 100 g/m ² ) with a base film, and apply 0.1 g/m ² as a solid content on the base film using a bar coater with the prepared releasable composition solution Thereafter, a cured film (release layer) was formed by sufficiently heat treatment for 50 seconds at a temperature of 140° C. in a hot air circulation dryer. At this time, the thickness of the base film was 50 μm, and the thickness of the release layer was 0.4 μm.

[Comparative Example 2]

As a comparative example of the present invention, a release film containing imidazolium having a different formula from the present invention as an antistatic agent was prepared according to the following method.

Copolymer of silicone compound and polydimethylsiloxane (product name: KS-847H, manufacturer: Shin-Etsu Silicone Co., Ltd.) with respect to 100% by weight of a curing agent containing 30% by weight of imidazolium represented by the following formula 4 as an antistatic agent 2% by weight And 2% by weight of a catalyst containing platinum, and prepared with an organic solvent in which toluene and methyl ethyl ketone are mixed in a weight ratio of 1:1, and a diluent is prepared 10 times as compared to the copolymer of the silicone compound and polydimethylsiloxane. The solution was prepared.

[Formula 4]

In the above formula, R, R'and R" are independently a C ₁ to C ₁₅ primary alkyl group, a secondary alkyl group, or a tertiary alkyl group, and X ^- is an anion capable of forming a salt.

Prepare a corona-treated polyethylene terephthalate (PET) film (basis weight 100 g/m ² ) with a base film, and apply 0.1 g/m ² as a solid content on the base film using a bar coater with the prepared releasable composition solution Thereafter, a cured film (release layer) was formed by sufficiently heat treatment for 50 seconds at a temperature of 140° C. in a hot air circulation dryer. At this time, the thickness of the base film was 50 μm, and the thickness of the release layer was 0.4 μm.

[Comparative Example 3]

As a comparative example of the present invention, a release film containing imidazolium having a different formula from the present invention as an antistatic agent was prepared according to the following method.

Copolymer of a silicone compound and polydimethylsiloxane (product name: KS-847H manufacturer: Shin-Etsu Silicone Co., Ltd.), based on 100% by weight, 30% by weight of imidazolium represented by the following formula (5) as an antistatic agent, 2% by weight of a curing agent containing platinum % And 2% by weight of a catalyst containing platinum, and prepared with an organic solvent in which toluene and methyl ethyl ketone are mixed in a weight ratio of 1:1, and a diluent was prepared in an amount of 8 times compared to the copolymer of the silicone compound and polydimethylsiloxane. A releasable composition solution was prepared.

[Formula 5]

In the above formula, R, R'and R" are independently a C ₁ to C ₁₅ primary alkyl group, a secondary alkyl group or a tertiary alkyl group, and X ^- is an anion capable of forming a salt.

Prepare a corona-treated polyethylene terephthalate (PET) film (basis weight 100 g/m ² ) with a base film, and apply 0.1 g/m ² as a solid content on the base film using a bar coater with the prepared releasable composition solution Thereafter, a cured film (release layer) was formed by sufficiently heat treatment for 50 seconds at a temperature of 140° C. in a hot air circulation dryer. At this time, the thickness of the base film was 50 μm, and the thickness of the release layer was 0.4 μm.

[Comparative Example 4]

As a comparative example of the present invention, a release film containing no antistatic agent was prepared according to the following method.

A silicone compound and a polydimethylsiloxane copolymer (product name: KS-847H manufacturer: Shin-Etsu Silicone Co., Ltd.) were mixed with 2% by weight of a curing agent containing platinum and 2% by weight of a catalyst containing platinum, and toluene And methyl ethyl ketone were prepared in an organic solvent mixed in a weight ratio of 1:1, and a diluent was prepared 10 times as compared to the copolymer of the silicone compound and polydimethylsiloxane to prepare a releasable composition solution.

After coating the prepared releasable composition solution as a base film as a solid content on the base film using a bar coater, 0.1 g/m ^{2 was} applied to the base film, and then sufficiently heat-treated at a temperature of 140° C. for 50 seconds in a hot-air circulation drying device, Release layer) was formed. At this time, the thickness of the base film was 50 μm, and the thickness of the release layer was 0.4 μm.

[Comparative Example 5]

As another comparative example of the present invention, a release film in which an antistatic agent was not internally added to a silicone release layer, and a silicone release layer and an antistatic layer were laminated, was prepared according to the following method.

A silicone compound and a polydimethylsiloxane copolymer (product name: KS-847H, manufacturer: Shin-Etsu Silicone Co., Ltd.) were mixed with 2% by weight of a curing agent containing platinum and 2% by weight of a catalyst containing platinum, and toluene And methyl ethyl ketone were prepared in an organic solvent mixed in a weight ratio of 1:1, and a diluent was prepared 10 times as compared to the copolymer of the silicone compound and polydimethylsiloxane to prepare a releasable composition solution.

As the base film, the prepared releasable composition solution was prepared using a base material on which an antistatic agent including imidazolium of Formula 1 (product name: X-62-262K, manufacturer: Shin-Etsu Silicone Co., Ltd.) as an antistatic agent was already stacked. After coating 0.1 g/m ² as a solid content on the base film using a bar coater, a cured film (release layer) was formed by sufficiently heat treatment at a temperature of 140° C. for 50 seconds in a hot air circulation dryer. At this time, the thickness of the base film was 50 μm, and the thickness of the release layer was 0.4 μm.

[Test Example 1]

Peeling force, transparency, surface resistance, and constant temperature and humidity of each release film of Example 1 and Comparative Examples 1 to 5 were measured by the following method, and the results are shown in Table 1.

Peel force evaluation

TESA7475 tape (1 inch) is bonded to the treated surface of each release film, and compressed once with a 2 kg roller, aged at 25°C for 20 hours, and then peeled at an angle of 180° using a tensile tester of 0.3 m/min. The force (N) required to pull and peel the bonded paper was measured. FINAT test method no.10 was used as the test method.

Transparency measurement

Transparency was measured in the visible light (550nm) region using a UV photometer (Simazu Co.).

Surface resistance (antistatic property) measurement

According to the ASTM D257 measurement method, it was measured under conditions of 55% RH, 23°C, and an applied voltage of 500V.

Hardness measurement

While wearing silicone gloves, rub with constant force 10 times in one direction. If the coating layer became cloudy after 1 to 3 times, the curing was less (bad), and if there was no change even after rubbing about 10 times, the curing was well (good), and the difference between the bad and the good was usually indicated.

Adhesion measurement

While wearing silicone gloves, rub with constant force 10 times in one direction. If the coating layer is peeled therein, the adhesion is poor (bad), and if the coating layer does not come off even after rubbing 10 times or more, the adhesion is good (good), and the above-mentioned poor and good are indicated as normal.

Acrylic tape peeling force (g/inch) Surface resistance (Ω/cm ² ) transparency(%) Hardness Adhesion Example 1 15~17 10E9~10 93 Good Good Comparative Example 1 70~80 Spec out 64 Bad Bad Comparative Example 2 38~53 Spec out 92 usually usually Comparative Example 3 20~22 Spec out 93 usually usually Comparative Example 4 14~16 None 93 Good Good Comparative Example 5 15~17 10E9~10 93 Good Good

From the above results, it was found that Example 1, which is an embodiment of the present invention, has the same peeling force as Comparative Example 4, which does not contain an antistatic agent, and has good surface resistance and high peeling force of the release film containing the existing silicone compound. It can be seen that it is maintained.

In addition, while Example 1 exhibited a high surface resistance value, Comparative Examples 2 to 4 in which other compounds were internalized as an antistatic agent had a surface resistance value exceeding the reference value and thus did not have an antistatic ability, and thus were not suitable as an antistatic agent. Comparative Examples 3 and 4 in which imidazolium having a chemical formula was internalized as an antistatic agent were also found to have lower curing degree and adhesion than Example 1, resulting in poor coating properties. In addition, Example 1 was confirmed to significantly improve the transparency of about 30% or more than the film in which the PEDOT-PSS copolymer was internalized with the silicone compound by internalizing the imidazolium of Formula 1 to the silicone compound as an antistatic agent.

Unlike Example 1, in the case of Comparative Example 4 in which imidazolium of Formula 1 was not internalized and laminated as a separate antistatic layer, the surface resistance similar to Example 1 was shown, but Comparative Example 4 was an additional coating (or laminated layer) in the process. ) Since the process is more required, there is a higher probability that the product will be contaminated through several processes, and thus the performance of the final product may be deteriorated. It has the advantage that it can reduce the factors of performance degradation that may occur in the system.

[Test Example 2]

In one embodiment of the present invention, surface resistance, curing degree, and adhesion were compared and evaluated according to the mixing ratio of the silicone compound and the polydimethylsiloxane copolymer and the antistatic agent. At this time, the release film was prepared in the same manner as in Example 1 except for the blending ratio, and the evaluation method of each of the following items was the same as described in Test Example 1.

division Silicone compound
(weight%) Antistatic agent (% by weight) Surface resistance (Ω/cm ² ) Hardness Adhesion Example 2 100 2 10E12↑ Good Good Example 3 100 3 10E11.8 Good Good Example 4 100 5 10E11.0 Good Good Example 5 100 10 10E10.4 Good Good Example 6 100 20 10E9.1 Good Good Example 1 100 30 10E9~10 Good Good Example 7 100 40 10E9.2 usually usually Example 8 100 45 10E9.1 Bad Bad

As a result, when the antistatic agent exceeds 40% by weight with respect to 100% by weight of the silicone compound, the hardening and adhesion were poor, and when the antistatic agent was included in less than 3% by weight, the surface resistance was 10 ¹² Ω/cm ² In excess, it was found that there was no antistatic performance.

110: silicone compound
120: antistatic agent
100: base film layer

Claims (13)

Silicone compounds; And a mixture of antistatic agents,
The antistatic agent includes a compound represented by the following formula 1 in which a cation and an anion are combined,
The antistatic agent is included in 20 to 40% by weight based on 100% by weight of the silicone compound,
Antistatic releasable composition comprising a mixture of toluene and methyl ethyl ketone as an organic solvent:
[Formula 1]

In the above formula, R is independently a C ₁ to C ₁₅ primary alkyl group, a secondary alkyl group, or a tertiary alkyl group, and X ^- is an anion capable of forming a salt. The antistatic releasable composition of claim 1, wherein the silicone compound is contained in an amount of 3 to 30% by weight based on the total weight of the composition. delete delete The antistatic releasable composition of claim 1, wherein the silicone compound is a compound comprising a repeating structure represented by the following formula (2):
[Formula 2]

In the above formula, R'is a C ₁ to C ₁₅ primary alkyl group, a secondary alkyl group, or a tertiary alkyl group, and n is an integer of 1 or more. The antistatic releasable composition according to claim 5, wherein the silicone compound comprises a copolymer of polydimethylsiloxane and a compound having a repeating structure represented by Formula 2 above. Base film layer; And
A silicone release layer comprising the antistatic release composition of any one of claims 1, 2, 5 and 6 coated on the base film layer;
Release film comprising a. The release film according to claim 7, wherein the base film layer comprises a polyester resin. The release film according to claim 7, wherein the thickness of the silicon release layer is 0.01 to 1 µm. The release film according to claim 7, wherein the thickness of the base film layer is 25 to 250 µm. The release film of claim 7, wherein the release film has a surface resistance of 10 ⁸ to 10 ¹² Ω/cm ² . The release film according to claim 7, wherein the release film has a peel force of 5 to 200 g/inch. The release film according to claim 7, wherein the release film has a transparency of 3 to 99%.

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