KR101556704B1 - Silicone release film improved coating deffect - Google Patents
Silicone release film improved coating deffect Download PDFInfo
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- KR101556704B1 KR101556704B1 KR1020140132310A KR20140132310A KR101556704B1 KR 101556704 B1 KR101556704 B1 KR 101556704B1 KR 1020140132310 A KR1020140132310 A KR 1020140132310A KR 20140132310 A KR20140132310 A KR 20140132310A KR 101556704 B1 KR101556704 B1 KR 101556704B1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C08J7/047—
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
Abstract
The present invention relates to a silicone release film excellent in coating appearance.
The silicone release film of the present invention comprises a release layer formed on the polyester base layer by a silicone release agent containing an alcohol alkoxylate surfactant having a molecular end represented by the following formula (1) The silicone release film formed by the in-line coating method has a good coating property with good peel strength and residual adhesive ratio, and at the same time has an excellent appearance of a coating, so that a liquid crystal display, a plasma display, a personal portable information terminal and navigation, Industrial adhesive tapes such as polymer light emitting diodes and polarizing plates, and films for various optical applications.
Formula 1
M, n, R, A and B are as defined in the specification.
Description
The present invention relates to a silicone release film having excellent coating appearance, and more particularly, to a silicone release film having an alcohol alkoxylate-based surfactant containing an epoxy at the molecular end on a polyester base layer by an inline coating method A release layer formed on the surface of the release layer and having excellent coating properties with a peel force and a residual adhesion ratio, and having an excellent coating appearance.
Generally, the silicone release agent is composed of a silicon main chain, a silicone hardener, a silane coupling agent, a silicone surfactant, and a catalyst.
As the silicon-based material, hexenyl polysiloxane containing vinylpolysiloxane or vinyl group is mainly used. Hydrogenpolysiloxane is used as a silicone curing agent, and alkoxy group or functional group is used as a silane coupling agent. to be.
There have been reported a number of patents using a surfactant for a silicone release film using a silicone release agent. For example, Korean Patent Laid-Open Publication No. 2014-33680 discloses a composition containing a silicone component containing an alkenyl polysiloxane as a main chain, Discloses a silicone release film in which the silicone release layer is formed by coating at least once on at least one side of the layer to improve the peeling stability with time. In the silicone release polyester film disclosed in Korean Patent Laid-Open Publication No. 2005-120252, In addition, hexenyl polysiloxane or vinylpolysiloxane 4 to 30 can be used in order to improve the adhesion between the polyester substrate and the silicon interface and to easily peel off the adhesive component and to ensure excellent solvent resistance and stability of the release layer. By weight, hydrogen polysiloxane 0.8-3% by weight, Discloses a release liquid comprising 0.003 to 0.5% by weight of a zinc oxide compound, 0.002 to 0.005% by weight of a chelate platinum catalyst, 0.9 to 1.1% by weight of a surfactant, and a residual amount of water and polyvinyl alcohol and containing ethylcellulose polyester have.
Further, Japanese Patent Laid-Open Publication No. 2013-208810 discloses a silicon-free polyester film in which the projections derived from the fine silicone aggregate are reduced in the light-shielding property and the surface property of the green sheet so as to be suitable for forming a thin film ceramic green sheet, , Polyoxyethylene lauryl ether is used as a surfactant.
In general, the in-line coating technology is a technology for imparting a new function to a polyester film by performing coating at the same time as at least one or more axes of drawing in the process of forming a polyester film, . Using such a coating technique, a new function is imparted to the releasable polyester film, or a method of solving various problems such as a change in the peeling force with time, a transfer to the adhesive layer of the releasing layer, and a defect in the coating appearance, have.
However, when the known silicone release agent is applied to the in-line coating technique, there is a problem of compatibility between silicon and a solvent (water) due to poor spreading and wetting of the coating liquid during coating and poor coating appearance, There is a limitation in manufacturing an inline silicone release film of a high quality to be applied for optical use. Accordingly, the present inventors have made efforts to improve the appearance and coating properties of the inline silicone release film provided by the conventional inline coating method, and as a result, it has been found that by adding a specific surfactant to a conventional silicone release agent, The present invention has been accomplished by providing a silicone release film excellent in coating appearance while maintaining adhesion.
An object of the present invention is to provide a silicone release film comprising a release layer formed on a polyester base layer by a silicone release agent containing a specific surfactant by an in-line coating method.
It is an object of the present invention to provide a silicone release film having an excellent coating property and an excellent coating appearance property by an in-line coating method.
In order to achieve the above object, the present invention provides a silicone release film comprising a silicone release layer formed on at least one side of a polyester base layer by in-line coating,
Wherein the silicone release layer is a silicon release film formed by a silicone release agent containing a surfactant represented by the following formula (1).
Formula 1
Wherein m is from 0 to 12, n is from 1 to 12, x is from 1 to 12, R is an ether group or ester group compound containing a C 1 -C 33 alkyl group, an epoxy, A and B are each a C 1 to C 15 alkyl group, and A and B do not have the same carbon number.
The above silicone release film satisfies the following (1) peel strength (g / in)? 15 and (2) residual adhesion rate, Y (%)?
In addition, the silicone release film of the present invention has excellent coating appearance characteristics, and (3) satisfies the requirement of 0 ≤ bubble defect area, x (%) &
In the silicone release film of the present invention, the silicone release agent specifically includes 3.5 to 10 parts by weight of a hydrogel-containing polysiloxane and 0.05 to 4 parts by weight of a surfactant represented by the general formula (1), based on 100 parts by weight of the alkenyl polysiloxane, Based on the total weight, of a catalyst comprising platinum or a compound containing platinum as a solid component.
Wherein the silicone release agent is an aqueous silicone release agent containing a solids content of 1.2 to 15% by weight and the thickness of the silicone release layer formed by in-line coating is optimized to 0.01 to 3 占 퐉.
According to the present invention, it is possible to provide a silicone release film having excellent appearance characteristics and coating properties in an inline silicone release film provided by an in-line coating method.
Accordingly, the present invention provides a silicone release film comprising a release layer formed on a polyester base layer by a silicone release agent to which a specific surfactant is added, wherein the surfactant has both intramolecular, hydrophilic and lipophilic groups , Compatibility between silicone and solvent (water) is solved, and appearance defects of the release layer formed by the in-line coating method can be minimized while the adhesion to the substrate is excellent.
Hereinafter, the present invention will be described in detail.
The present invention relates to a polyester base material,
There is provided a silicone release film comprising a silicone release layer containing a surfactant represented by the following formula (1) and formed by in-line coating.
Formula 1
Wherein m is from 0 to 12, n is from 1 to 12, x is from 1 to 12, R is an ether group or ester group compound containing a C 1 -C 33 alkyl group, an epoxy, A and B are each a C 1 to C 15 alkyl group, and A and B do not have the same carbon number.
The surfactant represented by Formula 1 is an alcohol alkoxylate surfactant having an epoxy group at the molecular end, and an alcohol alkoxylate surfactant having a molecular end substituted with an epoxy or an alkyl group containing the epoxy, , The epoxy group which improves the adhesion between the substrate layer and the silicone release layer improves the solvent resistance and the residual adhesion rate and in particular has the hydrophilic and lipophilic groups in the molecule of the surfactant at the same time so that the compatibility of silicone with the solvent It is possible to provide a silicon release film having excellent appearance by minimizing appearance defects when the in-line coating is solved.
A known compound containing an epoxy at the terminal (R) of the molecule represented by the general formula (1) can be used. Specifically, as an example of the compound containing an epoxy at the terminal of a molecule, a compound containing a glycidyl group or an epoxy Cyclohexane may be used.
Further, as the ether group compound or ester group compound containing epoxy, glycidyl methacrylate, glycidyl acrylate, vinyl glycidyl ether, glycidyl neodecanoate, allyl glycidyl ether, polyglycidyl ether, sidil, poly (glycidyl methacrylate), phenyl glycidyl can be used any one selected from the group consisting of ether, C 12 -C 14 alkyl glycidyl ether and o- cresol glycidyl ether, In the examples of the present invention, phenylglycidyl ether compounds are described, but the present invention is not limited thereto.
The silicone release agent of the present invention is a composition comprising a conventional alkenyl polysiloxane, a hydrotreated polysiloxane, a silicone surfactant and a platinum catalyst, wherein the surfactant is an alcohol alkoxyl containing an epoxy at the molecular terminal (R) Rate surfactant is used.
At this time, it is preferable that the content of the surfactant represented by the formula (1) is 0.05 to 4.0 parts by weight based on 100 parts by weight of the alkenyl polysiloxane. When the content is less than 0.05 part by weight, Exceeds 4.0 parts by weight, the interfacial adhesion, the loft-off property and the like are lowered and a large amount of bubbles are generated.
More specifically, the silicone release agent of the present invention comprises 3.5 to 10 parts by weight of a hydrogel-containing polysiloxane and 0.05 to 4.0 parts by weight of a surfactant represented by the formula (1) based on 100 parts by weight of the alkenyl polysiloxane, 0.1 to 6.0 parts by weight.
In addition, it is preferable that the silicone release agent of the present invention further contains a catalyst comprising platinum or platinum based on the total weight of the composition in an amount in the range of 50 to 1,000 ppm. The catalyst has a hardening function. If the catalyst is less than 50 ppm, there may be a problem of uncured. On the other hand, if the amount of the catalyst is more than 1,000 ppm, there may be a problem of overcuring.
From the above characteristics, the silicone release film of the present invention can provide a release film excellent in adhesion to a substrate, excellent in chemical resistance and loft-off property, satisfying a residual adhesion ratio of 90% or more and excellent in coating appearance defects have.
Thus, the silicone release film of the present invention
(1) peel strength (g / in) ≤ 15 and (2) residual adhesive ratio, Y (%) ≥ 85. Particularly, %) ≪ 2.
The present invention also provides a method for producing a polyester film, comprising the steps of: 1)
2) A silicone release agent containing a surfactant represented by the general formula (1) is applied to one surface or both surfaces of the uniaxially stretched polyester film to form a release layer,
3) A method for producing a silicone release film by an in-line coating method comprising biaxially stretching a polyester film on which the release layer is formed.
Hereinafter, the characteristics of the silicone release film will be described by a step-by-step description of the production method.
The substrate film used in step 1) in the method of producing the silicone release film of the present invention may be a uniaxial or biaxially oriented film having excellent productivity and processability, and the polyester film of the present invention is preferable.
As a material of the polyester film, a polyester resin such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate is described as an example, but it is to be understood that it is not limited thereto. The polyester film refers to a polyester obtained by polycondensing an aromatic dicarboxylic acid and an aliphatic glycol. The aromatic dicarboxylic acid is obtained by using terephthalic acid, 2,6-naphthalene dicarboxylic acid or the like, As the dicarboxylic acid component, isophthalic acid, phthalic acid, terephthalic acid, 2,6-naphthalene dicarboxylic acid, adipic acid, sebacic acid, oxycarboxylic acid (such as P-oxybenzoic acid) can be used. Examples of the aliphatic glycol include ethylene glycol, diethylene glycol, 1,4-cyclohexanedimethanol, propylene glycol, butanediol, neopentyl glycol and the like. The dicarboxylic acid component and the glycol component are two kinds Or more may be used in combination.
Representative examples of the polyester resin include polyethylene terephthalate (PET), polyethylene-2,6-naphthalene dicarboxylate (PEN), and copolymers containing the third component in the polyester.
The polyester resin having the above-mentioned constitution was vacuum-dried, melted by an extruder, extruded into a sheet through a T-die (DIE), adhered to the casting drum by electrostatic application (pinning) A uniaxially stretched polyester film is obtained by obtaining a polyester sheet and performing uniaxial stretching at 2.5 to 4.5 times in the roll heated to a temperature not lower than the glass transition temperature of the polyester resin by the difference in the peripheral speed between rolls and rolls .
Step 2) of the production method of the polyester release film of the present invention is a step of forming the release layer by applying the silicone release agent of the present invention one or more times to one side or both sides of the uniaxially stretched polyester film in step 1) . More specifically, the silicone release agent may be applied by a method such as a Meyer bar method or a gravure method, and a polar group may be introduced onto the surface of the film before application to improve adhesiveness between the coating layer and the film, Corona discharge can be done to improve the performance.
The composition and content of the silicone component-containing releasing agent of the present invention used in step 2) of the production method of the present invention are the same as those described above.
In this case, the silicone release agent is as described above in the silicone release film, and contains the surfactant represented by the formula (1).
The silicon release agent of the present invention comprises 100 parts by weight of an alkenyl polysiloxane, 3.5 to 10 parts by weight of a hydrogel precursor polysiloxane, and 0.05 to 4.0 parts by weight of a surfactant represented by the following formula (1), wherein the composition contains platinum or platinum Based on the total weight of the catalyst. The silicone release agent may further contain 0.1 to 6.0 parts by weight of a silane coupling agent.
The silicone release agent may be diluted in a solvent before application to the polyester film and then applied, wherein the dilution of the silicone release composition is such that the silicone release composition is in an amount within the range of 1.2 to 15 weight percent solids content Of the silicone release agent with the solvent as the remaining amount. The solvent is not limited as long as it can be applied on a film substrate by dispersing the silicone release composition according to the present invention as a solid content, but water is preferably used. If the solid content is less than 1.2% by weight, pinholes may be formed or a uniform silicone coating layer may not be formed, so that there may be a problem of peeling off the adhesive layer after being laminated with the adhesive layer, If it exceeds 15% by weight, a blocking phenomenon may occur between the films, resulting in damage to the appearance of the product and a change in the peeling force at a high level.
In the method for producing a polyester release film of the present invention, step 3) is a step for re-casting a polyester film having a release layer formed in step 2) to prepare a biaxially oriented polyester film.
At this time, the stretching in the step 3) is performed in the direction perpendicular to the uniaxial stretching direction, and the preferred stretching ratio is 3.0 to 7.0 times. After the stretching process, the polyester release film can be produced through heat fixation, curing, drying and the like.
The thickness of the biaxially stretched polyester film produced from the production method of the present invention is 5 to 300 탆, preferably 10 to 250 탆.
Particularly, in the manufacturing method of the present invention, the thickness of the release layer is optimized to 0.01 to 3 탆 after drying by the inline coating method. At this time, if the thickness after drying the silicone release layer is less than 0.01 mu m, there is a problem of an increase in the peeling force. Conversely, if the thickness is more than 3 mu m, there are problems such as uncured and blocking property and weak solvent resistance.
In the above, by optimizing the coating thickness of the silicone release layer in the production of the in-line coating type silicone release film and limiting the rate of change between peeling forces after a certain time elapses from the initial release force of the obtained silicone release film, Ensure appearance.
Furthermore, the silicone release film of the present invention can be applied to industrial fields such as a liquid crystal display, a plasma display, a personal digital assistant and navigation, an organic light emitting diode, a polymer light emitting diode and a polarizer, Film applications and optical applications.
Hereinafter, the present invention will be described in more detail with reference to Examples.
The present invention is intended to more specifically illustrate the present invention, and the scope of the present invention is not limited by these examples.
≪ Example 1 >
Step 1: Production of uniaxially stretched polyester film
A polyethylene terephthalate pellet having an intrinsic viscosity of 0.625 dl / g containing 20 ppm of amorphous spherical silica particles having an average particle diameter of 2.5 μm was thoroughly dried at 160 ° C. for 7 hours by using a vacuum drier, - An amorphous undrawn sheet was produced by closely adhering to a cooling drum through a die by electrostatic application. This was heated again and 3.5-fold stretching was carried out at 95 ° C in the film advancing direction to prepare a uniaxially stretched polyester film. Thereafter, the film surface to be coated was subjected to a corona discharge treatment to produce a polyester film.
Step 2: Production of biaxially stretched polyester film
16 parts by weight of a hydrotable polysiloxane, 0.15 part by weight of a surfactant represented by the following formula (1-2), and 50 ppm of a platinum chelate catalyst were added to 100 parts by weight of the alkenyl polysiloxane on the surface of the polyester film treated in the above step 1, To prepare a silicone release agent. After the application, the coating liquid applied at a temperature of 105-140 캜 in the tenter section was dried, stretched 3.5 times in the direction perpendicular to the direction of film advancement, and heat-treated at 200-250 캜 for 4 seconds to obtain a biaxially stretched silicone release film .
1-2
≪ Example 2 >
A silicone release film was prepared in the same manner as in Example 1 except that the surfactant content used in Example 1 was changed to 0.8 parts by weight.
≪ Example 3 >
A silicone release film was prepared in the same manner as in Example 1 except that 0.15 part by weight of a surfactant represented by the following general formula (1-3) was used instead of the surfactant used in Example 1.
1-3
≪ Comparative Example 1 &
A silicone release film was produced in the same manner as in Example 1 except that 0.15 part by weight of a surfactant having no phenylglycidyl ether group was contained in the terminal structure of the surfactant used in Example 1 .
≪ Comparative Example 2 &
A silicone release film was produced in the same manner as in Example 1 except that 0.15 part by weight of a conventional silicone surfactant represented by the following formula 2 was used instead of the surfactant used in Example 1 .
(2)
(Wherein, R 1 is CH 3, CH 2 CH 3 And (CH 2 ) 9 CH 3 , and R 2 is a polyether group. An alkyl group, an aryl group, an aryl group, an aryl group, an aryl group, an aryl group, an aryl group, an aryl group, a carboxyl group and a hydroxy group;
≪ Comparative Example 3 &
A silicone release film was produced in the same manner as in Example 1 except that the surfactant content used in Example 1 was changed to 0.01 part by weight.
≪ Comparative Example 4 &
A silicon release film was produced in the same manner as in Example 1 except that the surfactant content used in Example 1 was changed to 5 parts by weight.
<Experimental Example 1> Measurement of peeling force
In order to measure the peel strengths of the silicone release films prepared in Examples 1 and 2 and Comparative Examples 1 to 4, the silicone release film samples obtained in each were subjected to a heat treatment at 25 ° C and 55% RH (relative humidity) After a standard pressure-sensitive adhesive tape (TESA7475) was reciprocated once with a load of 2 kg, the sample was allowed to stand at 25 ° C and 55% RH for 1 day and then peeled off with a measuring instrument (product name: AR-1000 manufactured by Chem. Instrument) Respectively.
The peeling force (g / in) was calculated from the average value of five repeated measurements, with a sample size of 50 × 1,500 mm and a peel force measurement size of 250 × 1,500 mm at a 180 ° peel angle and a peel rate of 0.3 m / Respectively.
<Experimental Example 2> Measurement of residual adhesion rate
In order to measure the residual adhesion rates of the silicone release films prepared in Examples 1 and 2 and Comparative Examples 1 to 4, a stainless steel plate (SUS304) was first formed on a 50 mm × 150 mm blank film (PET) To prepare a blank sample.
The coated surface of the prepared PET blank film was subjected to round-pressing once with 2 Kg of polyester adhesive tape (NITTO31B), and then kept for 30 minutes.
Thereafter, the adhesive tape was peeled off and the peel force was measured 30 seconds after the blank film (untreated surface) was subjected to reciprocating pressing once at 2 kg. At this time, the test was carried out at 25 ° C and 55% RH (A). The peel strength was measured 30 seconds after the polyester adhesive tape (NITTO31B) was cyclically pressed once on the blank film (untreated surface) at 2 kg (B).
At this time, the measurement was carried out at a 180 deg. Peeling angle and a peeling rate of 0.3 m / min, and an average value of three repeated measurements was obtained to obtain a residual adhesion ratio (%).
From the measurement results, the residual adhesion rate (%) of the silicon release film was calculated as A / B x 100.
≪ Experimental Example 3 >
To evaluate the chemical resistance of the silicone release films prepared in Examples 1 to 2 and Comparative Examples 1 to 4, methyl ethyl ketone (MEK), toluene (TOLUENE) and isopropyl alcohol (IPA) The silicon release layer of the release film was strongly pushed to judge whether or not the silicon release layer had disappeared.
<Experimental Example 4> Evaluation of adhesion property
The silicon release film prepared in Examples 1 to 2 and Comparative Examples 1 to 4 was strongly pushed with a finger to perform a Rub-off test to determine the degree of detachment of the silicone release layer on the base layer, And the substrate layer (PET film).
<Experimental Example 5> Bubble defect level
5 cm x 5 cm samples of the silicone release films prepared in Examples 1 and 2 and Comparative Examples 1 to 4 were prepared and the area of the foam defects was measured with respect to the sample area.
The longest length of the bubble defects for each of the 5 cm × 5 cm samples was measured and the area was calculated by the circle, and the total was summed (1) (㎠). Thereafter, the bubble crystal level was measured using the formula for determining the bubble defect area below.
Equation 1
Bubble defect area (%) = (1) / 25 cm 2 × 100
As can be seen from the above Table 1, the silicone release films of Examples 1 and 2 according to the present invention have excellent coating appearance and excellent residual adhesion.
On the other hand, in the case of the release films of Comparative Examples 1 and 2 containing a surfactant containing no epoxy end and using a conventional silicone surfactant, the residual adhesion rate was somewhat reduced, and in particular, the coating appearance defect was remarkable .
Also, by using the specific surfactant of the present invention, it is possible to optimize the gypsum activator content by confirming the results that the coating films of Comparative Examples 3 to 4 have poor adverse effects on the appearance of the coating.
As described above, the present invention provides a method of forming a releasing layer on a polyester base layer by in-line coating a specific silicone releasing agent to form a release layer on the polyester base layer, A silicone release film was provided.
The silicone release film of the present invention contains a silicone alkoxylate surfactant containing an epoxy at its molecular end in a silicone release agent, thereby realizing a release film excellent in adhesion to a substrate and excellent in the appearance of a coating.
Further, since the silicone release film of the present invention satisfies excellent appearance characteristics and coating properties, the silicone release film of the present invention can be used for a liquid crystal display, a plasma display, a personal digital assistant and navigation, an organic light emitting diode, a polymer light emitting diode Emitting Diodes), and polarizing plates, films used for double-side coating or double-side bonding, and optical applications.
While the invention has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
Wherein the silicone release layer is formed by a silicone release agent containing a surfactant represented by the following Formula 1:
Formula 1
Wherein m is from 0 to 12, n is from 1 to 12, x is from 1 to 12, R is an ether group or ester group compound containing a C 1 -C 33 alkyl group, an epoxy, A and B are each a C 1 to C 15 alkyl group, and A and B do not have the same carbon number.
Formula 1
Wherein m, n, R, A and B are the same as defined in claim 1.
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| KR1020140132310A KR101556704B1 (en) | 2014-10-01 | 2014-10-01 | Silicone release film improved coating deffect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190143676A (en) * | 2018-06-21 | 2019-12-31 | 도레이첨단소재 주식회사 | Release film |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002129016A (en) | 2000-10-23 | 2002-05-09 | Wacker Asahikasei Silicone Co Ltd | Silicone composition |
| JP2005298689A (en) | 2004-04-13 | 2005-10-27 | Wacker Asahikasei Silicone Co Ltd | Silicone emulsion composition |
| JP2007308615A (en) | 2006-05-19 | 2007-11-29 | Dow Corning Toray Co Ltd | Polyethers, manufacturing method thereof, nonionic surfactant, emulsifier, and silicone-oil emulsion composition |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002129016A (en) | 2000-10-23 | 2002-05-09 | Wacker Asahikasei Silicone Co Ltd | Silicone composition |
| JP2005298689A (en) | 2004-04-13 | 2005-10-27 | Wacker Asahikasei Silicone Co Ltd | Silicone emulsion composition |
| JP2007308615A (en) | 2006-05-19 | 2007-11-29 | Dow Corning Toray Co Ltd | Polyethers, manufacturing method thereof, nonionic surfactant, emulsifier, and silicone-oil emulsion composition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190143676A (en) * | 2018-06-21 | 2019-12-31 | 도레이첨단소재 주식회사 | Release film |
| KR102132282B1 (en) * | 2018-06-21 | 2020-08-05 | 도레이첨단소재 주식회사 | Release film |
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