KR102474259B1 - the paste composition for thin film and cured product thereof - Google Patents

Abstract

The present invention relates to a peelable paste composition and a cured product thereof, and more specifically, to: a peelable paste composition containing 20 to 40 wt% of a styrenic elastomer, 40 to 65 wt% of an acrylic monomer, a curing initiator, an additive, and a solvent; and a cured product of the composition. According to the present invention, a peelable paste cured product from which a protective film can be easily removed without a separate chemical treatment can be manufactured.

Description

Peelable paste composition and cured product thereof {the paste composition for thin film and cured product thereof}

The present invention relates to a peelable paste composition and a cured product thereof, and more particularly, to form a protective film for protecting the surface of a cover glass of a display displaying an image using an ITO coated glass or an organic light emitting diode. It relates to a peelable paste composition and a cured product thereof.

Cover glass used in various mobile devices and electronic devices, ITO coated glass, and display cover glass that displays images using organic light emitting diodes (hereinafter referred to as OLED) are used in various ways, and accordingly, the cutting and chamfering processing of cover glass acting as an important factor.

In order to protect the glass from foreign matter and breakage during cutting and chamfering operations, scratches and breakage during process transfer, and contamination by inflow of foreign matter, a protective paste or a protective pressure-sensitive adhesive sheet ( It is common to perform a cutting process after adhering the film) to the cover glass.

In the case of the pressure-sensitive adhesive sheet for protection, additional costs such as frequent model changes and labor costs for attachment and removal are incurred. In addition, a certain level of film strength and adhesiveness are required to protect from an abrasive liquid containing an abrasive sprayed with a certain hydraulic pressure during cutting and chamfering processing. If the adhesiveness is insufficient, product contamination and defective products are produced due to the detachment of the protective film, and if the adhesiveness is above a certain level, the time required for peeling work increases and the adhesive is transferred, resulting in difficulties in additional removal.

In the case of the above protective paste, it is possible to respond to frequent model changes and has the advantage of being able to realize film strength and adhesiveness during cutting and chamfering processing, but a separate device for cleaning work such as chemical treatment when peeling off after coating the paste was needed

As a prior art to solve this problem, Korea Patent Publication No. 10-2008-0026376 (published on March 25, 2008) is a cover glass protective film to which a vinyl chloride-based resin as a paste material and additives capable of adding main characteristics are applied. It relates to a manufacturing method, more specifically, a method for manufacturing a cover glass protective film in which a polyvinyl resin, a plasticizer, and an additive are applied, screen-printed, and cured at a temperature of 160 to 230 ° C. for 1 to 8 minutes. have. However, it still needs to be hardened at a high temperature, and the elongation rate is high, so the protective film may be damaged during cutting and chamfering.

In addition, Korean Registered Patent Publication No. 10-1007559 (published on January 14, 2011) relates to a method for manufacturing a tab protection composition for thinning a liquid crystal display panel, and more specifically, a tab containing a styrene-based elastomer (TAP: liquid crystal electrode). B) A resin composition for forming a protective film by applying and drying a protective composition and protecting the electrode from various causes such as physical damage in the polishing process, contamination from abrasives or fine particles, and oxidation of the electrode due to excessive contact with moisture A manufacturing method is disclosed. However, it has the disadvantage that a large amount of organic solvent must be used and that it can be applied only to a localized area such as a tap (TAP: liquid crystal electrode part).

In addition, Japanese Unexamined Patent Publication 2001-335696 (2001.12.04. Publication date) discloses a fatty acid ester or polyalkylene glycol alkyl ether having a specific number of carbon atoms and polyoxyalkylene alkyl ether ) and the like are proposed a paste resin composition using a viscosity reducing agent. However, in the case of using such a viscosity reducing agent, a decreasing point effect is exhibited at a low shear, but there is no sufficient decreasing point effect at a high shear, and stability over time of the viscosity is insufficient. In addition, in order to obtain sufficient physical properties, the added amount of the viscosity reducing agent increases, and thus, the cost burden increases.

In accordance with the above circumstances, the present invention has high screen printing workability, adhesiveness after heat curing, migration resistance and film strength characteristics, does not require a large amount of organic solvents and viscosity reducers, and separate cleaning such as chemical treatment after cutting It is intended to provide a novel peelable paste composition that does not require work and a cured product thereof.

Korean Patent Publication No. 10-2008-0026376 (2008.03.25. Publication date) Korean Registered Patent Publication No. 10-1007559 (2011.01.14. Publication date) Japanese Laid-open Patent Publication 2001-335696 (2001.12.04. Publication date)

In order to solve the above problems, the present invention applies a styrene-based elastomer, an acrylic monomer, and an additive capable of imparting major properties to improve the properties such as screen printing workability, adhesion after thermal curing, migration resistance, and film strength. It is an object of the present invention to provide a peelable paste composition that does not require cleaning operations such as chemical treatment after cutting and a manufacturing method for a cured product thereof.

In order to solve the above problems, the present invention contains 20 to 40 wt% of a styrene-based elastomer; 40 to 65 wt% of an acrylic monomer; curing initiator; additive; And a solvent; it provides a peelable paste composition comprising a.

In one embodiment of the present invention, the styrene-based elastomer is styrene-butadiene-styrene (SBS), styrene-isoprene-styrene (SIS), styrene-ethylene-styrene (SES), styrene- It may be selected from the group consisting of propylene-styrene (SPS), styrene-ethylene/propylene-styrene (SEPS) and styrene-ethylene/butadiene-styrene (SEBS), and the acrylic monomer is methyl acrylate It may be selected from the group consisting of monomers, ethyl acrylate monomers, n-butyl acrylate monomers, 2-ethylhexyl acrylate monomers, acrylic acid monomers, and methyl methacrylate monomers.

In one embodiment of the present invention, the curing initiator includes one or more of compounds generating radicals by heat, and may be included in an amount of 0.1 to 3 wt% based on the total weight of the composition.

In addition, the peelable paste composition of the present invention may include at least one selected from the group consisting of an antistatic agent, an antifoaming agent, a dispersing agent, a defoaming agent, an inorganic particle, an adhesion promoter, a pigment, and a dye, as the additive, The content of may be 3 to 20 wt% based on the total weight of the composition.

In addition, the present invention is characterized in that the styrene-based elastomer, the acrylic monomer, the curing initiator and the additive are first mixed and dispersed to produce a first mixture, and the solvent is mixed with the first mixture, a peelable type A method for preparing a paste composition is provided.

In addition, the present invention is characterized in that the peelable paste composition according to the present invention is prepared by applying the peelable paste composition according to the present invention to the surface of a substrate and then thermally curing the applied peelable paste composition at a temperature range of 80 to 100 ° C. for 10 to 20 minutes. To provide a peelable paste cured product.

The peelable paste composition according to the present invention comprises 20 to 40 wt% of a styrene-based elastomer and 40 to 65 wt% of an acrylic monomer to form a peelable paste composition, so that it has excellent film hardness, strength, and adhesion when coated on a glass substrate. , there is an effect of forming a cured peelable paste that is easy to remove the protective film without a separate chemical treatment.

In addition, the peelable paste composition according to the present invention can be cured at a low temperature compared to conventional paste compositions, and thus has an effect of reducing the cost of forming a protective film on a glass substrate.

In addition, the peelable paste composition according to the present invention has excellent film properties even though it has a low viscosity compared to conventional paste compositions, thereby solving the limitations of the printing method, which was limited due to the high viscosity when printing on a glass substrate, and also There is an effect of reducing the amount of organic solvent required due to the low viscosity.

1 is a flowchart for explaining a method for producing a peelable paste composition and a method for producing a cured product thereof according to the present invention.

Hereinafter, preferred embodiments of a peelable paste composition and a cured product thereof according to the present invention will be described in detail so that those skilled in the art can easily practice the present invention with reference to the accompanying drawings. .

In describing the principles of preferred embodiments of the present invention in detail, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

In addition, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, so various alternatives can be made at the time of this application. It should be understood that there may be equivalents and variations.

The present invention relates to a peelable paste composition and a method for producing a cured product thereof, wherein the peelable paste composition includes a styrene-based elastomer and an acrylic monomer in a predetermined content range according to the present invention, thereby forming an excellent film when forming a protective film. While having hardness, strength, and adhesion, it has characteristics that the protective film can be easily removed without a separate chemical treatment when removing the protective film.

In addition, the peelable paste composition according to the present invention can be cured at a lower temperature than conventional peelable paste compositions.

In addition, since the viscosity is lower than that of conventional paste compositions containing styrene-based elastomer as a main component, the amount of organic solvent required for printing on a substrate is less than that of conventional high-viscosity paste compositions, which is economical and solves the problem of limited printing methods due to high viscosity. can be resolved

Hereinafter, a peelable paste composition according to the present invention and a method for preparing a cured product thereof will be described in detail.

The peelable paste composition according to the present invention includes a styrenic elastomer, an acrylic monomer, a curing initiator, an additive and a solvent.

The styrene-based elastomer provides flexibility to facilitate stripping of the protective film after curing, and is preferably included in an amount of 20 to 40 wt%, more preferably 25 to 35 wt%, based on the total weight of the composition. do.

When the styrenic elastomer is included in less than 20 wt%, a problem in that it is difficult to remove after curing occurs due to reduced flexibility, and when it exceeds 40 wt%, flexibility is excessively increased, causing a problem of easy breakage during removal after curing.

The styrene-based elastomer is styrene-butadiene-styrene (SBS), styrene-isoprene-styrene (SIS), styrene-ethylene-styrene (styrene-ethylene -styrene (SES), styrene-Propylene-styrene (SPS), styrene-ethylene/propylene-styrene (SEPS) and styrene-ethylene/butadiene -Includes at least one from the group consisting of styrene (Styrene-Ethylene/Butadiene-Styrene, SEBS).

The acrylic monomer provides surface hardness and strength to prevent surface damage during glass processing, and is preferably included in an amount of 40 to 65 wt%, more preferably 45 to 60 wt%, based on the total weight of the composition. included

When the acrylic monomer is included in less than 40 wt%, curing does not proceed, resulting in a problem of not providing sufficient surface hardness and strength, and when it exceeds 65 wt%, flexibility is lowered due to excessive surface hardness and strength increase, resulting in curing. There is a problem that cannot be removed afterwards.

The acrylic monomer is methyl acrylate monomer (MAM), ethyl acrylate monomer (EAM), n-butyl acrylate monomer (BAM), 2-ethylhexyl acrylate It includes at least one selected from the group consisting of a monomer (2-ethylhexyl acrylate monomer), an acrylic acid monomer, and a methyl methacrylate monomer (MMA). The curing initiator is a material that initiates a curing reaction of the composition by heat, and is included in an amount of 0.1 to 3 wt%, more preferably 0.5 to 1.5 wt%, based on the total weight of the composition.

When the curing initiator is included in less than 0.5 wt%, sufficient curing is not achieved, so a protective film cannot be formed, and when it exceeds 3 wt%, excessive curing initiator results in overcuring, resulting in low ductility and easy damage by external impact. problem arises

The curing initiator is preferably a compound that generates radicals by heat, such as an organic peroxide or an azo compound, and more preferably an organic peroxide. At this time, known organic peroxides such as dialkyl peroxides, acyl peroxides, hydroperoxides, peroxyketals, and peroxyesters can be used.

Specific examples include t-butylcumyl peroxide, dicumyl peroxide, di-t-butyl peroxide, 2,5-dimethyl-2,5-bis(t-butylperoxy)hexane, and 2,5 as the dialkyl peroxide. -Dimethyl-2,5-bis(t-butylperoxy)hexyne-3 etc. are mentioned, Benzoyl peroxide etc. are mentioned as an acyl peroxide, 1,1-bis(t-butyl peroxyketal) peroxy)cyclohexane, 2,2-bis(4,4-dibutylperoxycyclohexyl)propane, etc., and t-butylperoxy-2-ethylhexanate, 2,5- dimethyl-2,5-bis(t-butylperoxy)hexane, 2,5-dimethyl-2,5-bis(benzoylperoxy)hexane, t-butylperoxybenzoate and the like, and hydroperoxides Examples include p-methane hydroperoxide, t-butyl hydroperoxide, and cumene hydroperoxide.

These organic peroxides are preferably selected so that the storage stability and curability of the thermosetting resin composition are balanced. These curing initiators may be used alone or in combination of two or more.

The additive is a material added to improve or add functionality, and the additive may be at least one selected from the group consisting of an antistatic agent, an antifoaming agent, a dispersing agent, a defoaming agent, an inorganic particle, an adhesion promoter, a pigment, and a dye.

The additive is preferably included in an amount of 3 to 20 wt%, more preferably 5 to 15 wt%, based on the total weight of the composition.

In the above additives, the antifoaming agent and the antifoaming agent are used to prevent the hardness from being lowered by removing air bubbles contained therein in the process of forming the cured product, and are each added in an amount of 0.1 to 5 wt% based on the total weight of the composition. It may be, more preferably 0.5 to 3 wt%.

At this time, the antifoaming agent may contain acrylate and serve to volatilize air bubbles floated to the surface into the protective film, and the antifoaming agent may contain silane so that air bubbles inside the protective film It can play a role in merging with each other and at the same time levitating to the surface.

In addition, in the additive, the antistatic agent is to remove static electricity generated during the process of manufacturing the display device and static electricity generated during the removal of the cured material, and may be included in an amount of 0.1 to 5 wt% based on the total weight of the composition, , more preferably 0.5 to 4 wt%.

In this case, the antistatic agent may include a hybrid compound in which a polymer and an ionic compound are combined.

In addition, in the above additives, inorganic particles are added to improve the stability of the paste composition before curing and the dimensional stability of the cured product.

In this case, the inorganic particles may be any one selected from the group consisting of talc, zinc oxide, zirconia, silicon dioxide, titanium dioxide, alumina, calcium sulfate, barium sulfate, calcium carbonate, fumed silica, and mixtures thereof.

The solvent is a material added to adjust the viscosity of the paste composition, and is preferably included in an amount of 1 to 20 wt%, more preferably 1 to 15 wt%, based on the total weight of the composition.

When the solvent is included in less than 1 wt%, the viscosity increases, resulting in a problem that the paste does not roll during screen printing, and when it exceeds 20 wt%, the viscosity decreases, resulting in a problem of the paste flowing down during screen printing. Occurs.

Examples of the solvent include hydrocarbons such as benzene, toluene, (xylene)xylene, cyclohexane, and n-hexane; ketones such as acetone, methyl ethyl ketone, and methyl isobutyl ketone; esters such as ethyl acetate, acetic acid, n-butyl, and propylene glycol; Alcohols such as methanol, isopropanol, n-butanol, butyl cellosolve, and butyl casbitol; one or more compounds selected from the group consisting of may be used.

1 is a flowchart for explaining a method for producing a peelable paste composition and a method for producing a cured product thereof according to the present invention.

As shown therein, the peelable paste composition according to the present invention first mixes and disperses the styrenic elastomer, the acrylic monomer, the curing initiator, and the additives to form a first mixture, and in the first mixture The peelable paste composition according to the present invention prepared by mixing the above solvents is coated on the surface of a glass substrate through a screen printing method, and then thermally cured at a temperature range of 80 to 100 ° C. for 10 to 20 minutes Thus, a cured product of a peelable paste composition can be prepared.

Hereinafter, the present invention will be described in more detail through examples. Since these examples are intended to illustrate the present invention only, the scope of the present invention should not be construed as being limited by these examples.

Example 1

SEBS (Styrene-Ethylene/Butadiene-Styrene, Kraton) 20 wt% as a styrenic elastomer, 2-EHA (2-Ethylhehexyl acrylate monomer, Sigma-Ardrich) 55 wt% as an acrylic monomer, benzoyil peroxide as a curing initiator , Merck) 1 wt%, silane-containing additive (Airex 920, EVONIK) 1 wt%, silane-containing adhesion promoter (Glycidoxypropyltrimethoxysilane, DOW) 1 wt%, silica (Silica)-containing After mixing 3 wt% of an inorganic filler (hydrophobic fumed silica, EVONIK), dispersion was performed using a 3-million mill.

A peelable paste composition was prepared by mixing xylene (remaining amount with respect to 100 wt% of the composition) as an organic solvent in the dispersed mixture.

Subsequently, the prepared mixed and peelable paste composition was printed on a glass substrate and then cured at 90° C. for 15 minutes to form a cured product.

Example 2

A peelable paste composition was prepared in the same manner as in Example 1, except that 30 wt% of SEBS (Styrene-Ethylene/Butadiene-Styrene) was included as a styrene-based elastomer, printed on a glass substrate, and then cured. A cured product was formed.

Example 3

As a styrene-based elastomer, 40 wt% of SEBS (Styrene-Ethylene/Butadiene-Styrene) and 1 wt% of silica-containing inorganic filler (Hydrophobic fumed silica, EVONIK) A peelable paste composition was prepared in the same manner, printed on a glass substrate, and then cured to form a cured product.

Example 4

25 wt% of SEBS (Styrene-Ethylene/Butadiene-Styrene, Kraton) as a styrenic elastomer, and 40 wt% of 2-EHA (2-Ethylhehexyl acrylate monomer, Sigma-Ardrich) as an acrylic monomer. A peelable paste composition was prepared in the same manner as in 1, printed on a glass substrate, and then cured to form a cured product.

Example 5

A peelable paste composition was prepared in the same manner as in Example 4 except that 50 wt% of 2-EHA (2-Ethylhexyl acrylate monomer, Sigma-Ardrich) was included as an acrylic monomer, and after printing it on a glass substrate, Cured to form a cured product.

Example 6

A peelable paste composition was prepared in the same manner as in Example 4, except that 2-EHA (2-Ethylhexyl acrylate monomer, Sigma-Ardrich) was included in 65 wt% as an acrylic monomer, and then printed on a glass substrate. Cured to form a cured product.

Comparative Example 1

Does not contain styrenic elastomer, 90 wt% of 2-EHA (2-Ethylhexyl acrylate monomer, Sigma-Ardrich) as an acrylic monomer, 1 wt% of Benzoyl peroxide (Merck) as a curing initiator, Silane 1 wt% of additives (Airex 920, EVONIK), 1 wt% of adhesion promoter (Glycidoxypropyltrimethoxysilane, DOW) containing silane, and 3 wt% of inorganic filler (Hydrophobic fumed silica, EVONIK) containing silica After % mixing, dispersion was carried out using a 3-mill.

A peelable paste composition was prepared by mixing xylene (remaining amount with respect to 100 wt% of the composition) as an organic solvent in the dispersed mixture.

Subsequently, the prepared mixed and peelable paste composition was printed on a glass substrate and then cured at 90° C. for 15 minutes to form a cured product.

Comparative Example 2

Comparative Example 1, except that 15 wt% of SEBS (Styrene-Ethylene/Butadiene-Styrene, Kraton) as a styrenic elastomer and 45 wt% of 2-EHA (2-Ethylhehexyl acrylate monomer, Sigma-Ardrich) as an acrylic monomer A peelable paste composition was prepared in the same manner as, printed on a glass substrate, and then cured to form a cured product.

Comparative Example 3

Comparative Example 1, except that 45 wt% of SEBS (Styrene-Ethylene/Butadiene-Styrene, Kraton) as a styrenic elastomer and 45 wt% of 2-EHA (2-Ethylhehexyl acrylate monomer, Sigma-Ardrich) as an acrylic monomer A peelable paste composition was prepared in the same manner as, printed on a glass substrate, and then cured to form a cured product.

Comparative Example 4

Comparative Example 1, except that 25 wt% of SEBS (Styrene-Ethylene/Butadiene-Styrene, Kraton) as a styrenic elastomer and 35 wt% of 2-EHA (2-Ethylhehexyl acrylate monomer, Sigma-Ardrich) as an acrylic monomer A peelable paste composition was prepared in the same manner as, printed on a glass substrate, and then cured to form a cured product.

Comparative Example 5

Inorganic filler containing 25 wt% of SEBS (Styrene-Ethylene/Butadiene-Styrene, Kraton) as a styrenic elastomer, 70 wt% of 2-EHA (2-Ethylhehexyl acrylate monomer, Sigma-Ardrich) as an acrylic monomer, and silica (Silica) (Hydrophobic fumed silica, EVONIK) A peelable paste composition was prepared in the same manner as in Comparative Example 1, except that it contained 1 wt%, printed on a glass substrate, and then cured to form a cured product.

Comparative Example 6

A peelable paste composition was prepared in the same manner as in Comparative Example 1, except that the acrylic monomer was not included and SEBS (Styrene-Ethylene/Butadiene-Styrene, Kraton) was included as 90 wt% as a styrene-based elastomer, and the composition was prepared on a glass substrate. After printing on it, it was cured to form a cured product.

Experimental Example 1

The viscosity of the paste compositions for thin films prepared in Examples 1 to 6 and Comparative Examples 1 to 6 and the thickness, adhesive strength, pencil hardness and surface resistance of cured products obtained by printing the paste compositions for thin films on a glass substrate and curing were measured by the following methods. and are shown in Tables 1 to 3.

<Evaluation of physical properties>

(1) Viscosity measurement: The viscosity of the composition was measured using a viscometer (Brookfield LV).

(2) Thickness measurement: measured using a micrometer (Mitsutoyo, MDC-25PJ).

(3) Measurement of pencil hardness: When the surface of the cured material was scratched using a Mitsu-Bishi Uni Pencil, the hardness of the specimen with scratches was confirmed.

(4) Measurement of surface resistance: An initial resistance value was measured by contacting the cured product formed on the glass substrate with a resistance tester (Agilent 4339B).

(5) Adhesion measurement: After coating and curing in a width of 0.5 mm on a glass (20x60 mm), the adhesive force required when removing the coating film from the glass was measured using a Push-Pull Gauge (SHIMPO FGJN-5).

division SEBS
(wt%) Acryl
monomer
(wt%) Solvent viscosity
(cPs) thickness
(um) pencil hardness adhesiveness
(gf/in) Example 1 20 55 Xylene 10980 29 H 102 Example 2 30 55 Xylene 14700 30 H 108 Example 3 40 55 Xylene 17940 30 H 115 Example 4 25 40 Xylene 15810 31 H 107 Example 5 25 50 Xylene 13050 31 H 104 Example 6 25 65 Xylene 12990 31 H 103 Comparative Example 1 0 90 Xylene 300 - H - Comparative Example 2 15 45 Xylene 9360 27 H 54 Comparative Example 3 45 45 Xylene 30600 33 <H 121 Comparative Example 4 25 35 Xylene 25800 32 <H 107 Comparative Example 5 25 70 Xylene 9540 27 >H 42 Comparative Example 6 90 0 Xylene 99800 - <H >1000

As shown in Table 1, the viscosity of the peelable paste compositions of Examples 1 to 6 was found to be 10,980 to 17,940 cPs, and the cured product formed therefrom had a thickness of 29 to 31 um, which was within the standard range of 10,000 to 20,000 cPs. It was confirmed that the cured products formed from the peelable paste compositions of Examples 1 to 6 had adhesive strength of 96 to 115 gf/in, and pencil hardness was H or higher. It was confirmed that it was included in the range of 90 gf / in or more, which is the standard range.

As shown in Table 1, from the viewpoint of screen printing workability, the low viscosity of less than 10000 cPs such as Comparative Examples 1, 2, and 5 causes the paste to flow down during printing, and a uniform coating film cannot be formed on the glass surface. .

In addition, excessive viscosity exceeding 20000 cPs as in Comparative Examples 3, 4 and 6 causes a problem in that excessive thickness is formed due to difficult paste rolling by a squeegee during screen printing. When a coating film is formed with an excessive thickness, the volatility of the solvent decreases and it takes a relatively long time to cure.

When the physical properties are compared after curing, when the content of the components is out of the standard range, as in Comparative Examples 2 to 5, problems arise in that adhesive strength and pencil hardness are not implemented. In the case of adhesive force, Examples 1 to 5 are suitable, and if peeling is not caused by excessive adhesive force as in Comparative Example 6, the effect mentioned in the present invention cannot be implemented. In the case of low adhesive strength as in Comparative Examples 1 to 5, detachment may occur during the process.

division target value Measures Example 2 surface resistance (Ω Early ≤10 ¹³ ≤10 ¹¹ reliability
(85℃85%RH_240hr) ≤10 ¹³ ≤10 ¹¹ acid resistance Soaking
3% H ₂ SO ₄ @Aq._72hr no change no change

As shown in Table 2, it was confirmed that there was no change in the initial resistance value of the cured product of Example 2 and the resistance value after being left for 240 hr under the condition of 85° C./85%. In addition, it was confirmed that damage or peeling of the coating film did not occur after 72 hours of immersion in a 3% sulfuric acid (H ₂ SO ₄ ) aqueous solution.

Therefore, it was confirmed that when a protective film is formed using the paste composition for a thin film according to the present invention and a cured product thereof, the glass original plate can be protected under any process conditions and can be easily removed after the process is completed.

The present invention has been described above with reference to the accompanying drawings, but this is merely exemplary, and those skilled in the art to which the present invention belongs will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the technical protection scope of the present invention should be determined by the claims below.

Claims (9)

20 to 40 wt% of a styrenic elastomer;
40 to 65 wt% of an acrylic monomer;
0.5 to 1.5 wt% of a cure initiator;
additive; and
A peelable paste composition comprising a solvent; According to claim 1,
The styrene-based elastomer,
Styrene-butadiene-styrene (SBS), styrene-isoprene-styrene (SIS), styrene-ethylene-styrene (SES), styrene-propylene-styrene (SPS), styrene-ethylene/propylene - A peelable paste composition comprising at least one selected from the group consisting of styrene (SEPS) and styrene-ethylene/butadiene-styrene (SEBS). According to claim 1,
The acrylic monomer,
Characterized in that it comprises at least one selected from the group consisting of methyl acrylate monomer, ethyl acrylate monomer, n-butyl acrylate monomer, 2-ethylhexyl acrylate monomer, acrylic acid monomer and methyl methacrylate monomer, peeling mold paste composition. delete According to claim 1,
The curing initiator,
A peelable paste composition comprising at least one of compounds generating radicals by heat. According to claim 1,
The additive is
An antistatic agent, an antifoaming agent, a dispersing agent, a defoaming agent, an inorganic particle, an adhesion promoter, a peelable paste composition characterized in that it further comprises at least one selected from the group consisting of pigments and dyes. According to claim 6,
The additive is
Characterized in that it is included in 3 to 20 wt% based on the total weight of the composition, a peelable paste composition. In the method for producing the peelable paste composition of any one of claims 1 to 3 and 5 to 7,
A method for producing a peelable paste composition, characterized in that the styrenic elastomer, the acrylic monomer, the curing initiator and the additive are firstly mixed and dispersed to form a first mixture, and the solvent is mixed with the first mixture. . After applying the peelable paste composition according to any one of claims 1 to 3 and 5 to 7 on the surface of a substrate, the coated peelable paste composition is heated in a temperature range of 80 to 100 ° C. from 10 to 20 ° C. Characterized in that it is produced by thermal curing for minutes, a peelable paste cured product.

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