KR100774821B1 - Thermoplastic resin composition having improved heat resistance, gloss of metal deposition and elongation - Google Patents

Abstract

A thermoplastic resin composition is provided to ensure high heat resistance, excellent gloss after metallizing and high elongation, so that the resin composition is useful for producing various parts in cars or electric/electronic appliances. A thermoplastic resin composition comprises: (A) 15-30 parts by weight of a graft acrylonitrile-butadiene-styrene copolymer; (B) 60-80 parts by weight of an alpha-methylstyrene-acrylonitrile copolymer; (C) 10-20 parts by weight of a polycarbonate resin represented by the following formula 1; and (D) 1-10 parts by weight of a resin blend containing (d1) a low-viscosity polystyrene-acrylonitrile-methyl methacrylate(SAMMA) terpolymer having a melt flow index of 55-65g/10 min. at 220deg.C under a load of 10kg and (d2) a high-viscosity SAMMA terpolymer having a melt flow index of 5-15g/10 min. at 220deg.C under a load of 10kg.

Description

Thermoplastic composition with excellent heat resistance, deposition gloss and elongation {THERMOPLASTIC RESIN COMPOSITION HAVING IMPROVED HEAT RESISTANCE, GLOSS OF METAL DEPOSITION AND ELONGATION}

The present invention relates to a thermoplastic resin composition, and more particularly, to a thermoplastic resin composition having high heat resistance and excellent deposition gloss and elongation.

Generally, heat-resistant acrylonitrile-butadiene-styrene (hereinafter referred to as 'ABS') resin having excellent impact resistance, processability, and chemical resistance is used for automobile interior and exterior materials, electric / electronic device parts, and office equipment. It is used in various ways.

ABS resin, which is used for a dual lamp housing, is increasingly required for high performance heat-resistant resin, and as the thickness of the product becomes thinner, more tough properties are required. In particular, ABS resin used as a vehicle taillight lamp is subjected to the coating and aluminum deposition process, such a coating process has a problem that pollutes the environment and increases the manufacturing cost.

Therefore, in order to increase the efficiency of post-processing and to reduce environmental pollution, the conventional coating process is omitted, and the coating process is carried out to deposit aluminum on the injection molding. However, in the case of uncoated deposition, the reflectance of the light on the deposition surface after deposition tends to be lower than that of the existing coating method. To overcome this problem, the surface gloss of the injection molded product should be excellent, and the deformation caused by heat generated in the bulb is required. There should be no.

First, in order to prevent thermal deformation, the ABS resin should have excellent heat resistance. As such a method, a method of kneading a heat resistant copolymer into a graft ABS copolymer to produce a heat resistant ABS resin is used. US Patent No. 3,111,501 discloses a method for replacing part or all of styrene with α-methyl styrene having excellent heat resistance, and US Patent No. 4,567, 233 uses N-phenyl maleimide to prepare a heat-resistant reinforcing agent for kneading. A method for preparing an imide substituted copolymer is disclosed. However, the heat-resistant ABS resin produced by the above method is excellent in heat resistance, but has a disadvantage in that the reflectance of light is low when uncoated aluminum deposition.

U.S. Patent No. 4,579,909 discloses a method of improving physical properties such as impact strength and flexural strength through a ternary blend of a thermoplastic resin, a poly methyl methacrylate resin, and a polycarbonate resin. However, there is a disadvantage that the heat resistance is not suitable for use in the lamp housing.

Korean Patent Laid-Open Publication No. 2002-0087176 discloses a polyester resin composition which is used for reflecting aluminum headlamps because of improved aluminum deposition property. Although the patent requires heat resistance of 200 ° C. or higher, it is not economical to use for automobile tail light lamps and has many problems in processing.

In addition, US Patent No. 5,128,409 discloses a method of mixing a polymethyl methacrylate resin in a thermoplastic resin and a polycarbonate resin, but the method has the advantage that the weld line strength is increased, but the heat resistance and Physical properties such as gloss are not mentioned.

In order to solve the problems of the prior art as described above, an object of the present invention is to provide a thermoplastic resin composition having a high heat resistance characteristics and excellent deposition gloss and elongation.

The above and other objects of the present invention can be achieved by the present invention described below.

In order to achieve the above object, the present invention (A) graft ABS copolymer 15 to 30 parts by weight; (B) 60 to 80 parts by weight of α-methylstyrene copolymer; (C) 10 to 20 parts by weight of the aromatic polycarbonate resin; And (D) 1 to 10 parts by weight of a resin in which a low viscosity polystyrene-acrylonitrile-methyl methacrylate terpolymer (d1) and a high viscosity polystyrene-acrylonitrile-methyl methacrylate terpolymer (d2) are mixed; It provides a thermoplastic resin composition comprising a.

Hereinafter, the present invention will be described in detail.

(A) Graft ABS Copolymer

The graft ABS copolymer of the present invention has an average particle diameter of 800 to 1500 kPa, 10 to 40 parts by weight of polybutadiene rubber latex having a gel content of 80 to 90%, an average particle diameter of 2500 to 3500 kPa and a gel content of 80 to 90 15 to 30 parts by weight of polybutadiene rubber latex, 15 to 30 parts by weight of aromatic vinyl compound and 10 to 25 parts by weight of vinyl cyan compound are prepared by graft reaction.

As said aromatic vinyl compound, styrene, (alpha) -methylstyrene, (alpha)-ethylstyrene, or p-methylstyrene, etc. can be used individually or in mixture of 2 or more types.

As the vinyl cyan compound, acrylonitrile, methacrylonitrile, ethacrylonitrile, or the like may be used alone or in combination of two or more thereof.

The graft ABS copolymer may be included in 15 to 30 parts by weight of the thermoplastic resin composition of the present invention. When included in the content does not decrease the physical properties, there is an excellent flow properties.

(B) α-methylstyrene copolymer

The α-methylstyrene copolymer of the present invention is prepared by copolymerizing 50 to 80 parts by weight of α-methylstyrene (AMS) monomer and 20 to 50 parts by weight of acrylonitrile (AN) monomer.

In the method for producing the α-methylstyrene copolymer, bulk polymerization is preferable.

The α-methylstyrene copolymer may be included in the thermoplastic resin composition of the present invention in an amount of 60 to 80 parts by weight. When included in the content has an excellent heat resistance and physical properties.

(C) aromatic polycarbonate resin

The aromatic polycarbonate resin of the present invention is a high viscosity resin having a specific gravity of 1.0 to 2.0 kg / m 3 and a fluidity of 3 to 10 g / 10 min at a load of 300 ° C. and 1.2 kg. When using the said high viscosity resin, there exists an effect that a fall of a physical property does not occur.

The aromatic polycarbonate resin may be included in 10 to 20 parts by weight of the thermoplastic resin composition of the present invention. When it is included in the content, there is an excellent effect of physical properties without raising the manufacturing cost.

(D) polystyrene-acrylonitrile-methylmethacrylate terpolymer (SAMMA) mixed resin

The polystyrene-acrylonitrile-methylmethacrylate terpolymer (SAMMA) of the present invention is a low viscosity polystyrene-acrylonitrile-methylmethacrylate terpolymer (d1) and a high viscosity polystyrene-acrylonitrile-methylmethacrylate Terpolymer (d2) is produced respectively, and it is resin which mixed them.

Polystyrene-acrylonitrile-methyl methacrylate terpolymer (SAMMA) is 10 to 20 parts by weight of styrene monomer, 40 to 60 parts by weight of acrylate monomer, 20 to 30 parts by weight of acrylonitrile monomer and reaction medium 20 It is prepared by polymerization to 30 parts by weight.

The styrene monomer is preferably used in 10 to 20 parts by weight. When used in the above content, the viscosity of the reactants does not increase, the processability and fluidity of the produced product is not lowered, the refractive index is lowered, there is an excellent transparency effect.

The acrylate monomer is preferably used in 40 to 60 parts by weight. When used in the above content, there is no phenomenon in which the viscosity of the reactants is sharply increased, and the refractive index and the haze are lowered.

The acrylonitrile-based monomer is preferably used in 20 to 30 parts by weight. When used in the above content does not occur heat discoloration, there is an effect of excellent chemical resistance.

The reaction medium is preferably used in 20 to 30 parts by weight. When used in the above content, there is no phenomenon in which the viscosity of the reactants is sharply increased, and the molecular weight is high and the productivity is increased.

While introducing the above components into the reactor, the polymerization is first carried out for 2 to 4 hours at a reaction temperature of 120 to 140 ℃, and then polymerized for 2 to 4 hours at a reaction temperature of 130 to 150 ℃ a continuous block polymerization method SAMMA terpolymer can be prepared.

The low viscosity SAMMA terpolymer (d1) is distributed on the outside of the resin when blended to improve glossiness and surface energy, and the high viscosity SAMMA terpolymer (d2) is combined with an aromatic polycarbonate resin. It acts as a compatibilizer of the graft ABS copolymer and has an effect of improving impact resistance.

The low viscosity SAMMA terpolymer (d1) comprises 30 to 35% by weight of styrene, 35 to 45% by weight of methyl methacrylate and 25 to 30% by weight of acrylonitrile and has a flowability of 55 ° C. at 220 ° C. and a 10 kg load. To 65 g / 10 min.

The high viscosity SAMMA terpolymer (d2) comprises 20 to 25% by weight of styrene, 50 to 70% by weight of methyl methacrylate and 15 to 25% by weight of acrylonitrile and has a fluidity of 5 to 5 at a load of 220 ° C. and 10 kg. 15 g / 10 min.

The SAMMA terpolymer mixed resin may be used by mixing 40 to 60% by weight of the low viscosity SAMMA terpolymer (d1) and 60 to 40% by weight of the high viscosity SAMMA terpolymer (d2), and preferably, the low viscosity SAMMA terpolymer 50 wt% of the copolymer (d1) and 50 wt% of the high viscosity SAMMA terpolymer (d2) are mixed and used.

The SAMMA terpolymer mixed resin may be included in 1 to 10 parts by weight of the thermoplastic resin composition of the present invention. When included in the content has an excellent physical properties and heat resistance.

The thermoplastic resin composition of the present invention is mixed with the graft ABS copolymer, α-methylstyrene copolymer, aromatic polycarbonate resin and polystyrene-acrylonitrile-methyl methacrylate terpolymer mixed resin and extrusion molded in a conventional manner. Can be prepared.

The thermoplastic resin composition may further include 1 to 5 parts by weight of PMMA-g-GMA (Poly (methyl methacrylate) -g-glycidyl methacrylate) as an additive for improving elongation based on 100 parts by weight of the thermoplastic resin composition. When included in the content has an effect that the elongation is further improved.

The thermoplastic resin composition may further include one or more additives selected from the group consisting of antioxidants, stabilizers and lubricants as necessary.

In the preparation of the thermoplastic resin composition, the antioxidant plays a role of preventing oxidation that may occur during mixing, extrusion, and injection molding, and serves as a phenol-based primary antioxidant and peroxide decomposing agent, which serves as a chain inhibitor. A phosphite secondary antioxidant can be used.

The antioxidant may be included in an amount of 0.1 to 5 parts by weight, preferably 0.1 to 2 parts by weight, based on 100 parts by weight of the thermoplastic resin composition. When included in the content has the effect of improving the thermal stability.

The stabilizer serves to inhibit or block thermal decomposition of the plastic, it may be used a phosphite-based, stearate-based or phenol-based stabilizer.

The stabilizer may be included in 0.1 to 5 parts by weight, preferably 0.1 to 2 parts by weight based on 100 parts by weight of the thermoplastic resin composition. When included in the content it is effective to block thermal decomposition and excellent thermal stability.

The lubricant is to play a role of smoothing the surface of the final product of the thermoplastic resin composition to improve processability, it is possible to selectively use the external lubricant and the internal lubricant, it is preferable to use a stearamide-based lubricant. The external lubricant is to reduce the extrusion load between the polymer melt in the extruder and the metal surface, the internal lubricant is present in the polymer to reduce the viscosity of the resin itself serves to improve the flow.

The lubricant may be included in an amount of 0.1 to 10 parts by weight, preferably 0.5 to 5 parts by weight, based on 100 parts by weight of the thermoplastic resin composition. When included in the above content, the mold release property does not decrease from the mold during injection molding, so that no phenomenon such as mold cracking or whitening occurs, rubber particles are uniformly dispersed in the resin composition in the extrusion process, and fluidity, impact resistance and heat resistance This has an excellent effect.

The thermoplastic resin composition may be widely used for various parts of automobiles, electrical and electronic parts.

Hereinafter, preferred examples are provided to aid the understanding of the present invention, but the following examples are merely for exemplifying the present invention, and it will be apparent to those skilled in the art that various changes and modifications can be made within the scope and spirit of the present invention. It is natural that such variations and modifications fall within the scope of the appended claims.

EXAMPLE

(A) Preparation of Graft ABS Copolymer

30 parts by weight of polybutadiene rubber latex with an average particle diameter of 1000 mm and gel content of 80%, 30 parts by weight of polybutadiene rubber latex with an average particle diameter of 3000 mm and gel content of 80%, 65 parts by weight of ion-exchanged water, potassium rosinate 0.35 part by weight of an emulsifier, 0.1 part by weight of sodium ethylenediamine tetraacetate, 0.005 part by weight of ferrous sulfate, and 0.23 part by weight of formaldehyde sodium sulfoxide were added to a batch reactor, and the reaction temperature was raised to 70 ° C. 40 parts by weight of ion-exchanged water, 0.5 parts by weight of potassium rosin emulsifier, 19.2 parts by weight of styrene, 8.2 parts by weight of acrylonitrile, 0.3 parts by weight of t-dodecyl mercaptan, and 0.3 parts by weight of diisopropylene hydroperoxide After continuously adding for 2 hours, 10 parts by weight of ion-exchanged water, 0.1 parts by weight of potassium rosinate emulsifier, 9.6 parts by weight of styrene, 3.0 parts by weight of acrylonitrile, 0.1 parts by weight of t-dodecyl mercaptan, di 0.1 parts by weight of a mixed emulsion of isopropylene hydroperoxide was continuously added for 1 hour, and then the reaction temperature was raised to 80 ° C. and aged for 1 hour to terminate the reaction. At this time, the polymerization conversion rate was 97.5% by weight, solid coagulation content was 0.2%, graft rate was 37%.

The latex obtained was coagulated with an aqueous sulfuric acid solution, washed and dried to prepare a powder.

(B) Preparation of α-methylstyrene Copolymer

70 parts by weight of α-methylstyrene, 30 parts by weight of acrylonitrile, 30 parts by weight of toluene as a solvent, and 0.15 parts by weight of di-t-dodecylmercaptan with a molecular weight modifier were added to the reactor continuously so that the average reaction time was 3 hours. The reaction temperature was maintained at 148 ° C. The polymerization liquid discharged from the reactor was heated in a preheating bath, the unreacted monomer was volatilized in the volatilization tank, and the temperature of the polymer was maintained at 210.degree. C., and the SAN-based copolymer resin was processed into pellets using a polymer transfer pump extruder. .

(C) aromatic polycarbonate resin

Polycarbonate resin of grade CALIBER 302-5 manufactured by LG-DOW POLYCARBONATE was used. The polycarbonate resin of the CALIBER 302-5 is a grade enhanced with UV stabilizers, specific gravity of 1.20 kg / ㎥ and a high viscosity resin of 5 g / 10 min at 300 ℃, 1.2 kg load.

(D) Preparation of polystyrene-acrylonitrile-methyl methacrylate (SAMMA) terpolymer mixed resin

(d1) Preparation of low viscosity SAMMA terpolymer

24 parts by weight of styrene, 32 parts by weight of methyl methacrylate and 24 parts by weight of acrylonitrile were mixed with 20 parts by weight of toluene.

The mixture was introduced into the polymerization reactor for 3 hours at a reaction temperature of 140 ° C., followed by continuous bulk polymerization at 150 ° C. for 4 hours.

The prepared SAMMA terpolymer was a low viscosity resin, which included 30% by weight of styrene, 40% by weight of methyl methacrylate, and 30% by weight of acrylonitrile, and had a fluidity of 60 g / 10min at a load of 220 ° C. and 10 kg. .

(d2) Preparation of high viscosity SAMMA terpolymer

16 parts by weight of styrene, 48 parts by weight of methyl methacrylate and 16 parts by weight of acrylonitrile were mixed with 20 parts by weight of toluene.

The mixture was introduced into the polymerization reactor for 3 hours at a reaction temperature of 140 ° C., followed by continuous bulk polymerization at 150 ° C. for 4 hours.

The prepared SAMMA terpolymer was a high viscosity resin, including 20% by weight of styrene, 60% by weight of methyl methacrylate, and 20% by weight of acrylonitrile. The fluidity was 10 g / 10min at 220 ° C and 10 kg load.

Example 1

20 parts by weight of (A) graft ABS copolymer, (B) 65 parts by weight of α-methylstyrene copolymer, (C) 15 parts by weight of aromatic polycarbonate resin, (D) polystyrene-acrylonitrile-methyl methacrylate ( SAMMA) terpolymers (d1) 5 parts by weight of low viscosity SAMMA terpolymers, (d2) 5 parts by weight of high viscosity SAMMA terpolymers are added thereto, with 0.7 parts by weight of ethylene bis stearamide (EBA) as a stabilizer, 0.3 parts by weight of diphenyl isodecyl phosphate and 0.3 parts by weight of di-t-butyl phenyl phosphate were mixed with an antioxidant to prepare pellets at 260 ° C. using a twin screw extruder.

Example 2

Except for using an additive PMMA-g-GMA 3 parts by weight to improve the elongation in Example 1 was carried out in the same manner as in Example 1.

Comparative Example 1

Except that in Example 1 (D) polystyrene-acrylonitrile-methyl methacrylate (SAMMA) terpolymer mixed resin was used in the same manner as in Example 1.

Comparative Example 2

In Example 1, the (C) aromatic polycarbonate resin and (D) polystyrene-acrylonitrile-methyl methacrylate (SAMMA) terpolymer mixed resin are not used, but instead the trade name is DENKA-IP (MS-NB). The same procedure as in Example 1 was carried out except that 15 parts by weight of a heat enhancer in the N-phenylmaleimide (PMI) system (manufactured by DENKA, Japan) was used.

Comparative Example 3

In Example 1 (D) polystyrene-acrylonitrile-methyl methacrylate (SAMMA) terpolymer (d1) using a low viscosity SAMMA terpolymer 5 parts by weight, (d2) high viscosity SAMMA terpolymer The same procedure as in Example 1 was carried out except that it was not.

Comparative Example 4

In Example 1 (D) polystyrene-acrylonitrile-methyl methacrylate (SAMMA) terpolymer (d1) without using a low viscosity SAMMA terpolymer, (d2) 5 parts by weight of a high viscosity SAMMA terpolymer The same procedure as in Example 1 was carried out except for use.

[Test Example]

The thermoplastic resin compositions prepared in Examples and Comparative Examples were molded under the following molding conditions, and the physical properties thereof were measured. The results are shown in Table 1 below.

(1) Extrusion conditions: LEISTRITZ MICRO 27 GL-36D, 240 ~ 260 ℃

(2) Injection molding: ENGEL EC100 (80 TON), 240 ~ 260 ℃

(3) Heat deflection temperature (HDT): measured according to ASTM D-648.

(4) Impact strength: measured according to ASTM D-256.

(5) Elongation: measured in accordance with ASTM D-638.

(6) Glossiness: Measured according to ASTM D-523.

(7) Deposition method: The sputtering process, argon process pressure 5 mTorr, thickness 1 ㎛, process time 12 minutes 40 seconds

(8) Surface tension: Surface tension was calculated by measuring the polar nonpolar contact angle with the Contact Angle Measuring System.

division Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Heat resistance (℃, 1/4 ") 104.7 104.8 104.3 105.7 104.5 104.5 Elongation (%) 50 62 38 17 39 48 Impact Strength (J / m, 1/8 ") 130.3 130.4 77.9 58.8 77.0 130.0 Deposition Gloss (75 °) 176. 176.9 155.4 99.7 175.5 157.5 Surface tension (mN / m) 53.5 53.7 50.3 48.1 53.4 50.4

Through Table 1, the thermoplastic resin compositions of Examples 1 to 2 prepared according to the present invention do not use a resin in which a low viscosity SAMMA terpolymer and a high viscosity SAMMA terpolymer are mixed so that elongation, impact strength, and deposition glossiness are increased. Comparative Examples 1 and 2, the thermoplastic resin composition of Comparative Examples 3 and 4 in which the two properties of impact strength and deposition gloss were not harmonized by using low viscosity or high viscosity polystyrene-acrylonitrile-methyl methacrylate alone. In comparison with the elongation, the impact strength and the deposition gloss was excellent.

As described above, according to the present invention, there is an effect of providing a thermoplastic resin composition having high heat resistance and excellent deposition gloss and elongation.

Claims (11)

(A) 15 to 30 parts by weight of the graft ABS copolymer; (B) 60 to 80 parts by weight of a copolymer of α-methylstyrene and acrylonitrile; (C) 10 to 20 parts by weight of the polycarbonate resin represented by the following formula (1); And (D) Low viscosity polystyrene-acrylonitrile-methylmethacrylate terpolymer (d1) having a fluidity of 55 to 65 g / 10min at a load of 220 ° C. and 10 kg and a flow of 5 to 15 g / at a load of 220 ° C. and 10 kg It characterized in that it comprises a; 1 to 10 parts by weight of a resin in which a high viscosity polystyrene-acrylonitrile-methyl methacrylate terpolymer (d2) of 10 min is mixed; Thermoplastic resin composition. [Formula 1]

The method of claim 1, The (A) graft ABS copolymer has an average particle diameter of 800 to 1500 mm 3, a gel content of 80 to 90% of polybutadiene rubber latex 10 to 40 parts by weight, an average particle diameter of 2500 to 3500 mm 3 and a gel content of 80 to 15 to 30 parts by weight of 90% polybutadiene rubber latex, 15 to 30 parts by weight of aromatic vinyl compound, and 10 to 25 parts by weight of vinyl cyan compound were prepared by graft reaction. Thermoplastic resin composition. The method of claim 1, The copolymer of (B) α-methylstyrene and acrylonitrile is prepared by copolymerizing 50 to 80 parts by weight of α-methylstyrene (AMS) monomer and 20 to 50 parts by weight of acrylonitrile (AN) monomer. Thermoplastic resin composition. The method of claim 1, (C) the polycarbonate resin represented by the formula (1) has a specific gravity of 1.0 to 2.0 kg / ㎥, characterized in that the fluidity is a high viscosity resin of 3 to 10 g / 10min at 300 ℃, 1.2 kg load Thermoplastic resin composition. The method of claim 1, The polystyrene-acrylonitrile-methyl methacrylate terpolymer (D) may include 10 to 20 parts by weight of styrene monomer, 40 to 60 parts by weight of acrylate monomer, 20 to 30 parts by weight of acrylonitrile monomer and reaction medium. 20 to 30 parts by weight of the polymer, characterized in that prepared by Thermoplastic resin composition. The method according to claim 1 or 5, The low viscosity polystyrene-acrylonitrile-methyl methacrylate terpolymer having (d1) fluidity at 55 ° C. and 65 g / 10 min at a load of 220 ° C. and 10 kg has 30 to 35 wt% of styrene and 35 to 45 wt% of methyl methacrylate. % And 25 to 30% by weight of acrylonitrile Thermoplastic resin composition. The method according to claim 1 or 5, The (d2) high viscosity polystyrene-acrylonitrile-methyl methacrylate terpolymer having a fluidity of 5 ° C. to 15 g / 10 min at a load of 220 ° C. and 10 kg has 20 to 25 wt% of styrene and 50 to 70 wt% of methyl methacrylate. And 15 to 25% by weight of acrylonitrile. Thermoplastic resin composition. The method according to claim 1 or 5, The (D) low viscosity polystyrene-acrylonitrile-methylmethacrylate terpolymer (d1) having a flowability of 55 to 65 g / 10min at 220 ° C and a 10 kg load and a flowability of 5 to 15 g at a load of 220 ° C and 10 kg Resin mixed with a high viscosity polystyrene-acrylonitrile-methylmethacrylate terpolymer (d2) of 10 min has a low viscosity polystyrene-acrylonitrile having a fluidity of 55 to 65 g / 10 min at a load of 220 ° C. and a 10 kg load. 40 to 60% by weight of methyl methacrylate terpolymer and (d2) 60 to 40 weight of high viscosity polystyrene-acrylonitrile-methylmethacrylate terpolymer having a fluidity of 5 to 15 g / 10 min at a load of 220 ° C. and 10 kg Characterized in that blended in% Thermoplastic resin composition. The method of claim 1, The thermoplastic resin composition is a polymethyl methacrylate to a copolymer of the glycidyl methacrylate monomer grafted (PMMA-g-GMA, [Poly (methyl methacrylate) -g-glycidyl methacrylate]) 1 to 5 parts by weight Characterized in that it further comprises Thermoplastic resin composition. The method of claim 1, The thermoplastic resin composition further comprises at least one additive selected from the group consisting of antioxidants, stabilizers and lubricants. Thermoplastic resin composition. The method of claim 10, The additive is 0.1 to 5 parts by weight of antioxidant, 0.1 to 5 parts by weight of stabilizer and 0.1 to 10 parts by weight of lubricant based on 100 parts by weight of the thermoplastic resin composition Thermoplastic resin composition.