WO2021221429A1 - Thermoplastic resin composition and molded product using same - Google Patents

Abstract

The present invention relates to a thermoplastic resin composition and a molded product using same, the thermoplastic resin composition comprising: (A) 25 to 50 wt% of butadiene rubber modified aromatic vinyl-vinyl cyanide graft copolymer; (B) 30 to 50 wt% of aromatic vinyl-vinyl cyanide copolymer; and (C) 15 to 25 wt% of N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer.

Description

Thermoplastic resin composition and molded article using same

It relates to a thermoplastic resin composition and a molded article using the same.

Styrene-based resins, represented by acrylonitrile-butadiene-styrene copolymer (ABS) resins, are widely used in automobiles, home appliances, OA devices, etc. due to their excellent moldability, mechanical properties, appearance, secondary processability, and the like.

In particular, a molded article using a styrene-based resin may be applied to various products requiring painting/unpainted, for example, may be applied to interior/exterior materials for automobiles.

The existing vehicle rear lamp (rear lamp) has a separate left and right, but recently, it has become a trend for the rear lamp of the vehicle to have an integrated structure without separating the left and right.

Therefore, compared to the rear lamp of the existing vehicle, the rear lamp portion of the recent vehicle has more intermediate connecting portions connecting the left and right lamps. When manufactured by injection molding of the housing, excessive stress is likely to occur in a specific area, and thus, there is a problem in that chemical resistance is likely to occur in the corresponding area.

Accordingly, in order to reduce the stress in the injection molding process and to reduce the injection pressure, the styrene-based resin needs to have excellent flow characteristics.

Therefore, there is a need to develop a styrenic thermoplastic resin composition having excellent fluidity and heat resistance suitable for large-sized automobile lamp housings, and having excellent chemical resistance.

An object of the present invention is to provide a high-flowing thermoplastic resin composition excellent in both heat resistance and chemical resistance, and a molded article using the same.

One embodiment is (A) 25 to 50% by weight of a butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer, (B) 30 to 50% by weight of an aromatic vinyl-vinyl cyanide copolymer, and (C) N-phenyl maleate Provided is a thermoplastic resin composition comprising 15 to 25 wt% of a mid-maleic anhydride-styrene-acrylonitrile copolymer.

The (A) butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer is a core comprising a butadiene-based rubber polymer having an average particle diameter of 250 to 350 nm, and an aromatic vinyl compound and a vinyl cyanide compound are graft-polymerized onto the core. It may be a core-shell structure including a formed shell.

The (A) butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer may be an acrylonitrile-butadiene-styrene graft copolymer.

The (B) aromatic vinyl compound-vinyl cyanide compound copolymer has a weight average molecular weight of 90,000 to 100,000 g/mol, and may include 20 to 28 wt% of a component derived from a vinyl cyanide compound.

In the (B) aromatic vinyl compound-vinyl cyanide compound copolymer, the aromatic vinyl compound is styrene, α-methylstyrene, β-methylstyrene, pt-butylstyrene, ethylstyrene, vinylxylene, monochlorostyrene, dichlorostyrene, It may be selected from the group consisting of dibromostyrene, vinylnaphthalene, and combinations thereof.

In the (B) aromatic vinyl compound-vinyl cyanide compound copolymer, the vinyl cyanide compound may be selected from the group consisting of acrylonitrile, methacrylonitrile, fumaronitrile, and combinations thereof.

The (B) aromatic vinyl-vinyl cyanide copolymer may be a styrene-acrylonitrile copolymer.

The (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer may include 30 to 50 wt% of a component derived from N-phenyl maleimide.

The (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer comprises 35 to 45 wt% of N-phenyl maleimide-derived component, 1 to 5 wt% of maleic anhydride-derived component, and 45 wt% of styrene-derived component to 55% by weight, and 5 to 15% by weight of an acrylonitrile-derived component.

The (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer may have a weight average molecular weight of 100,000 to 150,000 g/mol.

The (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer may have a glass transition temperature (Tg) of 150 to 180°C.

The thermoplastic resin composition may further include at least one additive selected from a nucleating agent, a coupling agent, a filler, a plasticizer, a lubricant, a mold release agent, an antibacterial agent, a heat stabilizer, an antioxidant, a UV stabilizer, a flame retardant, an antistatic agent, and a colorant.

Another embodiment provides a molded article including the above-described thermoplastic resin composition.

The molded article may have a melt flow index of 10 to 15 g/10min measured at 220°C and a load of 10 kg according to ASTM D1238.

The molded article may have a heat deflection temperature (HDT) measured at 0.45 MPa according to ASTM D648 of 107° C. or higher.

The thermoplastic resin composition according to an embodiment and a molded article using the same can exhibit excellent chemical resistance while having excellent fluidity and heat resistance, and thus can be widely applied to various products used for painting and unpainting, for example, automotive exterior materials. , in particular, can be usefully applied to applications requiring heat resistance and/or chemical resistance, such as a housing for automobile lamps.

Hereinafter, embodiments of the present invention will be described in detail. However, this is presented as an example, and the present invention is not limited thereto, and the present invention is only defined by the appended claims.

As used herein, 'copolymerization' means block copolymerization or random copolymerization, and 'copolymer' means block copolymer or random copolymer.

In the present invention, unless otherwise specified, the term 'average particle diameter' is a volume average diameter, and means a Z-average particle diameter measured using a dynamic light scattering analyzer.

In the present invention, unless otherwise specified, a powder sample of 'weight average molecular weight' is dissolved in tetrahydrofuran (THF) and then measured using gel permeation chromatography (GPC, Agilent Technologies 1200 series) (column). indicates that Shodex's LF-804 was used, and the standard sample used was Shodex's polystyrene).

According to one embodiment, (A) 25 to 50% by weight of a butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer, (B) 30 to 50% by weight of an aromatic vinyl-vinyl cyanide copolymer, and (C) N- Provided is a thermoplastic resin composition comprising 15 to 25 wt% of a phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer.

Hereinafter, each component contained in the said thermoplastic resin composition is demonstrated in detail.

(A) Butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer

In one embodiment, (A) butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer imparts excellent impact resistance to the thermoplastic resin composition.

The average particle diameter of the rubber polymer of the (A) butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer is 250 nm or more, 260 nm or more, or 270 nm or more, and 350 nm or less, 340 nm or less, 330 nm or less, 320 nm or less, or 310 nm or less. When the average particle diameter of the rubber polymer satisfies the above range, the thermoplastic resin composition may secure excellent impact resistance and appearance characteristics.

In one embodiment, the (A) butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer is a core comprising a butadiene-based rubber polymer, and an aromatic vinyl compound and a vinyl cyanide compound are graft-polymerized onto the core. It may be a core-shell structure including a formed shell.

The (A) butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer is a butadiene-based rubber polymer by adding an anti-aromatic vinyl compound and a vinyl cyanide compound to the butadiene-based rubber polymer, and graft polymerization through conventional polymerization methods such as emulsion polymerization and bulk polymerization. can be manufactured.

The (A) butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer is 45 wt% or more, 48 wt% or more, 50 wt% or more, 53 wt% or more, or 55 wt% of the core based on 100 wt% or more, and 65% by weight or less, 63% by weight or less, or 60% by weight or less.

Meanwhile, in the shell, the aromatic vinyl compound and the vinyl cyanide compound may be copolymerized in a weight ratio of 6:4 to 8:2.

The butadiene-based rubbery polymer may be selected from the group consisting of butadiene rubbery polymers, butadiene-styrene rubbery polymers, butadiene-acrylonitrile rubbery polymers, butadiene-acrylate rubbery polymers, and mixtures thereof.

The aromatic vinyl compound may be selected from the group consisting of styrene, α-methylstyrene, β-methylstyrene, pt-butylstyrene, ethylstyrene, vinylxylene, monochlorostyrene, dichlorostyrene, dibromostyrene, vinylnaphthalene, and combinations thereof. may be selected.

The vinyl cyanide compound may be selected from the group consisting of acrylonitrile, methacrylonitrile, fumaronitrile, and combinations thereof.

The (A) butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer may be an acrylonitrile-butadiene-styrene graft copolymer.

On the other hand, based on 100 wt% of components (A) to (C), the (A) butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer is 25 wt% or more, 26 wt% or more, 27 wt% or more, 28 wt% or more, 29 wt% or more, 30 wt% or more, 31 wt% or more, or 32 wt% or more, and 50 wt% or less, 49 wt% or less, 48 wt% or less, 47 wt% or less, 46 wt% or more or less, or 45% by weight or less. When the (A) butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer is included in the above range, the thermoplastic resin composition can secure excellent impact resistance and appearance characteristics.

At this time, when the (A) butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer is included in an amount of less than 25% by weight, it is difficult for the thermoplastic resin composition to achieve excellent chemical resistance and high flowability, and when it exceeds 50% by weight There exists a possibility that the heat resistance of a thermoplastic resin composition may fall.

(B) Aromatic vinyl-vinyl cyanide copolymer

In one embodiment, (B) aromatic vinyl-vinyl cyanide copolymer provides excellent fluidity to the thermoplastic resin composition and performs a function of maintaining compatibility between components at a certain level.

The (B) aromatic vinyl-vinyl cyanide copolymer may include 20 to 28 wt% of a component derived from a vinyl cyanide compound. When the vinyl cyanide compound-derived component is included in an amount of less than 20% by weight, the fluidity of the thermoplastic resin composition may be increased, but there is a risk of lowering chemical resistance. Therefore, there is a need to include the vinyl cyanide compound-derived component in an appropriate range, and when included in an amount of 20 to 28% by weight, the thermoplastic resin composition having an appropriate level of excellent fluidity and excellent chemical resistance at the same time can provide

The (B) aromatic vinyl-vinyl cyanide copolymer may be a copolymer of a monomer mixture comprising 72 to 80 wt% of an aromatic vinyl compound and 20 to 28 wt% of a vinyl cyanide compound based on 100 wt%.

On the other hand, the (B) aromatic vinyl-vinyl cyanide copolymer has a weight average molecular weight (Mw) of 90,000 g/mol or more, 91,000 g/mol or more, 92,000 g/mol or more, or 93,000 g/mol or more, and 100,000 g/mol or more. mol or less, 99,000 g/mol or less, 98,000 g/mol or less, or 97,000 g/mol or less. When the weight average molecular weight (Mw) of the aromatic vinyl-vinyl cyanide copolymer (B) is within the above range, it is possible to provide a thermoplastic resin composition with improved fluidity and chemical resistance. In addition, the (B) aromatic vinyl-vinyl cyanide copolymer may have the above weight average molecular weight range by mixing two or more aromatic vinyl-vinyl cyanide copolymers having different weight average molecular weights.

In the (B) aromatic vinyl-vinyl cyanide copolymer, the aromatic vinyl compound is styrene, α-methylstyrene, β-methylstyrene, pt-butylstyrene, ethylstyrene, vinylxylene, monochlorostyrene, dichlorostyrene, dibro It may be selected from the group consisting of parent styrene, vinyl naphthalene, and combinations thereof.

In the (B) aromatic vinyl-vinyl cyanide copolymer, the vinyl cyanide compound may be selected from the group consisting of acrylonitrile, methacrylonitrile, fumaronitrile, and combinations thereof.

The (B) aromatic vinyl-vinyl cyanide copolymer may be a styrene-acrylonitrile copolymer.

On the other hand, based on 100 wt% of components (A) to (C), the (B) aromatic vinyl-vinyl cyanide copolymer is 30 wt% or more, 31 wt% or more, 32 wt% or more, 33 wt% or more, 34 % by weight or more, or 35% by weight or more, and 50% by weight or less, 49% by weight or less, 48% by weight or less, 47% by weight or less, 46% by weight or less, or 45% by weight or less.

At this time, when the (B) aromatic vinyl-vinyl cyanide copolymer is less than 30% by weight, there is a fear that the fluidity of the thermoplastic resin composition may decrease, and if it exceeds 50% by weight, the heat resistance of the thermoplastic resin composition may decrease. .

(C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer

In one embodiment, the (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer imparts excellent heat resistance to the thermoplastic resin composition.

On the other hand, when the weight average molecular weight of the (B) aromatic vinyl-vinyl cyanide copolymer increases, it is advantageous in terms of chemical resistance, but as the weight average molecular weight increases, the fluidity of the thermoplastic resin composition decreases, so there is a limit to realizing high fluidity. have. Accordingly, when the (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer is introduced, the thermoplastic resin composition may have high fluidity while maintaining excellent chemical resistance.

The (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer may include 30 to 50 wt% of an N-phenyl maleimide-derived component based on 100 wt%.

The (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer contains 35 to 45% by weight of a component derived from N-phenyl maleimide and 1 to 5% by weight of a component derived from maleic anhydride based on 100% by weight of the N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer %, 45 to 55% by weight of a component derived from styrene, and 5 to 15% by weight of a component derived from acrylonitrile.

When the (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer contains less than 30% by weight of the N-phenyl maleimide-derived component based on 100% by weight, the heat resistance improvement effect is difficult to be expressed, If it exceeds 50% by weight, there is a fear that the appearance characteristics of the thermoplastic resin composition and the molded article using the same may be greatly reduced.

The (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer may have a weight average molecular weight of 100,000 to 150,000 g/mol.

The (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer has a glass transition temperature (Tg) of 150°C or more, 155°C or more, 160°C or more, or 165°C or more, and 180°C or less , 178° C. or less, or 175° C. or less.

On the other hand, based on 100 wt% of components (A) to (C), the (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer is 15 wt% or more, 16 wt% or more, 17 % by weight or more, 18% by weight or more, or 19% by weight or more, and 25% by weight or less, 24% by weight or less, or 23% by weight or less.

At this time, (C) when the content of the N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer satisfies the above range, the heat resistance is greatly improved while maintaining the balance of physical properties such as fluidity and chemical resistance of the thermoplastic resin composition can do.

(D) other additives

The thermoplastic resin composition according to one embodiment, in addition to the components (A) to (C), in order to balance the respective physical properties under conditions of maintaining excellent fluidity, heat resistance, and chemical resistance, or the final composition of the thermoplastic resin composition It may further include one or more additives required depending on the use.

Specifically, as the additive, a nucleating agent, a coupling agent, a filler, a plasticizer, a lubricant, a mold release agent, an antibacterial agent, a heat stabilizer, an antioxidant, an ultraviolet stabilizer, a flame retardant, an antistatic agent, a colorant. can be used as

These additives may be appropriately included within a range that does not impair the physical properties of the thermoplastic resin composition, and specifically, may be included in an amount of 20 parts by weight or less based on 100 parts by weight of components (A) to (C), but is limited thereto no.

The thermoplastic resin composition according to the present invention may be prepared by a known method for preparing a thermoplastic resin composition.

For example, the thermoplastic resin composition according to the present invention may be prepared in the form of pellets by mixing the components of the present invention and other additives at the same time and then melt-kneading in an extruder.

The molded article according to an embodiment of the present invention may be prepared from the above-described thermoplastic resin composition.

In one embodiment, the molded article has a melt flow index of 10 g/10min or more, 10.5 g/10min or more, 11 g/10min or more, 11.5 g/10min or more, measured at 220°C and 10 kg load condition according to ASTM D1238, or 12 g/10 min or more, and 15 g/10 min or less, 14.5 g/10 min or less, 14 g/10 min or less, 13.5 g/10 min or less, or 13 g/10 min or less.

In one embodiment, the heat deflection temperature (HDT) measured at 0.45 MPa condition according to ASTM D648 may be 107 ° C. or higher, for example 108 ° C. or higher, for example 109 ° C. or higher, for example 110 ° C. or higher.

Since the thermoplastic resin composition satisfies high flow and high heat resistance characteristics and exhibits excellent chemical resistance at the same time, it can be widely applied to the molding of various products used for painting and unpainting, for example, automotive exterior materials, in particular, automotive lamps. It can be usefully applied to applications requiring high fluidity as well as heat resistance and chemical resistance, such as a housing for a vehicle, more specifically, a vehicle head lamp housing and/or a rear lamp housing.

Hereinafter, the present invention will be described in more detail through Examples and Comparative Examples, but the following Examples and Comparative Examples are for illustrative purposes and are not intended to limit the present invention.

Examples 1 to 3 and Comparative Examples 1 to 4

The thermoplastic resin compositions of Examples 1 to 3 and Comparative Examples 1 to 4 were prepared according to the component content ratios shown in Table 1 below.

A small amount of heat stabilizer and lubricant were added to the components shown in Table 1 in equal amounts, dry-mixed, and quantitatively continuously added to the supply part of a twin-screw extruder (L/D = 36, Φ = 45 mm) to melt/knead. Subsequently, the thermoplastic resin composition pelletized through a twin-screw extruder was dried at about 80° C. for about 4 hours, and then a specimen for evaluation of physical properties was prepared using a 6 oz injection molding machine having a cylinder temperature of about 240° C. and a mold temperature of about 60° C.

division	Example 1	Example 2	Example 3	Comparative Example 1	Comparative Example 2	Comparative Example 3	Comparative Example 4
(A)	47	27	30	47	27	27	27
(B)	30	50	50	30	50	20	20
(B')	-		-	-	-	30	-
(B")	-	-	-	-	-	-	30
(C)	23	23	20	-	-	23	23
(C')	-	-	-	23	23	-	-

A description of each configuration shown in Table 1 is as follows.

(A) Butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer

Acrylonitrile comprising about 58% by weight of a core comprising a butadiene rubbery polymer having an average particle diameter of about 260 nm, and a shell in which styrene and acrylonitrile are graft polymerized in a weight ratio of about 7.5:2.5 to the core- Butadiene-styrene graft copolymer (Lotte Chemical)

(B) Aromatic vinyl-vinyl cyanide copolymer

A styrene-acrylonitrile copolymer having a weight average molecular weight of about 90,000 g/mol as a copolymer of a monomer mixture containing about 75 wt% of styrene and about 25 wt% of acrylonitrile (Lotte Chemical)

(B') aromatic vinyl-vinyl cyanide copolymer

A styrene-acrylonitrile copolymer having a weight average molecular weight of about 90,000 g/mol as a copolymer of a monomer mixture containing about 68 wt% of styrene and about 34 wt% of acrylonitrile (Lotte Chemical)

(B") aromatic vinyl-vinyl cyanide copolymer

A styrene-acrylonitrile copolymer having a weight average molecular weight of about 230,000 g/mol as a copolymer of a monomer mixture containing about 73 wt% of styrene and about 27 wt% of acrylonitrile (Lotte Chemical)

(C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer

about 38% by weight of a component derived from N-phenyl maleimide, about 2% by weight of a component derived from maleic anhydride, about 50% by weight of a component derived from styrene, and about 10% by weight of a component derived from acrylonitrile, wherein the glass transition temperature (Tg) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer having a

(C') N-phenyl maleimide-maleic anhydride-styrene copolymer

N-phenyl maleimide-maleic anhydride-styrene copolymer comprising about 21 wt% of an N-phenyl maleimide-derived component, about 7 wt% of a maleic anhydride-derived component, and about 72 wt% of a styrene-derived component (Polyscope)

Evaluation (Experimental Example)

The experimental results are shown in Table 2 below.

(1) Flowability (unit: g/10min): Melt-flow index (MI) was measured at 220° C. and 10 kg load condition according to ASTM D1238.

(2) Heat resistance (unit: °C): According to ASTM D648, heat deflection temperature (HDT) was measured under 0.45 MPa condition.

(3) Chemical resistance: After fixing both ends of the tensile strength test specimen (length 167 mm, thickness 3.2 mm) according to ASTM D638 to a jig, the distance between the jigs is narrowed so that the length between the jigs is 155 mm. A mixture of xylene: ethanol = 1:1 was applied to the center of the specimen.

Thereafter, the time until cracks occurred in the center of the specimen was measured and denoted by ○, △, and X according to the following evaluation criteria.

- ○: more than 110 seconds (or no cracks)

- △: 60 seconds or more and less than 110 seconds

- X: less than 60 seconds

division	Example 1	Example 2	Example 3	Comparative Example 1	Comparative Example 2	Comparative Example 3	Comparative Example 4
MI	10.5	11.5	13.5	7.5	12.5	8.5	6.5
HDT	110	110	108	106	106	108	108
chemical resistance	○	○	○	△	X	○	○

From Tables 1 to 2, as in Examples 1 to 3, a butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer, an aromatic vinyl-vinyl cyanide copolymer, and N-phenyl maleimide-maleic anhydride-styrene-acryl It can be confirmed that, by using the ronitrile copolymer in an optimal content, it is possible to provide a thermoplastic resin composition exhibiting excellent fluidity, heat resistance, and chemical resistance compared to Comparative Examples and a molded article using the same.

In the above, the present invention has been described through preferred embodiments as described above, but the present invention is not limited thereto and various modifications and variations are possible without departing from the concept and scope of the claims described below. Those of ordinary skill in the art to which the invention pertains will readily understand.

Claims (15)

1. (A) 25 to 50 wt% of a butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer;

   (B) 30 to 50% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer; and

   (C) A thermoplastic resin composition comprising 15 to 25% by weight of an N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer.
2. In claim 1,

   The (A) butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer is,

   A core comprising a butadiene-based rubbery polymer having an average particle diameter of 250 to 350 nm, and

   A thermoplastic resin composition having a core-shell structure comprising a shell formed by graft polymerization of an aromatic vinyl compound and a vinyl cyanide compound to the core.
3. In claim 1 or 2,

   The (A) butadiene-based rubber-modified aromatic vinyl-vinyl cyanide graft copolymer is an acrylonitrile-butadiene-styrene graft copolymer, a thermoplastic resin composition.
4. According to any one of claims 1 to 3,

   The (B) aromatic vinyl compound-vinyl cyanide compound copolymer has a weight average molecular weight of 90,000 to 100,000 g/mol, and a thermoplastic resin composition which is a copolymer comprising 20 to 28 wt% of a component derived from a vinyl cyanide compound.
5. 5. In any one of claims 1 to 4,

   In the (B) aromatic vinyl compound-vinyl cyanide compound copolymer, the aromatic vinyl compound is styrene, α-methylstyrene, β-methylstyrene, pt-butylstyrene, ethylstyrene, vinylxylene, monochlorostyrene, dichlorostyrene, A thermoplastic resin composition selected from the group consisting of dibromostyrene, vinylnaphthalene, and combinations thereof.
6. 6. In any one of claims 1 to 5,

   In the (B) aromatic vinyl compound-vinyl cyanide compound copolymer, the vinyl cyanide compound is selected from the group consisting of acrylonitrile, methacrylonitrile, fumaronitrile, and combinations thereof. The thermoplastic resin composition.
7. 7. In any one of claims 1 to 6,

   The (B) aromatic vinyl-vinyl cyanide copolymer is a styrene-acrylonitrile copolymer thermoplastic resin composition.
8. 8. In any one of claims 1 to 7,

   The (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer is a thermoplastic resin composition comprising 30 to 50% by weight of a component derived from N-phenyl maleimide.
9. In claim 8,

   The (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer comprises 35 to 45 wt% of N-phenyl maleimide-derived component, 1 to 5 wt% of maleic anhydride-derived component, and 45 wt% of styrene-derived component to 55% by weight, and 5 to 15% by weight of an acrylonitrile-derived component.
10. 10. In any one of claims 1 to 9,

    The (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer has a weight average molecular weight of 100,000 to 150,000 g/mol of a thermoplastic resin composition.
11. 11. In any one of claims 1 to 10,

    The (C) N-phenyl maleimide-maleic anhydride-styrene-acrylonitrile copolymer has a glass transition temperature (Tg) of 150 to 180 ℃ thermoplastic resin composition.
12. 12. In any one of claims 1 to 11,

    The thermoplastic resin composition further comprises at least one additive selected from a nucleating agent, a coupling agent, a filler, a plasticizer, a lubricant, a mold release agent, an antibacterial agent, a heat stabilizer, an antioxidant, a UV stabilizer, a flame retardant, an antistatic agent, and a colorant.
13. A molded article comprising the thermoplastic resin composition according to any one of claims 1 to 12.
14. In claim 13,

    The molded article is a molded article having a melt flow index of 10 to 15 g/10min measured at 220°C and a load of 10 kg according to ASTM D1238.
15. 15. In claim 13 or 14,

    The molded article is a molded article having a heat deflection temperature (HDT) of 107° C. or higher measured at 0.45 MPa according to ASTM D648.