KR20240002831A - Thermoplastic resin composition and molded product manufactured from the same - Google Patents

Abstract

(A1) Acrylic graft copolymer; (A2) aromatic vinyl-vinyl cyanide copolymer; (B) polycarbonate resin; (C) PA6-b-PEO copolymer; and (D) a modified maleic anhydride copolymer, and a molded article manufactured therefrom.

Description

Thermoplastic resin composition and molded article manufactured therefrom {THERMOPLASTIC RESIN COMPOSITION AND MOLDED PRODUCT MANUFACTURED FROM THE SAME}

The present invention relates to thermoplastic resin compositions and molded articles manufactured therefrom.

Acrylonitrile-Styrene-Acrylate (ASA) resin has excellent weather resistance and is widely used in outdoor building materials and automobile exterior materials. However, ASA resin has poor impact resistance, so in order to apply it to applications requiring high impact strength, the acrylic rubber polymer content of ASA resin must be increased. However, if the acrylic rubber polymer content is increased, heat resistance, etc. decreases, so it is used as an automobile exterior material. There are limits to its application in applications requiring high heat resistance properties, such as:

As an alternative to this, a method of supplementing heat resistance and impact resistance by mixing ASA resin and polycarbonate (PC) resin, which has excellent heat resistance, has been proposed. This PC/ASA resin can be applied to various automobile interior/exterior materials. there is.

Recently, in accordance with the trend of requiring antistatic properties in automobile parts, attempts are being made to include antistatic agents in PC/ASA resin. However, there is a problem that the antistatic agent decomposes the PC resin and the impact resistance of the PC/ASA resin decreases.

Therefore, there is a need to develop a PC/ASA resin composition that has antistatic properties and excellent impact resistance.

One embodiment provides a thermoplastic resin composition with excellent impact resistance, heat resistance, and antistatic properties, and a molded article manufactured therefrom.

According to one embodiment, (A1) an acrylic graft copolymer; (A2) aromatic vinyl-vinyl cyanide copolymer; (B) polycarbonate resin; (C) PA6-b-PEO copolymer; and (D) a modified maleic anhydride copolymer.

The (A1) acrylic graft copolymer may include a core containing an acrylic rubbery polymer, and a shell formed by grafting a monomer mixture containing an aromatic vinyl compound and a vinyl cyanide compound onto the core.

The (A1) acrylic graft copolymer may include 20 to 60% by weight of the acrylic rubbery polymer based on 100% by weight.

The (A1) acrylic graft copolymer may be an acrylonitrile-styrene-acrylate graft copolymer.

The weight average molecular weight of the (A2) aromatic vinyl-cyanide vinyl copolymer may be 80,000 to 200,000 g/mol.

The (A2) aromatic vinyl-vinyl cyanide copolymer may be a styrene-acrylonitrile copolymer.

The weight average molecular weight of the polycarbonate resin (B) may be 10,000 to 100,000 g/mol.

The (D) modified maleic anhydride copolymer may include 60 to 90% by weight of a component derived from an aromatic vinyl compound and 10 to 30% by weight of a component derived from maleic anhydride.

The (D) modified maleic anhydride copolymer may be a styrene-maleic anhydride copolymer.

The thermoplastic resin composition includes (A1) 5 to 23% by weight of an acrylic graft copolymer; (A2) 5 to 27% by weight of aromatic vinyl-vinyl cyanide copolymer; and (B) 15 to 25 parts by weight of (C) PA6-b-PEO copolymer, based on 100 parts by weight of the base resin containing 50 to 90 wt% of polycarbonate resin; and (D) 2 to 12 parts by weight of a modified maleic anhydride copolymer.

The thermoplastic resin composition contains at least one additive selected from flame retardants, nucleating agents, coupling agents, fillers, plasticizers, impact modifiers, lubricants, antibacterial agents, mold release agents, heat stabilizers, antioxidants, inorganic additives, ultraviolet stabilizers, antistatic agents, pigments, and dyes. may further include.

Meanwhile, according to another embodiment, a molded article containing the above-described thermoplastic resin composition is provided.

The molded product may have an Izod impact strength of 50 kgf·cm/cm or more as measured according to ASTM D256 on a notched 1/4” thick specimen.

The molded product may have a surface resistance of 1 x 10 ¹² Ω/□ or less as measured on a 100 mm x 100 mm x 3.2 mm specimen according to ASTM D257.

A thermoplastic resin composition with excellent impact resistance, heat resistance, and antistatic properties, and a molded article manufactured therefrom can be provided.

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 thereby, and the present invention is only defined by the scope of the claims to be described later.

Unless otherwise specified herein, “copolymer” means block copolymerization, random copolymerization, and graft copolymerization, and “copolymer” means block copolymer, random copolymer, and graft copolymer.

Unless specifically mentioned herein, the average particle diameter of the rubbery polymer refers to the volume average diameter and the Z-average particle diameter measured using dynamic light scattering analysis equipment.

Unless specifically mentioned herein, the weight average molecular weight is measured using Agilent Technologies' 1200 series Gel Permeation Chromatography (GPC) after dissolving the powder sample in a suitable solvent (the column is Shodex LF-804). , the standard sample is Shodex polystyrene).

One embodiment provides a thermoplastic resin composition that is excellent in impact resistance, heat resistance, and antistatic properties.

The thermoplastic resin composition includes (A1) an acrylic graft copolymer; (A2) aromatic vinyl-vinyl cyanide copolymer; (B) polycarbonate resin; (C) PA6-b-PEO copolymer; and (D) a thermoplastic resin composition comprising a modified maleic anhydride copolymer.

Hereinafter, each component included in the thermoplastic resin composition will be described in detail.

(A1) Acrylic graft copolymer

In one embodiment, the acrylic graft copolymer (A1) functions to enhance the weather resistance and impact resistance of the thermoplastic resin composition.

In one embodiment, the acrylic graft copolymer (A1) may include a core containing an acrylic rubbery polymer, and a shell formed by grafting a monomer mixture containing an aromatic vinyl compound and a vinyl cyanide compound to the core. .

The (A1) acrylic graft copolymer can be prepared according to any method known to those skilled in the art.

As the above production method, conventional polymerization methods such as emulsion polymerization, suspension polymerization, solution polymerization, and bulk polymerization can be used. For a non-limiting example, an acrylic rubbery polymer is prepared, and a monomer mixture containing an aromatic vinyl compound and a vinyl cyanide compound is graft polymerized to a core formed of one or more layers of the acrylic rubbery polymer to form one or more shell layers. It can be manufactured by the following method.

The acrylic rubber polymer can be manufactured using an acrylic monomer as the main monomer. The acrylic monomer may be one or more selected from the group consisting of ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, and hexyl acrylate, but is not limited thereto.

The acrylic monomer may be copolymerized with one or more other monomers capable of radical polymerization. When copolymerized, the amount of the one or more radically polymerizable other monomers may be 5 to 30% by weight, for example, 10 to 20% by weight, based on the total weight of the acrylic rubbery polymer.

The aromatic vinyl compound included in the shell layer may be one or more selected from styrene, α-methylstyrene, p-methylstyrene, p-t-butylstyrene, 2,4-dimethylstyrene, chlorostyrene, vinyltoluene, and vinylnaphthalene. However, it is not limited to this.

The vinyl cyanide compound included in the shell layer may be one or more selected from acrylonitrile, methacrylonitrile, and fumaronitrile, but is not limited thereto.

Based on 100% by weight of the (A1) acrylic graft copolymer, the acrylic rubbery polymer may be included in an amount of 30 to 70% by weight, for example, 40 to 60% by weight.

In the shell layer formed by graft polymerizing the acrylic rubbery polymer with a monomer mixture containing the aromatic vinyl compound and the vinyl cyanide compound, the aromatic vinyl compound is present in an amount of 50 to 80% by weight based on 100% by weight of the shell layer, e.g. For example, it may be included at 60 to 70% by weight, and the vinyl cyanide compound may be included at 20 to 50% by weight, for example, 30 to 40% by weight, based on 100% by weight of the shell layer.

In one embodiment, the (A1) acrylic graft copolymer may be an acrylonitrile-styrene-acrylate graft copolymer.

As a non-limiting example, the acrylonitrile-styrene-acrylate graft copolymer is a two-layer or more butyl acrylate rubbery polymer comprising an inner core made of butyl acrylate and styrene copolymerized and an outer core made of butyl acrylate polymer. It may be a core-shell type acrylonitrile-styrene-acrylate graft copolymer prepared by graft polymerizing a mixture of acrylonitrile and styrene to the core through emulsion polymerization.

In one embodiment, the (A1) acrylic graft copolymer has an average particle diameter of 100 nm or more, for example, 150 nm or more, for example, 500 nm or less, for example, 400 nm or less, For example, it may be 100 to 500 nm, for example 150 to 400 nm.

Within the above average particle size range, a thermoplastic resin composition containing it may have excellent impact resistance, rigidity, and fluidity.

The (A1) acrylic graft copolymer may be included in an amount of 5 to 23% by weight based on 100% by weight of the base resin containing (A1), (A2), and (B), and in the above weight range, the thermoplastic resin composition It can have excellent weather resistance and impact resistance.

(A2) Aromatic vinyl-vinyl cyanide copolymer

In one embodiment, the aromatic vinyl-cyanide vinyl copolymer (A2) may perform the function of maintaining compatibility between components of a thermoplastic resin composition at a certain level.

In one embodiment, the aromatic vinyl-vinyl cyanide copolymer (A2) may be a copolymer of an aromatic vinyl compound and a vinyl cyanide compound.

The weight average molecular weight of the aromatic vinyl-cyanide vinyl copolymer (A2) is 80,000 g/mol or more, for example 85,000 g/mol or more, for example 90,000 g/mol or more, for example 200,000 g/mol or less, For example, it may be 150,000 g/mol or less, for example 80,000 to 200,000 g/mol, for example 80,000 to 150,000 g/mol.

The aromatic vinyl compound may be one or more selected from styrene, α-methylstyrene, p-methylstyrene, p-t-butylstyrene, 2,4-dimethylstyrene, chlorostyrene, vinyltoluene, and vinylnaphthalene.

The vinyl cyanide compound may be one or more types selected from acrylonitrile, methacrylonitrile, and fumaronitrile.

In one embodiment, the (A2) aromatic vinyl-vinyl cyanide copolymer may be styrene-acrylonitrile copolymer (SAN).

In one embodiment, based on 100% by weight of the (A2) aromatic vinyl-vinyl cyanide copolymer, the vinyl cyanide compound may be included in an amount of 10% by weight or more, for example, 15% by weight or more, for example, 20% by weight or more. may be included, for example, at 40% by weight or less, for example at 35% by weight or less, for example at 10 to 40% by weight, for example at 15 to 40% by weight, for example at 20 to 35% by weight. may be included.

Based on 100% by weight of the (A2) aromatic vinyl-vinyl cyanide copolymer, the remaining monomers excluding the vinyl cyanide compound may be composed of aromatic vinyl compounds.

In one embodiment, the aromatic vinyl-cyanide vinyl copolymer (A2) may be included in an amount of 5 to 27% by weight based on 100% by weight of the base resin. In this weight% range, the thermoplastic resin composition may have excellent rigidity and heat resistance. there is.

(B) Polycarbonate resin

(B) Polycarbonate resin can improve the heat resistance and impact resistance of a thermoplastic resin composition.

The polycarbonate resin (B) is a polyester having a carbonate bond, and its type is not particularly limited, and any polycarbonate resin available in the resin composition field can be used.

For example, it can be prepared by reacting diphenols represented by the following formula (1) with a compound selected from the group consisting of phosgene, halogen acid ester, carbonate ester, and combinations thereof.

[Formula 1]

In Formula 1,

A is a single bond, a substituted or unsubstituted C1 to C30 alkylene group, a substituted or unsubstituted C2 to C5 alkenylene group, a substituted or unsubstituted C2 to C5 alkylidene group, or a substituted or unsubstituted C1 to C30 haloalkyl. A lene group, a substituted or unsubstituted C5 to C6 cycloalkylene group, a substituted or unsubstituted C5 to C6 cycloalkenylene group, a substituted or unsubstituted C5 to C10 cycloalkylidene group, a substituted or unsubstituted C6 to C30 arylene group. , substituted or unsubstituted C1 to C20 alkoxylene group, halogen acid ester group, carbonate ester group, C=O, S and SO ₂ , and R ¹ and R ² are each independently substituted or It is an unsubstituted C1 to C30 alkyl group or a substituted or unsubstituted C6 to C30 aryl group, and n1 and n2 are each independently integers of 0 to 4.

Two or more types of diphenols represented by Formula 1 may be combined to form a repeating unit of polycarbonate resin.

Specific examples of the diphenols include hydroquinone, resorcinol, 4,4'-dihydroxydiphenyl, 2,2-bis(4-hydroxyphenyl)propane (also known as 'bisphenol-A'), 2, 4-bis(4-hydroxyphenyl)-2-methylbutane, bis(4-hydroxyphenyl)methane, 1,1-bis(4-hydroxyphenyl)cyclohexane, 2,2-bis(3-chloro) -4-hydroxyphenyl)propane, 2,2-bis(3-methyl-4-hydroxyphenyl)propane, 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, 2,2 -bis(3,5-dichloro-4-hydroxyphenyl)propane, 2,2-bis(3,5-dibromo-4-hydroxyphenyl)propane, bis(4-hydroxyphenyl)sulfoxide, Bis(4-hydroxyphenyl)ketone, bis(4-hydroxyphenyl)ether, etc. can be mentioned. Among the above diphenols, 2,2-bis(4-hydroxyphenyl)propane, 2,2-bis(3-methyl-4-hydroxyphenyl)propane, and 2,2-bis(3,5- Dimethyl-4-hydroxyphenyl)propane, 2,2-bis(3,5-dichloro-4-hydroxyphenyl)propane, or 1,1-bis(4-hydroxyphenyl)cyclohexane can be used. More preferably, 2,2-bis(4-hydroxyphenyl)propane can be used.

The (B) polycarbonate resin may be a mixture of copolymers prepared from two or more types of diphenols. Additionally, the polycarbonate resin may be linear polycarbonate resin, branched polycarbonate resin, polyester carbonate copolymer resin, etc.

Specific examples of linear polycarbonate resins include bisphenol-A polycarbonate resins. A specific example of the branched polycarbonate resin may be a resin prepared by reacting a polyfunctional aromatic compound such as trimellitic anhydride, trimellitic acid, etc. with diphenols and carbonate. The polyester carbonate copolymer resin can be prepared by reacting a difunctional carboxylic acid with diphenols and carbonate, and the carbonate used here may be a diaryl carbonate such as diphenyl carbonate or ethylene carbonate.

The polycarbonate resin (B) preferably has a weight average molecular weight of 10,000 to 100,000 g/mol, for example, it is effective to use 14,000 to 50,000 g/mol. When the weight average molecular weight of the polycarbonate resin (B) is within the above range, excellent impact resistance and fluidity can be obtained.

The polycarbonate resin (B) may be included in an amount of 50 to 90% by weight, for example, 60 to 90% by weight, for example, 70 to 90% by weight, based on 100% by weight of the base resin. Within the above weight range, the thermoplastic resin composition can exhibit excellent heat resistance and impact resistance.

The polycarbonate resin (B) has a melt flow index (MI) of 10 to 70 g/10min, for example, 15 to 65 g/10min, measured at 300°C and 1.2 kg load according to ASTM D1238. You can. When a polycarbonate resin having a melt flow index in the above range is used, a molded product manufactured therefrom can exhibit excellent moldability and excellent impact resistance.

Meanwhile, the polycarbonate resin (B) can be used by mixing two or more polycarbonate resins with different weight average molecular weights or melt flow indices. By using a mixture of polycarbonate resins of different weight average molecular weights or melt flow indices, it is easy to adjust the thermoplastic resin composition to have the desired fluidity.

(C) PA6-b-PEO copolymer

In one embodiment, the (C) PA6-b-PEO copolymer can impart antistatic properties to a thermoplastic resin composition.

As an antistatic agent, the antistatic property of the thermoplastic resin composition may be particularly excellent by using a block copolymer of polyamide 6 and polyethylene oxide among polyether block copolymers.

The volume resistance of the (C) PA6-b-PEO copolymer may be 2 × 10 ⁵ Ω·m or less, and within the volume resistance range, a thermoplastic resin composition containing it may exhibit excellent antistatic properties.

The (C) PA6-b-PEO copolymer may be included in an amount of 15 to 25 parts by weight, for example, 15 to 20 parts by weight, for example, 20 to 25 parts by weight, based on 100 parts by weight of the base resin, and in the above weight range The thermoplastic resin composition may have excellent antistatic properties.

(D) Modified maleic anhydride copolymer

(D) The modified maleic anhydride copolymer prevents the (B) polycarbonate resin included in the thermoplastic resin composition from being decomposed by the terminal amino group of the (C) PA6-b-PEO copolymer included as an antistatic agent. , it is possible to impart excellent mechanical properties to the thermoplastic resin composition by preventing the mechanical properties, such as impact resistance, from being deteriorated.

The (D) modified maleic anhydride copolymer can be prepared by polymerizing a mixture of an aromatic vinyl compound and maleic anhydride using a conventional polymerization method.

The aromatic vinyl compound may be one or more selected from styrene, α-methylstyrene, p-methylstyrene, p-t-butylstyrene, 2,4-dimethylstyrene, chlorostyrene, vinyltoluene, or vinylnaphthalene.

In one embodiment, the (D) modified maleic anhydride copolymer may include 60 to 90% by weight of a component derived from an aromatic vinyl compound and 10 to 30% by weight of a component derived from maleic anhydride, for example For example, it may include 65 to 80% by weight of components derived from aromatic vinyl compounds, and 20 to 35% by weight of components derived from maleic anhydride.

Within the above weight range, the thermoplastic resin composition containing the (D) modified maleic anhydride copolymer and the molded article manufactured therefrom may exhibit excellent impact resistance and mechanical properties.

The weight average molecular weight of the (D) modified maleic anhydride copolymer may be 10,000 to 300,000 g/mol, for example, 15,000 to 150,000 g/mol, and when the weight average molecular weight is within the above range, a thermoplastic resin composition comprising the same. And molded products manufactured therefrom can maintain excellent physical property balance.

In one embodiment, the (D) modified maleic anhydride copolymer may be a styrene-maleic anhydride copolymer.

In one embodiment, the (D) modified maleic anhydride copolymer is 2 to 12 parts by weight, for example 2 to 10 parts by weight, for example 3 to 10 parts by weight, for example, based on 100 parts by weight of the base resin. It may be included in 5 to 10 parts by weight, and within this weight range, the mechanical properties of the thermoplastic resin composition may be excellent.

(E) Other additives

In addition to the components (A1), (A2), (B), (C), and (D), the thermoplastic resin composition according to one embodiment is provided under conditions that can maintain excellent moldability and other physical properties during processing or use. In order to balance each physical property, or depending on the final use of the thermoplastic resin composition, one or more additives may be further included.

Specifically, the additives include flame retardants, nucleating agents, coupling agents, fillers, plasticizers, lubricants, antibacterial agents, mold release agents, heat stabilizers, antioxidants, inorganic additives, ultraviolet stabilizers, antistatic agents, pigments, dyes, etc., and these may be used alone. Or, it can be used in combination of two or more types.

These additives may be appropriately included within a range that does not impair the physical properties of the thermoplastic resin composition. Specifically, they may be included in an amount of 20 parts by weight or less based on 100 parts by weight of the base resin, but are not limited thereto.

Meanwhile, the thermoplastic resin composition according to one embodiment can also be used by mixing with other resins or other rubber components.

Meanwhile, another embodiment provides a molded article including the thermoplastic resin composition according to one embodiment. The molded article can be manufactured using the thermoplastic resin composition by various methods known in the art, such as injection molding and extrusion molding.

Hereinafter, preferred embodiments of the present invention will be described. However, the following example is only a preferred example of the present invention, and the present invention is not limited by the following example.

Example

The ingredients listed in Table 1 below were mixed in a typical mixer, and using a twin-screw extruder with L (length)/D (diameter) = 44 and Φ (inner diameter) = 35 mm, the barrel temperature was about 260. By extrusion at ℃, a thermoplastic resin composition in the form of a pellet was prepared.

The manufactured pellets were dried for about 4 hours in a dehumidifying dryer at about 80°C before injection molding, and then set to a cylinder temperature of about 240°C and a mold temperature of about 60°C using a 6 oz injection molding machine to measure physical properties. Specimens were prepared. The physical properties measured using the specimens are shown in Table 2 below.

In Table 1, components (A1), (A2), and (B) are included in the base resin and are expressed in weight percent based on the total weight of the base resin, and (C) and (D) are the base resin. It is expressed as parts by weight based on 100 parts by weight of resin.

unit Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 (A1) weight% 12 12 12 12 12 (A2) weight% 8 8 8 8 8 (B) weight% 80 80 80 80 80 (C) weight part 20 20 20 20 20 (D) weight part 3 5 10 - 15

(A1) Acrylic graft copolymer

A core-shell structure comprising about 50% by weight of a core with an average particle size of about 320 nm containing a butyl acrylate rubbery polymer, and styrene and acrylonitrile grafted to the core at a weight ratio of about 7:3 to form a shell. An acrylonitrile-styrene-acrylate graft copolymer (manufacturer: Lotte Chemical) was used.

(A2) Aromatic vinyl-vinyl cyanide copolymer

having a weight average molecular weight of about 110,000 g/mol copolymerized from a monomer mixture comprising about 28% by weight acrylonitrile and about 72% by weight styrene. Styrene-acrylonitrile copolymer (manufacturer: Lotte Chemical) was used.

(B) Polycarbonate resin

Bisphenol-A type polycarbonate resin (manufacturer: Lotte Chemical) with a weight average molecular weight of about 27,000 g/mol was used.

(C) PA6-b-PEO copolymer

PA6-b-PEO copolymer (manufacturer: IonPhase) with a volume resistivity of approximately 1 × 10 ⁵ Ω·m was used.

(D) Modified maleic anhydride copolymer

A styrene-maleic anhydride copolymer (manufacturer: Polyscope) having a weight average molecular weight of about 80,000 g/mol copolymerized from a monomer mixture containing about 74% by weight of styrene and about 26% by weight of maleic anhydride was used.

evaluation

For each specimen according to Examples 1 to 3 and Comparative Examples 1 and 2, the impact resistance, rigidity, heat resistance, and antistatic properties were measured using the following evaluation methods, and the polycarbonate resin was extracted from each pellet and then The weight average molecular weight was measured and listed in Table 2 below.

1. Impact resistance (unit: kgf·cm/cm)

Izod impact strength was measured according to ASTM D256 on notched 1/4” thick specimens.

2. Heat resistance (unit: ℃)

Vicat softening temperature (VST) was measured according to ISO R306.

3. Stiffness (unit: kgf/cm ² )

Tensile strength was measured on 1/8” thick specimens according to ASTM D638.

4. Anti-static properties (unit: Ω/□)

The surface resistance was measured for a specimen measuring 100 mm × 100 mm × 3.2 mm according to ASTM D257 using a surface resistance measuring device (manufacturer: Hiresta, model name: HCP-HT450). The lower the surface resistance, the better the antistatic properties.

5. Weight average molecular weight of polycarbonate resin (unit: g/mol)

To evaluate the degree of decomposition of the polycarbonate resin after extrusion processing, each pellet was dissolved in methylene chloride and then placed in methanol to extract the polycarbonate resin and dried in an oven at 80°C for about 4 hours. The weight average molecular weight of the polycarbonate resin was measured for the dried sample using GPC.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 impact strength 51 60 75 20 80 tensile strength 490 499 550 470 560 VST 112 111 111 110 109 surface resistance 1 x 10 ¹¹ 1 x 10 ¹¹ 1 x 10 ¹¹ 1 x 10 ¹¹ 1 x 10 ¹³ polycarbonate resin
Weight average molecular weight 27,000 27,000 27,000 24,000 27,000

From the results of Tables 1 to 2, Examples 1 to 3 are excellent in impact resistance, rigidity, heat resistance, etc., and also have excellent antistatic properties, but Comparative Example 1, which does not include (D) modified maleic anhydride copolymer, is ( C) The polycarbonate resin decomposes during extrusion processing due to the PA6-b-PEO copolymer, lowering the weight average molecular weight of the polycarbonate resin, thereby lowering the impact resistance and rigidity, and (D) modified maleic anhydride copolymer It can be seen that in Comparative Example 2, in which an excessive amount of is included, the antistatic properties are lowered and the heat resistance is lowered.

Although the present invention has been described above through preferred embodiments as described above, 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 working in the technical field to which the invention belongs will easily understand.

Claims (14)

(A1) Acrylic graft copolymer;
(A2) aromatic vinyl-vinyl cyanide copolymer;
(B) polycarbonate resin;
(C) PA6-b-PEO copolymer; and
(D) A thermoplastic resin composition containing a modified maleic anhydride copolymer. In paragraph 1:
The (A1) acrylic graft copolymer includes a core containing an acrylic rubbery polymer, and a shell formed by grafting a monomer mixture containing an aromatic vinyl compound and a vinyl cyanide compound to the core. A thermoplastic resin composition. In paragraph 2,
The (A1) acrylic graft copolymer is a thermoplastic resin composition comprising 20 to 60% by weight of the acrylic rubbery polymer based on 100% by weight. In paragraph 1:
The thermoplastic resin composition wherein the (A1) acrylic graft copolymer is an acrylonitrile-styrene-acrylate graft copolymer. In paragraph 1:
The (A2) aromatic vinyl-vinyl cyanide copolymer has a weight average molecular weight of 80,000 to 200,000 g/mol, a thermoplastic resin composition. In paragraph 1:
The thermoplastic resin composition (A2) wherein the aromatic vinyl-cyanide vinyl copolymer is a styrene-acrylonitrile copolymer. In paragraph 1:
The (B) polycarbonate resin has a weight average molecular weight of 10,000 to 100,000 g/mol, a thermoplastic resin composition. In paragraph 1:
The (D) modified maleic anhydride copolymer is a thermoplastic resin composition comprising 60 to 90% by weight of a component derived from an aromatic vinyl compound and 10 to 30% by weight of a component derived from maleic anhydride. In paragraph 1:
The thermoplastic resin composition (D) wherein the modified maleic anhydride copolymer is a styrene-maleic anhydride copolymer. In paragraph 1:
The thermoplastic resin composition includes (A1) 5 to 23% by weight of an acrylic graft copolymer; (A2) 5 to 27% by weight of aromatic vinyl-vinyl cyanide copolymer; and (B) 15 to 25 parts by weight of (C) PA6-b-PEO copolymer, based on 100 parts by weight of the base resin containing 50 to 90 wt% of polycarbonate resin; and (D) 2 to 12 parts by weight of a modified maleic anhydride copolymer. In paragraph 1:
The thermoplastic resin composition contains at least one additive selected from flame retardants, nucleating agents, coupling agents, fillers, plasticizers, impact modifiers, lubricants, antibacterial agents, mold release agents, heat stabilizers, antioxidants, inorganic additives, ultraviolet stabilizers, antistatic agents, pigments, and dyes. A thermoplastic resin composition further comprising. A molded article comprising the thermoplastic resin composition of any one of claims 1 to 11. In paragraph 12:
The molded product has an Izod impact strength of 50 kgf·cm/cm or more as measured according to ASTM D256 on a notched 1/4” thick specimen. In paragraph 12:
The molded product has a surface resistance of 1 × 10 ¹² Ω/□ or less as measured on a 100 mm × 100 mm × 3.2 mm specimen according to ASTM D257.