Title of Invention: Thermoplastic resin composition and molded article thereof
technical field
[One]
[Cross Citation with Application(s)]
[2]
This application claims the benefit of priority based on Korean Patent Application No. 10-2020-0091649 dated July 23, 2020 and Korean Patent Application No. 10-2020-0176203 filed again on December 16, 2020 based thereon. All content disclosed in the literature of the application is incorporated as a part of this specification.
[3]
The present invention relates to a thermoplastic resin composition and a molded article thereof, and more particularly, to a conventional ASA resin, mechanical properties, weather resistance, processability, etc. are maintained at the same or higher level, and display readability is excellent, and a general mold or general mold without a separate corrosion mold It relates to a matte thermoplastic resin composition capable of injection or extrusion in a T-die extruder, and a molded article thereof.
background
[4]
The acrylate compound-styrene-acrylonitrile copolymer (hereinafter referred to as 'ASA resin') has weather resistance, aging resistance, chemical resistance, rigidity, impact resistance, and processability. It is widely used in automobiles, miscellaneous goods and construction materials.
[5]
As a noteworthy point, customer preference for exterior designs that do not have artificial plastic feel in the field of electrical/electronic products is increasing significantly, but development of matte ASA resins that can satisfy this is insufficient.
[6]
Conventionally, low-gloss ASA resins were realized by injecting crystalline resins such as nylon into ASA resins or surface treatment with separate low-light sprays, but it is an important property in products with external displays such as air conditioners and refrigerators. The readability of the display was greatly reduced, and it was difficult to secure the readability of the matte ASA resin even when processing such as extrusion/injection was performed in a separate corrosion mold.
[7]
[Prior art literature]
[8]
[Patent Literature]
[9]
KR 2009-0095764 A
DETAILED DESCRIPTION OF THE INVENTION
technical challenge
[10]
In order to solve the problems of the prior art as described above, the present invention has excellent display readability while maintaining the same or higher mechanical properties, weather resistance and processability compared to the conventional ASA resin, and a general mold or general T-die without a separate corrosion mold An object of the present invention is to provide a matte thermoplastic resin composition capable of injection or extrusion in an extruder, and a molded article thereof.
[11]
The above and other objects of the present invention can all be achieved by the present invention described below.
means of solving the problem
[12]
In order to achieve the above object, the present invention provides 100 parts by weight of a base resin comprising an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer; and 0.5 to 10 parts by weight of a matting agent having a refractive index of 1.46 to 1.53, and provides a thermoplastic resin composition characterized in that it satisfies the following Equations 1 and 2.
[13]
[Equation 1]
[14]
G ≤ 20
[15]
(Where G is the sheet gloss of size 0.15T measured with a glossmeter at 60°.)
[16]
[Equation 2]
[17]
Hz < Tt
[18]
(Where Hz and Tt are the haze (%) and total light transmittance (%) of the sheet of size 0.15T, respectively.)
[19]
In addition, the present invention provides 100 parts by weight of a base resin comprising an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer; and 0.5 to 10 parts by weight of a matting agent having a refractive index of 1.46 to 1.53, and provides a thermoplastic resin composition, characterized in that the readability (R) calculated by the following Equation 3 is 1 to 1.4.
[20]
[Equation 3]
[21]
R = Rc/Ro
[22]
(where Rc is the area of ​​the brightness peak measured under the conditions of number stroke width: 2mm, final light quantity: 14 lux, LED light source: 150 lm/W, light source and sheet distance: contact, and sheet thickness: 0.15T, and Ro is the area of ​​the theoretical brightness peak with no light bleed.)
[23]
The readability (R) of the present disclosure can be defined as the degree of light bleeding occurring at the boundary between the light emitting part and the non-emitting part of the display. If there is little light scattering, the brightness of the emitting part falls from 240 to the brightness of the non-emitting part steeply (normal). ). Accordingly, the more severe the light blur, the lower the readability, and the greater the readability R value. In FIG. 1, an interval 5 of the x-axis position is about 1 mm. Here, the brightness 160 is the brightness value of the gray film as a reference.
[24]
The base resin is preferably acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer 10 to 70% by weight, polymethacrylate-based resin 5 to 50% by weight, and methacrylate-aromatic vinyl compound-vinyl cyan compound 10 to 50% by weight of the copolymer.
[25]
The total light transmittance Tt is preferably 80 to 95%, and the haze Hz may be preferably 1 to 90%.
[26]
The acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer preferably contains i) acrylate rubber having an average particle diameter of 0.05 to 0.15 μm in an amount of 40 to 60% by weight and a graft ratio of 40% or more -aromatic vinyl Compound-vinyl cyan compound graft copolymer, ii) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer containing 40 to 60 wt% of acrylate rubber having an average particle diameter of 0.05 to 0.15 μm and having a graft rate of less than 40% , and iii) an acrylate containing an acrylate rubber having an average particle diameter of 0.33 to 0.5 μm in an amount of 40 to 60% by weight - an aromatic vinyl compound - may be at least one selected from the group consisting of a vinyl cyan compound graft copolymer.
[27]
Based on 100% by weight of the total base resin, preferably the i) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer is included in an amount of 30 to 60% by weight, and the ii) acrylate-aromatic vinyl compound- The vinyl cyan compound graft copolymer may be included in an amount of 35 to 65 wt%, and iii) the acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer may be included in an amount of 5 to 30 wt%.
[28]
The polymethacrylate-based resin may preferably include 65 to 80% by weight of methacrylate and 20 to 35% by weight of a vinyl cyanide compound.
[29]
The polymethacrylate-based resin may preferably have a weight average molecular weight of 50,000 to 200,000 g/mol.
[30]
The polymethacrylate-based resin is preferably a) a polymethacrylate-based resin having a weight average molecular weight of 30,000 to 90,000 g/mol, b) a polymethacrylate-based resin having a weight average molecular weight of 100,000 to 200,000 g/mol , and c) may be at least one selected from the group consisting of polymethacrylate-based resins having a weight average molecular weight of greater than 200,000 g/mol to 300,000 g/mol or less.
[31]
Preferably, based on 100% by weight of the total base resin, a) the polymethacrylate-based resin is included in 5 to 30% by weight, and b) the polymethacrylate-based resin is included in 5 to 30% by weight, , c) the polymethacrylate-based resin may be included in an amount of 10 to 50% by weight.
[32]
The methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer may preferably include 65 to 85 wt% of methacrylate, 10 to 30 wt% of an aromatic vinyl compound, and 5 to 10 wt% of a vinyl cyan compound .
[33]
The methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer may preferably have a weight average molecular weight of 80,000 to 200,000 g/mol.
[34]
The matting agent may preferably be a polyamide resin having a refractive index of 1.46 to 1.53.
[35]
In addition, the present invention provides a molded article comprising the thermoplastic resin composition.
[36]
The molded article may be preferably a film for a hidden display or a matte sheet material.
[37]
The film or sheet may preferably have a thickness of 0.05 to 0.5T.
Effects of the Invention
[38]
According to the present invention, as compared to conventional ASA resin, mechanical properties, weather resistance, processability, etc. are maintained at the same or higher level, display readability is excellent, and it is a matte thermoplastic that can be injected or extruded in a general mold or a general T-die extruder without a separate corrosion mold There is an effect of providing a resin composition and a molded article thereof.
Brief description of the drawing
[39]
1 is a graph showing changes in brightness according to positions for measuring display readability.
[40]
2 is a picture taken while the display of the product is turned on to confirm the excellent display readability of the air conditioner product according to the present invention. The top picture is a picture of a conventional high-gloss air conditioner product, and the middle picture is a conventional matte air conditioner product. It is a photograph of the product, and the photograph at the bottom is a photograph of the air conditioner product according to the present invention.
[41]
3 is a photograph of the film extruder used in Examples.
Modes for carrying out the invention
[42]
Hereinafter, the thermoplastic resin composition of the present disclosure and a molded article thereof will be described in detail.
[43]
As a result of continuous research to realize a matting effect and display readability, etc. in ASA resin as a solution for upgrading and diversifying the appearance of air conditioner products, the present inventors put a certain amount of a matting agent having a refractive index within a specific range into the ASA resin, and the sheet When the gloss, haze (%) and total light transmittance (%) are adjusted in a predetermined relation, it has a matte appearance that does not have an artificial plastic feel, excellent display readability, and it is confirmed that injection is possible in a general mold without a separate corrosion mold And, based on this, further research was completed to complete the present invention.
[44]
The thermoplastic resin composition of the present invention comprises 100 parts by weight of a base resin comprising an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer; and 0.5 to 10 parts by weight of a matting agent having a refractive index of 1.46 to 1.53, characterized in that it satisfies the following Equations 1 and 2, and in this case, mechanical properties, weather resistance, and workability are maintained at the same level or higher compared to conventional ASA resins , excellent display readability, there is an advantage of providing a matte thermoplastic resin composition and a molded article thereof that can be injected in a general mold without a separate corrosion mold.
[45]
[Equation 1]
[46]
G ≤ 20
[47]
(Where G is the sheet gloss of size 0.15T measured with a glossmeter at 60°.)
[48]
[Equation 2]
[49]
Hz < Tt
[50]
(Where Hz and Tt are the haze (%) and total light transmittance (%) of the sheet of size 0.15T, respectively.)
[51]
The thermoplastic resin composition may satisfy the following Equation 1a as a specific example, and in this case, mechanical properties, weather resistance and processability are maintained at the same or higher level, display readability is excellent, and injection can be performed in a general mold without a separate corrosion mold. have.
[52]
[Equation 1a]
[53]
7 ≤ G ≤ 20
[54]
The Tt is preferably 80 or more, more preferably 85 or more, and the Hz is preferably 10 or less. There is an advantage that injection can be performed in a general mold without a separate corrosion mold.
[55]
In addition, the thermoplastic resin composition of the present invention includes 100 parts by weight of a base resin including an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer; and 0.5 to 10 parts by weight of a matting agent having a refractive index of 1.46 to 1.53, and is characterized in that the readability (R) calculated by the following Equation 3 is 1 to 1.4, and even in this case, mechanical properties, weather resistance and There is an advantage of providing a matte thermoplastic resin composition and a molded article thereof that are excellent in display readability and can be injected in a general mold without a separate corrosion mold while maintaining processability and the like at the same or higher level.
[56]
[Equation 3]
[57]
R = Rc/Ro
[58]
(where Rc is the area of ​​the brightness peak measured under the conditions of number stroke width: 2mm, final light quantity: 14 lux, LED light source: 150 lm/W, light source and sheet distance: contact, and sheet thickness: 0.15T, and Ro is the area of ​​the theoretical brightness peak with no light bleed.)
[59]
In this description, the brightness was calculated using the RGB values ​​of the photographed image in the paint board, and the brightness values ​​measured according to positions were displayed with reference to FIG. 1 below to obtain a graph of the change in brightness according to positions. The brightness value ranges from 0 to 240, where 0 means black and 240 means white.
[60]
Hereinafter, each component constituting the thermoplastic resin composition of the present disclosure will be described in detail as follows.
[61]

[62]
The base resin of the present substrate preferably includes an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer, a polymethacrylate-based resin and a methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer, more preferably acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer 10 to 70% by weight, polymethacrylate-based resin 5 to 50% by weight, and methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer 10 to 50 % by weight.
[63]
Acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer
[64]
The acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer of the present disclosure preferably contains i) an acrylate rubber having an average particle diameter of 0.05 to 0.15 μm in an amount of 40 to 60% by weight and a graft ratio of 40% or more. -Aromatic vinyl compound-vinyl cyan compound graft copolymer, ii) acrylate rubber having an average particle diameter of 0.05 to 0.15 μm in an amount of 40 to 60 wt% and a graft rate of less than 40% - Aromatic vinyl compound-vinyl cyan compound graft copolymer, and iii) an acrylate containing an acrylate rubber having an average particle diameter of 0.33 to 0.5 μm in an amount of 40 to 60% by weight-aromatic vinyl compound-vinyl cyan compound graft copolymer; , in this case, there is an excellent effect in processability, elongation, surface quality, weather resistance and transparency.
[65]
i) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer
[66]
The i) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer of the present disclosure is preferably 30 to 60% by weight, more preferably 40 to 60% by weight, based on 100% by weight of the total base resin, More preferably 40 to 55% by weight, most preferably 45 to 55% by weight, and within this range, there is an excellent effect in processability, elongation, surface quality, weather resistance and transparency.
[67]
The i) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer preferably has a graft ratio of 40% to 55%, more preferably 40% to 50%, and still more preferably 40% to 45%. and within this range, there is an excellent effect in workability, elongation, surface quality, weather resistance and transparency.
[68]
In the present description, the graft rate is determined by dissolving the graft copolymer powder in acetone, stirring for 24 hours, centrifuging at 20000 rpm for 3 hours to separate the insoluble and soluble components, and then drying the separated insoluble content for 24 hours. It can be calculated by Equation 4.
[69]
[Equation 4]
[70]
Graft rate (%)=[(measured insoluble content - Rubber content of graft copolymer)/Rubber content of graft copolymer]*100
[71]
In the present description, unless otherwise defined, content is based on weight.
[72]
The i) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer preferably contains 40 to 60 wt% of an acrylate rubber having an average particle diameter of 0.05 to 0.15 μm, 20 to 40 wt% of an aromatic vinyl compound, and 10 wt% of a vinyl cyanide compound to 20% by weight, and there is an excellent effect in workability, elongation, surface quality, weather resistance and transparency within this range.
[73]
As a preferred example, the i) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer comprises 45 to 55 wt% of an acrylate rubber, 30 to 40 wt% of an aromatic vinyl compound, and 10 to 20 wt% of a vinyl cyan compound It can be made, and within this range, there is an excellent effect of weather resistance, fluidity, tensile strength and impact strength.
[74]
In the present description, a polymer including a certain compound means a polymer polymerized including the compound, and a unit in the polymerized polymer is derived from the compound.
[75]
The i) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer may be prepared by, for example, emulsion polymerization, and in this case, chemical resistance, weather resistance, fluidity, tensile strength and impact strength are excellent.
[76]
The emulsion polymerization is not particularly limited if the emulsion graft polymerization method is commonly carried out in the art to which the present invention belongs.
[77]
In the present description, the acrylate may be, for example, at least one selected from the group consisting of alkyl acrylates having 2 to 8 carbon atoms in the alkyl group, preferably an alkyl acrylate having 4 to 8 carbon atoms in the alkyl group, more preferably butyl acrylate or ethylhexyl acrylate.
[78]
In the present description, the aromatic vinyl compound may be, for example, at least one selected from the group consisting of styrene, α-methylstyrene, m-methylstyrene, p-methylstyrene, and p-tert-butylstyrene, and preferably styrene.
[79]
In the present description, the vinyl cyan compound may be, for example, at least one selected from the group consisting of acrylonitrile, methnitrolonitrile, ethyl acrylonitrile and isopropyl acrylonitrile, and is preferably acrylonitrile.
[80]
The acrylate rubber of the i) graft copolymer preferably has an average particle diameter of 0.1 to 0.15 μm, more preferably 0.12 to 0.15 μm, and still more preferably 0.12 to 0.14 μm, within this range, the finally produced thermoplastic Excellent weather resistance, colorability, impact strength, chemical resistance and surface gloss properties can be imparted to the resin composition.
[81]
In the present description, the average particle diameter may be measured using dynamic light scattering, and in detail, may be measured using Nicomp 380 equipment (product name, manufacturer: PSS).
[82]
In addition, in the present description, the average particle diameter may mean an arithmetic average particle diameter in a particle size distribution measured by a dynamic light scattering method, specifically, an average particle diameter of scattering intensity. At this time, as a specific example of measurement, the sample is prepared by diluting 0.1 g of Latex (TSC 35-50 wt%) 1,000-5,000 times with distilled water, and the measurement method is auto-dilution and measured with a flow cell, and the measurement mode is dynamic light scattering ( Dynamic light scattering) method/Intensity 300KHz/Intensity-weight Gaussian Analysis can be used, and the setting value can be measured with a temperature of 23℃, a measurement wavelength of 632.8nm, and a channel width of 10μsec.
[83]
ii) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer
[84]
ii) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer of the present disclosure is preferably 35 to 65% by weight, more preferably 40 to 65% by weight, based on 100% by weight of the total base resin, More preferably 50 to 65% by weight, and most preferably 55 to 65% by weight, there is an excellent effect in processability, elongation, surface quality, weather resistance and transparency within this range.
[85]
The ii) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer preferably has a graft rate of 20% to 39%, more preferably 25% to 35%, and still more preferably 25% to 30%. And within this range, there is an excellent effect in workability, elongation, surface quality, weather resistance and transparency.
[86]
The ii) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer preferably contains 40 to 60 wt% of an acrylate rubber having an average particle diameter of 0.05 to 0.15 μm, 20 to 40 wt% of an aromatic vinyl compound, and 10 wt% of a vinyl cyanide compound to 20% by weight, and there is an excellent effect in workability, elongation, surface quality, weather resistance and transparency within this range.
[87]
As a preferred example, the ii) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer comprises 45 to 55 wt% of an acrylate rubber, 30 to 40 wt% of an aromatic vinyl compound, and 10 to 20 wt% of a vinyl cyanide compound It can be made, and within this range, there is an excellent effect of weather resistance, fluidity, tensile strength and impact strength.
[88]
The ii) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer may be prepared by, for example, emulsion polymerization, and in this case, chemical resistance, weather resistance, fluidity, tensile strength and impact strength are excellent.
[89]
The emulsion polymerization is not particularly limited if the emulsion graft polymerization method is commonly carried out in the art to which the present invention belongs.
[90]
ii) The acrylate rubber of the graft copolymer preferably has an average particle diameter of 0.1 to 0.15 μm, more preferably 0.12 to 0.15 μm, and still more preferably 0.12 to 0.14 μm, within this range, the finally produced thermoplastic Excellent weather resistance, colorability, impact strength, chemical resistance and surface gloss properties can be imparted to the resin composition.
[91]
iii) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer
[92]
iii) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer of the present disclosure is preferably 5 to 30% by weight, more preferably 10 to 30% by weight, based on 100% by weight of the total base resin, More preferably, it is included in an amount of 10 to 25% by weight, and most preferably 15 to 20% by weight, and there is an excellent effect in weather resistance, fluidity, tensile strength and impact strength within this range.
[93]
The iii) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer preferably contains 40 to 60 wt% of an acrylate rubber having an average particle diameter of 0.33 to 0.5 μm, 25 to 45 wt% of an aromatic vinyl compound, and 10 wt% of a vinyl cyanide compound to 20% by weight, and has excellent effects in weather resistance, fluidity, tensile strength and impact strength within this range.
[94]
iii) The acrylate rubber of the graft copolymer may preferably have an average particle diameter of 0.35 to 0.5 μm, more preferably 0.38 to 0.5 μm, still more preferably 0.4 to 0.5 μm, and weather resistance within this range. Although good, it has excellent mechanical strength such as fluidity, tensile strength and impact strength.
[95]
As a preferred example, the iii) graft copolymer may include 45 to 55% by weight of an acrylate rubber, 30 to 40% by weight of an aromatic vinyl compound, and 10 to 20% by weight of a vinyl cyan compound, and weather resistance, within this range, It has excellent fluidity, tensile strength and impact strength.
[96]
The iii) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer may be included in an amount of preferably 5 to 15% by weight, more preferably 10 to 15% by weight, within this range weather resistance, fluidity, and tensile strength. It has excellent strength and impact strength.
[97]
The iii) graft copolymer may be prepared by, for example, emulsion polymerization, and in this case, it has excellent effects in weather resistance, fluidity, tensile strength and impact strength.
[98]
The emulsion polymerization is not particularly limited if the emulsion graft polymerization method is commonly carried out in the art to which the present invention belongs.
[99]
Polymethacrylate-based resin
[100]
The polymethacrylate of the present disclosure preferably contains at least 65% by weight, more preferably at least 70% by weight, and still more preferably at least 75% by weight of a methacrylate compound, within this range, gloss, hardness, weather resistance and There is an effect excellent in transparency and the like.
[101]
The polymethacrylate-based resin may preferably include 65 to 80% by weight of methacrylate and 20 to 35% by weight of a vinyl cyanide compound, and excellent effects such as gloss, hardness, weather resistance and transparency within this range there is
[102]
The polymethacrylate-based resin may have a weight average molecular weight of preferably 50,000 to 200,000 g/mol, more preferably 100,000 to 150,000 g/mol, and has excellent gloss, hardness, weather resistance and transparency within this range. It works.
[103]
The polymethacrylate-based resin is preferably a) a polymethacrylate-based resin having a weight average molecular weight of 30,000 to 90,000 g/mol, b) a polymethacrylate-based resin having a weight average molecular weight of 100,000 to 200,000 g/mol , and c) may be at least one selected from the group consisting of polymethacrylate-based resins having a weight average molecular weight of more than 200,000 g/mol to 300,000 g/mol or less, and in this case, excellent effects such as gloss, hardness, weather resistance and transparency there is
[104]
In the present description, unless otherwise defined, the weight average molecular weight may be measured using GPC (Gel Permeation Chromatography, waters breeze), and as a specific example, GPC (Gel Permeation Chromatography, waters breeze) using THF (tetrahydrofuran) as the eluent. ) can be measured as a relative value for a standard PS (standard polystyrene) sample. At this time, as a specific example of measurement, solvent: THF, column temperature: 40°C, flow rate: 0.3ml/min, sample concentration: 20mg/ml, injection amount: 5 μl, column model: 1xPLgel 10㎛ MiniMix-B (250x4.6mm) + 1xPLgel 10㎛ MiniMix-B (250x4.6mm) + 1xPLgel 10㎛ MiniMix-B Guard (50x4.6mm), equipment name: Agilent 1200 series system, Refractive index detector: Agilent G1362 RID, RI temperature: 35℃, data processing: Agilent ChemStation S/W, test method (Mn, Mw and PDI): It can be measured under OECD TG 118 conditions.
[105]
The a) polymethacrylate-based resin is preferably 5 to 30% by weight, more preferably 10 to 30% by weight, more preferably 10 to 25% by weight, based on 100% by weight of the total base resin, Most preferably, it is included in an amount of 10 to 20% by weight, and there is an excellent effect of gloss, hardness, weather resistance and transparency within this range.
[106]
b) the polymethacrylate-based resin is preferably 5 to 30% by weight, more preferably 10 to 30% by weight, even more preferably 10 to 25% by weight, based on 100% by weight of the total base resin, Most preferably, it is included in an amount of 10 to 20% by weight, and there is an excellent effect of gloss, hardness, weather resistance and transparency within this range.
[107]
c) the polymethacrylate-based resin is preferably 10 to 50% by weight, more preferably 10 to 45% by weight, more preferably 15 to 45% by weight, based on 100% by weight of the total base resin, Most preferably, it is included in an amount of 15 to 40% by weight, and there is an excellent effect of gloss, hardness, weather resistance and transparency within this range.
[108]
In the present description, the methacrylate compound may be preferably an alkyl methacrylate having 1 to 15 carbon atoms in the alkyl group, and preferred examples include methyl methacrylate, ethyl methacrylate, butyl methacrylate, and 2-ethylbutyl methacrylate. It may be at least one selected from the group consisting of acrylate, 2-ethylhexyl methacrylate and lauryl methacrylate, and more preferably an alkyl methacrylate containing a chain alkyl group having 1 to 4 carbon atoms, and further Preferably, it may be methyl methacrylate.
[109]
The polymethacrylate-based resin may be prepared by, for example, solution polymerization, bulk polymerization, emulsion polymerization or suspension polymerization, and the solution polymerization, bulk polymerization, emulsion polymerization, and suspension polymerization are each commonly used in the art to which the present invention pertains. In the case of emulsion polymerization and suspension polymerization to be carried out, it is not particularly limited.
[110]
Methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer
[111]
The methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer of the present disclosure is preferably composed of 65 to 85% by weight of methacrylate, 10 to 30% by weight of an aromatic vinyl compound, and 5 to 10% by weight of a vinylcyanide compound. and more preferably 65 to 75% by weight of methacrylate, 15 to 25% by weight of an aromatic vinyl compound, and 5 to 10% by weight of a vinyl cyanide compound, and has better weather resistance within this range, It has excellent fluidity, tensile strength and impact strength, and has an emotionally soft effect due to its low surface roughness value.
[112]
The methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer may be preferably a methyl methacrylate-styrene-acrylonitrile copolymer, and in this case, the weather resistance is more excellent and the surface roughness value is low and emotionally soft. It works.
[113]
The methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer may preferably have a weight average molecular weight of 80,000 to 200,000 g/mol, more preferably 100,000 to 150,000 g/mol, still more preferably It may be 120,000 to 140,000 g/mol, and within this range, the weather resistance is better, the fluidity, tensile strength and impact strength are excellent, and the surface roughness value is low, so there is an emotionally soft effect.
[114]
The methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer is preferably a methyl methacrylate-styrene-acrylonitrile copolymer having a weight average molecular weight of 70,000 to 90,000 g/mol, and a weight average molecular weight of 120,000 to 140,000 It may be at least one selected from the group consisting of g/mol of methyl methacrylate-styrene-acrylonitrile copolymer, and in this case, transparency and weather resistance are excellent.
[115]
The methyl methacrylate-styrene-acrylonitrile copolymer may be prepared by, for example, solution polymerization, bulk polymerization, emulsion polymerization, or suspension polymerization, and the solution polymerization, bulk polymerization, emulsion polymerization and suspension polymerization are each of the present invention. In the case of emulsion polymerization and suspension polymerization methods commonly carried out in the art, it is not particularly limited.
[116]

[117]
The matting agent of the present substrate may have a refractive index of, for example, 1.46 to 1.53, preferably 1.47 to 1.53, more preferably 1.50 to 1.53, and still more preferably 1.51 to 1.53, and within this range, mechanical compared to conventional ASA resins While physical properties, weather resistance and processability are maintained at the same level or higher, display readability is excellent, and injection can be performed in a general mold without a separate corrosion mold.
[118]
In the present description, the refractive index may be measured with REICHERT MARK 2 PLUS, at 25° C., by ASTM Method D 542-50.
[119]
The matting agent is preferably at least one selected from the group consisting of a PMMA-based matting agent and polyamide, more preferably polyamide, and the polyamide means a thermoplastic polymer including an amide bond, and specific For example polyamide 6, polyamide 66 (PA 6.6), polyamide 46, polyamide ll, polyamide 12, polyamide 610, polyamide 612, polyamide 6/66, polyamide 6/612, polyamide MXD6, poly Amide 6/MXD6, Polyamide 66/MXD6, Polyamide 6T, Polyamide 6I, Polyamide 6/6T, Polyamide 6/6I, Polyamide 66/6T, Polyamide 66/6I, Polyamide 6/6T/6I , Polyamide 66/6T/6I, Polyamide 9T, Polyamide 9I, Polyamide 6/9T, Polyamide 6/9I, Polyamide 66/9T, Polyamide 6/12/9T, Polyamide 66/12/9T , polyamide 6/12/9I and polyamide 66/12/6I may be at least one selected from the group consisting of, more preferably polyamide 6, polyamide 6.6, or a mixture thereof, even more preferably polyamide 6/12/9I Amide 66 (PA 6.6).
[120]
The polyamide may have a melting point of, for example, 230 °C or higher, preferably 240 °C or higher, more preferably 250 °C or higher, and even more preferably 260 to 270 °C.
[121]
The polyamide has, for example, a relative viscosity (96% sulfuric acid solution) of 2.0 to 4.0, preferably 2.0 to 3.5, more preferably 2.0 to 3.0, and still more preferably 2.4 to 2.7.
[122]
In the present description, the relative viscosity can be measured with an Ubbelohde viscometer by the ISO 307 sulfuric acid method.
[123]
The matting agent preferably comprises 1 to 10% by weight, more preferably 2 to 10% by weight, still more preferably 3 to 8% by weight, most preferably 3 to 5% by weight, within this range There is an advantage in that the gloss is lowered, the matte effect is large and the physical property balance is excellent.
[124]
The PMMA-based matting agent is not particularly limited if it is a PMMA-based matting agent commonly used in the art to which the present invention belongs, as long as it has a refractive index according to the present invention.
[125]
The method for producing the PMMA-based matting agent and polyamide is not particularly limited if it is a polymerization method commonly carried out in the art to which the present invention belongs, and is commercially available if it meets the definitions of the PMMA-based matting agent and polyamide according to the present invention. It is free to purchase and use.
[126]

[127]
The thermoplastic resin composition of the present disclosure preferably satisfies the following Equations 1 and 2, and in this case, mechanical properties, weather resistance and processability are maintained at the same or higher level compared to conventional ASA resins, and display readability is excellent, and a separate corrosion mold There is an advantage that injection can be performed in a general mold without the need.
[128]
[Equation 1]
[129]
G ≤ 20
[130]
(Where G is the sheet gloss of size 0.15T measured with a glossmeter at 60°.)
[131]
[Equation 2]
[132]
Hz < Tt
[133]
(Where Hz and Tt are the haze (%) and total light transmittance (%) of the sheet of size 0.15T, respectively.)
[134]
The thermoplastic resin composition may satisfy the following Equations 1a and 2a as specific examples.
[135]
[Equation 1a]
[136]
7 ≤ G ≤ 20
[137]
[Equation 2a]
[138]
Hz + 3.0 < Tt
[139]
In addition, the thermoplastic resin composition may satisfy the following Equations 1b and 2a as a more specific example.
[140]
[Equation 1b]
[141]
7 ≤ G ≤ 15
[142]
[Equation 2a]
[143]
Hz + 3.0 < Tt
[144]
The thermoplastic resin composition preferably has a total light transmittance Tt of 80 to 95%, more preferably 85 to 95%, still more preferably 87 to 91%, and preferably has a haze Hz of 1 to 90%, more preferably Preferably, it may be 2 to 90%, more preferably 2 to 88%, and within this range, mechanical properties, weather resistance and processability are maintained at the same or higher level compared to conventional ASA resins, and display readability is excellent and separate corrosion There is an advantage that injection can be performed in a general mold without a mold.
[145]
The thermoplastic resin composition preferably has a readability (R) calculated by the following formula (3) of 1 to 1.4, more preferably 1.0 to 1.3, and still more preferably 1.0 to 1.2, and within this range, mechanical compared to conventional ASA resins While physical properties, weather resistance and processability are maintained at equal or higher levels, there is an effect of excellent display readability.
[146]
[Equation 3]
[147]
R = Rc/Ro
[148]
(where Rc is the area of ​​the brightness peak measured under the conditions of number stroke width: 2mm, final light quantity: 14 lux, LED light source: 150 lm/W, light source and sheet distance: contact, and sheet thickness: 0.15T, and Ro is the area of ​​the theoretical brightness peak with no light bleed.)
[149]
The thermoplastic resin composition preferably has an average surface roughness (Ra) of 0.5 to 3, more preferably 1 to 2.7, still more preferably 1.5 to 2.6, measured at 5 points with an optical profiler system, and even more Preferably it is 1.8 to 2.3, and while the matte effect is well expressed within this range, there is an excellent effect in softness, luxury and naturalness.
[150]
In the present substrate, the surface roughness (Ra) is obtained by preparing the thermoplastic resin composition as a sheet of 0.15T as in the following example, and then using the optical profiler system (NV-2700, Nanosystem Co., Ltd.), 10 times the objective lens X 1 times the eyepiece ( FOV: 628 µm X 471 µm), mode: WSI Envelope, Scan range: It is an average value measured at 5 points under the analysis conditions of ±10 µm, and its unit is µm.
[151]
The thermoplastic resin composition may have a weather resistance (ΔE) of 5.0 or less, preferably 4.9 or less, more preferably 4.0 or less, and still more preferably 3.5 or less, as measured by the SAE J1960 method for 2000 hours.
[152]
The thermoplastic resin composition has, for example, a flow index (MI) (220° C., load 10 kg) according to ASTM D1238 of 4 g/10 min or more, preferably 5 g/10 min or more, and more preferably 6 g/10 min or more. and more preferably 9 g/10 min or more, and may be 4 to 15 g/10 min as a specific example.
[153]
The thermoplastic resin composition may preferably have an elongation (1/8 inch) of 20 or more according to ASTM D638, more preferably 25 or more, and specifically 20 to 40, preferably 29 to 38.
[154]
The thermoplastic resin composition preferably has a hardness of 70 or more according to ASTM D785, more preferably 75 or more, and may be 70 to 120, preferably 78 to 116 as a specific example.
[155]
The thermoplastic resin composition preferably has an injection gloss (3.17T) measured at 60° with a gloss meter VG7000 of 50 or less, more preferably 45 or less, and specifically 20 to 50, preferably 23 to 42 can be
[156]
The thermoplastic resin composition preferably has an Izod impact strength (1/4 inch) according to ASTM 256 of 4 kg·cm/cm or more, and may be 4 to 7 kg·cm/cm as a specific example.
[157]
The thermoplastic resin composition is optionally a heat stabilizer, a light stabilizer, a dye, a pigment, a colorant, a mold release agent, an antistatic agent, an antibacterial agent, a processing aid, a metal deactivator, a flame retardant, a flame retardant, an anti-drip agent, an anti-friction agent and a wear-resistant agent. 0.01 to 5 parts by weight, 0.05 to 3 parts by weight, 0.1 to 2 parts by weight, or 0.5 to 1 parts by weight of at least one selected from the group consisting of There is an advantage in that the necessary physical properties are well implemented without lowering the
[158]
The thermoplastic resin composition may include, for example, 0 to 35% by weight of the aromatic vinyl polymer, preferably 10 to 35% by weight, more preferably less than 10% by weight, even more preferably Preferably, it contains less than 5% by weight, and most preferably does not contain it. Within this range, the weather resistance is excellent, and the surface roughness value is significantly lowered, so that the gloss is even and the hand feels soft when touched.
[159]
The method for preparing the thermoplastic resin composition of the present invention includes, for example, 100 parts by weight of a base resin including an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer; and 0.5 to 10 parts by weight of a matting agent having a refractive index of 1.46 to 1.53, and then mixing to prepare pellets using an extrusion kneader under conditions of 220 to 280 ° C.
[160]
[Equation 1]
[161]
G ≤ 20
[162]
(Where G is the sheet gloss of size 0.15T measured with a glossmeter at 60°.)
[163]
[Equation 2]
[164]
Hz < Tt
[165]
(Here, Hz and Tt are the haze (%) and total light transmittance (%) of the sheet of 0.15T size, respectively.) It is characterized in that it satisfies, and in this case, mechanical properties, weather resistance, and workability, etc. compared to conventional ASA resins While maintaining the same or better, display readability is excellent, and there is an advantage that injection can be performed in a general mold without a separate corrosive mold.
[166]
The method for producing the thermoplastic resin composition shares all the technical characteristics of the aforementioned thermoplastic resin composition. Therefore, a description of the overlapping portion will be omitted.
[167]
The step of preparing the pellets using the extrusion kneader may be preferably carried out under 220 to 280 ℃, more preferably under 220 to 250 ℃, wherein the temperature means the temperature set in the cylinder.
[168]
The extrusion kneader is not particularly limited if it is an extrusion kneader commonly used in the art to which the present invention belongs, and may preferably be a twin-screw extrusion kneader.
[169]

[170]
The molded article of the present substrate is characterized in that it contains the thermoplastic resin composition of the present substrate, and in this case, mechanical properties, weather resistance and processability are maintained at the same or higher level, and display readability is excellent.
[171]
The molded article may be, for example, an extrusion-molded article or an injection-molded article, and preferably a film or sheet material for a hidden display.
[172]
The film or sheet may preferably have a thickness of 0.05 to 0.5T, more preferably 0.1 to 0.5T, and within this range, matt characteristics and display readability are excellent.
[173]
The molded article may be preferably manufactured including the step of extruding or injecting the thermoplastic resin composition of the present invention at a molding temperature of 190 to 250 °C, preferably at 210 to 240 °C, and within this range, without a separate corrosion mold It can be manufactured in a general mold, and there is an advantage in that the matte characteristics and display readability are well expressed in the product.
[174]
In describing the thermoplastic resin composition of the present invention, its manufacturing method and molded article, other conditions or equipment not explicitly described may be appropriately selected within the range commonly practiced in the art, and it is specified that there is no particular limitation. do.
[175]
Hereinafter, preferred examples are presented to help the understanding of the present invention, but the following examples are merely illustrative of the present invention, and it will be apparent to those skilled in the art that various changes and modifications are possible within the scope and spirit of the present invention, It goes without saying that such variations and modifications fall within the scope of the appended claims.
[176]
[Example]
[177]
Materials used in Examples 1 to 4 and Comparative Examples 1 to 4 are as follows.
[178]
A-1) Graft copolymer of emulsion polymerization (50 wt% of butyl acrylate polymer units having an average particle diameter of 500 nm, 35 wt% of styrene-derived units, 15 wt% of acrylonitrile-derived units)
[179]
A-2) Graft copolymer of emulsion polymerization (50 wt% of butyl acrylate polymer-derived units having an average particle diameter of 90 nm, 35 wt% of styrene-derived units, 15 wt% of acrylonitrile-derived units, 30% graft rate)
[180]
A-3) Graft copolymer of emulsion polymerization (50 wt% of butyl acrylate polymer-derived units having an average particle diameter of 80 nm, 35 wt% of styrene-derived units, 15 wt% of acrylonitrile-derived units, and 40% graft ratio)
[181]
B-1) PMMA resin (weight average molecular weight 40,000 g/mol, MMA-derived units 95 wt%, MA-derived units 5 wt%)
[182]
B-2) PMMA resin (LG Chemical, IH830)
[183]
B-3) PMMA resin (weight average molecular weight 230,000 g/mol, MMA-derived units 97% by weight, MA-derived units 3% by weight)
[184]
C-1) Bulk polymerization type SAMMA resin (70 wt% of methyl methacrylate-derived unit, 20 wt% of styrene-derived unit, 10 wt% of acrylonitrile-derived unit, weight average molecular weight 150,000 g/mol)
[185]
C-2) Bulk polymerization type SAMMA resin (70 wt% of methyl methacrylate-derived units, 20 wt% of styrene-derived units, 10 wt% of acrylonitrile-derived units, and a weight average molecular weight of 70,000 g/mol)
[186]
D-1) Crystalline resin with refractive index of 1.53 (PA 66)
[187]
D-2) Crystalline resin with refractive index of 1.57 (syndiotactic PA resin)
[188]
E) SAN resin (LG Chemical, 90HR)
[189]
Examples 1 to 4 and Comparative Examples 1 to 4
[190]
Each of the components and contents listed in Table 1 below were prepared into pellets using an extrusion kneader in a 36 pie standard at 280° C. in a twin-screw extruder. The prepared pellets are uniformly manufactured into sheets with a thickness of 0.15T through a film extruder, and haze (Hz), total light transmittance (Tt), readability, sheet gloss and surface roughness (Ra) are used as samples. ) and the like were measured by the following method. At this time, the film extruder uses a single screw extruder for sheet molding (manufactured by Collin, E20T product, 20 pie, L/D: 25), and the temperature condition is 50, 200, 210, 210 ° C. And the die part temperature was set to 220, 220, 230 ℃. The pellets were sufficiently dried in an oven at 80° C. for 3 hours or more before input into the film extruder to remove the moisture influence, and then put into the inlet of the film extruder to uniformly produce a sheet with a thickness of 0.15T. The temperature of the used rear roller was set to 85° C. using water as a medium, and the configuration of the roller was a type in which only one side of the resin extruded through the T-die is in contact with the roll as shown in FIG. 3 below. Here, the RPM of the film extruder screw was fixed at 100 and the linear speed of the roll was adjusted so that the thickness of the sheet was 0.15T. Here, haze (Hz), total light transmittance (Tt), readability, sheet gloss, and surface roughness (Ra), etc. were measured with respect to the surface of the extruded sheet surface in contact with the first roll. For reference, when measuring with a surface that is not in contact with the first roll, a difference in surface roughness may occur.
[191]
Meanwhile, the prepared pellets were injected at a molding temperature of 220° C. to prepare a specimen for measuring physical properties, and impact strength, elongation, hardness, and injection gloss were measured using this.
[192]
[Test Example]
[193]
The properties of the sheets and specimens prepared in Examples 1 to 4 and Comparative Examples 1 to 4 were measured by the following method, and the results are shown in Table 1 below.
[194]
* Melt index (MI): The prepared pellets were measured by ASTM D1238 method under the condition of 220°C/10 kg (unit: g/10min).
[195]
* Izod impact strength (kg.cm/cm): Measured by ASTM 256 method.
[196]
* Elongation: Measured by ASTM D638 method.
[197]
* Hardness: measured by ASTM D785 method.
[198]
* Injection gloss (gloss, 3.175T): measured at 45° with a gloss meter VG7000.
[199]
* Sheet gloss (0.15T): was measured at 60° with a gloss meter VG7000.
[200]
* Readability (R): The brightness was measured in the painting board using the RGB values ​​of the photographed image, and with reference to FIG. It was calculated using Equation 3 below. where Rc is the area of ​​the measured brightness peak under the conditions of width of number stroke: 2mm, final light quantity: 14 lux, LED light source: 150 lm/W, light source and sheet distance: contact, and sheet thickness: 0.15T, and Ro is Theoretically, it is the area of ​​the brightness peak. The measured brightness has a value in the range of 0 to 240, a value of 0 means black, and a value of 240 means white. Referring to FIG. 1 showing a graph of brightness change according to location, when the theoretical peak area is 1, the normal peak area of ​​the sample with good display readability is 1.2, and the peak (red) of the sample with poor display readability is 1.5. The larger the theoretical peak area, the worse the display readability. In other words, if the light blur is severe, the readability of the display is not good.
[201]
[Equation 3]
[202]
R = Rc/Ro
[203]
* Total light transmittance (Tt) and haze (Hz): measured by ASTM D1003 method. Specifically, the total light transmittance and haze values ​​were measured at a temperature of 23° C. according to ASTM D1003 for a sheet specimen using a haze meter (model name: HM-150) of MURAKAMI.
[204]
[Table 1]
[205]
As shown in Table 1, the thermoplastic resin composition according to the present invention (see the bottom photo of Examples 1 to 4 and FIG. 2) according to the present invention relates to sheet gloss, haze (%) and total light transmittance (%) according to the present invention. Compared to Comparative Examples 1 to 4, which do not conform to the relational expression, mechanical properties such as impact strength and workability are maintained at the same or higher level, and the weather resistance is excellent, and in particular, it has a natural, soft and luxurious feeling due to its matte characteristics, and the display readability is poor. In addition, referring to FIG. 2 below, the conventional high-gloss air conditioner product (see the top photo) has a good display readability, but has an artificial plastic feel, and has a matte appearance so as not to have such an artificial plastic feel. It can be seen that the changed conventional air conditioner product (see the middle photo) has very poor display readability. On the other hand, it was confirmed that the matte air conditioner product according to the present invention (refer to the bottom photo) was matte, natural and luxurious, and the display readability was very excellent.
Claims
[Claim 1]
100 parts by weight of a base resin comprising an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer; and 0.5 to 10 parts by weight of a matting agent having a refractive index of 1.46 to 1.53, and satisfying Equations 1 and 2 below. [Equation 1] G ≤ 20 (where G is the sheet gloss of the size of 0.15T measured with a glossmeter at 60°) [Equation 2] Hz < Tt (here, Hz and Tt are each of the size of 0.15T The haze (%) and total light transmittance (%) of the sheet.)
[Claim 2]
The thermoplastic resin composition according to claim 1, wherein the thermoplastic resin composition has a readability (R) of 1 to 1.4 calculated by Equation 3 below. [Equation 1] R = Rc/Ro (where Rc is the number Rc is the width of the stroke: 2mm, the final light quantity: 14 lux, the LED light source: 150 lm/W, the distance between the light source and the sheet: contact, and the sheet Thickness: The area of ​​the brightness peak measured under 0.15T condition, and Ro is the area of ​​the theoretical brightness peak without light blur.)
[Claim 3]
According to claim 1, wherein the base resin is acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer 10 to 70% by weight, polymethacrylate-based resin 5 to 50% by weight, and methacrylate-aromatic vinyl compound- A thermoplastic resin composition comprising 10 to 50 wt% of a vinyl cyanide compound copolymer.
[Claim 4]
The thermoplastic resin composition according to claim 1, wherein the total light transmittance Tt is 80 to 95%, and the haze Hz is 1 to 90%.
[Claim 5]
The acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer according to claim 1, wherein i) an acrylate rubber having an average particle diameter of 0.05 to 0.15 μm is contained in an amount of 40 to 60% by weight and a graft ratio of 40% or more. -Aromatic vinyl compound-vinyl cyan compound graft copolymer, ii) acrylate rubber having an average particle diameter of 0.05 to 0.15 μm in an amount of 40 to 60 wt% and a graft rate of less than 40% - Aromatic vinyl compound-vinyl cyan compound graft copolymer, and iii) at least one selected from the group consisting of acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer containing 40 to 60 wt% of acrylate rubber having an average particle diameter of 0.33 to 0.5 μm. A thermoplastic resin composition comprising
[Claim 6]
The method according to claim 5, wherein the i) acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer is included in an amount of 30 to 60 wt%, based on 100 wt% of the total base resin, and wherein the ii) acrylate-aromatic compound is included in an amount of 30 to 60 wt%. The vinyl compound-vinyl cyan compound graft copolymer is included in 35 to 65 wt%, and iii) the acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer is included in 5 to 30 wt% Thermoplastic resin composition.
[Claim 7]
The thermoplastic resin composition according to claim 3, wherein the polymethacrylate-based resin comprises 65 to 80% by weight of methacrylate and 20 to 35% by weight of a vinyl cyanide compound.
[Claim 8]
The thermoplastic resin composition according to claim 3, wherein the polymethacrylate-based resin has a weight average molecular weight of 50,000 to 200,000 g/mol.
[Claim 9]
4. The polymethacrylate-based resin according to claim 3, wherein the polymethacrylate-based resin is a) a polymethacrylate-based resin having a weight average molecular weight of 30,000 to 90,000 g/mol, and b) a polymethacrylic resin having a weight average molecular weight of 100,000 to 200,000 g/mol. A rate-based resin, and c) a thermoplastic resin composition, characterized in that at least one selected from the group consisting of polymethacrylate-based resins having a weight average molecular weight of greater than 200,000 g/mol to 300,000 g/mol or less.
[Claim 10]
10. The method of claim 9, based on the total 100% by weight of the base resin, a) the polymethacrylate-based resin is included in 5 to 30% by weight, and b) the polymethacrylate-based resin is 5 to 30% by weight and c) the polymethacrylate-based resin is included in an amount of 10 to 50 wt%.
[Claim 11]
According to claim 3, wherein the methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer comprises 65 to 85% by weight of methacrylate, 10 to 30% by weight of an aromatic vinyl compound, and 5 to 10% by weight of a vinyl cyan compound A thermoplastic resin composition comprising:
[Claim 12]
The thermoplastic resin composition according to claim 3, wherein the methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer has a weight average molecular weight of 80,000 to 200,000 g/mol.
[Claim 13]
The thermoplastic resin composition according to claim 1, wherein the matting agent is a polyamide resin having a refractive index of 1.46 to 1.53.
[Claim 14]
A molded article comprising the thermoplastic resin composition of any one of claims 1 to 13.
[Claim 15]
The molded article according to claim 14, wherein the molded article is a film or sheet material for a hidden display.
[Claim 16]
The molded article according to claim 15, wherein the film or sheet has a thickness of 0.05 to 0.5T.