KR20230157550A - Matting compound composition - Google Patents

Abstract

The present invention relates to a matting compound composition, and more specifically, to a matting compound composition containing polymethyl methacrylate (PMMA), cross-linked PMMA beads, and an impact modifier. Molded articles manufactured by extrusion or injection processing thereof have a matting effect and resistance. It is characterized by excellent impact resistance.

Description

Matting compound composition {MATTING COMPOUND COMPOSITION}

The present invention relates to a matting compound composition, and more specifically, to a matting compound composition containing polymethyl methacrylate (PMMA), cross-linked PMMA beads, and an impact modifier. Molded articles manufactured by extrusion or injection processing thereof have a matting effect and resistance. It is characterized by excellent impact resistance.

A matte sheet is distinguished from a glossy sheet as a sheet manufactured to function matte by covering one or two outer layers with a matte composition. Matte sheets can prevent eye fatigue and disclosure of packaged contents seen in glossy sheets, and can give the product elegance. In addition, as consumers' emotional quality level has recently increased, the demand for matte sheets is increasing to provide a high-quality texture to the material. Therefore, it has recently been used directly or laminated on food packaging, book covers, shopping bags, etc. The usage is also gradually increasing, and its market share compared to glossy sheets is already over 50% in advanced countries such as Japan.

Meanwhile, PMMA (Poly Methyl MethAcrylate) is used by copolymerizing MMA with MA (MethylAcrylate) or EA (EthylAcrylate). It has the highest permeability (93%) among transparent resins, excellent weather resistance and surface hardness, and is characterized by a beautiful appearance. .

PMMA sheets are used as lenticular light guide plates for LED TVs and LED lighting, as well as for general industrial purposes such as advertising boards and interior boards, and recently, they are also used as partitions to prevent the spread of coronavirus.

In particular, overseas, matte sheets are used for partitions. The matte phenomenon is caused by diffuse reflection caused by irregularities on the reflective surface. Methods for imparting matte characteristics to the surface include: 1) coating and etching the surface of a general film; A method of surface treatment, 2) a method of utilizing differences in flowability, shrinkage, and refractive index between mixed resins, which are characteristics of incompatible resin mixtures, 3) a method of giving irregularities to the surface using inorganic substances, and 4) cooling. There is an embossing method that gives unevenness to the roll.

In general, method 1) is not widely used because it requires separate post-processing equipment such as coating and drying equipment, and methods 2) to 4) or a mixture of these methods are used commercially.

In order to make the surface of the sheet matte, it is necessary to create irregularities (emboss) on the surface of the sheet. To create emboss on the surface of the sheet, there are two methods: processing the surface of the polishing roll and transferring it during sheet extrusion, and coextruding matting compound into the surface layer. . Meanwhile, the matting compound used in the method of co-extruding the matting compound into the surface layer is mostly dependent on imports of overseas products, so local production is necessary.

In this regard, Republic of Korea Patent No. 10-2382945 discloses a matting polymer composition containing two types of styrene-acrylonitrile copolymers with different acrylonitrile contents and a matting agent, and a matte sheet containing the same. .

The purpose of the present invention is to solve the problems of the prior art described above, and to provide a matting compound composition that can contribute to local production by replacing the matting compound that relies on imports.

Additionally, the present invention aims to provide a matting compound composition with excellent matting effect and impact resistance.

As a technical means for achieving the above-described technical problem, one aspect of the present invention is,

First polymethyl methacrylate (PMMA) having a melt index (MI) of 10 to 15 g/10min; Cross-linked PMMA beads; And an impact modifier; a matting compound composition containing a is provided.

The content of the first PMMA may be 15 to 85% by weight based on the total weight of the matting compound composition.

The content of the crosslinked PMMA beads may be 5 to 30% by weight based on the total weight of the matting compound composition.

The content of the impact modifier may be 5 to 30% by weight based on the total weight of the matting compound composition.

The crosslinked PMMA beads may have a diameter of 3 to 100 μm.

The impact modifier may include an acrylic compound.

The matting compound composition may further include a second PMMA having a melt index (MI) of 1.5 to 2 g/10min.

The content of the second PMMA may be 20 to 70% by weight based on the total weight of the matting compound composition.

Another aspect of the present invention is,

A molded article manufactured by extruding or injection of the matting compound composition is provided.

The matting compound composition of the present invention has the effect of contributing to local production by replacing the matting compound that relies on imports.

In addition, the matting compound composition of the present invention has excellent matting effect and impact resistance.

Figure 1 is a photograph of a surface (skin) layer containing cross-linked PMMA beads with a diameter of 60㎛.
Figure 2 is a photograph of a surface (skin) layer containing cross-linked PMMA beads with a diameter of 80㎛.
Figure 3 is a photograph of a surface (skin) layer containing cross-linked PMMA beads with a diameter of 100㎛.

Hereinafter, the present invention will be described in more detail. However, the present invention can be implemented in various different forms, and the present invention is not limited to the embodiments described herein, and the present invention is only defined by the claims to be described later.

In addition, the terms used in the present invention are only used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In the entire specification of the present invention, 'including' a certain element means that other elements may be further included rather than excluding other elements, unless specifically stated to the contrary.

The first aspect of this application is,

First PMMA; Cross-linked PMMA beads; It provides a matting compound composition containing; and an impact modifier.

Hereinafter, the matting compound composition according to the first aspect of the present application will be described.

According to an embodiment of the present application, the matting compound composition may include first polymethyl methacrylate (PMMA).

According to an embodiment of the present application, the first PMMA may be PMMA for injection molding.

According to one embodiment of the present application, the first PMMA may have a melt index (MI) of 10 to 15 g/10min, preferably 12 to 14 g/10min, more preferably 14 g/10min. It may be 10min.

According to an embodiment of the present application, the first PMMA may have a heat distortion temperature of 85 to 90°C, preferably 87 to 89°C, and more preferably 88°C.

According to one embodiment of the present application, the content of the first PMMA may be 15 to 85% by weight based on the total weight of the matting compound composition.

According to an embodiment of the present application, the matting compound composition may include crosslinked PMMA beads.

The crosslinked PMMA beads may have the effect of maximizing the matting effect, and may be added to impart matte properties to the surface layer when applying the matting compound composition to the surface (skin) layer of the sheet.

According to one embodiment of the present application, the crosslinked PMMA beads may have a diameter of 3 to 100 μm. If the diameter of the cross-linked PMMA beads is less than 3㎛, there is a risk that the effect of improving matting properties will be minimal, and agglomeration between particles may occur, which may lead to problems with impeded permeability and increased haze, which is not desirable. If it exceeds 100㎛, extrusion During the process, surface imbalance may occur due to particle protrusion on the surface, and there is a risk of deterioration of mechanical properties such as optical properties and impact strength, which is undesirable.

According to one embodiment of the present application, the content of the crosslinked PMMA beads may be 5 to 30% by weight based on the total weight of the matting compound composition.

According to one embodiment of the present application, the matting compound composition may include an impact modifier.

By including the impact modifier, impact resistance, mechanical stability, etc. may be improved.

According to one embodiment of the present application, the content of the impact modifier may be 5 to 30% by weight based on the total weight of the matting compound composition.

According to one embodiment of the present application, the impact modifier may include an acrylic compound.

When the acrylic compound is used as an impact modifier, it has excellent weather resistance. If the acrylic compound has a specially designed structure to have the same refractive index as PMMA, the high transparency, which is an advantage of existing PMMA, can be maintained. As the impact modifier content increases, the impact strength of impact-resistant PMMA increases. Considering other physical properties such as fluidity, heat resistance, and surface hardness, the content can be adjusted to suit the characteristics of the final applied product.

According to one embodiment of the present application, the matting compound composition may further include second PMMA.

According to an embodiment of the present application, the second PMMA may be PMMA for extrusion.

According to an embodiment of the present application, the second PMMA may have a melt index (MI) of 1.5 to 2 g/10min, preferably 1.5 to 1.7 g/10min, and more preferably 1.6 g/10min. You can.

According to one embodiment of the present application, the second PMMA may have a heat distortion temperature of 95 to 100°C, preferably 97 to 99°C, and more preferably 98°C.

According to one embodiment of the present application, the content of the second PMMA may be 20 to 70% by weight based on the total weight of the matting compound composition.

According to an embodiment of the present application, the matting compound composition may further include additives commonly used in the art, depending on the purpose and use. For example, it may further include antioxidants, UV stabilizers, heat stabilizers, lubricants, etc. At this time, the additives may be included in an appropriate amount within a range that does not harm the physical properties of the matting compound composition.

The second aspect of this institution is,

Provided is a molded article manufactured by extruding or injecting the matting compound composition according to the first aspect of the present application.

Hereinafter, the molded article according to the second aspect of the present application will be described.

According to one embodiment of the present application, the molded product has excellent impact strength, and at the same time, the surface of the molded product has uniform roughness, resulting in excellent matteness. The processing method of the molded product can be used without major limitations as long as it is a commonly used or known method. For example, methods such as casting, extrusion, injection, and blow molding can be used, and extrusion or injection processing methods are preferably used. You can.

The third aspect of this institution is,

A matte sheet comprising the matting compound composition according to the first aspect of the present application is provided.

Hereinafter, the matte sheet according to the third aspect of the present application will be described.

According to one embodiment of the present application, the matte sheet includes a base layer; and a surface (Skin) layer.

According to an embodiment of the present application, the surface layer may be formed on one or both sides of the base layer.

According to one embodiment of the present application, the surface layer may include a matting compound composition. Since the matting compound composition is the same as the description of the matting compound composition of the present invention described above, specific details will be referred to therein.

According to an embodiment of the present application, the base layer is polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyacrylate, polyethylene terephthalate (PET), and polybutyl. Rene terephthalate (PBT), polycarbonate (PC), polyamide, styrene-acrylonitrile copolymer (SAN), acrylonitrile-butadiene-styrene (ABS), acrylonitrile-styrene-acryl It may contain one or more types selected from the group consisting of ASA and mixtures thereof, and preferably contains polymethyl methacrylate (PMMA).

According to one embodiment of the present application, the matte sheet may be laminated by co-extruding the base layer and the surface layer.

According to one embodiment of the present application, the co-extrusion method may be to manufacture a sheet by melting and laminating each component using a co-extruder maintained at a temperature higher than the melting temperature of the base layer polymer composition and the surface layer polymer composition. The surface layer polymer composition may include the matting compound composition according to the first aspect of the present application.

According to one embodiment of the present application, the matte sheet may have a thickness of 2 to 10 mm.

According to an embodiment of the present application, co-extrusion refers to a method of creating a multi-layer structure by adding one or more layers when manufacturing a sheet using two or more extruders, for example, two extruders. A method of joining the base layer and surface layer (skin layer) extruded from the above T-die extruder in a roll may be applied. That is, a main extruder that extrudes the base layer and a sub-extruder that extrudes the surface layer can be used. The temperature conditions of the extruder may be within a typical range, specifically 200 to 300°C, more specifically, 220 to 260°C. However, the extrusion temperature is appropriately changed depending on the type of resin for extrusion.

The lamination method using these compositions may be a known method, but specifically, a feed block method may be used. The molten resin laminated with the feed block is introduced into a sheet forming die such as a T die, formed into a sheet shape, and then the surface is finished with a forming roll and cooled. At this time, the temperature of the die may be 200 to 300°C, specifically 230 to 250°C, and the forming roll temperature may be 40 to 150°C, specifically 60 to 110°C, but is not limited thereto.

In addition, through the above coextrusion process, a multilayer sheet in a flat form can be manufactured, and molded products with a curved design in a special profile form can be manufactured, but the base layer polymer composition and the above-mentioned matting polymer composition If a product can be manufactured by melt processing, there are no significant restrictions on the extrusion method or the shape of the molded product.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement it. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein.

Example: Preparation of Matting Compound Composition

Examples 1 to 4

First PMMA (IF850 from LX MMA) with a melt index (MI) of 13 g/10min, second PMMA (VH6 from Lotte MCC) with a melt index of 1.6 g/10min, cross-linked PMMA beads with a diameter of 20㎛ The matting compound compositions of Examples 1 to 4 were prepared using (MH-20FD from ASP) and an impact modifier (PR700 from LX MMA) according to the compositions in Table 1 below. At this time, the content is wt%.

IF850 VH6 20㎛ PMMA
(MH-20FD) PR700 Example 1
(F8-FD-R10) 74.8 - 15 10 Example 2
(F8-FD-R15) 69.8 - 15 15 Example 3
(F8-FD-R20) 64.8 - 15 20 Example 4
(F8VH-FD-R15) 34.8 35 15 15

Example 5

First PMMA (IF850 from LX MMA) with a melt index (MI) of 13 g/10min, second PMMA (VH6 from Lotte MCC) with a melt index of 1.6 g/10min, cross-linked PMMA beads with a diameter of 30㎛ The matting compound composition of Example 5 was prepared according to the composition in Table 2 below using (MH-30FD from ASP) and an impact modifier (PR700 from LX MMA). At this time, the content is wt%.

IF850 VH6 30㎛ PMMA
(MH-30FD) PR700 Example 5
(PRMH30-15) 34.8 35 15 15

Examples 6 to 8

First PMMA (IF850 from LX MMA) with a melt index (MI) of 13 g/10min, second PMMA (VH6 from Lotte MCC) with a melt index of 1.6 g/10min, crosslinked PMMA beads with a diameter of 40㎛ Matting compound compositions of Examples 6 to 8 were prepared according to the compositions in Table 3 below using (MH-40FD from ASP) and an impact modifier (PR700 from LX MMA). At this time, the content is wt%.

IF850 VH6 40㎛ PMMA
(MH-40FD) PR700 Example 6
(PRMH40-15) 34.8 35 15 15 Example 7
(PRMH40-18) 36.8 30 18 15 Example 8
(PRMH40-22) 38.8 24 22 15

Examples 9 to 12

First PMMA (IF850 from LX MMA) with a melt index (MI) of 13 g/10min, second PMMA (VH6 from Lotte MCC) with a melt index of 1.6 g/10min, crosslinked PMMA beads with a diameter of 60㎛ Matting compound compositions of Examples 9 to 12 were prepared according to the compositions in Table 4 below using (MH-60FD from ASP) and an impact modifier (PR700 from LX MMA). At this time, the content is wt%.

PRMH60-25
(IF850 (34.8%) + VH6 (25%) + 60㎛ PMMA (25%) + PR700 (15%)) IF850 Example 9
(PM60-18) 72.0 28.0 Example 10
(PM60-20) 80.0 20.0 Example 11
(PM60-23) 92.0 8.0 Example 12
(PM60-25) 100.0 0.0

Examples 13 to 16

First PMMA (IF850 from LX MMA) with a melt index (MI) of 13 g/10min, second PMMA (VH6 from Lotte MCC) with a melt index of 1.6 g/10min, crosslinked PMMA beads with a diameter of 80㎛ Matting compound compositions of Examples 13 to 16 were prepared according to the compositions in Table 5 below using (MH-80FD from ASP) and an impact modifier (PR700 from LX MMA). At this time, the content is wt%.

PRMH80-25
(IF850 (34.8%) + VH6 (25%) + 80㎛ PMMA (25%) + PR700 (15%)) IF850 Example 13
(PM80-18) 72.0 28.0 Example 14
(PM80-20) 80.0 20.0 Example 15
(PM80-23) 92.0 8.0 Example 16
(PM80-25) 100.0 0.0

Examples 17 to 20

First PMMA (IF850 from LX MMA) with a melt index (MI) of 13 g/10min, second PMMA (VH6 from Lotte MCC) with a melt index of 1.6 g/10min, crosslinked PMMA beads with a diameter of 100㎛ Matting compound compositions of Examples 17 to 20 were prepared according to the compositions in Table 6 below using (MH-100FD from ASP) and an impact modifier (PR700 from LX MMA). At this time, the content is wt%.

PRMH100-25
(IF850 (34.8%) + VH6 (25%) + 100㎛ PMMA (25%) + PR700 (15%)) IF850 Example 17
(PM100-18) 72.0 28.0 Example 18
(PM100-20) 80.0 20.0 Example 19
(PM100-23) 92.0 8.0 Example 20
(PM100-25) 100.0 0.0

Comparative Example 1

ARKEMA's matting compound (Product name: SUPERMATT, Grade name: HIF 10) was purchased and used as Comparative Example 1.

Comparative Example 2

Matting compound (XM533 NP) from LX MMA was purchased and used in Comparative Example 2.

Comparative Examples 3 and 4 (impact modifier X)

First PMMA (IF850 from LX MMA) with a melt index (MI) of 13 g/10min, second PMMA (VH6 from Lotte MCC) with a melt index of 1.6 g/10min, cross-linked PMMA beads with a diameter of 20㎛ (MH-20FD from ASP) was used to prepare the matting compound compositions of Comparative Examples 3 and 4 without an impact modifier according to the composition in Table 7 below. At this time, the content is wt%.

IF850 VH6 20㎛ PMMA
(MH-20FD) Comparative Example 3
(F8-FD) 84.8 - 15 Comparative Example 4
(F8VH-FD) 15 69.8 15

Experiment example

A sheet with a three-layer structure laminated with a surface (Skin) layer/substrate layer/surface (Skin) layer was manufactured using the matting compound composition prepared according to Examples 1 to 20 and Comparative Examples 1 to 4, and the sheet was Glossiness, arithmetic mean roughness (Ra), haze (HAZE), etc. were measured.

Specifically, Lotte's VH001 (MI: 1.64 g/10min) was used as the main raw material of the surface layer, and the matting compound composition prepared according to Examples 1 to 20 and Comparative Examples 1 to 4 was used as the sub raw material. did. Polymethyl methacrylate (PMMA) was used as the base layer. The materials used for the surface layer and the base layer were melted, co-extruded, and extruded between the first roll and the second roll through a T-shaped die. The sheet that passed through the first and second rolls passed between the second and third rolls and was cooled with air through a guide roll to produce a sheet.

(1) The glossiness of the sheet was measured according to the ASTM D523 standard.

(2) The arithmetic average roughness (Ra) of the sheet was measured using a KS B 0501 stylus surface roughness meter.

(3) The haze of the sheet was measured with a haze meter according to ASTM D1003.

(4) The thickness of the sheet was measured using a measuring instrument such as a micrometer according to KS B 5202 (micrometer).

The measurement results of sheets manufactured using the matting compound compositions prepared according to Examples 1 to 4 and Comparative Examples 1 to 4 are shown in Table 8 below.

extruder temperature
(℃) Whether or not there is a line Skin layer thickness
(㎛)
Left / Center / Right Glossiness
(60 degrees) Ra HAZE sheet thickness
(mm) Comparative Example 1
(ARKEMA's HIF10
(MI 1.16)) 260 X 220 / 134 / 202 16.7 1.7 58.90 3.0 250 X 204 / 133 / 214 22.3 1.4 47.84 240 X 190 / 109 / 204 16.4 1.8 59.60 230 X 250 / 113 / 190 21.5 1.4 48.89 220 O 160 / 95 / 174 53.6 1.2 29.76 Comparative Example 2
(XM533 NP (MI 1.64) from LX MMA) 260 X 227 / 161 / 191 9.8 3.3 81.99 3.0 250 X 200 / 155 / 196 10 3.6 82.18 240 X 197 / 160 / 198 10.2 3.6 81.08 230 X 226 / 122 / 179 10.3 3.5 80.65 220 X 154 / 130 / 160 10.5 3.2 78.64 Example 4
(F8VH-FD-R15
(MI 1.53)) 260 X 205 / 118 / 208 15.7 1.95 61.92 3.0 250 X 209 / 161 / 203 17.8 1.6 57.36 240 X 196 / 144 / 192 16 2.05 61.08 230 X 170 / 116 / 165 17.6 1.77 57.83 Example 3
(F8-FD-R20
(MI 3.65)) 260 X 228 / 169 / 197 18.6 1.55 56.94 3.0 250 X 216 / 170 / 204 18.1 1.65 56.49 240 X 200 / 149 / 196 18.6 1.58 56.49 230 X 122 / 150 / 187 20 1.51 53.97 Example 2
(F8-FD-R15
(MI 4.13)) 260 Lines only on the side 203 / 149 / 201 17.4 1.69 59.38 3.0 250 202 / 152 / 200 18.2 1.5 58.18 240 202 / 155 / 186 20.1 1.49 53.53 230 O 185 / 148 / 186 19.9 1.71 53.31 Example 1
(F8-FD-R10
(MI 5.15)) 240 X 195 / 147 / 204 19.4 1.62 53.97 3.0 230 X 209 / 141 / 189 20.7 1.45 51.5 Comparative Example 3
(F8-FD
(MI 7.87)) 240 O 169 (medium) 26 1.21 42.46 3.0 230 O 165 (medium) 28.3 1.29 38.58 220 O 142 (medium) 24.9 1.27 44.71 Comparative Example 4
(F8VH-FD
(MI 1.38)) 260 X 207 / 138 / 222 21.8 1.6 49.9 3.0 250 O 134 (medium) 26.6 1.4 43.52 240 O 137(medium) 22.8 1.39 48.89

Referring to Table 8, it was confirmed that ARKEMA's matting compound (HIF10) of Comparative Example 1 had lines when extruded at a low extrusion temperature of about 220°C. It was confirmed that LX MMA's In addition, it was confirmed that the HAZE was around 80% and the glossiness was around 10 GU.

In addition, it was confirmed that the melt index (MI) could be adjusted through the content of the base resins IF850 and VH6 by manufacturing a sheet using the matting compound composition prepared according to Examples 1 to 4. On the other hand, in Comparative Examples 3 and 4, in which no impact resistant agent (PR700) was added, it was confirmed that lines were formed during extrusion, and thus it was confirmed that it was difficult to produce good products.

The measurement results of sheets manufactured using the matting compound compositions prepared according to Examples 5 to 8 and Comparative Example 2 are shown in Table 9 below. At this time, the arithmetic average roughness (Ra) of the second and third rolls used to manufacture the sheet was 12 μm, and the 10-point average roughness (Rz) was 52 μm.

Sub RPM Skin layer thickness
(㎛)
Left / Center / Right Glossiness
(60 degrees) Glossiness
(85 degrees) Ra HAZE sheet thickness
(mm) Comparative Example 2
(XM533 NP (MI 1.64) from LX MMA) 40 395 / 275 / 470 4.2 2.4 3.6 87.77 5.4 Example 5
(PRMH30-15
(MI 1.6)) 30 299 / 198 / 378 11.9 6.9 3.05 70.93 5.8 Example 6
(PRMH40-15
(MI 1.51)) 30 338 / 235 / 334 11.8 7.6 2.9 71.00 5.8 20 189 / 131 / 197 9.2 4.9 3.8 77.11 Example 7
(PRMH40-18
(MI 1.59)) 15 189 4.6 2.5 4.1 82.89 5.9 Example 8
(PRMH40-22
(MI 1.50)) 15 136 4.4 2.4 4.3 86.54 5.8

Referring to Table 9, it was confirmed that in Examples 6 to 8 using cross-linked PMMA beads with a diameter of 40㎛, as the content of cross-linked PMMA beads increased, the gloss decreased and the HAZE increased. It was confirmed that Example 8, which used 22% cross-linked PMMA beads with a diameter of 40㎛, was most similar to the data of Comparative Example 2, that is, XM533 NP from LX MMA.

In addition, as a result of evaluating the thickness of the skin layer by adjusting only the sub RPM of Example 6 using 15% of cross-linked PMMA beads with a diameter of 40㎛, it was found that the sample with a thin skin layer had a high Ra and low gloss. I was able to confirm. This appears to be because the skin layer thickness is thin compared to the bead size and the bead protrudes to the outside.

The measurement results of sheets manufactured using the matting compound compositions prepared according to Examples 9 to 20 are shown in Table 10 below. At this time, the roll used to manufacture the sheet was a polishing roll. In addition, a photograph of the surface layer of the crosslinked PMMA beads with a diameter of 60 μm is shown in FIG. 1, a photograph of a surface layer of 80 μm is shown in FIG. 2, and a photograph of a surface layer of 100 μm is shown in FIG. 3.

Sub RPM Skin layer thickness
(㎛) Glossiness
(60 degrees) Glossiness
(85 degrees) Ra HAZE sheet thickness
(mm) Example 9
(PM60-18) 15 160 4.8 2.2 4.7 85.92 5.8~5.9 Example 10
(PM60-20) 170 4.7 2.3 5.5 87.48 Example 11
(PM60-23) 140 3.8 1.5 6.5 90.70 Example 12
(PM60-25) 160 3.8 1.7 6.9 90.92 Example 13
(PM80-18) 15 150 6.4 2.7 5.6 85.68 5.8~5.9 Example 14
(PM80-20) 200 4.9 2 6.5 87.84 Example 15
(PM80-23) 200 4.9 2 6 87.31 Example 16
(PM80-25) 250 4.9 2.1 6.2 87.33 Example 17
(PM100-18) 15 170 6 2.6 6.9 83.69 5.8~5.9 Example 18
(PM100-20) 180 5.5 2.3 6.6 87.37 Example 19
(PM100-23) 200 4.1 1.6 - 88.80 Example 20
(PM100-25) 230 4.2 1.5 9.3 90.80

Referring to Table 10 and Figures 1 to 3, it can be seen that the Ra value increases as the diameter of the cross-linked PMMA beads increases, and as the content of the cross-linked PMMA beads increases, the gloss decreases and the HAZE value increases. I was able to.

Referring to Tables 8 to 10, a matting compound composition can be manufactured by adjusting the contents of the first PMMA, the second PMMA, the cross-linked PMMA beads, and the impact modifier to suit the user's desired gloss, Ra, HAZE, etc.

Above, the present invention has been described in detail along with preferred embodiments with reference to the drawings, but the scope of the technical idea of the present invention is not limited to these drawings and examples. Accordingly, various modifications or equivalent embodiments may exist within the scope of the technical idea of the present invention. Therefore, the scope of rights of the technical idea according to the present invention should be interpreted in accordance with the claims, and technical ideas within the scope equivalent or equivalent thereto should be interpreted as falling within the scope of the rights of the present invention.

Claims (9)

First polymethyl methacrylate (PMMA) having a melt index (MI) of 10 to 15 g/10min;
Cross-linked PMMA beads; and
A matting compound composition containing an impact modifier. According to paragraph 1,
The content of the first PMMA is a matting compound composition, characterized in that 15 to 85% by weight based on the total weight of the matting compound composition. According to paragraph 1,
A matting compound composition, characterized in that the content of the crosslinked PMMA beads is 5 to 30% by weight based on the total weight of the matting compound composition. According to paragraph 1,
The content of the impact modifier is a matting compound composition, characterized in that 5 to 30% by weight based on the total weight of the matting compound composition. According to paragraph 1,
A matting compound composition, characterized in that the crosslinked PMMA beads have a diameter of 3 to 100㎛. According to paragraph 1,
A matting compound composition, wherein the impact modifier includes an acrylic compound. According to paragraph 1,
The matting compound composition further comprises a second PMMA having a melt index (MI) of 1.5 to 2 g/10min. In clause 7,
The content of the second PMMA is a matting compound composition, characterized in that 20 to 70% by weight based on the total weight of the matting compound composition. A molded article manufactured by extruding or injecting the matting compound composition according to claim 1.