KR20120050138A - Non-paint black high glossy acryl resin composition with excellent weatherability and gloss property - Google Patents

Abstract

PURPOSE: A non-coated black high-glossy acrylic resin composition is provided to embody colorability and weatherability, and minimize black feeling degradation. CONSTITUTION: A non-coated black high-glossy acrylic resin composition comprises 35-55 parts by weight of small-size acrylate-based copolymers having average particle size of 500-2,000 angstrom, 30-50 parts by weight of large sized acrylate copolymer having average particle diameter of 2,500-5,000 angstrom, 5-15 parts by weight of crosslinked acrylic impact resistant modifier, 0.5-1.5 parts by weight of weather-resistant stabilizer consisting of phenol-based antioxidant and benzotriazole-based ultraviolet-absorbing agent, 1-3 parts by weight of silicon-based scratch resistance reinforcing agent, and 1-3 parts by weight of metal complex-based dye based on total weight of above materials.

Description

Non-painting black high-gloss acrylic resin composition excellent in weatherability and gloss properties {NON-PAINT BLACK HIGH GLOSSY ACRYL RESIN COMPOSITION WITH EXCELLENT WEATHERABILITY AND GLOSS PROPERTY}

The present invention relates to an unpainted black high-gloss acrylic resin composition for automobile exterior plastic parts, and more particularly, to a thermoplastic acrylic resin composition excellent in colorability, weather resistance and scratch resistance.

Acrylic or methacrylic resin is generally a resin produced by polymerizing acrylic acid and its derivatives, and has been widely used as an industrial material because of its excellent transparency and weather resistance, and especially in a wide range of parts such as automobile interior and exterior materials, home appliance housing, and building materials. Usage is increasing rapidly.

In the past, the application of matte materials was mainly required, but in recent years, the demand for high quality resins is increasing in order to create a more elegant atmosphere and higher quality as users' emotional quality requirements are increasing, especially in the case of automotive interior and exterior parts. Efforts are being made to improve the sense of quality and marketability by applying high gloss resins. In addition, in recent years, due to environmental problems, black high gloss coating or film insertion process is omitted, and there is a trend to manufacture unpainted black high gloss resin.

The colorability of the resin is very important in order to produce a black high gloss effect without the black high gloss coating or film insertion process as described above. In general, the acrylic resin is excellent in transparency and can produce a deep color tone, but the black color is less than the high gloss paint.

In addition, acrylic resins are excellent in weatherability and gloss characteristics, but low in impact resistance, and are often used as materials for garnishes and molded parts due to occurrence of surface fine scratches. Therefore, it is used for very limited purposes until now, but there is a need for technical research to find a way to solve such defects according to the cost reduction and the demand trend and marketability of eco-friendly materials.

Accordingly, the present inventors have repeatedly studied to solve the above problems, small diameter acrylate copolymer; Large diameter acrylate copolymers; Crosslinked acrylic impact modifiers; Weathering stabilizers comprising a phenolic antioxidant and a benzotriazole ultraviolet absorber; Silicon-based scratch resistance reinforcing agents; And when containing a certain amount of a metal complex salt dye it was found that the acrylic resin composition excellent in weather resistance, colorability and gloss properties can be prepared to complete the present invention. That is, the present invention is to provide an acrylic resin composition that can maintain uniform colorability and at the same time not only excellent weather resistance but also high gloss effect and can express uniform properties without high gloss coating.

In another aspect, the present invention is to provide a plastic molded article manufactured using the acrylic resin composition.

The present invention relates to a), b), c), d), e) and f) 35 to 55 parts by weight of a small diameter acrylate copolymer having an average particle diameter of 500 to 2,000 mm 3 with respect to 100 parts by weight of the total amount ; b) 30 to 50 parts by weight of the large diameter acrylate copolymer having an average particle diameter of 2,500 to 5,000 mm 3; c) 5 to 15 parts by weight of crosslinked acrylic impact modifier; d) 0.5 to 1.5 parts by weight of a weather stabilizer consisting of a phenolic antioxidant and a benzotriazole ultraviolet absorber; e) 1 to 3 parts by weight of a silicone-based scratch resistance reinforcing agent; And f) 1 to 3 parts by weight of a metal complex salt dye.

The present invention also relates to a plastic molded article produced from the acrylic resin composition.

The acrylic resin composition of the present invention can realize excellent colorability and gloss characteristics, and can act as a material for parts requiring weather resistance in automobile interior and exterior materials, home appliance housing, and building materials, and minimizes the blackness deterioration. Excellent scratch resistance. In addition, by implementing a gloss property within a range that does not lower the mechanical properties, it is possible to replace the high-gloss paint products to play a role as an eco-friendly material that can reduce cost and recycle. In particular, the plastic molded article of the present invention maintains mechanical properties, exhibits high gloss characteristics and is excellent in weatherability, and is suitable for use as a material for automobile interiors and exteriors.

The present invention relates to a), b), c), d), e) and f) 35 to 55 parts by weight of a small diameter acrylate copolymer having an average particle diameter of 500 to 2,000 mm 3 with respect to 100 parts by weight of the total amount ; b) 30 to 50 parts by weight of the large diameter acrylate copolymer having an average particle diameter of 2,500 to 5,000 mm 3; c) 5 to 15 parts by weight of crosslinked acrylic impact modifier; d) 0.5 to 1.5 parts by weight of a weather stabilizer consisting of a phenolic antioxidant and a benzotriazole ultraviolet absorber; e) 1 to 3 parts by weight of a silicone-based scratch resistance reinforcing agent; And f) 1 to 3 parts by weight of a metal complex salt dye, and a plastic molded article prepared from the acrylic resin composition.

In particular, the present invention improves the dispersibility of the composition by using an appropriate amount of small-diameter acrylate copolymer and large-diameter acrylate copolymer without using pigments and dyes to improve the colorability of the acrylic resin composition. It is characterized in that the secured. In addition, HALS (Hindered Amine Light Stabilizers), a phenolic antioxidant, and a benzotriazole-based UV absorber having a high effect in combination with the phenolic antioxidants can be used as materials for parts requiring weather resistance such as interior and exterior materials for automobiles, home appliances, and building materials. It is characterized by being able to express the weathering characteristics to the maximum by optimizing. In addition, by using an appropriate amount of silicone-based scratch-resistant reinforcing agent to minimize the black feeling degradation, maximize the surface scratch resistance, it is characterized in that it contains a metal complex salt-based dye in the optimum content range to optimize the black feeling .

Hereinafter, the present invention will be described in more detail.

Acrylic resin composition according to the present invention is an acrylic resin composition excellent in weather resistance, colorability and gloss characteristics, small diameter acrylate copolymer; Large diameter acrylate copolymers; Crosslinked acrylic impact modifiers; Weathering stabilizers comprising a phenolic antioxidant and a benzotriazole ultraviolet absorber; Silicon-based scratch resistance reinforcing agents; And it is characterized in that it comprises a certain amount of a metal complex salt dye, it may be used by adding a known additive used in the art in some cases.

The small diameter acrylate copolymer used in the present invention uses an average particle diameter of 500 to 2,000 mm 3, the content of a), b), c), d), e) and f) the total amount of components 100 It is preferable to use 35 to 55 parts by weight with respect to parts by weight. If the content is less than 35 parts by weight, a blooming phenomenon occurs on the surface of the dye, and if it exceeds 55 parts by weight, there is a problem in that the dye dispersibility is lowered to satisfy the black feeling required for application of the part. The small-diameter acrylate copolymer is generally used in the art, but is not particularly limited, but preferably, the small-diameter graft alkyl acrylate-styrene-acrylonitrile-based copolymer (ASA-1), alkyl-acrylic acid A copolymer, an alkyl-methacrylic acid copolymer, an alkyl-methacrylate, etc. can be used individually or in mixture.

The large-diameter acrylate copolymer used in the present invention uses an average particle diameter of 2,500 to 5,000 mm 3, the content of which is a), b), c), d), e) and f) the total amount of the component 100 weight It is preferable to use 30-50 weight part with respect to a part. If the content is less than 30 parts by weight, the material properties are less than the standard, and if the content exceeds 50 parts by weight, the dispersibility of the dye is lowered, which does not satisfy the black feeling required for application of the component. The large-diameter acrylate copolymer is generally used in the art, but is not particularly limited, but preferably, the large-diameter graft acrylate-styrene-acrylonitrile-based copolymer (ASA-2), alkyl-acrylic acid copolymer, Alkyl-methacrylic acid copolymer, alkyl-methacrylate, etc. can be used individually or in mixture.

The small diameter and large diameter acrylate copolymers may be prepared by emulsion polymerization using an emulsifier, an initiator, a grafting agent, a crosslinking agent, and an electrolyte as an additive to an alkyl acrylate monomer. For example, Korean Patent No. 509,868, etc. It can be prepared by referring to.

The present invention improves the dispersibility of the composition by using an appropriate amount of the small-diameter acrylate copolymer and the large-diameter acrylate copolymer together without using pigments and dyes to improve the colorability of the acrylic resin composition. The advantage is that the characteristics can be secured.

The crosslinked acrylic impact modifier used in the present invention is preferably used 5 to 15 parts by weight based on 100 parts by weight of the total amount of the components a), b), c), d), e) and f). When included in less than 5 parts by weight broken parts binding parts are difficult to apply parts, including more than 15 parts by weight has a high impact resistance, the black feeling is reduced when applying the parts, there is a disadvantage that the economy is low. The crosslinked acrylic impact modifier is generally used in the art, but is not particularly limited, but preferably, an alkyl acrylate-g-acrylate copolymer, a styrene copolymer, a methyl acrylate copolymer, or a butyl acrylate It is preferable to use a copolymer or the like singly or in combination, and more preferably n-butyl acrylate-g-polymethyl methacrylate, methyl methacrylate copolymer, acrylonitrile copolymer or the like alone or mixed. Can be used.

The weathering stabilizer consisting of the phenolic antioxidant and the benzotriazole ultraviolet absorber used in the present invention is 0.5 to 1.5% by weight based on 100 parts by weight of the total amount of the components a), b), c), d), e) and f). It is preferable to use a part. When less than 0.5 parts by weight causes discoloration of parts, and when more than 1.5 parts by weight there is a problem that causes a decrease in formability and cost increase due to gas generation.

The phenolic antioxidant and the benzotriazole-based ultraviolet absorber are used in a mixture of 0.25 to 0.75: 0.25 to 0.75 weight ratio, and preferably 0.3 to 0.6: 0.4 to 0.7 weight ratio. As described above, when optimizing the composition ratio of the phenolic antioxidant and the benzotriazole-based ultraviolet absorbent having a high combined effect therewith, there is an advantage that the weathering characteristics can be maximized.

The phenolic antioxidant is generally used in the art, but is not particularly limited, but preferably hindered amine light stabilizers (HALS), hindered piperidine light stabilizers or acrylates A light stabilizer or the like may be used alone or in combination, more preferably n-octadecyl-β- (4-hydroxy-3,5-di-t-butyl-phenyl) -propionate, N, N'- Hexamethylene bis (3,5-di-t-butyl-4-hydroxy-hydroxyanamide), pentaerythritol tetrabis (3- (3,5-di-tetra-butyl-4-hydroxypentyl Hydroxyphenyl) propionate), octadecyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate

And thiodiethylene bis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate] can be used.

The benzotriazole UV absorber is generally used in the art, but is not particularly limited, but preferably 2- (2H-benzotriazol-2-yl) -p-cresol, 2,4-di-t-butyl -6- (5-chlorobenzotriazol-2-yl) phenol, 2- (2'-hydroxy-5'-octylphenyl) -benzotriazole, 2- (2'-hydroxymethylphenyl) benzotriazole 2- [2'-hydroxy-3 ', 5'-bis (α, α-dimethylbenzylphenyl) benzotriazole,

2- (2'-hydroxy-3 ', 5'-dibutylphenyl) benzotriazole, 2- (2'-hydroxy-3'-tert-butyl-5'-methylphenyl) -5-chlorobenzotria Sol, 2- (2'-hydroxy-3 ', 5'-di-tert-amyl) benzotriazole, 2,2'-methylene bis [4- (1,1,3,3-tetramethylbutyl) -6- (2-N-benzotriazol-2-yl) phenol], 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-hexyloxyl-phenol and One kind or two or more kinds selected from 2- (2H-benzotriazol-2-yl) -4,6-bis (1-methyl-1-phenylethyl) phenol can be used.

It is preferable to use 1 to 3 parts by weight based on 100 parts by weight of the total amount of the a), b), c), d), e) and f) components of the silicone-based scratch resistance reinforcing agent used in the present invention. If it is less than 1 part by weight, the scratch occurrence rate increases when the part is applied, and when it exceeds 3 parts by weight, the blackness is lowered when the part is applied, and the cost is increased.

The silicone-based scratch resistant reinforcing agent is generally used in the art, but is not particularly limited. Preferably, an organic modified siloxane, a mixture of silicone-based and fatty acid, silicone-based and palmitate It is preferable to use a mixture of acid (Palmitic acid), siloxane-polyester copolymer, silicone-based copolymer or the like alone or mixed. The silicone scratch resistant reinforcing agent may be used in the form of a wax type, a powder type or a solid type (pellet).

The metal complex salt dye used in the present invention is preferably used 1 to 3 parts by weight based on 100 parts by weight of the total amount of the components a), b), c), d), e) and f). If it is less than 1 part by weight, the colorability is lowered when the component is applied, and if it is more than 3 parts by weight, there is a problem of causing a cost increase, so it is preferable to maintain the above range.

The metal complex dye-based dyes are generally used in the art, but are not particularly limited, but preferably are bisulphonated 1: 2 metal complex-based liquid dyes (the metal may be copper, nickel or cobalt). ), And more preferably azo metal complex salt, phthalocyanine metal complex salt, or the like.

The acrylic resin composition according to the present invention may further include additives used in the art, such as fillers, colorants, lubricants, stabilizers, heat-resistant agents, antioxidants, etc. in addition to the composition.

Mixing of the acrylic resin composition according to the present invention can be carried out using a known method, for example, a conventional kneading method using a twin screw extruder can be used.

In addition, the present invention can manufacture a plastic molded article using the acrylic resin composition, the plastic molded article produced through the present invention is not limited to the field used, but preferably has a gloss characteristic such as interior and exterior materials, building materials of automobiles It can be used in various parts as required. In particular, the plastic molded article maintains mechanical properties, exhibits high gloss characteristics, and has excellent weather resistance, which is suitable for use as a material for automobile interior and exterior materials.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited by the following Examples.

Manufacturing example  1: small diameter Acrylate series  Copolymer production

Butyl acrylate was firstly added to a 10 L reactor, 10 parts by weight of the reaction mixture, 1.5 parts by weight of di-ethylhexylsulfosuccinate sodium salt, 0.02 parts by weight of ethylene glycol dimethacrylate, sodium hydrogencarbonate (NaHCO ₃ ) 0.1 A weight part, 0.04 part by weight of potassium persulfate, and 70 parts by weight of water were collectively administered, and the reaction temperature was raised to 70 ° C., followed by reaction for 1 hour to prepare a polymer seed. Here again, a mixture of 30 parts by weight of butyl acrylate, 0.5 parts by weight of di2-ethylhexylsulfosuccinate sodium salt, 0.1 parts by weight of sodium bicarbonate, and 34 parts by weight of water and 0.06 parts by weight of potassium persulfate as an initiator were added. Each of the polymerization was continuously conducted at 70 ° C. for 3 hours to prepare a small diameter acrylate rubbery polymer having an average particle diameter of 800 to 1,000 mm 3.

Manufacturing example  2: large diameter Acrylate series  Copolymer production

5 parts by weight of butyl acrylate, 0.015 parts by weight of di2-ethylhexyl sulfo succinate sodium salt, 0.02 parts by weight of ethylene glycol dimethacrylate, 0.1 parts by weight of sodium hydrogencarbonate (NaHCO ₃ ), potassium persulfate 0.04 parts by weight and 70 parts by weight of water were collectively administered, and the reaction temperature was raised to 70 ° C., followed by reaction for 1 hour to prepare a polymer seed. Here again, a mixture of 45 parts by weight of butyl acrylate, 0.285 parts by weight of di2-ethylhexylsulfosuccinate sodium salt, 0.1 parts by weight of sodium bicarbonate, and 34 parts by weight of water and 0.06 parts by weight of potassium persulfate as an initiator Polymerization was carried out continuously at 70 ° C. for 3 hours to prepare a large diameter acrylate rubbery polymer having an average particle diameter of 3,000 to 4,000 mm 3.

Example  1: no painting Black high-glossy  Preparation of Acrylic Resin Composition

Examples 1 to 3 were prepared in the composition and content as shown in Table 1, specifically, a) 35 to 55 parts by weight of a small diameter acrylate-based copolymer having an average particle diameter of 500 to 2,000 mm 3 in the copolymer, b) 30 to 50 parts by weight of a large diameter acrylate-based copolymer having an average particle diameter of 2,500 to 5,000 kPa c) 5 to 15 parts by weight of crosslinked acrylic impact modifier, d) 0.5 to 1.5 weight of benzotriazole and external weather stabilizer Part, e) 1 to 3 parts by weight of the scratch resistance reinforcement of the silicone series, and f) 1 to 3 parts by weight of the metal complex salt-based dyes are characterized in that it comprises an optimal content range.

Example 1 is prepared by a) 45 parts by weight of a small diameter acrylate copolymer of Preparation Example 1, b) to 100 parts by weight of the total amount of the components a), b), c), d), e) and f) 40 parts by weight of the large-diameter acrylate copolymer of Example 2, c) 10 parts by weight of crosslinked acrylic impact modifier, d) 1 part by weight of benzotriazole-based and phenolic weather stabilizers, and 2) 2 parts by weight of silicone-based scratch resistance enhancer. and f) 2 parts by weight of a metal complex dye dye, 0.5 parts by weight of EBA (ethylene bis stearamide) and 0.5 parts by weight of antioxidant were mixed with a lubricant, and a twin screw extruder (L / D 44, screw diameter 30 mm at 260 ° C.). ) Was prepared in the form of pellets using the acrylic resin composition.

Example  2: no painting Black high-glossy  Preparation of Acrylic Resin Composition

To the composition and content as shown in Table 1, a) 35 parts by weight of a small diameter acrylate-based copolymer, b) 50 parts by weight of a large-diameter acrylate-based copolymer, except that acrylic based in the same manner as in Example 1 A resin composition was prepared.

Example  3: no painting Black high-glossy  Preparation of Acrylic Resin Composition

To the composition and content as shown in Table 1, c) acrylic resin composition was prepared in the same manner as in Example 1, except that 15 parts by weight of the cross-linked acrylic impact modifier.

Comparative example  One

To the composition and content as shown in Table 1, except that a) 20 parts by weight of a small diameter acrylate-based copolymer, b) 65 parts by weight of a large-diameter acrylate-based copolymer, acrylic based in the same manner as in Example 1 A resin composition was prepared.

Comparative example  2

To the composition and content as shown in Table 1, a) 65 parts by weight of a small diameter acrylate-based copolymer, b) 20 parts by weight of a large diameter acrylate-based copolymer, except that acrylic based in the same manner as in Example 1 A resin composition was prepared.

Comparative example  3

The composition and content as shown in Table 1, except that a) 50 parts by weight of small diameter acrylate copolymer, b) 45 parts by weight of large diameter acrylate copolymer, c) 0 parts by weight of crosslinked acrylic impact modifier Then, the acrylic resin composition was manufactured by the method similar to Example 1.

Comparative example  4

To the composition and content as shown in Table 1, a) 45.5 parts by weight of a small diameter acrylate copolymer, b) 40.5 parts by weight of a large diameter acrylate copolymer, d) 0 parts by weight of benzotriazole-based and phenolic weather stabilizer An acrylic resin composition was prepared in the same manner as in Example 1 except that it was used.

Comparative example  5

To the composition and content as shown in Table 1, using a) 46 parts by weight of a small diameter acrylate copolymer, b) 41 parts by weight of a large diameter acrylate copolymer, e) 0 parts by weight of a silicone-based scratch resistance enhancer Except that, an acrylic resin composition was prepared in the same manner as in Example 1.

Comparative example  6

The composition and content as shown in Table 1, except that a) 46 parts by weight of the small diameter acrylate copolymer, b) 41 parts by weight of the large diameter acrylate copolymer, f) 0 parts by weight of the metal complex salt dyes Manufactured acrylic resin composition in the same manner as in Example 1.

division practice
Example 1 practice
Example 2 practice
Example 3 compare
Example 1 compare
Example 2 compare
Example 3 compare
Example 4 compare
Example 5 compare
Example 6 Small Diameter Acrylate 45 35 45 20 65 50 45.5 46 46 Large Diameter Acrylate 40 50 40 65 20 45 40.5 41 41 Acrylic impact modifier 10 10 15 10 10 - 10 10 10 Weather stabilizer One One One One One One - One One Scratch Resistant 2 2 2 2 2 2 2 - 2 Metal Complex Dye 2 2 2 2 2 2 2 2 - Tensile Strength (MPa) 74 70 53 69 76 82 73 75 73 Impact Strength (-10 ℃, J / m) 17 16 20 16 16 13 16 17 17 Heat deformation temperature (캜) 87 87 79 89 86 89 87 87 86 Heat resistant cycle ^* OK OK OK NG NG NG OK OK OK

Weathering resistance Color difference (△ E: less than 3) 0.74 0.87 0.77 0.95 1.17 0.99 2.41 0.68 1.36 Gray Scale (Rating) 4-5 4-5 4-5 4-5 4-5 4-5 3-4 4-5 4-5 Glossiness retention rate (%) 99 98 95 97 95 96 85 94 77 Black (CIE L *) 1.34 1.23 2.06 1.52 1.65 1.44 2.42 1.81 2.75 * Acrylic impact modifier: cross-linked n-butyl acrylate-g-polymethyl methacrylate
* Weather stabilizer: 2- (2H-benzotriazol-2-yl) -p-cresol: n-Octadecyl-β- (4-hydroxy-3,5-di-tert-butyl-phenyl) -propionate = 1: 1
* Scratch Reinforcement: Siloxane-Polyester Copolymer
* Metal complex dyes: bisulphonated 1: 2 metal complex (Cu)

* Reliability evaluation of heat resistance, cold resistance and moisture resistance after fastening the garnish injection part with the inspection port

Experimental Example

After drying the acrylic resin composition obtained according to Examples 1 to 3 and Comparative Examples 1 to 6 for 3 hours or more at 80 ° C., injection was performed under conditions of a molding temperature of 250 to 260 ° C. and a mold temperature of 70 ° C., respectively. Was measured.

The tensile strength

Follow the method specified in ASTM D 638.

However, the test piece uses TYPE 1 and the test speed is 50 mm / min.

Impact strength

Follow the method specified in ASTM D 256.

However, the size of the specimen is 63.5 × 12.7 × 6.4 mm, NOTCH is used.

Heat deflection temperature HDT )

Follow the method specified in ASTM D 648.

However, the size of the test piece is 127 x 12.7 x 6.4 mm, and the stress load is 1.822 MPa.

Heat resistant CYCLE castle

(a) Heat resistance: The surface temperature of parts shall be 80 ° C (door frame garnish).

(b) Cold resistance: -40 ± 2 ° C.

(C) Moisture resistance: It is made into 50 +/- 2 degreeC and 90% RH or more.

Weathering resistance

WEATHER-O-METER (ISO 105, JIS L 0843, ASTM D 6695, SAE J 1960, SAE J 2527

Xenon arc specified) to be tested under SAE J 1960 conditions.

Color difference

Color difference is measured after accelerated weathering evaluation. (45 ° / 0 °, Spin-Sphere)

Gray  scale

After the accelerated weather resistance evaluation, the gray scale was measured by ASTM evaluation method D2616.

Gloss retention

After the accelerated weather resistance evaluation, it was measured at 60 degrees according to ASTM evaluation method D2457.

Black  ( CIE  L *)

According to the CIE standard colorimetry, the L * value was measured by the SCI method.

With respect to the plastic molded article specimens using the acrylic resin composition obtained according to Examples 1 to 3 and Comparative Examples 1 to 6, the measurement results of the physical properties measured by the same method are as shown in Table 1 above.

As shown in Table 1, the plastic molded article prepared from the acrylic resin composition of Examples 1 to 2 including the small diameter acrylate copolymer and the large diameter acrylate copolymer in an optimum range according to the present invention is the same amount. When the dye is used, it is remarkably well colored, and the characteristic which has the outstanding blackness can be confirmed. In the case of Example 3 in which the content of the impact reinforcing agent was increased, tensile strength, impact strength, heat deformation temperature, heat cycle resistance, and weather resistance were satisfied, but the blackness was slightly decreased.

On the other hand, the plastic molded products prepared from the acrylic resin compositions of Comparative Examples 1 and 2 satisfy tensile strength, impact strength, heat deformation temperature, and weather resistance, but the dispersion is unstable when kneading small- and large-diameter acrylate copolymers, thereby evaluating heat resistance. After completion, gap gap and thermal deformation occurred and it was confirmed that it could not be used. When the acrylic impact resistant reinforcing agent was not used as in Comparative Example 3, the impact strength was lowered, and it was confirmed that the heat resistance was not satisfied due to the heat cycle resistance. When the benzotriazole-based and phenol-based weather stabilizers were not used as in Comparative Example 4, all other characteristics could be satisfied, but the weather resistance was markedly lowered, and thus it was confirmed that they could not be used. When Comparative Examples 5 to 6 did not use a silicone-based scratch reinforcing agent and a metal complex dye-based dye, all other characteristics were satisfied, but it was confirmed that the black feeling was reduced.

Therefore, the plastic molded article manufactured through the composition of the present invention has excellent physical properties and can be used in various parts requiring gloss characteristics such as interior and exterior materials of automobiles and building materials.

Claims (8)

To 100 parts by weight of the total amount of the following components a), b), c), d), e) and f),
a) 35 to 55 parts by weight of a small diameter acrylate copolymer having an average particle diameter of 500 to 2,000 mm 3;
b) 30 to 50 parts by weight of the large diameter acrylate copolymer having an average particle diameter of 2,500 to 5,000 mm 3;
c) 5 to 15 parts by weight of crosslinked acrylic impact modifier;
d) 0.5 to 1.5 parts by weight of a weather stabilizer consisting of a phenolic antioxidant and a benzotriazole ultraviolet absorber;
e) 1 to 3 parts by weight of a silicone-based scratch resistance reinforcing agent; And
f) 1 to 3 parts by weight of a metal complex salt dye
Acrylic resin composition comprising a.
The method of claim 1, wherein the c) crosslinked acrylic impact modifier is one selected from the group consisting of alkyl acrylate-g-acrylate copolymer, styrene copolymer, methyl acrylate copolymer and butyl acrylate copolymer Or two or more acrylic resin compositions.
According to claim 1, wherein the d) phenolic antioxidant is one or more selected from the group consisting of hindered amine light stabilizer (HALS), hindered piperidine-based light stabilizer or acrylate-based light stabilizer Resin composition.
The method of claim 1, wherein the d) benzotriazole ultraviolet absorber is 2- (2H-benzotriazol-2-yl) -p-cresol, 2,4-di-t-butyl-6- (5-chlorobenzo Triazol-2-yl) phenol, 2- (2'-hydroxy-5'-octylphenyl) -benzotriazole, 2- (2'-hydroxymethylphenyl) benzotriazole, 2- [2'-hydroxy Oxy-3 ', 5'-bis (α, α-dimethylbenzylphenyl) benzotriazole,
2- (2'-hydroxy-3 ', 5'-dibutylphenyl) benzotriazole, 2- (2'-hydroxy-3'-tert-butyl-5'-methylphenyl) -5-chlorobenzotria Sol, 2- (2'-hydroxy-3 ', 5'-di-tert-amyl) benzotriazole, 2,2'-methylene bis [4- (1,1,3,3-tetramethylbutyl) -6- (2-N-benzotriazol-2-yl) phenol], 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-hexyloxyl-phenol and Acrylic resin composition, characterized in that one or two or more selected from the group consisting of 2- (2H-benzotriazol-2-yl) -4,6-bis (1-methyl-1-phenylethyl) phenol.
The acrylic resin composition according to claim 1, wherein the phenolic antioxidant and the benzotriazole ultraviolet absorber are used in a weight ratio of 0.25 to 0.75: 0.25 to 0.75.
The method of claim 1, wherein the e) the silicone scratch resistant adjuvant is an organic modified siloxane (organomodified siloxane), a mixture of silicone-based and fatty acid (Fatty acid), a mixture of silicone-based and palmitic acid (siloxane), siloxane- Acrylic resin composition, characterized in that one or two or more selected from the group consisting of a polyester copolymer and a silicone-based copolymer.
The metal complex salt dye of claim 1, wherein the metal complex salt dye is an unsulfonated 1: 2 metal complex liquid dye (the metal is copper, nickel or cobalt), an azo metal complex salt or a phthalocyanine metal complex salt. Acrylic resin composition
Plastic molded article manufactured from the acrylic resin composition according to any one of claims 1 to 7.