KR20190079384A - Polycarbonate-abs alloy resin composition with reduced gloss and light resistance and molded article comprising the same - Google Patents

Abstract

The present invention relates to a polycarbonate-ABS-based alloy resin composition excellent in low gloss and light resistance, and a molded article comprising the same. More specifically, according to the present invention, by comprising a polycarbonate resin, a basic resin composed of two or more kinds of vinyl cyanide compound-conjugated diene compound-aromatic vinyl compound copolymers having a different average particle diameter, a UV stabilizer, and a colorant in a predetermined optimized range, provided are: the polycarbonate-ABS-based alloy resin composition which has excellent mechanical properties and impact resistance, has excellent low gloss and light resistance, and also can significantly reduce odor when used as automotive interior materials; and the molded article comprising the same.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polycarbonate-ABS-based alloy resin composition having a low gloss and a high light resistance, and a molded article including the polycarbonate-

The present invention relates to a polycarbonate-ABS-based alloy resin composition excellent in low gloss and light resistance and a molded article comprising the same.

Polycarbonate (PC) is a blend of polycarbonate (PC) and acrylonitrile-butadiene-styrene (ABS) Both the heat resistance and the impact strength of the acrylonitrile-butadiene-styrene (hereinafter abbreviated as ABS) and the processability and the chemical resistance of the acrylonitrile-butadiene-styrene (ABS) are excellent and have excellent processing characteristics and mechanical properties.

In addition, it exhibits excellent physical properties compared to ABS and can be used for various purposes because it can reduce the cost compared to the PC. In particular, the halogen-free NH (non halogen) -PC / ABS resin does not cause environmental pollution and has a low human hazard, and thus can be used in various electronic products and automobile parts such as TV housings, monitor housings, Notebook batteries, door handles, bumpers, and instrument panels.

PC / ABS alloy resins used in electrical and electronic products and automotive parts are exposed to light sources such as ultraviolet rays, so they must have lightfastness or weatherability to prevent aging of plastic due to ultraviolet rays.

In addition, these component materials require a high heat-resistant temperature that can withstand high temperatures without being deformed in order to withstand the hot sunlight in summer, require low-temperature impact strength to prevent the strength from being lowered at cryogenic temperatures in winter, And a high tensile strength is required to withstand the straining stress applied during use.

However, physical properties such as low temperature impact strength, tensile strength, fluidity, heat resistance and light resistance tends to form an inverse relationship with each other.

In addition, consumers are increasingly increasing their preference for low gloss in plastic rather than high gloss. The preference for low gloss is increasing with recent trends of high quality of home appliances and automobile interior materials. In particular, in the case of automobile interior materials, low gloss is strongly required because the gloss may adversely affect the driving of the driver. In order to realize such characteristics, a surface coating process is required after injection molding. That is, the surface of the molding is roughened to scatter light in order to lower the surface gloss of the plastic. As a method for lowering the surface gloss without a post-coating step, there is a method of modifying the butadiene rubber among the thermoplastic resins or adding a talc-based additive or the like. However, such a method has a problem that the surface gloss can not be lowered below the required level, mechanical properties such as impact strength are lowered, and the plastic is aged and discolored because it is directly exposed to a light source without a coating film.

On the other hand, a method of adding a quencher such as a polystyrene acrylonitrile-styrene copolymer having a high molecular weight may be used as a method of realizing a low gloss in a resin. However, the cost of the thermoplastic resin due to the addition of an expensive quencher may be increased, And there is a problem that the degree of the smell of the interior material is lowered.

Therefore, it is necessary to develop a resin having a low gloss without deteriorating the degree of odor, which is excellent in impact strength, tensile strength, fluidity, heat resistance and light resistance, which are in inverse proportion to each other.

The present invention is to provide a polycarbonate-ABS series resin composition having low gloss and excellent light resistance and a molded article comprising the same.

According to an embodiment of the present invention,

(a) 50 to 80% by weight of a polycarbonate resin having a melt index of 2 g / 10 min or more to 25 g / 10 min or less,

(b1) a vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer having an average particle diameter of not less than 6.5 μm and not more than 12 μm and (b2) a vinyl cyan compound-conjugated diene compound having an average particle diameter of not less than 2 μm and less than 6.5 μm 20 to 50% by weight of a vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer obtained by mixing a compound copolymer at a weight ratio of 3: 1 to 1:10,

 (c) 0 to 5% by weight of an acrylic compound-aromatic vinyl compound-vinyl cyanide copolymer,

(d) 0 to 10% by weight of an aromatic vinyl compound-vinyl cyanide copolymer, and

(e) 0 to 5% by weight of an impact modifier;

(f) 0.2 to 2.0 parts by weight of a UV stabilizer; And

(g) 0.3 to 1.0 part by weight of a colorant;

/ RTI >

A polycarbonate-ABS based alloy resin composition is provided.

Further, according to another embodiment of the present invention,

(a) 50 to 80% by weight of a polycarbonate resin having a melt index of not less than 2 g / 10 min and not more than 25 g / 10 min, (b1) a vinyl cyan compound-conjugated diene compound having an average particle diameter of not less than 6.5 탆 and not more than 12 탆, And (b2) a vinyl cyan compound-conjugated diene compound-aromatic compound in which a vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer having an average particle diameter of 2 μm or more and less than 6.5 μm is mixed at a weight ratio of 3: 1 to 1:10 (C) 0 to 5% by weight of an acrylic compound-aromatic vinyl compound-vinyl cyanide copolymer, (d) 0 to 10% by weight of an aromatic vinyl compound-vinyl cyanide copolymer, and (e) 0 to 5% by weight of an impact modifier; (f) 0.2 to 2.0 parts by weight of a UV stabilizer; And (g) 0.3 to 1.0 part by weight of a colorant.

There is provided a process for producing the polycarbonate-ABS series resin composition as described above.

According to still another embodiment of the present invention, there is provided a molded article produced by including the polycarbonate-ABS series resin composition described above.

Hereinafter, the present invention will be described in more detail. The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Also, " comprising "as used herein should be interpreted as specifying the presence of particular features, integers, steps, operations, elements and / or components, It does not exclude the presence or addition of an ingredient.

In the specification of the present invention, a specific numerical range is a range including the numerical value in the absence of a separate specification.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred polycarbonate-ABS series resin compositions having excellent low-gloss and light resistance, a method of manufacturing the same, and a molded article including the polycarbonate-ABS series resin composition will be described in detail.

The polycarbonate-ABS-based alloy resin composition of the present invention comprises a base resin composed of a polycarbonate resin and two or more kinds of vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer having different average particle diameters, a UV stabilizer and a colorant , And is characterized by containing each component in an optimized and predetermined range. In addition to being excellent in mechanical properties and impact resistance as well as being excellent in low gloss and light resistance, it is possible to improve the unpleasant odor caused by a quencher or the like It has excellent effect.

The components constituting the polycarbonate-ABS series resin composition having low gloss and excellent light resistance according to the present invention will be described in detail as follows.

First, the polycarbonate-ABS series resin composition is prepared by mixing (a) a polycarbonate resin, (b) a vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer, (c) an acrylic compound-aromatic vinyl compound- (D) an aromatic vinyl compound-vinyl cyanide copolymer, and (e) an impact modifier.

(a) Polycarbonate resin

The polycarbonate resin (a) is not particularly limited, and may be, for example, a resin polymerized by including a bisphenol-based monomer and a carbonate precursor.

Examples of the bisphenol-based monomer include bis (4-hydroxyphenyl) methane, bis (4-hydroxyphenyl) ether, bis (4-hydroxyphenyl) sulfone, bis Bis (4-hydroxyphenyl) sulfone, bis (4-hydroxyphenyl) ketone, 1,1- ), 2,2-bis (4-hydroxyphenyl) butane, 1,1-bis (4-hydroxyphenyl) cyclohexane (bisphenol Z; BPZ) Propane, 2,2-bis (4-hydroxy-3-bromophenyl) propane, Bis (4-hydroxy-3-chlorophenyl) propane, 2,2-bis (4-hydroxy- ) Propane, 1,1-bis (4-hydroxyphenyl) -1-phenylethane, bis (4-hydroxyphenyl) diphenylmethane, and?,? ] Polydimethylsiloxane And an acid.

The carbonate precursor may be at least one selected from the group consisting of dimethyl carbonate, diethyl carbonate, dibutyl carbonate, dicyclohexyl carbonate, diphenyl carbonate, ditolyl carbonate, bis (chlorophenyl) carbonate, m-cresyl carbonate, dinaphthyl carbonate, bis Diphenyl carbonate), carbonyl chloride (phosgene), triphosgene, diphosgene, carbonyl bromide, and bishaloformate.

The polycarbonate resin (a) may be, for example, about 50 to 80 wt% or less, about 53 to 75 wt% or less, or about 55 to 73 wt% or less, and has excellent heat resistance and impact strength within this range . Particularly, when the polycarbonate resin (a) is less than about 50% by weight, heat resistance and impact resistance of the material may be deteriorated. When the polycarbonate resin is more than about 80% by weight, the moldability of the material may deteriorate, have.

The polycarbonate resin (a) has a melt index (300, 1.2 kgf) measured according to ASTM D 1238 of not less than about 2 g / 10 min to about 25 g / 10 min, not less than about 3 g / g / 10 min or less, or about 3 g / 10 min or more to about 15 g / 10 min or less. Within this range, excellent workability, excellent heat resistance and impact resistance, and excellent balance of physical properties are obtained.

The polycarbonate resin (a) has a weight average molecular weight of about 35,000 g / mol or more to about 85,000 g / mol or less, about 40,000 g / mol to about 80,000 g / mol, or about 42,000 g / mol to about It can be at most 75,000 g / mol, the impact strength is excellent within this range, and the flowability is good, so that excellent workability can be obtained.

In a more preferred embodiment, the polycarbonate resin (a) may be a mixture of two or more kinds of polycarbonate resins having different melt index ranges. For example, the polycarbonate resin (a) may have a melt index of from about 2 g / 10 min to about 9 g / 10 min, from about 3 g / 10 min to about 6 g / 10 min, 10 min or more to about 5 g / 10 min or less, and (a2) a polycarbonate resin having a melt index of about 9 g / 10 min or more to about 25 g / 10 min or less, 10 g / 10 min or more to about 15 g / 10 min or less. When such different polycarbonate resins are mixed with each other, the low temperature impact strength is excellent and a high melt index can be obtained.

The polycarbonate resin (a1) has a weight average molecular weight of about 56,000 g / mol or more to about 85,000 g / mol or less, about 57,000 g / mol to about 80,000 g / mol, or about 60,000 g / (A2) polycarbonate resin may have a weight average molecular weight of greater than about 35,000 g / mol to less than about 56,000 g / mol, greater than about 40,000 g / mol to less than about 53,000 g / mol, , Or from about 42,000 g / mol or more to about 50,000 g / mol or less.

The polycarbonate resin of (a1) and the polycarbonate resin of (a2) may be mixed and used in a weight ratio of about 7: 0 to 0: 7, about 3: 1 to 1: 5, or about 1: Within this range, there is an effect of excellent low-temperature impact strength and excellent balance of physical properties.

(b) a vinyl cyan compound- Conjugated diene  Compound-aromatic vinyl compound copolymer

(B1) a vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer having an average particle diameter of not less than about 6.5 μm and not more than about 12 μm, and (b2) a vinyl cyan compound-conjugated diene compound- Characterized in that a vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer having an average particle diameter of from about 2 탆 or more to less than about 6.5 탆 is mixed.

The copolymer of (b1) may for example have an average particle size of from about 6.5 탆 or more to about 12 탆 or less, about 6.8 탆 or more to about 11 탆 or less, or about 7 탆 or more to about 10 탆 or less. When the average particle diameter of the copolymer (b1) is less than about 6.5 탆, there is a problem that glossiness is increased. When the average particle diameter is more than about 12 탆, the impact strength is seriously deteriorated.

The copolymer (b1) comprises about 5 to 18% by weight of a conjugated diene compound, about 50 to 90% by weight of an aromatic vinyl compound and about 10 to 30% by weight of a vinyl cyanide compound; Or about 7 to 12% by weight of a conjugated diene compound, about 60 to 80% by weight of an aromatic vinyl compound and about 15 to 25% by weight of a vinyl cyanide compound; , And in this case, excellent moldability and mechanical properties are obtained.

The copolymer of (b2) may have an average particle size of about 2 占 퐉 or more to less than about 6.5 占 퐉, about 2.5 占 퐉 or more to about 6.0 占 퐉 or less, or about 3 占 퐉 or more to about 5 占 퐉 or less. When the average particle diameter of the copolymer (b2) is less than about 2 탆, the gloss may greatly increase. When the average particle diameter of the copolymer (b2) is larger than about 6.5 탆, There may be a problem that the strength is significantly lowered.

The (b2) copolymer contains about 8 to 30% by weight of a conjugated diene compound, about 40 to 80% by weight of an aromatic vinyl compound and about 10 to 30% by weight of a vinyl cyan compound; Or about 12 to 22 wt% of a conjugated diene compound, about 50 to 70 wt% of an aromatic vinyl compound, and about 15 to 25 wt% of a vinyl cyanide compound; And in this case, there is a characteristic of excellent mechanical properties, particularly low-temperature impact strength.

The copolymer of (b1) and the copolymer of (b2) should be mixed at a weight ratio of about 3: 1 to 1:10, about 2: 1 to 1: 4, or about 1: 1 to 1: 3 . When the blend weight ratio of the (b1) and (b2) copolymers is less than 5:50, there is a problem in that glossiness increases. When the blend weight ratio is more than 20:20, low-temperature impact resistance is low.

The total amount of the copolymer of (b1) and (b2) may be, for example, about 20 to 50% by weight, about 30 to 40% by weight, or about 35 to 40% by weight. When the total amount of the copolymer of (b1) and (b2) is less than about 20% by weight, there is a problem that the moldability and low-temperature impact resistance are lowered and the gloss is increased. When it exceeds 50% by weight, .

The conjugated diene compound may be, for example, a conjugated diene rubber.

(c) Acrylic compound-aromatic vinyl compound-vinyl cyan compound copolymer

The (c) copolymer may be, for example, about 0 to 10% by weight, about 1 to 5% by weight, or about 1 to 3% by weight, and the impact strength and light fastness are excellent within this range.

The copolymer (c) may include, for example, about 50 to 70% by weight of an acrylic compound, about 20 to 40% by weight of an aromatic vinyl compound, and about 5 to 20% by weight of a vinyl cyan compound, This has an excellent effect.

For example, the acrylic compound may have an average particle size of about 0.5 to 5 占 퐉, about 1 to 4 占 퐉, or about 3 to 4 占 퐉, and the impact strength is excellent within this range.

The acrylic compound of the (c) copolymer may be, for example, a polymer of an alkyl (meth) acrylate having an alkyl group of 1 to 15 carbon atoms.

The alkyl (meth) acrylate may be at least one selected from the group consisting of ethyl acrylate, ethyl methacrylate, methyl acrylate, methyl methacrylate, butyl acrylate, and butyl methacrylate.

The acrylic compound may be, for example, acrylic rubber.

(d) an aromatic vinyl compound-vinyl cyanide copolymer

The copolymer (d) may be, for example, about 0 to 10% by weight, about 1 to 5% by weight, or about 1 to 3% by weight. Within this range, the copolymer can have a moldability, a tensile strength, a flexural strength and a flexural modulus The mechanical properties are excellent.

The copolymer (d) may, for example, be polymerized with 60 to 85% by weight of an aromatic vinyl compound and 15 to 40% by weight of a vinyl cyan compound, and within this range, a balance of mechanical properties and physical properties is excellent.

(e) Impact modifier

The impact modifier (e) may be, for example, about 0 to 10% by weight, about 1 to 5% by weight, or about 1 to 3% by weight, .

The (g) impact modifier may be, for example, a silicone-acrylic copolymer having a core-shell structure. Specific examples thereof include 60 to 90% by weight of a silicone rubber core and an alkyl (meth) acrylate monomer formed on the core From 10% to 40% by weight of the shell.

The alkyl (meth) acrylate monomer may be at least one selected from the group consisting of ethyl acrylate, ethyl methacrylate, methyl acrylate, methyl methacrylate, butyl acrylate, and butyl methacrylate.

On the other hand, the polycarbonate-ABS series resin composition of the present invention comprises the polycarbonate resin (a), the vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer (b), the acrylic compound- (F) a UV stabilizer, and (g) a colorant, to the base resin composed of a vinyl cyan compound copolymer, an aromatic vinyl compound-vinyl cyan compound copolymer, and (e) an impact modifier.

(f) UV stabilizer

As the UV stabilizer (f), a compound capable of imparting ultraviolet shielding effect to the resin through ultraviolet ray absorption may be used so that the resin composition can realize excellent light resistance. For example, the (f) UV stabilizer may be about 0.2 to 2.0 parts by weight, about 0.25 to 1.5 parts by weight, or about 0.3 to 1.2 parts by weight based on 100 parts by weight of the base resin, It is effective. Particularly, when the content of the (f) UV stabilizer is less than about 0.2 parts by weight, the light resistance is poor. When the amount is more than about 2.0 parts by weight, the mechanical properties may be deteriorated.

The UV stabilizer (f) may be, for example, a benzotriazole ultraviolet absorber or a benzotriazole ultraviolet absorber and 2- (4,6-diphenyl-1,3,5-triazin- 2- (4,6-diphenyl) -1,3,5-triazin-2-yl) -5 - ((hexyl)) oxy) -phenol.

Examples of the benzotriazole ultraviolet absorber include 2- (2H-benzotriazol-2-yl) -4,6-bis (1-methyl- (2'-Hydroxy-5'-methylphenyl) benzotriazole), 2- (2'-hydroxy-5'-methylphenyl) benzotriazole, (2'-Hydroxy-3'-tert.butyl-5'-methylphenyl) -5-methyl- -5-chloro-benzotriazole, 2- (2'-hydroxy-3 ', 5'-ditbutylphenyl) -5- hydroxy-3,5-di-tert-butylphenyl) -5-chloro-benzotriazole, 2- (2'- di-tert.amylphenyl) benzotriazole, 2- (2'-hydroxy-3 ', 5'-di (1,1-dimethylbenzyl) phenyl) -2H-benzotriazole 3 ', 5'-di (1,1-imethylbenzyl) phenyl] -2H-benzotriazole), 2- (2'hydroxy- - (2'hydroxy-3 ', 5'-di-t-butylphenyl) benzotriazole, 2-benzotriazoleyl-2-hydroxy-5-tert-octylphenyl) methylene bis [(3- (2-benzotriazolyl) -2-hydroxy- ) And 2- (2'-hydroxy-5'-t-octylphenyl) benzotriazole). , And preferably 2- (2H-benzotriazol-2-yl) -4,6-bis (1-methyl-1-phenylethyl).

(g) Colorant

The colorant (g) is not particularly limited, and a colorant known as a black coloring material in the plastics industry can be generally used. In particular, the black coloring agent containing a carbon component can prevent sunlight from the surface of the plastic resin to prevent the plastic from coming into contact with ultraviolet rays, thereby improving the light resistance.

The colorant (g) may be at least one selected from the group consisting of carbon black, carbon nanotubes, carbon fibers, and the like. However, carbon black, which is a carbon (soot) compound obtained from an incompletely combusted hydrocarbon in terms of economy such as reduction of production cost, is more preferable.

The colorant (g) may be, for example, about 0.2 to 2 parts by weight, about 0.2 to 1.0 part by weight, or about 0.4 to 0.8 part by weight based on 100 parts by weight of the base resin. If the content of the coloring agent (g) is less than about 0.2 parts by weight, the light resistance may deteriorate. If the amount is more than about 2.0 parts by weight, mechanical properties such as impact strength may be deteriorated.

The colorant (g) may be a colorant compound such as carbon black, carbon nanotube or carbon fiber alone, or an aromatic vinyl compound-vinyl cyanide copolymer such as SAN, polyethylene (PE), polycarbonate (PC) ester) -based compound and the like.

The colorant (g) may have an average particle size of about 15 to 30 nm, and is characterized in that the dispersibility in the resin is within the above range and the specific surface area is sufficiently wide so that the resin composition has excellent light resistance.

In the present invention, the conjugated diene compound includes, for example, 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, 2-ethyl-1,3-butadiene, 1,3-pentadiene and isoprene And the like.

In the present invention, the aromatic vinyl compound may be at least one selected from the group consisting of styrene,? -Methylstyrene, o-ethylstyrene, p-ethylstyrene and vinyltoluene.

In the present invention, the vinyl cyan compound may be at least one selected from the group consisting of acrylonitrile, methacrylonitrile, and ethacrylonitrile.

The polycarbonate-ABS series resin composition is selected from the group consisting of an antibacterial agent, an antioxidant, a releasing agent, a surfactant, a coupling agent, a plasticizer, an admixture, a colorant, an antistatic agent, a coloring agent, a flame retardant agent, And may further include one or more species.

For example, the polycarbonate-ABS series resin composition is a gloss meter. The molded article molded from a general mold has a gloss of about 60 or less, or about 20 to 60, and about 59 or less Or about 20 to about 59, or about 58 or less, or about 20 to about 58.

The polycarbonate-ABS-based alloy resin composition may have a gray scale value of about 4 or more, or about 4 to 5, preferably about 5, as measured according to PV 1303 for example.

The polycarbonate-ABS-based alloy resin composition may have a light resistance (E) value measured according to PV 1303 of about 1.0 or less, or about 0.01 to 1.0, preferably about 0.5 or 0.01 to 0.5, for example.

The polycarbonate-ABS series resin composition may have a Charpy strength of about 45 KJ / m ² or more, or 45 KJ / m ² , preferably about 48 KJ / m ² , measured at about 23 ° C according to ISO 179 ² or 48-60 KJ / m ² , more preferably about 50 KJ / m ² or 50-60 KJ / m ² .

The polycarbonate-ABS series resin composition may have a Charpy strength of about 20 KJ / m ² or more, or 20 KJ / m ² to 40 KJ / m ² , preferably about 25 KJ / m ² , measured at about -30 ° C according to ISO 179, m ² or 25 to 40 KJ / m ² , more preferably about 30 KJ / m ² or more or 30 to 40 KJ / m ² .

The polycarbonate-ABS series resin composition may have an odor rating of about 3.0 or less, or about 1.0 to 3.0, or about 2.5 or less, or about 1.0 to 2.5 days, measured at about 78 캜 to 82 캜 according to VDA 270 B3 have.

For example, the polycarbonate-ABS series resin composition may have a VICAT softening point temperature measured according to ISO 306 of about 110 ° C or higher, or about 110 to 130 ° C, or about 115 ° C or higher, or about 110 to 130 ° C.

Further, the present invention provides a method for producing a polycarbonate-ABS-based alloy resin composition excellent in low-gloss and light resistance as described above.

(A) 50 to 80% by weight of a polycarbonate resin having a melt index of not less than 2 g / 10 min and not more than 25 g / 10 min, (b1) a polycarbonate resin having an average particle diameter of 6.5 탆 (B2) a vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer having an average particle diameter of 2 mu m or more and less than 6.5 mu m at a ratio of 3: 1 to (C) 0 to 5% by weight of an acrylic compound-aromatic vinyl compound-vinyl cyan compound copolymer, (d) 20 to 50% by weight of a vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer, 0 to 10% by weight of an aromatic vinyl compound-vinyl cyanide copolymer, and (e) 0 to 5% by weight of an impact modifier; (f) 0.2 to 2.0 parts by weight of a UV stabilizer; And (g) 0.3 to 1.0 part by weight of a colorant; and melt extruding the mixture.

The melt kneading may be carried out at about 220 to 290 ° C, or about 240 to 270 ° C, for example.

Further, the present invention provides a molded article comprising the polycarbonate-ABS-based alloy resin composition excellent in low-gloss and light resistance as described above.

The molded article may be, for example, an automobile interior material.

In the present invention, by including the base resin composed of two or more kinds of vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer having different average particle diameters from the polycarbonate resin, the UV stabilizer and the colorant in a predetermined range, It is excellent in impact resistance, low in gloss and light fastness, and can significantly improve odor as compared with conventional materials, thus being effectively used as an automobile interior material.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. However, this is provided as an example of the invention, and the scope of the invention is not limited thereto in any sense.

Example  1 to 7 and Comparative Example  1 to 7

The PC-ABS alloy resin composition having the composition ratios shown in the following Table 1 was added to the respective components in the respective amounts, mixed and extruded under a condition of about 250 캜 using a twin-screw extruder to prepare pellets, After drying at about 80 ° C for about 4 hours in a dehumidifying dryer, injection molding was performed using a mold for sample preparation.

Acrylonitrile-butadiene-styrene, an acrylonitrile-butadiene-styrene copolymer (ASA), an aromatic vinyl compound-vinyl cyanide copolymer (SAN), an acrylate- The total amount of the dimethylsiloxane copolymer was added so as to be 100% by weight, and the amount of the remaining components was expressed in a ratio of 100 parts by weight to the total amount of the base resin component.

Example Comparative Example One 2 3 4 5 6 7 One 2 3 4 5 6 7 (a1) PC-1
(weight%) 25 25 25 25 25 25 0 25 25 25 25 25 25 25 (a2) PC-2
(weight%) 35 35 35 35 32 35 60 35 35 35 35 35 35 35 (b1) ABS-1
(weight%) 10 10 10 10 10 20 10 10 10 - - - 40 10 (b2) ABS-2
(weight%) 30 30 27 27 30 20 30 30 30 40 - - - - (b3) ABS-3
(weight%) - - - - - - - - - - 40 34 - 30 (c) ASA
(weight%) - - 3 - - - - - - - - - - - (d) SAN
(weight%) - - - - 3 - - - - - - - - - (e) Shock
Reinforcing agent (% by weight) - - - 3 - - - - - - - - - - (h) (% By weight) - - - - - - - - - - - 6 - - (f) UV stabilizer (parts by weight) 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0 0.3 0.3 0.3 0.3 0.3 (g) Carbon black (parts by weight) 0.4 0.8 0.4 0.4 0.4 0.4 0.4 0 0.4 0.4 0.4 0.4 0.4 0.4

The compounds used in the above Examples and Comparative Examples are as follows.

(a1) PC-1: Polycarbonate (LG Chem) having a melt index of about 3 g / 10 min (ASTM D1238, 300 DEG C, 1.2 kgf) and a weight average molecular weight of about 70,000 g /

(a2) PC-2: Polycarbonate (LG Chem) having a melt index of about 15 g / 10 min (ASTM D1238, 300 캜, 1.2 kgf) and a weight average molecular weight of about 45,000 g /

(b1) ABS-1: acrylonitrile-butadiene-styrene copolymer (LG ABS MA210, LG Chem) having a BD content of 9% and an average particle size of 7 to 10 탆,

(b2) ABS-2: an acrylonitrile-butadiene-styrene copolymer having a BD content of 18% and an average particle size of 3 to 4 탆 (LG ABS MA221, LG Chem)

(b3) ABS-3: an acrylonitrile-butadiene-styrene copolymer having a BD content of 11% and an average particle size of 1 占 퐉 (LG ABS MA201, LG Chem)

(c) ASA: acrylonitrile-styrene-acrylate copolymer (LG ASA927, LG Chem)

(d) SAN: aromatic vinyl compound-vinyl cyanide copolymer (LG 81HF, LG Chem)

(e) Impact reinforcement: acrylate and dimethylsiloxane copolymer (MITSUBISHI RAYON, S-2001)

(f) UV stabilizer (UV234, BASF)

(g) Colorant (KCB, HI-Black 970)

(h) quenching agent (AM-10, Hannanotech)

< Test Example >

The properties of the polycarbonate-ABS series resin compositions prepared in the above Examples and Comparative Examples were measured by the following methods, and the results are shown in Table 2 below.

The melt index (g / 10 min )

It was measured according to ISO 1133 after standing at 260 캜 for 5 minutes under a load of 5 kg.

The tensile strength( MPa )

A test speed of 50 mm / min was measured at 23 ° C in accordance with ISO 527 (sample thickness 4 mm).

Flexural Strength ( MPa )

According to ISO 178, a test speed of 2 mm / min was measured at 23 DEG C (sample thickness: 4 mm).

Flexural modulus ( MPa )

Point-bending at 23 占 폚 according to ISO 178 (sample thickness 4 mm).

Charpy  Strength (KJ / m ² )

Measured at 23 [deg.] C and -30 [deg.] C on a V-notched sample of 80 x 10 x 4 mm &lt; ³ &gt;

Glossiness

It is measured by a gloss meter with a general pattern with no emboss at 60 °. The smaller the gloss value, the better the surface gloss.

Light resistance  The index (ΔE)

The light resistance index (DELTA E) was measured based on PV 1303 relating to high temperature light exposure test. The light resistance index (ΔE) is the ΔE measurement result for the color deviation of the pre- and post-test specimens tested under the following conditions based on the PV 1303 related to the high-temperature light exposure test, which is not ΔE value before and after the normal retention. This test method applies equally to the Gray scale below.

1. Weathering equipment: CI 3000 (ATLAS)

a. Black standard temperature: 100 ± 3 ℃

b. Specimen room temperature: 65 ± 3 ℃

c. Relative Humidity: 20 ± 10 ℃

d. Radiation strength (at 420 nm): 1.2 W / m ²

e. Filtering system: Borosilicate / Soda lime

f. Number of exposure periods: 5 periods

2. Color-eye 7000A (X-rite)

a. SCI mode

b. D65 / 10 °

The light resistance index (E) is a value determined according to the CIE Lab model financed by CIE (Commission Internationale d'Eclairage). Particularly, the light resistance index (E) can be obtained by measuring the color deviation of the specimen before and after performing the high-temperature light exposure test under the above-described conditions, and calculating the deviation according to the following equation (1) Do.

[Equation 1]

In the above equation 1,

L-L 'represents the L ^* scale difference before and after the light resistance test, wherein L ^* is a brightness element range of 0 to 100;

a-a 'represents the a ^* scale difference before and after the light resistance test, wherein a ^* is in the range of red-green axis +127 to -128;

b-b 'represents the b ^* scale difference before and after the light resistance test, wherein b ^* is the blue-sulfur axis range +127 to -128.

Gray scale

The gray scale was measured according to PV 1303 and the weatherability was evaluated based on the gray scale for evaluating change in color. The larger the value, the better the weather resistance.

Odor rating

Approximately 20 ± 2 cm ³ of specimen is placed in a 1 L glass container and stored at about 80 ± 2 ° C for about 2h ± 10 min according to VDA 270 B3, Odor Rating Method of the German Automobile Industry Association (www.vda.de) The lid of the specimen was opened and the smell was evaluated. At this time, the odor class is defined as 1-6 class as below and measured in 0.5 class unit. The scale for each grade is defined as follows.

Evaluation Scale

1.0: not perceptible

2.0: perceptible, not disturbing

3.0: Clearly perceptible, but not disturbing

4.0: disturbing

5.0: strongly disturbing

6.0: Not acceptable

VICAT  Softening point temperature (캜)

And the temperature was raised to 5 kgf and 50 DEG C / hr in accordance with ISO 306 to evaluate the heat resistance.

Example Comparative Example One 2 3 4 5 6 7 One 2 3 4 5 6 7 Melt Index
(g / 10 min) 17 16 19 14 24 19 23 17 17 15 16 12 21 21 The tensile strength
(MPa) 52 52 50 49 53 53 52 52 52 51 51 55 56 55 Flexural strength
(MPa) 80 80 77 77 82 82 80 80 80 78 78 83 87 86 Flexural modulus (MPa) 2250 2250 2200 2150 2350 2350 2250 2250 2250 2200 2200 2400 2500 2450 Charpy strength
(23 ° C, KJ / m ² ) 54 53 51 57 50 54 53 54 54 56 55 49 46 48 Charpy strength
(-30 ° C, KJ / m ² ) 31 30 30 34 24 24 20 31 31 34 33 19 18 19 Vicat temperature
(° C) 120.4 120.7 120.2 120.2 117.4 120.6 120.6 120.6 120.5 120 120 122.3 120.7 120.3 Glossiness 55 53 57 56 53 40 55 55 55 65 88 55 28 71 Light resistance
(ΔE) 0.3 0.15 0.2 0.15 0.20 0.26 0.3 4.3 8.1 0.55 0.54 0.29 0.28 0.25 Greyscale 4 - 5 5 5 5 4 - 5 4 - 5 4 - 5 2 1 - 2 4 4 4 - 5 5 5 Odor rating 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 3 3 3.5 2.5 3.0

From the results of Table 2, Examples 1 to 7 show that the polycarbonate resin of (a) to (g), the specific vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer, the UV stabilizer, It was confirmed that excellent effects of impact strength, heat resistance, low gloss, light fastness and odor grade can be obtained. In particular, by adding the acrylonitrile-styrene-acrylate copolymer in Example 3 by increasing the amount of the carbon black as the coloring agent in Example 2, the silicone-based impact modifier was added in Example 4 to improve the light resistance and greyscale, The effect of which is remarkably improved. In addition, although the impact properties were slightly lowered in Example 5 in which the SAN was included in the base resin, the effect of significantly improving the melt index was confirmed. It can also be seen that the gloss reducing effect is larger in Example 6 in which a part of the medium-diameter ABS-1 of (b2) is replaced by the large-diameter ABS-2 of (b1). In Example 7 in which the entire PC-1 having a melt index of 3 g / 10 min of (a1) was replaced by PC-2 having a melt index of 15 g / 10 min of (a2), the low temperature impact strength was somewhat lowered, And it was confirmed that the effect was greatly improved.

On the other hand, in Comparative Example 1 in which carbon black as a coloring agent was not added and Comparative Example 2 in which a UV stabilizer was not added, light resistance and greyscale were lowered. As in Comparative Example 3, when the entire amount of the medium-cured ABS-2 of (b2) was used as the vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer, the gloss was increased, When using the full-diameter ABS-3, there was a problem that the gloss was further increased. On the other hand, when the quencher of (h) is used as in Comparative Example 5, the glossiness can be reduced, but the melt index and impact strength are decreased and the odor rating is deteriorated. Also, when the entire amount of the large-diameter ABS-1 of (b1) was used as the vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer as in Comparative Example 6, there was a problem that the gloss lowering effect but the low temperature impact strength were remarkably decreased. When the large-diameter ABS-1 of (b1) and the small-diameter ABS-3 of (b3) were kneaded with the vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer as in Comparative Example 7, In addition, the low temperature impact strength was reduced.

Claims (15)

(a) 50 to 80% by weight of a polycarbonate resin having a melt index of 2 g / 10 min or more to 25 g / 10 min or less,
(b1) a vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer having an average particle diameter of not less than 6.5 μm and not more than 12 μm and (b2) a vinyl cyan compound-conjugated diene compound having an average particle diameter of not less than 2 μm and less than 6.5 μm 20 to 50% by weight of a vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer obtained by mixing a compound copolymer at a weight ratio of 3: 1 to 1:10,
(c) 0 to 5% by weight of an acrylic compound-aromatic vinyl compound-vinyl cyanide copolymer,
(d) 0 to 10% by weight of an aromatic vinyl compound-vinyl cyanide copolymer, and
(e) 0 to 5% by weight of an impact modifier;
(f) 0.2 to 2.0 parts by weight of a UV stabilizer; And
(g) 0.3 to 1.0 part by weight of a colorant;
/ RTI &gt;
Polycarbonate-ABS based alloy resin composition.
The method according to claim 1,
Wherein the polycarbonate resin (a) has a weight average molecular weight of not less than 35,000 g / mol and not more than 85,000 g / mol,
Polycarbonate-ABS based alloy resin composition.
The method according to claim 1,
(A1) a polycarbonate resin having a melt index of from about 2 g / 10 min to about 9 g / 10 min and (a2) a melt index of from about 9 g / 10 min to about 25 g / 10 min By weight of a polycarbonate resin,
Polycarbonate-ABS based alloy resin composition.
The method according to claim 1,
Wherein the copolymer (b1) comprises 5 to 18% by weight of a conjugated diene compound, 50 to 90% by weight of an aromatic vinyl compound, and 10 to 30% by weight of a vinyl cyanide compound.
Polycarbonate-ABS based alloy resin composition.
The method according to claim 1,
Wherein the copolymer (b2) comprises 8 to 30% by weight of a conjugated diene compound, 40 to 80% by weight of an aromatic vinyl compound, and 10 to 30% by weight of a vinyl cyanide compound.
Polycarbonate-ABS based alloy resin composition.
The method according to claim 1,
Wherein the copolymer (c) comprises 50 to 70% by weight of an acrylic compound, 20 to 40% by weight of an aromatic vinyl compound, and 5 to 20% by weight of a vinyl cyan compound.
Polycarbonate-ABS based alloy resin composition.
The method according to claim 1,
Wherein the copolymer (d) comprises 60 to 85% by weight of an aromatic vinyl compound and 15 to 40% by weight of a vinyl cyan compound.
Polycarbonate-ABS based alloy resin composition.
The method according to claim 1,
The impact modifier (e) is a silicone-acrylic copolymer,
Polycarbonate-ABS based alloy resin composition.
9. The method of claim 8,
Wherein the silicone-acrylic copolymer comprises 60 to 90% by weight of a silicone-based rubbery core and 10 to 40% by weight of a shell containing an alkyl methacrylate monomer formed on the core.
Polycarbonate-ABS based alloy resin composition.
The method according to claim 1,
(F) the UV stabilizer is a benzotriazole-based ultraviolet absorber; Or benzotriazole-based ultraviolet absorber and 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5 - ((hexyl) oxy) ) -1,3,5-triazin-2-yl) -5 - ((hexyl)) oxy) -phenol)
Polycarbonate-ABS based alloy resin composition.
The method according to claim 1,
(G) at least one colorant selected from the group consisting of carbon black, carbon nanotubes, and carbon fibers,
Polycarbonate-ABS based alloy resin composition.
The method according to claim 1,
The polycarbonate-ABS series resin composition may contain one kind selected from the group consisting of an antimicrobial agent, an antioxidant, a releasing agent, a surfactant, a coupling agent, a plasticizer, an admixture, a colorant, an antistatic agent, a flame retardant, &Lt; / RTI &gt;
Polycarbonate-ABS based alloy resin composition.
(a) 50 to 80% by weight of a polycarbonate resin having a melt index of not less than 2 g / 10 min and not more than 25 g / 10 min, (b1) a vinyl cyan compound-conjugated diene compound having an average particle diameter of not less than 6.5 탆 and not more than 12 탆, And (b2) a vinyl cyan compound-conjugated diene compound-aromatic compound in which a vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer having an average particle diameter of 2 μm or more and less than 6.5 μm is mixed at a weight ratio of 3: 1 to 1:10 (C) 0 to 5% by weight of an acrylic compound-aromatic vinyl compound-vinyl cyanide copolymer, (d) 0 to 10% by weight of an aromatic vinyl compound-vinyl cyanide copolymer, and (e) 0 to 5% by weight of an impact modifier; (f) 0.2 to 2.0 parts by weight of a UV stabilizer; And (g) 0.3 to 1.0 part by weight of a colorant.
A method for producing a polycarbonate-ABS based alloy resin composition.
A molded article produced by including the polycarbonate-ABS-based alloy resin composition of any one of claims 1 to 12.
15. The method of claim 14,
Wherein the molded article is an automobile interior material.