Resin composition, molded article, and article

Abstract

To provide a resin composition that prevents the occurrence of bleeding and has excellent impact resistance and wear resistance and a molding.SOLUTION: A resin composition comprises a methacrylic resin, a styrenic elastomer, and a fatty acid amide.SELECTED DRAWING: None

Description

Technical Field

[0001] The present disclosure relates to a resin composition and a molded article.

Background Art

[0002] Acrylic resins such as polymethyl methacrylate are excellent in high gloss and transparency and are suitably used for automotive parts and the like. Patent Document 1 discloses a composition and a molded article containing such an acrylic resin.

[0003] Acrylic resins have a problem of being somewhat inferior in impact resistance. In contrast, Patent Document 2 discloses a composition in which ASA (acrylonitrile-styrene-acrylic rubber copolymer) is added to an acrylic resin to improve impact resistance. The composition of Patent Document 2 further has a scratch reinforcing agent made of silicone such as polydimethylsiloxane.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] In Patent Document 2, the silicone used as a scratch reinforcing agent has insufficient compatibility with the acrylic resin and there is a concern that it may bleed out on the surface of the molded article. If the silicone bleeds out on the surface of the molded article, there is a problem that the scratch resistance (abrasion resistance) also decreases.

[0006] The present disclosure has been made in view of the above circumstances, and an object thereof is to provide a resin composition and a molded article that can suppress the occurrence of bleeding and are excellent in impact resistance and abrasion resistance. The present disclosure can be realized in the following forms.

Means for Solving the Problems

[0007] [1] A resin composition comprising a (meth)acrylic resin, a styrene-based elastomer, and a fatty acid amide.

Effects of the Invention

[0008] The present disclosure can suppress the occurrence of bleeding and can provide a resin composition excellent in impact resistance and abrasion resistance.

Modes for Carrying Out the Invention

[0009] Here, desirable examples of the present disclosure are shown. [2] A resin composition containing a compatibilizer. [3] A resin composition containing a maleimide copolymer. [4] A resin composition in which the blending amount of the styrene-based elastomer is 5.0 parts by mass or more and less than 50 parts by mass with respect to a total of 100 parts by mass of the (meth)acrylic resin and the styrene-based elastomer. [5] A resin composition in which the blending amount of the fatty acid amide is less than 4.0 parts by mass with respect to a total of 100 parts by mass of the (meth)acrylic resin and the styrene-based elastomer. [6] A molded article obtained by molding the above resin composition.

[0010] Hereinafter, embodiments of the present disclosure will be described in detail. In this specification, in the description using "~" for a numerical range, unless otherwise specified, it includes the lower limit value and the upper limit value. For example, in the description of "10~20", both the lower limit value "10" and the upper limit value "20" are included. That is, "10~20" has the same meaning as "10 or more and 20 or less".

[0011] The resin composition of the present disclosure contains a (meth)acrylic resin, a styrene-based elastomer, and a fatty acid amide. Further, the resin composition can contain at least one of a compatibilizer and a maleimide-based copolymer as optional components.

[0012] <(meth)acrylic resin> (The (meth)acrylic resin means at least one of an acrylic resin and a methacrylic resin. The acrylic resin and the methacrylic resin may be used alone or in combination. (Meth)acrylic means "acrylic" and / or "methacrylic" (one or both of "acrylic" and "methacrylic").

[0013] (The (meth)acrylic resin is a polymer using a (meth)acrylic monomer as a main monomer component. Examples of the (meth)acrylic monomer include (meth)acrylic acid, alkyl (meth)acrylate, hydroxyl group-containing (meth)acrylate, oxo group-containing (meth)acrylate, epoxy group-containing (meth)acrylate, carbonyl group-containing (meth)acrylate, halogen group-containing (meth)acrylate, nitrogen-containing (meth)acrylate, alkoxyalkyl (meth)acrylate, aralkyl (meth)acrylate, aziridinyl group-containing (meth)acrylate, diene structure-containing (meth)acrylic acid compound, and the like. These (meth)acrylic monomers may be used alone or in combination of two or more.

[0014] In the present disclosure, it is preferable to use alkyl (meth)acrylate as the (meth)acrylic monomer. The content of alkyl (meth)acrylate is preferably 50% by weight or more, preferably 60% by weight or more, more preferably 70% by weight or more, and still more preferably 80% by weight or more based on the total amount of the components of the (meth)acrylic monomer. The alkyl (meth)acrylate may be contained up to 100% by weight based on the total amount of the components of the (meth)acrylic monomer.

[0015] Examples of the alkyl (meth)acrylate include methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, tert-butyl (meth)acrylate, sec-butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, n-octyl (meth)acrylate, tridecyl (meth)acrylate, cyclohexyl (meth)acrylate, n-lauryl (meth)acrylate, dodecyl (meth)acrylate, stearyl (meth)acrylate, isobornyl methacrylate, and the like. These alkyl (meth)acrylates may be used alone or in combination of two or more.

[0016] In the present disclosure, from the viewpoint of excellent transparency and weather resistance of the resin, it is preferable to use polymethyl (meth)acrylate (PMMA) having methyl (meth)acrylate as a main monomer as the (meth)acrylic resin.

[0017] Polymethyl (meth)acrylate may be a homopolymer of methyl (meth)acrylate, or may be a copolymer containing 50% by weight or more of methyl (meth)acrylate. Examples of the copolymerizable components include methacrylic acid esters, (meth)acrylic acid, etc., and furthermore, monomers other than (meth)acrylic monomers such as maleimides and styrene may be used, and one or more of these can be selected and copolymerized.

[0018] The melt index (MFI) of polymethyl (meth)acrylate measured at 230°C under a load of 3.8 kgf in accordance with ISO 1133 is preferably 0.5 ml / 10 min to 20 ml / 10 min. If the melt index (MFI) of polymethyl (meth)acrylate is lower than 0.5 ml / 10 min, there is a concern that the processability of the molded body will deteriorate. If the melt index of polymethyl (meth)acrylate exceeds 20 ml / 10 min, there is a concern that the impact resistance of the molded body will decrease.

[0019] Polymethyl (meth) acrylate is preferably composed of a plurality of types with different melt indices. By using a plurality of types with different melt indices in combination, the impact resistance can be adjusted and the processability can be improved. For example, a first polymethyl (meth) acrylate having a melt index of 1.0 ml / 10 min to 3.0 ml / 10 min and a second polymethyl (meth) acrylate having a melt index of 6.0 ml / 10 min to 10 ml / 10 min can be used in combination.

[0020] <Styrene-based elastomer> A styrene-based elastomer is an elastomer having styrene as a monomer unit. A styrene-based elastomer is a thermoplastic elastomer and can have rubber elasticity. Therefore, a resin composition containing a styrene-based elastomer can improve the impact resistance.

[0021] Examples of the styrene-based elastomer include ASA (acrylonitrile-styrene-acrylate) resin, ABS (acrylonitrile-butadiene-styrene) resin, AES (acrylonitrile-ethylene propylene rubber-styrene) resin, AS (acrylonitrile-styrene) resin, SB (styrene-butadiene) resin, SBS (styrene-butadiene-styrene) resin, SEBS (styrene-ethylene-butylene-styrene) resin, SEPS (styrene-ethylene-propylene-styrene) resin, SEEPS (styrene-ethylene-ethylene-propylene-styrene) resin, SIS (styrene-isoprene-styrene) resin, MBS (methyl methacrylate-butadiene-styrene) resin, MABS (methyl methacrylate-acrylonitrile-butadiene-styrene) resin, MAS (methyl methacrylate-acrylic rubber-styrene) resin, methyl methacrylate-acrylic-butadiene rubber-styrene resin, and the like. These styrene-based elastomers may be used alone or in combination of two or more.

[0022] Among the above styrene-based elastomers, resins containing acrylonitrile such as ASA resin, ABS resin, AES resin, and AS resin are more preferable. Styrene-based elastomers containing acrylonitrile can improve the compatibility with polymers having polar groups and also contribute to the improvement of physical properties such as impact resistance. In particular, ASA resin is excellent in weather resistance and is suitable for use outdoors or indoors exposed to sunlight.

[0023] The melt volume flow rate (MVR) of the styrene-based elastomer measured at 220 °C under a load of 10 kgf in accordance with ISO 1133 is, from the viewpoint of moldability, 1 cm 3 / 10 min to 20 cm 3 / 10 min is good, preferably 2 cm 3 / 10 min to 18 cm 3 / 10 min, more preferably 3 cm 3 / 10 min to 15 cm 3 / 10 min.

[0024] The blending amount of the styrene-based elastomer is preferably 5.0 parts by mass or more and less than 50 parts by mass with respect to a total of 100 parts by mass of the (meth)acrylic resin and the styrene-based elastomer. If the blending amount of the styrene-based elastomer is less than 5.0 parts by mass, there is a concern that the impact resistance may be inferior. If the blending amount of the styrene-based elastomer is 50 parts by mass or more, it takes a co-continuous structure and becomes cloudy, and it is impossible to take a good sea-island structure or a complete compatible structure, and it becomes difficult to obtain high glossiness.

[0025] From the viewpoint of improving the high glossiness and impact resistance of the resin composition, the blending amount of the styrene-based elastomer is preferably 7 parts by mass to 45 parts by mass, more preferably 9 parts by mass to 40 parts by mass, and still more preferably 13 parts by mass to 27 parts by mass with respect to a total of 100 parts by mass of the (meth)acrylic resin and the styrene-based elastomer.

[0026] <Fatty acid amide> Fatty acid amides have high abrasion resistance and can function as abrasion resistance improvers. Therefore, it is expected that a molded article that is difficult to be scratched can be molded from a resin composition containing a fatty acid amide. In particular, since fatty acid amides have higher compatibility with (meth)acrylic resins than silicone and the like, it is considered that bleed-out onto the surface of the molded article can be suppressed.

[0027] The fatty acid amide may be a lower fatty acid amide, but from the viewpoint of excellent compatibility with (meth)acrylic resins, it is preferably a higher fatty acid amide having 10 to 25 carbon atoms in the fatty acid, preferably 12 to 22 carbon atoms.

[0028] Examples of the fatty acid amide include unsaturated fatty acid amides such as erucic acid amide, oleic acid amide, brassidic acid amide, and elaidic acid amide, saturated fatty acid amides such as lauric acid amide, palmitic acid amide, stearic acid amide, and behenic acid amide, and bis-fatty acid amides such as methylene bis-stearic acid amide, methylene bis-oleic acid amide, ethylene bis-stearic acid amide, and ethylene bis-oleic acid amide. These fatty acid amides may be used alone or in combination of two or more.

[0029] Among the above fatty acid amides, from the viewpoint of excellent abrasion resistance, erucic acid amide, oleic acid amide, ethylene bis-oleic acid amide, stearic acid amide, and behenic acid amide are preferable, and erucic acid amide, oleic acid amide, and ethylene bis-oleic acid amide are more preferable.

[0030] The blending amount of the fatty acid amide is preferably less than 4.0 parts by mass with respect to 100 parts by mass in total of the (meth)acrylic resin and the styrene-based elastomer. When the blending amount of the fatty acid amide is 4.0 parts by mass or more, the blending balance deteriorates and it becomes difficult to suppress bleed-out onto the surface of the molded article. The fatty acid amide may be a single product, but a masterbatch product with a resin or other components may also be used. When using a masterbatch product, the blending amount of the fatty acid amide means the net blending amount of the fatty acid amide.

[0031] From the viewpoint of being able to suppress the generation of bleed and obtain good scratch resistance, the blending amount of the fatty acid amide is preferably 0.2 parts by mass to 3.6 parts by mass, more preferably 0.4 parts by mass to 3.0 parts by mass, based on 100 parts by mass in total of the (meth)acrylic resin and the styrene-based elastomer.

[0032] <Compatibilizer> The resin composition of the present disclosure can contain a compatibilizer. The compatibilizer is not particularly limited, but from the viewpoint of improving the compatibility between the (meth)acrylic resin and the styrene-based elastomer, vinyl-based resins, particularly styrene-based resins, are preferable, and examples thereof include styrene-acrylonitrile copolymer (SAN), styrene-butadiene copolymer, styrene-acrylonitrile-butadiene copolymer, polyα-methylstyrene, and the like. The compatibilizer may be used alone or in combination of two or more.

[0033] The blending amount of the compatibilizer is preferably 1 part by mass to 20 parts by mass, preferably 2 parts by mass to 18 parts by mass, more preferably 3 parts by mass to 15 parts by mass, based on 100 parts by mass in total of the (meth)acrylic resin and the styrene-based elastomer. By setting the blending amount of the compatibilizer within the above range, the compatibility between the (meth)acrylic resin and the styrene-based elastomer can be improved.

[0034] <Maleimide-based copolymer> The resin composition of the present disclosure can contain a maleimide-based copolymer. The maleimide-based copolymer is a copolymer containing a styrene-based monomer and a maleimide-based monomer as monomer components.

[0035] The maleimide copolymer is not particularly limited, but from the viewpoint of heat resistance, a styrene-N-phenylmaleimide copolymer containing structural units derived from styrene and N-phenylmaleimide is preferred. Examples of the styrene-N-phenylmaleimide copolymer include a styrene-N-phenylmaleimide copolymer, a styrene-N-phenylmaleimide-maleic anhydride copolymer, a styrene-N-phenylmaleimide-acrylonitrile copolymer, a styrene-N-phenylmaleimide-methyl methacrylate copolymer, and the like. The maleimide copolymer may be used alone or in combination of two or more.

[0036] In particular, the styrene-N-phenylmaleimide-maleic anhydride copolymer contains a rigid skeleton based on a maleimide group (structural unit derived from maleimide) and a maleic anhydride group (structural unit derived from maleic anhydride) capable of reacting with a functional group such as an acrylic group. Therefore, it is expected to increase the hardness and rigidity while maintaining the impact resistance of the styrene-based elastomer, and thus it is preferred. Examples of the styrene-based elastomer that can react with the styrene-N-phenylmaleimide-maleic anhydride copolymer include an ASA resin blended with an acrylic rubber having an acrylic group.

[0037] The blending amount of the maleimide copolymer is preferably 0.1 part by mass or more and less than 10 parts by mass with respect to a total of 100 parts by mass of the (meth)acrylic resin and the styrene-based elastomer. When the blending amount of the maleimide copolymer is 10 parts by mass or more, the molded body takes a co-continuous structure and becomes cloudy, making it difficult to obtain high glossiness. From the viewpoint of being able to adjust to a predetermined hardness, the blending amount of the maleimide copolymer is preferably 0.5 to 9 parts by mass, more preferably 1 to 7 parts by mass, with respect to a total of 100 parts by mass of the (meth)acrylic resin and the styrene-based elastomer.

[0038] <Other optional components> The resin composition, as optional components other than the compatibilizer and the maleimide copolymer, may include, as necessary, pigments, dyes, antioxidants, weathering agents, weather resistance improvers, antistatic agents, antifogging agents, lubricants, processing aids, heat stabilizers, mold release agents, fluidity improvers, plasticizers, dispersants, antibacterial agents, etc. These may be used alone or in combination of two or more. For example, as the weathering agent, an N-alkoxy (NOR type) hindered amine-based compound can be preferably used.

[0039] <Method for producing the resin composition> The resin composition of the present disclosure is produced, for example, by melt-kneading a mixture of the above components. Alternatively, the resin composition may be produced, for example, by dissolving the above components in a solvent. The means for melt-kneading is not particularly limited, and examples thereof include a twin-screw extruder, a Henschel mixer, a Banbury mixer, a single-screw extruder, a multi-screw extruder, a kneader, etc.

[0040] <Molded article> The resin composition of the present disclosure can be used as a molding material for various molded articles. Examples of the method for molding the resin composition into a molded article include injection molding, extrusion molding, blow molding, hot press molding, calender molding, coating molding, cast molding, vacuum molding, transfer molding, etc.

[0041] The molded article is not particularly limited, and examples thereof include electric and electronic devices, OA devices, household appliances, building members, various containers, sundries, lighting devices, etc. In particular, in the present disclosure, since it can be a molded article excellent in weather resistance, it is useful for automotive parts, particularly exterior and interior parts of automobiles.

[0042] Examples of automotive exterior and interior parts include bumpers, fenders, door panels, trunk lids, front panels, rear panels, roof panels, bonnets, pillars, side moldings, wheel caps, hood bulges, fuel lids, spoilers, trims, motorcycle cowls, instrument panels, console boxes, luggage floor boards, speaker boxes, etc.

[0043] <Physical properties of the molded body> (1) Tensile modulus The tensile modulus measured under the conditions of a chuck distance of 115 mm, a gauge distance of 50 mm, and a crosshead moving distance of 1 mm / min in accordance with ISO 527-1 and 527-2 for the above molded body is preferably 2500 Mpa or more, more preferably 3000 Mpa or more. There is no particular upper limit, but it is practical that it is 4000 MPa or less.

[0044] (2) Charpy impact strength The Charpy impact strength measured at 23°C using a Charpy impact tester (DG-CB type manufactured by Toyo Seiki Seisakusho Co., Ltd.) in accordance with ISO 179-1 (notched) for the above molded body is 1.5 kJ / m 2 or more, preferably 2.8 kJ / m 2 or more. There is no particular upper limit, but it is practical that it is 6.0 kJ / m 2 or less.

[0045] (3) Rockwell hardness The Rockwell hardness measured on the M scale using a Rockwell hardness tester (TYPE E manufactured by Toyo Seiki Seisakusho Co., Ltd.) in accordance with ISO 2039-2 for the above molded body is preferably 78 or more, more preferably 85 or more. There is no particular upper limit, but it is practical that it is 100 or less.

[0046] (4) Heat distortion temperature under load (heat distortion temperature, HDT) In accordance with ISO 75-2, a test piece (80 mm in length, 10 mm in width, and 4 mm in thickness) of the above molded body was cut out, and the load deflection temperature measured using a heat distortion tester under the conditions of a bending stress of 0.45 MPa applied to the test piece and a standard deflection amount of 0.34 mm is preferably 80°C or higher, more preferably 90°C or higher. Although there is no particular upper limit, it is practical that it is 100°C or lower.

[0047] (5) Scratch resistance (resistance to scratching) When the surface of the above molded body was scratched on a 50 mm straight line at a speed of 50 mm / s with a load of 5 N using a scratching hardness tester (Pencil type scratching hardness tester 318 manufactured by Erichsen, tip diameter: 0.75 mm) and the presence or absence of whitening was visually confirmed, those without whitening are preferred. Those without whitening even under a load of 10 N are more preferred, and those without whitening even under a load of 15 N are even more preferred.

[0048] (6) Abrasion resistance In the abrasion test measured under the following conditions, it is preferable that there is no abrasion on the surface of the above molded body. (Conditions of friction test) · Name of test apparatus: The Science Promotion Agency type friction tester · Test method: Refer to "JIS K 6404-4 Test methods for rubber and plastic coated fabrics - Part 4: Durability test - 8.3 Science Promotion Agency type friction test" · Test piece: 40 mm in width and 250 mm in length · Load weight: 4.9 N · Friction element: 10 mm in diameter · Friction stroke: 60 mm · Friction speed: 60 times / min · Number of friction cycles: 5000 times · Implementation method: A dry cloth with a width of 50 mm and a length of 50 mm was overlaid, and a friction test was carried out, and it was visually confirmed whether there were significant scratches on the appearance of the test piece after measurement.

[0049] (7) Glossiness A test piece (60 mm in length, 60 mm in width, and 2 mm in thickness) of the above-mentioned molded body was measured at an incident angle of 60° using a gloss meter (manufactured by Nippon Denshoku Industries Co., Ltd.: VG7000) in accordance with JIS Z8741. The glossiness is preferably 80% or more. More preferably, the glossiness is 95% or more, and still more preferably 100% or more. The glossiness is the glossiness with the specular glossiness of the glass surface with a refractive index of 1.567 defined as 100%. Therefore, the glossiness of the molded body may exceed 100%.

Examples

[0050] Hereinafter, examples and comparative examples will be specifically described, but the present invention is not limited to the following examples. Details of the components (materials) used in the examples and comparative examples are as follows.

[0051] <Components (Materials)> ·(Meth)acrylic resin 1: Methyl methacrylate resin (polymethyl (meth)acrylate), "PMMA ACRYREX (registered trademark) CM-205" manufactured by Chimei Corporation, MFI (230 °C, 3.8 kgf) 1.9 ml / 10 min ·(Meth)acrylic resin 2: Methyl methacrylate resin (polymethyl (meth)acrylate), "PMMA ACRYREX (registered trademark) CM-207" manufactured by Chimei Corporation, MFI (230 °C, 3.8 kgf) 8.5 ml / 10 min ·Styrene-based elastomer: ASA resin (acrylonitrile-styrene-acrylate copolymer), MVR (220 °C, 10 kgf) 3 cm 3 / 10 min to 15 cm 3 / 10 min ·Compatibilizer: Styrene-acrylonitrile copolymer (SAN), "Sunrex (registered trademark) SAN-C" manufactured by Techno UMG Co., Ltd., MFR (220 °C, 10 kgf) 25 g / 10 min ·Maleimide-based copolymer: Styrene-N-phenylmaleimide-maleic anhydride copolymer, "Denka IP MS-NJ" manufactured by Denka Co., Ltd., MFR (265 °C, 98 N) 20 g / 10 min · Fatty acid amide: Higher fatty acid amide (erucic acid amide), "Nofaloy (registered trademark) KA832" manufactured by NOF Corporation, a masterbatch product containing 20% by mass of fatty acid amide, MFR (190 °C, 2.16 kgf) 20 g / 10 min · Weathering agent: NOR type hindered amine derivative, "Tinuvin (registered trademark) XT855FF" manufactured by BASF Japan Ltd. · Antioxidant 1: Phenolic antioxidant, "Adekastab (registered trademark) AO-60" manufactured by ADEKA Corporation · Antioxidant 2: Phosphite antioxidant, "Adekastab 2112" manufactured by ADEKA Corporation

[0052] Details of the examples and comparative examples are shown below. In the following description and in Table 1, the blending amount of "fatty acid amide" is the net blending amount of fatty acid amide, not the blending amount of the masterbatch product. <Example 1> (Meth)acrylic resin 1: 40 parts by mass, (meth)acrylic resin 2: 40 parts by mass, styrene elastomer: 20 parts by mass, compatibilizer: 5 parts by mass, fatty acid amide: 0.6 parts by mass, weathering agent: 0.2 parts by mass, antioxidant 1: 0.1 parts by mass, antioxidant 2: 0.1 parts by mass were mixed at the mixing ratio, and using a twin-screw extruder, melt-kneaded at a discharge rate of 20 kg / h, a rotation speed of 200 rpm, and 240 °C to obtain a pelletized resin composition. The obtained resin composition was injection-molded at 250 °C to obtain a molded body.

[0053] <Example 2> In Example 1, a resin composition and a molded body were obtained in the same manner as in Example 1, except that the fatty acid amide was changed to 1.0 part by mass.

[0054] <Example 3> In Example 1, a resin composition and a molded body were obtained in the same manner as in Example 1, except that the fatty acid amide was changed to 2.0 parts by mass.

[0055] <Example 4> In Example 1, a resin composition and a molded article were obtained in the same manner as in Example 1, except that the blending ratio was changed to 45 parts by mass of (meth)acrylic resin 1, 45 parts by mass of (meth)acrylic resin 2, 10 parts by mass of a styrene-based elastomer, 2.5 parts by mass of a compatibilizer, and 1.0 part by mass of a fatty acid amide.

[0056] <Example 5> In Example 1, a resin composition and a molded article were obtained in the same manner as in Example 1, except that the blending ratio was changed to 35 parts by mass of (meth)acrylic resin 1, 35 parts by mass of (meth)acrylic resin 2, 30 parts by mass of a styrene-based elastomer, 7.5 parts by mass of a compatibilizer, and 1.0 part by mass of a fatty acid amide.

[0057] <Example 6> In Example 1, a resin composition and a molded article were obtained in the same manner as in Example 1, except that the fatty acid amide was changed to 1.0 part by mass and 2 parts by mass of a maleimide-based copolymer was added.

[0058] <Example 7> In Example 1, a resin composition and a molded article were obtained in the same manner as in Example 1, except that the fatty acid amide was changed to 1.0 part by mass and 5 parts by mass of a maleimide-based copolymer was added.

[0059] <Comparative Example 1> In Example 1, a resin composition and a molded article were obtained in the same manner as in Example 1, except that no compatibilizer and fatty acid amide were added.

[0060] <Comparative Example 2> In Example 1, a resin composition and a molded article were obtained in the same manner as in Example 1, except that (meth)acrylic resin 1 was changed to 50 parts by mass, (meth)acrylic resin 2 was changed to 50 parts by mass, and no styrene-based elastomer, compatibilizer, and fatty acid amide were added. For the molded articles (test pieces) obtained in Examples 1 to 7 and Comparative Examples 1 and 2, each measurement and evaluation of the "physical properties of the molded article" were performed. The results are shown in Table 1.

[0061]

Table 1

[0062] In Table 1, “B” in “Scratch resistance: 5 N, 10 N, 15 N” means that no whitening was observed in the above-mentioned scratch test for scratch resistance. “C” means that whitening was observed. “B” in “Wear resistance” means that no significant scratches were observed in the above-mentioned wear test for wear resistance. “C” means that significant scratches were observed. “B” in “Overall evaluation” means that it corresponds to the “suitable” level in the overall evaluation. “A” means that it corresponds to the “preferred” level exceeding the “suitable” level in the overall evaluation. “C” means that it corresponds to the “unsuitable” level in the overall evaluation. In Examples 1 to 7, the “Charpy impact strength” which is an index of impact resistance was all above 1.5 kJ / m 2 Also, both “wear resistance” and “scratch resistance” were rated “B”. Furthermore, in Examples 1 to 7, bleed-out on the surface of the molded body was suppressed.

[0063] Therefore, according to the present disclosure, it is possible to suppress the occurrence of bleed, and to provide a resin composition and a molded body excellent in impact resistance and wear resistance.

[0064] The above embodiments are illustrative in all respects, and the present invention is not limited to the above embodiments. For example, the styrenic elastomer contains styrene as a monomer unit, and is not limited to the above examples as long as it can contribute to the improvement of physical properties such as impact resistance.

Claims

Claim 1. A resin composition comprising a (meth)acrylic resin other than that defined by the following styrene-based elastomer, a styrene-based elastomer, a fatty acid amide, and a compatibilizer, wherein the styrene-based elastomer contains one or more selected from acrylonitrile-styrene-acrylate resin, acrylonitrile-butadiene-styrene resin, acrylonitrile-ethylene propylene rubber-styrene resin, acrylonitrile-styrene resin, styrene-butadiene resin, styrene-butadiene-styrene resin, styrene-ethylene-butylene-styrene resin, styrene-ethylene-propylene-styrene resin, styrene-ethylene-ethylene-propylene-styrene resin, styrene-isoprene-styrene resin, methyl methacrylate-butadiene-styrene resin, methyl methacrylate-acrylonitrile-butadiene-styrene resin, methyl methacrylate-acrylic rubber-styrene resin, methyl methacrylate-acrylic-butadiene rubber-styrene resin, the fatty acid amide contains one or more selected from erucic acid amide, oleic acid amide, brassidic acid amide, elaidic acid amide, lauric acid amide, palmitic acid amide, behenic acid amide, methylene bisstearic acid amide, methylene bisoleic acid amide, ethylene bisstearic acid amide, ethylene bisoleic acid amide, the compatibilizer contains one or two selected from styrene-acrylonitrile copolymer and polyα-methylstyrene, with respect to a total of 100 parts by mass of the (meth)acrylic resin and the styrene-based elastomer, the blending amount of the styrene-based elastomer is 5.0 parts by mass or more and less than 50 parts by mass, and the blending amount of the fatty acid amide is less than 4.0 parts by mass. Claim 2. A resin composition comprising a (meth)acrylic resin other than that defined by the following styrene-based elastomer and the following maleimide-based copolymer, a styrene-based elastomer, a fatty acid amide, a compatibilizer, and a maleimide-based copolymer, The styrenic elastomer contains one or more selected from acrylonitrile-styrene-acrylate resin, acrylonitrile-butadiene-styrene resin, acrylonitrile-ethylene propylene rubber-styrene resin, acrylonitrile-styrene resin, styrene-butadiene resin, styrene-butadiene-styrene resin, styrene-ethylene-butylene-styrene resin, styrene-ethylene-propylene-styrene resin, styrene-ethylene-ethylene-propylene-styrene resin, styrene-isoprene-styrene resin, methyl methacrylate-butadiene-styrene resin, methyl methacrylate-acrylonitrile-butadiene-styrene resin, methyl methacrylate-acrylic rubber-styrene resin, methyl methacrylate-acrylic-butadiene rubber-styrene resin, The compatibilizer contains one or two selected from styrene-acrylonitrile copolymer and polyα-methylstyrene, The maleimide copolymer is a copolymer containing a styrenic monomer and a maleimide monomer as monomer components, Based on a total of 100 parts by mass of the (meth)acrylic resin and the styrenic elastomer, The blending amount of the styrenic elastomer is 5.0 parts by mass or more and less than 50 parts by mass, The resin composition in which the blending amount of the fatty acid amide is less than 4.0 parts by mass.

3. The resin composition according to claim 1 or claim 2, wherein the (meth)acrylic resin is a polymer in which the (meth)acrylic monomer is most used as a monomer component.

4. The resin composition according to any one of claims 1 to 3, wherein the (meth)acrylic resin is polyalkyl (meth)acrylate.

5. A molded article obtained by molding the resin composition according to any one of claims 1 to 4.

6. An article comprising the molded article according to claim 5, The article is selected from electric and electronic equipment, OA equipment, household appliances, building members, containers, daily necessities, lighting equipment, and automotive parts.

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