Resin composition and molded article

Abstract

The present invention relates to a resin composition and a molded article, and aims to provide a resin composition having excellent flame retardancy, excellent drip resistance during combustion, and excellent flowability. A resin composition comprising (a) (a-1) a polyphenylene ether resin, (a-2) a styrene resin, and (a-3) one or more compounds selected from the group consisting of phosphate ester compounds and phosphazene compounds, or (a-1) a polyphenylene ether resin and (a-3) one or more compounds selected from the group consisting of phosphate ester compounds and phosphazene compounds; and (b) a polyarylate resin, the number average molecular weight of the component (a-1) being 1.5 * 104 to 2.5 * 104, the glass transition temperature of the component (a) being 100 to 145 DEG C, the amount of the component (a-3) being 5 to 40 parts by mass and the amount of the component (b) being 1 to 12 parts by mass per 100 parts by mass of the component (a-1) or a total of 100 parts by mass of the component (a-1) and the component (a-2).

Description

Technical Field

[0001] This invention relates to resin compositions and molded articles. Background Technology

[0002] In addition to excellent electrical insulation, polyphenylene ether resins also possess heat resistance, hydrolysis resistance, and flame retardancy, making them widely used in household appliances, office automation (OA) equipment, and automotive parts. For materials used in these applications, high flame retardancy is required due to fire hazards. Polyphenylene ether resins achieve flame retardancy by adding phosphorus compounds without using halogens, thus increasing their value from a safety perspective.

[0003] In addition, recent years have seen advancements in component miniaturization and structural complexity. These materials also require good flowability (processability) and mechanical properties during injection molding.

[0004] In contrast, for example, Patent Document 1 discloses a polyphenylene ether resin composition with excellent flowability and molding processability.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 8-20717 Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] With the high fluidity of polyphenylene ether resins, there is a problem that the test pieces are prone to burning and dripping during the UL flammability test (UL94).

[0010] In the UL flammability test (UL94) based on the Underwriter Laboratories standard, in order to obtain a high flame retardancy rating, it is necessary that the degreased cotton does not ignite due to burning drips during the UL flammability test. In order to prevent the spread of fire in actual fires, the anti-dripping property of the resin is also an important issue.

[0011] However, the resin composition described in Patent Document 1 above did not undergo anti-drip studies.

[0012] Therefore, the object of the present invention is to provide a resin composition and a molded article with excellent flame retardancy, anti-dripping properties during combustion, and excellent flowability.

[0013] Methods for solving problems

[0014] In order to solve the above-mentioned problems, the inventors conducted in-depth research and found that by making the resin composition include (a) a polyphenylene ether resin, (a) a styrene resin, and (a) a compound selected from phosphate ester compounds and phosphazene compounds, or (a) a polyphenylene ether resin and (a) a compound selected from phosphate ester compounds and phosphazene compounds, and including (b) a polyaryl ester resin; setting the above-mentioned component (a) to a specific molecular weight; and setting the above-mentioned component (a) to have a specific glass transition temperature, and setting each component to a specific content, the above-mentioned problems can be solved, thereby completing the present invention.

[0015] That is, the present invention is as follows. [1]

[0017] A resin composition comprising:

[0018] (a) (a-1) a polyphenylene ether resin, (a-2) a styrene-based resin, and (a-3) one or more compounds selected from phosphate ester compounds and phosphazene compounds; or (a-1) a polyphenylene ether resin and (a-3) one or more compounds selected from phosphate ester compounds and phosphazene compounds; and

[0019] (b) Polyarylate resin,

[0020] The number-average molecular weight of component (a-1) above is 1.5 × 10⁻⁶. 4 ~2.5×10 4 ,

[0021] The glass transition temperature of component (a) above is 100℃~145℃.

[0022] Relative to 100 parts by mass of component (a-1) or 100 parts by mass of the total of components (a-1) and (a-2),

[0023] The amount of the above-mentioned component (a-3) is 5 to 40 parts by mass.

[0024] The amount of component (b) above is 1 to 12 parts by mass. [2]

[0026] The resin composition as described in [1], wherein,

[0027] When component (a) above includes components (a-1) and (a-2) above,

[0028] Of the total 100 parts by mass of components (a-1) and (a-2) mentioned above,

[0029] The amount of component (a-1) above is 45 to 85 parts by mass.

[0030] The amount of component (a-2) above is 15 to 55 parts by mass.

[0031] The amount of component (a-3) is 10 to 35 parts by mass relative to the total of 100 parts by mass of components (a-1) and (a-2). [3]

[0033] The resin composition as described in [1] or [2], wherein the above-mentioned (a-3) components are phosphate ester compounds represented by the following general formula (I) or general formula (II).

[0034] [Chemistry 1]

[0035]

[0036] [Chemistry 2]

[0037]

[0038] In general formula (I), Q1, Q2, Q3 and Q4 independently represent alkyl groups having 1 to 6 carbon atoms, R11 and R12 represent methyl groups, and R13 and R14 independently represent hydrogen atoms or methyl groups.

[0039] In general formula (II), Q1, Q2, Q3 and Q4 independently represent alkyl groups having 1 to 6 carbon atoms, and R11 and R12 represent methyl groups.

[0040] In general formulas (I) and (II), y is an integer greater than or equal to 1, n1 and n2 independently represent integers from 0 to 2, and m1, m2, m3, and m4 independently represent integers from 0 to 3. [4]

[0042] The resin composition as described in any one of [1] to [3] further comprises (c) an elastomer. [5]

[0044] The resin composition as described in any one of [1] to [4] further comprises (d) a compatibilizer. [6]

[0046] The resin composition as described in any one of [1] to [5], wherein the melt flow rate, as determined according to ISO 1133, is 10 g / 10 min or more under the conditions of a test temperature of 250 °C and a load of 10 kg. [7]

[0048] The resin composition as described in any one of [1] to [6], wherein, in 100 parts by weight of the resin composition, the amount of component (a) is 70 to 99 parts by weight. [8]

[0050] The resin composition as described in any one of [1] to [7], wherein, in 100 parts by mass of the resin composition, the total amount of component (a) and component (b) is 70 to 100 parts by mass. [9]

[0052] A molded body comprising any one of the resin compositions described in [1] to [8].

[0053] The effects of the invention

[0054] According to the present invention, it is possible to provide resin compositions and molded articles with excellent flame retardancy, anti-dripping properties during combustion, and excellent flowability. Detailed Implementation

[0055] The following provides a detailed description of specific embodiments of the present invention (hereinafter referred to as "this embodiment"). This embodiment is illustrative of the invention and is not intended to limit the invention to its specific contents. The invention can be suitably implemented with modifications within its essential scope.

[0056] <Definition>

[0057] In this specification, (a-1) polyphenylene ether resin, (a-2) styrene resin, (a-3) one or more compounds selected from phosphate ester compounds and phosphazene compounds, (b) polyaryl ester resin, (c) elastomer, and (d) compatibilizer are sometimes referred to as components (a-1), (a-2), (a-3), (b), (c), and (d), respectively. Additionally, in this specification, components (a-1), (a-2), and (a-3) are sometimes collectively referred to as component (a), or sometimes components (a-1) and (a-3) are collectively referred to as component (a).

[0058] <Resin Composition>

[0059] The resin composition of this embodiment is characterized in that it comprises:

[0060] (a) (a-1) a polyphenylene ether resin, (a-2) a styrene-based resin, and (a-3) one or more compounds selected from phosphate ester compounds and phosphazene compounds; or (a-1) a polyphenylene ether resin and (a-3) one or more compounds selected from phosphate ester compounds and phosphazene compounds; and

[0061] (b) Polyarylate resin,

[0062] The number-average molecular weight of component (a-1) above is 1.5 × 10⁻⁶. 4 ~2.5×10 4 ,

[0063] The glass transition temperature of component (a) above is 100℃~145℃.

[0064] Relative to 100 parts by mass of component (a-1) above, or 100 parts by mass of the total of component (a-1) and component (a-2) above,

[0065] The amount of the above-mentioned component (a-3) is 5 to 40 parts by mass.

[0066] The amount of component (b) above is 1 to 12 parts by mass.

[0067] The above-mentioned resin composition has excellent flame retardancy and anti-dripping properties during combustion, and also has excellent flowability.

[0068] The melt flow rate (MFR) of the resin composition of this embodiment, measured according to ISO 1133 at a temperature of 250°C and a load of 10 kg, is preferably 5 g / 10 min or more. If the melt flow rate of the resin composition is 5 g / 10 min or more, its flowability is excellent. Similarly, the melt flow rate of the resin composition of this embodiment is more preferably 10 g / 10 min or more, even more preferably 15 g / 10 min or more, and even more preferably 20 g / 10 min or more. Furthermore, the melt flow rate may be 60 g / 10 min or less, or 50 g / 10 min or less.

[0069] In the resin composition of this embodiment, from the perspective of impact resistance, the Chappell impact strength is preferably 10 kJ / m. 2 The above. From the same perspective, the preferred impact strength is 15 kJ / m. 2 The above, and even more preferably, is 20 kJ / m 2 That's all. Additionally, the impact strength of the chapped metal can be 50 kJ / m. 2 the following.

[0070] It should be noted that the impact strength of the resin composition is a value determined by using test pieces of the dimensions specified in ISO-179 in a notched manner according to ISO-179.

[0071] ((a)(a-1) a polyphenylene ether resin, (a-2) a styrene resin, and (a-3) one or more compounds selected from phosphate ester compounds and phosphazene compounds, or (a-1) a polyphenylene ether resin and (a-3) one or more compounds selected from phosphate ester compounds and phosphazene compounds ((a) component))

[0072] In this embodiment, component (a) comprises (a-1) a polyphenylene ether resin, (a-2) a styrene resin, and (a-3) one or more compounds selected from phosphate ester compounds and phosphazene compounds, or (a-1) a polyphenylene ether resin and (a-3) one or more compounds selected from phosphate ester compounds and phosphazene compounds. In other words, component (a) comprises a component containing (a-1) a polyphenylene ether resin, (a-2) a styrene resin, and (a-3) one or more compounds selected from phosphate ester compounds and phosphazene compounds, or (a-1) a polyphenylene ether resin and (a-3) one or more compounds selected from phosphate ester compounds and phosphazene compounds.

[0073] (a) The ingredients may be only two or a combination of two or more.

[0074] In this embodiment, the glass transition temperature of component (a) is 100°C to 145°C, preferably 100°C to 140°C, and more preferably 100°C to 135°C or lower. The lower the glass transition temperature, the better the fluidity, but the more prone it is to dripping. When the glass transition temperature is above 100°C, the anti-dripping property is excellent; when it is below 145°C, the fluidity tends to be excellent.

[0075] It should be noted that the glass transition temperature of component (a) was obtained by using a DSC instrument to heat from 50°C to 300°C in a nitrogen atmosphere at a heating rate of 20°C per minute, then cooling down to 50°C at a heating rate of 20°C per minute, and then heating up at a heating rate of 20°C per minute.

[0076] -(a-1) Polyphenylene ether resin ((a-1) component)-

[0077] As the (a-1) component included in the resin composition of this embodiment, either a homopolymer composed of structural units of the following general formula (III) or a copolymer having structural units of the general formula (III) (hereinafter sometimes simply referred to as "polyphenylene ether") can be used.

[0078] [Chemistry 3]

[0079]

[0080] In general formula (III), O is an oxygen atom, and R21 to R24 independently represent any one of the following groups: hydrogen atom, halogen atom, primary or secondary alkyl group with 1 to 8 carbon atoms, phenyl, haloalkyl, aminoalkyl, alkyloxy group, and haloalkyloxy group (where at least 2 carbon atoms separate the halogen atom from the oxygen atom).

[0081] Examples of homopolymers of polyphenylene ether resins include, but are not limited to, poly(2,6-dimethyl-1,4-phenylene ether), poly(2-methyl-6-ethyl-1,4-phenylene ether), poly(2-methyl-6-phenyl-1,4-phenylene ether), and poly(2,6-dichloro-1,4-phenylene ether).

[0082] Examples of copolymers of polyphenylene ether resins include, but are not limited to, copolymers of 2,6-dimethylphenol with other phenols (e.g., copolymers with 2,3,6-trimethylphenol, copolymers with 2-methyl-6-butylphenol).

[0083] Among these, from the perspective of mechanical property balance and productivity, copolymers of poly(2,6-dimethyl-1,4-phenylene ether), 2,6-dimethylphenol and 2,3,6-trimethylphenol, or mixtures thereof are preferred as polyphenylene ether resins.

[0084] As a method for manufacturing the polyphenylene ether resin used in this embodiment, examples, but not limited to, known manufacturing methods described in, for example, U.S. Patent No. 3,306,874, U.S. Patent No. 3,306,875, U.S. Patent No. 3,257,357, and U.S. Patent No. 3,257,358, Japanese Patent Application Publication No. 50-51,197, Japanese Patent Application Publication No. 52-17,880, and Japanese Patent Application Publication No. 63-152,628, can be cited.

[0085] From the perspective of balancing anti-dripping properties and flowability, the specific viscosity of the polyphenylene ether resin is preferably in the range of 0.25 to 0.70 dL / g. More preferably, it is in the range of 0.30 to 0.65 dL / g, and even more preferably, in the range of 0.40 to 0.60 dL / g. If the specific viscosity is 0.25 dL / g or higher, the anti-dripping properties are excellent. Furthermore, if the specific viscosity is 0.65 dL / g or lower, the flowability is excellent. It should be noted that in this embodiment, the specific viscosity of the polyphenylene ether resin is a value obtained by measuring it using an Ubbelohde viscometer in a 0.5 g / dL chloroform solution at 30°C.

[0086] In this embodiment, a mixture of two or more polyphenylene ether resins with different specific viscosities can also be preferred.

[0087] Furthermore, the (a-1) polyphenylene ether resin of this embodiment may contain all or part of a modified polyphenylene ether. The modified polyphenylene ether referred to herein is a polyphenylene ether modified using a modified compound (hereinafter sometimes abbreviated as "modified compound") having at least one carbon-carbon double or triple bond in the molecule and having at least one group selected from the group consisting of carboxylic acid group, acid anhydride group, amino group, hydroxyl group, and glycidyl group. Only one modified compound may be used, or two or more may be used in combination.

[0088] Examples of methods for manufacturing modified polyphenylene ether include, but are not limited to, methods involving, in the presence or absence of a free radical initiator, (1) reacting the modified compound with a temperature in the range of 100°C or higher and below the glass transition temperature of polyphenylene ether; (2) melting and mixing the modified compound with a temperature in the range of 360°C or higher than the glass transition temperature of polyphenylene ether; (3) reacting the polyphenylene ether with the modified compound in solution at a temperature below the glass transition temperature of polyphenylene ether; and so on. From a productive standpoint, methods (1) or (2) are preferred among these methods for manufacturing modified polyphenylene ether.

[0089] Next, the modifying compound used to manufacture the modified polyphenylene ether will be described. The modifying compound used to manufacture the modified polyphenylene ether is a modified compound having at least one carbon-carbon double or triple bond in the molecule and having at least one group selected from the group consisting of carboxylic acid group, acid anhydride group, amino group, hydroxyl group and glycidyl group.

[0090] Examples of modified compounds that have carbon-carbon double bonds within the molecule and possess carboxylic acid or anhydride groups include, but are not limited to, unsaturated dicarboxylic acids such as maleic acid, fumaric acid, chloromaleic acid, cis-4-cyclohexene-1,2-dicarboxylic acid, and their anhydrides. Particularly from the perspective of reactivity with polyphenylene ether resins, fumaric acid, maleic acid, and maleic anhydride are preferred as modified compounds, with fumaric acid and maleic anhydride being more preferred.

[0091] In addition, compounds in which one or both of the two carboxyl groups of the above-mentioned unsaturated dicarboxylic acids are esters can also be used as modified compounds.

[0092] Examples of modified compounds having carbon-carbon double bonds and glycidyl groups within the molecule include, but are not limited to, allyl glycidyl ether, glycidyl acrylate, glycidyl methacrylate, and epoxidized natural oils. Among these, glycidyl acrylate and glycidyl methacrylate are preferred.

[0093] Examples of modified compounds having carbon-carbon double bonds and hydroxyl groups within the molecule include, but are not limited to, allyl alcohol, 4-penten-1-ol, and 1,4-pentadien-3-ol, etc., of the general formula C n H 2n-1 OH, C n H 2n-3 Unsaturated alcohols of the formula OH (where n is a positive integer), and general formula C n H 2n-5 OH, C n H 2n-7 Unsaturated alcohols such as OH (where n is a positive integer).

[0094] The modified compounds mentioned above can be used individually or in combination of two or more.

[0095] Regarding the amount of the modifying compound added during the manufacture of modified polyphenylene ether, for example from the perspective of modification efficiency, it is preferably 0.1 to 10 parts by mass relative to 100 parts by mass of polyphenylene ether, more preferably 0.3 to 5 parts by mass, and even more preferably 0.5 to 3 parts by mass.

[0096] Regarding the amount of free radical initiator added when manufacturing modified polyphenylene ether using a free radical initiator, from the perspective of modification rate and property balance, it is preferably 0.001 to 1 part by mass relative to 100 parts by mass of polyphenylene ether, more preferably 0.01 to 0.5 parts by mass, and even more preferably 0.05 to 0.3 parts by mass.

[0097] Furthermore, regarding the addition rate of the modified compound to the modified polyphenylene ether, it is preferably 0.01 to 5% by mass relative to 100% by mass of the modified polyphenylene ether, more preferably 0.05 to 3% by mass, and even more preferably 0.1 to 1% by mass.

[0098] Unreacted modified compounds and polymers of the modified compounds may remain in the modified polyphenylene ether. In the case of unreacted modified compounds and polymers of the modified compounds remaining, the residual amount is preferably less than 5% by mass, more preferably less than 3% by mass, and even more preferably less than 1% by mass.

[0099] In this embodiment, the number-average molecular weight of component (a-1) is 1.5 × 10⁻⁶. 4 ~2.5×10 4 The preferred value is 1.6×10. 4 ~2.4×10 4 More preferably 1.8×10 4 ~2.3×10 4 Lower molecular weight results in better flowability, but also a tendency to drip. The number-average molecular weight is 1.5 × 10⁻⁶. 4 The above values ​​indicate excellent anti-drip properties, with a value of 2.5 × 10⁻⁶. 4Liquidity tends to be excellent at the following times.

[0100] The number-average molecular weight of component (a-1) is the value obtained by gel permeation chromatography.

[0101] -(a-2)Styrene-based resins ((a-2) components)-

[0102] In this embodiment, (a-2) styrene-based resin ((a-2) component) refers to a copolymer obtained by polymerizing a styrene-based compound, or a styrene-based compound and a compound capable of copolymerizing with a styrene-based compound (hereinafter, "compound capable of copolymerizing with a styrene-based compound" is sometimes simply referred to as "copolymerizable compound") in the presence or absence of a rubbery polymer. Styrene-based resins belonging to (c) elastomer and (d) compatibilizer described later are considered as (c) component or (d) component, respectively, rather than (a-2) component.

[0103] Examples of styrene compounds include, but are not limited to, styrene, α-methylstyrene, 2,4-dimethylstyrene, monochlorostyrene, p-methylstyrene, p-tert-butylstyrene, and ethylstyrene. Among these, styrene is preferred as a styrene compound.

[0104] Examples of styrene compounds and compounds that can copolymerize with styrene compounds (copolymers) include, but are not limited to, methacrylates such as methyl methacrylate and ethyl methacrylate; unsaturated nitrile compounds such as acrylonitrile and methacrylonitrile; acid anhydrides such as maleic anhydride; and so on.

[0105] Relative to the total amount of the above-mentioned styrene compounds and copolymers (100% by mass), the amount of copolymers is preferably 20% by mass or less, more preferably 15% by mass or less.

[0106] Examples of rubbery polymers include conjugated diene rubbers, copolymers of conjugated dienes and aromatic vinyl compounds, and ethylene-propylene copolymer rubbers. Among these, polybutadiene, styrene-butadiene random copolymers, styrene-butadiene block copolymers, and rubber components formed by partially, substantially completely, or completely hydrogenating these polymers (e.g., rubber components with a hydrogenation rate of 50-100%) are preferred as rubbery polymers.

[0107] As component (a-2), examples include, but are not limited to, homopolymer polystyrene, rubber-modified polystyrene (HIPS), styrene-acrylonitrile copolymer (AS resin), styrene-rubber polymer-acrylonitrile copolymer (ABS resin), and other styrene-based copolymers. Among these, as component (a-2), from the perspective of compatibility with polyphenylene ether resins, one or more selected from the group consisting of homopolymer polystyrene and rubber-modified polystyrene (HIPS) are preferred.

[0108] ((a-3) is selected from one or more compounds ((a-3) components) selected from phosphate ester compounds and phosphazene compounds)

[0109] The resin composition of this embodiment contains (a-3) one or more compounds selected from phosphate ester compounds and phosphazene compounds.

[0110] (a-3) Components can be used alone or in combination of two or more.

[0111] As component (a-3), phosphate ester compounds and / or phosphazene compounds may be used, among which phosphate ester compounds are preferred from the perspective of balancing flame retardancy and flowability.

[0112] Examples of phosphate ester compounds include, but are not limited to, triphenyl phosphate, trinonylphenyl phosphate, resorcinol bis(diphenyl phosphate), resorcinol bis[bis(2,6-dimethylphenyl) phosphate], 2,2-bis{4-[bis(phenoxy)phosphoryloxy]phenyl}propane, and 2,2-bis{4-[bis(methylphenoxy)phosphoryloxy]phenyl}propane. Furthermore, examples of phosphate ester compounds include, for instance, trimethyl phosphate, triethyl phosphate, tributyl phosphate, trioctyl phosphate, tributoxyethyl phosphate, tricresyl phosphate, toluene phosphate, octyl diphenyl phosphate, and diisopropyl phenyl phosphate; monophosphate compounds such as diphenyl-4-hydroxy-2,3,5,6-tetrabromobenzyl phosphate, dimethyl-4-hydroxy-3,5-dibromobenzyl phosphate, diphenyl-4-hydroxy-3,5-dibromobenzyl phosphate, tri(chloroethyl) phosphate, tri(dichloropropyl) phosphate, tri(chloropropyl) phosphate, bis(2,3-dibromopropyl)-2,3-dichloropropyl phosphate, tri(2,3-dibromopropyl) phosphate, bis(chloropropyl)monoctyl phosphate, hydroquinone diphenyl phosphate, phenylnonylphenyl hydroquinone phosphate, and phenyl dinonylphenyl phosphate; and aromatic condensed phosphate compounds. Among these, aromatic condensed phosphate compounds are preferred due to their superior properties, such as low gas generation during processing and excellent thermal stability.

[0113] Aromatic condensed phosphate compounds are commercially available, including, but not limited to, products under the trade names "CR741", "CR733S", "PX200", and "E890" from Daihachi Chemical Industry Co., Ltd., and products under the trade names "FP600", "FP700", and "FP800" from ADEKA Co., Ltd.

[0114] As the component (a-3) used in this embodiment, it is preferably an aromatic condensed phosphate ester represented by the following general formula (I) or the following general formula (II), and more preferably an aromatic condensed phosphate ester represented by general formula (I).

[0115] [Chemistry 4]

[0116]

[0117] [Chemistry 5]

[0118]

[0119] In general formula (I), Q1, Q2, Q3 and Q4 independently represent alkyl groups having 1 to 6 carbon atoms, R11 and R12 represent methyl groups, and R13 and R14 independently represent hydrogen atoms or methyl groups.

[0120] In general formula (II), Q1, Q2, Q3 and Q4 independently represent alkyl groups having 1 to 6 carbon atoms, and R11 and R12 represent methyl groups.

[0121] In general formula (I) and general formula (II), y is an integer greater than or equal to 1, n1 and n2 independently represent integers from 0 to 2, and m1, m2, m3 and m4 independently represent integers from 0 to 3.

[0122] In general formulas (I) and (II), y is preferably an integer of 1, 2 or 3, and more preferably 1.

[0123] In a preferred embodiment of general formula (I), m1, m2, m3, m4, n1, and n2 are 0, R13 and R14 are methyl groups, and y is 1, 2, or 3. In another preferred embodiment of general formula (I), Q1, Q2, Q3, Q4, R13, and R14 are methyl groups, n1 and n2 are 0, m1, m2, m3, and m4 are 1, 2, or 3, and y is 1, 2, or 3.

[0124] In component (a-3), it is preferable to contain 50 to 100% by mass of an aromatic condensed phosphate ester of formula (I) relative to 100% by mass of component (a-3).

[0125] In a preferred embodiment of general formula (II), m1, m2, m3, m4, n1, and n2 are 0, and y is 1, 2, or 3. In another preferred embodiment of general formula (II), Q1, Q2, Q3, and Q4 are methyl groups, n1 and n2 are 0, m1, m2, m3, and m4 are 1, 2, or 3, and y is 1, 2, or 3.

[0126] In component (a-3), it is preferred to contain 50 to 100% by mass of an aromatic condensed phosphate of formula (II) relative to 100% by mass of component (a-3).

[0127] The acid value of the aromatic condensed phosphate compound is more preferably 0.1 or less (based on the value obtained from JIS K2501).

[0128] ((b) Polyarylate resin ((b) component))

[0129] The resin composition of this embodiment contains (b) polyarylate resin ((b) component).

[0130] In this embodiment, (b) polyarylate resin ((b) component) refers to a polymer whose structural unit contains aromatic rings and ester bonds, and is also known as polyarylate.

[0131] As a polyaryl ester resin, a polyaryl ester having repeating units represented by the following general formula (IV) composed of bisphenol A and terephthalic acid and / or isophthalic acid may be used appropriately.

[0132] [Chemistry 6]

[0133]

[0134] In addition, commercially available products can be used as the polyarylate resin used as component (b), such as the product "U Polymer" manufactured by Unitika.

[0135] As for the molecular weight of (b) the polyaryl ester resin, the number-average molecular weight converted from polystyrene by gel permeation chromatography (GPC) is preferably 5,000 to 300,000, more preferably 10,000 to 300,000, and even more preferably 10,000 to 100,000. When the number-average molecular weight of the polyaryl ester resin is 5,000 or higher, it tends to have good heat resistance of the molded article and improved mechanical strength of the resin; when it is 300,000 or lower, it tends to have good flowability of the resin.

[0136] Regarding the conversion of polystyrene's number-average molecular weight, specifically, it is determined using GPC with chloroform as the solvent at a column temperature of 40°C, based on the detection time-molecular weight curve of standard polystyrene previously measured under the same conditions. At this point, the concentration of the chloroform solution of the polyarylate resin is 1 g / L. Furthermore, regarding the detector, an ultraviolet absorption detector is preferably used for measurement at approximately 280 nm.

[0137] ((c) Elastomer ((c) Components))

[0138] The resin composition of this embodiment may further include (c) an elastomer.

[0139] As a preferred elastomer (c), it is a block copolymer of an aromatic vinyl compound (e.g., styrene) and a conjugated diene compound, and more preferably a hydrogenated block copolymer obtained by hydrogenating the above block copolymer. It should be noted that, as described above, the styrene compounds in the elastomer are not included in component (a-2).

[0140] From the perspective of heat resistance stability, the hydrogenation rate (hydrogenation rate) of the unsaturated bonds from the conjugated diene compound due to hydrogenation is preferably 60% or more, more preferably 80% or more, and even more preferably 95% or more.

[0141] As a block copolymer structure before hydrogenation, if the block copolymer is a block copolymer of styrene and a conjugated diene compound, and the styrene block chain is represented as S and the diene block chain is represented as B, examples include SBS, SBSB, (SB-)4-S, SBSBS, etc.

[0142] Furthermore, the microstructure of the polymer blocks of the conjugated diene compound (the bonding mode of the conjugated diene compound) can be arbitrarily selected. Relative to the overall bonding amount of the conjugated diene compound polymer (the sum of 1,2-vinyl bonds, 3,4-vinyl bonds, and 1,4-conjugated bonds), the vinyl bonding amount of the polymer blocks of the conjugated diene compound (the sum of 1,2-vinyl bonds and 3,4-vinyl bonds) is preferably 2 to 60%, more preferably 8 to 40%.

[0143] (c) The number average molecular weight of component (c) is preferably 100,000 to 400,000, more preferably 150,000 to 350,000, and even more preferably 200,000 to 300,000. When the number average molecular weight of component (c) is 100,000 or higher, it becomes a resin composition with superior impact resistance. Furthermore, when the number average molecular weight of component (c) is 400,000 or lower, it becomes a resin composition with superior flowability.

[0144] Specifically, the number-average molecular weight of polystyrene can be calculated using GPC with chloroform as the solvent, at a column temperature of 40°C, based on the detection time-molecular weight curve of a standard polystyrene previously measured under the same conditions.

[0145] (c) When the component has styrene polymer block chains, it is preferable that the number average molecular weight of at least one styrene polymer block chain is 15,000 or more. More preferably, the number average molecular weight of at least one styrene polymer block chain is 20,000 to 50,000. Furthermore, it is even more preferable that the number average molecular weight of all styrene polymer block chains is 15,000 or more.

[0146] (c) When the component has styrene polymer block chains, as long as the number average molecular weight of the styrene polymer block chains is within the above range, the proportion of the styrene polymer block chains in component (c) is not particularly limited. From the perspective of impact resistance, it is preferably 10 to 70% by mass, more preferably 20 to 50% by mass, and even more preferably 30 to 40% by mass.

[0147] As component (c), two or more hydrogenated block copolymers with different compositions or structures may be used together. Examples include the use of hydrogenated block copolymers with a bonded styrene polymer block content of 50% by mass or more and hydrogenated block copolymers with a bonded styrene polymer block content of 30% by mass or less; the use of hydrogenated block copolymers with different molecular weights; the use of block copolymers of styrene and conjugated diene compounds as described above; and the use of hydrogenated random block copolymers obtained by hydrogenating block copolymers containing random copolymer blocks of styrene and conjugated diene compounds.

[0148] It should be noted that "bonded styrene polymer block content" refers to the proportion of styrene polymer block chains in component (c).

[0149] ((d) compatibilizer ((d) component))

[0150] From the perspective of dispersing component (b) within component (a), the resin composition of this embodiment may further include compatibilizer (d). By including component (d) in the resin composition of this embodiment, a resin composition with superior anti-dripping and impact resistance is obtained.

[0151] Examples of compatibilizers (d) include, but are not limited to, styrene copolymers having glycidyl groups.

[0152] There is no limitation on the type of styrene copolymer containing glycidyl groups; for example, copolymers of unsaturated monomers containing glycidyl groups and styrene monomers can be cited.

[0153] Examples of unsaturated monomers containing a glycidyl group include unsaturated glycidyl esters of carboxylic acids and unsaturated glycidyl ethers. Examples of unsaturated glycidyl esters of carboxylic acids include glycidyl acrylate, glycidyl methacrylate, and itaconic acid monoglycidyl ester. Examples of unsaturated glycidyl ethers include vinyl glycidyl ether, allyl glycidyl ether, 2-methylallyl glycidyl ether, and glycidyl methacrylate ether.

[0154] Examples of styrene monomers include styrene, methylstyrene, dimethylstyrene, and ethylstyrene.

[0155] These styrene copolymers with glycidyl groups can be used alone or in combination of two or more.

[0156] In the above-mentioned styrene copolymers, from the viewpoint of improving the miscibility with component (a), the styrene monomer unit preferably contains 65% by weight or more, more preferably 75% to 95% by weight.

[0157] (Other flame retardants)

[0158] The resin composition of this embodiment may contain various known flame retardants and flame retardant additives. Examples of other flame retardants include phosphonates, alkaline earth metal hydroxides such as magnesium hydroxide, aluminum hydroxide, alkali metal hydroxides, zinc borate compounds, and zinc stannate compounds.

[0159] (additive)

[0160] In order to further impart other properties to the resin composition of this embodiment, additives such as resins other than components (a) and (b), plasticizers, antioxidants and stabilizers such as ultraviolet absorbers, antistatic agents, release agents, dyes, pigments, fillers, reinforcing materials, and spreading agents may be added within a range that does not impair the effects of the present invention.

[0161] (Content of each component)

[0162] In the resin composition of this embodiment, the amounts of component (a-3) and component (b) are 5 to 40 parts by mass and 1 to 12 parts by mass relative to 100 parts by mass of component (a-1) or the total of 100 parts by mass of component (a-1) and component (a-2).

[0163] As a component of component (a), it can be a mixed resin of components (a-1) and (a-2) and component (a-3), or it can be components (a-1) and (a-3).

[0164] (a) In the case of a mixed resin consisting of components (a-1) and (a-2), regarding the amounts of components (a-1) and (a-2), in a total of 100 parts by mass of components (a-1) and (a-2), it is preferable that component (a-1) is 45 to 85 parts by mass and component (a-2) is 15 to 55 parts by mass; more preferably, component (a-1) is 50 to 75 parts by mass and component (a-2) is 25 to 50 parts by mass; even more preferably, component (a-1) is 50 to 70 parts by mass and component (a-2) is 30 to 50 parts by mass. If the amount of component (a-1) is 45 parts by mass or more in a total of 100 parts by mass of components (a-1) and (a-2), it tends to have better anti-dripping properties; if it is 85 parts by mass or less, it tends to have better flowability.

[0165] As described above, the amount of component (a-3) is 5 to 40 parts by mass relative to 100 parts by mass of component (a-1) or the total of 100 parts by mass of components (a-1) and (a-2). The amount of component (a-3) is preferably 10 to 35 parts by mass, more preferably 15 to 30 parts by mass, relative to 100 parts by mass of component (a-1) or the total of 100 parts by mass of components (a-1) and (a-2). If the amount of component (a-3) is 5 parts by mass or more, the resin composition tends to have excellent flame retardancy and flowability; if it is 40 parts by mass or less, the resin composition tends to have even better anti-dripping properties.

[0166] As described above, relative to 100 parts by mass of component (a-1) or 100 parts by mass of the total of components (a-1) and (a-2), the amount of component (b) is 1 to 12 parts by mass. Relative to 100 parts by mass of component (a-1) or 100 parts by mass of the total of components (a-1) and (a-2), the amount of component (b) is preferably 1.5 to 10 parts by mass, more preferably 2 to 8 parts by mass, and even more preferably 2 to 5 parts by mass. If the amount of component (b) is 1 part by mass or more, the resin composition tends to have better anti-dripping properties; if it is 12 parts by mass or less, the resin composition tends to have better flowability and impact resistance.

[0167] Furthermore, considering excellent flame retardancy and anti-dripping properties, in 100 parts by weight of the resin composition of this embodiment, the amount of component (a) is preferably 70 to 99 parts by weight, more preferably 75 to 99 parts by weight, and even more preferably 80 to 99 parts by weight. Additionally, in 100 parts by weight of the resin composition of this embodiment, the total amount of component (a) and component (b) is preferably 70 to 100 parts by weight, more preferably 75 to 100 parts by weight, and even more preferably 80 to 100 parts by weight. By adopting the above-described manner, the content of crystalline resin that easily drips in the temperature range above the melting point can be suppressed, resulting in excellent flame retardancy and anti-dripping properties of the resin composition.

[0168] When component (c) is included, the amount of component (c) is preferably 50 parts by mass or less, more preferably 40 parts by mass or less, and even more preferably 30 parts by mass or less, relative to 100 parts by mass of component (a-1) or the total of 100 parts by mass of components (a-1) and (a-2). If the amount of component (c) is 50 parts by mass or less, the flame retardancy of the resin composition tends to be more superior. When component (c) is included, the total amount of components (a), (b), and (c) in 100 parts by mass of the resin composition of this embodiment is preferably 80 to 100 parts by mass, more preferably 85 to 100 parts by mass, and even more preferably 90 to 100 parts by mass. By adopting the above-described manner, the flame retardancy and anti-dripping properties are excellent.

[0169] When component (d) is included, the amount of component (d) is preferably 8 parts by mass or less, more preferably 5 parts by mass or less, and even more preferably 3 parts by mass or less, relative to 100 parts by mass of component (a-1) or the total of 100 parts by mass of components (a-1) and (a-2). If the amount of component (d) is 8 parts by mass or less, the resin composition tends to have better flowability. When component (d) is included, the total amount of components (a), (b), and (d) in 100 parts by mass of the resin composition of this embodiment is preferably 70 to 100 parts by mass, more preferably 75 to 100 parts by mass, and even more preferably 80 to 100 parts by mass. By adopting the above-described manner, flame retardancy and anti-dripping properties are excellent.

[0170] When components (c) and (d) are included, the total amount of components (a), (b), (c), and (d) in 100 parts by weight of the resin composition of this embodiment is preferably 80 to 100 parts by weight, more preferably 85 to 100 parts by weight, and even more preferably 90 to 100 parts by weight. By configuring it in the above manner, excellent flame retardancy and anti-dripping properties are achieved.

[0171] When other flame retardants are included, from the perspective of flowability and appearance, the amount of other flame retardants is preferably 40 parts by mass or less, more preferably 30 parts by mass or less, and even more preferably 20 parts by mass or less, relative to 100 parts by mass of component (a-1) or the total of 100 parts by mass of components (a-1) and (a-2). If the amount of other flame retardants is 40 parts by mass or less, it tends to have excellent flowability and appearance.

[0172] The total amount of the above-mentioned additives relative to 100% by mass in the resin composition is preferably 15% by mass or less, more preferably 10% by mass or less, and even more preferably 5% by mass or less.

[0173] (Method for manufacturing the resin composition)

[0174] The resin composition of this embodiment can be manufactured, for example, by melt-blending components (a) and (b) and optionally components (c) and (d) using a twin-screw extruder.

[0175] Examples of twin-screw extruders include the "ZSK" series manufactured by Coperon Corporation, the "TEM" series manufactured by Toshiba Machine Corporation, and the "TEX" series manufactured by Nippon Steel.

[0176] The melt mixing temperature and screw speed in the method for manufacturing the resin composition of this embodiment can be appropriately selected from the range of melt mixing temperature of 200 to 370°C and screw speed of 100 to 1200 rpm.

[0177] Examples of feed devices for supplying raw materials to a twin-screw extruder include loss-in-weight feeders, single-screw feeders, twin-screw feeders, benchtop feeders, and rotary feeders. Among these, loss-in-weight feeders are preferred from the perspective of minimizing the variation error in raw material supply.

[0178] When supplying liquid raw materials, a liquid feed pump or similar device can be used in the extruder barrel section to directly feed the liquid raw materials into the barrel system for mixing. The feed pump is not particularly limited; examples include gear pumps and flange pumps. Among these, a gear pump is preferred. Furthermore, it is even more preferable to use a heater or similar device to heat the parts of the liquid raw material flow path, such as the tank pre-stored for the feed pump, the piping between the tank and the pump, and the piping between the pump and the extruder barrel. This reduces the viscosity of the liquid raw material, thus reducing the load applied to the feed pump, which is preferable from an operability perspective.

[0179] (use)

[0180] The resin composition of this embodiment can be used as a material for, for example, electrical and electronic components, home appliances, and OA equipment.

[0181] <Molded Body>

[0182] The molded article of this embodiment comprises the resin composition of this embodiment. Because the molded article of this embodiment comprises the resin composition of this embodiment, it exhibits excellent flame retardancy and anti-dripping properties during combustion.

[0183] A molded article can be prepared by molding the resin composition of this embodiment.

[0184] As for molding methods, known molding methods such as injection molding, blow molding, extrusion molding, sheet molding, and film molding can be used, with injection molding being particularly preferred. As for injection molding machines, examples include the "PS-40" manufactured by Nissei Resin Kogyo Co., Ltd.

[0185] The melting temperature and mold temperature in the molding method of the resin composition of this embodiment can be appropriately selected from the range of melting temperature 150 to 350°C and mold temperature 5 to 150°C.

[0186] Molded parts can be used in various forms and can be applied in a wide range of fields such as industrial components, electrical and electronic components, office equipment housings, automotive parts, and precision components.

[0187] Example

[0188] The present invention will be described in detail below with specific embodiments and comparative examples, but the present invention is not limited to the following embodiments.

[0189] <Ingredients>

[0190] The raw materials used in the resin compositions of the examples and comparative examples are shown below.

[0191] ·(a)Ingredients

[0192] -(a-1)Component-

[0193] (a-1-1): Poly(2,6-dimethyl-1,4-phenylene ether) with a specific viscosity of 0.5 dL / g.

[0194] (a-1-2): Poly(2,6-dimethyl-1,4-phenylene ether) with a specific viscosity of 0.4 dL / g.

[0195] -(a-2)Component-

[0196] (a-2-1): Polystyrene (manufactured by PS Japan, trade name "GPPS 680")

[0197] (a-2-2): Rubber-modified polystyrene (manufactured by Petro Chemicals, trade name "CT60")

[0198] -(a-3)Component-

[0199] (a-3-1): Aromatic condensed phosphate compound (manufactured by Daihachi Chemical Industry, trade name "E890")

[0200] (a-3-2): Aromatic phosphate compounds (manufactured by Daihachi Chemical Industry, trade name: "TPP")

[0201] (a-3-3): Phosphazene compound (manufactured by Fushimi Pharmaceutical, trade name: "Rabitle FP-110")

[0202] • (b) Components

[0203] Polyaryl ester resin (manufactured by Unitika, trade name "U Polymer")

[0204] • (c) Components

[0205] Hydrogenated block copolymer (manufactured by TSRC, trade name "TAIPOL6151")

[0206] ·(d) Components

[0207] Styrene-based glycidyl methacrylate (manufactured by Nippon Yu Co., Ltd., trade name "Marproof G-1005S")

[0208] The apparatus used in the embodiments is shown below.

[0209] Twin-screw extruder: Manufactured by Coperion, trade name "ZSK-25WLE"

[0210] Small injection molding machine: Manufactured by TOSHIBA MACHINE, "EC75SXII"; manufactured by Nissei Resin Kogyo, trade name "PS-40".

[0211] <Evaluation Methods>

[0212] The resin compositions obtained in the examples and comparative examples were evaluated using the methods and conditions described below.

[0213] ((a-1) number average molecular weight)

[0214] The granules of the resin compositions obtained in the examples and comparative examples were determined using a gel permeation chromatography (LC-2030C Plus, manufactured by Shimadzu Corporation). Calibration curves were prepared using standard polystyrene and ethylbenzene, and the number-average molecular weight (Mn) was determined using these calibration curves. Polystyrene with molecular weights of 3,650,000, 2,170,000, 1,090,000, 681,000, 204,000, 52,000, 30,200, 13,800, 3,360, 1,300, and 550 were used as standard polystyrene. A column consisting of two K-805L columns manufactured by Showa Denko Corporation connected in series was used. Chloroform was used as the solvent, and the determination was performed at a solvent flow rate of 1.0 mL / min and a column temperature of 40°C. A 1 g / L chloroform solution was prepared and used as the test sample. Regarding the wavelength of the UV in the detection section, it is set to 254nm when measuring standard polystyrene, and to 283nm when measuring component (a-1).

[0215] ((a) Glass transition temperature of the composition)

[0216] The resin composition granules obtained in the examples and comparative examples were measured using a DSC measuring instrument manufactured by Perkin Elmer. The glass transition temperature was determined by heating from 50°C to 300°C at a heating rate of 20°C per minute in a nitrogen atmosphere, then cooling to 50°C at a heating rate of 20°C per minute, and then heating back up at a heating rate of 20°C per minute.

[0217] (Molding Flowability)

[0218] Molding fluidity is evaluated by measuring the melt flow rate.

[0219] After pre-drying the resin composition granules obtained in the examples and comparative examples at 80°C for 1 hour, the melt flow rate (MFR) (g / 10 min) was measured at 250°C and 10 kg according to ISO 1133. The higher the measured value, the better the molding fluidity.

[0220] (Impact resistance)

[0221] Impact resistance is evaluated by measuring the impact strength of the chapped metal.

[0222] The resin compositions obtained in the examples and comparative examples were fed into a coaxial screw-type injection molding machine (manufactured by TOSHIBA MACHINE, “EC75SXII”) set at 220–280°C, and injection molded at a mold temperature of 60–80°C, thereby producing test pieces of the dimensions specified by the ISO-179 standard.

[0223] Using this test piece, the chevron impact strength (kJ / m²) was determined according to ISO-179 using a notched method. 2 The higher the measured value, the better the impact resistance. For example, 10 kJ / m... 2 The above exhibit excellent impact resistance.

[0224] (Flame retardancy and anti-dripping properties)

[0225] Flame retardancy and anti-dripping properties were evaluated using injection-molded test pieces with a thickness of 1.5–3.0 mm based on the UL94-5V test (long strip sample).

[0226] The resin composition granules obtained in the examples and comparative examples were dried at 80°C for 1 hour. Using the dried granules, they were fed into a coaxial screw-type injection molding machine (manufactured by Nissei Resin Kogyo, trade name "PS-40") set at 185 to 300°C, and injection molded at a mold temperature of 20 to 40°C, thereby producing strip samples with dimensions (length 125 mm × width 13 mm × thickness 1.5 to 3.0 mm) as specified in this standard.

[0227] It should be noted that higher fluidity and thinner strip samples are more prone to dripping; therefore, the thickness of the strip sample needs to be adjusted to accommodate increased fluidity. The thickness of the strip sample is as follows: 2.0 mm for samples with an MFR (g / 10min) less than 20 g / 10min, 2.5 mm for samples with an MFR (g / 10min) greater than 20 g / 10min but less than 35 g / 10min, and 3.0 mm for samples with an MFR (g / 10min) greater than 35 g / 10min.

[0228] The test pieces were brought into contact with a gas lamp flame, and the degree of combustion was evaluated. Five strip samples were tested to determine whether they passed the test. A summary of the pass / fail criteria is shown below.

[0229] Acceptable: In all 5 strip samples, the total burning time and luminescence time after the 5th contact with the flame were less than 60 seconds, and no degreased cotton ignited due to detached material from the strip sample.

[0230] Non-compliant: A fire occurred in the absorbent cotton due to detachment from the bar sample.

[0231] <Preparation of Resin Compositions>

[0232] (Examples 1-10 and Comparative Examples 1-8)

[0233] Components (a) to (d) were fed into a twin-screw extruder with the compositions shown in Table 1 or Table 2, and melt-blended at an extrusion temperature of 280–320°C, a screw speed of 300 rpm, and a discharge rate of 15 kg / h to obtain granules of the resin compositions of each example and comparative example. The twin-screw extruder was configured as follows: it had 12 barrel sections, with an upstream feed port in the first barrel, a liquid pump in the seventh barrel, and vacuum exhaust ports in the fifth and eleventh barrels, starting from the upstream of the feed material flow direction.

[0234] It should be noted that only component (a-3-1) of components (a), (b), (c) and (d) is supplied from the dispensing pump, and the others are supplied from the upstream supply port.

[0235] The composition and evaluation results of the resin compositions prepared for each example and comparative example are shown in Tables 1 and 2.

[0236]

[0237]

[0238] As can be seen from the above, the resin compositions of Examples 1 to 10 have excellent flame retardancy, anti-dripping properties during combustion, and flowability. The resin compositions of this embodiment can be molded into molded articles with excellent flame retardancy and anti-dripping properties during combustion.

[0239] Industrial applicability

[0240] The resin composition of the present invention can be used as a material for electrical and electronic components, home appliances, OA equipment, etc.

Claims

1. A resin composition comprising: (a)(a-1) polyphenylene ether resin, (a-2) styrene resin and (a-3) one or more compounds selected from phosphate ester compounds and phosphazene compounds; Or (a-1) a polyphenylene ether resin and (a-3) one or more compounds selected from phosphate ester compounds and phosphazene compounds; as well as (b) Polyarylate resin, The number-average molecular weight of component (a-1) is 1.5 × 10⁻⁶. 4 ~2.5×10 4 , The glass transition temperature of component (a) is 100℃~145℃. Relative to 100 parts by mass of component (a-1), or 100 parts by mass of the total of components (a-1) and (a-2), The amount of component (a-3) is 5 to 40 parts by mass. The amount of component (b) is 1 to 12 parts by mass.

2. The resin composition according to claim 1, wherein, In the case where (a) includes component (a-1) and component (a-2), In a total of 100 parts by mass of component (a-1) and component (a-2), The amount of component (a-1) is 45 to 85 parts by mass. The amount of component (a-2) is 15 to 55 parts by mass. The amount of component (a-3) is 10 to 35 parts by mass relative to the total of 100 parts by mass of component (a-1) and component (a-2).

3. The resin composition according to claim 1 or 2, wherein, The (a-3) component is a phosphate ester compound represented by the following general formula (I) or general formula (II). [Chemistry 1] [Chemistry 2] In general formula (I), Q1, Q2, Q3 and Q4 independently represent alkyl groups having 1 to 6 carbon atoms, R11 and R12 represent methyl groups, and R13 and R14 independently represent hydrogen atoms or methyl groups; In general formula (II), Q1, Q2, Q3 and Q4 independently represent alkyl groups having 1 to 6 carbon atoms, and R11 and R12 represent methyl groups; In general formula (I) and general formula (II), y is an integer greater than or equal to 1, n1 and n2 independently represent integers from 0 to 2, and m1, m2, m3 and m4 independently represent integers from 0 to 3.

4. The resin composition of claim 1 or 2, further comprising (c) an elastomer.

5. The resin composition of claim 1 or 2, further comprising (d) a compatibilizer.

6. The resin composition according to claim 1 or 2, wherein, According to ISO 1133, the melt flow rate measured at a temperature of 250°C and a load of 10 kg is greater than 10 g / 10 min.

7. The resin composition according to claim 1 or 2, wherein, In 100 parts by weight of the resin composition, the amount of component (a) is 70 to 99 parts by weight.

8. The resin composition according to claim 1 or 2, wherein, In 100 parts by weight of the resin composition, the total amount of component (a) and component (b) is 70 to 100 parts by weight.

9. A molded article comprising the resin composition of claim 1 or 2.

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