JP6243795B2 - Molded body containing flame retardant resin composition - Google Patents

Description

  The present invention relates to a molded article containing a flame retardant resin composition.

  Although polypropylene has excellent properties such as molding processability, water resistance, oil resistance, acid resistance, and alkali resistance, it has drawbacks inferior in heat resistance and rigidity. As a method for improving the drawback, it is known to blend polypropylene and polyphenylene ether to obtain a resin composition having improved properties. Furthermore, in order to impart flame retardancy to this resin composition, flame retarding techniques such as adding a halogen-based compound and antimony trioxide have been conventionally used. However, flame retardants such as the above halogen compounds and antimony trioxide are not preferable for environmental hygiene, so improvement of the flame retardant method is required, and flame retardants containing no halogen compounds or antimony trioxide were used. Flame retardant methods are being studied.

  In order to solve the above problem, for example, Patent Documents 1 to 3 suggest that a polypropylene-based resin and a polyphenylene ether-based resin are mixed with a phosphorus-based flame retardant such as a phosphinic acid metal salt or a condensed phosphate ester. ing. In particular, Patent Document 2 proposes blending a mixture of a metal dialkylphosphinate, a melamine phosphate, and a liquid triaryl phosphate.

Special table 2010-540716 International Publication No. 2011/129129 Pamphlet JP 2013-14691 A

  However, in the techniques described in Patent Documents 1 to 3 above, flame retardance sufficient for practical use is imparted to a resin composition composed of a polypropylene resin and a polyphenylene ether resin while maintaining long-term mechanical properties such as creep properties. In the present situation, it cannot be used for applications that require both long-term mechanical properties and flame retardancy at a high level. Furthermore, in the composition using a plurality of flame retardants at the same time, there is a problem that it is difficult to obtain the dimensional accuracy of the molded product.

  This invention is made | formed in view of the subject which said prior art has, and it aims at providing the molded object which is excellent in the balance of a flame retardance and a creep characteristic, and is excellent also in dimensional accuracy.

  As a result of intensive studies to solve the above problems, the inventors of the present invention include a resin composition containing at least a polyphenylene ether resin, a polypropylene resin, and a metal phosphinate, and the amount of hydroxyl groups of the polyphenylene ether resin and the metal phosphinic acid. It has been found that a molded product satisfying a specific relationship with the number average particle diameter of the salt can solve the above-mentioned problems, and has completed the present invention.

That is, the present invention is as follows.
[1] A molded article comprising a resin composition containing a polyphenylene ether resin (I), a polypropylene resin (II), and a metal phosphinate (III) represented by the following general formula (1): ,
When the number of hydroxyl groups per 100 units of the monomer of the polyphenylene ether resin (I) in the molded body is X and the number average particle diameter of the metal phosphinate (III) is Y μm, the value of Y / X is A molded product that is 1.5 or more and 15 or less.

(In formula (1), R ¹ and R ² are each independently a linear or branched alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 10 carbon atoms, and M is (It is 1 or more types chosen from the group which consists of calcium, magnesium, aluminum, zinc, bismuth, manganese, sodium, potassium, and the protonated nitrogen base, and m is 1-3.)
[2] The molded article according to [1], wherein the Y / X value is 2 or more and 7 or less.
[3] The resin composition is a conjugated diene in which the polymer block P mainly composed of a vinyl aromatic compound, and the total amount of 1,2-vinyl bonds and 3,4-vinyl bonds is 30 to 90%. The block according to [1] or [2], further comprising a hydrogenated block copolymer resin (IV) in which at least a part of a block copolymer including a polymer block Q mainly composed of a compound is hydrogenated. Molded body.
[4] The mass ratio (I) / (II) between the polyphenylene ether resin (I) and the polypropylene resin (II) is 20/80 to 80/20, according to any one of [1] to [3]. Molded body.
[5] The content of the metal phosphinate (III) is 1 to 30 parts by mass with respect to 100 parts by mass in total of the polyphenylene ether resin (I) and the polypropylene resin (II). [4] The molded article according to any one of the above.
[6] The content of the hydrogenated block copolymer resin (IV) is 1 to 30 parts by mass with respect to 100 parts by mass in total of the components (I) and (II). ] The molded object in any one of.
[7] The molded article according to any one of [1] to [6], further containing a fibrous and / or plate-like inorganic filler (V).

  ADVANTAGE OF THE INVENTION According to this invention, the molded object which is excellent in the balance of a flame retardance and a creep characteristic and is excellent also in dimensional accuracy can be obtained.

FIG. 1 is a simplified front view of a creep characteristic measuring test piece used in the examples.

  Hereinafter, a mode for carrying out the present invention (hereinafter simply referred to as “the present embodiment”) will be described in detail. The present invention is not limited to the following embodiments, and various modifications can be made within the scope of the gist.

  The molded product of this embodiment includes a resin composition containing polyphenylene ether resin (I), polypropylene resin (II), and metal phosphinate (III) represented by the following general formula (1). When the number of hydroxyl groups per 100 units of the polyphenylene ether resin (I) monomer in the molded body is X and the number average particle diameter of the metal phosphinate (III) is Y μm in the molded body, The value of Y / X is 1.5 or more and 15 or less.

(In formula (1), R ¹ and R ² are each independently a linear or branched alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 10 carbon atoms, and M is (It is 1 or more types chosen from the group which consists of calcium, magnesium, aluminum, zinc, bismuth, manganese, sodium, potassium, and the protonated nitrogen base, and m is 1-3.)

  Since it is comprised as mentioned above, the molded object of this embodiment will be excellent in the balance of a flame retardance and a creep characteristic, and will also be excellent in dimensional accuracy.

[1. Resin composition]
<Polyphenylene ether resin (I)>
Although it does not specifically limit as polyphenylene ether resin (I) (henceforth "component (I)") contained in the resin composition in this embodiment, For example, polyphenylene ether, modified polyphenylene ether, and mixture of both Is mentioned. Component (I) may be used alone or in combination of two or more.

  The reduced viscosity (ηsp / c: 0.5 g / dL chloroform solution at 30 ° C.) of component (I) is preferably in the range of 0.25 to 0.45, more preferably 0.25 to 0. .36 range.

(Polyphenylene ether)
Examples of polyphenylene ether include, but are not limited to, a homopolymer having a repeating unit structure represented by the following general formula (2) or a copolymer having a repeating unit structure represented by the following general formula (2). Is mentioned.

In formula (2), R ¹ , R ² , R ³ , and R ⁴ each independently represent a hydrogen atom, a halogen atom, a primary or secondary alkyl group having 1 to 7 carbon atoms, or a phenyl group. , A haloalkyl group, an aminoalkyl group, a hydrocarbonoxy group, and a halohydrocarbonoxy group in which at least two carbon atoms separate a halogen atom and an oxygen atom.

  Such polyphenylene ether is not particularly limited, and known ones can be used. Specific examples thereof include 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), poly (2,6-dichloro-1,4-phenylene ether) and other homopolymers; 2,6-dimethylphenol and 2,3,6-trimethylphenol and 2-methyl- Examples include copolymers with other phenols such as 6-butylphenol. Among these, poly (2,6-dimethyl-1,4-phenylene ether) and a copolymer of 2,6-dimethylphenol and 2,3,6-trimethylphenol are preferable, and poly (2, 2,6-dimethyl-1,4-phenylene ether).

  The method for producing polyphenylene ether is not particularly limited, and a conventionally known method can be used. Specific examples thereof include a method of using a complex of cuprous salt and an amine as a catalyst and, for example, producing it by oxidative polymerization of 2,6-xylenol (see US Pat. No. 3,306,874). Alternatively, U.S. Pat. No. 3,306,875, U.S. Pat. No. 3,257,357, U.S. Pat. No. 3,257,358, JP-B-52-17880, JP-A-50-51197, JP-A-63-152628. The method described in the gazette etc. can be used.

(Modified polyphenylene ether)
Although it does not specifically limit as modified polyphenylene ether, For example, what grafted or added the styrene-type monomer or its derivative (s) to said polyphenylene ether is mentioned. The ratio of grafting or addition is not particularly limited, but is preferably 0.01 to 10% by mass, more preferably 0.01 to 7% by mass, and still more preferably 0, based on the total amount of the modified polyphenylene ether. 0.01 to 5% by mass.

  The method for producing the modified polyphenylene ether is not particularly limited. For example, in the presence or absence of a radical generator, in the molten state, the solution state or the slurry state, at 80 to 350 ° C., the above polyphenylene ether, Examples include a method of reacting a styrene monomer or a derivative thereof.

(Mixture of polyphenylene ether and modified polyphenylene ether)
When a mixture of polyphenylene ether and modified polyphenylene ether is used, the mixing ratio of the above polyphenylene ether and modified polyphenylene ether is not limited and can be mixed at an arbitrary ratio.

<Polypropylene resin (II)>
Although it does not specifically limit as polypropylene resin (II) (henceforth "component (II)") contained in the resin composition in this embodiment, For example, a polypropylene, a modified polypropylene, and a mixture of both are mentioned. . Component (II) may be used alone or in combination of two or more.

  The melt flow rate (hereinafter also referred to as “MFR”) of the component (II) is preferably 0.1 to 100 g / 10 minutes, more preferably 0.1 to 80 g / 10 minutes, and still more preferably. 0.5 to 50 g / 10 min. When the MFR is within the above range, a molded product superior in dimensional accuracy and creep characteristics tends to be obtained. In addition, MFR can be measured on condition of 230 degreeC and load 2.16kg based on ISO1133.

(polypropylene)
Although it does not specifically limit as a polypropylene which can be used by this embodiment, For example, the homopolymer or copolymer which makes propylene a repeating unit structure is mentioned. Among these, a crystalline propylene homopolymer, a crystalline propylene-ethylene block copolymer, or a mixture of a crystalline propylene homopolymer and a crystalline propylene-ethylene block copolymer is preferable. In addition, a polypropylene may be used individually by 1 type and may use 2 or more types together.

  The crystalline propylene-ethylene block copolymer is not particularly limited, and examples thereof include those having a crystalline propylene homopolymer portion and a propylene-ethylene random copolymer portion. The ethylene content of the crystalline propylene-ethylene block copolymer is preferably 0.1 to 70% by mass.

  It does not specifically limit as a manufacturing method of a polypropylene, A well-known method can be used. Specific examples thereof include a titanium trichloride catalyst or a titanium halide catalyst supported on a carrier such as magnesium chloride, and an alkylaluminum compound in the presence of a polymerization temperature of 0 to 100 ° C. and a polymerization pressure of 3 A method of polymerizing propylene at -100 atm. At this time, a chain transfer agent such as hydrogen can be added in order to adjust the molecular weight of the polymer. As a polymerization method, either a batch method or a continuous method may be used. The polymerization method is not particularly limited, and for example, a solution polymerization in a solvent such as butane, pentane, hexane, heptane, octane, or a slurry polymerization method can be selected. Furthermore, bulk polymerization in a monomer without solvent A gas phase polymerization method in a gaseous monomer can be applied.

  In addition to the polymerization catalyst described above, an electron donating compound can be used as an internal donor component or an external donor component as the third component in order to increase the isotacticity and polymerization activity of the resulting polypropylene. As these electron donating compounds, known compounds can be used and are not limited to the following, but include, for example, ester compounds such as ε-caprolactone, methyl methacrylate, ethyl benzoate, methyl toluate; triphenyl phosphite, Phosphorous acid esters such as tributyl phosphate; phosphoric acid derivatives such as hexamethylphosphoric triamide; alkoxy ester compounds; aromatic monocarboxylic acid esters; aromatic alkyl alkoxy silanes; aliphatic hydrocarbon alkoxy silanes; Various alcohols; various phenols.

  Among the above, the production method of the crystalline propylene-ethylene block copolymer is not particularly limited. For example, the first step of polymerization for obtaining a crystalline propylene homopolymer portion, ethylene, and other as necessary and a second step of polymerization in which an α-olefin is copolymerized to obtain a propylene-ethylene random copolymer portion connected to a crystalline propylene homopolymer portion. Here, the other α-olefin is not particularly limited, and examples thereof include propylene, 1-butene, 1-hexene and the like.

(Modified polypropylene)
The modified polypropylene is not particularly limited, and examples thereof include those obtained by grafting or adding the above-described polypropylene with an α, β-unsaturated carboxylic acid or a derivative thereof (including an acid anhydride or an ester). The ratio of grafting or addition is not particularly limited, but is preferably 0.01 to 10% by mass, more preferably 0.01 to 7% by mass, and still more preferably 0.00%, based on the total amount of the modified polypropylene. 01 to 5% by mass.

  Although it does not specifically limit as a manufacturing method of modified polypropylene, For example, the above-mentioned polypropylene and α, in the presence of a radical generator, in the absence, in a molten state, a solution state, and a slurry state at a temperature of 30 to 350 ° C. Examples include a method of reacting a β-unsaturated carboxylic acid or a derivative thereof.

(Mixture of polypropylene and modified polypropylene)
When a mixture of polypropylene and modified polypropylene is used, the mixing ratio of the above-mentioned polypropylene and modified polypropylene is not limited and can be mixed at an arbitrary ratio.

  The mass ratio (I) / (II) of the polyphenylene ether resin (I) and the polypropylene resin (II) is preferably 20/80 to 80/20, more preferably 30/70 to 80/20. Even more preferably, it is 40/60 to 80/20. When the content of the component (II) is within the above range, a molded product excellent in dimensional accuracy and creep characteristics tends to be obtained.

<Metal phosphinate (III)>
The metal phosphinate (III) (hereinafter also referred to as “component (III)”) used in the present embodiment is a compound represented by the following general formula (1).

(In formula (1), R ¹ and R ² are each independently a linear or branched alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 10 carbon atoms, and M is (It is 1 or more types chosen from the group which consists of calcium, magnesium, aluminum, zinc, bismuth, manganese, sodium, potassium, and the protonated nitrogen base, and m is 1-3.)

  Specific examples of metal phosphinates include, but are not limited to, calcium dimethylphosphinate, magnesium dimethylphosphinate, aluminum dimethylphosphinate, zinc dimethylphosphinate, calcium ethylmethylphosphinate, magnesium ethylmethylphosphinate, ethylmethyl Aluminum phosphinate, zinc ethylmethylphosphinate, calcium diethylphosphinate, magnesium diethylphosphinate, aluminum diethylphosphinate, zinc diethylphosphinate, calcium methyl-n-propylphosphinate, methyl-n-propylphosphinate, methyl- Aluminum n-propylphosphinate, zinc methyl-n-propylphosphinate, calcium methylphenylphosphinate, methyl Examples include magnesium phenylphosphinate, aluminum methylphenylphosphinate, zinc methylphenylphosphinate, calcium diphenylphosphinate, magnesium diphenylphosphinate, aluminum diphenylphosphinate, zinc diphenylphosphinate, preferably calcium dimethylphosphinate, dimethylphosphine Aluminum oxide, zinc dimethylphosphinate, calcium ethylmethylphosphinate, aluminum ethylmethylphosphinate, zinc ethylmethylphosphinate, calcium diethylphosphinate, aluminum diethylphosphinate and zinc diethylphosphinate, more preferably aluminum diethylphosphinate It is.

  The content of the metal phosphinate (III) is preferably 1 to 30 parts by mass, more preferably 3 to 25 parts by mass with respect to 100 parts by mass in total of the components (I) and (II). More preferably, it is 5-20 mass parts. When the content of component (III) is 1 part by mass or more, it tends to be more excellent in flame retardancy. Moreover, when content of component (III) is 30 mass parts or less, it exists in the tendency which is excellent by a creep characteristic and dimensional accuracy.

<Hydrogenated block copolymer resin (IV)>
The resin composition constituting the molded body of the present embodiment preferably further contains a hydrogenated block copolymer resin (IV) (hereinafter also referred to as “component (IV)”). Component (IV) acts as at least one of an admixture or an impact resistance imparting agent of component (I) and component (II). Although it does not specifically limit as component (IV), For example, a hydrogenated block copolymer, a modified | denatured hydrogenated block copolymer, and a mixture of both are mentioned. Component (IV) may be used alone or in combination of two or more.

(Hydrogenated block copolymer)
Hydrogenated block copolymer is a conjugated diene compound having a polymer block P mainly composed of a vinyl aromatic compound and a total amount of 1,2-vinyl bonds and 3,4-vinyl bonds of 30 to 90%. And at least a part of a block copolymer containing a polymer block Q mainly composed of Here, “the total amount of 1,2-vinyl bond amount and 3,4-vinyl bond amount” means 1,2-vinyl bond amount, 3,4-vinyl bond amount, and 1,4-conjugated bond. The ratio of the total amount of 1,2-vinyl bond amount and 3,4-vinyl bond amount to the total amount.

(Polymer block P)
Although it does not specifically limit as polymer block P, For example, the homopolymer block of a vinyl aromatic compound or the copolymer block of a vinyl aromatic compound and a conjugated diene compound is mentioned. In the polymer block P, “mainly composed of a vinyl aromatic compound” means that the polymer block P contains a vinyl aromatic compound in an amount exceeding 50 mass%. The content of the vinyl aromatic compound in the polymer block P is preferably 70% by mass or more, more preferably 80% by mass or more. Although the upper limit of content of the vinyl aromatic compound in the polymer block P is not specifically limited, Preferably it is 100 mass%.

  Although it does not specifically limit as a vinyl aromatic compound which comprises the polymer block P, For example, styrene, (alpha) -methylstyrene, vinyltoluene, p-tert-butylstyrene, diphenylethylene etc. are mentioned. Of these, styrene is preferable. The vinyl aromatic compound which comprises the polymer block P may be used individually by 1 type, and may use 2 or more types. The number average molecular weight of the polymer block P is not particularly limited, but is preferably 15,000 or more, more preferably 20,000 or more, and further preferably 25,000 or more. Moreover, the upper limit of the number average molecular weight of the polymer block P is not particularly limited, but is preferably 100,000 or less. When the number average molecular weight is in the preferred range, the creep characteristics of the molded product of the present embodiment tend to be further improved. The number average molecular weight of the polymer block P can be measured by GPC (moving layer: chloroform, standard material: polystyrene).

(Polymer block Q)
Although it does not specifically limit as the polymer block Q, For example, the homopolymer block of a conjugated diene compound or the random copolymer block of a conjugated diene compound and a vinyl aromatic compound is mentioned. The phrase “consisting mainly of a conjugated diene compound” in the polymer block Q means that the polymer block Q contains a conjugated diene compound in an amount exceeding 50 mass%. From the viewpoint of fluidity, the content of the conjugated diene compound in the polymer block Q is preferably 70% by mass or more, and more preferably 80% by mass or more. The upper limit of the content of the conjugated diene compound in the polymer block Q is not particularly limited, but is preferably 100% by mass.

  The conjugated diene compound constituting the polymer block Q is not particularly limited, and examples thereof include butadiene, isoprene, 1,3-pentadiene, 2,3-dimethyl-1,3-butadiene and the like. Of these, butadiene, isoprene and a combination thereof are preferable, and butadiene is more preferable. The conjugated diene compound constituting the polymer block Q may be used alone or in combination of two or more.

  In the microstructure of the polymer block Q (bonded form of conjugated diene compound), the total amount of 1,2-vinyl bonds and 3,4-vinyl bonds (hereinafter also referred to as “total vinyl bond amount”) is as follows. It is 30 to 90%, preferably 45 to 90%, more preferably 65 to 90%. When the total vinyl bond content of the conjugated diene compound in the polymer block Q is within the above range, the compatibility with the component (II) tends to be more excellent. In particular, when the polymer block Q is a polymer mainly composed of butadiene, the total vinyl bond content of butadiene in the polymer block Q is preferably 65 to 90%. When the total vinyl bond content of the conjugated diene compound in the polymer block Q is 30% or more, the dispersibility of the component (I) dispersed in the resulting resin composition tends to be further improved. In addition, since the total vinyl bond content of the conjugated diene compound in the polymer block Q is 90% or less, the dispersibility of the component (I) tends to be further improved, and the resin composition is more economical. There is a tendency to obtain a molded product.

  In the present embodiment, the total vinyl bond amount can be measured by an infrared spectrophotometer. The total vinyl bond amount was calculated using Analytical Chemistry, Volume 21, No. 8, according to the method described in August 1949.

(Block copolymer)
It is preferable that a hydrogenated block copolymer obtained by hydrogenating at least a part of a block copolymer containing at least the polymer block P and at least the polymer block Q is used as the component (IV).

When the polymer block P is “P” and the polymer block Q is “Q”, the component (IV) is not particularly limited. For example, PQ, PQP, QPQ Examples thereof include hydrogenated products of vinyl aromatic compound-conjugated diene compound block copolymers having a structure such as -P, (PQ-) ₄ M, and PQQPQP. (PQ) ₄ M is a reaction residue of a polyfunctional coupling agent such as silicon tetrachloride (when M = Si), tin tetrachloride (when M = Sn), or a polyfunctional organolithium compound A structure including a residue of an initiator such as

  The molecular structure of the block copolymer including the polymer block P and the polymer block Q is not particularly limited, and may be, for example, linear, branched, radial, or any combination thereof.

  In the polymer block P and the polymer block Q, the distribution of the vinyl aromatic compound or the conjugated diene compound in the molecular chain in each polymer block is random and tapered (in which the monomer component increases or decreases along the molecular chain). , May be partially block-shaped or any combination thereof. And when there are two or more polymer blocks P or polymer blocks Q in the repeating unit, each polymer block may have the same structure or a different structure.

  Content of the vinyl aromatic compound in the block copolymer before hydrogenation of component (IV) becomes like this. Preferably it is 20-95 mass%, More preferably, it is 30-80 mass%. In the present embodiment, the content of the vinyl aromatic compound can be measured with an ultraviolet spectrophotometer.

  The number average molecular weight of the block copolymer before hydrogenation is preferably 5,000 to 1,000,000, more preferably 10,000 to 800,000, and still more preferably 30,000 to 500,000. 000. The number average molecular weight of the block copolymer before hydrogenation can be measured by gel permeation chromatography (GPC, solvent: chloroform, standard material: polystyrene).

  The molecular weight distribution of the block copolymer before hydrogenation is preferably 10 or less, more preferably 8 or less, and further preferably 5 or less. The molecular weight distribution of the block copolymer before hydrogenation is the ratio of the weight average molecular weight (Mw) and the number average molecular weight (Mn) measured by gel permeation chromatography (GPC, solvent: chloroform, standard material: polystyrene) ( Mw / Mn).

(Hydrogenated block copolymer)
The hydrogenation rate with respect to the conjugated diene compound in component (IV) is not particularly limited, but from the viewpoint of heat resistance, it is preferably 50% or more with respect to the total amount of double bonds derived from the conjugated diene compound. Preferably it is 80% or more, More preferably, it is 90% or more. The hydrogenation rate with respect to the conjugated diene compound can be measured by NMR.

  It does not specifically limit as a manufacturing method of component (IV), A well-known manufacturing method can be used. Known production methods include, for example, JP-A-47-11486, JP-A-49-66743, JP-A-50-75651, JP-A-54-126255, JP-A-56- No. 10542, JP-A-56-62847, JP-A-56-1000084, JP-A-2-300218, British Patent 1130770, US Pat. No. 3,281,383, US Pat. No. 3639517 No. 1, British Patent No. 1020720, US Pat. No. 3,333,024 and US Pat. No. 4,501,857 can be used.

(Modified hydrogenated block copolymer)
The modified hydrogenated block copolymer is obtained by grafting or adding an α, β-unsaturated carboxylic acid or a derivative thereof (an ester compound or an acid anhydride compound) to the above-described hydrogenated block copolymer. The modified hydrogenated block copolymer is a molten state, solution state or slurry state in the presence or absence of a radical generator, at 80 to 350 ° C., and the above-described hydrogenated block copolymer, α, β- It can be obtained by reacting an unsaturated carboxylic acid and / or a derivative thereof. The ratio of grafting or addition of the α, β-unsaturated carboxylic acid or derivative thereof is not particularly limited, but is preferably 0.01 to 10% by mass, more preferably based on the total amount of the hydrogenated block copolymer. Is 0.01-7 mass%, More preferably, it is 0.01-5 mass%. Component (IV) may be a mixture in any proportion of the hydrogenated block copolymer and the modified hydrogenated block copolymer.

  Further, the content of the component (IV) in the molded body of the present embodiment is preferably from the viewpoint of further improving the dimensional accuracy and creep characteristics, with respect to a total of 100 parts by mass of the component (I) and the component (II). It is 1-30 mass parts, More preferably, it is 2-20 mass parts, More preferably, it is 3-15 mass parts.

<Filler (V)>
The resin composition constituting the molded body of the present embodiment is also referred to as a fibrous and / or plate-like filler (V) (hereinafter referred to as “component (V)”) from the viewpoint of further improving dimensional accuracy and creep characteristics. ). Component (V) is not particularly limited, and examples thereof include fibrous fillers such as glass fibers, carbon fibers, polyacrylonitrile fibers, and metal fibers; and plate-like fillers such as talc, mica, and clay. The content of the component (V) is preferably 0.1 to 200 parts by mass with respect to 100 parts by mass of the total amount of the component (I) and the component (II) from the viewpoint of further improving the dimensional accuracy and creep characteristics. Preferably it is 0.5-100 mass parts.

<Phosphate ester compound (VI)>
Furthermore, the resin composition constituting the molded body of the present embodiment further includes a phosphate ester compound (VI) (hereinafter also referred to as “component (VI)”) from the viewpoint of further improving flame retardancy. Can do. As the component (VI), any phosphoric acid ester compound effective for improving flame retardancy can be used, and examples thereof include, but are not limited to, triphenyl phosphate, phenyl bisdodecyl phosphate, phenyl bisneopentyl phosphate, and phenyl-bis. (3,5,5'-trimethyl-hexyl phosphate), ethyl diphenyl phosphate, 2-ethyl-hexyl di (p-tolyl) phosphate, bis- (2-ethylhexyl) p-tolyl phosphate, tolyl phosphate, bis- (2 -Ethylhexyl) phenyl phosphate, tri- (nonylphenyl) phosphate, di (dodecyl) p-tolyl phosphate, tricresyl phosphate, dibutylphenyl phosphate, 2-chloroethyldiphenyl phosphate, p-tolylbis (2 , 5,5′-trimethylhexyl) phosphate, 2-ethylhexyl diphenyl phosphate, bisphenol A-bis (diphenyl phosphate), diphenyl- (3-hydroxyphenyl) phosphate, bisphenol A-bis (dicresyl phosphate), resorcin-bis ( Diphenyl phosphate), resorcin-bis (dixylenyl phosphate), 2-naphthyl diphenyl phosphate, 1-naphthyl diphenyl phosphate, di (2-naphthyl) phenyl phosphate, and the like.

  In particular, the component (VI) is more preferably composed mainly of at least one selected from the group consisting of condensed phosphate compounds represented by the following general formula (3) or the following general formula (4). Here, “main component” means to occupy 50 mass% or more with respect to the total mass of the component (VI), and more preferably 80 mass% or more.

In the formula, Q ¹ , Q ² , Q ³ and Q ⁴ are all substituents and each independently represents an alkyl group having 1 to 6 carbon atoms. R ⁵ and R ⁶ are both substituents and represent a methyl group. R ⁷ and R ⁸ each independently represents a hydrogen atom or a methyl group. n has an integer of 0 or more, n ¹ and n ² each independently represents an integer of 0 to 2, and m ¹ , m ² , m ³ and m ⁴ each independently represents an integer of 0 to 3 Show.

  The condensed phosphate compounds represented by the above formulas (3) and (4) are each composed of a plurality of molecular chains, and n in each of the molecular chains is preferably an integer of 1 to 3, and n as a whole It is preferable to have an average value of 1 or more. The aromatic condensed phosphoric acid ester compound described above is generally a mixture in which n = 1 to 3 is 90% or more, and can be obtained as a mixture containing n = 4 or more multimers and other by-products.

In the present embodiment, the blending amount of the (VI) phosphate ester compound is preferably 5 to 30 parts by mass, more preferably 10 to 25 parts by mass from the viewpoint of the balance between flame retardancy, dimensional accuracy and creep characteristics. .

<Other thermoplastic resins (VII)>
The resin composition contained in the molded body of the present embodiment further includes a thermoplastic resin (VII) other than the polyphenylene ether resin (I) and the polypropylene resin (II) (hereinafter also referred to as “component (VII)”). It is preferable. Although it does not specifically limit as a component (VII), For example, a polystyrene, a syndiotactic polystyrene, a high impact polystyrene is mentioned.

  The content of the component (VII) is preferably 0 to 400 parts by mass, more preferably 0 to 300 parts by mass, and still more preferably 0 to 200 parts by mass with respect to 100 parts by mass of the component (I) described above. Part. When the content of component (VII) is within the above range, it tends to be more excellent in dimensional accuracy and creep characteristics.

<Other additives>
The molded body of the present embodiment includes the above-described component (I), component (II), component (III), component (IV), component (V), component (VI), and component (VII), An additive may be included.

  Other additives are not particularly limited, and examples thereof include vinyl aromatic compound-conjugated diene compound block copolymers, olefin elastomers, antioxidants, metal deactivators, thermal stabilizers, and component (III). , Flame retardants other than component (VI) (ammonium polyphosphate compounds, melamine polyphosphate compounds, magnesium hydroxide, aromatic halogen flame retardants, silicone flame retardants, zinc borate, etc.), fluorine polymers, plasticizers (Low molecular weight polyethylene, epoxidized soybean oil, polyethylene glycol, fatty acid esters, etc.), flame retardant aids such as antimony trioxide, weather resistance (light) improver, polyolefin nucleating agent, slip agent, component (V) Other inorganic or organic fillers and reinforcing materials (carbon black, titanium oxide, calcium carbonate, conductive carbon black, etc.) Various coloring agents, release agents, and the like.

[2. Molded body]
The manufacturing method of the molded object of this embodiment is demonstrated. The molded body of the present embodiment comprises the above-described component (I), component (II), and component (III), and optionally component (IV), component (V), component (VI), and component (VII). And a resin composition containing other additives can be produced by molding. Although it does not specifically limit as a manufacturing method of such a resin composition, It can manufacture using various melt mixers and kneading | mixing extruders. Specifically, the production method 1 or the production method 2 having the following steps is preferable when the component (I), the component (II), and the component (III) are melt-kneaded. The kneaded resin composition may be pelletized.

(Production Method 1 of Resin Composition)
Production method 1 is obtained by melt-kneading the whole amount of component (I) and a part or all of component (II) to obtain a kneaded product (1-1) and the step (1-1). A part or all of the component (III) and the remainder of the component (II) (except when the whole amount of the component (II) is used in step (1-1)) are added to the kneaded product. And melt-kneading to obtain a kneaded product (1-2), and the kneaded product obtained in the step (1-2), the remainder of component (III) (however, step (1-2) (Except when the total amount of the component (III) is used) and melt-kneading (1-3).

(Method 2 for producing resin composition)
Production method 2 is obtained by melt-kneading the total amount of component (I) and a part or all of component (II) to obtain a kneaded product (2-1) and the step (2-1). Step of adding the remainder of component (II) to the kneaded product (excluding the case where the whole amount of component (II) is used in step (2-1)), and melt-kneading to obtain a kneaded product ( 2-2) and a step (2-3) of adding the whole amount of the component (III) to the kneaded product obtained in the step (2-2) and melt-kneading.

  Like these manufacturing methods 1 and 2, decomposition | disassembly of component (III) can be suppressed by delaying the process of adding component (III) at the time of melt-kneading. As a result, there is a tendency to obtain a resin composition capable of realizing a molded article having more excellent flame retardancy. The method of delaying the timing of addition of component (III) is not limited to the following. For example, in a melt kneader or a kneading extruder having a plurality of raw material supply ports, component (III) is supplied to the downstream raw material supply port. And the like.

  The melt kneader for performing these methods is not particularly limited, and a known melt kneader can be used. For example, a single screw extruder, a multi-screw extruder including a twin screw extruder, a roll, a kneader, Examples thereof include a heat-melting and kneading machine such as a lavender plastograph and a Banbury mixer. Among them, the melt kneading method using a twin screw extruder is preferable. Specifically, the ZSK series manufactured by Coperion, the TEM series manufactured by Toshiba Machine Co., Ltd., the TEX series manufactured by Nippon Steel Works, Ltd., and the like can be used.

  Moreover, if it is a case where an extruder is used, the kind, specification, etc. will not be specifically limited, A well-known extruder can be used suitably. The L / D (barrel effective length / barrel inner diameter) of the extruder is preferably 20 or more and 75 or less, and more preferably 30 or more and 60 or less.

  The configuration of the extruder is not particularly limited. For example, the first raw material supply port on the upstream side with respect to the flow direction of the raw material, the first vacuum vent on the downstream side, and the second and third raw material supply ports on the downstream side. It is preferable to provide a second vacuum vent on the downstream side.

  Moreover, the raw material supply method to a 2nd, 3rd raw material supply port is not specifically limited, Even if it adds and supplies from the open port of the 2nd, 3rd raw material supply port of an extruder, it is forced from an extruder side open port. You may supply using a side feeder. Among these, it is preferable from the viewpoint of stability to supply from the side opening of the extruder using a forced side feeder.

  The melt kneading temperature and the screw rotation speed are not particularly limited, but can be appropriately selected from a melt kneading temperature of 200 to 370 ° C. and a screw rotation speed of 100 to 1200 rpm. Moreover, when supplying a liquid raw material, it can knead | mix by sending a liquid raw material directly into a cylinder system using a liquid addition pump etc. to an extruder cylinder part. At this time, as a method of feeding the liquid raw material, a method using a liquid pump is preferable. The liquid pump is not particularly limited. For example, a gear pump or a flange pump can be used, and among these, a gear pump is preferable. Furthermore, in order to feed the liquid raw material, the tank that stores the liquid raw material used for the liquid pump, the pipe between the tank and the pump, the pipe between the pump and the extruder cylinder, etc. If it is used after heating and heating, etc., to reduce the viscosity of the liquid raw material slightly, the load applied to the liquid pump is reduced, which is preferable in terms of operability.

(Method for producing molded body)
The molded body of this embodiment can be obtained by molding the resin composition by a conventionally known molding method. Although it does not specifically limit as a shaping | molding method, For example, the method of shape | molding the pelletized resin composition by injection molding, extrusion molding, extrusion profile formation, hollow molding, compression molding etc. is mentioned. Among these, injection molding is preferable from the viewpoint of more effectively expressing the effects of the present embodiment.

(Characteristics of molded product)
In the molded body of this embodiment, the number of hydroxyl groups per 100 units of the polyphenylene ether resin (I) in the molded body is X, and the number average particle diameter of the metal phosphinate (III) is Y μm. In this case, the value of Y / X is 1.5 or more and 15 or less. When Y / X is in this range, the molded article of this embodiment has an excellent balance between flame retardancy and creep characteristics, and also has excellent dimensional accuracy. From the same viewpoint, it is preferably 2 or more and 10 or less, and more preferably 2 or more and 7 or less.

  The number X of hydroxyl groups per 100 units of monomer of the polyphenylene ether resin (I) can be measured by the method described in Journal of Applied Polymer Science: Applied Polymer Symposium 34, 103-117 (1978).

  The hydroxyl group concentration of the polyphenylene ether resin (I) varies depending on the conditions for polymerizing the phenolic compound corresponding to the monomer component contained in the polyphenylene ether resin (I) and the conditions for the quinone reaction after termination of the polymerization. As an example of the polymerization, poly (2,6-dimethyl-1,4-phenylene) ether is described in JP-A Nos. 2000-281767 and 2000-281778. The amount of quinone compound produced varies depending on the amount of phenol added and time. Generally, the greater the amount of 2,6-dimethylphenol added during polymerization and the shorter the addition time, the greater the amount of quinone compound produced. In the quinone reaction after the termination of polymerization, the terminal hydroxyl group concentration varies depending on the temperature and time. The higher the temperature and the longer the time, the higher the hydroxyl group concentration. As described above, the hydroxyl group concentration of the polyphenylene ether resin (I) as a raw material is not particularly limited, as long as the hydroxyl group concentration of the polyphenylene ether resin (I) as a molded body satisfies the predetermined relationship of this embodiment.

  As a method for controlling X of the polyphenylene ether resin (I) used in the present embodiment, in addition to a method for controlling the hydroxyl group concentration by a method for limiting the conditions for polymerizing the phenolic compound and the conditions for the quinone reaction after the termination of polymerization, Generally, a method of increasing the hydroxyl group concentration by adding a quinone compound to polyphenylene ether obtained by polymerization and reacting with quinone can also be used.

  As a method for measuring the number average particle diameter of the metal phosphinate (III) in the molded product of the present embodiment, an image obtained by cutting the molded product with a microtome and observing the appeared cut surface with a scanning electron microscope (SEM). And taking a photograph and measuring the particle diameter of 100 or more dispersed particles of the component (III) using an image analyzer.

As a specific example, the resin composition in the present embodiment is supplied to a screw in-line injection molding machine (“IS-100GN” manufactured by Toshiba Machine Co., Ltd.) set at 250 to 300 ° C., and a mold temperature of 70 ° C. Under these conditions, a test piece having a dimension (thickness of 1.6 mm) defined by UL-4 is injection molded. The core phase near the center of the test piece was cut with a microtome in a direction perpendicular to the flow direction, and the resulting cut surface was 0 using a scanning electron microscope (manufactured by Hitachi High-Tech Co., Ltd., S-3000N). .Take a photo of a surface of 05 mm ^{2 at} a magnification of 800 times.

  Photographs are taken at three locations, and the number average particle size is determined using an image analysis device (manufactured by Nireco Corp., LUZEXSE) based on each photograph (measurement target is one having a major axis of 0.5 μm or more). The three-point number average particle diameter is obtained, and the average value is defined as the number average particle diameter Y of the phosphinic acid salt (III) (in the molded product) in this specification.

  The method for controlling Y of the metal phosphinate (III) used in the present embodiment is not particularly limited, but, for example, melt kneading when purchasing a resin having an appropriate number average particle diameter and producing a resin composition Examples include a method of adjusting conditions (cylinder temperature setting of the extruder, feed position of the raw material, screw rotation speed, extrusion amount per unit time, etc.). When there is no product having an appropriate number average particle size, the method is not limited to the following. For example, a method of obtaining a product having a large number average particle size and pulverizing can be used. The pulverization method is not particularly limited. As described above, the number average particle diameter of the metal phosphinate (III) as a raw material is not particularly limited, and the number average particle diameter of the metal phosphinate (III) when formed into a molded body is a predetermined relationship in this embodiment. Should be satisfied.

(Use of molded product)
Moreover, it is although it does not specifically limit as a use of the molded object of this embodiment, For example, the interior and exterior components of an automotive part and an electric equipment are mentioned. Although it is not particularly limited as automobile parts, specifically, bumper, fender, door panel, various moldings, emblems, engine hoods, wheel caps, roofs, spoilers, various aero parts and other exterior parts; instrument panels, Examples include interior parts such as console boxes and trims; secondary battery battery case parts mounted on automobiles, electric cars and hybrid electric cars; lithium ion secondary battery parts and the like. In addition, the interior and exterior parts of the electrical equipment are not particularly limited, but specifically, various computers and peripheral devices, other OA equipment, televisions, videos, various disk player cabinets, chassis, refrigerators, air conditioners, Examples include parts used in liquid crystal projectors.

  Further, the molded body of the present embodiment includes an electric wire / cable obtained by coating a metal conductor or an optical fiber, a fuel case for a solid methanol battery, a fuel cell water distribution pipe, a water cooling tank, a boiler outer case, and ink peripheral parts of an inkjet printer. -Can be used for parts, furniture (chairs, etc.), chassis, water piping, joints, etc.

  Hereinafter, although an embodiment and a comparative example explain this embodiment, this embodiment is not limited by these examples. In addition, the used raw material is as follows.

Polyphenylene ether resin (I)
(Ii) Reduced viscosity (ηsp / c: 0.5 g / dL chloroform solution) 0.52 obtained by oxidative polymerization of 2,6-xylenol, number of hydroxyl groups per 100 units of monomer 88 polyphenylene ether (I-ii) 2,6-xylenol obtained by oxidative polymerization, reduced viscosity (ηsp / c: 0.5 g / dL chloroform solution) 0.42, hydroxyl group per 100 units of monomer 1.05 of polyphenylene ether (I-iii) 2,6-xylenol obtained by oxidative polymerization, reduced viscosity (ηsp / c: 0.5 g / dL chloroform solution) 0.50, monomer 100 Polyphenylene ether with 0.38 hydroxyl groups per unit

  The reduced viscosity was measured at 30 ° C. using a chloroform solution of ηsp / c: 0.5 g / dL.

Polypropylene resin (II)
(II-i) Polypropylene homopolymer with MFR = 0.4 g / 10 min (II-ii) Polypropylene homopolymer with MFR = 5.9 g / 10 min (II-iii) Polypropylene homopolymer with MFR = 15 g / 10 min

  The MFR of the polypropylene resin (II) was measured according to ISO 1133 under the conditions of 230 ° C. and a load of 2.16 kg.

Metal dialkylphosphinate (III)
(III-i) Exolit OP1230 manufactured by Clariant
(III-ii) Exolit OP930 manufactured by Clariant

  Note that both (III-i) and (III-ii) are aluminum dialkylphosphinates.

Hydrogenated block copolymer resin (IV)
It has a hydrogenated polybutadiene-polystyrene-hydrogenated polybutadiene-polystyrene structure (BABA), the amount of bound styrene is 44% by mass, the number average molecular weight of the whole polymer is 95,000, and the molecular weight distribution is 1. 0.06, a hydrogenated block copolymer having a polystyrene part (A) number average molecular weight of 20900, a polybutadiene before hydrogenation having a 1,2-vinyl bond content of 75% and a polybutadiene part having a hydrogenation rate of 99.9%. Synthesized according to standard methods.

  The amount of vinyl bonds in the polybutadiene moiety was measured with an infrared spectrophotometer, and the calculation method was Analytical Chemistry, Volume 21, No. 8, according to the method described in August 1949. The amount of bound styrene was measured with an ultraviolet spectrophotometer. Furthermore, the number average molecular weight of the polystyrene chain was measured by GPC (moving layer: chloroform, standard material: polystyrene). Furthermore, the hydrogenation rate of the polybutadiene portion was measured by NMR.

Inorganic filler (V)
(Vi) Glass chopped strand ECS03T-249 (manufactured by Nippon Electric Glass)
(V-ii) Talc Talcan powder PK-C (manufactured by Hayashi Kasei)

Phosphate ester compounds (VI)
Bisphenol-A-bis (diphenyl phosphate) (manufactured by Daihachi Chemical Industry)

<Method for producing resin composition>
As a resin composition production apparatus, a twin screw extruder ZSK-25 (manufactured by Coperion) was used. In the twin-screw extruder, a first raw material supply port is provided on the upstream side with respect to the flow direction of the raw material, second and third raw material supply ports are provided on the downstream side, and a liquid feed pump is provided on the downstream side. A vacuum vent was provided between the second raw material supply port, the third raw material supply port, and the liquid pump. Moreover, the raw material supply method to a 2nd, 3rd supply port was made into the method of supplying using a forced side feeder from an extruder side open port. To the twin-screw extruder set as described above, the components (I) to (VI) are supplied with the compositions shown in Table 1, the extrusion temperature and the screw rotation speed are set to the values shown in Table 1, and the discharge amount The mixture was melt-kneaded under conditions of 15 kg / hour to obtain resin composition pellets.

<Method for producing molded body>
The resin pellets of Examples 1 to 18 and Comparative Examples 1 to 11 obtained above were supplied to a Toshiba Machine IS-100GN molding machine set at a cylinder temperature of 240 ° C., and conditions of a mold temperature of 60 ° C. and an injection pressure of 60 MPa were used. Then, five test pieces (1.6 mm thickness) for measuring UL-94 vertical combustion test were injection molded.

<Measurement method of flame retardancy>
Using these five test pieces, flame retardancy was evaluated based on the UL-94 vertical combustion test. After 10 seconds of flame contact, the combustion time from the release of the flame until the flame disappears is defined as t1 (seconds). After 10 seconds of flame contact, the combustion time from the release of the flame until the flame disappears is represented by t2 (seconds). ) And the average burning time of t1 and t2 was obtained for each of the five. On the other hand, among the 10 points including t1 and t2, the maximum one was set as the maximum combustion time. Moreover, based on UL-94 specification, determination of V-0, V-1, V-2, and HB was implemented.

<Evaluation method of dimensional accuracy (mold shrinkage)>
The resin pellets obtained above are supplied to a SE-130 molding machine manufactured by Sumitomo Heavy Industries, Ltd., set to a cylinder temperature of 240 ° C., and molded under the conditions of a mold temperature of 60 ° C. and an injection pressure of 100 MPa, 120 mm × 80 mm × A 2 mm flat plate was obtained. The obtained flat plate was allowed to stand at 23 ° C. and 50 RH% for 24 hours, and then the length of the long side and the short side of the flat plate was measured, and the molding shrinkage was calculated from the actual mold dimensions. The smaller the molding shrinkage, the better the dimensional accuracy.

<Evaluation method of creep characteristics>
The resin pellets obtained above are supplied to a Toyo Machine Metal Ti-50G2 molding machine set at a cylinder temperature of 245 ° C. and molded under the conditions of a mold temperature of 60 ° C. and an injection pressure of 65 MPa to obtain a test piece for creep measurement. It was. In addition, as a test piece for creep measurement, a dumbbell molded product (thickness 1 mm) having the shape shown in FIG. 1 was used. The width L _{1 of the} test piece was 65 mm, the width L ₂ was 40 mm, the width L ₃ was 22 mm, and the height H was 10 mm.

The obtained test piece was subjected to a creep tester (“145-B-PC type” manufactured by Yasuda Seiki Seisakusho Co., Ltd.) with a distance between chucks of 40 mm, a test load corresponding to a stress of 12.25 MPa, and a test temperature of 80 ° C. Creep measurement (heat-resistant creep resistance test) was performed under the condition of a test time of 165 hours. The heat resistance creep property (creep property) was evaluated by the strain [%] obtained by the following formula. The smaller the numerical value of this strain, the better the creep characteristics.
Strain [%] = (displacement of test piece after 165 hours) / (distance between chucks) × 100

<Quantification of hydroxyl amount X of component (I) in the molded body>
The number X of hydroxyl groups per 100 units of the monomer of the polyphenylene ether resin (I) was determined by the method described in Journal of Applied Polymer Science: Applied Polymer Symposium 34, 103-117 (1978). That is, using the test piece for measuring creep characteristics obtained above, the amount of hydroxyl group X of the component (I) was quantified by the method described in the literature.

<Measurement of Number Average Particle Diameter Y of Component (III) in Molded Body>
The number average particle diameter Y of the component (III) in the molded body was measured as follows. First, the vicinity of the center of the test piece for measuring creep characteristics obtained above was cut with a microtome. Then, the image which observed the cut surface which appeared using the scanning electron microscope (SEM: Hitachi High-Tech Co., Ltd. product, S-3000N) was photographed (photographing the surface of 0.05 mm < ² > at 800 time magnification). Based on this photograph, the particle diameter of 100 or more dispersed particles of component (III) was measured using an image analyzer. Photographs were taken at three locations, and the number average particle diameter was determined using an image analysis apparatus (manufactured by Nireco Corporation, LUZEXSE) based on each photograph (measurement target having a major axis of 0.5 μm or more). The number average particle diameter of three points was determined, and the average value was defined as the number average particle diameter Y of each example.

  From the results of Table 1, it was found that according to the composition and the production method of the present embodiment, a molded article having an excellent balance between flame retardancy and creep characteristics and excellent dimensional accuracy can be obtained. Moreover, when it was out of the range of the present embodiment, it was found that the obtained molded article was not sufficient in either flame retardancy and creep characteristics, and further, none of the dimensional accuracy was sufficient.

  The molded body according to the present invention has an excellent balance between flame retardancy and creep characteristics, and also has excellent dimensional accuracy, and can be suitably used for various applications that require these characteristics.

Claims (7)

A molded article comprising a resin composition containing a polyphenylene ether resin (I), a polypropylene resin (II), and a metal phosphinate (III) represented by the following general formula (1):
When the number of hydroxyl groups per 100 units of the monomer of the polyphenylene ether resin (I) in the molded body is X and the number average particle diameter of the metal phosphinate (III) is Y μm, the value of Y / X is A molded product that is 1.5 or more and 15 or less.
(In formula (1), R ¹ and R ² are each independently a linear or branched alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 10 carbon atoms, and M is (It is 1 or more types chosen from the group which consists of calcium, magnesium, aluminum, zinc, bismuth, manganese, sodium, potassium, and the protonated nitrogen base, and m is 1-3.)   The molded body according to claim 1, wherein the value of Y / X is 2 or more and 7 or less.   The resin composition is mainly composed of a polymer block P mainly composed of a vinyl aromatic compound and a conjugated diene compound having a total amount of 1,2-vinyl bonds and 3,4-vinyl bonds of 30 to 90%. The molded body according to claim 1 or 2, further comprising a hydrogenated block copolymer resin (IV) in which at least a part of a block copolymer including the polymer block Q is hydrogenated.   The molded body according to claim 3, wherein the content of the hydrogenated block copolymer resin (IV) is 1 to 30 parts by mass with respect to 100 parts by mass in total of the components (I) and (II). The molded product according to any one of claims 1 to 4 , wherein a mass ratio (I) / (II) of the polyphenylene ether resin (I) to the polypropylene resin (II) is 20/80 to 80/20. The content of the metal phosphinate (III) is, the 1 to 30 parts by weight per 100 parts by weight of the polyphenylene ether resin (I) and the polypropylene resin (II), any of the claims 1-5 2. A molded article according to item 1. The molded object according to any one of claims 1 to 6, further comprising a fibrous and / or plate-like inorganic filler (V).