JP2005272533A5 - - Google Patents

Description

Polyphenylene ether resin composition

  The present invention relates to a polyphenylene ether resin composition that retains a good surface gloss of a molded article and exhibits an excellent balance between surface impact resistance, tensile elongation, and rigidity.

Polyphenylene ether-based resins are excellent in lightness, mechanical properties, molding processability, heat resistance, dimensional stability, electrical characteristics, etc., so they are widely used in the home appliance OA field, office machine field, information equipment field, automobile field, etc. Yes.
In general, a drawback of thermoplastic resins is that they are less rigid than metals, and a technique of blending an inorganic filler is widely used to improve the rigidity. However, when an inorganic filler is blended with a thermoplastic resin, rigidity and mechanical strength are improved, but on the other hand, impact resistance, tensile elongation, surface smoothness and the like are reduced.

  Add a small amount of layered silicate mineral that has been intercalated with an organic agent such as quaternary ammonium ion substituted with an alkyl group as a technique to improve rigidity and improve ductility by blending an inorganic filler with polyphenylene ether resin. Have already been disclosed (for example, see Patent Documents 1, 2, and 3). In any of these patent documents, when preparing a resin composition in which such a layered silicate mineral is added to a polyphenylene ether resin or a thermoplastic resin containing the same, the layered silicate mineral is uniformly contained in the resin. Fine dispersion is preferable in order to maintain ductility. Therefore, the necessity of melt kneading with strong shearing force as in a twin-screw extruder, preliminarily kneading resin component and layered silicate mineral in advance It shows how to keep it. Also, it is important to mix under mechanical shear in the molten state of the thermoplastic resin, and it can be added to any form of thermoplastic resin such as powder, flakes and chips after polymerization, It is described that a method of melt mixing in a kneader can also be mixed (see, for example, Patent Document 2).

However, in the methods described in these patent documents, it is possible to improve the ductility by dispersing a small amount of such a specific inorganic filler in the polyphenylene ether resin, but a large amount of the inorganic filler is blended. Thus, it is not sufficient to sufficiently improve the rigidity, maintain a good surface gloss of the molded product, and improve the surface impact resistance and the tensile elongation.
JP 07-324160 A Japanese Patent No. 3269277 Japanese translation of PCT publication No. 2002-542329

  The present invention can be effectively used in the fields of home appliances / OA, office machines, information equipment and automobiles, has high rigidity, and has excellent surface gloss, surface impact resistance, tensile elongation, reworkability and recyclability. Another object of the present invention is to provide an excellent resin composition.

The present inventors have not adversely affected the environment, imparted high heat resistance and high rigidity, and did not deteriorate the molding fluidity, and the resistance of molded products comprising a polyphenylene ether-based resin composition reinforced with an inorganic filler. As a result of intensive studies aimed at improving surface impact and tensile elongation, treated with an organic agent when blending an inorganic filler into a polyphenylene ether resin or a resin comprising a polyphenylene ether resin and a styrene resin. By using a layered silicate mineral powder and adding a small amount of fatty acid amide, it has excellent heat resistance, fluidity, surface gloss of molded products, and remarkably excellent balance between rigidity, surface impact resistance, and tensile elongation. The present inventors have found that a resin composition can be produced and are excellent in reworkability and recyclability, and have reached the present invention.

That is, the present invention
[1] 50 to 95 parts by weight of polyphenylene ether resin (a), layered silicate mineral powder treated with an organic agent (b) 50 to 5 parts by weight, total amount of component (a) and component (b) 100 weight 0 to 150 parts by weight of styrene-based resin, 100 parts by weight of the total amount of component (a), component (b) and component (c), and 0.005 to 5 parts by weight of fatty acid amide (d) Containing, melt-kneaded polyphenylene ether resin composition,
[ 2 ] The component (b) is bentonite or hectorite treated with an alkylating quaternary ammonium ion as an organic agent, and the amount of treatment is in the range of 100 to 200 meq / 100 g, and X-ray The polyphenylene ether resin composition according to the above [ 1 ], wherein the value of the interlayer distance of the d (001) plane measured by diffraction is 20 mm or more;
[ 3 ] The polyphenylene ether resin composition according to the above [1] or [2] , wherein the component (d) is a higher saturated fatty acid bisamide having C8 to C25,
[ 4 ] A molded article molded using the polyphenylene ether resin composition of [1] to [3 ] above.

  According to the present invention, the dispersibility of the inorganic filler in the resin is remarkably improved, high heat resistance, high rigidity, excellent surface impact resistance, surface gloss, tensile elongation, and recyclability of the molded product. A polyphenylene ether resin composition was obtained.

The present invention will be described in further detail.
The polyphenylene ether resin which is the component (a) of the present invention is a homopolymer comprising the following general formula (1) as a repeating unit and the structural unit consisting of [a] or [b] in the general formula (1): Alternatively, a copolymer can be used.

(In the formula, R 1, R 2, R 3, R 4, R 5 and R 6 are monovalent residues such as an alkyl group having 1 to 4 carbon atoms, an aryl group, halogen and hydrogen, and R 5 and R 6 are not hydrogen at the same time)

  Typical examples of the homopolymer of polyphenylene ether resin include poly (2,6-dimethyl-1,4-phenylene) ether, poly (2-methyl-6-ethyl 1,4-phenylene) ether, poly (2 , 6-Diethyl-1,4-phenylene) ether, poly (2-ethyl-6-n-propyl-1,4-phenylene) ether, poly (2,6-di-n-propyl-1,4-phenylene) ) Ether, poly (2-methyl-6-n-butyl-1,4-phenylene) ether, poly (2-ethyl-6-isopropyl-1,4-phenylene) ether, poly (2-methyl-6-chloroethyl) -1,4-phenylene) ether, poly (2-methyl-6-hydroxyethyl-1,4-phenylene) ether, poly (2-methyl-6-chloroethyl-1,4-phenol) Include homopolymers of alkylene) ether.

Examples of the polyphenylene ether copolymer include a copolymer of 2,6-dimethylphenol and 2,3,6-trimethylphenol, a copolymer of 2,6-dimethylphenol and o-cresol, or 2,3,6. -Polyphenylene ether copolymers mainly composed of a polyphenylene ether structure, such as a copolymer of trimethylphenol and o-cresol, are included.
Further, the polyphenylene ether resin used in the present invention may contain other various phenylene ether units as a partial structure as long as it does not contradict the gist of the present invention. Examples of these phenylene ether units include 2- (dialkylaminomethyl) -6-methylphenylene ether units described in JP-A-01-297428 and JP-A-63-301222, and 2- ( N-alkyl-N-phenylaminomethyl) -6-methylphenylene ether unit and the like.
Also included are those in which a small amount of diphenoquinone or the like is bonded to the main chain of the polyphenylene ether resin.

In the polyphenylene ether resin used in the present invention, a part or all of the polyphenylene ether resin can be replaced with a functionalized polyphenylene ether modified with a functional derivative such as an unsaturated carboxylic acid. In this case, the modification may be performed with one of the functional derivatives or a combination of two or more.
The intrinsic viscosity (measured with a chloroform solvent at 30 ° C.) of the polyphenylene ether resin used in the present invention is preferably in the range of 0.3 to 0.9, more preferably in the range of 0.4 to 0.6. is there. In order to sufficiently finely disperse the inorganic filler, 0.3 or more is preferable, and 0.9 or less is preferable from the viewpoint of moldability.
The property of the polyphenylene ether resin used in the present invention is not particularly limited, but from the viewpoint of miscibility with the component (b), it is preferable to use a polymerized powdery property.

In the component (b) of the present invention, the organic agent used for treating the layered silicate mineral salt powder has affinity and reactivity with the surface of the layered silicate mineral salt such as a specific surfactant or water-soluble polymer. Or onium ions incorporated between layer layers of layered silicate minerals such as montmorillonite and swellable mica, etc., localized on the surface of the inorganic filler particles or on the surface between layers, and melt miscible with polyphenylene ether resin There is no particular limitation as long as it improves. Preferred as such an organic agent are silane compounds and alkyl-substituted quaternary ammonium ions.

  The silane compound is usually used for surface treatment of glass fillers, mineral fillers and the like. Specific examples thereof include vinyl silane compounds such as vinyltrichlorosilane, vinyltriethoxysilane, γ-methacryloxypropyltrimethoxysilane, epoxy silane compounds such as γ-glycidoxypropyltrimethoxysilane, and bis (3-triethoxysilyl). Sulfur-based silane compounds such as propyl) tetrasulfide, mercaptosilane compounds such as γ-mercaptopropyltrimethoxysilane, and aminosilane compounds such as γ-aminopropyltriethoxysilane and γ-ureidopropyltriethoxysilane.

Alkyl-substituted quaternary ammonium ions are used as an interlaminar treatment agent for layered silicate minerals, and are incorporated between layers of layered silicate mineral particles to increase the spacing between layers and promote delamination during melt-kneading. is there. Specific examples thereof include dimethyl hydrogenated ditallow ammonium ion, benzyldimethyl hydrogenated tallow ammonium ion, and methylbenzyl hydrogenated ditallow ammonium ion.
By treating the layered silicate mineral salt powder with such an organic agent, the interfacial adhesion between the resin and the layered silicate mineral salt particles is only reinforced when melt-kneaded with the polyphenylene ether resin. At the same time, the powder properties of the layered silicate mineral salt powder itself are remarkably improved, the handleability is improved, and the miscibility with the resin by melt kneading is also improved.

As the layered silicate mineral salt powder treated with the organic agent which is the component (b) of the present invention, bentonite or hectorite treated with dimethyl hydrogenated ditallow ammonium ions is particularly preferred.
In the bentonite or hectorite used in the present invention, the treatment amount of dimethyl hydrogenated ditallow ammonium ion is preferably in the range of 100 to 200 meq / 100 g, more preferably in the range of 100 to 150 meq / 100 g. Is within. 100 milliequivalents / 100 g or more is desirable in order to sufficiently widen the layer interval in the bentonite or hectorite particles and to facilitate delamination during melt-kneading. From the viewpoint of sufficient heat resistance and rigidity maintenance, 200 milliequivalent / 100 g or less is desirable.

The bentonite or hectorite used in the present invention preferably has a d (001) plane interlayer distance measured by X-ray diffraction of 20 mm or more, more preferably 25 to 40 mm. From the viewpoint of sufficient layer peeling promotion during melt-kneading, the interlayer distance is preferably 20 mm or more.
The styrene resin as the component (c) of the present invention is a polymer obtained by polymerizing a styrene compound or a compound copolymerizable with the styrene compound in the presence or absence of a rubbery polymer.
The styrene compound means a compound represented by the general formula [2].

(In the formula, R represents hydrogen, lower alkyl, or halogen, Z is selected from the group consisting of vinyl, hydrogen, halogen, and lower alkyl, and p is an integer of 0-5.)

  Specific examples thereof include styrene, α-methylstyrene, 2,4-dimethylstyrene, monochlorostyrene, p-methylstyrene, p-tert-butylstyrene, and ethylstyrene. Examples of the compound copolymerizable with the styrene compound include methacrylic acid esters such as methyl methacrylate and ethyl methacrylate; unsaturated nitrile compounds such as acrylonitrile and methacrylonitrile; and acid anhydrides such as maleic anhydride. And used with styrenic compounds. Examples of rubbery polymers include conjugated diene rubbers, copolymers of conjugated dienes and aromatic vinyl compounds, hydrogenated products thereof, or ethylene-propylene copolymer rubbers. Particularly preferred polystyrene resins for the present invention are polystyrene and rubber reinforced polystyrene.

The fatty acid amide as the component (d) of the present invention is a compound represented by the general formula, RCONHR (R: alkyl group). The range of the preferable carbon number of the alkyl group of (d) component used for this invention is C8-C25, More preferably, it is C10-C22. C8 or more is desirable from the viewpoints of heat resistance and handleability, and C25 or less is desirable from the viewpoint of improving gloss of molded products and impact resistance.
Specific examples thereof include saturated fatty acid monoamides such as lauric acid amide, palmitic acid amide, stearic acid amide, behenic acid amide and hydroxystearic acid amide, unsaturated fatty acid monoamides such as oleic acid amide, erucic acid amide and ricinoleic acid amide. N-lauryl lauric acid amide, N-palmityl palmitic acid amide, N-stearyl stearic acid amide, N-oleyl oleic acid amide, N-stearyl oleic acid amide, N-oleyl stearic acid amide, N-stearyl erucic acid Amide, N-oleyl palmitate amide, N-stearyl 12 hydroxystearic acid amide, substituted amides such as N-oleyl 12 hydroxystearic acid amide, methylol stearate amide , Methylol amide such as methylol behenic acid amide and the like.

  Also, methylene bis stearic acid amide, methylene bis stearic acid amide, methylene bis lauric acid amide, methylene bis hydroxystearic acid amide, ethylene biscaprylic acid amide, ethylene biscapric acid amide, ethylene bis lauric acid amide, ethylene bis stearic acid amide Saturated fatty acid bisamides such as ethylene bisisostearic acid amide and ethylene bishydroxystearic acid amide, unsaturated fatty acid bisamides such as methylene bisoleic acid amide, ethylene bisoleic acid amide, ethylene biserucic acid amide and hexamethylene bisoleic acid amide And aromatic bisamides such as m-xylylene bis stearic acid amide and N, N′-distearylisophthalic acid amide. That.

Among the fatty acid amides used as the component (d) of the present invention, more preferable are saturated fatty acid bisamides, and ethylene bissaturated fatty acid amides such as ethylene bisstearyl amide are particularly preferable.
The blending amount of the polyphenylene ether resin which is the component (a) of the present invention is selected from the range of 50 to 99.9 parts by weight. A preferred range is 60 to 99 parts by weight, and a more preferred range is 70 to 95 parts by weight. A blending amount of 50 parts by weight or more is desirable from the viewpoint of miscibility with component (b), heat resistance, and processability, and a blending amount of 99.9 parts by weight or less is desirable from the viewpoint of mechanical properties such as rigidity.
The compounding quantity of the layered silicate mineral salt powder processed with the organic agent which is (b) component of this invention is chosen from the range of 50-0.1 weight part. A preferred range is 40 to 1 part by weight, and a more preferred range is 30 to 5 parts by weight. From the viewpoints of miscibility with the component (a), processability, etc., 50 parts by weight or less is desirable, and from the viewpoint of improving mechanical properties, 0.1 part by weight or more is desirable.

The blending amount of the styrene resin as the component (c) of the present invention is selected from the range of 0 to 150 parts by weight with respect to 100 parts by weight of the total amount of the components (a) and (b). Preferably it is 10-130 weight part, More preferably, it is 20-100 weight part. A blending amount of 150 parts by weight or less is desirable from the viewpoint of providing sufficient heat resistance.
The addition amount of the fatty acid amide which is the component (d) of the present invention is from 0.005 to 5 parts by weight with respect to 100 parts by weight of the total amount of the component (a), the component (b) and the component (c). The preferred range is 0.01 to 3 parts by weight, more preferably 0.05 to 1 part by weight. Addition of 0.005 parts by weight or more is desirable from the viewpoint of sufficient impact resistance and improvement of surface gloss of the molded article, and addition of 5 parts by weight or less is desirable from the viewpoint of maintaining sufficient heat resistance.

In the present invention, a flame retardant is used when it is necessary to impart flame retardancy. The resin composition of the present invention exhibits particularly excellent flame retardancy when blended with an aromatic phosphate ester flame retardant. For example, triphenyl substitution type such as triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, xylenyl diphenyl phosphate, dixylenyl phenyl phosphate, hydroxynon bisphenol, resorcinol bisphosphate, bisphenol A bisphosphate, etc. The aromatic phosphoric acid esters are particularly preferably used. These may be used alone or in combination of two or more.
If necessary, stabilizers such as antioxidants, ultraviolet absorbers, heat stabilizers, coloring agents, release agents and the like can be added to the resin composition of the present invention.

  As a more specific adjustment method of the resin composition of the present invention, a single-screw or twin-screw extruder is preferably used for stably producing a large amount of the resin composition. In particular, in order to finely disperse component (b), it is desirable to use a twin screw extruder, for example, a mixture of component (a) and component (b), or component (a) and component (b). And a mixture of the component (c) is sufficiently melt-kneaded, and then a twin screw extruder having a raw material feed port in the middle of the cylinder of the extruder is used so that the remaining component (c), a flame retardant, etc. can be fed. It is more preferable. Using a twin-screw extruder equipped with such a raw material feed port, it is possible to obtain the desired resin composition by single-stage extrusion. After extruding the mixture of component (b) or the mixture of component (a), component (b), component (c), etc., the remaining raw materials are blended into the extruded pellets and melt-kneaded to obtain the final resin composition. May be.

In addition, molding waste such as runner parts generated by injection molding of the resin composition of the present invention and molded products collected after being marketed are pulverized and blended into unused resin pellets at an arbitrary ratio. Creating a new molded article is also possible from the viewpoint of maintaining and improving the physical properties of the material, which is preferable from the viewpoint of effective use of resources and environmental protection.
When the molded body is molded using the resin composition of the present invention, the molding method is not particularly limited, but already known molding methods such as injection molding, extrusion molding, vacuum molding, and pressure molding are preferably used.

The present invention will be specifically described below based on examples. The present invention is not limited to these examples. The parts used below are parts by weight.
Each measured value in Examples and Comparative Examples was determined by the following method.
(1) Izod impact value with notch Based on ASTM D256, it measured at 23 degreeC using the test piece of thickness 0.635cm.
(2) Drop weight impact strength (surface impact resistance)
Using a flat plate of 50 mm × 90 mm × 2.5 mm (thickness), the total absorbed energy at break at 23 ° C. was measured with a falling weight graphic impact tester manufactured by Toyo Seiki Seisakusho.

(3) Tensile strength, tensile elongation at break Measured at 23 ° C. based on a tensile test method according to ASTM D638.
(4) Flexural Modulus A three-point bending test was measured at 23 ° C. based on the bending test method according to ASTM D790.
(5) Surface appearance of molded product Using a flat plate of 50 mm × 90 mm × 2.5 mm (thickness), it was visually evaluated (◎: particularly good, ○: good, ×: with flaws).
(6) Gloss (gloss)
Using a flat plate of 50 mm × 90 mm × 2.5 mm (thickness), the gloss (gloss value) at the center of the flat plate was measured with a gloss meter GM-26D manufactured by Murakami Color Research Laboratory.

[Example 1]
Interlayer treatment with 40 parts of poly (2,6-dimethyl-1,4-phenylene) ether powder having an intrinsic viscosity (measured with chloroform solvent at 30 ° C.) of 0.43 dl / g and dimethyl hydrogenated ditallow ammonium ion Bentonite (trade name: BENTONR107, manufactured by US Elementis Specialties Co., Ltd., throughput: 101 meq / 100 g, d (001) 26Å), 10 parts ethylene bisstearyl amide (trade name: Kao Wax REB-FF, Kao Corporation )) After mixing 0.5 part and 1,6-di-t-butyl-4-methylphenol (BHT) 1 part, ZSK25 twin screw extruder with a vent port manufactured by Werner & Pfleiderer, Germany (knee) Skating with 3 discs of discs L, 5 discs of discs R, and 1 seal After being supplied from the drive side supply port of the new pattern) and sufficiently melted and kneaded, 50 parts of polystyrene H9405 made by PS Japan Co., Ltd. was supplied from the supply port provided in the middle of the cylinder, and the cylinder temperature was 280 ° C. The resin composition was obtained by melt-kneading at a screw rotation speed of 500 rpm. Table 1 shows the physical property test results of the resin composition.

[ Reference Example 1 ]
Of the poly (2,6-dimethyl-1,4-phenylene) ether powder of Example 1, 5 parts of poly (2,6-dimethyl-1,4-phenylene) ether modified with maleic anhydride [sodium Dimethyl hydrogenated ditallow replaced with maleic anhydride-modified poly (2,6-dimethyl-1,4-phenylene) ether 100% by weight 0.48% by weight obtained by titration of methylate] Example 1 was repeated except that the total amount of bentonite (trade name: BENTONR107) treated with ammonium ions was replaced with magnesium hydroxide (trade name: KISUMAR5P, manufactured by Kyowa Chemical Industry Co., Ltd.) surface-treated with a silane compound. A resin composition was obtained. Table 1 shows the physical property test results of the resin composition.

[ Example 2 ]
54 parts of poly (2,6-dimethyl-1,4-phenylene) ether powder used in Example 1, 5 parts of BENTONR107 used in Example 1, and 0 of Kao wax REB-FF used in Example 1 After mixing 5 parts and 1 part of BHT used in Example 1, using the twin screw extruder used in Example 1, the cylinder side was 280 ° C. and the screw rotation speed was 500 rpm. From the first supply port provided in the middle of the cylinder with 19 parts of polystyrene H9405 from PS Japan and 7 parts of polystyrene 685 from PS Japan. Then, 15 parts of bisphenol A-bis (diphenyl phosphate) is supplied from a second supply port provided in the middle of the cylinder. To obtain a resin composition by melt kneading. Table 3 shows the physical property test results of the resin composition.

[ Example 3 ]
Example 3 was repeated to obtain a resin composition, except that the Kao wax REB-FF of Example 2 was replaced with stearic acid amide (trade name: Amide AP-1, manufactured by Nippon Kasei Co., Ltd.). Table 4 shows the physical property test results of the resin composition.

[ Example 4 ]
Example 3 was repeated to obtain a resin composition, except that the Kao wax REB-FF of Example 2 was replaced with ethylenebiserucic acid amide (trade name: SLIPAX R, manufactured by Nippon Kasei Co., Ltd.). Table 4 shows the physical property test results of the resin composition.

[Comparative Example 1]
A resin composition was obtained by repeating the operation of Example 1 except that BENTONR107 of Example 1 and Kao wax REB-FF were removed. The physical property test results of the composition are shown in Table 1.

[Comparative Example 2]
Example 1 was repeated except that BENTONR107 of Example 1 was omitted to obtain a resin composition. The physical property test results of the composition are shown in Table 1.

[Comparative Example 3]
Example 1 was repeated except that the Kao wax REB-FF of Example 1 was removed to obtain a resin composition. The physical property test results of the composition are shown in Table 2.

[Comparative Example 4]
Example 2 was repeated except that the Kao wax REB-FF of Reference Example 1 was removed to obtain a resin composition. The physical property test results of the composition are shown in Table 2.

[Comparative Example 5]
Example 2 was repeated to obtain a resin composition, except that KISUMAR5P of Reference Example 1 was replaced with untreated talc (trade name: Hytron A, manufactured by Takehara Chemical Co., Ltd.). The physical property test results of the composition are shown in Table 2.

[Comparative Example 6]
Example 1 was repeated to obtain a resin composition, except that BENTONR107 of Example 1 was replaced with untreated montmorillonite (trade name: Kunipia F, manufactured by Kunimine Kogyo Co., Ltd.). The physical property test results of the composition are shown in Table 2.

[Comparative Example 7]
57 parts of poly (2,6-dimethyl-1,4-phenylene) ether powder used in Example 1, 0.5 part of Kao wax REB-FF used in Example 1, BHT 1 used in Example 1 After being mixed and fully melted and kneaded using the twin-screw extruder used in Example 1 at a cylinder temperature of 280 ° C. and a screw rotation speed of 500 rpm, supplied from the drive side supply port , PS Japan Co., Ltd. polystyrene H9405 19 parts, PS Japan Co., Ltd. polystyrene 685 8 parts supplied from the first supply port provided in the middle of the cylinder, melt-kneaded with the drive side supply, Further, 15 parts of bisphenol A-bis (diphenyl phosphate) was supplied from a second supply port provided in the middle of the cylinder and melt kneaded to obtain a resin composition. Table 3 shows the physical property test results of the composition.

[Comparative Example 8]
A resin composition was obtained by repeating Example 3 except that the Kao wax REB-FF of Example 2 was removed. Table 3 shows the physical property test results of the composition.

[Comparative Example 9]
Example 3 was repeated to obtain a resin composition, except that Kao wax REB-FF of Example 2 was replaced with zinc stearate (trade name: Die Wax Z, manufactured by Dainichi Chemical Industry Co., Ltd.). Table 3 shows the physical property test results of the composition.

The polyphenylene ether resin composition of the present invention has excellent heat resistance and rigidity, and has a very good balance between surface impact resistance, molded product surface gloss, tensile elongation and rigidity, and rework and recycling. Therefore, it can be widely used for home appliances OA equipment, office machines, information / communication equipment, electrical and electronic parts, building materials, daily necessities, toys, automobile parts and the like. For example, TV housing, TV chassis, TV parts such as deflection yoke, air conditioner parts,
Audio parts, TV game machine parts, monitor housing, monitor chassis, notebook PC housing, MD chassis, DVD chassis, DVD slim tray, in-vehicle CD
Changer tray, in-vehicle DVD deck frame, motor cover, gear box, LCD projector housing, PDA housing, antenna cover, printer housing, printer chassis, printer optical box, toner cartridge, paper feed tray, scanner housing, scanner frame, mobile phone Applications include telephone housing, digital camera peripheral parts, air purifier parts, smoke detector parts, automobile bumpers, fenders, door mirrors, door panels, wheel covers, side rear covers, spoilers, battery housings, battery trays, and the like.

Claims (4)

50 to 99.9 parts by weight of polyphenylene ether resin (a) and layered silicate mineral powder treated with an organic agent (b) 50 to 0.1 parts by weight, total amount of component (a) and component (b) 100 weights 0 to 150 parts by weight of styrene-based resin with respect to parts, and 0.005 to 5 parts by weight of fatty acid amide (d) with respect to 100 parts by weight of the total amount of components (a), (b) and (c) And a polyphenylene ether resin composition obtained by melt kneading. The component (b) is bentonite or hectorite treated with an alkyl-substituted quaternary ammonium ion that is an organic agent, the amount of treatment is in the range of 100 to 200 meq / 100 g, and measured by X-ray diffraction. 2. The polyphenylene ether resin composition according to claim 1 , wherein the d (001) plane has an interlayer distance of 20 mm or more. The polyphenylene ether resin composition according to claim 1 or 2 , wherein the component (d) is a higher saturated fatty acid bisamide having a carbon number of C8 to C25. The molded object shape | molded using the polyphenylene ether resin composition of Claims 1-3 .