JPH0433819B2 - - Google Patents

Description

[Detailed description of the invention]

BACKGROUND OF THE INVENTION The present invention relates to polyphenylene ether compositions, particularly polyphenylene ether compositions with improved moldability. Polyphenylene ether has excellent electrical and mechanical properties, a high heat distortion temperature, and self-extinguishing properties, and is attracting attention as an extremely useful engineering plastic material. However, it has low impact strength and is somewhat brittle. Furthermore, this resin has a high melting temperature and high melt viscosity, so
During molding, high molding temperatures and pressures are required, making molding by melting difficult. As one method for improving the moldability of polyphenylene ether, attempts have been made to blend it with other resins. For example, Tokuko Sho 43-17812
The publication describes blending a high impact polystyrene resin with polyphenylene ether. Although this composition has improved moldability and impact resistance, it is said that the moldability is still insufficient. Another method to improve the moldability of polyphenylene ether is to add a plasticizer to polyphenylene ether.
For example, Japanese Patent Publication No. 49-5220 describes an aromatic organic acid ester having good compatibility with polyphenylene ether resin, a polyester having an aromatic group, an organic phosphate ester having an aromatic group, and It has been shown that moldability can be improved by blending a compound selected from chlorinated aromatic hydrocarbons into polyphenylene ether or a composition of polyphenylene ether and styrenic resin. However, although the moldability of blending a plasticizer (for example, an organic phosphate ester having an aromatic group) with polyphenylene ether or a composition of polyphenylene ether and styrene resin is improved, performance will be significantly reduced. This is because the blended plasticizer is polyphenylene ether,
Alternatively, because it is extremely uniformly dispersed (molecularly dispersed) in a matrix made of a composition of polyphenylene ether and styrene resin, the glass transition temperature (Tg) of the matrix decreases, and as a result,
Heat resistance decreases. The present inventors considered that it is desirable for the additive to have the following properties in order to suppress this decrease in thermal performance (heat resistance) and improve moldability (fluidity). (1) During molding, that is, under the fluid state of the system, it must have good compatibility with matrix components and exhibit the same fluidity-improving effect as a plasticizer. (2) During use, i.e. under flow stopped conditions (matrix
(temperature range below Tg), it should phase separate from the matrix components and do not lower the Tg of the matrix. However, in order to prevent a decrease in mechanical strength, it is necessary that the interfacial adhesive force with the matrix is strong to a certain extent even though it undergoes phase separation with the matrix, and it must have affinity with the matrix. In order to develop a more concrete image of a compound that satisfies both (1) and (2) above, we have made various considerations and found that (a) During molding, that is, under the fluid state of the system, it acts as a plasticizer; A low-molecular compound with units that are compatible with matrix components (polyphenylene ether and styrene resin). (b) Below the molding temperature (below the Tg of the matrix)
Now, a compound that crystallizes and phase separates from the matrix. (c) Compounds with relatively strong polarity are desirable in order to ensure crystallization below the molding temperature.
A compound that has a unit that has an affinity with matrix components (polyphenylene ether and styrene resin) in order to maintain interfacial adhesion strength with the matrix even after crystallization and phase separation. We determined that a compound that satisfies the conditions (a), (b), and (c) above is preferable, and as a result of intensive study, we first proposed an invention in which a specific diamide compound is added (Japanese Patent Application Laid-Open No. 59-1999). −124950). The present invention improves this technology to further improve impact resistance and fluidity, and provides a resin composition with excellent oil resistance. [] Summary of the Invention The present invention provides a composition of (a) polyphenylene ether or polyphenylene ether and a styrene resin, and (b) an olefin polymer to which polar groups have been introduced to impart sensitivity. The object of the present invention is to provide a polyphenylene ether composition with improved moldability, characterized in that it is a mixture of a diamide compound represented by the following formula and a diamide compound represented by the following formula. ^R1 : a saturated or unsaturated chain hydrocarbon residue having a linear or side chain having 1 to 10 carbon atoms, an alicyclic hydrocarbon residue, or an aromatic hydrocarbon residue;
Alternatively, derivative residues thereof. R ² , R ³ : A saturated or unsaturated chain hydrocarbon residue having a linear or side chain having 1 to 10 carbon atoms, an alicyclic hydrocarbon residue, or an aromatic hydrocarbon residue, or this derivative residues such as. (R ² and R ³ may be the same or different) [] Specific description of the invention (1) Polyphenylene ether The polyphenylene ether used in the present invention has the general formula The ether oxygen atom of one unit is connected to the benzene nucleus of the next adjacent unit, n is at least 50, and Q is each independently hydrogen, halogen, Hydrocarbon groups containing no tertiary α-carbon atoms, halohydrocarbon groups having at least two carbon atoms between the halogen atom and the phenyl nucleus, hydrocarbonoxy groups and between the halogen atom and the phenyl nucleus Indicates a monovalent substituent selected from the group consisting of halogenhydrocarbonoxy groups having at least 2 carbon atoms. Typical examples of polyphenylene ether include poly(2,6-dimethyl-1,4 phenylene) ether, poly(2,6-diethyl-1,
4-phenylene) ether, poly(2-methyl-6-ethyl-1,4-phenylene) ether, poly(2-methyl-6-propyl-1,4)
-phenylene) ether, poly(2,6-dipropyl-1,4-phenylene) ether, poly(2-ethyl-6-propyl-1,4-phenylene) ether, poly(2,6-dibutyl-
1,4-phenylene)ether, poly(2,6
-dipropenyl-1,4-phenylene) ether, poly(2,6-dilauryl-1,4-phenylene) ether, poly(2,6-diphenyl-1,4-phenylene) ether, poly(2,
6-dimethoxy-1,4-phenylene) ether, poly(2,6-diethoxy-1,4-phenylene) ether, poly(2-methoxy-6-
Ethoxy-1,4-phenylene)ether, poly(2-ethyl-6-stearyloxy-1,
4-phenylene) ether, poly(2,6-dichloro-1,4-phenylene) ether, poly(2-methyl-6-phenyl-1,4-phenylene) ether, poly(2,6-dibenzyl-
1,4-phenylene) ether, poly(2-ethoxy-1,4-phenylene) ether, poly(2-chloro-1,4-phenylene) ether,
Poly(2,5-dibromo-1,4-phenylene) ether and the like. Also, 2,6-dimethylphenol and 2,3,
Copolymer of 6-triethylphenol, 2,6
-Copolymers such as a copolymer of dimethylphenol and 2,3,5,6-tetramethylphenol and a copolymer of 2,6-diethylphenol and 2,3,6-trimethylphenol can also be mentioned. . Furthermore, the polyphenylene ether used in the present invention is a polyphenylene ether defined by the above general formula and a styrene monomer (for example,
It also includes modified polyphenylene ethers such as those grafted with styrene, p-methylstyrene, α-methylstyrene, etc.). Methods for producing polyphenylene ethers corresponding to the above are known, for example, in US Pat.
Specifications of No. 3306874, No. 3306875, No. 3257357, and No. 3257358 and Japanese Patent Publication No. 52
-17880 and JP-A-50-51197. A group of polyphenylene ethers preferred for the purposes of the present invention are those with alkyl substituents in the two positions ortho to the ether oxygen atom and those with 2,6-dialkylphenols and 2,6-dialkylphenols.
Copolymers of 3,6-trialkylphenol and also graft polymers obtained by grafting styrene monomers onto these polyphenylene ether skeletons. (2) Styrenic resin The styrene resin used in the present invention includes homopolymers such as polystyrene, poly-α-methylstyrene, and poly-p-methylstyrene, butadiene rubber, styrene-butadiene copolymer, and ethylene-propylene. copolymers, high-impact polystyrene modified with various rubbers such as ethylene-propylene-diene terpolymers, styrene-butadiene copolymers, styrene-maleic anhydride copolymers, styrene-acrylonitrile copolymers, styrene-
Examples include acrylonitrile-butadiene copolymer, styrene-methyl methacrylate copolymer, etc., and these styrene resins are mixed in a proportion of 0 to 2000 parts by weight with respect to 100 parts by weight of polyphenylene ether resin. (3) Olefin-based polymer imparted with sensitivity Other polymers can be added to the polyphenylene ether or the composition of polyphenylene ether and styrene-based resin. The polymer to be added is an olefin polymer that has been made sensitive by introducing polar groups. Can be used. As a means for imparting sensitivity, unsaturated organic acids or their anhydrides (for example, acrylic acid, methacrylic acid, maleic acid, itaconic acid, and their anhydrides, etc.) or unsaturated silanes represented by the following formula may be used to impart sensitivity to the polymer. Compounds (e.g., vinyltrimethoxysilane, vinyltriethoxysilane, vinyltriacetoxysilane, γ-methacryloxypropyltrimethoxysilane, propenyltrimethoxysilane, etc.) RSiR′nY _3-o (where R is ethylenically unsaturated hydrocarbyl or a hydrocarbyloxy group, R' is an aliphatic saturated hydrocarbyl group, Y is a hydrolyzable organic group, and n is 0, 1, or 2. When there are multiple Y's, they do not have to be the same.) or ionomerization by metal ionizing some of the carboxyl groups attached to the graft chains of the resinous polymer graft-modified with the above-mentioned unsaturated organic acid or its acid anhydride. It can be done with Olefin polymers imparted with sensitivity can also be obtained by block or random polymerization of ethylene and vinyl monomers or vinyl silanes having polar groups such as unsaturated organic acids such as acrylic acid or esters thereof. I can do it. Further, when using a polymer imparted with sensitivity, it is preferable to add an inorganic filler. When a sensitized polymer and an inorganic filler are used together, the sensitized polymer is dispersed in the matrix of polyphenylene ether or a composition of polyphenylene ether and styrene resin, imparting sensitivity. A special structure is formed in which inorganic fillers are selectively filled in the polymer, and excellent physical properties such as mechanical strength can be obtained. As the inorganic filler, inorganic powders known as fillers for synthetic resins, such as titanium oxide, zinc oxide, talc, clay, calcium carbonate, and silica, can be used. The average particle size of the inorganic filler is preferably about 0.05 to 1.0μ, and is 0.5 to 60% by weight, preferably 1 to 45% by weight, based on the entire composition obtained by mixing.
Weight percentages are used. Note that the olefin-based polymer imparted with sensitivity may be used after being diluted with a normal polyolefin that does not have sensitivity. The amount added is based on the polymer (polyphenylene ether, styrenic resin, other added polymers)
The olefinic polymer imparted with sensitivity is generally used in an amount of 0.1 to 50% by weight, preferably 1 to 30% by weight, based on the total amount of the olefin polymer. (3) Addition of other polymers Other rubber-like polymers can be added to the composition of the present invention for the purpose of improving impact resistance. The rubbery polymers to be added include natural or synthetic rubbery elastomeric polymers, such as natural rubber, polyisoprene, polybutadiene, copolymers of styrene and conjugated dienes such as butadiene (including block copolymers). ), ethylene-
A propylene rubbery copolymer, an ethylene-propylene-nonconjugated diene rubbery terpolymer, etc. can be used. Further, as other polymers, polyphenylene ether or polyolefin graft-polymerized with a styrene resin can also be used. Polyphenylene ether graft polyolefin is a glycidylated polyphenylene ether obtained by reacting with epichlorohydrin.
Polyolefins having a carboxyl group or an acid anhydride group in the main chain or side chain, such as ethylene/acrylic acid copolymer, ethylene/methacrylic acid copolymer, maleic anhydride-modified polypropylene, maleic anhydride-modified polyethylene, maleic anhydride-modified It can be obtained by grafting onto ethylene/vinyl acetate copolymer or the like. In addition, polyphenylene ether graft polyolefins are polyolefins having glycidyl groups in their side chains, such as ethylene/glycidyl methacrylate copolymers, ethylene/vinyl acetate,
It can also be obtained by grafting polyphenylene ether onto a glycidyl methacrylate copolymer or the like. The molecular weight of the polyphenylene ether part of the graftomer is preferably 5,000 to 100,000, and the number average molecular weight of the polyolefin chain is 1,000 to 100,000.
Although those having a molecular weight of 3,000 to 50,000 are particularly preferred. Polystyrene-grafted polyolefins include styrene-based copolymers having a carboxylic acid group or cyclic acid anhydride group in the main chain or side chain of polystyrene, such as styrene/maleic anhydride copolymer, styrene/citraconic anhydride copolymer, etc. Coalescence, styrene/itaconic anhydride copolymer, styrene/asconitic anhydride copolymer,
Styrene/acrylic acid copolymer, styrene/methacrylic acid copolymer, etc. are combined with polyolefins having a glycidyl group in the side chain, such as ethylene/glycidyl methacrylate copolymer, ethylene/vinyl acetate/glycidyl methacrylate copolymer, etc. It can be obtained by grafting. (4) Diamide compound The diamide compound used in the present invention is represented by the following formula. R ¹ : A saturated or unsaturated chain hydrocarbon residue having a linear or side chain having 1 to 10 carbon atoms, an alicyclic hydrocarbon residue, an aromatic hydrocarbon residue, or a derivative residue thereof. Base. R ² , R ³ : Saturated or unsaturated chain hydrocarbon residue having a linear or side chain having 1 to 10 carbon atoms, alicyclic hydrocarbon residue, aromatic hydrocarbon residue, or the like Derivative residues of. (R ² and R ³ may be the same or different) Examples of R ¹ include a methylene group, an ethylene group, a trimethylene group, a propylene group, a tetramethylene group, an isobutylene group, a pentamethylene group, a cyclopentylene group, hexamethylene group,
Cyclohexylene group, octamethylene group, decamethylene group, phenylene group. Examples of R ² and R ³ include a methylene group, an ethyl group, a propyl group, an isopropyl group, a butyl group,
Examples include isobutyl group, t-butyl group, pentyl group, isopentyl group, cyclopentyl group, hexyl group, isohexyl group, cyclohexyl group, heptyl group, octyl group, decyl group, and phenyl group. R ¹ , R ² and ³ can have one or more substituents, and the following can be used as the substituents, for example. -R ⁴ (R ⁴ : C ₁ - C ₈ hydrocarbon group) -X (X: halogen such as Cl, Br, F, etc.) - OR ⁵ (R ⁵ : H or C ₁ - C ₈ hydrocarbon group) -NR ⁶ R ⁷ (R ⁶ , R ⁷ : H or C ₁ to _{C 8} hydrocarbon group) -OCOR ⁸ (R ⁸ : H or C ₁ to C ₈ hydrocarbon group) -COOH or its metal salt or , acid anhydride group -SO ₃ H -NO ₂ -NO -CN The diamide compound of the present invention is intended to be compatible with the matrix component in the fluid state during molding, and to crystallize and phase separate from the matrix component during use. It is something to do. Therefore, it is desirable that the melting point of the diamide compound of the present invention is slightly lower than the molding temperature. Therefore, the molding temperature is set between the flow start temperature of the system (matrix Tg) as the lower limit and the system decomposition start temperature as the upper limit. The glass transition point (Tg) of a mixture of polyphenylene ether and styrene resin varies depending on the composition ratio, but
In the case of a composition consisting of high-impact polystyrene (99 parts), the Tg is 103°C, so the molding temperature for a composition of polyphenylene ether and styrene resin is generally set above this temperature. Ru. In addition, polyphenylene ether generally begins to decompose at around 350°C in air.
From the above, molding is generally carried out between 105°C and 350°C. Therefore, the diamide compound used in the present invention desirably has a melting point within the range of 105 to 350°C. The amount added is preferably 0.1 to 25 parts by weight, preferably 0.5 to 20 parts by weight, and particularly preferably 2 to 10 parts by weight, based on a total of 100 parts by weight of all polymers. (5) Additives In the present invention, other additives may be used depending on the purpose. Additives include stabilizers, plasticizers, flame retardants,
There are various inorganic fillers, mold release agents, colorants, etc. The polyphenylene ether composition of the present invention has the advantage of improved fluidity, and has the advantage of being easy to mold even when other additives are added. Additives most commonly used in the polyphenylene ether composition of the present invention include various stabilizers, colorants, and flame retardants. Commonly used flame retardants include, for example, trimethyl phosphate, triethyl phosphate, tripropyl phosphate, tributyl phosphate, tripentyl phosphate, trihexyl phosphate, triphenyl phosphate, tricresyl phosphate, and trixylene. phosphate, tris-(chloroethyl)-phosphate, tris-(dichloroethyl)-phosphate, tris-(bromoethyl)phosphate,
Phosphate esters such as tris-(dibromoethyl)-phosphate, tris-(chlorophenyl)-phosphate, tris-(dichlorophenyl)-phosphate, tris-(bromophenyl)-phosphate, tris-(dibromophenyl)-phosphate , furthermore, halogenated aromatic derivatives such as hexabromobenzene, pentabromotoluene, decabromobiphenyl, and also triphenylantimony, tris(bromophenyl)antimony, tris-(dibromophenyl)
Examples include antimony compounds such as antimony and antimony oxide, and halides such as halogenated diphenyl carbonate, halogenated cyclodecane, halogenated phthalic anhydride, and halogenated polystyrene.
Although these flame retardants can be used alone, they may also be used as a mixture of two or more. [] Examples The present invention will be specifically described below with reference to Examples. Examples 1 to 7, Comparative Examples 1 to 3, A Poly-2,6-dimethyl-1,4-phenylene ether (manufactured by Mitsubishi Yuka Co., Ltd., intrinsic viscosity 0.47 in chloroform at 30°C), polystyrene (Mitsubishi Monsanto Co., Ltd.) (manufactured by Mitsubishi Yuka Co., Ltd., HF-77), maleic anhydride grafted ethylene/propylene copolymer (manufactured by Mitsubishi Yuka Co., Ltd., maleic anhydride content 1.5wt%), styrene-
Butadiene copolymer (manufactured by Nippon Gosei Co., Ltd., 1502),
Precipitated calcium carbonate (average particle size 0.2μ) and N,N'-diphenyladipate diamide were mixed in the proportions shown in Table 1, homogenized using a super mixer, and then Using a screw extruder (PCM-450/), the mixture was melt-kneaded at 280°C, cooled and solidified to form pellets. The pellets are processed using a Nippon Steel N-100 injection molding machine.
Using a spiral mold with a thickness of 2 mm and a width of 8 mm, the flow distance (spiral flow length) was measured under conditions of a temperature of 300° C. and an injection pressure of 1100 Kg/cm ² . In addition, a predetermined test piece was injection molded using the same molding machine, and the heat distortion temperature and impact resistance were measured. These results are referred to as Examples 1 to 7, blank test Comparative Examples 1 to 3 excluding N,N'-diphenyladipic acid diamide, and test excluding maleic anhydride graft-ethylene propylene copolymer (Comparative Example The results of A) are shown in Table 1 and Figure 1. FIG. 1 illustrates the results of Table 1 as a relationship between fluidity (spiral flow length) and heat resistance (heat distortion temperature). In this figure, N,
Curve E connects the results obtained without using N'-diphenyladipic acid diamide (Comparative Examples 1, 2, and 3). When N,N'-diphenyladipic acid diamide is not used, poly-2,6-
The fluidity of this composition can be changed by changing the mixing ratio of dimethyl-1,4-phenylene ether and polystyrene, but curve E
It just moves above. On the other hand, when 5 parts, 7 parts, and 10 parts of N,N'-diphenyladipic acid diamide were added, curves F (Examples 1 and 2),
Move G (Examples 3 to 5) and H (Examples 6 and 7).
These curves F, G, and H are located to the upper right of curve E, clearly indicating that the composition of the present invention has greatly improved fluidity while maintaining heat resistance. do.

[Table] Examples 8, 9, Comparative Examples 4, 5, B Poly-2,6-dimethyl-1,4-phenylene ether (manufactured by Mitsubishi Yuka Co., Ltd., in chloroform, 30°C
Polystyrene (manufactured by Mitsubishi Monsanto, HF-77), ethylene-vinyl acetate-glycidyl methacrylate copolymer (manufactured by Mitsubishi Yuka, MFR=4, vinyl acetate content 5wt%, glycidyl methacrylate) N,
N'-diphenyladipic acid diamide, respectively,
After mixing in the proportions shown in Table 2 and homogenizing with a super mixer, melt-kneading was performed at 280°C using a twin-screw extruder (PCM-45O/) manufactured by Ikegu Iron Works Co., Ltd.
After allowing the graft reaction to proceed in a molten state, it was pelletized. This pellet was prepared in the same manner as in Example 1.
The flow distance (spiral flow length), impact resistance, and heat distortion temperature were measured. These results were used as Examples 8 and 9 for blank tests (Comparative Example 4,
5) and a test excluding the olefin polymer imparted with sensitivity (Comparative Example B) are shown in Table 2 and FIG. FIG. 4 illustrates the results of Table 2 as a relationship between fluidity (spiral flow length) and heat resistance (heat distortion temperature). N,
The results obtained without using N'-diphenyladipic acid diamide are curve I in Figure 4 (Comparative Examples 4 and 5).
and the composition of the present invention has curve J (Example 8,
9) It clearly shows that fluidity is greatly improved while maintaining heat resistance.

[Table] Example 10, Comparative Example 6 Poly-2,6-dimethyl-1,4-phenylene ether (manufactured by Mitsubishi Yuka Co., Ltd., intrinsic viscosity in chloroform at 30°C 0.47), polystyrene (manufactured by Mitsubishi Monsanto Co., Ltd., HF -77), maleic anhydride graft-ethylene/propylene copolymer (Mitsubishi Yuka Co., Ltd., maleic anhydride content 1.5wt%), styrene-
Butadiene copolymerization (manufactured by Japan Synthetic Rubber Co., Ltd., 1502),
Precipitated calcium carbonate (average particle size 0.2μ), flame retardant triphenyl phosphate, and N,
N'-diphenyladipic acid diamide, respectively,
After mixing the composition shown in Table 7 and homogenizing it with a super mixer, it was mixed using a twin-screw extruder (PCM
The mixture was melt-kneaded at 280°C using -45O/), solidified by cooling, and pelletized. The pellets are processed using a Nippon Steel N-100 injection molding machine.
Using a spiral mold with a thickness of 2 mm and a width of 8 mm, the flow distance (spiral flow length) was measured under conditions of a temperature of 300° C. and an injection pressure of 1100 Kg/cm ² . Furthermore, a specified test piece was injection molded using the same molding machine, and its flame retardance was evaluated in accordance with the US UL standard Subject 94. The results are shown in Table 3 together with the results of a blank test in which N,N'-diphenyladipic acid diamide was not used. As can be seen from Example 10 and Comparative Example 6 in Table 3, the addition of N,N'-diphenyladipic acid diamide greatly improves fluidity, but the addition of It can be seen that this does not inhibit the flame retardant effect of . This example shows that the present invention is extremely effective in realizing a flame retardant composition with good fluidity.

[Table] Example 11 50 parts by weight of poly-2,6-dimethyl-1,4-phenylene ether (manufactured by Mitsubishi Yuka Co., Ltd., intrinsic viscosity 0.50 in chloroform at 25°C) and high impact polystyrene (manufactured by Asahi Dow Co., Ltd.) , 475D), 5 parts by weight of maleic anhydride graft-ethylene propylene copolymer (manufactured by Mitsubishi Yuka, maleic anhydride content 1.5% by weight), and N,N'-dihexyladipate diamide (Yamato Scientific). 5 parts by weight (melting point: 158°C, measured using Model MP-21) were melt-kneaded for 7.5 minutes at 260°C using a Brabender. After kneading, the melt index (250℃, 10Kg load) indicating moldability (fluidity) was measured, and a specified test piece was made using a press, and the heat distortion temperature was measured (18.6Kg/cm ² loads). Table 4 also shows the results obtained without adding the diamide compound and the results obtained when 5 parts by weight of triphenyl phosphate was added in place of N,N'-dihexiaadipic acid amide. Example 12 Instead of N,N'-dihexyladipic acid diamide, N,N'-dihexylterephthalic acid diamide (manufactured by Yamato Kagaku, melting point measured with MP-21 type:
Table 4 shows the results obtained in the same manner as in Example 11 except that 5 parts by weight of 204°C) were added. Example 13 Instead of N,N'-dihexyladipic acid diamide, N,N'-diphenylsuccinic acid diamide (manufactured by Yamato Kagaku, melting point measured with MP-21 type: 226
Table 4 shows the results obtained in the same manner as in Example 11, except that 5 parts by weight of C. Example 14 Instead of N,N'-dihexyladipic acid diamide, N,N'-dihexylsebacic acid diamide (manufactured by Yamato Kagaku, melting point measured with MP-21 type: 196
Table 4 shows the results obtained in the same manner as in Example 11, except that 5 parts by weight of C.

【table】 [Brief explanation of drawings]

FIG. 1 and FIG. 2 are diagrams showing the relationship between the spiral flow length and heat distortion temperature of a polyphenylene ether composition prepared by a conventional method and a polyphenylene ether composition of the present invention.

Claims (1)

[Scope of Claims] 1. A composition of (a) polyphenylene ether, or polyphenylene ether and styrene resin, and (b) an olefin polymer imparted with sensitivity by introducing a polar group. , and a diamide compound represented by the following formula: A polyphenylene ether composition with improved moldability. ^R1 : a saturated or unsaturated chain hydrocarbon residue having a linear or side chain having 1 to 10 carbon atoms, an alicyclic hydrocarbon residue, or an aromatic hydrocarbon residue;
Alternatively, derivative residues thereof. R ² , R ³ : A saturated or unsaturated chain hydrocarbon residue having a linear or side chain having 1 to 10 carbon atoms, an alicyclic hydrocarbon residue, or an aromatic hydrocarbon residue, or this derivative residues such as. (R ² and R ³ may be the same or different)