JP3293496B2 - Method for producing thermoplastic resin composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a method for producing a thermoplastic resin composition containing polyphenylene ether and polyamide. More specifically, the present invention relates to a method for producing a thermoplastic resin composition containing polyphenylene ether and polyamide having excellent impact resistance, tensile properties, melt flow properties, and the like, using an extruder having three or more supply ports.

[0002]

2. Description of the Related Art Polyphenylene ether (PPE) is
It is a thermoplastic resin with excellent properties such as mechanical properties, heat resistance and dimensional stability. However, PPE alone has remarkably poor impact properties and solvent resistance, and also has poor meltability due to its high melt viscosity. On the other hand, polyamide is a thermoplastic resin having excellent mechanical properties, solvent resistance, workability, etc., but has poor heat resistance and poor dimensional stability due to large water absorption. The mechanical properties are significantly reduced due to water absorption. Proposals have been made to blend the two in order to compensate for the disadvantages of these resins. However, a simple blend alone loses the good mechanical properties of both. Therefore, various attempts have been made to add various compatibilizers at the time of blending the PPE and the polyamide to improve the dispersibility and achieve the improvement of the mechanical properties. Such a method is disclosed in JP-B-60-11966 and JP-B-61.
-10494, JP-A-59-66452,
The method is disclosed in JP-A-56-49753.

[0003] In order to produce an alloy of PPE and polyamide, it is common to mix PPE and polyamide in an extruder at the same time and mix them in a molten state. However, the mechanical properties of the molded article obtained by simply mixing PPE and polyamide are unsatisfactory. For example, in the case of US Pat. No. 4,338,421, PP
E and polyamide are 1 to 1 at a temperature of 200 to 330 ° C.
Mix with each other for 0 minutes. The molding material obtained by this method does not have satisfactory mechanical properties and the like. Also, in U.S. Pat. No. 4,732,938 and U.S. Pat. No. 4,943,399, in the first zone of the extruder, PPE is used.
And kneading with a compatibilizer and a polyamide in the second zone. At this time, in the second zone, 250 is used to sufficiently melt the polyamide.
The temperature is set to ℃ or more. However, once the polyamide is melted, its viscosity is significantly lower than that of polyphenylene ether. Therefore, when kneaded at such a high temperature, there is a problem that the dispersion state becomes poor.

Several studies have been made on kneading methods of a well-balanced blend in order to overcome such problems. Examples thereof include a method in which nylon 66 is melt-kneaded with polyphenylene ether and a compatibilizer, and the resulting mixture is further melt-kneaded with another polyamide (for example, JP-A-62-270654). Alternatively, a part of another kind of polyamide is melt-kneaded in advance with an impact resistance improver, and the resulting mixture and the remaining polyamide and polyphenylene ether are melt-kneaded (for example, see JP-A-63-2).
Further, a modified polyphenylene ether, a specific rubber component and a small amount of polyamide having a high solution relative viscosity are melt-kneaded in advance, and then a large amount of polyamide having a solution relative viscosity of 0.2 or less is kneaded. (Japanese Unexamined Patent Publication No. 4-198354).

[0005] However, even if these methods are used, the dispersed particle size of the obtained resin composition may not be sufficiently small, and the method of kneading two or more times causes oxidative deterioration of PPE and rubber. In some cases, satisfactory physical properties could not be obtained.

[0006]

In recent years, in automobile exterior parts, electric parts, and electric / electronic parts, products aiming at weight reduction have become thinner and larger, and the performance required for materials has been high flow. There is a demand for compatibility between properties and high physical properties. In general, high fluidity in an alloy of PPE and polyamide is addressed by lowering the molecular weight of the polyamide as the matrix resin or increasing the amount of the polyamide. However, if high fluidization is simply performed by only such a measure, a conventional kneading method, for example, kneading of PPE and a compatibilizer in the first zone of the extruder and polyamide in the second zone of the extruder is called. In the two-feed method or the like, the dispersion particle size of PPE or the like is enlarged, and the impact characteristics and the tensile characteristics are significantly reduced.
Further, even if the same or different polyamides disclosed in the above-mentioned prior art are melt-kneaded with PPE in advance, and then the remaining polyamide is melt-kneaded, the method of performing kneading two or more times requires the mixing of PPE and rubber. Oxidation degradation may occur, and values such as Izod impact strength and tensile elongation were not always satisfactory.

SUMMARY OF THE INVENTION An object of the present invention is to provide a thermoplastic resin composition containing a polyphenylene ether and a polyamide, which solves the above-mentioned problem and has high physical properties such as a low Izod impact strength and a high tensile elongation, with little oxidation deterioration of the resin. It is to provide a method.

[0008]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that polyphenylene ether and a compatibilizing agent are first used by using an extruder having three or more supply ports. By kneading and kneading from the supply port, a part of polyamide is kneaded and charged from the second supply, and then the remaining polyamide is kneaded and charged from the third supply port.
The present inventors have found that a material having high Izod impact strength, high tensile elongation, and the like can be obtained, and reached the present invention.

That is, the present invention relates to (A) 5 to 90% by weight of polyphenylene ether (B) B-1 polyamide-1 B-2 polyamide-2 in total 95 to 10% by weight (where (B-1) And (B-2) are each 1% by weight or more, and (B-1) and (B-2) may be the same type or different types.) (C) C-1 Rubber-1 C-2 Rubber-2 C-3 Rubber-3 (where the component (C) is 0 to 100 parts by weight with respect to 100 parts by weight of the component (A) + (B), -1), (C-2) and (C-3) may be of the same type or of different types.) (D) Compatibilizer of polyamide and polyphenylene ether 0.01 to 30% by weight In producing a resin composition consisting of (I) The compatibilizer of the component (D), the polyphenylene ether of the component (A), and the rubber-1 of the component (C-1) are fed from the first supply port of the extruder using an output machine and melted. Kneading is performed to produce a functionalized polyphenylene ether, and (ii) the polyamide-1 of the component (B-1) and the rubber-2 of the component (C-2) are fed from the second supply port. The obtained intermediate composition is melt-kneaded, and (iii) polyamide-3 as the component (B-2) and rubber-3 as the component (C-3) are fed from the third supply port. ), And a method for producing a thermoplastic resin composition, which is characterized by performing melt kneading with the intermediate composition obtained in the above step.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The polyphenylene ether (A) used in the present invention means that one or two or more phenolic compounds represented by the following general formula (1) are prepared by using an oxidative coupling catalyst, and It is a polymer obtained by oxidative polymerization with a gas.

[0011]

(Wherein R ₁ , R ₂ , R ₃ , R ₄ and R ₅
Each represents the same or different groups or atoms selected from hydrogen, a halogen atom, a hydrocarbon group, a substituted hydrocarbon group, a hydrocarbon oxy group and a substituted hydrocarbon oxy group,
One of them is always a hydrogen atom. )

In the above general formula, R ₁ , R ₂ , R ₃ , R
Specific examples of ₄ and R ₅ include hydrogen, chlorine, bromine, fluorine, iodine, methyl, ethyl, n- or iso-propyl, pri-, sec- or t-butyl, chloroethyl, hydroxyethyl, phenylethyl, benzyl,
Examples include hydroxymethyl, carboxyethyl, methoxycarbonylethyl, cyanoethyl, phenyl, chlorophenyl, methylphenyl, dimethylphenyl, ethylphenyl, allyl and the like.

Specific examples of the general formula (1) include phenol, o-, m-, p-cresol, 2,6-, 2,
5-, 2,4- or 3,5-dimethylphenol,
2-methyl-6-phenylphenol, 2,6-diphenylphenol, 2,6-diethylphenol, 2-methyl-6-ethylphenol, 2,3,5-, 2,3
6- or 2,4,6-trimethylphenol, 3-
Methyl-6-t-butylphenol, thymol, 2-methyl-6-aliphenol and the like can be mentioned. Phenol compounds other than the above general formula, for example, bisphenol A, tetrabromobisphenol-A, reasorcin,
Copolymerization of a polyvalent hydroxy aromatic compound such as hydroquinone or a novolak resin with the above general formula is also good.

Preferred among these compounds are homopolymers of 2,6-dimethylphenol or 2,6-diphenylphenol and a large amount of 2,6-dimethylphenol or 2,6-diphenylphenol.
A copolymer of xylenol and a small amount of 3-methyl-6-t-butylphenol or 2,3,6-trimethylphenol may be used.

The oxidation coupling catalyst used for oxidative polymerization of the phenol compound is not particularly limited, and any catalyst having a polymerization ability can be used. The method for producing such a polyphenylene ether-based resin is as follows:
For example, U.S. Pat.
Nos. 6875, 3257357 and JP-B-52-17880, JP-A-50-5.
No. 1197 and JP-A-1-304119.

Specific examples of the polyphenylene ether in the present invention include poly (2,6-dimethyl-1,4-phenyl ether) and poly (2,6-diethyl-1,4-phenyl ether).
Phenyl 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 -Butyl-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-methyl-6-phenyl-1,4-phenylene ether), poly (2-methyl-1) , 4-phenylene ether), poly (2-ethoxy-1,4-phenylene ether), poly (2-chloro-1,4-phenylene ether), poly (3-methyl-6-t-butyl-1,4) -Phenylene ether), poly (2,6-dichloro-1,4)
-Phenylene ether), poly (2,5-dibromo-)
Examples thereof include 1,4-phenylene ether), poly (2,6-dibenzyl-1,4-phenylene ether), and various copolymers containing plural kinds of repeating units constituting these polymers. Some copolymers include 2,3,6-
Copolymers of polysubstituted phenols such as trimethylphenol and 2,3,5,6-tetramethylphenol and 2,6-dimethylpheninol are also included.

Preferred among these polyphenylene ether resins are poly (2,6-dimethyl-1,4-
(Phenylene ether) and a copolymer of 2,6-dimethylphenol and 2,3,6-trimethylphenol or 2,6-dimethylphenol and 3-methyl-6-t-
There are butylphenol copolymers and the like.

The molecular weight of the polyphenylene ether that can be used in the present invention is not necessarily defined because its preferred range varies depending on the purpose, but it is generally the intrinsic viscosity measured at 30 ° C. in chloroform. It is 0.1 to 0.7 dl / g, more preferably 0.2 to 0.6 dl / g.

Incidentally, the polyphenylene ether referred to in the present invention includes styrene,
Graft-modified styrene monomers such as α-methylstyrene are also included.

The polyamide (B) used in the present invention includes a lactam having three or more rings, a polymerizable ω-amino acid,
A polyamide obtained by polycondensation of a dibasic acid and a diamine can be used. Specifically, ε-caprolactam, aminocaproic acid, enantholactam, 7-
Polymers such as aminoheptanoic acid and 11-aminoundecanoic acid, diamines such as hexamethylenediamine, nonamethylenediamine, undecamethylenediamine, dodecamethylenediamine, and metaxylylenediamine, and terephthalic acid, isophthalic acid, adipic acid, and sebacin Examples include a polymer obtained by polycondensation with a dicarboxylic acid such as an acid, dodecane dibasic acid, and glutaric acid, and a copolymer thereof.

Specific examples thereof include aliphatic polyamides such as polyamide 6, polyamide 6,6, polyamide 4,6, polyamide 6,10, polyamide 11, polyamide 12, and polyamide 6,12, polyhexamethylenediamine terephthalamide, Examples thereof include aromatic polyamides such as polyhexamethylene diamine phthalamide and xylene group-containing polyamide, and these can also be used as a mixture or copolymer of two or more.

In the present invention, the compounding ratio of (A) polyphenylene ether to (B) polyamide is 5 to 90 wt% of polyphenylene ether and 95 to 10 wt% of polyamide.
% Range. Preferably, the former is 10 to 80 wt%
On the other hand, the latter is 90 to 20 wt%, more preferably,
The former is 20 to 60 wt%, while the latter is 80 to 40 wt%
% Range.

The rubber (C) in the present invention refers to natural and synthetic polymer materials which are elastic at room temperature, and is used for improving impact characteristics.

Specifically, ethylene-propylene copolymer rubber, ethylene-propylene-nonconjugated diene copolymer rubber, ethylene-butene-1 copolymer rubber, ethylene-propylene copolymer rubber
α, β unsaturated carboxylic acid alkyl ester-maleic anhydride copolymer, polybutadiene, styrene-butadiene block copolymer rubber, styrene-butadiene-styrene block copolymer, styrene-butadiene random copolymer rubber, partially hydrogenated Styrene-butadiene-styrene block copolymer rubber, partially hydrogenated styrene-butadiene random copolymer rubber, styrene-isoprene block copolymer rubber, partially hydrogenated styrene-isoprene block copolymer rubber, polyurethane rubber, styrene graft-
Ethylene-propylene-non-conjugated diene copolymer rubber, styrene graft-ethylene-propylene copolymer rubber,
Styrene / acrylonitrile-graft-ethylene-propylene-non-conjugated diene copolymer rubber, styrene / acrylonitrile-graft-ethylene-propylene copolymer rubber or the like, or a mixture thereof is used, but is not limited thereto. Further, a modified rubber modified with a functional monomer including another acid or epoxy may be used.

The compounding amount of the rubber (C) is 0 to 100 parts by weight, preferably 0 to 50 parts by weight, based on 100 parts by weight of the total of the polyphenylene ether (A) and the polyamide (B). If the amount of the rubber exceeds 100 parts by weight, the decrease in rigidity of the resin composition is extremely undesirable.

Next, the (D) compatibilizer referred to in the present invention is:
A compound to improve the affinity between (A) the polyphenylene ether and (B) the polyamide resin and to improve the compatibility between the two.

As the compatibilizer, at least one compound selected from the following groups I to Q is preferable. I: an epoxy compound having no ethylenic or acetylenic unsaturated bond. J: Compound having both (i) at least one unsaturated group, that is, a carbon-carbon double bond or a carbon-carbon triple bond, and (ii) at least one polar group in the same molecule. K: oxidized polyolefin wax. L: In the molecular structure, (i) a carbon atom via a bridge of oxygen, and (ii) a function selected from at least an ethylenic carbon-carbon double bond or a carbon-carbon triple bond and / or an amino group and a mercapto group. A silane compound having both of the above groups, wherein the functional group is not directly bonded to a silicon atom. M: (i) (OR) (where R is hydrogen, alkyl, aryl, acyl or carbonyldioxy group) and (ii) carboxylic acid, acid halide,
Acid anhydride, acid halide anhydride, acid ester, acid amide,
A compound having at least two identical or different functional groups selected from imide, amino and salts thereof. N: Compound having both (i) an acid halide group and (ii) at least one carboxylic acid, carboxylic anhydride, acid ester or acid amide group in the same molecule. O: a copolymer having units of a vinyl aromatic compound and units of α, β-unsaturated dicarboxylic acid or dicarboxylic anhydride, or a unit of a vinyl aromatic compound and α, β-
A copolymer having units of an imide compound of an unsaturated dicarboxylic acid. P: polyphenylene ether functionalized with at least one compatibilizer selected from the group consisting of IJ and LN. Q: A composition obtained by melt-kneading a polyphenylene ether functionalized with at least one compatibilizer selected from the group I to O and a small amount of polyamide.

Examples of the compatibilizer of Group I used in the present invention include (1) a condensate of polyhydric phenol (for example, bisphenol A, tetrabromobisphenol A, resorcinol) and epichlorohydrin, and (2) polyhydric phenol. And a condensate of epilic hydrin with an alcohol (eg, ethylene glycol, propylene glycol, polyethylene glycol, etc.).

The J group compatibilizer used in the present invention includes an unsaturated group, ie, a carbon-carbon double bond or a carbon-carbon triple bond; a polar group, ie, an amide bond contained in a polyamide resin; Is a compound having in the same molecule a functional group having an affinity for a carboxyl group and an amino group and a chemical reactivity present in the same molecule.

Examples of such a functional group include a carboxylic acid group, a group derived from a carboxylic acid, that is, various salts and esters substituted with a hydrogen atom or a hydroxyl group of a carboxyl group,
Functional groups such as acid amides, acid anhydrides, imides, acid azides, acid halides, or oxazolines, nitriles, epoxy groups, amino groups, hydroxyl groups, or isocyanate groups; and unsaturated and polar groups. Ie, unsaturated carboxylic acids, unsaturated carboxylic acid derivatives, unsaturated epoxy compounds, unsaturated alcohols, unsaturated amines, and unsaturated isocyanates.

Specifically, maleic acid, maleic anhydride, fumaric acid, maleimide, maleic hydrazide,
Examples include a reaction product of maleic anhydride and a diamine.

Also, methylnadic anhydride, dichloromaleic anhydride, maleic amide, itaconic acid, itaconic anhydride, soybean oil, tung oil, castor oil, linseed oil, hempseed oil, cottonseed oil, sesame oil, rapeseed oil, peanut oil, Natural oils and fats such as camellia oil, olive oil, coconut oil, sardine oil, epoxidized natural oils and fats, acrylic acid, butenoic acid, crotonic acid, vinyl acetic acid, methacrylic acid, pentenoic acid, angelic acid, tiglic acid, 2-pentenoic acid, 3-pentenoic acid, α-ethylacrylic acid, β-methylcrotonic acid, 4-pentenoic acid, 2-hexene, 2-methyl-2-pentenoic acid, 3-
Methyl-2-pentenoic acid, α-ethylcrotonic acid, 2.
2-dimethyl-3-butenoic acid, 2-heptenoic acid, 2-octenoic acid, 4-decenoic acid, 9-undecenoic acid, 10-undecenoic acid, 4-dodecenoic acid, 5-dodecenoic acid, 4-tetradecenoic acid, 9 -Tetradecenoic acid, 9-hexadecenoic acid, 2-octadecenoic acid, 9-octadecenoic acid, eicosenoic acid, docosenoic acid, erucic acid, tetracosenoic acid, mycolipenic acid, 2,4-hexadienoic acid, diallylacetic acid, geranium acid, 2.4 -Decadienoic acid, 2,4-dodecadienoic acid, 9.12-hexadecadienoic acid, 9.12-octadecadienoic acid, hexadecatrienoic acid, eicosadienoic acid, eicosatrienoic acid, eicosatetraenoic acid,
Ricinoleic acid, eleostearic acid, oleic acid, eicosapentaenoic acid, erucic acid, docosadienoic acid, docosatrienoic acid, docosatetraenoic acid, docosapentaenoic acid, tetracosenoic acid, hexacosenoic acid, hexacosienoic acid, octacosenoic acid, tracoconthenic acid, etc. Unsaturated carboxylic acids.

Alternatively, the unsaturated carboxylic acid
Ter, acid amide, anhydride, or allyl alcohol,
Crotyl alcohol, methyl vinyl carbinol, ant
Lucarbinol, methylpropenyl carbinol, 4
-Penten-1-ol, 10-undecene-1-o
, Propargyl alcohol, 1,4-pentadiene-
3-ol, 1,4-hexadien-3-ol, 3.
5-hexadiene-2-ol, 2,4-hexadiene
-1-ol, general formula C_nH_2n-5OH, C_nH _2n-7O
H, C_nH_2n-9OH (where n is a positive integer)
Alcohol, 3-butene-1.2-diol, 2.5-
Dimethyl-3-hexene-2,5-diol, 1,5-
Hexadiene-3,4-diol, 2,6-octadie
Unsaturated alcohols such as
Means that the OH group of such an unsaturated alcohol is -NH_Two Base
Unsaturated amine or glycidyl (meth
T) Acrylates, allyl glycidyl ethers, etc.
I can do it.

In addition, low polymerization (for example, those having an average molecular weight of about 500 to 10,000) or high molecular weight substances (for example, those having an average molecular weight of 10 to 10) such as butadiene and isoprene.
000 or more) to which maleic anhydride or phenols have been added, or an amino group, a carboxylic acid group, a hydroxyl group, an epoxy group, or the like introduced, or allyl isocyanate.

The definition of a compound having both an unsaturated group and a polar group in the same molecule in the present invention includes a compound containing two or more unsaturated groups and two or more polar groups (same or different). Needless to say, it is also possible to use two or more specific compounds.

Details of these compounds are described in JP-A-56-2
No. 6913 and JP-A-56-49753.

Of these, maleic anhydride, maleic acid, fumaric acid, itaconic anhydride, itaconic acid and glycidyl (meth) acrylate are preferably used, and more preferably maleic anhydride and fumaric acid are used.

The compatibilizer of the K group used in the present invention is usually prepared by oxidizing a polyolefin wax in the air or in a suspension, and a polyethylene wax or the like is preferable.

The L group compatibilizer used in the present invention includes (i) at least one silicon atom bonded to a carbon atom via an oxygen bridge, and (i)
i) a silane compound having at least both an ethylenic carbon-carbon double bond or a carbon-carbon triple bond and / or a functional group selected from an amino group and a mercapto group, wherein the functional group is not bonded to a silicon atom And specifically, gamma-aminopropyltriethoxysilane, 2
-(3-cyclohexyl) ethyltrimethoxysilane and the like.

The M group compatibilizer used in the present invention
Is an aliphatic polycarboxylic acid or acid ester
Or an acid amide represented by the general formula (R₁ O)_mR (COOR
_Two ) _n(CONR_Three R_Four )_l[Where R: linear or
A branched saturated aliphatic hydrocarbon containing 2 to 20
, Preferably having 2 to 10 carbon atoms, R
₁ : Hydrogen, an alkyl group, an aryl group, an acyl group, or
Particularly preferably, a carbonyldioxy group is hydrogen, R_Two :water
An alkyl, alkyl, or aryl group having 1 to 20 carbon atoms;
Preferably 1 to 10, R_Three And R_Four : Hydrogen, alkyl
Group or aryl group having 1 to 10 carbon atoms, preferably 1
-6, more preferably 1-4, m = 1, (n + 1):
An integer of 2 or more, preferably 2 or 3, n: an integer of 0 or more
Number, l: an integer of 0 or more, (R₁ O) is the α of the carbonyl group
At least two carbonyl groups located at position β or β
Between there are 2 to 6 carbons. ]
Saturated aliphatic polycarboxylic acids and their derivatives
It is a compound.

Specific examples include ester compounds, amide compounds, anhydrides, hydrates, and salts of saturated aliphatic polycarboxylic acids. As a saturated aliphatic polycarboxylic acid,
There are citric acid, malic acid, agaricic acid and the like. Details of these compounds are disclosed in JP-T-61-502195.

The N group compatibilizer used in the present invention is represented by the general formula (I) -Z- (II) wherein (I) is at least the formula: (X-CO)-(wherein X represents F, Cl, B, I, OH, OR, or -O-
R is H, an alkyl group or an aryl group), and (II) is at least a carboxylic acid, an acid anhydride group, an acid amide group, an imide group, a carboxylic ester group, an amino group or a hydroxyl group. (I) and (I)
The group of I) is covalently linked via a bond Z which is a divalent hydrocarbon. ] It is a compound represented by these.

Specific examples include chloroformyl succinic anhydride, chloroethanoyl succinic anhydride, trimellitic anhydride chloride, trimellitic anhydride acetic anhydride, terephthalic acid chloride and the like.

Specific examples of the compatibilizer of the O group used in the present invention include, for example, a styrene-maleic anhydride copolymer resin.

The compatibilizer (D) in the present invention is not limited to the compounds I to Q exemplified above, and is used for the purpose of improving the compatibility between (A) the polyphenylene ether and (B) the polyamide. Any compound may be used, and a single or a plurality of compatibilizers may be used simultaneously.

The amount of the compatibilizer (D) is 0.01 to 30 parts by weight based on 100 parts by weight of the total of (A) polyphenylene ether and (B) polyamide.

If the amount exceeds 30 parts by weight, the heat resistance is lowered and the strength is significantly lowered due to decomposition or the like, which is not preferable. The preferred amount is 0.05 to 25 parts by weight. When the compatibilizing agent is blended, a radical initiator may be used in combination.

The resin composition of the present invention can contain a wide range of substances other than those described above, if necessary. As such a substance, a lubricant, a weather resistance improver, a heat stability improver, a flame retardant, a colorant, a conductive filler such as carbon black or stainless steel fiber, a reinforcing organic or inorganic filler, and the like can be blended. .

Specific examples of the stabilizer include sterically hindered phenols, organic phosphites, oxalic diazides, sterically hindered amines, and the like, and specific examples of the lubricant include polyethylene wax and paraffin. Can be. The mixing ratio of the other substances can be arbitrarily selected according to the purpose.

The method for producing the thermoplastic resin composition of the present invention is based on melt kneading. As a method of melt-kneading, a uniform mixture is obtained by mixing the above components with a resin such as a Henschel mixer, a super mixer, a ribbon blender, a V blender, or a mixing means used for mixing a resin and a liquid or solid additive. After that, a method of kneading using a kneading means such as a single-screw or twin-screw extruder can be exemplified. Among them, the use of a twin-screw extruder is preferred.

Here, in order to obtain the effect of the present method using an extruder having three feed ports, L / D is at least 30 or more, more preferably 35 or more.

During kneading, the temperature is 120 to 400.
° C, preferably in the range of 200 to 350 ° C.

The method for producing the thermoplastic resin composition of the present invention comprises the steps of:
In addition, the dispersion particle size of the rubber is reduced and the oxidation deterioration of PPE, rubber, and the like is reduced, and a material having high physical properties is obtained.

In general, at the temperature at which both the polyphenylene ether and the polyamide are melted, the polyamide has a lower viscosity when each resin has a commonly used molecular weight. Therefore, when the PPE and the polyamide have the same volume, the polyamide phase forms a continuous phase, and the PPE forms a dispersed phase.

The difficulty in the kneading method when preparing an alloy of PPE and polyamide is that the viscosity of polyamide is low,
During kneading, the shear stress is not sufficiently applied to the system, and the dispersed particle size of PPE and rubber becomes large, so that desired physical properties may not be obtained. In particular, this problem is remarkable when the polyamide used has a low molecular weight or when the amount of polyamide in the whole composition is large.

As a measure for reducing the dispersion particle size of the PPE and the rubber component, the present inventors knead the PPE and a part of the polyamide with a high viscosity, and then add the remaining polyamide. The study was performed using an extruder having three or more feed ports.
As a result, the present inventors have found that the intermediate composition composed of PPE from the first supply port and a part of the polyamide from the second supply port has a melt viscosity higher than that of the system to which the total amount of the final composition is added. High enough that in the intermediate composition P
It has been found that the dispersed particle size of PE and the like becomes smaller, a large amount of a polyamide-PPE graft is formed at the interface, and a morphology of fine particle size can be achieved in the final composition containing the remaining polyamide. Was.

In the method of preparing the resin composition using an extruder having three or more supply ports, a two-feed method in which PPE is supplied from a first supply port and the entire amount of polyamide is supplied from a second supply port. It was confirmed that a resin composition having better Izod impact strength, tensile elongation, and the like could be obtained. This is because the conventional two-feed manufacturing method does not sufficiently reduce the dispersed particle size of PPE and rubber. Furthermore, a method of preparing the resin composition using an extruder having three or more supply ports is to pelletize the intermediate composition, dry the pellets, and knead the remaining polyamide with the extruder again. It has been confirmed that a resin composition having excellent Izod impact strength, tensile elongation, and the like can be produced and is economically advantageous as compared with the two-stage method. Compared with the two-stage method of pelletizing the intermediate composition, the method of granulating at once using three feeders is superior in the physical properties of the resin because the latter is more effective for PPE and rubber by air. It is presumed that this is due to the fact that there is little oxidative degradation.

In the present method, the polyamides (B-1) and (B-2) fed from each feed port may be different types, the same type, or a mixture of different types of polyamides. There may be. PPE in advance
There is no significant difference in the effect of increasing the viscosity during melt kneading of some polyamides. Further, in view of the above effects, the polyamide (B-1) introduced from the second supply port
Is not limited to PA66.

When the same kind of polyamides having different melt viscosities are used, the PPE (A) functionalized with the compatibilizer (D) and a part of the polyamide (B As long as the polyamide in the intermediate composition of -1) has an amount sufficient to form a continuous phase, it is better to first charge the polyamide (B-1) having a high melt viscosity,
It is effective in improving physical properties. Here, the third
Unless the solution viscosity of the remaining polyamide (B-2) charged from the supply port is lower than a specified value, no improvement in physical properties is not observed. When the amount of the high-molecular-weight polyamide (B-1) added exceeds 50% by weight of the polyamide, the effect of the method of dividing and feeding the polyamide easily using these three feed ports can be confirmed.

Even more surprisingly, when feeding the same polyamides (B-1) and (B-2) having the same kind and the same molecular weight, the conventional polyamide can be divided and fed by the conventional method. It was found that the physical properties were improved as compared with the method using two feeds which were charged at once.

With respect to the amount of polyamide in the total composition,
When the amount of the polyamide (B) is 51% by weight or more and the amount of the polyamide (B) is 58% by weight or more, the method of dividing and feeding the polyamide using these three feed ports is preferred. However, a greater effect of improving the physical properties is seen than in the conventional method of batch-injecting polyamide.

This is because the larger the amount (B) of the polyamide in the entire composition, the more the conventional method of batch-feeding the polyamide tends to increase the dispersion particle size of PPE or the like. Can be In the intermediate product of the PPE (A) functionalized with the compatibilizer (D) and some of the polyamide (B-1), the polyamide is in an amount sufficient to form a continuous phase. Polyamide (B) fed from the second supply port
-1) and polyamide (B-
The ratio of (2) is such that the weight ratio of (B-1) / (B-2) is 99%.
/ 1 to 10/90. Preferably 99/1 to 20 /
80, more preferably 99/1 to 55/45.
More preferably, it is 90/10 to 55/45, and most preferably, it is 80/20 to 55/45.

With respect to the molecular weight of the polyamide, when the total number average molecular weight of both the polyamides (B-1) and (B-2) used is 22,000 or less, the number average molecular weight of both polyamides is also 17500 When the polyamide is divided and charged using the three feed ports at the time of the following, a greater improvement in physical properties is observed as compared with the conventional method of charging the polyamide collectively.

This is presumably because the lower the molecular weight of the polyamide used, the larger the dispersed particle size of PPE, rubber, and the like is likely to increase in the conventional method of batch-feeding polyamide.

The relation between the relative viscosity η _r and the number average molecular weight Mn of polyamide at a concentration of 0.01 (g / ml) in 98% sulfuric acid at 25 ° C. was Mn = 1300 × (η _r −1.05 ), Η _r is 3.0 or less when the molecular weight is 22,000 or less, and η _r is 17500 or less when the molecular weight is 17500 or less.
_r corresponds to 2.6 or less.

The thermoplastic resin composition according to the present invention is molded by injection molding, extrusion molding or other various molding methods. The molded article obtained from the thermoplastic resin composition of the present invention is suitably used for automobile parts, electric / electronic parts and the like.

Examples of molded articles for automobile parts include bumpers,
Exterior products such as fenders, aprons, food panels, fascias, rocker panels, rocker panel reinforces, floor panels, rear quarter panels, door panels, door supports, rooftops, trunk lids, fuel lids, etc., instrument panels, console boxes, glove boxes, Interior parts such as shift knobs, pillar garnishes, door trims, handles, armrests, wind louvers, headrests, seats, etc., parts in the engine room such as distributor caps, air cleaners, battery cases, radiator shrouds, cooling fans, heater cases, mirror bodies,
Examples include a wheel cover, a trunk mat, and a gas tank.

Further, as a component for a motorcycle, for example, it is used for a cowling material, a muffler cover, and a leg shield. Further, as electric and electronic parts, they are used for housings, chassis, connectors, relay blocks, printed boards, pulleys, and other parts requiring strength and heat resistance.

[0070]

The present invention will be described in more detail with reference to the following examples. However, the present invention is not limited by the following examples.

The following raw materials were used to obtain the compositions of Examples and Comparative Examples. (A) PPE-1: poly (2,6-dimethyl-1,4-phenylene ether) having an intrinsic viscosity of 0.46 dl / g measured in chloroform at 30 ° C. (B) PA6: number-average molecular weight of 12,000 Polyamide 6 (Unitika A1020BRL) Polyamide 6 having a number average molecular weight of 17500 (A1030BRL manufactured by Unitika) Polyamide 6 having a number average molecular weight of 215000 (A1030BRF manufactured by Unitika) Polyamide 6 having a number average molecular weight of 255000 (A1030BRT manufactured by Unitika) Polyamide 6 having a number average molecular weight of 17000 (XPN1546 manufactured by Allied Signal Corporation) Polyamide 6 having a number average molecular weight of 16000 Polyamide 6 PA6 having a number average molecular weight of 22000 PA6, 6: Polya having a number average molecular weight of 17000 Mid 6,6 Polyamide 6,6 having a number average molecular weight of 21000 (C) SBS: Styrene-butadiene-styrene block copolymer Califrex TR1102 SEBS manufactured by Shell Chemical Co., Ltd. Hydrogenated styrene-butadiene manufactured by Shell Chemical Co. Styrene block copolymer Clayton G1651 St-g-EPDM: styrene graft-ethylene-propylene-non-conjugated diene rubber m-EPR: maleic anhydride-modified ethylene-propylene rubber (D) fumaric acid citric acid maleic anhydride

The extruder used to carry out the present method is a twin screw extruder (TEM-50) manufactured by Toshiba Machine Co., Ltd. The screw length to diameter ratio L / D is 40, and the cylinder consists of 11 blocks. The cylinder has three supply ports,
The first feed section is provided on the first cylinder block, the second feed section is provided on the fifth cylinder block, and the third feed section is provided on the eighth cylinder block. Each feed port is provided with a weight feeder.

The obtained composition was subjected to injection molding at a cylinder temperature of 280 ° C. and a mold temperature of 80 ° C. to prepare a test piece, and the physical properties were evaluated.

The characteristics described in the examples and comparative examples were measured by the following methods. (1) Bending test: ASTM D790 (2) Tensile test: ASTM D638 (3) Izod impact test: ASTM D256 The test piece was 3.2 mm thick and notched. (4) Deflection temperature under load (HDT): ASTM D64
8 The measurement was performed with a 4.6 kg load. (5) Drop weight impact test: JIS K7211 (FWI) A 80 mm × 80 mm × 3 mm thick square plate was prepared with n = 20, and a drop weight test was performed at a test temperature of −20 ° C. by an up-down method. The ductile fracture ratio indicates the number of ductile fractured specimens among the fractured specimens, excluding the unbroken specimens.

Example 1 42 parts by weight of PPE-1 (A) and maleic acid (D)
0.42 parts by weight were previously mixed with a Henschel mixer, and the mixture was mixed with a No. 2 screw extruder (TEM-50) manufactured by Toshiba Machine Co., Ltd. having three feed ports and having a cylinder temperature of 280 ° C. and a screw rotation speed of 300 rpm. It was charged and kneaded from one supply port. Further, from the second supply port, 14 parts by weight of PA6 (B-1) having a number average molecular weight of 22000 and SBS (Califlex TR1102) (C-2) 10
Parts by weight of the mixture are charged and kneaded, and further, 34 parts by weight of PA6 (B-2) having a number average molecular weight of 16000 are charged and kneaded from the third supply port to obtain a pelletized thermoplastic resin composition. Was. The obtained composition was subjected to injection molding to prepare test pieces, and the physical properties were evaluated.

Comparative Example 1 A mixture of 100 parts by weight of PPE-1 and 1 part by weight of maleic anhydride was fed to a hopper of an extruder, melt-kneaded at a cylinder temperature of 320 ° C., and mixed with maleic anhydride-modified polyphenylene ether (f-PPE- 1) was obtained. Next, after mixing 42 parts by weight of modified polyphenylene ether (f-PPE-1), 10 parts by weight of SBS (Califlex TR1102), and 14 parts by weight of PA having a number average molecular weight of 22,000, a hopper of a 50 mmφ biaxial kneader was mixed. −, Cylinder temperature 280 ° C., screw rotation speed 30
The mixture was melt-kneaded at 0 rpm to obtain a masterbatch pellet. After vacuum drying the pellets at 100 ° C. for 24 hours, 66 parts by weight of the masterbatch pellets and 34 parts by weight of PA6 having a number average molecular weight of 16,000 were mixed, and then supplied to a hopper of a 50 mm φ biaxial kneader to obtain a cylinder temperature of 280 ° C. , Screw rotation speed 300rpm
Was melt-kneaded under the following conditions to obtain a pelletized thermoplastic composition. The obtained composition was subjected to injection molding to prepare test pieces and to evaluate physical properties.

Example 2 49 parts by weight of PPE-1 and 0.7 parts by weight of citric acid were previously mixed with a Henschel mixer. The mixture was heated at a cylinder temperature of 280 ° C. and a screw rotation speed of 300 rpm.
Made by Toshiba Machine with three feed ports set to 2
It is charged and kneaded from a first supply port of a screw extruder (TEM-50), and a number average molecular weight is 21,000 from a second supply port.
A mixture of 10 parts by weight of PA66 and 10 parts by weight of SBS (Califlex TR1102) is charged and kneaded, and a PA having a number average molecular weight of 25500 is supplied from the third supply port.
630 parts by weight were charged and kneaded to obtain a pelletized thermoplastic resin composition. The obtained composition was subjected to injection molding to prepare test pieces, and the physical properties were evaluated.

Comparative Example 2 49 parts by weight of PPE-1, 0.7 parts by weight of citric acid, 10 parts by weight of PA66 having a number average molecular weight of 21,000, and S
A mixture of 10 parts by weight of BS (Califlex TR1102) was previously mixed with a Henschel mixer. The mixture was heated at a cylinder temperature of 280 ° C. and a screw rotation speed of 300.
rpm, a twin screw extruder manufactured by Toshiba Machine Co., Ltd. (TEM-5
0) from the first supply port, kneading, and further, from the second supply port, 31 parts by weight of PA63 having a number average molecular weight of 25,500 were charged and kneaded, and the pelletized thermoplastic resin composition was formed by the two-feed method. I got something. The obtained composition was subjected to injection molding to prepare test pieces and to evaluate physical properties.

Example 3 PPE-1 (A) 32 parts by weight, fumaric acid (D) 0.45
Parts by weight and 8 parts by weight of St-g-EPDM (C-1) were previously mixed with a Henschel mixer. The mixture was charged and kneaded from a first supply port of a twin screw extruder (TEM-50) manufactured by Toshiba Machine Co., Ltd. having three feed ports and a cylinder temperature of 280 ° C. and a screw rotation speed of 300 rpm.
Further, from the second supply port, P having a number average molecular weight of 12,000
30 parts by weight of A6 (B-1) are charged and kneaded, and the third
PA66 having a number average molecular weight of 17000 (B
-2) 30 parts by weight were charged and kneaded to obtain a pelletized thermoplastic resin composition. The obtained composition was subjected to injection molding to prepare test pieces, and the physical properties were evaluated.

Example 4 30 parts by weight of PA66 having a number average molecular weight of 17000 and polyamide (B-2) to be charged from the third supply port were 12,000 and 12,000, respectively. Example 3 except that the amount of PA6 was 30 parts by weight.
Was performed in the same manner as described above.

Comparative Example 3 PPE-1 (A) 32 parts by weight, fumaric acid (D) 0.45
Parts by weight and 8 parts by weight of St-g-EPDM (C-1) were previously mixed with a Henschel mixer. The mixture was charged and kneaded from a first supply port of a twin screw extruder (TEM-50) manufactured by Toshiba Machine Co., Ltd. having three feed ports and a cylinder temperature of 280 ° C. and a screw rotation speed of 300 rpm.
Further, from the second supply port, P having a number average molecular weight of 12,000
A6 30 parts by weight and P having a number average molecular weight of 17000
A66 A pelletized thermoplastic resin composition was obtained by a two-feed method in which 30 parts by weight of the mixture (B-1) was charged and kneaded. The obtained composition was subjected to injection molding to prepare test pieces, and the physical properties were evaluated.

Comparative Example 4 A mixture of 100 parts by weight of PPE-1 and 1.4 parts by weight of fumaric acid was fed to a hopper of an extruder, melt-kneaded at a cylinder temperature of 320 ° C., and subjected to fumaric acid-modified polyphenylene ether (f-PPE- 2) was obtained. 32 parts by weight of the modified polyphenylene ether (f-PPE-2), St-g
-8 parts by weight of EPDM (C-1) and a number average molecular weight of 17
000 PA66 (30 parts by weight) was previously mixed with a Henschel mixer, and then supplied to a hopper of a 50 mmφ biaxial kneader, where the cylinder temperature was 280 ° C. and the screw rotation number was 3
The mixture was melt-kneaded at a condition of 00 rpm to obtain a master batch pellet. After vacuum drying the pellets at 100 ° C. for 24 hours, 70 parts by weight of the master batch pellets and 30 parts by weight of PA6 having a number average molecular weight of 12000 were mixed, and then supplied to a hopper of a 50 mm φ biaxial kneader.
Cylinder temperature 280 ° C, screw rotation speed 300rpm
The mixture was melted and kneaded under the conditions of m to obtain a pelletized thermoplastic composition. The obtained composition was subjected to injection molding to prepare test pieces, and the physical properties were evaluated.

Example 5 33 parts by weight of PPE-1 (A), maleic anhydride (D)
0.40 parts by weight, SEBS (Clayton G1651)
15 parts by weight were previously mixed with a Henschel mixer. The mixture was charged and kneaded from a first supply port of a twin screw extruder (TEM-50) manufactured by Toshiba Machine Co., Ltd., having three feed ports and a cylinder temperature of 280 ° C. and a screw rotation speed of 300 rpm, and further, a second supply. 30 parts by weight of PA6 (B-1) having a number average molecular weight of 21,500 were charged and kneaded from the mouth, and further, the number average molecular weight was 1200 from the third supply port.
Then, 22 parts by weight of PA6 (B-2) was added and kneaded to obtain a pelletized thermoplastic resin composition. The obtained composition was subjected to injection molding to prepare test pieces, and the physical properties were evaluated.

Comparative Example 5 33 parts by weight of PPE-1 (A), maleic anhydride (D)
0.40 parts by weight, SEBS (Clayton G1651)
15 parts by weight were previously mixed with a Henschel mixer. The mixture was charged and kneaded from a first supply port of a twin screw extruder (TEM-50) manufactured by Toshiba Machine Co., Ltd., having three feed ports and a cylinder temperature of 280 ° C. and a screw rotation speed of 300 rpm, and further, a second supply. From the mouth, a mixture of 30 parts by weight of PA6 having a number average molecular weight of 21500 and 22 parts by weight of PA6 having a number average molecular weight of 12000 (B-1)
The pelletized thermoplastic resin composition was obtained by a two-feed method of charging and kneading. The obtained composition was subjected to injection molding to prepare test pieces, and the physical properties were evaluated.

Example 6 15 parts by weight of PPE-1 (A), maleic anhydride (D)
0.1 parts by weight, SEBS (Clayton G1651) 1
0 parts by weight were previously mixed with a Henschel mixer. The mixture was heated at a cylinder temperature of 280 ° C. and a screw rotation speed of 3
It was charged and kneaded from a first supply port of a twin screw extruder (TEM-50) manufactured by Toshiba Machine Co., Ltd. having three feed ports set at 00 rpm, and PA6 (B) having a number average molecular weight of 175000 was supplied from a second supply port. -1) 25 parts by weight are charged and kneaded, and the number average molecular weight is 1700 from the third supply port.
No. PA6 (B-2) of 50 parts by weight was added and kneaded to obtain a pelletized thermoplastic resin composition. The obtained composition was subjected to injection molding to prepare test pieces and to evaluate physical properties.

Comparative Example 6 15 parts by weight of PPE-1 (A), maleic anhydride (D)
0.1 parts by weight, SEBS (Clayton G1651) 1
0 parts by weight were previously mixed with a Henschel mixer. The mixture was heated at a cylinder temperature of 280 ° C. and a screw rotation speed of 3
The mixture was charged and kneaded from a first supply port of a twin screw extruder (TEM-50) manufactured by Toshiba Machine Co., Ltd. having three feed ports set at 00 rpm, and PA6 (B) having a number average molecular weight of 17,500 was supplied from a second supply port. -1) Master batch pellets were obtained by a two-feed method in which 25 parts by weight were charged and kneaded. After vacuum drying the pellets at 100 ° C. for 24 hours, 50 parts by weight of the master batch pellets and 50 parts by weight of PA6 having a number average molecular weight of 17000 were mixed, and then supplied to a hopper of a 50 mm φ biaxial kneader to obtain a cylinder temperature of 280 ° C. The mixture was melt-kneaded at a screw rotation speed of 300 rpm to obtain a pelletized thermoplastic composition. The obtained composition was subjected to injection molding to prepare test pieces and to evaluate physical properties.

Example 7 35 parts by weight of PPE-1 (A), maleic anhydride (D)
0.42 parts by weight and 15 parts by weight of St-g-EPDM (C-1) were previously mixed with a Henschel mixer. The mixture was heated at a cylinder temperature of 280 ° C. and a screw rotation speed of 300.
The mixture was charged and kneaded from a first supply port of a twin-screw extruder (TEM-50) manufactured by Toshiba Machine Co., Ltd. having three feed ports set at rpm, and a number average molecular weight was 12 from a second supply port.
000 of PA6 (B-1) 33 parts by weight and m-EPR
(C-2) 2 parts by weight of the mixture were charged and kneaded, and the same number average molecular weight as that of (B-1) was 12 through the third supply port.
000 PA6 (B-2) 15 parts by weight, kneading,
A pelletized thermoplastic resin composition was obtained. The obtained composition was subjected to injection molding to prepare test pieces and to evaluate physical properties.

Comparative Example 7 35 parts by weight of PPE-1 (A), maleic anhydride (D)
0.42 parts by weight and 15 parts by weight of St-g-EPDM (C-1) were previously mixed with a Henschel mixer. The mixture was heated at a cylinder temperature of 280 ° C. and a screw rotation speed of 300.
The mixture was charged and kneaded from a first supply port of a twin-screw extruder (TEM-50) manufactured by Toshiba Machine Co., Ltd. having three feed ports set at rpm, and a number average molecular weight was 12 from a second supply port.
000 PA6 (B-1) 48 parts by weight and m-EPR
A pelletized thermoplastic resin composition was obtained by a two-feed method of charging and kneading 2 parts by weight (C-2) of the mixture. The obtained composition was subjected to injection molding to prepare test pieces and to evaluate physical properties.

Example 8 42 parts by weight of PPE-1 (A), maleic anhydride (D)
0.5 parts by weight, SEBS (Clayton G1651)
10 parts by weight were previously mixed with a Henschel mixer. The mixture was charged and kneaded from a first supply port of a twin screw extruder (TEM-50) manufactured by Toshiba Machine Co., Ltd., having three feed ports and a cylinder temperature of 280 ° C. and a screw rotation speed of 300 rpm, and further, a second supply. 38 parts by weight of PA6 (B-1) having a number average molecular weight of 12000 was charged and kneaded from the mouth, and further, the same PA6 (B-2) having a number average molecular weight of 12000 and the same as (B-1) was supplied from the third supply port. 10) parts by weight were charged and kneaded to obtain a pelletized thermoplastic resin composition. The obtained composition was subjected to injection molding to prepare test pieces, and the physical properties were evaluated.

Comparative Example 8 42 parts by weight of PPE-1 (A), maleic anhydride (D)
0.5 parts by weight, SEBS (Clayton G1651)
(C-1) 10 parts by weight were previously mixed with a Henschel mixer. The mixture was charged and kneaded from a first supply port of a twin-screw extruder (TEM-50) manufactured by Toshiba Machine Co., Ltd. having three feed ports and a cylinder temperature of 280 ° C. and a screw rotation speed of 300 rpm, followed by a second supply. A pelletized thermoplastic resin composition was obtained by a two-feed method in which 48 parts by weight of PA6 (B-1) having a number average molecular weight of 12000 was charged and kneaded from the mouth. The obtained composition was subjected to injection molding to prepare test pieces, and the physical properties were evaluated.

[0091]

[Table 1]

[0092]

[Table 2]

[0093]

[Table 3]

[0094]

[Table 4]

[0095]

[Table 5]

[0096]

As shown in the present invention, when an alloy of polyphenylene ether and polyamide is prepared, an extruder having three or more supply ports is used, and polyphenylene ether and a compatibilizer are supplied from the first supply port. The kneading and kneading, the kneading and kneading of some polyamides from the second supply, and then the kneading and kneading of the remaining polyamides from the third or more supply ports, use the manufacturing method of high Izod impact strength and high tensile elongation. Thus, a polyphenylene ether / polyamide resin composition having the following properties is obtained.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-41321 (JP, A) JP-A-62-270654 (JP, A) JP-A-2-175106 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) C08L 71/12 C08J 3/20-3/22 C08L 21/00-21/02 C08L 77/00-77/12

Claims (9)

(57) [Claims] (A) 5 to 90% by weight of polyphenylene ether (B) 95 to 10% by weight in total of B-1 polyamide-1 B-2 polyamide-2 (where (B-1) and (B- 2) Each is 1% by weight or more, and (B-1) and (B-2) may be the same type or different types.) (C) C-1 Rubber-1C -2 rubber-2 C-3 rubber-3 (where the component (C) is 0 to 100 parts by weight with respect to 100 parts by weight of the component (A) + (B), and (C-1) (C-2) and (C-3) may be of the same type or of different types.) (D) Resin comprising 0.01 to 30 parts by weight of a compatibilizer between polyamide and polyphenylene ether In producing the composition, (i) pressing was performed using an extruder having three or more supply ports. The compatibilizer of the component (D), the polyphenylene ether of the component (A), and the rubber-1 of the component (C-1) are fed from the first supply port of the output machine, and melt-kneaded to perform functionalized polyphenylene. (Ii) Polyamide-1 of the component (B-1) and rubber-2 of the component (C-2) are fed from the second supply port, and the intermediate composition obtained in (i) is mixed with the intermediate composition. The mixture was melt-kneaded, and (iii) the polyamide-2 of the component (B-2) and the rubber-3 of the component (C-3) were fed from the third supply port, and the intermediate composition obtained in (ii) was fed. A method for producing a thermoplastic resin composition, comprising melt-kneading with a product. 2. The method according to claim 1, wherein (B-2) is a different kind of polyamide from (B-1). 3. The method according to claim 1, wherein (B-1) and (B-2) are polyamides of the same kind and having different molecular weights. 4. The weight ratio of (B-1) / (B-2) is 99 /
The production method according to claim 1, wherein the ratio is 1 to 20/80. 5. The method according to claim 1, wherein the weight ratio of (B-1) / (B-2) is 80 /
The method according to claim 1, wherein the ratio is 20 to 55/45. 6. The molecular weight of (B-1) is higher than the molecular weight of (B-2), and the weight ratio of (B-1) / (B-2) is 99.
4. The method according to claim 3, wherein the ratio is from 1/1 to 55/45. 7. The method according to claim 1, wherein (B-1) and (B-2) are polyamides of the same kind and the same molecular weight. 8. The amount of the polyamide in the total composition is 51% by weight.
The manufacturing method according to any one of claims 1 to 7, which is as described above. 9. The number average molecular weight of all polyamides is 22,000.
The manufacturing method according to claim 1, wherein: