JPH05306355A - Thermoplastic resin composition - Google Patents

Abstract

PURPOSE:To provide a resin composition comprising an acrylamide N-substituted with a glycidyloxy group-containing aromatic group, etc., an epoxy-modified acrylonitrile-styrene-copolymer, a polyamide, etc., good in the compatibility and useful for automotive parts, etc. CONSTITUTION:The thermoplastic resin composition improved in the compatibility comprises (A) 5-95 pts.wt. of an olefinic resin modified with a glycidyl compound of the formula (R is H, 1-6C alkyl ; Ar is 6-20C aromatic hydrocarbon group which has a glycidyloxy substituent and further which may have another substituent: (n) is an integer of 1-4), an olefinic resin modified with an unsaturated carboxylic acid or its anhydride, or its mixture with the olefinic resin, (B) 95-5 pts.wt. of an epoxy-modified acrylonitrile-styrene random copolymer or its mixture with acrylonitrile-styrene random copolymer, and (C) a polyamide and/or a polyester in an amount of 0.5-100 pts.wt. per 100 pts.wt. of the total amount of the components A and B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin composition containing an olefin resin and an acrylonitrile-styrene random copolymer which can be used as a material for various molded articles such as automobile parts, furniture and electric products.

[0002]

BACKGROUND OF THE INVENTION Olefinic resins are excellent in mechanical strength, moldability, chemical resistance and the like, and are widely used in various industrial fields such as interior / exterior parts of automobiles, home electric appliance parts and housings. However, since polyolefin is a non-polar molecule, it has problems in secondary processability, especially in solid-phase adhesiveness and paintability. As a method of improving such an olefin resin, blending polystyrene having good adhesiveness with the olefin resin is performed.

In particular, since styrene-acrylonitrile random copolymer is excellent in chemical resistance, strength and heat resistance among polystyrene resins, a blend of the styrene-acrylonitrile random copolymer and olefin resin can exhibit various excellent properties. Is expected.

However, since the compatibility between the olefin resin and the polystyrene resin is not good, the blended product has a problem that the physical properties, particularly the surface peeling resistance, are significantly deteriorated.

Therefore, various compositions have been proposed in which a compatibilizing agent is added to the composition of a polypropylene resin and a polystyrene resin in order to improve the compatibility thereof (JP-A-64- 87945, Japanese Patent Laid-Open No. 1-174550). Each of the above-mentioned compositions contains a styrene-non-conjugated diene block copolymer or the like as a compatibilizing agent for polypropylene resin and polystyrene resin.

[0006]

However, although the compatibilizer has some effect on the compatibilization of the polypropylene-based resin and the polystyrene-based resin, the compatibilizer of the polypropylene-based resin and the styrene-acrylonitrile random copolymer There is a problem that there is almost no effect on compatibilization.

As described above, a composition in which an olefin resin and a styrene-acrylonitrile random copolymer are favorably compatibilized cannot be obtained.

In view of the above, the present invention satisfactorily compatibilizes an olefin resin and an acrylonitrile-styrene (hereinafter sometimes referred to as AN-St) random copolymer, and is excellent in surface characteristics and various mechanical characteristics. An object of the present invention is to provide a thermoplastic resin composition containing an olefin resin and an AN-St random copolymer as main components.

[0009]

The thermoplastic resin composition of the present invention comprises the following formula (A) (a):

[0010]

[Chemical 2] In the formula, R is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, Ar has at least one glycidyloxy substituent, and an aromatic having 6 to 20 carbon atoms which may have other substituents. A glycidyl compound represented by a group hydrocarbon having n representing an integer of 1 to 4, or (b) an olefin resin modified with an unsaturated carboxylic acid or an anhydride thereof, or an olefin resin and an olefin resin 5-95 Parts by weight, and (B) an epoxy-modified acrylonitrile-styrene random copolymer or 95 to 5 parts by weight of this and an acrylonitrile-styrene random copolymer, and (C) polyamide and / or polyester (A)
0.5 to 10 based on 100 parts by weight of the total of (B) and
It is characterized by containing 0 parts by weight.

In the present invention, a modified and / or unmodified olefin resin is used as the component (A). Here, the olefin resin, ethylene, propylene, butene, homopolymers of α-olefin monomers such as 4-methylpentene-1, copolymers thereof, or copolymers of these with dienes and hydrogenated products thereof, etc., It includes all known olefinic resins. In the case of a copolymer, both a block copolymer and a random copolymer are included. It is preferably a crystalline polymer polymerized with an olefin monomer as a main component, and 40% by weight.
It may be copolymerized with other α-olefins such as ethylene, butene and 4-methylpentene-1 to an extent. The above copolymer may be either a random copolymer or a block copolymer.

Further, the general formula (Formula 3):

[0013]

[Chemical 3] (Wherein R ¹ , R ² , R ³ and R ⁴ are each independently a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and m is an integer of 1 to 20) Olefin random copolymers containing conjugated diene comonomers can also be used.

Next, the modified olefin resin means
(a) a glycidyl compound represented by the above formula (Formula 2) or
(b) An unsaturated carboxylic acid or an anhydride thereof is graft-polymerized with the above olefin resin.

First, the glycidyl compound represented by the above formula (Formula 2) will be described. In the above formula (Formula 2), R
Is preferably a hydrogen atom or CH ₃ , and n is 1 to 4
Is. Ar is preferably a mononuclear aromatic hydrocarbon group having 6 to 10 carbon atoms (alkyl-substituted or not) having 1 or 2 glycidyloxy substituents or a bisphenol A residue. Other optional substituents on the aromatic ring include alkyl groups such as methyl and ethyl groups, and halogen atoms.

As a particularly preferred glycidyl compound, a compound of the following formula (Formula 4) can be mentioned.

[0017]

[Chemical 4] (In the formula, R is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, preferably a hydrogen atom or a methyl group.) Such a glycidyl compound is described in, for example, JP-A-60-1305.
It can be produced by the method shown in No. 80.

The reaction between the glycidyl compound of the above chemical formula 2 and the olefin resin can be carried out by either a solution method or a melt kneading method, preferably a melt kneading method. In the case of the melt-kneading method, a glycidyl compound and an olefin-based resin, and a uniaxial or biaxial extruder for a catalyst if necessary,
Put in a Banbury mixer, batch kneader, etc.,
The mixture is heated to a temperature of 200 to 300 ° C, preferably 220 to 260 ° C and kneaded for 0.1 to 20 minutes while melting. In the case of the solution method, the above-mentioned starting materials are dissolved in an organic solvent such as xylene and stirred at a temperature of 90 to 200 ° C for 0.1 to 100 hours. In any case, it is possible to use a normal radical polymerization catalyst as a catalyst, for example, benzoyl peroxide, lauroyl peroxide, ditertiary butyl peroxide, acetyl peroxide, tert-butyl peroxybenzoic acid, dicumyl peroxide, Peroxybenzoic acid,
Peroxides such as peroxyacetic acid, tertiary butyl peroxypivalate, and 2,5-dimethyl-2,5-ditertiary butyl peroxyhexyne, and diazo compounds such as azobisisobutyronitrile are preferable. The amount of the catalyst added is about 0.1 to 10 parts by weight with respect to 100 parts by weight of the glycidyl compound. A phenolic antioxidant can be added during the above reaction. However, when the radical polymerization catalyst is not added, it is preferable not to add it.

The mixing ratio of the glycidyl compound to 100 parts by weight of the olefin resin is 0.01 to 30 parts by weight, preferably 0.1 to 10 parts by weight. When the blending amount of the glycidyl compound is less than 0.01 part by weight, a sufficient amount of graft reaction cannot be achieved, while when it is more than 30 parts by weight, the molecular weight of the modified olefin resin obtained decreases.

In this reaction, the glycidyl compound is graft-polymerized with the olefin resin. Generally, 70-95%, especially 80-90% of the glycidyl compound used is actually grafted. It is generally preferred that 0.1 to 10 parts by weight of the glycidyl compound be grafted on 100 parts by weight of the olefin resin.

Next, the unsaturated carboxylic acid or its anhydride will be described. Specific examples thereof include acrylic acid, monocarboxylic acid such as methacrylic acid, maleic acid, fumaric acid, dicarboxylic acid such as itaconic acid, maleic anhydride, fumaric anhydride, itaconic anhydride, endo-bicyclo [2,2,
Examples thereof include dicarboxylic acid anhydrides such as 1] -5-heptene-2,3-dicarboxylic acid anhydride (hymic anhydride). The reaction of such an unsaturated carboxylic acid or its anhydride with an olefin resin can be carried out by a solution method or a melt-kneading method in the same manner as the above-mentioned reaction of a glycidyl compound with an olefin resin. However, the temperature is 180 to 250 ° C. in the case of the melt kneading method and 80 in the case of the solution method.
~ 140 ° C. The amount of the catalyst is about 0.1 to 100 parts by weight with respect to 100 parts by weight of carboxylic acid anhydride or its anhydride. The graft ratio of the unsaturated carboxylic acid or its anhydride to the olefin resin is preferably 0.1 to 8% by weight, more preferably 0.3 to 5% by weight.
Is. The melt flow rate (MFR) of an olefin resin modified with such an unsaturated carboxylic acid or an anhydride thereof (measured at 230 ° C. and a load of 2.16 kg, hereinafter also measured under the same conditions as MFR) was 0. 1-300g
/ 10 minutes is preferable.

In the present invention, the component (A) is the above-mentioned modified olefin resin or the unmodified olefin resin, and the unmodified olefin resin is used in an amount of up to 99% by weight of the whole component (A). Can be included.

Next, the acrylonitrile-styrene (AN-St) random copolymer used in the present invention is a random copolymer of repeating units derived from acrylonitrile and repeating units derived from styrene. is there. The content of acrylonitrile is usually 2 to 50% by weight based on 100% by weight of the entire AN-St copolymer.
And preferably 20 to 30% by weight. In addition, a polyolefin rubber such as polybutadiene rubber is used
Acrylonitrile-butadiene-styrene resin (ABS resin) graft-polymerized at about 40% by weight or less, acrylonitrile-EP rubber-styrene resin (AES resin) at about 40% by weight graft-polymerized ethylene-propylene copolymer rubber (EP rubber), etc. Is also included in the acrylonitrile-styrene copolymer in the component (B).

Such an AN-St random copolymer has a melt flow rate (MFR) (measured at 230 ° C. and a load of 2.16 Kg, and also MFR measured under the same conditions) of 1 to 60 g / 10. And the weight average molecular weight (Mw) thereof is preferably 10,000 to 1,000,000.

The epoxy-modified acrylonitrile-styrene random copolymer is an acrylonitrile-styrene-unsaturated epoxy compound random copolymer. For acrylonitrile-styrene moieties, the above AN-
The same thing as the St-based random copolymer can be used. As the unsaturated epoxy compound, for example, the following formula (Formula 5):

[0026]

[Chemical 5] (In the formula, R _a has 2 carbon atoms having an ethylenically unsaturated bond.
To 18 hydrocarbon groups), unsaturated glycidyl esters represented by the following formula (Formula 6):

[0027]

[Chemical 6] [In the formula, R _b has 2 carbon atoms having an ethylenically unsaturated bond.
To 18 hydrocarbon groups, and X is —CH ₂ —O— or —
φ-O- (where φ represents a phenylene group)]
Unsaturated glycidyl ethers represented by

Such unsaturated glycidyl esters,
Examples of unsaturated glycidyl ethers include glycidyl acrylate and glycidyl methacrylate (GM
A), itaconic acid glycidyl esters, allyl glycidyl ether, 2-methylallyl glycidyl ether, styrene-p-glycidyl ether, and the like. Especially G
MA is preferred. In addition to this, an unsaturated carboxylic acid ester monomer such as methyl methacrylate may be further contained in an amount of up to 99.9% by weight based on the entire epoxy modified AN-St random copolymer.

The acrylonitrile content of the above epoxy-modified AN-St random copolymer is usually 2 to 50% by weight, preferably 20 to 30% by weight, based on 100% by weight of the whole copolymer, and is unsaturated. The epoxy compound content is usually 0.1 to 70% by weight, preferably 5 to 10%
% By weight. The MFR of such an epoxy-modified AN-St random copolymer is 1 to 60 g / 10 minutes,
The Mw is preferably 10,000 to 1,000,000.

Such an epoxy-modified AN-St random copolymer is obtained by polymerizing an AN-St random copolymer and an unsaturated epoxy compound by bulk polymerization, emulsion polymerization, suspension polymerization, solution polymerization or the like. Can be manufactured.

The component (B) is the above epoxy-modified AN.
-St random copolymer or AN with unmodified AN
-St random copolymer. Native AN-St
The system random copolymer is used in an amount of less than 99% by weight based on the total of the modified and unmodified AN-St random copolymers.

The above components (A) and (B) are
(A) 5 to 95 parts by weight, (B) 95 to 5 parts by weight,
Preferably (B) 90 with respect to 10 to 90 parts by weight of (A)
It is used at a ratio of 10 to 10 parts by weight.

Next, in the present invention, in addition to the above (A) and (B), a polyamide and / or polyester (C) is added to 100 parts by weight of the total of (A) and (B). 5 to 100 parts by weight, preferably 1 to 10
Including parts by weight. If the amount of (C) is less than 0.5 parts by weight, the compatibility will be insufficient, and if it is more than 100 parts by weight, water absorption will lower the physical properties and moldability. Such a polyamide or polyester can be obtained by using the acid group or epoxy group of the modified olefin resin of component (A) and the component (B).
Any one can be used as long as it reacts with the epoxy group of the epoxy-modified AS-St random copolymer. Polyamides are known per se, and specific examples thereof include various nylons such as nylon-4, nylon-6, nylon-6,6, nylon-12, nylon-6,10, and polyamideimide. These may be used alone or in combination of two or more. Nylon-6 or nylon-6,6 is preferred.

The polyester resin used in the present invention is known per se, and is generally a thermoplastic resin comprising a saturated dicarboxylic acid component and a saturated dihydric alcohol component, or a thermoplastic resin obtained by ring-opening polymerization of a cyclic ester. is there. Examples of the saturated dicarboxylic acid include terephthalic acid and isophthalic acid, and examples of the saturated dihydric alcohol include ethylene glycol, propylene glycol, butylene glycol, hexamethylene glycol and bisphenol A.
Etc. Specifically, polyethylene terephthalate (PET), polybutylene terephthalate (PB)
T), polyhexamethylene terephthalate, polycyclohexane-1,4-dimethylol terephthalate, polyneopentyl terephthalate, polyarylate and the like. Further, ε-caprolactone is mentioned as the cyclic ester, and polycaprolactone is mentioned as a specific thermoplastic resin. These may be used alone or in combination of two or more. Of these, polyethylene terephthalate and polybutylene terephthalate are particularly preferable.

In the case of polyethylene terephthalate, the intrinsic viscosity [η] is 0.30 to 0.80 and the terminal carboxyl group concentration is
It is preferably from 15 to 200 meq / Kg. When the intrinsic viscosity [η] exceeds 0.80, the melt viscosity of the graft copolymer becomes high and gel is formed. The terephthalic acid component in polyethylene terephthalate may be substituted with an alkyl group, a halogen atom or the like, and the glycol component may be up to about 50% by weight of other glycol such as 1,4-butylene glycol. , Propylene glycol, hexamethylene glycol, etc. may be contained.

In the case of polybutylene terephthalate, the intrinsic viscosity [η] is preferably 0.3 to 1.20 and the terminal carboxyl group concentration is preferably 15 to 200 meq / Kg. In this case as well, the terephthalic acid component may be substituted with an alkyl group, a halogen atom or the like, and the glycol component may be 50% by weight in addition to 1,4-butylene glycol.
To the extent other glycols, such as ethylene glycol,
It may contain propylene glycol, hexamethylene glycol or the like.

In the present invention, either or both of the above-mentioned polyamide and polyester can be used as the component (C).

In the resin composition of the present invention, in addition to the above components, conventional additives such as pigments, dyes, fillers, reinforcing agents, heat stabilizers, light stabilizers, antioxidants, plasticizers, A flame retardant, an antistatic agent, a release agent, a foaming agent, a nucleating agent, etc. can be added.

The resin composition of the present invention can be produced by melt-kneading the above-mentioned components. The melt-kneading temperature is usually 230 to 300 ° C, preferably 250 to 280 ° C.
Is. The apparatus used for melt-kneading is a usual apparatus, for example, a single-screw or twin-screw extruder, a Banbury mixer, a kneading roll, a Brabender, a kneader, a Henschel mixer,
It can be performed using a batch kneader or the like.

[0040]

In the thermoplastic resin composition of the present invention, the component (C) polyamide or polyester reacts with the acid group or epoxy group of the (A) modified polyolefin resin, and (B) epoxy modified AN-St random It also reacts with the epoxy groups of the copolymer. Therefore, by melt-kneading, a reaction occurs between them, and the modified olefin resin to
Polyamide (or polyester) to epoxy modified AN
A graft body of the -St random copolymer, that is, a compatibilizer is produced. It is speculated that such a mechanism improves the compatibility of (A) and (B).

[0041]

The present invention will be described in more detail by the following examples.

The raw materials used in each example and comparative example are as follows. 1. Olefin resin (1-1) Polypropylene (homopolymer, sometimes abbreviated as PP below), J209 (trademark, manufactured by Tonen Kagaku KK), melt flow rate (230 ° C, load 2.16)
kg, the following are all measured under the same conditions) 9.0 g
/ 10 minutes (1-2) ethylene-propylene block copolymer (hereinafter sometimes abbreviated as EPR), BJ309 (trademark, manufactured by Tonen Chemical Co., Ltd.), melt flow rate 9.0 g / 1
0 minutes, ethylene content 7.5% by weight 2. Modified olefin resin (2-1) Maleic anhydride modified polypropylene Polypropylene homopolymer (trademark; Y201, manufactured by Tonen Kagaku Co., Ltd., MFR 1.5 g / 10 min) 100 parts by weight, maleic anhydride (MAH) 3 parts by weight and 1 part by weight of Perhexin 2-5B (manufactured by Nippon Oil & Fats Co., Ltd.) as a peroxide catalyst was dry-blended and melt-kneaded with a 65 mm twin-screw extruder at 230 ° C. and 100 rpm to carry out a graft reaction. An acid-modified polypropylene (hereinafter abbreviated as MAH-PP) was obtained. The average reaction time during grafting was about 1 minute. The maleic anhydride graft ratio of the obtained MAH-PP was 0.3% by weight. (2-2) Maleic anhydride modified propylene-non-conjugated diene random copolymer (propylene-non-conjugated diene random copolymer (PPD
M) 100 parts by weight, maleic anhydride (MAH) 5 parts by weight, and Perhexin 2-5B (manufactured by NOF CORPORATION) as a peroxide catalyst 0.5 parts by weight are dry blended, and a 45 mm twin-screw extruder is used. By 230 ℃, 100rpm
Then, the mixture was melt-kneaded and a graft reaction was carried out to obtain a maleic anhydride-modified propylene-non-conjugated diene random copolymer (hereinafter, abbreviated as MAH-PPDM). The average reaction time during grafting was about 1 minute. Obtained M
The maleic anhydride graft ratio of AH-PPDM was 2.5% by weight. (2-3) Epoxy-modified polypropylene Polypropylene homopolymer (trademark; Y201, manufactured by Tonen Kagaku Co., Ltd., MFR 1.5 g / 10 minutes) relative to 100 parts by weight of the following formula (Formula 7):

[0043]

[Chemical 7] 3 parts by weight of a glycidyl group-containing unsaturated compound (manufactured by Kanegafuchi Chemical Industry Co., Ltd., hereinafter abbreviated as AXE) and perhexin 2-5B as a peroxide catalyst
0.1 part by weight (manufactured by Nippon Oil & Fats Co., Ltd.) was melt-kneaded using a twin-screw extruder (TEX44) at 200 ° C. and 30 rpm for reaction. The epoxy-modified polypropylene obtained had an AX addition rate of 2.4% by weight. The melt flow rate was 7.6 g / 10 minutes. This epoxy modified polypropylene is abbreviated as AXE-PP. 3. Acrylonitrile-styrene random copolymer (3-1) Acrylonitrile-styrene random copolymer (hereinafter sometimes abbreviated as AS), AS230 (trademark, manufactured by Japan Synthetic Rubber Co., Ltd.), melt flow rate 6.62 g / 10 minutes, acrylonitrile content 25% by weight (3-2) acrylonitrile-butadiene-styrene (AB
S) resin (hereinafter abbreviated as ABS), ABS-10
(Trademark, manufactured by Japan Synthetic Rubber Co., Ltd.), melt flow rate 10 g / 10 minutes, acrylonitrile content (as acrylonitrile-styrene 100% by weight) 25% by weight 4. Epoxy-modified acrylonitrile-styrene random copolymer (4-1) Acrylonitrile-styrene-glycidyl methacrylate random copolymer (hereinafter abbreviated as GMA-AS), Marproof G-1505SA (trademark, manufactured by NOF Corporation) ), Glycidyl methacrylate (GM
A) content 5% by weight, acrylonitrile content (assuming 100% by weight of acrylonitrile-styrene) 27% by weight, weight average molecular weight (Mw) 150,000, number average molecular weight (Mn) 55,000 (4-2) acrylonitrile-styrene-glycidyl Methacrylate random copolymer (hereinafter abbreviated as GMA-AS), Marproof G-1005SA (trademark, manufactured by NOF CORPORATION), glycidyl methacrylate (GM
A) Content 5% by weight, acrylonitrile content (as acrylonitrile-styrene 100% by weight) 27% by weight, weight average molecular weight (Mw) 100,000, number average molecular weight (Mn) 40,000 (4-3) acrylonitrile-styrene-glycidyl Methacrylate random copolymer (hereinafter abbreviated as GMA-AS), Bremmer CP510SA (trademark, manufactured by NOF CORPORATION), epoxy equivalent 1500, acrylonitrile content (as acrylonitrile-styrene 100% by weight) 27% by weight, Weight average molecular weight (Mw) 50,00
0, number average molecular weight (Mn) 19,000 5. Polyamide Nylon-6, Grade A28 (Mus Japan Co., Ltd.), number average molecular weight (Mn) = 18,000, below, Ny
It is abbreviated as -6. Polyester Polybutylene terephthalate (PBT), Grade TR
BK (Teijin Limited), number average molecular weight (Mn) = 20,0
00, hereafter abbreviated as PBT 7. Optional components Glycidyl methacrylate-methyl methacrylate copolymer (hereinafter abbreviated as GMA-PMMA), Bremmer CP50M (trademark, manufactured by NOF CORPORATION), epoxy equivalent 310, weight average molecular weight (Mw) 10,000, number average molecular weight ( Mn) 6,000 Examples 1 to 13 and Comparative Examples 1 to 5 The respective components were mixed at a ratio (wt%) shown in Tables 1 to 3 with a Henschel mixer at room temperature, and then using a biaxial kneader having a diameter of 45 mm. Kneading was performed at 250 ° C. and 200 rpm, and the discharged product was rapidly cooled in water to obtain pellets of the thermoplastic resin composition.

MFR, surface peeling resistance, Izod impact strength, tensile strength, elongation at break, flexural modulus and heat distortion temperature (HDT) were measured for the obtained resin composition. The results are shown in Tables 1-3.

The surface peel resistance is 1 on the pellet surface.
100 squares of mm ² were made, and a tape peeling test was performed on that portion, and the number of squares remaining without peeling out of 100 pieces was evaluated. As the Izod impact strength, the Izod impact strength at −30 ° C. was measured according to JIS K7110. The tensile strength was measured according to JIS K7113. The breaking elongation was measured according to JIS K7113. The flexural modulus was measured according to JIS K7203. Heat distortion temperature (HDT) is JISK720
It measured according to 7.

[0046]

[Table 1]

[0047]

[Table 2]

[0048]

[Table 3]

According to the present invention, there is provided a resin composition containing an olefin resin and an acrylonitrile-styrene copolymer as the main components, which has improved compatibility and is excellent in surface properties and various mechanical properties. be able to.

Continuation of the front page (51) Int.Cl. ⁵ Identification number Reference number within the agency FI Technical display location C08L 67/02 LNZ 8933-4J 77/00 LQS 9286-4J (72) Inventor Eiji Kuchiki Oimachi, Iruma-gun, Saitama Prefecture Nishitsurugaoka 1-3-1 Tonen Co., Ltd. Research Institute (72) Inventor Yuji Fujita Oi-cho, Iruma-gun, Saitama Nishitsurugaoka 1-3-1 Tonen Research Institute

Claims (1)

[Claims] 1. (A) (a) The following formula (Formula 1): In the formula, R is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, Ar has at least one glycidyloxy substituent, and an aromatic having 6 to 20 carbon atoms which may have other substituents. A glycidyl compound represented by a group hydrocarbon having n representing an integer of 1 to 4, or (b) an olefin resin modified with an unsaturated carboxylic acid or an anhydride thereof, or an olefin resin and an olefin resin 5-95 Parts by weight, and (B) an epoxy-modified acrylonitrile-styrene random copolymer or 95 to 5 parts by weight of this and an acrylonitrile-styrene random copolymer, and (C) polyamide and / or polyester (A)
0.5 to 10 based on 100 parts by weight of the total of (B) and
A thermoplastic resin composition comprising 0 parts by weight.