JPH0517646A - Thermoplastic resin composition - Google Patents

Abstract

PURPOSE:To prepare a compsn. which has both characteristics inherent in a polyolefin resin and a polyester resin and is excellent in mechanical and surface properties. CONSTITUTION:This compsn. is prepd. by compounding a polyolefin resin (a) which contains a low-mol. wt. modified polyolefin (a1) having a number-average mol.wt. of 2,000-20,000 and a high-mol.wt. modified polyolefin (a2) having a number-average mol.wt. of 10,000-200,000 in wt. ratios of a1/a2 and (a1+a2)/a of (2:98) to (98:2) and 0.05 to 1.0, respectively, with a polyester resin (b) in a wt. ratio of a/b of (5:95) to (95:5).

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a thermoplastic resin composition containing a polyolefin and a polyester. More specifically, polyolefin and polyester are well compatible with each other, and have excellent mechanical properties such as impact resistance and mechanical strength, insulation properties, and surface properties such as appearance. The present invention relates to a thermoplastic resin composition suitable for molded articles such as.

[0002]

2. Description of the Related Art Polyester is a resin having excellent mechanical strength and insulating properties. On the other hand, polyolefin has the characteristics of being lightweight, excellent in impact resistance and good in moldability, but slightly inferior in mechanical strength. For this reason, polyesters have been blended for the purpose of improving the mechanical strength of polyolefins. However, since polyolefin and polyester have poor compatibility with each other, there is a problem that impact resistance and mechanical strength of the thermoplastic resin composition containing both are lowered.
Therefore, a thermoplastic resin composition containing a polyolefin and a polyester may be blended with a polyolefin modified with an unsaturated carboxylic acid or a derivative thereof (JP-A-60-5).
No. 8447, No. 60-67543), an epoxy group-containing copolymer is blended (Japanese Patent Laid-Open Nos. 61-60744 and 61-60746) to improve the compatibility of the two. However, the improvement of mechanical properties and surface properties is still insufficient. Therefore, an object of the present invention is to provide a thermoplastic resin composition in which a polyolefin and a polyester are well compatibilized with each other and have excellent mechanical properties and surface properties.

[0003]

Means for Solving the Problems As a result of intensive studies by the present inventors, two specific types of modified polyolefins, namely a low molecular weight modified polyolefin and a high molecular weight modified polyolefin, were added to a specific amount in a polyolefin and a polyester. The present invention has been accomplished by discovering that when blended, the polyolefin and polyester are satisfactorily compatibilized and a thermoplastic resin composition having excellent mechanical strength and surface properties can be obtained. That is, the present invention provides a composition comprising (a) a polyolefin and (b) a polyester, wherein the (a) polyolefin comprises (a1) a number average molecular weight of 2,
000-20,000 low molecular weight modified polyolefin, (a
2) A high molecular weight modified polyolefin having a number average molecular weight of 10,000 to 200,000 is contained, and the mixing ratio of (a1) and (a2) in the components (a), (b) and (a) is (a1). ) / (A2) = 2/98 to 98/2, {(a1)
+ (A2)} / (a) = 0.05 to 1.0, and (a) /
(B) = 5/95 to 95/5, which provides a thermoplastic resin composition.

Hereinafter, the thermoplastic resin composition of the present invention will be described in detail. (A) of the thermoplastic resin composition component of the present invention
With polyolefin, ethylene and propylene, butene-1, hexene-1,3-methylbutene-1,4-
Methyl-pentene-1, heptene-1, octene-1,
Homopolymer of α-olefin having 3 or more carbon atoms such as decene-1, copolymer of random, block, graft or the like of two or more kinds of these monomers, mixture thereof, ethylene or α-olefin having 3 or more carbon atoms Random, block, graft, etc. copolymers of the main part of the above with other unsaturated monomers. Among these polyolefins, a propylene homopolymer or a copolymer of propylene and ethylene or another α-olefin is preferable, and a copolymer of propylene and ethylene having an ethylene content of 20% by weight or less is particularly preferable. Such polypropylene usually has a melt flow rate (MFR, JIS K7210, load 2.16 kg, 230 ° C.) of about 0.1 to 200 g / 10 minutes.

It is also possible to use a mixture of about 0.1 to 40 parts by weight of an olefin elastomer with 100 parts by weight of the above polypropylene. Here, the olefin elastomer means two or more copolymer rubbers of α-olefins such as ethylene, propylene, butene-1, hexene-1, and 4-methyl-pentene-1, or α-olefins. And a monomer of another kind. Specific examples of the two or more copolymer rubbers of the α-olefin include ethylene-propylene copolymer rubber (EPR) and ethylene-propylene-
Diene copolymer rubber (EPDM) can be mentioned. The diene component in the ethylene-propylene-diene copolymer rubber (EPDM) includes dicyclopentadiene, 1,4-hexadiene, cyclooctadiene,
Examples thereof include non-conjugated dienes such as methylnorbornene and conjugated dienes such as butadiene and isoprene. Other unsaturated monomers copolymerizable with the main part of the α-olefin having 3 or more carbon atoms include vinyl acetate, acrylic acid ester, methacrylic acid ester, vinyl chloride, vinylidene chloride, styrene, in addition to the above-mentioned ethylene. Acrylonitrile or the like can be used. A polypropylene-vinyl acetate copolymer (PP-EVA) is a typical example of a copolymer of an α-olefin and another monomer.
Further, a propylene random copolymer (PPD containing a non-conjugated diene comonomer represented by the following general formula (1)
M) can also be used as component (a).

[0006]

[Chemical 2]

[In the formula, R _{1 to} R ₄ are hydrogen atoms or alkyl groups having 1 to 6 carbon atoms, and n is an integer of 1 to 20. ]

In the present invention, two kinds of modified polyolefins (a1) and (a2) are combined in combination in the above component (a) in order to improve compatibilization. That is, the two types of modified polyolefins (a1) and (a2) modified with different modifiers, one of which has a low molecular weight and the other of which has a high molecular weight, are blended in an amount of 5% by weight or more. The compatibility between polyolefin and polyester can be remarkably improved. Two types of modified polyolefins (a1) and (a2) used here
The range of the molecular weight depends on the type of modifier to be described later, but as a low molecular weight modified polyolefin, the number average molecular weight is in the range of 2,000 to 20,000, preferably 3,000 to 15,000.
The number-average molecular weight of the high molecular weight modified polyolefin is in the range of 10,000 to 200,000, preferably 20,000 to 100,000. When the molecular weight of at least one of the component (a1) and the component (a2) is out of the above range, the effect of improving the compatibility between the polyolefin and the polyester by the addition of these components is insufficient, and the dynamics aimed at by the present invention are insufficient. A thermoplastic resin composition having excellent physical properties and surface properties cannot be obtained.

In the present invention, the two types of modified polyolefins (a1) and (a2) contained in the component (a) in an amount of 5% by weight or more are different from the above-mentioned various polyolefins in the following modifiers (unsaturation). Compound). That is, the above components (a1) and (a2)
The unsaturated compound used as a modifier for one of the modified polyolefins is an unsaturated carboxylic acid copolymerizable with an olefin or a derivative thereof, and these are used alone or in combination of two or more. Specific examples include unsaturated mono- or dicarboxylic acids such as acrylic acid, methacrylic acid, maleic acid, fumaric acid, tetrahydrophthalic acid, itaconic acid, citraconic acid, crotonic acid, and isocrotonic acid, or derivatives thereof, such as acids and halides. Examples thereof include amides, imides, anhydrides and esters. Specific examples of the derivative include maleenyl chloride, maleimide, maleic anhydride, methyl acrylate, methyl methacrylate, citraconic anhydride, monomethyl maleate, dimethyl maleate and the like. Among these, unsaturated dicarboxylic acid or its derivative is preferable, and maleic acid or its anhydride is particularly preferable. The unsaturated compound used as the other modifier of the modified polyolefin of the above components (a1) and (a2) is a glycidyl compound having an unsaturated group capable of copolymerizing with an olefin and a glycidyloxy group in the molecule. Yes, these alone,
Alternatively, two or more kinds can be used in combination. As the glycidyl compound, in addition to unsaturated glycidyl esters and unsaturated glycidyl ethers, those represented by the following general formula (2) having an acrylamide group and an epoxy group are preferably used.

[0010]

[Chemical 3]

[Wherein R represents a hydrogen atom or a carbon number of 1 to 6]
Of Ar, Ar is an aromatic hydrocarbon group having 6 to 20 carbon atoms and having at least one glycidyloxy group, and n represents an integer of 1 to 4. Among the glycidyl compounds of the above general formula, glycidyl compounds represented by the following general formula (3) are particularly preferable.

[0012]

[Chemical 4]

[In the formula, R represents a hydrogen atom or a carbon number of 1 to 6
Is an alkyl group. Such a glycidyl compound can be produced, for example, by the method described in JP-A-60-130580. These unsaturated compounds can be used as a modifier for both the low molecular weight modified polyolefin component (a1) and the high molecular weight modified polyolefin component (a2). That is, one of a polyolefin modified with an unsaturated carboxylic acid and a derivative thereof and a polyolefin modified with a glycidyl compound having an unsaturated group and a glycidyloxy group capable of copolymerizing with an olefin in the molecule is a low molecular weight modified polyolefin component. (A
1) and the other may be the high molecular weight modified polyolefin component (a2).

The raw material polyolefin modified with such a modifier may be any of those exemplified in the above-mentioned component (a), and among these, polypropylene is particularly preferably used. As mentioned above, polypropylene includes not only a homopolymer but also a copolymer of ethylene and other α-olefins such as butene and 4-methylpentene-1 up to about 40% by weight.

In the present invention, a preferable combination of the component (a1) and the component (a2) is that one of the modified polyolefins is obtained by modifying the polyolefin with the unsaturated dicarboxylic acid or its anhydride, particularly maleic anhydride.
The other is a glycidyl compound represented by the general formula (2),
In particular, it is modified with the glycidyl compound represented by the general formula (3). Among them, polypropylene is preferably used a combination of polypropylene modified with maleic anhydride and the glycidyl compound, a low molecular weight modified polypropylene modified with maleic anhydride, and a combination of a high molecular weight modified polypropylene modified with the glycidyl compound. Particularly preferred.

The content of the unsaturated compound as the modifier of the component (a1) and the component (a2) varies depending on the kind of the raw material polyolefin and cannot be said unconditionally, but the maleic anhydride used as the component (a1) is used. The low molecular weight graft modified product of 1 to 20% by weight, preferably 2 to
It is 15% by weight. Further, it is a high molecular weight graft modified product of the glycidyl compound used as the component (a2).
It is about 2 to 10% by weight, preferably about 0.2 to 5% by weight.

The component (a1) and the component (a
The modified polyolefin of 2) can be obtained by utilizing a known modification method such as a solution method or a melt-kneading method. Further, commercially available products having the above-mentioned molecular weight ranges may be appropriately selected and used. As a specific example of the modification method, modification (graft polymerization) of polypropylene with the glycidyl compound is shown below. In the melt-kneading method, polypropylene and the above-mentioned glycidyl compound, and if necessary a catalyst,
These ingredients are put into an extruder, a twin-screw kneader, etc.
While heating to a temperature of about 300 ° C and melting, 0.1-2
By kneading for about 0 minutes, a modified polypropylene having a target molecular weight range is obtained. In the case of the solution method,
90% by dissolving the above starting materials in an organic solvent such as xylene,
By carrying out modification with stirring at a temperature of about 200 ° C. for about 0.1 to 100 hours, a modified polypropylene having a target molecular weight range is obtained.

In any modification method, a conventional radical polymerization catalyst can be used as a catalyst, for example, benzoyl peroxide, lauroyl peroxide, ditertiary butyl peroxide, acetyl peroxide, tert-butyl peroxybenzoic acid. Acids, peroxides such as dicumyl peroxide, peroxybenzoic acid, peroxyacetic acid, tertiary butyl peroxypivalate, 2,5-dimethyl-2,5-ditertiary butyl peroxyhexyne, and azobisisobutyronitrile Diazo compounds and the like are used. The amount of the catalyst added is about 0.1 to 10 parts by weight with respect to 100 parts by weight of the modifying glycidyl compound. Although it is possible to add a phenolic antioxidant during the above graft reaction, it is better not to use an antioxidant unless a radical polymerization catalyst is added. Modification with another unsaturated compound such as maleic anhydride can also be carried out according to the above-mentioned method.

(B) of the thermoplastic resin composition component of the present invention
Polyester is a thermoplastic resin generally obtained by polycondensation of a saturated dicarboxylic acid and a saturated dihydric alcohol,
Examples thereof include polyethylene terephthalate, polypropylene terephthalate, polytetramethylene terephthalate (polybutylene terephthalate), polyhexamethylene terephthalate, polycyclohexane-1,4-dimethylol terephthalate, and polyneopentyl terephthalate. Of these, polyethylene terephthalate and polybutylene terephthalate are preferred.

The polyester as the above component (b) is
The intrinsic viscosity [η] (dl / g) obtained from the solution viscosity measured at 25 ° C in an o-chlorophenol solvent is 0.30 to 1.
It is preferable that the terminal carboxyl group has a terminal carboxyl group concentration of 10 to 200 meq / kg. In the case of polyethylene terephthalate, it is preferable that the intrinsic viscosity [η] is 0.30 to 1.2 and the terminal carboxyl group concentration is 10 to 200 meq / kg.
The terephthalic acid component in polyethylene terephthalate may be substituted with an alkyl group, a halogen group or the like, and the glycol component may be, in addition to ethylene glycol, up to about 50% by weight of another glycol such as 1,4-.
It may contain butylene glycol, propylene glycol, hexamethylene glycol and the like. In the case of polybutylene terephthalate, the intrinsic viscosity [η] is 0.30
It is preferable that the terminal carboxyl group concentration is 10 to 200 meq / kg. Also in this case, the terephthalic acid component may be substituted with an alkyl group, a halogen group or the like, and the glycol component may be 1,4-butylene glycol or another glycol up to about 50% by weight, such as ethylene glycol or propylene glycol. Hexamethylene glycol and the like may be contained.

The mixing ratios of the components (a), (a1), (a2) and (b) are as follows: component (a1) (low molecular weight modified polyolefin) and component (a2) (high molecular weight modified polyolefin). Is 2/98 to 98 / by weight ratio
2, preferably 5/95 to 50/50. If the weight ratio is less than 2/98, the low molecular weight modified polyolefin is too small, and if it exceeds 98/2, the high molecular weight modified polyolefin is too small, and the effect of improving the compatibility by the combination of both is not recognized.

The proportion of (a1) and (a2) in the component (a) (polyolefin) is the weight ratio (that is,
{(A1) + (a2)} / (a)) is 0.05 to 1.0, preferably 0.1 to 0.9. The present invention also includes a composition in which the total amount of component (a) is (a1) and (a2). That is, the composition comprising the polyester of the component (b), the low molecular weight modified polyolefin of the component (a1) and the high molecular weight modified polyolefin of the component (a2) is excellent in compatibility and has a feature of the polyolefin and the polyester. It is included in the present invention. However, component (a)
If the weight ratio of the modified polyolefin is less than 0.05, the reaction between the polyester and the modified polyolefin becomes insufficient,
The effect of improving the compatibility by blending the modified polyolefin is not recognized.

Further, the weight ratio of the component (a) to the component (b) (polyester) (that is, (a) / (b)) is 5 /.
It is 95 to 95/5, preferably 10/90 to 90/10. If the weight ratio is less than 5/95, the moldability is lowered, and if it exceeds 95/5, the mechanical properties are lowered.

In the thermoplastic resin composition of the present invention, for the purpose of further strengthening and modifying the same, fillers and reinforcing materials such as glass fibers, heat stabilizers, light stabilizers, flame retardants, plasticizers, antistatic agents. , A foaming agent, a nucleating agent and the like can be added.
The thermoplastic resin composition of the present invention, the above components are uniaxial extruder, biaxial extruder, Banbury mixer, kneading rolls,
It can be obtained by heating and melting and kneading at 230 to 320 ° C., preferably 250 to 280 ° C. using a kneader such as Brabender.

[0025]

The thermoplastic resin composition of the present invention comprises a polyolefin blended with a low molecular weight modified polyolefin and a high molecular weight modified polyolefin and a polyester, and the resin component polyolefin and the polyester are well compatibilized. It is a thermoplastic resin composition which is excellent in impact resistance, heat resistance, mechanical strength, and insulation, and has no surface peeling. Although the reason why the thermoplastic resin composition of the present invention produces such an effect is not always clear, it is a resin component that is lightweight and has excellent impact resistance, and is excellent in heat resistance, mechanical strength, and insulation. Polyester and
It is considered that the two modified polyolefins having different molecular weights interact with each other to be compatibilized. That is,
(i) Compatibility between the component (a) polyolefin and the component (a2) high molecular weight modified polyolefin, (ii) interaction between the component (a2) high molecular weight modified polyolefin and the component (a1) low molecular weight modified polyolefin ( Reaction), and (ii
i) It is considered that the compatibilization of the polyolefin and the polyester is achieved through the interaction (reaction) between the low molecular weight modified polyolefin of the component (a1) and the polyester of the component (b).

[0026]

EXAMPLES The present invention will be described in more detail with reference to Examples and Comparative Examples. In each of the examples and comparative examples, the following materials were used as raw materials and additives. [1] Polyolefin polypropylene homopolymer PP: [J209 manufactured by Tonen Chemical Co., Ltd., melt flow rate (MFR, 230 ° C., 2.16 kg load) 8.5 g / 10 min] [2] Monomer for modification (1) MAH (maleic anhydride) ) (2) AXE: glycidyl compound represented by the following chemical formula (Kanefuchi Chemical Co., Ltd.)

[0027]

[Chemical 5]

[3] Radical generator POX: Perhexin 25B [manufactured by NOF CORPORATION] [4] Polyester (1) Polyethylene terephthalate PET: [TR 4550 manufactured by Teijin Limited, intrinsic viscosity [η]
0.7] (2) Polybutylene terephthalate PBT: [C7000N manufactured by Teijin Limited, intrinsic viscosity [η]
1.05]

[5] High molecular weight modified polyolefin (1)Synthesis example 1 of high molecular weight modified polyolefin   Polypropylene homopolymer [Y manufactured by Tonen Chemical Co., Ltd.
201, melt flow rate (MFR, 230 ℃, 2.16kg
Load) 1.5 g / 10 minutes] 100 parts by weight, MAH 3 parts by weight
Parts and 1 part by weight of POX after dry blending
Using a uniaxial extruder having a diameter of 65 mm at 200 ° C. and 100
Melt and knead under the condition of rpm,
Lipropylene (CMP-1) was obtained. This modified polypropylene
The graft ratio of MAH was 0.68% by weight. Na
The graft ratio was calculated by the following method. Modified polypro
IR spectrum of pyrene (boiling modified polypropylene
Soluble in Siren and remove insolubles, then add methanol.
The dissolved components are precipitated, and this is plated to a thickness of about 50 μm.
Measured against the missing item. ) In MAH Cal
The peak related to the expansion and contraction of the bonyl (C = O) bond (1780c
m^-1), And peculiar to isotactic polypropylene
One of the peaks (840 cm^-1) And graph it
And the rate.

(2)Synthesis example of high molecular weight modified polyolefin
Two   Polypropylene homopolymer [Y manufactured by Tonen Chemical Co., Ltd.
201, melt flow rate (MFR, 230 ℃, 2.16kg
Load) 1.5 g / 10 minutes] 100 parts by weight, AXE 3 parts by weight
Parts and 0.1 parts by weight of POX after dry blending,
Using a single-screw extruder with a diameter of 65 mm, the temperature was set to 200 ° C and 10
Melt-kneading at 0 rpm, modification with number average molecular weight 29,000
Polypropylene (CMP-2) was obtained. This modified polypropy
The AX grafting rate of ren was 2.8% by weight. Na
Note that the graft ratio is a value related to the expansion and contraction of the C = O bond of AXE.
Ark (1648cm^-1), Except that the above MAH
It was determined in the same manner as in.

[6] Low molecular weight modified polyolefin As the low molecular weight modified polyolefin, commercially available MAH modified polypropylene having the following number average molecular weight and a synthetic product (AXE modified polypropylene) were used. (1) MAH modified low molecular weight polypropylene (CMP-3):
[Umex 1010 manufactured by Sanyo Kasei Co., Ltd., number average molecular weight
3,000, MAH graft ratio 10% by weight] (2) MAH modified low molecular weight polypropylene (CMP-4):
[Sanyo Chemical Co., Ltd. Yumex 1001, number average molecular weight
15,000, MAH graft ratio 5% by weight] (3) AX-modified low molecular weight polypropylene (CMP-5): polypropylene homopolymer [Y201 manufactured by Tonen Kagaku Co., Ltd.
, Melt flow rate (MFR, 230 ° C., 2.16 kg load) 1.5 g / 10 minutes] 100 parts by weight, 10 parts by weight of AXE and 5 parts by weight of POX were dry blended, and then this was blended using a uniaxial extruder having a diameter of 65 mm, 300 ° C, 100
Melt kneading was carried out under the condition of rpm to obtain a modified polypropylene having a number average molecular weight of 9,000. AXE of this modified polypropylene
The graft ratio was 8.4% by weight. The graft ratio was determined in the same manner as in Synthesis Example 2 above.

[0032]Examples 1-13, Comparative Examples 1-5   Polypropylene (PP) and polyester (PET or
Or PBT) and low molecular weight modified polypropylene (CMP-3
 , CMP-4 or CMP-5) and high molecular weight modified polypropylene
Ren (CMP-1 or CMP-2) at the ratio shown in Table 1.
Diameter after dry blending with a shell mixer
Kneading with a 5 mm twin-screw extruder at 250 ° C and 200 rpm
Then, a resin composition was obtained. The heat capacity obtained in this way
Surface releasability of plastic resin composition, Izod impact at 23 ° C
Measure impact strength, tensile strength, flexural modulus and heat distortion temperature
Decided The results are also shown in Table 1.

[0033]

[Table 1]

[0034]

[Table 2]

[0035]

[Table 3]

The methods for measuring the physical properties shown in Table 1 above are as follows. (1) Melt flow rate: Measured according to JIS K7210. (2) Surface releasability: 100 squares of 1 mm × 1 mm were attached to the surface of the test piece with a razor, cellophane tape (manufactured by Nichiban Co., Ltd.) was attached to the squares, and then peeled off. Among 100 squares, the number of squares left on the surface of the test piece without adhering to the cellophane tape was counted. (3) Izod impact strength: Measured according to JIS K7110. (4) Tensile strength: Measured according to JIS K7113. (5) Flexural modulus: measured according to JIS K7203. (6) Heat distortion temperature: Measured according to JIS K7207.

As is apparent from Table 1, the thermoplastic resin compositions of the present invention are the compositions of Comparative Examples 1 to 3 consisting of unmodified polypropylene and polyester, and Comparative Example in which only high molecular weight modified polyolefine is blended. Compared with the composition Nos. 4 to 5, surface peelability, Izod impact strength, tensile strength,
The flexural modulus and heat distortion temperature were all good.

[0038]

As described in detail above, the thermoplastic resin composition of the present invention is a composition of a polyolefin and a polyester, which comprises a low molecular weight modified polyolefin and a high molecular weight modified polyolefin in order to improve the compatibility of the two. And is excellent in impact resistance, heat resistance, mechanical strength, and insulation, and has good surface properties. Such a thermoplastic resin composition of the present invention is suitable as various engineering plastics, particularly as a resin composition for interior and exterior parts of automobiles, home electric appliance parts, industrial material parts, packaging materials and the like.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Koichi Yokoyama             1-3-1 Nishitsurugaoka, Oi-cho, Iruma-gun, Saitama Prefecture             No. Tonen Research Institute (72) Inventor Yuji Fujita             1-3-1 Nishitsurugaoka, Oi-cho, Iruma-gun, Saitama Prefecture             No. Tonen Research Institute

Claims (3)

[Claims] 1. A composition comprising (a) a polyolefin and (b) a polyester, wherein the (a) polyolefin comprises (a1) a low molecular weight modified polyolefin having a number average molecular weight of 2,000 to 20,000 and (a2) a number average. Molecular weight 10,000-20
And (a1) and (a) in the above-mentioned components (a), (b) and (a).
The mixing ratio of 2) is (a1) / (a2) = 2 / by weight ratio.
98-98 / 2, {(a1) + (a2)} / (a) = 0.
05-1.0, and (a) / (b) = 5 / 95-95 / 5
And a thermoplastic resin composition. 2. One of component (a1) and component (a2) is a polyolefin modified with one or more compounds selected from unsaturated carboxylic acids and their derivatives, and the other is one or more having a glycidyloxy group. 2. A polyolefin modified with the unsaturated glycidyl compound of 1.
The thermoplastic resin composition according to. 3. An unsaturated carboxylic acid and its derivative are
Unsaturated dicarboxylic acid and its acid anhydride, the unsaturated glycidyl compound is represented by the following general formula: [In the formula, R is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, Ar is an aromatic hydrocarbon group having 6 to 20 carbon atoms having at least one glycidyloxy group, and n
Represents an integer of 1 to 4. ] The thermoplastic resin composition according to claim 2, which is one or more glycidyl compounds represented by the formula: