JP2001172501A - Thermoplastic resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thermoplastic resin composition which has improved mechanical characteristics such as toughness and impact strength, causes little amount of evolved gas when melt kneaded and molded, and possesses excellent thermal resistance. SOLUTION: The thermtoplastic resin composition with toughness has as the essential components (A) a polyarylene sulfide with a functional group having a reactivity with an epoxy group; (B) an epoxidated, aromatic vinyl/ conjugated diene-based copolymer; and (C) a hydrogenated, diene-based block copolymer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention comprises a polyarylene sulfide having a specific functional group, an epoxidized aromatic vinyl-conjugated diene copolymer, and a hydrogenated diene block copolymer as essential components. The present invention relates to a polyarylene sulfide-based resin composition which exhibits good compatibility as well as molded article performance by forming a partially crosslinked structure in which a functional group of each resin reacts with each other in a thermoplastic resin composition. is there.

[0002]

2. Description of the Related Art Polyphenylene sulfide (hereinafter PPS)
Polyarylene sulfide resin represented by a) has heat resistance, chemical resistance and excellent mechanical properties,
Molded articles formed by adding a reinforcing agent such as glass fiber are widely used in the fields of automobiles and electronics.

[0003] On the other hand, on the other hand, properties such as toughness typified by impact resistance and tensile elongation and slidability are inferior. In recent years, for the purpose of improving toughness, an elastomer such as an SBR copolymer has been uniformly dispersed in PPS. The technology to make it work has been widely studied.

[0004] However, the SBR copolymer has poor compatibility with PPS, so that it has not only poor appearance but also insufficient improvement in toughness.

To improve compatibility, for example, Japanese Patent Application Laid-Open No. Hei 6-279676 discloses a polymer alloy comprising PPS and an olefin elastomer such as a glycidyl methacrylic acid-containing ethylene- (meth) acrylic acid alkyl ester copolymer. Technology has been disclosed.

However, olefin elastomers containing a glycidyl methacrylate group described in the above-mentioned Japanese Patent Application Laid-Open No. Hei 6-279676 have significantly lower heat resistance than PPS. Therefore, despite the relatively good compatibility with PPS, the elastomer deteriorates during the melt-kneading of the alloy and during the molding process, causing a problem that the mechanical properties are deteriorated. Besides, PPS
In addition, there is a problem that the elastomer is thermally decomposed at the time of melt-kneading with the alloy and at the time of forming the alloy to generate gas.

[0007]

The problem to be solved by the present invention is that the mechanical properties such as toughness and impact strength are improved, the amount of gas generated during melt-kneading and molding is small, and the heat resistance is further improved. To provide a thermoplastic resin composition having excellent heat resistance.

[0008]

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that polyarylene sulfide can be used as an epoxidized aromatic vinyl-conjugated diene-based copolymer and a hydrogenated diene-based block copolymer. It has been found that the above-mentioned problems can be solved by blending the coalesced particles and partially cross-linking them, thereby completing the present invention.

That is, the present invention relates to a polyarylene sulfide (A) having a functional group reactive with an epoxy group.
And a toughened thermoplastic resin composition comprising, as essential components, an epoxidized aromatic vinyl-conjugated diene-based copolymer (B) and a hydrogenated diene-based block copolymer (C).

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The polyarylene sulfide (A) having a functional group reactive with an epoxy group used in the present invention has a main structural unit represented by the general formula: -Ar-
S- (wherein Ar is a group containing at least one carbon six-membered ring
Is a polymer represented by a valence aromatic group, and S is a sulfur atom). 2 which constitutes this polyarylene sulfide
Examples of the valent aromatic group include a p-phenylene group, an m-phenylene group, a 2,6-naphthalene group, a 4,4-biphenylene group, a p, p'-bibenzyl group, and a core substituent thereof. Among these, polyphenylene sulfide having a non-substituted p-phenylene group is preferable because of excellent moldability.

The polyarylene sulfide (A) having a functional group reactive with an epoxy group may have a linear molecular structure or a molecular structure having a branched or crosslinked structure.

The polyarylene sulfide (A) having a functional group reactive with an epoxy group has the above-mentioned general formula: -Ar-S- as a repeating unit.
A trivalent aromatic group may be introduced into a part of the structure. Thereby, the polymer chain can take a branched structure.
In this case, a trivalent aromatic group is used to prevent a decrease in crystallinity.
It is preferably at most mol%.

The polyarylene sulfide (A) having a functional group reactive with an epoxy group used in the present invention.
May be composed of only the structure represented by the general formula: -Ar-S-, or may include other structural units in the molecule. It is preferable to include at least 70 mol% of the structural unit since crystallinity and glass transition point are improved, and moldability, heat resistance, chemical resistance, mechanical properties, and the like are extremely excellent.

When the polyarylene sulfide (A) having a functional group reactive with an epoxy group has a structural unit represented by the above general formula and another copolymer structural unit, the other copolymer structural unit Although it is not particularly limited, examples thereof include a diphenyl ketone structure, a diphenylsulfonyl structure, and a diphenyl ether structure.

As the diphenyl ketone structure, specifically,-(C6H4) -CO- (C6H4) -S-diphenylsulfonyl structure, specifically,-(C6H4) -SO2- (C6H4) -S-diphenylether structure Specific examples include-(C6H4) -O- (C6H4) -S-.

The polyarylene sulfide (A) having a functional group reactive with an epoxy group used in the present invention has a functional group reactive with an epoxy group in a polymer structure. Examples of the functional group include an amino group, a carboxyl group, a carboxylate group, an amino acid group, an amino acid base, a thiol group, a hydroxyl group, an alcoholate group, and a thiolate group.

Although the melt viscosity of the polyarylene sulfide (A) having a functional group reactive with the epoxy group is not particularly limited, it has excellent characteristics unique to the polyarylene sulfide such as moldability and heat resistance. In order to
The melt viscosity at a shear rate of 100 [1 / s] at 315 ° C. is preferably 20 to 1000 [Pa · S].

Next, the epoxidized aromatic vinyl-conjugated diene copolymer (B) used in the present invention will be described. The epoxidized aromatic vinyl-conjugated diene copolymer is not particularly limited. Examples of the vinyl aromatic compound used as a raw material include styrene, α-methylstyrene, vinyltoluene, p-tertiary butylstyrene, and divinylbenzene. , P-methylstyrene, 1,1-diphenylstyrene and the like, one or more of which can be selected, and styrene is particularly preferred. As the conjugated diene compound used as a raw material, for example, butadiene, isoprene, 1,3-pentadiene, 2,3-dimethyl-
1,3-butadiene, piperylene, 3-butyl-1,3
One or more of octadiene, phenyl-1,3-butadiene and the like can be selected, and among them, butadiene, isoprene and a combination thereof are preferable. Preferred epoxidized aromatic vinyl-conjugated diene copolymers using such raw materials include styrene-butadiene random copolymer, styrene-butadiene block copolymer, styrene-isoprene block copolymer, and styrene-isoprenebutadiene. Copolymer, isoprene-butadiene copolymer, partially hydrogenated styrene-butadiene block copolymer, partially hydrogenated styrene-isoprene block copolymer, partially hydrogenated isoprene-butadiene block copolymer, partially hydrogenated styrene-butadiene random Copolymers and the like can be mentioned. The molecular structure of the block polymer may be linear, branched, radial, or any combination thereof.

The epoxidized aromatic vinyl-conjugated diene copolymer (B) used in the present invention contains unsaturated carbon (double bond) derived from the conjugated diene compound of the aromatic vinyl-conjugated diene copolymer. Those oxidized with an organic peracid and epoxidized are preferred. Epoxy-modified copolymers oxidized with organic peracids to introduce epoxy groups, compared to epoxy-modified copolymers modified with (meth) acrylic monomers such as glycidyl methacrylate,
Thermal decomposition and self-crosslinking due to the introduction of an epoxy group are unlikely to occur, and are preferred from the viewpoint of reactivity with polyarylene sulfide (A).

The epoxidized aromatic vinyl-conjugated diene copolymer (B) of the present invention is not particularly limited in molecular weight, but has a number average molecular weight of 5,000 from the viewpoint of moldability, heat resistance and mechanical strength. Preferably it is ~ 500,000.

The method for producing the epoxidized aromatic vinyl-conjugated diene copolymer (B) of the present invention is not particularly limited. For example, an aromatic vinyl-conjugated diene copolymer is prepared by adding an aromatic organic solvent to an inert organic solvent. In the epoxidation using an organic peracid as an epoxidizing agent in the neutralization of the by-product acid component,
Alternatively, remove by washing with water. Thereafter, the solvent is removed from the product by a method of performing reprecipitation and drying, a method of removing the inert solvent by steam stripping, or the like, or a method of directly evaporating the inert solvent by heat. A conjugated diene copolymer is obtained.

The content of the aromatic vinyl compound in the epoxidized aromatic vinyl-conjugated diene copolymer (B) is 5
It is preferably from 0 wt% to 85 wt%. In addition, epoxidized aromatic vinyl-conjugated diene copolymers having different aromatic vinyl compound contents are mixed (for example, epoxidized aromatic vinyl-conjugated diene copolymer having a styrene content of 40 wt% and styrene). An epoxidized aromatic vinyl-conjugated diene copolymer (B) having a content of 70 wt% is mixed.), And a styrene content of 50 wt% to 80 wt%.
The effect in the range described above is also exhibited. That is, the epoxidized aromatic vinyl-conjugated diene copolymer having different contents of the aromatic vinyl compound is mixed, and the content of the aromatic vinyl compound in the entire epoxidized aromatic vinyl-conjugated diene copolymer is reduced. The content of 50 wt% to 85 wt% is also included in the scope of the present invention. When the content of the aromatic vinyl compound is 50% by weight to 85% by weight, the effects of improving the molded appearance, compatibility, and toughness are improved.

The amount of the epoxy group contained in the epoxidized aromatic vinyl-conjugated diene copolymer (B) is as follows:
Although not particularly limited, the oxirane oxygen concentration is 1.0 to 5.
The content is preferably in the range of 0 wt% from the viewpoint of reactivity with the polyarylene sulfide (A).

Further, when the content of the component (A) in the thermoplastic resin composition of the present invention is 70 to 95% by weight, the amount of the epoxy group is determined as follows:
And (C) and (D), that is, epoxidized aromatic vinyl-conjugated diene-based copolymer (B), hydrogenated diene-based block copolymer (C), and other than (A) to (C) described below. It is preferable that the concentration is such that the oxirane oxygen concentration is at least 0.5 wt% with respect to the total of the thermoplastic resin (D). When the oxirane oxygen concentration is less than 0.5 wt% (A)
Poor compatibility with components, resulting in poor molding appearance.

The hydrogenated diene-based block copolymer (C) used in the present invention is an essential component for imparting toughness and improving mechanical properties such as impact resistance of the composition. By adding to the thermoplastic resin composition, mechanical properties and toughness can be remarkably improved, and generation of gas during molding can be suppressed.

Hydrogenated diene block copolymer (C)
Has a block composed of a conjugated diene compound,
What is necessary is just to hydrogenate the conjugated diene block, and there is no particular limitation. Specifically, an aromatic vinyl-conjugated diene block copolymer is preferable, and among them, a hydrogenated styrene-butadiene block copolymer, a hydrogenated styrene-isoprene block copolymer, a hydrogenated styrene-isoprenebutadiene block copolymer, and the like. Is particularly preferred. Tuftec (Asahi Kasei), which is commercially available as a hydrogenated diene-based block copolymer (C),
Clayton (shell), Dynaron (JSR), Septon (Kuraray), Hibler (Kuraray), and compound products using these can be used.

Further, the content of aromatic vinyl in the hydrogenated diene block copolymer (C) is from 20 wt% to 4 wt%.
It is preferably 0 wt%. Here, a hydrogenated diene block copolymer having a styrene content of 30 wt% may be used alone, or a hydrogenated diene block copolymer having a styrene content of 20 wt% and a styrene content of 3 wt%.
The total styrene content may be in the range of 20 to 40 wt% by using 0 wt% of a hydrogenated diene-based block copolymer in combination. The styrene content is 20 to 40 w as described above.
Those having t% are effective in expressing the functions of the appearance and toughness of the molded product.

The mixing ratio of the components (A) to (C) of the present invention is not particularly limited, but (B) / (C) on a weight basis in view of the good toughness of the molded product. = (10
-90) / (90-10) and (A) /
It is preferable that [(B) + (C)] = (70-95) / (30-5).

In the present invention, in addition to the above components (A) to (C), a thermoplastic resin (D) other than the thermoplastic resin contained in the components (A) to (C) is blended. In this case, the content of the thermoplastic resin (D) other than (A) to (C) is not particularly limited, but (B) / (B) on the basis of weight from the viewpoint that the toughness of the molded product is good. C) = (1)
0-90) / (90-10), (A) / [(B) +
(C) + (D)] = (70-95) / (30-5), and preferably (D) / [(B) + (C)] = 5 or less.

The thermoplastic resin (D) other than the thermoplastic resins contained in the components (A) to (C) is not particularly limited, but specific examples thereof include polypropylene, polyethylene, polybutylene, polystyrene, polyester, and polycarbonate. Is mentioned. Among them, the mechanical strength of molded products,
Polypropylene, ethylene propylene rubber, polyethylene, polybutylene terephthalate,
Polyethylene terephthalate and polycarbonate are preferred.

The molecular weight of the thermoplastic resin (D) other than the thermoplastic resins contained in the components (A) to (C) is not particularly limited, but the number average molecular weight is significant because the effect of improving the mechanical strength is remarkable. Is preferably in the range of 10,000 to 1,000,000.

The method for producing the thermoplastic resin composition of the present invention from the components (A) to (C) described above and the component (D) is not particularly limited. And a method in which additives are melt-kneaded using a melt-kneader such as a single-screw extruder, a twin-screw extruder, a Brabender mixer, a kneader, or a mixing roll, if necessary.

As a specific method of melt kneading, the above-mentioned components and, if necessary, additives are uniformly mixed by a mixer, supplied to an extruder, melt-kneaded at 280 ° C. to 330 ° C., and extruded into a strand. It is preferable to cool and then cut the dried product to obtain a composition.

In this manufacturing method, for example,
The components (A) to (D) and the additives may be collectively introduced into an extruder and melt-kneaded, or (B)
A thermoplastic resin composition is prepared by melt-kneading the components (D) and a part of the additives, and then the obtained thermoplastic resin composition, the component (A), and various additives are introduced into an extruder. Then, the mixture may be melt-kneaded.

In the thermoplastic resin composition of the present invention thus produced, the functionalities of the polyarylene sulfide (A) and the epoxidized aromatic vinyl-conjugated diene copolymer (B) are respectively contained. The groups react with each other to form a partially crosslinked structure, thereby exhibiting excellent compatibility.

Examples of the above-mentioned additives include a reaction accelerator between a functional group in the polyarylene sulfide (A) and an epoxy group in the epoxidized aromatic vinyl-conjugated diene copolymer (B). . As a reaction accelerator,
Component (A) to component (C) or component (A) to component (D)
It is preferable to add 0.2 to 1 part by weight of a silane coupling agent to 100 parts by weight of the component composition. Examples of the silane coupling agent include vinyl silane, acrylic silane, epoxy silane, amino silane, chlorosilane, mercapto silane, peroxy silane, and a high molecular weight silane coupling agent thereof, with amino silane being particularly preferred.

The thermoplastic resin composition of the present invention has a reactivity between the epoxy group in the epoxidized aromatic vinyl-conjugated diene copolymer (B) and the functional group in the polyarylene sulfide (A). For the purpose of enhancing, an epoxy curing catalyst may be added. Known epoxy curing catalysts may be used, but tertiary amines, quaternary ammonium salts and tertiary phosphines are particularly preferred.

Other additives include pigments, dyes, antioxidants, flame retardants, ultraviolet absorbers, lubricants, antistatic agents,
Plasticizers, release agents and the like can be mentioned. Among them, epoxidized aromatic vinyl-conjugated diene-based copolymer, hydrogenated aromatic vinyl-conjugated diene-based block copolymer, to suppress the molecular weight reduction due to thermal decomposition of other thermoplastic resins,
It is preferable to add an antioxidant. As an antioxidant to be used, one or more types are selected from hindered amines, hindered phenols, phosphorus, thiols, etc.
Component (A) to component (C) or component (A) to component (D)
It is advisable to add 0.1 to 2% by weight to 100 parts by weight of the component composition.

Further, in addition to the above-mentioned additives, the following reinforcing materials and / or fillers can be simultaneously added to the thermoplastic resin composition of the present invention, if necessary. As the shape of these reinforcing materials and / or fillers, powders, granules, flat plates, scales, needles, spheres, hollows, fibers and the like can be used. Specifically, powdery and granular fillers such as calcium sulfate, calcium silicate, clay, talc, alumina, silica sand, glass powder, metal powder, graphite, silicon carbide, silicon nitride, silica, boron nitride, aluminum nitride, carbon black, Metallic foil such as mica, glass plate, aluminum flake, flat or flaky filler such as graphite, hollow filler such as metal balloon, glass balloon, glass fiber, carbon fiber, graphite fiber, whisker, metal fiber, asbestos And the like.

[0040]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to the following examples. In Examples,% and parts are by weight unless otherwise specified.

The components used in the examples and comparative examples are as follows. Component (A): The melt viscosity at 300 ° C. is 105 (P
a. s) linear polyphenylene sulfide. Component (B) (B) -1: Asaflex 810, a styrene butadiene copolymer manufactured by Asahi Kasei Corporation (styrene content: 70 wt%)
Epoxidized with peracetic acid. Oxirane oxygen concentration
2.0 wt% (B) -2: Styrene-butadiene block copolymer TR2000 manufactured by JSR Corporation (styrene content: 40 wt%)
%) Epoxidized with peracetic acid. Oxirane oxygen concentration 3.0 wt% Component (C) (C) -1: Hydrogenated styrene-isoprene block copolymer Hibler 7125 manufactured by Kuraray Co., Ltd. (styrene content 20 wt%) (C) -2: Kuraray Co., Ltd. Hydrogenated styrene-isoprene block copolymer Septon 2002 (styrene content 30 wt%) Component (D) (D) -1: Polypropylene "J-108" manufactured by Grand Polymer Co., Ltd. (D) -2: Polyplastics Polybutylene terephthalate "Duranex 400FP" manufactured by Co., Ltd. Component (E): an olefin-based copolymer having an epoxy group having a ratio of (ethylene) / (glycidyl methacrylate copolymer) = 85/15, Nippon Petrochemical Lexpearl “RA-3150” manufactured by Co., Ltd. Stabilizer: Hindered phenolic antioxidant “Irgano X1010 "(Stabilizer manufactured by Ciba-Gaiky Co., Ltd.) Silane coupling agent: 3-aminopropyltriethoxysilane.

Incidentally, the measurement of each physical property value was carried out by the following methods. (1) Tensile properties: A test piece for measuring tensile properties obtained by injection molding was measured by the following method. Measuring device: ORIENTC RTC-1350A Test method: ASTM D-638 (2) Izod impact strength: Izod impact value test specimens obtained by injection molding were measured by the following method. Measuring device: Universal impact tester, universal type, manufactured by Toyo Seiki Co., Ltd. Test method: ASTM D-256 (3) Load deflection temperature: A test piece for measuring the load deflection temperature obtained by injection molding was measured by the following method. Measuring device: HDT tester S3-DH, manufactured by Toyo Seiki Test method: ASTM D-648 (4) Heat loss measurement: The resin composition melt-kneaded by the above method was cooled, pelletized, and dried. After drying, the heat loss was measured by the following method. The weight of the sample when the set temperature is reached is represented by w (0), and the hold time t at the set temperature
The weight after completion of the minute is defined as w (t), and the weight loss on heating (%) = ｛w
(0) −w (t)｝ × 100 / w (0). Measurement sample weight: 40 mg Measuring device: EXSTAR6000 TG / DTA620
0, manufactured by Seiko Electronics Co., Ltd. Measurement temperature: 290 ° C., hold time: 30 minutes, heating time until reaching the measurement temperature: 20 ° C./min.

Examples 1 to 6 A mixture having the composition shown in Table 1 was blended using a tumbler. Thereafter, the mixture was melt-kneaded with a twin-screw extruder (AS-30, manufactured by Nakatanani Machine Co., Ltd.) set at a barrel temperature of 290 ° C., and the extruded strand was cooled and solidified, and then pelletized. After drying the obtained pellets at 120 ° C. for 4 hours, an injection molding machine (IS-10) was used.
0E-3A manufactured by Toshiba Machine Co., Ltd.) at a cylinder temperature of 290 ° C. and a mold temperature of 150 ° C. to obtain a dumbbell for tensile test, a test piece for Izod impact strength test, and a test piece for load deflection temperature test. Was. Various physical properties were measured using these test pieces. The measurement of loss on heating was performed on the dried pellets. Table 1 shows the measurement results.

(Comparative Examples 1 to 5) In the same manner as in Examples 1 to 6, dumbbells for tensile tests, test pieces for Izod impact strength tests, and test pieces for deflection temperature under load having the compositions shown in Table 2 were obtained. Then, various physical properties were measured. The measurement of loss on heating was performed on the dried pellets. Table 2 shows the measurement results.

(Comparative Examples 6 to 8) Instead of the epoxidized aromatic vinyl-conjugated diene copolymer of the component (B),
(E) A dumbbell for a tensile test and a test piece for an Izod impact strength test having the composition shown in Table 3, in the same manner as in Examples 1 to 6, except that an olefin-based copolymer having an epoxy group as a component was used. In addition, a test piece for a load deflection temperature test was obtained, and various physical properties were measured. The measurement of loss on heating was performed on the dried pellets. Table 3 shows the measurement results.

As is evident from the measurement results, the thermoplastic resin composition of the present invention has improved PPS tensile properties and impact resistance, and has good moldability. Further, the thermoplastic resin composition of the present invention comprises a polymer (B), (C)
Or, compared to the case where (D) is melt-kneaded with PPS alone,
It can be seen that the amount of generated gas is small (the loss on heating is small) and the heat resistance is good.

(Example 7) Among components shown in Table 4, all components except PPS of component (A) were dry-blended using a tumbler, and then a twin-screw extruder (barrel temperature set at 290 ° C) AS-30 (manufactured by Nakatani Machinery Co., Ltd.), and the extruded strands were solidified by cooling and then pelletized. The obtained pellets were dried at 120 ° C. for 4 hours, blended with a tumbler together with the PPS of the component (A), and then twin-screw extruder (AS-30 Nakatanani Machine Co., Ltd.) set at a barrel temperature of 290 ° C. )), Melt-kneaded again, and extruded strands were solidified by cooling and then pelletized. The obtained pellets were dried at 120 ° C. for 4 hours, and then molded at a cylinder temperature of 290 ° C. and a mold temperature of 150 ° C. using an injection molding machine (IS-100E-3A manufactured by Toshiba Machine Co., Ltd.) for tensile test. A test piece for dumbbell and Izod impact strength test and a test piece for load deflection temperature test were obtained. Various physical properties were measured using these test pieces. The heating loss measurement was performed on the pellets after the second drying. Table 4 shows the measurement results.

As is clear from the results, the resin composition obtained by melt-kneading the PPS with the resin composition obtained by previously melt-kneading components other than PPS was obtained by melt-kneading all the components at once. Like the obtained resin composition, both tensile properties and impact properties were good.

[0049]

[Table 1]

[0050]

[Table 2]

[0051]

[Table 3]

[0052]

[Table 4]

[0053]

According to the present invention, there is provided a thermoplastic resin composition having improved mechanical properties such as toughness and impact strength, a reduced amount of gas generated during melt kneading and molding, and excellent heat resistance. Can be provided.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) // (C08L 81/02 (C08L 81/02 63:00 63:00 53:02) 53:02) ( C08L 81/02 (C08L 81/02 63:00 63:00 53:02 53:02 101: 00) 101: 00) F-term (reference) 4J002 BB034 BB124 BB174 BC034 BP013 CD192 CF004 CG004 CN011 GN00 GQ00 4J026 HD05 HD06 HD07 HD14 HD15 HD16 4J036 AK02 FB01 FB15 4J100 AB02P AB03P AB04P AB07P AB16P AS01Q AS02Q AS03Q AS04Q AS06Q BC43P BC43Q BC54H CA04 CA31 HA01 HA29 HC36

Claims (9)

[Claims] 1. A polyarylene sulfide (A) having a functional group reactive with an epoxy group, an epoxidized aromatic vinyl-conjugated diene-based copolymer (B), and a hydrogenated diene-based block copolymer (C) and a thermoplastic resin composition having toughness as an essential component. 2. The functional group in the polyarylene sulfide (A) having a functional group reactive with an epoxy group,
The thermoplastic resin according to claim 1, wherein the thermoplastic resin is at least one selected from an amino group, a carboxyl group, a carboxylic acid group, an amino acid group, an amino acid base, a thiol group, a hydroxyl group, an alcoholate group, and a thiolate group. Resin composition. 3. The epoxidized aromatic vinyl-conjugated diene copolymer (B) has an aromatic vinyl content of 50 wt%.
An aromatic vinyl-conjugated diene-based copolymer having an oxirane oxygen concentration of 1% by weight or less, wherein the unsaturated bond derived from the conjugated diene compound is 85% by weight or less.
The content is at least 5 wt% or less.
5. The thermoplastic resin composition according to item 1. 4. The hydrogenated diene block copolymer (C) is an aromatic vinyl-butadiene block copolymer, an aromatic vinyl-isoprene block copolymer, or an aromatic vinyl-isoprene / butadiene block copolymer. The copolymer of at least one or more copolymers selected from the group consisting of hydrogenated aromatic copolymers having an aromatic vinyl content of 20 wt% to 40 wt%. Thermoplastic resin composition. 5. A polyarylene sulfide (A) having a functional group reactive with an epoxy group, an epoxidized aromatic vinyl-conjugated diene-based copolymer (B), and a hydrogenated diene-based block copolymer (C) ) Is (B) / (C) = (10-90) / (90-1) on a weight basis.
0) and (A) / [(B) + (C)] = (7
The thermoplastic resin composition according to any one of claims 1 to 4, wherein the ratio is 0 to 95) / (30 to 5). 6. In addition to the components (A) to (C), (A)
The thermoplastic resin (D) other than the thermoplastic resin contained in the components (C) to (C) is further contained.
6. The thermoplastic resin composition according to any one of items 1 to 5. 7. The thermoplastic resin (D) other than the thermoplastic resins contained in the components (A) to (C) is at least one selected from polyolefins, polyesters and polycarbonates. The thermoplastic resin composition according to claim 6, wherein 8. A polyarylene sulfide (A) having a functional group reactive with an epoxy group, an epoxidized aromatic vinyl-conjugated diene copolymer (B), and a hydrogenated diene block copolymer (C) ) And component (A)
The blending ratio of the thermoplastic resin (D) other than the thermoplastic resin contained in the component (C) is (B) / (C) =
(10-90) / (90-10), (A) / [(B) +
(C) + (D)] = (70-95) / (30-5), and (D) / [(B) + (C)] = 5 or less. Item 10. The thermoplastic resin composition according to any one of Items 6 to 7. 9. The polyarylene sulfide (A) having a functional group reactive with an epoxy group and the epoxidized aromatic vinyl-conjugated diene copolymer (B) have their respective functional groups react with each other. The thermoplastic resin composition according to any one of claims 1 to 8, wherein the thermoplastic resin composition is crosslinked.