JP3067214B2 - Polyphenylene sulfide resin composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyphenylene sulfide resin composition having excellent heat resistance, chemical resistance, mechanical properties, moldability and economy.

[0002]

2. Description of the Related Art Polyphenylene sulfide resin has excellent heat resistance and chemical resistance, and has favorable mechanical properties such as high rigidity. Therefore, it is particularly suitable for reinforcing materials such as glass fiber and carbon fiber and inorganic fillers. In a reinforced form, it is used as a high-performance plastic for applications such as automotive parts, electric / electronic parts, and mechanical parts.

[0003] However, polyphenylene sulfide resin has the above-mentioned excellent properties, but also has problems such as low impact resistance, brittleness, often blackish color, and high price. These polyphenylene sulfide resins are used. This was a major limitation in considering the application of. As a means to solve these problems, it has been studied to add a thermoplastic polyester represented by polybutylene terephthalate and polyethylene terephthalate to polyphenylene sulfide resin, which has no or no crosslinked structure so far. A composition comprising a combination of polyphenylene sulfide resin and polyethylene terephthalate having a low degree of cross-linking (for example, Japanese Patent Publication No. 64-991), and an epoxy resin added to a combination of a polyphenylene sulfide resin and a thermoplastic polyester to improve compatibility. (See, for example, JP-A-59-5805)
No. 2) has been proposed. Further, from the viewpoint of improving the heat resistance of the thermoplastic polyester, a polyphenylene sulfide resin and α
A composition to which a copolymer of an olefin and a glycidyl ester of an α, β-unsaturated carboxylic acid is added (for example, JP-B-63-4564) has also been proposed.

However, these conventional techniques still have insufficient points, and a completely satisfactory resin composition has not yet been obtained. That is, the resin compositions disclosed in JP-B-64-991 and JP-A-59-58052 are still insufficient in impact resistance.
Since the resin composition disclosed in JP-A-64-64 is mainly composed of thermoplastic polyester, deterioration due to hydrolysis is inevitable. Furthermore, even if the technology disclosed in JP-B-63-4564 is expanded to a composition region mainly composed of polyphenylene sulfide resin to improve hydrolysis resistance, the melt viscosity of the composition is still high and gelation is not achieved. There are problems such as difficulty in molding processability, such as easy occurrence, and it has not yet been obtained that can satisfy all the required characteristics such as heat resistance, chemical resistance, hydrolysis resistance, moldability, etc. is there.

[0005]

Accordingly, the present invention is directed to a combination of polyphenylene sulfide resin and thermoplastic polyester, wherein all of heat resistance, chemical resistance, hydrolysis resistance, moldability and mechanical strength are balanced. It is an object to obtain an excellent polyphenylene sulfide resin composition.

[0006]

That is, the present invention relates to a polyphenylene sulfide resin 100 which has been deionized.
An aliphatic or alicyclic di-C 2-10
5-80 parts by weight of a thermoplastic polyester resin obtained by a condensation reaction of an all component with an aromatic dicarboxylic acid and / or an ester-forming derivative thereof, α-olefin and α,
5 to 50 parts by weight of a modified polyolefin comprising a glycidyl ester of β-unsaturated carboxylic acid , containing an epoxy group
The present invention provides a polyphenylene sulfide resin composition comprising 5 to 50 parts by weight of a thermoplastic elastomer and 0 to 200 parts by weight of an inorganic filler.

In the present invention, it is important to use a polyphenylene sulfide resin which has been subjected to a specific post-treatment, introduce a thermoplastic elastomer as a new component, and further limit the composition thereof to a specific range. As a result, a resin composition having excellent heat resistance, chemical resistance, hydrolysis resistance, moldability and mechanical strength can be obtained. The polyphenylene sulfide resin used in the present invention is represented by the structural formula (I)

[0008]

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It is a polymer containing 70 mol% or more, more preferably 90 mol% or more, of the repeating unit represented by the formula. If the above repeating unit is less than 70 mol%, heat resistance is unfavorably deteriorated.

In general, PPS is a polymer having a relatively small molecular weight obtained by a production method represented by Japanese Patent Publication No. 45-3368 and an essential polymer obtained by a production method represented by Japanese Patent Publication No. 52-12240. There is a polymer having a relatively high molecular weight in a linear form, and the polymer obtained by the method described in JP-B No. 45-3368 is heated by heating after polymerization in an oxygen atmosphere or peroxide. It is also possible to increase the degree of polymerization by adding a crosslinking agent such as the above and heating to use. In the present invention, it is possible to use PPS obtained by any method, but an essentially linear polymer having a relatively high molecular weight is more preferably used.

The PPS can comprise less than 30 mol% of the repeating unit with a repeating unit having the following structural formula.

[0012]

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It is essential that the PPS used in the present invention be produced through the above-mentioned polymerization step and then subjected to a deionization treatment by a method such as acid treatment, hot water treatment or washing with an organic solvent.

When PPS that has not been subjected to deionization is used, the compatibility when kneaded with a thermoplastic polyester, a modified polyolefin and a thermoplastic elastomer is poor, and the resulting resin composition has poor appearance and impact resistance. And a practical material cannot be obtained.

The case where the acid treatment is performed is as follows. The acid used for the acid treatment of PPS in the present invention is not particularly limited as long as it does not have an action of decomposing PPS, and examples thereof include acetic acid, hydrochloric acid, sulfuric acid, phosphoric acid, silicic acid, carbonic acid, and propyl acid. However, acetic acid and hydrochloric acid can be more preferably used, but those which decompose and degrade PPS such as nitric acid are not preferred.

The acid treatment is carried out by adding P to an acid or an aqueous acid solution.
There are methods such as immersing PS, and if necessary, stirring or heating can also be performed. For example, when acetic acid is used, a sufficient effect can be obtained by immersing the PPS powder in a pH 4 aqueous solution heated to 80 to 90 ° C. and stirring for 30 minutes. The PPS that has been subjected to the acid treatment needs to be washed several times with water or hot water in order to physically remove the remaining acid or salt.

The water used for washing is distilled water, in the sense that the effect of the preferred chemical modification of PPS by the acid treatment is not impaired.
Preferably, it is deionized water.

The case of performing the hot water treatment is as follows.

In treating the PPS used in the present invention with hot water, it is important that the temperature of the hot water be 100 ° C. or higher, more preferably 120 ° C. or higher, further preferably 150 ° C. or higher, and particularly preferably 170 ° C. or higher. And 1
If the temperature is lower than 00 ° C., the effect of the preferred chemical modification of PPS is small, which is not preferable.

The water used is preferably distilled water or deionized water in order to exhibit a preferable effect of chemically modifying PPS by the hot water treatment of the present invention. In the operation of the hot water treatment, usually, a predetermined amount of PPS is put into a predetermined amount of water,
This is performed by heating and stirring in a pressure vessel. PP
The ratio of S to water is preferably as high as possible, but a bath ratio of 200 g or less of PPS to 1 liter of water is usually selected.

Further, since the decomposition of the terminal groups is not preferred in the treatment atmosphere, it is preferable to use an inert atmosphere in order to avoid this. Further, the PPS that has been subjected to the hot water treatment operation is preferably washed several times with warm water in order to physically remove the remaining components.

The case of washing with an organic solvent is as follows.

The organic solvent used for washing PPS in the present invention is not particularly limited as long as it does not have a function of decomposing PPS. For example, N-methylpyrrolidone, dimethylformamide, dimethylacetamide, 1,3-dimethyl Imidazolidinone, hexamethylphosphoramide, nitrogen-containing polar solvents such as piperazinones, dimethyl sulfoxide, dimethyl sulfone, sulfoxide-sulfone solvents such as sulfolane, acetone, methyl ethyl ketone, ketone solvents such as diethyl ketone, acetophenone, dimethyl ether, Ether solvents such as dipropyl ether, dioxane, tetrahydrofuran, chloroform, methylene chloride, trichloroethylene, dichlorinated ethylene, perchlorethylene, monochloroethane, dichloroethane, tet Halogen-based solvents such as chloroethane, perchloreethane, and chlorobenzene; alcohol / phenol-based solvents such as methanol, ethanol, propanol, butanol, pentanol, ethylene glycol, propylene glycol, phenol, cresol, polyethylene glycol, and polypropylene glycol; and benzene; Examples thereof include aromatic hydrocarbon solvents such as toluene and xylene. Among these organic solvents, use of N-methylpyrrolidone, acetone, dimethylformamide, chloroform and the like is particularly preferred. These organic solvents are used alone or in combination of two or more.

As a method of washing with an organic solvent, there is a method of immersing PPS in an organic solvent, and the like, and if necessary, stirring or heating can also be performed.

The washing temperature for washing PPS with an organic solvent is not particularly limited, and an arbitrary temperature from ordinary temperature to about 300 ° C. can be selected. Although the cleaning efficiency tends to increase as the cleaning temperature increases, a sufficient effect is usually obtained at a cleaning temperature of normal temperature to 150 ° C.

It is also possible to wash under pressure at a temperature higher than the boiling point of the organic solvent in a pressure vessel. There is no particular limitation on the cleaning time. Although it depends on the washing conditions, in the case of batch washing, washing is usually performed for 5 minutes or more.
A sufficient effect can be obtained. It is also possible to wash in a continuous manner.

Although it is sufficient to wash the PPS produced by polymerization with an organic solvent, it is preferable to combine the washing with water or washing with warm water at 100 ° C. or lower in order to further exert the effects of the present invention. When a high-boiling water-soluble organic solvent such as N-methylpyrrolidone is used, it is preferable to wash the organic solvent and then wash it with water or warm water because the remaining organic solvent can be easily removed. The water used for these washings is preferably distilled water or deionized water.

The melt viscosity of the PPS used in the present invention is:
Although there is no particular limitation, any melt viscosity can be used. Usually, a melt viscosity of 100 to 10,000 poise at 320 ° C. and a shear rate of 10 sec ⁻¹ is used.

The thermoplastic polyester used in the present invention is an aliphatic or alicyclic diol component having 2 to 10 carbon atoms, for example, ethylene glycol, propylene glycol, 1,4-butanediol, neopentyl glycol, 5-pentanediol, 1,6-hexanediol, 2-ethylhexane-1,3-diol, cyclohexanediol, cyclohexanedimethanol, 2,
2-bis (4-hydroxyphenyl) propane and long-chain glycols having a molecular weight of 400 to 6,000, such as polyethylene glycol, polypropylene glycol, polytetramethylene glycol, and terephthalic acid, isophthalic acid, orthophthalic acid, naphthalenedicarboxylic acid, Benzoic acid, bis (p-carboxyphenyl) methane, 4,4′-diphenyletherdicarboxylic acid,
A homopolymer or a copolymer obtained by a condensation reaction with an aromatic dicarboxylic acid such as 4,4'-diphenoxyethanedicarboxylic acid and / or an ester-forming derivative thereof, and each can be used alone or in a mixture.

In addition, a small amount of an aliphatic dicarboxylic acid such as adipic acid, sebacic acid, azelaic acid or dodecane diacid can be introduced into these semi-aromatic polyesters as long as their properties are not impaired. .

Particularly useful polyesters in the present invention are polyethylene terephthalate, polybutylene terephthalate,
Polycyclohexylene dimethylene terephthalate. The degree of polymerization of the polyester used here is 0.5% concentration in an ortho-chlorophenol solvent at 25 ° C.
Is preferably 1.2 or more.

The α-olefin used in the present invention and α,
The α-olefin in the modified polyolefin comprising a glycidyl ester of β-unsaturated carboxylic acid is specifically ethylene, propylene, 1-butene, 1-pentene,
Preferred is ethylene, such as 1-hexene. The glycidyl ester of α, β-unsaturated carboxylic acid is represented by the following structural formula

[0033]

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(Wherein R represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms), and specific examples thereof include glycidyl acrylate, glycidyl methacrylate, and glycidyl ethacrylate. Glycidyl methacrylate is preferably used. The copolymerization amount of the glycidyl ester of α, β-unsaturated carboxylic acid is 1 to 50.
%, Preferably in the range of 3 to 40% by weight. Further, the modified polyolefin of the present invention may contain other unsaturated monomers copolymerizable within a range not impairing the properties thereof, such as vinyl ethers, vinyl acetate, vinyl esters such as vinyl propionate, acrylic acid such as methyl, ethyl and propyl. Esters of methacrylic acid, acrylonitrile, styrene and the like can also be copolymerized. The thermoplastic elastomer used in the present invention is epoxy
It is a (co) polymer containing no groups and examples thereof include polyolefin-based elastomers, diene-based elastomers, acrylic-based elastomers, and polyamide-based elastomers. Specific examples of the polyolefin-based elastomer include an ethylene-propylene copolymer, an ethylene-butene copolymer, polybutene, an ethylene-propylene-diene copolymer, and an ethylene-vinyl acetate copolymer. Examples of the diene-based elastomer include styrene-butadiene copolymer, polybutadiene, butadiene-acrylonitrile copolymer, polyisoprene, butene-isoprene copolymer, styrene-butadiene-styrene copolymer, and hydrogenated products thereof.

Specific examples of the acrylic elastomer include ethylene-methyl (meth) acrylate copolymer, ethylene-ethyl (meth) acrylate copolymer, ethylene-propyl (meth) acrylate copolymer, and ethylene- ( Meta)
Olefin-acrylate copolymer such as butyl acrylate copolymer, methyl (meth) acrylate-acrylonitrile copolymer, propyl (meth) acrylate-
Acrylonitrile copolymer, (meth) acrylate-acrylonitrile copolymer such as butyl (meth) acrylate-acrylonitrile copolymer, ethylene- (meth) acrylic acid copolymer and Na, Zn, K,
Metal salts such as Ca and Mg, and the above-mentioned butadiene-acrylonitrile copolymer are exemplified.

The polyamide-based elastomer is an elastomer of a block copolymer having a hard segment of a polyamide component and a soft segment of a polyether component and / or a polyester component. Examples of polyamide components include

[0037]

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(Wherein R ^I , R ^II and R ^III represent an alkylene group having 2 to 15 carbon atoms or a substituted product thereof). Examples of polyether components

[0039]

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(R represents an alkylene group having 2 to 15 carbon atoms or a substituted product thereof). Examples of the polyester component include

[0041]

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(Wherein, R ^I , R ^II and R ^III represent an alkylene group having 2 to 15 carbon atoms or a substituted product thereof). The polyamide-based elastomer also includes a random copolymer of nylon 6, nylon 66, nylon 610, nylon 11, and nylon 12.

In the present invention, in order to obtain a composition excellent in various properties such as heat resistance, chemical resistance, hydrolysis resistance, impact resistance, moldability, economy and the like, the above four components are blended in a specific ratio. It is important to do so, and if it is out of this range, the characteristic balance will be degraded. For example, the blending amount of the thermoplastic polyester is 5 to 80 parts by weight, preferably 10 to 70 parts by weight with respect to 100 parts by weight of the polyphenylene sulfide resin. Conversely, if the amount is more than this, hydrolysis resistance is significantly reduced, which is not preferable. The compounding amount of the modified polyolefin is 5 to 50 parts by weight. If the compounding amount is less than this, the impact resistance decreases, and if the compounding amount exceeds this range, the heat resistance and moldability decrease, which is not preferable. The amount of the thermoplastic elastomer is 5 to 50 parts by weight. If the amount is less than this range, the moldability, especially the fluidity, becomes insufficient, and if it exceeds this range, the heat resistance is unfavorably deteriorated.

In the present invention, the fibrous and / or granular reinforcing agent is not an essential component. However, if necessary, it can be blended in an amount not exceeding 200 parts by weight with respect to 100 parts by weight of the polyphenylene sulfide resin. Yes, usually by blending in the range of 10 to 150 parts by weight strength,
It is possible to improve rigidity, heat resistance, dimensional stability, and the like.

Examples of such a fibrous reinforcing agent include glass fiber, shirasu glass fiber, alumina fiber, silicon carbide fiber,
Examples include ceramic fiber, asbestos fiber, stone fiber, metal fiber, carbon fiber and the like.

Examples of the granular reinforcing agent include silicates such as walasteinite, sericite, kaolin, mica, clay, bentonite, asbestos, talc, alumina silicate, alumina, silicon chloride, magnesium oxide, zirconium oxide, and titanium oxide. Metal oxides, calcium carbonate, magnesium carbonate, carbonates such as dolomite,
Sulfates such as calcium sulfate and barium sulfate, glass and
Examples include beads, boron nitride, silicon carbide and silica, which may be hollow. These enhancers are 2
More than one kind can be used in combination, and if necessary, can be used after being pretreated with a coupling agent such as a silane-based or titanium-based coupling agent.

The resin composition comprising the polyphenylene sulfide resin, the thermoplastic polyester, the modified polyolefin and the thermoplastic elastomer used in the present invention contains an antioxidant, a heat stabilizer and a heat stabilizer as long as the effects of the present invention are not impaired.
Lubricants, crystal nucleating agents, UV inhibitors, colorants, flame retardants and other usual additives and small amounts of other polymers can be added.In addition, for the purpose of controlling the degree of crosslinking of polyphenylene sulfide resin, Peroxidants and JP-A-59-
A crosslinking accelerator such as metal thiophosphinate described in JP-A-131650 or JP-A-58-20404.
No. 5, JP-A-58-204046, and the like, and a crosslinking inhibitor such as dialkyltin dicarboxylate and aminotriazole can also be blended.

The method for preparing the resin composition used in the present invention is not particularly limited, and a polyphenylene sulfide resin, a thermoplastic polyester, a modified polyolefin, a powder of a thermoplastic elastomer, pellet flakes and, if necessary, a reinforcing agent, a ribbon blender, After dry-blending using a Henschel mixer, a V-blender or the like, a method of melt-kneading using a Banbury mixer, a mixing roll, a single-screw or twin-screw extruder, a kneader, or the like can be given. Above all, a typical method is melt kneading using a single-screw or twin-screw extruder having a sufficient kneading force.

[0049]

The present invention will be described in more detail with reference to the following examples. The properties described in the examples and comparative examples were measured by the following methods.

Tensile strength: ASTM D638 Flexural strength / elastic modulus: ASTM D790 Izod impact strength: ASTM D256 Thermal deformation temperature: ASTM D570 Hydrolysis resistance: Tensile test pieces were tested at 121 ° C. using a PCT (pressure cooker test) apparatus. 100% RH /
The tensile strength retention after 72 hours of treatment was measured and used as a measure of hydrolysis resistance.

Reference Example 1 (Polymerization of PPS) 3.26 kg of sodium sulfide (25 mol, water of crystallization 40%) was added to an autoclave.
), Sodium hydroxide 4 g, sodium acetate trihydrate 1.36 kg (about 10 mol) and N-methyl-2-
7.9 kg of pyrrolidone (hereinafter abbreviated as NMP) was charged, and the temperature was gradually raised to 205 ° C. with stirring, and 1.3 g of water was added.
About 1.5 l of distillate containing 6 kg was removed. 3.75 kg (25.5 mol) of 1,4-dichlorobenzene was added to the residual mixture.
And 2 kg of NMP, and the mixture was heated at 265 ° C. for 3 hours.
The reaction product is washed 5 times with 70 ° C. hot water,
After drying under reduced pressure for a time, a melt viscosity of about 1500 poise (320
° C., powdery PPS shear rate of 10 sec ^-1) (P-1) to about 2
Kg was obtained.

The same operation was repeated and used in the examples described below.

Reference Example 2 (Acid treatment of PPS) About 2 kg of the PPS powder obtained in Reference Example 1 was heated at 90 ° C. to pH 4
And stirred for about 30 minutes, filtered, washed with deionized water at about 90 ° C. until the pH of the filtrate became 7, and dried under reduced pressure at 120 ° C. for 24 hours to obtain a powder. To obtain an acid-treated PPS (P-2).

Reference Example 3 (Hot water treatment of PPS) About 2 kg of the PPS powder obtained in Reference Example 1 and 10 l of deionized water were charged into an autoclave, sealed at normal pressure, heated to 175 ° C., and stirred. While keeping the temperature for about 30 minutes, it was cooled. The contents were taken out and filtered, and the operation of immersing, stirring, and filtering PPS in about 10 l of deionized water at 70 ° C. was repeated five times. Thereafter, the resultant was dried under reduced pressure at 120 ° C. for 24 hours to obtain hot water washed PPS (P-3).

Reference Example 4 (PPS solvent washing) About 2 kg of the powder obtained in Reference Example 1 was heated to 100 ° C. in 20 l of NMP.
The mixture was stirred for about 30 minutes, filtered, and then washed with ion-exchanged water at about 90 ° C. This is 120 ° C
And dried under reduced pressure for 24 hours to obtain NMP washed PPS (P-4).

Example 1 Acid-treated PPS (PPS-2) 100 obtained in Reference Example 2
Parts by weight, 50 parts by weight of polyethylene terephthalate resin having a relative viscosity of 2.1, ethylene / glycidyl methacrylate =
25 parts by weight of an 88/12 (wt%) copolymer and an ethylene / propylene copolymer ("Tuffma" manufactured by Mitsui Petrochemical Co., Ltd.)
P0180) 25 parts by weight were dry-blended using a Henschel mixer, and then melt-kneaded at a cylinder temperature of 300 ° C. using a co-rotating twin-screw extruder having a diameter of 30 mm and L / D = 30. And pelletized. The pellets obtained here are placed in a gear oven 1
After drying at 30 ° C./5 h, injection molding was performed at a resin temperature of 300.
C. and a mold temperature of 150 ° C. to obtain various test pieces having good appearance. Table 1 shows various properties measured using these test pieces. It was found that the composition obtained here had good heat resistance, impact resistance and hydrolysis resistance.

[0057]

[Table 1]

Comparative Example 1 Kneading, drying and injection molding were carried out in exactly the same manner as in Example 1 except that the PPS-1 obtained in Reference Example 1 was used as the PPS. As shown, this one had insufficient impact resistance.

Comparative Example 2 The mixing ratio of PPS and polyethylene terephthalate was 5
Except that the amount was changed to 0 parts by weight and 100 parts by weight, the kneading and molding of the four components were performed in the same procedure as in Example 1, and subsequently the physical properties were measured. The results are as shown in Table 1, and the composition obtained here was poor in hydrolysis resistance.

Comparative Example 3 Kneading was carried out in the same manner as in Example 1 except that the ethylene / propylene copolymer was not used and the blending amount of ethylene / glycidyl methacrylate was 50 parts by weight. An attempt was made to injection-mold the pellets obtained here, but the flowability was extremely low. Under these conditions, poor filling of the molded product occurred, and a good molded product could not be obtained.

Comparative Example 4 Without using an ethylene / glycidyl methacrylate copolymer,
Table 1 summarizes the results of kneading, injection molding, and measurement of physical properties in the same procedures as in Example 1 except that the amount of the ethylene / propylene copolymer was changed to 50 parts by weight. The composition obtained here was insufficient in impact resistance.

Examples 2 to 6 Kneading and injection molding were carried out in the same procedure as in Example 1 except that the types and amounts of PPS, thermoplastic polyester, thermoplastic elastomer and modified polyolefin were changed as shown in Table 2. A molded article having good appearance was also obtained. Various physical properties of the molded article obtained here are as shown in Table 3, and it was found that all of the molded articles were good in property balance and high in practical value.

[0063]

[Table 2]

[0064]

[Table 3]

Example 7 The hydrothermally treated PPS (PPS-3) 10 obtained in Reference Example 3
0 parts by weight, 50 parts by weight of polyethylene terephthalate having a relative viscosity of 2.5, 15 parts by weight of the ethylene / glycidyl methacrylate copolymer used in Example 1, ethylene / butene-
1 copolymer (“TAHMA” A4085 manufactured by Mitsui Petrochemical Co., Ltd.)
After dry blending 35 parts by weight and 50 parts by weight of glass fiber, the mixture was melt-kneaded using a single-screw extruder having a diameter of 40 mm and L / D = 30 at a cylinder temperature of 310 ° C. and 80 rpm, and pelletized. After drying the pellets at 140 ° C. for 3 hours in a gear oven, injection molding was performed using an injection molding machine at a resin temperature of 315 ° C. and a mold temperature of 150 ° C.
Various molded products were obtained. As shown in Table 5, the properties of these molded products were found to be excellent in heat resistance, strength, and hydrolysis resistance and high in practical value.

Examples 8 to 11 Table 4 shows the types and mixing ratios of PPS resin, thermoplastic polyester, modified polyolefin, elastomer and inorganic reinforcing material.
And kneading and injection molding were carried out in the same manner as in Example 7 to obtain molded articles having good moldability and appearance.
These properties are as shown in Table 5, and it was found that the material was good in heat resistance, strength, and hydrolysis resistance and high in practical value.

[0067]

[Table 4]

[0068]

[Table 5]

[0069]

As described above, polyphenylene sulfide resin, thermoplastic polyester resin,
By combining a modified polyolefin having a specific structure and a thermoplastic elastomer at a specific compounding ratio, a resin composition having a good balance of heat resistance, impact resistance, hydrolysis resistance, and moldability was obtained. The resin composition of the present invention,
Injection molding, press molding, it is possible to mold by using a conventional melt molding method such as extrusion molding, the resulting molded article, connectors, coil bobbins, various switches, socket
, Relay, condenser top case, fuse holder
Da, contact breaker, motor parts (brush holder
, Insulators, spacers, casings, etc.),
VTR parts, CD parts, microwave parts, IC parts, etc.
Electrical and electronic parts, alternator parts, ignition
Parts, carburetor parts, wire harness, wire harness
Ness cover, exhaust gas treatment equipment parts, bras for various motors
Flush holder, various sensor parts, lamp reflector,
Automotive parts such as lamp holders and lamp sockets,
Housings and internal parts such as pumps, valves and flow meters,
Compressor parts, spray nozzles, pipe brackets
Parts, heat insulation boards, mechanical parts such as level gauge parts,
Parts, clock parts, tachometer parts, FDD parts, copying
Precision equipment such as machine parts, optical equipment parts, and computer parts
It can be used for mechanical parts .

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-1-213359 (JP, A) JP-A-1-190752 (JP, A) JP-A-62-223232 (JP, A) JP-A-57- 108136 (JP, A) JP-A-55-156342 (JP, A) JP-A-57-108135 (JP, A) JP-A-3-236931 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) C08L 81/00-81/10 CA (STN) REGISTRY (STN)

Claims (2)

(57) [Claims] 1. A polyphenylene sulfide resin having been subjected to a deionization treatment, 100 parts by weight of which has 2 to 10 carbon atoms.
By a condensation reaction between an aliphatic or alicyclic diol component and an aromatic dicarboxylic acid and / or an ester-forming derivative thereof .
5-80 parts by weight of the obtained thermoplastic polyester resin,
5 to 50 parts by weight of a modified polyolefin comprising a glycidyl ester of an α-olefin and an α, β-unsaturated carboxylic acid, 5 to 5 parts of a thermoplastic elastomer containing no epoxy group
A polyphenylene sulfide resin composition comprising 0 parts by weight and 0 to 200 parts by weight of an inorganic filler. 2. The polyphenylene sulfide resin composition according to claim 1, wherein the deionization treatment is at least one method selected from an acid aqueous solution treatment, a hot water treatment, and an organic solvent washing.