JPH06313105A - Thermoplastic resin composition - Google Patents

Abstract

PURPOSE:To provide a thermosetting resin composition significantly improved especially in flowability during molding, solvent resistance, and oil resistance and having intact molding appearance, mechanical properties, electrical properties, and heat resistance. CONSTITUTION:20-80 pts.wt. poly(phenylene ether) resin is melt-kneaded together with 20-80 pts.wt. at least one resin selected from polyamides, thermoplastic polyesters, and polycarbonates, 2-30 pts.wt. impact modifier, 0.1-20 pts.wt. polymer of an unsaturated carboxylic acid having a degree of polymerization of 2 or higher, and 0-5 pts.wt. organic peroxide having a 1-hr half-life temp. of 100-270 deg.C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The resin composition of the present invention has a fluidity (hereinafter abbreviated as fluidity), a solvent resistance and an oil resistance, especially during melt molding without deteriorating the appearance, mechanical properties and heat resistance of the molded article. With respect to PPE and polyamide, thermoplastic polyester, and PC resin composition having remarkably improved properties, they can be used in a wide range of fields such as electric / electronic parts, automobile parts, machine parts, construction parts, and sundries.

[0002]

2. Description of the Related Art Conventionally, a composition comprising PPE and a styrene resin has excellent electrical properties, mechanical properties, heat resistance, hot water resistance, dimensional accuracy, moldability, etc. It is used in a wide range of fields such as parts, machine parts, and miscellaneous goods. However, a composition comprising PPE and a styrenic resin has insufficient solvent resistance and oil resistance, and therefore improvement has been strongly desired.

Japanese Patent Publication No. 60-11966 reports PPE.
And a polyamide and a relatively low molecular weight maleic anhydride, maleimide, fumaric acid or the like as a compatibilizing agent are melt-kneaded to improve the solvent resistance and oil resistance of PPE. However, in this method, maleic anhydride, maleimide, part of fumaric acid is volatilized during melt kneading, and not only the effect as a compatibilizer is reduced,
There is a problem of polluting the work environment. Japanese Patent Laid-Open No. 2-7
No. 0748 discloses a method of melt-kneading PPE, a thermoplastic polyester and an impact resistant reinforcing material in the presence of a peroxide and / or an azo compound having a carboxyl group and / or an amino group. However, the resin composition obtained by this method is insufficient in terms of solvent resistance, impact resistance and appearance.

[0004]

The problems to be solved by the present invention include the appearance of molded articles, mechanical properties, electrical properties,
It is intended to provide a resin composition having remarkably improved fluidity, solvent resistance and oil resistance without impairing physical properties and heat resistance.

[0005]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present inventors have added various resins to one or more resins selected from (A) PPE and (B) polyamide, thermoplastic polyester, and PC. The three substances were added at various ratios, and research was repeated. As a result, when (A) PPE, (B) polyamide, thermoplastic polyester, and one or more resins selected from PC, a polymer having a degree of polymerization of 2 or more obtained by polymerizing an unsaturated carboxylic acid is added and melt-kneaded, 1 selected from (A) PPE and (B) polyamide, thermoplastic polyester resin, PC
The present invention has been completed by finding that a resin composition in which the dispersion state of one or more kinds of compositions is stable and the physical properties are remarkably improved without polluting the environment is obtained.

That is, the present invention relates to (A) PPE 20-
80 parts by weight, (B) polyamide, thermoplastic polyester, 20 to 80 parts by weight of one or more resins selected from PC, (C) 2 to 30 parts by weight of impact modifier, (D) degree of polymerization of 2 or more. 0.1 to 20 parts by weight of the polymer of unsaturated carboxylic acid of (E), the temperature for the half-life to be 1 hour is 100 to 100
It is a resin composition obtained by melt-kneading 0 to 5 parts by weight of an organic peroxide at 270 ° C.

The (A) PPE used in the present invention can be produced, for example, according to the method described in JP-A-63-286464. In particular, poly (2,6-dimethyl-1,
4-phenylene) ether, 2,6-dimethyl-1,4
-Phenol / 2,3,6-trimethyl-1,4-phenol copolymer and a graft copolymer obtained by graft-polymerizing styrene to the former two are used in the present invention.
Preferred as PE. The intrinsic viscosity of PPE suitable for the present invention is 0.20 to 0.6 when measured with a 25 ° C. chloroform solution.
It is preferably in the range of 0 dl / g. Intrinsic viscosity is 0.
When it is higher than 60 dl / g, the melt viscosity of the composition becomes high,
The bar flow value decreases, making it especially difficult to mold large-sized thin-walled molded products. On the other hand, when the intrinsic viscosity is lower than 0.20 dl / g, the mechanical strength is greatly reduced and the value as a practical molded product is impaired, so that the resin composition of the present invention cannot be used.

The (B) polyamide used in the present invention is
4-nylon, 6-nylon, 6,6-nylon, 12
-Nylon, 6,10-nylon, polyamide from terephthalic acid and trimethylhexamethylenediamine, polyamide from adipic acid and metaxylylenediamine, from adipic acid and azelaic acid and 2,2-bis (p-aminocyclohexyl) propane And polyamides from terephthalic acid and 4,4′-diaminodicyclohexylmethane. As the thermoplastic polyester (B) that can be used in the present invention, aliphatic polyester, aromatic polyester, wholly aromatic polyester and the like are used. Specifically, a polycondensate obtained from a dicarboxylic acid or its derivative and a divalent alcohol or a divalent phenol compound; a polymer obtained from the dicarboxylic acid or its derivative and a cyclic ether compound; Examples thereof include polycondensates obtained from metal salts and dihalogen compounds; ring-opening polymers of cyclic ester compounds, and the like. The term "dicarboxylic acid derivative" as used herein means an acid anhydride, an ester, an acid halide or the like. Dicarboxylic acid is
It may be aliphatic or aromatic. Examples of aromatic dicarboxylic acids include terephthalic acid, isophthalic acid, phthalic acid, chlorophthalic acid, nitrophthalic acid, p
-Carboxylphenylacetic acid, p-phenylenediacetic acid,
m-phenylenediglycolic acid, p-phenylenediglycolic acid, diphenyldiacetic acid, diphenyl-p, p'-
Dicarboxylic acid, diphenyl ether-p, p'-dicarboxylic acid, diphenyl-m, m'-dicarboxylic acid, diphenyl-4,4'-diacetic acid, diphenylmethane-p, p '
-Dicarboxylic acid, diphenylethane-p, p'dicarboxylic acid-stilbenedicarboxylic acid, diphenylbutane-
p, p-dicarboxylic acid, benzophenone-4,4'-dicarboxylic acid, naphthalene-1,4-dicarboxylic acid, naphthalene-1,5-dicarboxylic acid, naphthalene-2,6-
Dicarboxylic acid, naphthalene-2,7-dicarboxylic acid, p
-Carboxyphenoxyacetic acid, p-carboxyphenoxybutyric acid, 1,2-diphenoxypropane-p, p-
Dicarboxylic acid, 1,3-diphenoxypropane-p,
p'-dicarboxylic acid, 1,4-diphenoxybutane-
p, p'-dicarboxylic acid, 1,5-diphenoxypentane-p, p'-dicarboxylic acid, 1,6-diphenoxyhexane-p, p'-dicarboxylic acid, p- (p-carboxyphenoxy) benzoic acid , 1,2-bis (2-methoxyphenoxy) -ethane-p, p'-dicarboxylic acid, 1,
3-bis (2-methoxyphenoxy) -propane-p,
p'-dicarboxylic acid etc. can be mentioned. Examples of the aliphatic dicarboxylic acid include oxalic acid, succinic acid, adipic acid, cork acid, mazelaic acid, sebacic acid, dodecanedicarboxylic acid, undecanedicarboxylic acid, maleic acid, fumaric acid and the like. Examples of preferred dicarboxylic acids are aromatic dicarboxylic acids, more preferably
Mention may be made of terephthalic acid, isophthalic acid and naphthalene-2,6-dicarboxylic acid.

Examples of the dihydric alcohol include ethylene glycol, propane-1,2-diol and propane-1,3.
-Diol, butane-1,3-diol, butane-1,
4-diol, 2,2-dimethylpropane-1,3-diol, cis-2-butene-1,4-diol, tr
Examples include ans-2-butene-1,4-diol, tetramethylene glycol, pentamethylene glycol, hexamethylene glycol, heptamethylene glycol, octamethylene glycol, decamethylene glycol and the like. Examples of preferred dihydric alcohols are ethylene glycol, propane-1,2-diol, propane-1,
3-diol, butane-1,3-diol, butane-
1,4-diol can be mentioned, and more preferably, ethylene glycol and butane-1,4-diol can be mentioned. As the dihydric phenol compound,
Hydroquinone, resorcin, 4,4′-dihydroxydiphenyl, bis (4-hydroxyphenyl) methane,
2,2-bis (4-hydroxyphenyl) propane,
1,1-bis (4-hydroxyphenyl) cyclohexane, bis (4-hydroxyphenyl) ether, bis (4-hydroxyphenyl) sulfone, bis (4-hydroxyphenyl) sulfide, bis (4-hydroxyphenyl) ketone, 4 -Hydroxyphenyl 3-hydroxyphenyl ketone etc. can be mentioned. Examples of the cyclic ether compound described above include ethylene oxide and propylene oxide, and examples of the cyclic ester compound include ε-caprolactone and δ-
Valerolacron can be mentioned. The dihalogen compound to be reacted with the metal salt of dicarboxylic acid means a compound obtained by substituting the hydroxyl group of the above dihydric alcohol or dihydric phenol compound with a halogen atom such as chlorine or bromine. The polyester used in the resin composition of the present invention is produced using the above-mentioned raw materials by a known method such as a transesterification method, direct dehydration condensation, and dehalogenation metal by interfacial polycondensation. Particularly preferred thermoplastic polyesters are polyethylene terephthalate (abbreviated as PET), polybutylene terephthalate (abbreviated as PBT) and modified products thereof.

The (B) PC used in the present invention is reacted with a dihydric phenol compound and phosgene in the presence of an organic solvent inert to the reaction and an aqueous alkali solution, and then, a tertiary amine or quaternary amine. An interfacial polymerization method in which a polymerization catalyst such as an ammonium salt is added for polymerization, a pyridine method in which a dihydric phenol compound is dissolved in pyridine or a mixed solution of pyridine and an inert solvent, and phosgene is introduced to directly produce PC What is obtained by the conventional PC manufacturing method is used. In the above reaction, a molecular weight modifier, a branching agent, etc. are used if necessary. The viscosity average molecular weight of PC is preferably 10,000 to 35,000. P
When the viscosity average molecular weight of C is lower than 10,000, the mechanical properties of the composition are deteriorated, and when it exceeds 35,000, the melt viscosity becomes high and molding becomes difficult, which is not preferable.

The (C) impact resistance improver used in the present invention improves the impact strength of the resin composition, and the following rubbery polymers are exemplified. That is, polybutadiene, SBR, EPDM, EVA, polyacrylic acid ester, polyisoprene, hydrogenated isoprene, acrylic elastomer, polyester / polyether coelastomer, PA represented by Pebax under the trade name of Toray Industries, Inc.
-Based elastomers, PA elastomers represented by Dainippon Ink and Chemicals, Inc., trade name Grelax A, ethylene / butene 1 copolymers, styrene / butadiene block copolymers, hydrogenated styrene / butadiene block copolymers, Ethylene / propylene copolymer, ethylene / propylene / ethylidene norbornene copolymer, thermoplastic polyester elastomer, manufactured by Shell Chemical Co., Ltd. Hydrogenated SEBS elastomer represented by Kraton G, Mitsui Petrochemical Co., Ltd. Ethylene represented by Tuffmer
α-olefin copolymers and propylene-α-olefin copolymers, ethylene methacrylic acid-based special elastomers such as those sold by Mitsui DuPont Polychemicals Co., Ltd., and the core layer represented by Takeda Yakuhin Co., Ltd.'s trade name Stafloyd is rubber. Core-shell type elastomers with high quality and a hard shell layer made of hard resin, acrylic type (reaction type) elastomers represented by Kureha Chemical Co., Ltd. under the trade name Paraloid EXL, MBS type elastomers and Kureha BTA elastomers, Mitsubishi Rayon ( A core-shell type elastomer represented by METABLENE S (trade name) manufactured by K.K. can be used. Similarly, core / shell type elastomers, such as Mitsubishi Rayon Co., Ltd. grade names S2001 and RK120, in which the core layer is made of silicone rubber and the shell layer is made of acrylic rubber or acrylic resin, can be added. Further, a diblock or triblock copolymer comprising a polystyrene phase represented by Kuraray Co., Ltd., trade name Septon, and a hydrogenated polyisoprene phase can also be used.

The unsaturated carboxylic acid polymer (D) having a degree of polymerization of 2 or more used in the present invention is a polymer obtained by polymerizing an unsaturated carboxylic acid. The unsaturated carboxylic acid constituting the polymer is acrylic acid, aconitic acid, allylmalonic acid, angelic acid, isocrotonic acid, itaconic acid, itaconic anhydride, α-ethylcrotonic acid, erucic acid, oleic acid, allyl formate, glutaconic acid. , Crotonic acid, 2-chloroacrylic acid, 3-chloroacrylic acid, 2-chlorocrotonic acid, 3-chlorocrotonic acid, chlorofumaric acid, chloromaleic acid, citraconic acid, citraconic anhydride, vinylacetic acid, 2-butyric acid, Fumaric acid, fumaric anhydride, propionic acid, bromofumaric acid, bromomaleic acid, 4-pentenoic acid, maleic acid, maleic anhydride, mesaconic acid, methacrylic acid and other unsaturated monocarboxylic acids, unsaturated, and unsaturated There are dicarboxylic acids and their anhydrides. Amides of unsaturated carboxylic acids such as maleic acid amides, maleic acid hydrazides, azides of unsaturated carboxylic acids can also be used. Particularly preferred are aliphatic unsaturated monocarboxylic acids. The polymer of the unsaturated carboxylic acid can be obtained by using a bulk polymerization method, an aqueous solution polymerization method, or a solution polymerization method which usually uses a known radical polymerization reaction. The degree of polymerization is 2 or more, preferably 2 to 50, more preferably 2 to 10.

The component (E) used in the present invention is an organic peroxide having a half-life of 1 hour at a temperature of 100 to 270 ° C. For example, di-allyl peroxydicarbonate, tertiary butyl peroxyallyl carbonate, 2,5-dimethyl-2,5-di (peroxybenzoyl) hexene-3,2,5-dimethyl-2,5-di ( Peroxybenzoyl) hexyne-3,2,5-dimethyl-2,5-di (tertiarybutylperoxy) hexene-3,2,5-dimethyl-2,5-di (tertiarybutylperoxy) hexyne- 3, tertiary butyl peroxyisopropylene carbonate, 1,1,3
3-tetramethylperhydroxybutylene-3,1,
1,3,3-Tetramethylperhydroxypentene-
4,2,2-bis (tert-butylperoxy) octene-1,2,2-bis (tert-butylperoxy) heptene-1, methyl ethyl ketone peroxide, cyclohexanone peroxide, 2,2-bis (t- Butyl peroxy) octane, 2,2-bis (t
-Butylperoxy) butane, cumene hydroperoxide, di-t-butylperoxide, dicumyl peroxide, t-butylperoxylaurate and the like are exemplified.

The compounding ratio of the resin composition of the present invention is (A)
20 to 80 parts by weight of PPE, (B) polyamide, thermoplastic polyester, one or more resins selected from PC 20 to 20
80 parts by weight, (C) impact resistance improver 2 to 30 parts by weight,
(D) Polymer of unsaturated carboxylic acid having a degree of polymerization of 2 or more 0.1
˜20 parts by weight and (E) 0 to 5 parts by weight of organic peroxide having a half-life of 1 hour of 100 to 270 ° C.

In the ratio of (A) PPE and (B) one or more resins selected from polyamide, thermoplastic polyester and PC, if PPE is lower than 20% by weight, the lowering of the deflection temperature under load becomes large, and 80% by weight. When it is higher than 0.1%, the melt viscosity is high and the solvent resistance and oil resistance are lowered, which is not preferable. If the impact resistance improver is less than 2% by weight, the impact resistance improving effect is small, and if it exceeds 30% by weight, the elastic modulus and the like decrease, which is not preferable. When the blending ratio of the polymer obtained by polymerizing an unsaturated carboxylic acid and having a degree of polymerization of 2 or more is lower than 0.1 parts by weight, one or more kinds selected from (A) PPE and (B) polyamide, thermoplastic polyester, and PC. The dispersed state of the resin composition comprising the resin is not stable, the elongation at break and the Izod impact strength are small, and conversely, when it exceeds 20 parts by weight, the mechanical properties and the retention heat stability at the time of molding are deteriorated, which is not preferable. Further, in the present invention, it is preferable to add an organic peroxide, but in that case, the addition rate of the organic peroxide is 0.1
-5 parts by weight is preferred. Addition rate of organic peroxide is 0.1
When it is lower than 5 parts by weight, the effect of improving the mechanical properties is small, and when the addition rate of the organic peroxide exceeds 5 parts by weight, the decrease in the molecular weight of the polymer becomes large, and the mechanical properties and the thermal properties are deteriorated. Absent.

Other thermoplastic resins such as PS, HIPS, MS, MBS, etc. can be used as long as they do not impair the object of the present invention.
AS, AAS, AES, AMBS, styrene-maleic acid copolymer resin represented by Dylark (trade name, manufactured by Arco Chemical Co., USA), PE, PP, maleic acid-modified P
P, POM, PMMA, polyphenylene sulfide,
Polyether ether ketone, polysulfone, etc. can be added.

The mechanical strength and rigidity of the resin composition of the present invention,
To improve dimensional stability, glass fiber, glass beads, glass flakes, glass fiber cloth, glass fiber mat,
Graphite, carbon fiber, carbon fiber cloth, carbon fiber mat, carbon black, carbon flakes, aluminum, stainless steel, metal fibers and flakes made of brass and copper, metal powder, organic fibers, acicular titanium potassium potassium, mica, talc One or more reinforcing agents selected from clay, clay, (acicular) titanium oxide, wollastonite and calcium carbonate may be added. In order to increase the rigidity and strength and further improve the appearance and smoothness of the molded product, it is preferable to make the diameter of the fiber thin. Examples of glass fibers having a small fiber diameter include E-FMW-800 (average fiber diameter 0.8 μm) and E-FMW-1700 (average fiber diameter 0.6 μm) manufactured by Nippon Inorganic Co., Ltd.

The surface of the reinforcing agent is a known surface treatment agent, for example, vinylalkylsilane, methacryloalkylsilane, epoxyalkylsilane, aminoalkylsilane,
The surface treatment may be performed with a titanate coupling agent such as mercaptoalkylsilane, chloroalkylsilane, isopropyltriisostearoyl titanate, or a zircoaluminate coupling agent. Further, as a sizing agent for fibers, a known sizing agent such as epoxy type, urethane type, polyester type, styrene type sizing agent may be used for sizing.

In the resin composition of the present invention, if necessary,
As a flame retardant, triphenyl phosphate, tricresyl phosphate, a polycondensate thereof, or a known phosphorus compound such as red phosphorus can be added. Further, a halogen compound such as decabromodiphenyl ether, brominated polystyrene, low molecular weight brominated polycarbonate, or brominated epoxy compound can be added as a flame retardant. Flame retardant aids such as antimony trioxide, antimony tetraoxide, zirconium oxide can also be used in combination with the halogen compound. In the resin composition of the present invention, known heat- and antioxidants such as phenol-based, phosphite-based, thioether-based, hindered phenol-based, zinc sulfide, and zinc oxide can be used, if necessary. Further, if necessary, an antistatic agent, a plasticizer, a lubricant, a release agent, a dye, a pigment, an ultraviolet absorber, a light stabilizer and the like can be added.

The resin composition of the present invention can be produced by the equipment and method generally used for producing a thermoplastic resin composition. For example, the components constituting the resin composition of the present invention are melt-kneaded together. Alternatively, (A) PPE
And (D) unsaturated carboxylic acid polymer and / or (E)
After the organic peroxide is melt-kneaded, the remaining components may be further added and melt-kneaded. A single-screw or twin-screw extruder can be preferably used for melt-kneading.

The resin composition of the present invention has improved flowability, solvent resistance and oil resistance without impairing the appearance, mechanical properties, electrical properties and heat resistance of molded articles, and is injection molded, extruded and blown. It can be molded and used in a wide range of fields such as electric / electronic parts, automobile parts, machine parts, construction parts, household sundries.

[0022]

EXAMPLES The present invention will be specifically described with reference to the following examples and comparative examples, but the present invention is not limited to these. The molding method and test method of the test piece in the examples and comparative examples are as follows. (1) Raw materials used PPE manufactured by Mitsubishi Gas Chemical Co., Inc. and having an intrinsic viscosity of 0.45 dl / g in chloroform at 25 ° C. was used. Amylan CM1017 manufactured by Toray Industries, Inc. is used as the polyamide, and PB manufactured by Polyplastics Co., Ltd. is used as the thermoplastic polyester.
T, product name 2002, or P manufactured by Mitsubishi Rayon Co., Ltd.
ET, trade name Dia Knight PA200 was used. PC
Was a product of Mitsubishi Gas Chemical Co., Inc. and had a viscosity average molecular weight of 20,000. SEBS Clayton G1501 manufactured by Shell Chemical Co., Ltd. was used as the impact modifier.
As the unsaturated carboxylic acid polymer, an acrylic acid polymer having an average degree of polymerization of 10 (hereinafter abbreviated as acrylic acid) or a vinyl acetic acid polymer having an average degree of polymerization of 20 (hereinafter abbreviated as vinyl acetic acid) was used.

(2) Kneading condition of composition and molding condition of test piece PPE, SEBS, acrylic acid and / or vinyl acetic acid in the amounts shown in Table 1 or 2 are set at a cylinder temperature of 2
Melt kneading was performed at 70 to 290 ° C. with a twin-screw extruder having a screw diameter of 30 mm to produce pellets. After adding and mixing the other resin components shown in Table 1 and Table 2 to the pellets, the cylinder set temperature was 270 ° C to 290 ° C, and the screw diameter was 30 m.
Melt kneading was carried out by a twin-screw extruder of m to produce pellets.
After drying the pellets at 100 ° C. for 5 hours, the mold temperature was 100 by using an SG125 injection molding machine manufactured by Sumitomo Heavy Industries, Ltd.
℃, cylinder set temperature 280 ℃, injection pressure 98 MPa
Then, a 3.2 mm thick tensile test piece of ASTM-D638 standard type 1 was molded. Under the same conditions as the tensile test piece, 63.
5 × 12.7 × 3.2 mm Izod impact test piece, 1
A load deflection temperature test piece of 27 × 12.7 × 6.35 mm was molded.

(3) Tensile Strength According to ASTM-D638, five tests were conducted at a tensile speed of 5 mm / min and a test temperature of 23 ° C., and the average tensile strength (unit: MPa) and elongation at break (unit: 5) of the five were tested. %).

(4) Izod impact strength measurement method (hereinafter referred to as I
Z is abbreviated and the unit is J / m) According to ASTM-D256, a notch of 0.25R is cut into a test piece having a test piece thickness of 3.2 mm by cutting,
Five pieces were measured at 23 ° C., and the average value of the five pieces was shown.

(5) Deflection temperature under load (abbreviated as DTUL,
(The unit is ° C.) According to ASTM-D648, 3 pieces were measured with a load of 0.45 MPa, and the average value was shown.

(6) Oil resistance test (oil resistance is abbreviated as%) The tensile test piece was placed on a metal jig having a fulcrum distance of 100 mm, and bending bending of 1.0% was made at a position of 50 mm from the fulcrum. After being dipped in white kerosene (manufactured by Mitsubishi Petroleum Co., Ltd.) at 23 ° C. for 48 hours, the breaking elongation of 5 test pieces was measured under the condition (3), and the average value of 5 pieces was shown.

Examples 1 to 7 Table 1 shows the compounding ratio (parts by weight) of each component constituting the resin composition and the measurement results. Comparative Examples 1 to 7 Table 2 shows the compounding ratio (parts by weight) of each component constituting the resin composition and the measurement result.

[0029]

INDUSTRIAL APPLICABILITY The resin composition of the present invention is improved in fluidity, solvent resistance and oil resistance without impairing the appearance, mechanical properties, electrical properties and heat resistance of a molded product, and injection molding,
Extrusion molding and blow molding are also possible, and it can be used in a wide range of fields such as electric / electronic parts, automobile parts, machine parts, construction parts, household sundries.

[0030]

Table 1 Example No. 1 2 3 4 5 6 7 (Compounding ratio) PPE 31 42 60 30 30 30 50 30 Polyamide 32 42 PBT 60 42 21 PET 50 50 20 20 30 PC 20 30 Acrylic acid 2 1 3 Vinyl acetic acid 1 1 12 SEBS 7 7 7 7 7 7 7 7 7 (Physical properties) Tensile strength 55 63 63 68 55 62 62 66 59 Break elongation 45 53 41 41 49 45 33 33 37 IZ 180 210 210 240 200 230 210 210 240 DTU L 132 129 158 136 126 139 Oil resistance 39 44 33 45 37 37 28 32

[0031]

[Table 2] Comparative Example No. 1 2 3 4 5 6 7 (blending ratio) PPE 33 42 60 30 30 50 50 20 Polyamide 32 42 PBT 60 42 21 PET 50 50 20 20 20 PC 20 30 Acrylic acid 30 SEBS 7 7 7 7 7 7 7 (Physical Properties) Tensile Strength 46 43 48 50 50 52 46 39 Elongation at Break 2 3 3 2 4 3 3 IZ 70 40 50 50 40 30 50 40 DTUL 122 119 128 111 111 119 116 76 Oil Resistance 0 0 0 0 0 0 0 0

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location C08L 67/00 LNZ 8933-4J 69/00 LPQ 9363-4J 77/00 LQV 9286-4J (72) Inventor Chitokuichi 5-6-2 Higashihachiman, Hiratsuka-shi, Kanagawa Sanryo Gas Chemical Co., Ltd. Plastics Center (72) Inventor Yuichi Kano 5-6-2, Higashihachiman, Hiratsuka-shi, Kanagawa Sanryo Gas Chemical Co., Ltd. Inside the plastic center

Claims (3)

[Claims] 1. One or more resins 20 selected from (A) 20 to 80 parts by weight of polyphenylene ether resin (hereinafter abbreviated as PPE), (B) polyamide, thermoplastic polyester, and polycarbonate resin (hereinafter abbreviated as PC) 20. ~ 80
Parts by weight, (C) impact resistance improver 2 to 30 parts by weight, (D)
Polymer of unsaturated carboxylic acid having a degree of polymerization of 2 or more 0.1 to 20
Parts by weight, (E) the temperature for the half-life to be 1 hour is 10
A resin composition obtained by melt-kneading 0 to 5 parts by weight of an organic peroxide at 0 to 270 ° C. 2. (A) PPE is (2,6-dimethyl-
1,4-phenylene) ether polymer, 2,6-dimethyl-1,4-phenol / 2,3,6-trimethyl-
One or more polymers selected from 1,4-phenol copolymers and graft copolymers obtained by graft-polymerizing styrene with these, having an intrinsic viscosity of 0.20 to 0 measured in a chloroform solution at 25 ° C. The resin composition according to claim 1, wherein the resin composition is 0.60 dl / g. 3. The resin composition according to claim 1, wherein the polymer of the unsaturated carboxylic acid (D) is a polymer of an aliphatic unsaturated mono- or dicarboxylic acid having a degree of polymerization of 2 to 50.