JPH06329846A - Weatherable resin composition - Google Patents

Abstract

PURPOSE:To provide the subject composition excellent in the appearance of the moldings therefrom, mechanical properties, electrical properties, heat resistance, moldability and weatherability, comprising a polyphenylene ether, polyolefin resin, compatibilizing agent and titanium dioxide and/or zinc oxide each having specific mean particle diameter. CONSTITUTION:The objective composition comprising (A) 20-80 pts.wt. of a polyphenylene ether [e.g. poly(2,6-dimethyl-1,4-phenylene) ether], (B) 20-80 pts.wt. of a polyolefin resin (e.g. polypropylene resin), (C) 0.1-20 pts.wt. of a compatibilizing agent (e.g. maleic anhydride) and (D) a total of 0.1-20 pts.wt. of titanium dioxide in the form of fine particles <=0.06mu in mean particle diameter and/or zinc oxide in the form of fine particles <=0.06mu in mean particle diameter. This composition, which has the above advantages, also causes little discoloration of the surface of the molding therefrom when exposed to sunlight or fluorescent lamps, etc., over a long period of time, thus being useful in the areas of e.g. electrical and electronic parts, automotive parts, mechanical parts, miscellaneous goods.

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY The resin composition of the present invention is used for sunlight for a long period of time without being impaired in appearance, mechanical properties, dimensional accuracy, electrical properties, heat resistance and moldability of a molded product. When exposed to sunlight through windows during indoor use, indoor fluorescent lamps, etc., the weathering resin composition does not cause discoloration or discoloration on the surface of molded products significantly and does not cause problems such as mold deposits during molding. The product can be used in a wide range of fields such as electric / electronic parts, automobile parts, machine parts, construction parts, and miscellaneous goods.

[0002]

2. Description of the Related Art Conventionally, a composition comprising polyphenylene ether (hereinafter abbreviated as PPE) and a styrene-based polymer has excellent electrical properties, mechanical properties, heat resistance, hot water resistance, dimensional accuracy, moldability and the like. , Electric / electronic parts, automobile parts, machine parts, building parts, sundries, etc. However, a composition containing PPE and a styrene-based polymer as the main components is inferior in solvent resistance and oil resistance, so that improvement thereof has been strongly desired. In order to improve the solvent resistance and oil resistance of PPE, a resin composition comprising PPE and a polyolefin resin has been developed. Just P
A resin composition composed of PE and a polyolefin resin has a marked discoloration on the surface of a molded article when exposed to sunlight for outdoor use, sunlight through a window for indoor use, fluorescent light in a room, etc. for a long time. Causing big problems,
Very limited use. Therefore, it has been strongly desired to prevent discoloration and fading of the surface of a molded article from a composition containing PPE and a polyolefin resin as main components when exposed to such various kinds of light.

To improve the weather resistance of PPE resin compositions, an ultraviolet absorber and a light stabilizer are usually used in combination. For example, in JP-A-60-168756, the addition of orthohydroxy-substituted alkoxybenzophenones and tetraalkyldipipedinyl aliphatic diesters to PPE can prevent the occurrence of discoloration or fading on the surface of a molded article. It is disclosed. However, when an organic low molecular weight compound such as orthohydroxy-substituted alkoxybenzophenones or tetraalkyldipipedinyl aliphatic diesters is added to PPE, the organic low molecular weight compound is volatilized during melt kneading or molding, resulting in The effect of fading is reduced, the appearance of the organic low molecular weight compound adheres to the surface of the molded product, and the gas vent of the mold is clogged. It was difficult to continuously mold the resin, and the problem of discoloration and fading could not be completely solved. Special table Sho 57-50206
In the second report, it is described that when titanium oxide having a particle size of about 0.1 to 0.2 μm and an impact modifier are added to PPE, weather resistance and impact resistance are improved. Even with this method, the impact resistance was certainly improved to some extent, but the degree of improvement in weather resistance was very low.

[0004]

SUMMARY OF THE INVENTION The problems to be solved by the present invention are as follows:
When exposed to sunlight through windows during indoor use, indoor fluorescent lights, etc., the discoloration and fading of the surface of the molded product is extremely small, and the molded product's appearance, mechanical properties, and heat resistance are excellent. (EN) It is intended to provide a weather resistant resin composition which is free from clogging of a gas vent of a mold and from sticking to a protruding pin or the like.

[0005]

In order to solve the above problems, the present inventor has conducted various studies by adding various third substances to PPE and polyolefin resins at various ratios. As a result, it has been found that a resin composition obtained by blending a fine particle titanium oxide and / or a fine particle zinc oxide having an average particle diameter of 0.06 μm or less with a composition comprising PPE and a polyolefin resin and melt-kneading satisfies the purpose. Completed the invention.

That is, the present invention comprises (A) 20 to 80 parts by weight of polyphenylene ether, (B) 20 to 80 parts by weight of a polyolefin resin, (C) 0.1 to 20 parts by weight of a compatibilizing agent, and (D) an average. Fine particle titanium oxide having a particle size of 0.06 μm or less and / or an average particle size of 0.06 μm
It is a resin composition comprising 0.1 to 20 parts by weight in total of the following fine particle zinc oxide.

The 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-
A 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 E. The intrinsic viscosity of PPE suitable for the present invention is 0.20 when measured with a chloroform solution at 25 ° C.
It is preferably in the range of 0.60 dl / g. If the intrinsic viscosity is higher than 0.60 dl / g, the melt viscosity of the composition will be high, and the bar flow value will be low, making it particularly difficult to mold a large-sized thin-walled molded product. 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 polyolefin resin used in the present invention is one homopolymer or plural random or block copolymers selected from olefins such as α-olefins and cyclic olefins, or α-olefins and It is a random or block copolymer of one or more kinds selected from olefins such as cyclic olefins and an unsaturated organic acid or its derivative. As the α-olefin, ethylene, propylene, butene-1, pentene-
1, hexene-1, 3-methylbutene-1, 4-methylpentene-1, octene-1, decene-1, dodecene-
1, tetradecene-1, hexadecene-1, octadecene-1, and eicosene-1 are cyclic olefins.
Cyclopentene and cyclohexene are examples of unsaturated organic acids or their derivatives such as maleic acid, chloromaleic acid, citraconic acid, and itaconic acid.
An unsaturated dicarboxylic acid, acrylic acid, crotonic acid, vinyl acetic acid, methacrylic acid, pentenoic acid, unsaturated monocarboxylic acid exemplified by angelic acid, glycidyl maleate, glycidyl acrylate, α exemplified by glycidyl methacrylate, etc. , Β-unsaturated dicarboxylic acids or unsaturated monocarboxylic acids and condensed esterification products of epichlorhydrin can be mentioned.

The compatibilizer used in the present invention is a carboxyl group, an acid anhydride group, a carboxylic acid ester group,
It is a compound containing at least one amino group, imino group, epoxy group, amide group, imide group, mercapto group, isocyanate group, hydroxyl group or oxazoline ring, and a polymer containing these functional groups. Particularly preferred compounds are maleic anhydride, maleic acid, fumaric acid, maleimide, maleic hydrazide, methyl nadic acid anhydride, dichloromaleic anhydride, maleic acid amide, acrylic acid, butenoic acid, crotonic acid, vinyl acetic acid, methacrylic acid. , Pentenoic acid, angelic acid, tibric acid, 2-
Unsaturated carboxylic acids such as pentenoic acid, α-ethylacrylic acid, β-methylcrotonic acid, eicosenoic acid, dodecocenoic acid, erucic acid, citraconic acid and itaconic acid, or polymers of these unsaturated carboxylic acids, malic acid and citric acid. There are saturated carboxylic acids such as acids, esters of these unsaturated or saturated carboxylic acids, acid amides, anhydrides. Further, unsaturated oxazolines, isocyanates such as toluene diisocyanate and methylene diphenyl diisocyanate, epoxy resins and precursors thereof can also be used as compatibilizers.

The average particle size used in the present invention is 0.06.
Titanium Industry Co., Ltd.
STT-30, STT-30D, STT-65C, Nippon Aerosil Co., Ltd. P25, Ishihara Sangyo Co., Ltd. TTO
-51 series, TTO-55 series, etc. are UF-ZNO manufactured by Mitsui Mining & Smelting Co., Ltd.
FINEX-25, 50, 75 and the like manufactured by Sakai Chemical Industry Co., Ltd. are preferably used. The fine particle titanium oxide and fine particle zinc oxide used in the present invention have an average particle diameter of 0.06 μm.
m or less, preferably 0.05 to 0.005 μm. If the particle size exceeds 0.06 μm, the effect of improving weather resistance is significantly reduced.

Next, the compounding ratio of the resin composition of the present invention is
(A) 20 to 80 parts by weight of PPE, (B) 20 to 80 parts by weight of polyolefin resin, (C) 0.1 to 20 parts by weight of compatibilizer, (D) fine titanium oxide having an average particle size of 0.06 μm or less, and The total amount of fine particles of zinc oxide having an average particle diameter of 0.06 μm or less is 0.1 to 20 parts by weight, preferably 30 to 70 parts by weight of (A) PPE, 25 to 70 parts by weight of (B) polyolefin resin, and (C). ) Compatibilizer 0.2
-10 parts by weight, (D) fine titanium oxide particles having an average particle diameter of 0.06 μm or less and / or an average particle diameter of 0.06
It is 0.2 to 15 parts by weight in total of fine particles of zinc oxide having a particle size of not more than μm. When PPE is lower than 20 parts by weight, heat resistance and mechanical strength are low, and when it exceeds 80 parts by weight, melt viscosity becomes high and molding becomes difficult. If the amount of the polyolefin resin is less than 20 parts by weight, the effect of improving melt viscosity, solvent resistance and oil resistance will be low, and if it exceeds 80 parts by weight, the mechanical properties and thermal properties inherent to the PPE composition will be impaired. If the addition ratio of the particulate titanium oxide and / or the particulate zinc oxide is lower than 0.1 parts by weight, the effect of improving the weather resistance is small, and if it is higher than 20 parts by weight, the retention heat stability and mechanical properties are deteriorated undesirably.

In order to further improve the weather resistance of the weather resistant resin composition of the present invention, known ultraviolet absorbers and light stabilizers may be added. That is, salicylic acid-based UV absorbers, benzophenone-based UV absorbers, benzotriazole-based UV absorbers, cyanoacrylate-based UV absorbers, hindered amine-based light stabilizers and the like are preferably used.

In order to improve the impact resistance of the weather resistant resin composition of the present invention, MBS, SBR, styrene / butadiene block copolymer, hydrogenated styrene / butadiene block copolymer, hydrogenated SEBS elastomer (Shell Chemical Co., Ltd. (Trade name: Clayton G), core / shell type elastomer with core layer made of rubber and shell layer made of hard resin (Tafloy, trade name, manufactured by Takeda Pharmaceutical Co., Ltd.), MBS elastomer, Kureha BTA elastomer, polystyrene One or more rubbery polymers selected from diblock or triblock copolymers (made by Kuraray Co., Ltd., trade name Septon) or the like composed of a phase and a hydrogenated polyisoprene phase may be blended.

Other thermoplastic resins, such as PS, HIPS, MS, AS, A, within the range not impairing the object of the present invention.
AS, AES, AMBS, styrene-maleic acid copolymer resin (trade name, Dailark manufactured by Arco Chemical Company, USA), PC, POM, PMMA, various aliphatic nylons and aromatic nylons, polyphenylene sulfide, polyether ether ketone, polysulfone Can be added.

The resin composition of the present invention has mechanical strength, rigidity,
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 fillers 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 use fibers having a small diameter as the filler. As a fiber having a small diameter, a glass fiber E-FMW- manufactured by Nippon Inorganic Co., Ltd.
800 (average fiber diameter 0.8 μm) and E-FMW-170
0 (average fiber diameter of 0.6 μm) can be exemplified.

The surface of the filler is a known surface treatment agent,
For example, vinylalkylsilane, methacryloalkylsilane, epoxyalkylsilane, aminoalkylsilane,
The surface treatment is preferably performed with a titanate coupling agent such as mercaptoalkylsilane, chloroalkylsilane, isopropyltriisostearoyl titanate, or a zircoaluminate coupling agent. Further, the fibers may be bundled with a known epoxy-based, urethane-based, polyester-based, styrene-based sizing agent or the like for use.

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, if necessary,
Known phenol-based, phosphite-based, thioether-based, hindered phenol-based, zinc sulfide, zinc oxide and other heat stabilizers and antioxidants can be used.
Further, if necessary, an antistatic agent, a plasticizer, a lubricant, a release agent, a dye, a pigment 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 may be collectively mixed, then melt-kneaded using a uniaxial or biaxial extruder and extruded to produce the resin composition of the present invention. Alternatively, the polyolefin resin and the fine particle titanium oxide and / or the fine particle zinc oxide are sufficiently melt-kneaded in a mill, and the kneaded product taken out is cooled to room temperature, further immersed in liquid nitrogen, and cooled to a size of 3 to 5 mm. Master pellets obtained by crushing, or styrene polymer and fine particle titanium oxide and / or fine particle zinc oxide are sufficiently melt-kneaded with a pressure kneader to disperse titanium and / or zinc oxide to an average particle diameter of 0.06 μm or less. The pellets are pelletized with an extruder or crushed by cooling and mixed with master pellets obtained by mixing with other resin components such as PPE, PP and maleic acid-modified PP, and further uniaxial or biaxial. The resin composition of the present invention may be produced by melt-kneading using an extruder and extruding.

The resin composition of the present invention is
Molding by extrusion molding or blow molding is also possible.

EXAMPLES Next, the present invention will be described in detail with reference to Examples and Comparative Examples, but the present invention is not limited thereto. The molding method and test method of the test piece in the examples and comparative examples are as follows.

(1) Raw materials used PPE was manufactured by Mitsubishi Gas Chemical Co., Inc. and had an intrinsic viscosity in chloroform at 25 ° C. of 0.45 dl / g. Polyolefin resin manufactured by Sumitomo Chemical Co., Ltd. as polyolefin resin, trade name Nobrene D501 (hereinafter abbreviated as PP), and styrene-ethylene-butylene-styrene block manufactured by Shell Chemical Co., Ltd. under trade name Kraton G1651 as impact modifier. A copolymer (abbreviated as SEBS) was used. The fine particle titanium oxide used is P25 (average particle size 0.02) manufactured by Nippon Aerosil Co., Ltd.
The titanium oxide used for comparison is trade name A220 manufactured by Ishihara Sangyo Co., Ltd. (average particle size 0.20 μm, hereinafter abbreviated as A220). The fine particle zinc oxide used is the product name FINEX manufactured by Sakai Chemical Industry Co., Ltd.
-50 (average particle diameter 0.02 μm, hereinafter abbreviated as X50)
The zinc oxide used for comparison is SF-15 (average particle diameter 0.18 μm, hereinafter referred to as SF-15, manufactured by Sakai Chemical Industry Co., Ltd.).
15). A zircoaluminate coupling agent, product number A, manufactured by Kusumoto Kasei Co., Ltd. was used as a surface treatment agent for the fine particle titanium oxide and / or the fine particle zinc oxide. As the phosphite-based heat stabilizer, P-EPQ, trade name of Sand Co. was used. 2- (2'hydroxy-5'-methylphenyl) benzotriazole (abbreviated as BTA) is used as a benzotriazole-based UV absorber, and bis (1,2,2,6,) is used as a hindered amine light stabilizer.
6-pentamethyl-4-piperidyl) oxalate (H
(Abbreviated as ALS) was used.

(2) Surface Treatment Method of Titanium Oxide and / or Zinc Oxide 100 parts by weight of fine particle titanium oxide P25 is put into a super mixer, 30 parts by weight of water and 2 parts of methanol with stirring.
A mixed solution of 70 parts by weight and 8 parts by weight of the zircoaluminate coupling agent / product number A was added dropwise over 10 minutes. After completion of dropping, the mixture was stirred for 10 minutes. Particulate titanium oxide obtained by spreading wet P25, drying it at room temperature for 48 hours, and further drying it at 100 to 110 ° C. for 1 hour is called P25T. Titanium oxide (A220) and zinc oxide (X50, SF15), which have been surface-treated under the same conditions, are respectively A220T and X.
Called 50T and SF15T.

(3) Method for Producing Master Pellet of Titanium Oxide or Zinc Oxide (a1) Method for Producing Composition a1 In a Labo Plastomill manufactured by Toyo Seiki Co., Ltd. set at 220 to 240 ° C., 8.5 parts by weight of PP and P- 0.5 parts by weight of EPQ was added, and 1 part by weight of fine particle titanium oxide P25T was added over 5 minutes while melt-kneading.
Add. After further melt-kneading for 5 minutes, it was taken out from Labo Plastomill, cooled at room temperature, then immersed and cooled in liquid nitrogen, and then crushed to a size of 3 to 5 mm with a crusher. (A2) Method for producing composition a2 To Labo Plastomill manufactured by Toyo Seiki Co., Ltd., which was set at 220 to 240 ° C., was added 8.5 parts by weight of PP and 0.5 parts by weight of P-EPQ, and while melt-kneading, 5 Add 1 part by weight of titanium oxide A220T over minutes. After further melt-kneading for 5 minutes, it was taken out from Labo Plastomill, cooled at room temperature, then immersed and cooled in liquid nitrogen, and then crushed to a size of 3 to 5 mm with a crusher.

(B1) Method for producing composition b1 220 to 24
To Labo Plastomill manufactured by Toyo Seiki Co., Ltd.
7.5 parts by weight of PP and 0.5 parts by weight of P-EPQ were added, and 2 parts by weight of zinc oxide X was added over 5 minutes while melt-kneading.
Add 50T. After further melt-kneading for 5 minutes, it was taken out from Labo Plastomill, cooled at room temperature, then immersed and cooled in liquid nitrogen, and then crushed to a size of 3 to 5 mm with a crusher. (B2) Production method of composition b2 To Laboplast mill manufactured by Toyo Seiki Co., Ltd., which was set at 220 to 240 ° C., was added 7.5 parts by weight of PP and 0.5 parts by weight of P-EPQ, and the mixture was melt-kneaded to give 5 Add 2 parts by weight of zinc oxide SF15T over minutes. After further melt-kneading for 5 minutes, it was taken out from Labo Plastomill, cooled at room temperature, then immersed and cooled in liquid nitrogen, and then crushed to a size of 3 to 5 mm with a crusher.

(4) Maleic acid modification method of PPE 80 parts by weight of PPE, 19 parts by weight of SEBS, and 1 part by weight of maleic anhydride were mixed with a super mixer for 10 minutes, and then a twin screw extruder having a screw diameter of 30 mm at a cylinder set temperature of 270 ° C. Was melt-kneaded to produce pellets. This pellet is called MPPE. (5) Maleic acid modification method of PP 99 parts by weight of PP, 0.6 parts by weight of maleic anhydride, and 0.2 parts by weight of dicumyl peroxide were mixed for 10 minutes with a super mixer, and further Irganox was used as an antioxidant. 0.210 parts by weight of 1010, 0.1 parts by weight of P-EPQ and 0.1 parts by weight of calcium stearate were added and mixed for 5 minutes with a super mixer. This mixture was melt-kneaded at a cylinder setting temperature of 240 ° C. with a twin-screw extruder having a screw diameter of 30 mm to produce pellets. This pellet is called MPP.

(6) Method of molding test piece After mixing the respective components in a predetermined mixing ratio, the cylinder set temperature 2
Melt kneading was performed at 70 ° C. with a twin-screw extruder having a screw diameter of 30 mm to produce pellets. This pellet at 100 ℃
After drying for 5 hours, the mold temperature is 70 ° C and the cylinder temperature is 25 with an SG125 injection molding machine manufactured by Sumitomo Heavy Industries Ltd.
0-290 ° C., injection pressure 98 MPa, ASTM-D6
38 standard type 1 3.2 mm thick tensile test piece, and 63.
A 5 × 12.7 × 3.2 mm Izod impact test piece
100 shot molding was performed, and the presence or absence of adhesion of the weather resistance improver to the ejection pin of the mold was examined, 1 without adhesion, 2 with slight adhesion, 3 with slight adhesion, 3 The case where there was a large amount of adhered matter was 4, and the case where the amount of adhered matter was extremely large was 5.

(7) Method of measuring elongation at break According to ASTM-D638, 5 tests were carried out at a tensile speed of 5 mm / min and a test temperature of 23 ° C., and an average break elongation (unit:%) of 5 was determined.

(8) 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.

(9) Weather resistance test method An Izod impact test piece of 63.5 × 12.7 × 3.2 mm was exposed to a 6.5 KW xenon arc type fade meter (CI-65 type manufactured by Atlas, USA). The filter was attached to a table, Pyrex glass was attached to the inner part of the filter used, and clear glass was attached to the outer part, and the treatment was carried out under the conditions of a black panel temperature of 63 ° C. and no rain spray.
The test piece after 300 hours of treatment is manufactured by Nippon Denshoku Industries Co., Ltd. Σ
The yellowing degree ΔYI was measured with a -80 type color difference meter to compare the weather resistance with each other.

Examples 1 to 7 The components shown in Table 1 were mixed and molded at respective compounding ratios (parts by weight), and the physical properties were measured. The results are shown in Table 1. Comparative Examples 1 to 7 Each component shown in Table 2 was mixed and molded at each compounding ratio (parts by weight), and the physical properties were measured. The results are shown in Table 1.

[0031]

EFFECT OF THE INVENTION The resin composition of the present invention is used for a long period of time when it is used outdoors for outdoor use, when it is used indoors for sunlight through a window,
When exposed to indoor fluorescent lamps, the discoloration of the surface of the molded product is extremely small, the molded product appearance, mechanical properties, electrical properties, heat resistance, moldability are good, A weather-resistant resin composition free from clogging of gas vents and deposits on protruding pins. The resin composition molding method of the present invention may be extrusion molding or blow molding in addition to injection molding. INDUSTRIAL APPLICABILITY The resin composition of the present invention can be used in a wide variety of applications such as electric / electronic parts, automobile parts, machine parts, parts to which various kinds of light are irradiated in the fields of sundries and the like.

[0032]

Table 1 Example No. 1 2 3 4 5 6 7 (blending ratio) MPPE 30 40 40 40 40 60 60 70 MPP 65 50 50 55 50 30 PP 30 20 Composition a1 5 10 10 10 Composition b1 5 10 10 BTA 0.2 HALS 0.2 (Physical properties) Elongation at break 35 25 23 23 46 24 21 23 IZ 140 150 150 150 170 160 140 140 ΔYI 8 8 9 6 8 7 9 Pin attachment 1 1 1 1 1 2 1 1

[0033]

Table 2 Comparative Example No. 1 2 3 4 5 6 7 (Compounding ratio) MPPE 30 40 40 40 60 60 60 70 MPP 65 50 50 55 30 30 30 20 20 Composition a2 5 10 Composition b2 5 10 BTA 0.5 1 1.5 HALS 0.5 1 1.5 (Physical properties) Elongation at break 27 21 29 29 34 24 31 23 IZ 120 130 130 160 160 160 160 180 170 ΔYI 34 29 35 39 39 27 24 20 Pin attachment 1 1 1 1 1 3 5 5

Claims (4)

[Claims] (A) Polyphenylene ether (A) 20-80
Parts by weight, (B) 20 to 80 parts by weight of a polyolefin resin,
(C) 0.1 to 20 parts by weight of a compatibilizer, and (D) fine titanium oxide particles having an average particle size of 0.06 μm or less and /
Alternatively, a resin composition comprising a total of 0.1 to 20 parts by weight of fine particle zinc oxide having an average particle diameter of 0.06 μm or less. 2. The (B) polyolefin resin is one homopolymer or a plurality of copolymers selected from the group consisting of α-olefins and olefins such as cyclic olefins, or α-olefins and cyclics. The resin composition according to claim 1, which is a copolymer of one or more kinds selected from the group consisting of olefins such as olefins and an unsaturated carboxylic acid or a derivative thereof. 3. A titanium dioxide coupling agent, a silane coupling agent, an aluminum coupling agent, wherein (D) titanium dioxide fine particles and / or zinc oxide fine particles is used.
Surface treated with zircoaluminate coupling agent, silylating agent, silanol modified silicone oil, alkoxy modified silicone oil, carboxyl modified silicone oil, epoxy modified silicone oil, amino modified silicone oil, alcohol modified silicone oil or SiH modified silicone oil. It is a thing, It is characterized by the above-mentioned.
Resin composition. 4. As (D) fine particle titanium oxide and / or fine particle zinc oxide, fine particle titanium oxide having an average particle diameter of 0.06 μm or less and / or an average particle diameter of 0.06.
3. A masterbatch obtained by adding 0.5 to 100 parts by weight of a polyolefin resin and melt-kneading to 1 part by weight of a total of zinc oxide having a particle size of .mu.m or less. Or the resin composition of 3.