JPH0269564A - Flame-retardant polyamide resin composition - Google Patents

Abstract

PURPOSE:To provide a self-extinguishing flame-retardant composition having excellent heat-resistance, rigidity and impact resistance, composed of a polyamide resin, a polyphenylene ether resin and a flame-retardant and containing the polyphenylene ether resin in a state dispersed in the form of particles having specific diameter. CONSTITUTION:The objective flame-retardant resin composition is produced by melting and mixing (A) 100 pts.wt. of a resin composition composed of (A1) 40-90wt.% of a polyamide resin (preferably 6-nylon or 6,6-nylon), (A2) 5-50wt.% of a polyphenylene ether resin having a reduced viscosity of 0.15-0.7 (preferably 0.2-0.6), preferably a modified polyphenylene ether resin bonded with a carboxylic acid (anhydride) group or an epoxy group and optionally (A3) 0-30wt.% of an elastomer with (B) 5-50 pts.wt. (preferably 8-40 pts.wt.) of a flame-retardant. The component A1 forms a continuous phase and the diameter of the component A2 dispersed in said continuous phase is <=0.6mum.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides heat resistance, rigidity and ? Uses flame-retardant polyamide resin compositions with excellent fire resistance and self-extinguishing properties. More preferably, a flame retardant polyamide resin composition comprising a polyamide resin, a polyphenylene ether resin and a flame retardant, and a flame retardant polyamide resin riI composition comprising an elastomer added thereto.

[Conventional technology] Polyamide resin has excellent mechanical strength, oil resistance, abrasion resistance, heat resistance, etc., and is used as one of the typical engineering plastics, but it has problems with dimensional stability, moisture absorption, etc. There is.

On the other hand, polyphenylene ether resin has excellent WM properties, electrical properties, heat resistance, etc., and also has good dimensional stability, so it is used in a wide range of applications. The major drawbacks are poor performance, impact resistance, and FAIdI properties.

In recent years, attempts have been made to blend the two resins in order to take advantage of the characteristics of the two resins and compensate for their shortcomings, and many techniques have been disclosed so far.

For example, Japanese Patent Publication No. 45-997, Japanese Patent Publication No. 59-41
663, etc., discloses a technique in which polyphenylene ether resin and polyamide resin are simply melt-mixed, but polyphenylene ether resin and polyamide resin are inherently difficult to miscible with each other, and such a simple blend is difficult to mechanically blend. It is not possible to obtain a molded product with excellent strength.

As a technique for improving the compatibility between polyamide resin and polyphenylene ether resin, for example, Japanese Patent Publication No. 59-4166
Publication No. 3, Japanese Patent Publication No. 59-33614, Japanese Unexamined Patent Publication No. 1983
-66452 publication, JP-A-60-58463 publication,
JP-A-62-1:3 B553, JP-A-62-
Techniques such as JP-A No. 270654, JP-A-62-500456, and JP-A-63-22855 are disclosed.

In order to roughly improve the impact resistance of these materials, many techniques for incorporating elastomers have been disclosed.

For example, JP-A-61-204261, JP-A-61
-204262, JP-A-62-68850, JP-A-63-10656, and the like.

Furthermore, techniques for imparting flame retardancy to these materials have also been disclosed. Japanese Patent Application Laid-Open No. 60-58463 discloses a technique for blending organic phosphate esters, and Japanese Patent Application Laid-Open No. 61-13036
No. 8 discloses a technique for blending a specific phosphorus compound. Furthermore, JP-A-60-155259 discloses a technique for blending halogenated polystyrene, and JP-A-62-236853' discloses a technique for blending a heterocyclic compound containing a nitrogen atom such as isocyanuric acid. has been done. However, these techniques have a problem in that physical properties such as heat resistance or impact resistance of the resin deteriorate.

[Problems to be Solved by the Invention] In view of the above-mentioned problems, the present inventor has provided flame retardancy while
The present invention was completed by discovering a resin composition that does not deteriorate physical properties such as heat resistance and impact resistance.

[Means for Solving the Problems] Unfortunately, the present invention provides a resin composition consisting of (a) polyamide resin, (b) polyphenylene ether resin,
The resin composition contains a sufficient amount of flame retardant to make the resin composition self-extinguishing, the polyamide resin forms a continuous phase, and the diameter of the dispersed phase of the polyphenylene ether resin dispersed in the polyamide resin is 0. The present invention provides a flame-retardant polyamide resin composition characterized by having a particle size of 6μ or less.

The polyamide resin used as component (a) in the present invention may be a known polyamide commonly used in injection molding, and is a polymer having a -CONH- bond in the main chain, and can be melted by #I. . Typical examples include 4-nylon, 6-nylon, 6,6-nylon, 4.6-nylon, 12-nylon, and 6.10-nylon.
Nylon, polyamides from terephthalic acid and/or isophthalic acid and hexamethylene diamine, polyamides from terephthalic acid and trimethylhexamethylene diamine, polyamides from adipic acid and metaxylylene diamine, terephthalic acid and 4,4'-diamino Examples include polyamides from dicyclohexylmethane. Among these, 6-nylon and 6.6-nylon are particularly preferred.

In the present invention, the polyphenylene ether resin used as component (b) has the following general formula % formula % ([[) (wherein R+, R2, R3, R4, R5, R6 are the same or different ter 1 carbon number excluding t-butyl group
-4 monovalent residues such as alkyl groups, aryl groups, hydrogen, halogens, and R5 and R8 are not ice packs at the same time,
) is repeated 1L times, and the constituent unit is (1) or (I)
and (II), and a graft comonomer obtained by graft polymerization of the IT polymer styrene and the like. Its reduction accuracy (0,5
3/d+, chloroform solution, measured at 30°C) is 0.1
5 to 0.70, more preferably 0.20 to 0
The range is 60.

Specific examples thereof include poly(2,6-dimethylphenylene-1.4-ether), poly(2,6-diethylphenylene-1,4-ether), and boron(2,6-cyclophenylene). -1.4-ether), poly(2,6-
dibromphenylene-1゜4-ether), poly(2-
Methyl-6-nitylphenylene1. 4-ether),
Poly(2-chloro-6-methylphenylene-1,4-ether), poly(2-methyl-6-itubrobylphenylene 1,4-ether), poly(2,6-di-n-propylphenylene- 1,4-ether), poly(2-chloro-6-promphenylene-l, 4-ether), poly(2-chloro-6-nitylphenylene-l 4-ether), poly(2-methylphenylene) -1,4-ether), poly(2-chlorophenylene-1,/L-ether), poly(2-phenylphenylene-1,4-ether), poly(2-bromo-6-phenylphenylene I,
4-ether), their copolymers, and their styrene compound graft polymers.

In the present invention, an elastomer may be used as component (c) of the resin component.

The elastomer that can be used in the present invention is used to improve Ii4 impact resistance, etc., and is an elastomer-like substance at room temperature that has a glass transition point of 0° C. or lower.

For example, polybutadiene, styrene-butanoene copolymer, styrene-isobutene #polymer, acrylonitrile-styrene-butadiene co(combined), ethylene-α-olefin copolymer, ethylene-α-olefin-polyene copolymer, acrylic rubber, Rubber polymers such as polyisoprene, styrene-butadiene 10x copolymer, styrene-isobutene block polymer, hydrogenated styrene-butadiene block copolymer, styrene-grafted ethylene-propylene elastomer, ethylene ionomer resin, etc. There are thermoplastic elastomers, and these polymers may also be modified with carboxyl groups, f1% hydrate groups, epoxy groups, hydroxyl groups, 7-mino groups, etc.

Preferred elastomers include styrene-butanoene copolymers, ethylene-α-olefin copolymers, styrene-butadiene block copolymers, hydrogenated styrene butadiene copolymers, and the like. Those modified with chemical groups, epoxy groups, etc.
More preferred.

Styrene-atadiene block copolymers and styrene-isoprene block copolymers include those having AB type, ABA type, ABA taper, and radial teleblock type structures.

The flame retardants used in the present invention include halogenated flame retardants such as halogenated hydrocarbons, halogenated polystyrene, halogenated bisphenol compounds, and halogenated phosphorus compounds, triphenyl phosphate, tricresyl phosphate, and cresyl phosphate. Halogen-free phosphorus flame retardants such as dildiphenyl phosphate, nitrogen-containing flame retardants such as melamine, cyanuric acid, and diguanamino, and inorganic flame retardants such as antimony trioxide, aluminum hydroxide, and red phosphorus are commonly used. IF5 or two or more types of silica fuel can be used.

In the resin composition of the present invention, a resin composition comprising a polyamide resin, a polyphenylene ether resin, and preferably an elastomer contains a sufficient amount of silica retardant to make the resin composition self-extinguishing. And,
If the polyamide resin forms a continuous VA phase and the diameter of the dispersed phase of the polyphenylene ether resin dispersed in the polyamide resin is 0.6μ or less, the gIF of the resin component is 79. The ratio is not limited.

A preferred composition ratio of the resin components is such that the blending amount of the polyamide resin is 40 to 90 wL%, more preferably 50 to 85%.
wt% range. If it is less than 40 wt%, the polyamide resin becomes difficult to form a continuous phase, which may result in a decrease in oil resistance, which is undesirable. If it exceeds 90 wt%, hygroscopicity increases, which is undesirable.

The compounding machine for polyphenylene ether resin preferably has 1
0-50 wt%, more preferably 15-4,5 w
It is in the range of t%.

At 10 wt% ungrooved, the low temperature +51 shock resistance is insufficient, and at more than 50 wt%, the moldability deteriorates, which is not preferable.

The blending amount of the elastomer is preferably 0 to 30 wL%,
More preferably in the range of 5 to 25 wt% *30 wt
%, it is not preferable because the rigidity decreases.

In the present invention, the blending amount of the flame retardant is
An amount sufficient to make the resin composition self-extinguishing, usually 5 to 50 parts by weight, per 100 parts by weight of the resin composition consisting of a polyphenylene ether resin and preferably an elastomer.
Parts by weight, preferably 8 to 40 parts by weight.

In the present invention, the dispersed structure of the resin composition can be obtained by staining and fixing with osmium tetroxide and/or ruthenium tetroxide.
Transparent Mi thin section prepared in 4! ! The dispersed structure of the present invention, which can be observed with an electron microscope, is such that the polyamide resin forms the continuous phase and the polyphenylene ether resin forms the dispersed phase.

The diameter of the polyphenylene ether resin dispersed phase in the resin composition of the present invention is such that most of the polyphenylene ether vIWI dispersed phase has a diameter of 0. It is 6μ or less.

When the number of particles exceeding 0.6μ increases, impact resistance decreases.

The measurement of the polyphenylene ether resin dispersed phase was carried out at a photographic magnification of 10,000 times, and when it was elliptical, a perpendicular line was drawn at the center of the long axis and the long axis, and the distance of the intersecting point with the ellipsoid was measured as the short axis. , D obtained from the formula D=(major axis+minor axis)/2 is the diameter of the dispersed phase.

The method for producing the resin composition of the present invention includes a method in which a modified polyphenylene ether resin in which a carboxylic acid and its derivative group or an epoxy group are bonded to a polyphenylene ether resin, a polyamide resin, and a flame retardant are mixed together. preferable.

In the present invention, the modified polyphenylene ether resin preferably used can be obtained by, for example, reacting a polyphenylene ether resin with a 1, 2-type olefin compound having a carboxylic acid and its derivative group or an epoxy group in the presence of a radical generator. can get.

Specific examples of 1,2-substituted olefin compounds having a carboxylic acid group, #anhydride group, or epoxy group to be reacted with the polyphenylene ether resin include maleic anhydride, maleic acid, itaconic anhydride, fumaric acid, and methylnadic anhydride. , dichloromaleic anhydride, acrylic acid, methacrylic acid, glycidyl methacrylate, and the like.

The radical generator represents a known organic peroxide or diazo compound, and specific examples include benzoyl peroxide, dicumyl peroxide, dobutyl peroxide,
Examples include cumene hydroperoxide and azobisisobutyronitrile. Two or more of these radical generators can also be used in combination.

Modified polyphenylene ether resin used in the present invention! The manufacturing method is not limited in carrying out the present invention, and for example, the following method can be used.

Special Publication No. Sho 52-30.991, Special Publication No. Sho 52-19
As disclosed in Japanese Patent No. 864, a solution containing a polyphenylene ether resin has a carboxylic acid group, an acid anhydride group, or an epoxy group in the coexistence of a radical generator! , 2-
A method of adding a substituted olefin compound and stirring continuously at a temperature of 50 to 200'C for several tens of minutes.

2) As disclosed in Japanese Patent Publication No. 59-11805, a method in which each component is brought into contact with each other while melt-kneading in a system substantially free of solvent or a system containing a small amount of solvent.

In the production of the resin composition of the present invention, if necessary,
It is preferable to use an elastomer in addition to the above components. Preferred elastomers are elastomers modified with carboxyl groups, acid anhydride groups, epoxy groups, etc.
For example, '5' by a known method such as the method of Tokuho No. 7443 No. 58-7443. It is something that can be built.

The resin composition of the tree invention may contain ingredients such as pigments, dyes, heat stabilizers, antioxidants, weathering agents, nucleating agents, lubricants, plasticizers, etc., to the extent that their moldability and physical properties are not impaired. Antistatic agents, reinforcing fillers, other polymers, etc. can be added during any manufacturing/molding process.

The resin composition of the invention can be mixed in a molten state using various mixing machines used for mixing general polymeric substances. Suitable mixing devices include, for example, a screw type extruder with a single shaft or a double shaft, a mixing roll, a Banbury mixer, a kneader, a Brabender, and the like.

The resin composition of the present invention can be easily processed into molded articles of various shapes by any conventionally known coloring processing method, such as injection coloring method or extrusion molding method.

The tree R5 composition of the present invention having the above structure has flame retardancy,
It has excellent impact resistance and does not deteriorate the mechanical properties of the pond.

The resin composition of the present invention can be made into a wide variety of practically useful products such as films, sheets, injection molded products, and compression molded products.

[Example] The present invention will be described below with reference to Examples, but the present invention is not limited thereto. In the examples, "r parts" indicates "parts by weight."

Incidentally, the physical properties of the resin compositions in the Examples were determined by the method of illumination.

l) Impact resistance Using a notched test piece with a thickness of 1/8", the Izont impact strength was measured by ASTM Rho 256 at 23° C. in an absolutely dry state.

2) Using a heat-resistant 1/8" thick injection molded piece, ASTM D-64
8, the heat distortion temperature was measured at 18.6 Kg/c 2 in an absolutely dry state.

3) Using a rigid 1/8” thick injection molded piece, ASTM D-
The flexural modulus was measured in an absolutely dry state at 23° C. using 790-80.

4) Underwr+ using a flame retardant 1/+6” thick injection molded piece.
ters Laboratory (UL) Bullet
Flame retardancy was evaluated according to tin No. 94 standard.

Reference Example: Production of modified polyphenylene ether tree rtIA Poly(2,6-dimethylphenylene-1,4-ether) (hereinafter referred to as PPE) with a number average degree of polymerization of 0 10
After tri-blending 0 parts of sheet butyl peroxide and 3 parts of sugar water maleic acid at room temperature,
Using a vented twin-screw extruder with a diameter of 30■φ and L/D = 30 that rotates in different directions, the cylinder temperature is 30°C and the screw rotation speed is 75 rpm. iI melted, extruded at a residence time of ml, cooled with water, pelletized, and maleic anhydride-modified poly(2,6-dimethylphenylene-1,4-ether) (hereinafter referred to as modified polyphenylene ether resin-containing). ) was obtained. After dissolving the obtained pellet of modified polyphenylene ether resin A in chloroform, about 1
It was purified by reprecipitation in 0 times the volume of acetone. After drying the modified polyphenylene ether resin prepared by M,
0 [was collected and dissolved in chloroform to a thickness of approximately 50 cm.
Then, this film was dried and used as a sample for infrared spectroscopy measurement. -(co)20- derived from the reaction between air and water in this sample with maleic acid.
The presence of the structure was confirmed by the infrared absorption spectrum at 1780 cm-'
This was confirmed by nearby absorption peaks.

The absorbance ratio at 1780 cm-' and 960 cm-' (absorption of PPE) was 0.14.

Reference Example 2 Number average degree of polymerization of modified polyphenylene ether tree iB! 40 poly(2,6-dimethylphenylene-1.4-1-thyl) (hereinafter referred to as PPE) 100
parts of sheet butyl peroxide. After tri-blending 1 part of maleic anhydride and 1 part of maleic anhydride at room temperature, several maleic acid-modified poly(
2,6-dimethylphenylene-1,4-ethyl) (hereinafter referred to as modified polyphenylene ether resin B) was obtained. The infrared absorption spectrum of the obtained pellet of modified polyphenylene ether resin B was measured in the same manner as in Reference Example 1.

The absorbance ratio at 1780 cm-' and 960 cm-' (P PE absorption) was 0.05.

Example 3 Production of elastomer A Hydrogenated styrene-butadiene block copolymer (shell/
Chemical Company [, Kraton C1652, 29% styrene content, 5EBS type.

Here, S represents styrene, EB represents ethylene butylene, )100! 1 for the If section. After uniformly mixing 2 parts by weight of maleic anhydride and 0.3 parts of Parhexa 25B (NOF), a twin-screw extruder (screw diameter 4
The maleic acid addition reaction was carried out at a cylinder temperature of 260° C. while removing some unreacted maleic acid by suctioning from the vent. After drying this modified elastomer under reduced pressure under heat, analysis revealed that the amount of maleic anhydride added was 0.6% by weight. The amount of maleic anhydride added was determined by leaving the room with sodium methylate.

Reference Example 4 Production of Elastomer B Ethylene-propylene copolymer (manufactured by Mitsui Petrochemical Co., Ltd., Tafmer P 01 B (l M 14.5 g/1
0 minutes)) 2. per 100 parts by weight. oil L part maleic anhydride, 0.5 parts by weight Perhexa 25B (Japan Oil N
After uniformly mixing N), use a twin-screw extruder (screw diameter 4
5 mm; L/D=33, with a vent), and the maleic acid addition reaction was carried out at a cylinder temperature of 280°C while removing unreacted maleic anhydride by suction from the vent. After drying this modified elastomer under reduced pressure by heating, analysis revealed that the amount of maleic anhydride added was 0.8ii%.
Met. Note that the IWk of maleic anhydride was determined by leaving the room with sodium methylate.

Real a'W41 Nylon 6.6 (Asahi Kasei Corporation) 51, Leona 130
After tri-blending 70 parts of the modified polyphenylene ether resin A obtained in Reference Example 1, a co-rotating twin-screw extruder (Jigiteko Co., Ltd.!!, diameter 45 mmφ, cylinder temperature set at 280°C) was used. L/D=33), the mixture was melt-kneaded, cooled, and then pelletized to obtain a pellet-shaped tree t& composition.

After drying this resin composition at 80°C for 8 hours, 6 parts of melamine cyanurate (ml of Nissan Chemical Co., Ltd.) as a flame retardant was triblended with 100 parts of the resin composition. Co-rotating twin-screw extruder set at 280℃ (tl!! Kai Tekko Co., Ltd.) Diameter 45mmφ
, L/D=33), and after cooling, pelletized to obtain a pelletized resin composition.

This resin composition was dried at 80° C. for 8 hours, and then injection molded at 290° C. to prepare test pieces for measuring physical properties, and evaluated.

The Izotsu impact strength is 5.5 Kg-cm/cm, the flexural modulus is 27000 Kg/cm', the heat distortion temperature is 120°C, the flame retardance is vo, and the heat resistance, rigidity,
It had excellent impact resistance and good flame retardancy.

The particle size of the aromatic polyether resin in the dispersed phase of this composition is mostly 0. 13μ or less, and 0. There were 3 particles that could cover 6μ.

Comparative example! 70 parts of the polyamide resin used in Example 1, poly(2,6-dimethylphenylene!) with a number average degree of 1:140.

A resin composition was obtained in the same manner as in Example 1 using 30 parts of 4-ether) and 6 parts of a flame retardant. This resin composition was evaluated in the same manner as in Example 1. The heat resistance, rigidity, and flame retardance were the same, but the impact resistance was 1.5 kg-cm/c.
It was inferior to m. The particle size of the aromatic polyether resin in the dispersed phase of this composition was mostly 5 to 15 microns.

Comparative Example 2 A resin composition was obtained in the same manner as in Example 1 using 70 parts of the polyamide tree N used in Example 1, 30 parts of modified polyphenylene ether tree 11rB obtained in reference FM2, and 6 parts of a flame retardant. This resin composition was prepared in the same manner as in Example 1,
evaluated. The heat resistance, rigidity, and flame retardance were comparable, but the impact resistance was inferior at 3.1 Kg·cm/cm. The particle size of the polyphenylene ether resin in the dispersed phase of this composition is:
Most of them were 1-3μ.

Example 2 Nylon 6.6 (manufactured by Asahi Kasei Corporation, Leona 130O)
8) Using 60 parts, 40 parts of the modified polyphenylene ether resin A obtained in Reference Example 1, and 25 parts of brominated polystyrene (manufactured by Ferro Corporation, Pyrocheck 68PB) and 5 parts of antimony dioxide as flame retardants,
A resin composition was obtained and evaluated in the same manner as in Example 1.

Izotsu impact strength is 4.5Kg-cm/cm, flexural modulus is 26500Kg/cm2, heat distortion temperature is 155℃
The particle size of the polyphenylene ether resin, which is the dispersed phase of flame retardancy ■-0, heat resistance, rigidity, and durability, is mostly 0.6/1 or less, and there are only 3 particles that can collect 0.6μ. Ta.

Comparison 11A3 Nylon 6.6 (Asahi Kasei Co., Ltd.>U, Leos 1300
Using 60 parts of S), 840 parts of the modified polyphenylene ether resin obtained in Reference Example 2, and 25 parts of brominated polystyrene (Pyrocheck [38PIF, manufactured by Ferroco Bore Soyon Co., Ltd.] as a flame retardant) and 5 parts of antimony dioxide, Example A resin composition was obtained and evaluated in the same manner as in Example 1.

The flexural modulus and flame retardance were the same as in Example 2, but the Izot impact strength was 2.2 Kg-cm/cm and the heat distortion temperature was 145°C. The particle size of the polyphenylene ether resin in the dispersed phase of this composition is 1.5 to 5.
It was μ.

Example 3 Nylon 6.6 (manufactured by Asahi Kasei Corporation, Leona 1300)
5) 45 parts, modified polyphenylene ether tree 1A obtained in Reference Example 130 parts, elastomer A2 obtained in Reference Example 4
0 parts, glass fiber 11 (manufactured by Asahi Fiberglass, MA-4
16) 25 parts, melamine cyanurate 6 as a flame retardant
The =+ value was determined in the same manner as in Example 1.

Izotsu impact strength is 14. 1Kg-cm/cm, flexural modulus is 570001 (g/cm2, heat distortion temperature 23
0'C, fi flammability V-1, excellent heat resistance, rigidity, impact resistance, and good flame retardancy. The particle size of the polyphenylene ether resin in the dispersed phase of this composition is mostly 0.6
There were 4 particles with a particle diameter of less than 0.6 μm.

Comparative Example 4 Nylon 6.6 (manufactured by Asahi Kasei Corporation, Leona 1300)
S) 45 parts, number average degree of polymerization! 40 poly(2,6-dimethylphenylene-1,4-ether), 20 parts of elastomer A obtained in Reference Example 4, 25 parts of glass fiber (Asahi Fiberglass, MA-416), as a flame retardant. ,
Evaluation was performed in the same manner as in Example 1 using 6 parts of melamine cyanurate.

The flexural modulus and flame retardancy were the same as in Example 3, but the Izot impact strength was 8. The heat deformation temperature was 5Kg-cm/cm and 223°C. The particle size of the polyphenylene ether resin in the dispersed phase of this composition was 2 to 6 microns.

Comparative Example 5 Nylon 6.6 (manufactured by Asahi Kasei Corporation, Leona 1300)
5) 45 parts, modified polyphenylene ether tree T obtained in Reference Example 2 & 830 parts, elastomer A obtained in Reference Example 4
15 parts, glass fiber (manufactured by Asahi Fiberglass, MA-4
16) 25 parts, as a flame retardant, melamine shea or rate 6
The + value was determined in the same manner as in Example 1.

The flexural modulus, heat resistance, and flammability were the same as in Example 3, but the Izot impact strength was 9.5 Kg·cm/
They were dancing like cm. The particle size of the polyphenylene ether resin in the dispersed phase of this composition was 1 to 4 microns.

As mentioned above, when the dispersed particle size of the polyphenylene ether resin of the dispersed phase exceeds 0.6μ and is outside the range of the present invention,
Poor heavy impact resistance, heat resistance, etc.

[Effects of the Invention] As is clear from the above, according to the present invention, it is possible to provide a flame-retardant polyamide resin composition that is excellent in heat resistance, rigidity, and impact resistance, and has good flame retardancy.

The resin composition of the present invention can be made into a wide variety of practically useful products such as films, sheets, injection molded products, compression molded products, etc. for electrical, electronic, and automobile applications.For example, microwave ovens, juicers, etc. Can be used in the housings and chassis of mixers, dish dryers, refrigerators, air conditioners, etc.; housings, air conditioner vents, computers and related parts, video cameras, cameras, facsimile machines, copiers, telephones, etc.

Patent applicant: Asahi Kasei Koboku Co., Ltd.

Claims (2)

[Claims] (1) A resin composition consisting of (a) polyamide resin and (b) polyphenylene ether resin contains a flame retardant in an amount sufficient to make the resin composition self-extinguishing, and the polyamide resin is a continuous phase. and the diameter of the dispersed phase of the polyphenylene ether resin dispersed in the polyamide resin is 0.6.
A flame-retardant polyamide resin composition characterized in that it has a particle size of μ or less. (2) (a) Polyamide resin 40 to 90 wt%, (b)
Polyphenylene ether resin 10-50wt% and (
c) A flame retardant according to claim 1, characterized in that the resin composition contains a flame retardant in an amount sufficient to make the resin composition self-extinguishing. Flammable polyamide resin composition.