JP2001115012A - Colored and reinforced polyamide resin molding product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a colored and reinforced polyamide resin molding product having a slight change in color tone even in an environment exposed to ultraviolet rays. SOLUTION: This colored and reinforced polyamide resin molding product is characteristically a molding product composed of a reinforced polyamide resin composition comprising at least a polyamide, an inorganic filler, a colorant and a copper compound, has an L value being one index of color tone in a range of 0-30 and a central line average roughness (Ra) being one index of surface characteristics in a range of 0.5-8 μm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a colored molded article suitable for exterior and interior parts of automobiles and houses, and more particularly, to a reinforced polyamide resin molded article with less fading even in an environment exposed to ultraviolet rays. About.

[0002]

2. Description of the Related Art Polyamide resins are widely used for parts such as automobiles and electric / electronic products because of their excellent mechanical and thermal properties and oil resistance. In addition, the reinforced polyamide resin in which glass fiber is blended with polyamide, the mechanical properties, heat resistance, chemical resistance, etc. are greatly improved compared to the polyamide resin alone, so parts that were conventionally made of metal can be reduced in weight and weight. It is also possible to use a reinforced polyamide resin from the viewpoint of streamlining the process and the like, and its use has been actively promoted in recent years.

Further, in order to use the reinforced polyamide resin outdoors, carbon black or the like is often added to impart weather resistance to the reinforced polyamide resin. However, there is a problem that the test piece after the outdoor exposure has remarkable fading, and its use is greatly restricted.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a molded article having a small change in color tone even in an environment exposed to ultraviolet rays.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that a reinforced polyamide resin composition having a specific composition is used to form a molded article having a specific color tone and specific surface characteristics. The present inventors have found that a product can solve the above problem, and have completed the present invention. That is, the present invention is as follows. 1) A molded article comprising a reinforced polyamide resin composition containing at least a polyamide, an inorganic filler, a colorant and a copper compound, wherein the L value, which is one of the index of color tone, is in the range of 10 to 30, and A molded article made of a colored reinforced polyamide resin, wherein a center line average roughness (Ra), which is one of the indicators of the surface characteristics, is in a range of 0.5 to 8 μm.

2) The polyamide is a polyamide containing 3 to 90 mol% of an aromatic ring-containing polymer unit in its structure, and the inorganic filler is at least one selected from glass fiber, wollastonite, kaolin, mica and talc. 2. The molded article made of a colored reinforced polyamide resin according to the above item 1, wherein the inorganic filler is two inorganic fillers. 3) The molded article made of a colored reinforced polyamide resin as described in 2 above, wherein the average fiber diameter of the glass fibers is 15 to 30 μm.

Hereinafter, the present invention will be described in detail. In the molded article obtained from the reinforced polyamide of the present invention, the L value, which is one of the indexes of the color tone, is in the range of 10 to 30, and the center line average roughness (Ra), which is the index of the surface characteristics, is 0.1. 5-8μ
m. The L value used in the present invention is a value that can be determined according to JISZ-8730, for example, a color difference meter ND-30 manufactured by Nippon Denshoku Co., Ltd.
JIS Z8722 with 2A visual field C light source using 0A
The value can be determined after calibrating the apparatus using a standard white plate based on a white surface defined in DIN 5033 Blatt 9 described in Section 4.3.6. The L value can be obtained from the stimulus values X, Y, and Z obtained at that time. L value is 1
If it is less than 5 or more than 30, discoloration of the molded article after outdoor exposure or after a weathering test is extremely undesirable.

The center line average roughness (Ra) used in the present invention can be determined according to JIS B-0601. More specifically, the center line average roughness was obtained by extracting a portion of a constant length from the roughness curve in the direction of the center line, and arithmetically averaging the absolute value of the deviation between the center line and the roughness curve of the extracted portion. Value. This value is determined using, for example, a surf test 211 of Mitutoyo Surface Roughness Co., Ltd. and a reference length of 2.5.
It can be determined by performing five measurements in mm and determining the average value.

When the center line average roughness of the molded article obtained from the reinforced polyamide resin is less than 0.5 μm or more than 8 μm, the discoloration of the molded article after outdoor exposure or after a weather resistance test is extremely undesirable. Although the polyamide used in the present invention is not particularly limited, for example, polyamide 6, polyamide 6
6, polyamide 610, polyamide 612, polyamide 11, polyamide 12, polyamide 46, and other aliphatic polyamides, polyamide MXD6, polyamide obtained by polymerizing terephthalic acid and hexamethylene diamine (hereinafter, polyamide 6T), and hexamethylene diamine and isophthalic acid. Semi-aromatic polyamides made of polymerized polyamides (hereinafter polyamide 6I) and the like, and blends and copolymers thereof are exemplified.

The preferred polyamide used in the present invention has an aromatic ring-containing polymer unit concentration in the polyamide of 3 to 3.
The polyamide is 90 mol%. For example, a semi-aromatic polyamide alone, a mixture of a crystalline semi-aromatic polyamide and an amorphous semi-aromatic polyamide, and a mixture of a semi-aromatic polyamide and an aliphatic polyamide are all aromatic polyamide-containing polymer units in the entire polyamide. If the concentration is within the above range, it can be used without any problem.

Specific examples of the crystalline semi-aromatic polyamide include hexamethylene terephthalamide units (hereinafter referred to as 6T polymer units) obtained from terephthalic acid and hexamethylene diamine, and isophthalic acid and hexamethylene diamine. Hexamethyleneisophthalamide units (hereinafter referred to as 6I polymer units), metaxylylene adipamide units obtained from adipic acid and metaxylylenediamine (hereinafter referred to as MXD6 polymer units), terephthalic acid and nonanediamine Examples thereof include nonanediamine terephthalamide units (hereinafter referred to as 9T polymer units), and at least one unit selected from these units and hexamethylene adipamide units (hereinafter referred to as 6T units) obtained from adipic acid and hexamethylenediamine.
6 polymer units) and caprolactam unit (hereinafter referred to as 6 polymer units).
Copolymer unit) and hexamethylene dodecamide unit (hereinafter, referred to as 612 polymer unit).

Examples of the amorphous semi-aromatic polyamide include polyamide obtained from terephthalic acid and trimethylhexamethylenediamine, bis (4-amino-methylhexyl) methane, hexamethylenediamine, terephthalic acid, and isophthalic acid. , Polyamide obtained from caprolactam, bis (4-amino-3-methylcyclohexyl) methane, bis (4-amino-methyl-5-ethylcyclohexyl) methane, hexamethylenediamine, terephthalic acid, isophthalic acid, and non-polyamide obtained from caprolactam. Crystalline polyamide and the like.

When the concentration of the aromatic ring-containing polymer unit is less than 3 mol%, discoloration due to the effect of deterioration due to moisture is unfavorably large in outdoor exposure such as rainfall. On the other hand, if it is more than 90 mol%, the moldability is undesirably reduced. As a method for measuring the aromatic ring-containing polymer unit concentration in the polyamide, for example, a method of dissolving and measuring the sample polyamide, using bisulfuric acid or deuterated trifluoroacetic acid as a solvent, using NMR can be used.

It is also possible to utilize a method in which the polyamide component is chemically decomposed by hydrolysis or the like, and the obtained monomer is identified using an analytical means such as gas chromatography. In the present invention, deuterated trifluoroacetic acid was used as a solvent at a sample concentration of 2% by weight, and F
1H-NMR was measured using T-NMR DPX400. In determining the chemical shift value, tetramethylsilane was used as a reference substance.

A particularly preferred polyamide in the present invention is a polyamide 66 / 6I copolymer in which the 66 component is 70 to 95% by weight and the 6I component is 5 to 30% by weight. Is 72-9
It is a copolymer having 3% by weight and 7 to 28% by weight of the 6I component. If the amount of the 6I component is less than 5% by weight, a molded article having excellent molded appearance and excellent weather resistance cannot be obtained. If the amount of the 6I component is more than 30% by weight, a sufficient cooling time is required in the mold. If not, a molded article having an excellent surface appearance cannot be obtained, or the molded article becomes difficult to release from the mold,
There is concern that productivity will suffer.

The polyamide in the present invention can be produced, for example, from a salt of adipic acid, isophthalic acid and hexamethylenediamine by a melt polymerization method, a solid state polymerization method, a bulk polymerization method, a solution polymerization method, a method combining these, or the like. A method of performing polycondensation may be used. Further, for example, a method such as solution polymerization or interfacial polymerization from adipic acid chloride, isophthalic acid chloride and hexamethylenediamine may be used. Among these, a method based on melt polymerization or a combination of melt polymerization and solid phase polymerization is more preferably used in the present invention from an economic viewpoint.

The molecular weight of the polyamide used in the present invention is 1.5 to 1.5 in terms of sulfuric acid solution viscosity ηr (measured at 25 ° C. using 100 ml of 95.5% sulfuric acid per 1 g of polymer).
It is preferably 3.5, more preferably 1.8 to
3.0, and more preferably 2.0 to 2.8. ηr
If the ratio is less than 1.5, the resin composition becomes brittle, and furthermore, the drawing from the nozzle tip of the cylinder becomes severe during molding, and molding may not be possible. Also, ηr is 3.
If it is higher than 5, the melt viscosity of the resin becomes too high, and depending on the design of the mold at the time of molding, floating of the inorganic filler may be partially observed, and the surface glossiness tends to decrease.

The amount of polyamide in the reinforced polyamide resin composition used in the molded article of the present invention is 30.
It is in the range of 70 to 70 parts by weight, preferably 35 to 67 parts by weight. If the amount is less than 30 parts by weight, the fluidity of the resin becomes poor, and it becomes difficult not only to fill the thin portion with the resin, but also to obtain a molded article having good surface gloss. On the other hand, if the amount is more than 70 parts by weight, the strength and rigidity may be insufficient as a molded product that can be replaced with metal, which is not preferable.

The inorganic filler used in the present invention is at least one inorganic filler selected from the group consisting of glass fiber, wollastonite, kaolin, mica, and talc. A combination with kaolin, mica or wollastonite is preferable in view of strength, rigidity, appearance of a molded product, and fading resistance which can be used for interior and exterior parts of automobiles and houses. As these inorganic fillers, those obtained by adhering a known silane coupling agent to the surface thereof may be used. For example, γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, N-β (aminoethyl) -γ-aminopropyltrimethoxysilane, vinyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, etc. are used. it can.

The glass fibers used in the present invention may be those commonly used for thermoplastic resins. The fiber diameter and length are not particularly limited, and may be, for example, any of chopped strand, roving, and milled fiber having an average fiber diameter of 5 to 30 μm. When a chopped strand is used, its length may be appropriately selected from the range of 0.1 to 6 mm. In the present invention, when glass fibers are used as the inorganic filler, glass fibers having an average fiber diameter of 15 to 30 μm can be particularly preferably used. With a composition using glass fibers having an average fiber diameter in this range, when exposed outdoors, it is possible to obtain a molded article that exhibits the most excellent anti-fading effect,
It can be particularly preferably used.

The compounding amount of the inorganic filler in the reinforced polyamide resin composition used in the molded article of the present invention is 7
It is 0 to 30 parts by weight, preferably 65 to 33 parts by weight. If the amount is more than 70 parts by weight, the fluidity of the resin is deteriorated, and it becomes difficult not only to fill the thin portion with the resin but also to obtain a molded product having good surface gloss. On the other hand, if the amount is less than 30 parts by weight, the strength and rigidity of a molded product that can be replaced with metal may be insufficient, which is not preferable.

Examples of the colorant used in the present invention include pigments such as carbon black, graphite, iron black, red iron oxide, quinacdrine, titanium oxide, titanium yellow, ultramarine blue, cobalt oxide pigments, zinc oxide and zinc sulfide. And dyes such as perinone, nigrosine, and phthalocyanine derivatives can be used, and these can be appropriately blended to make the color tone L value of the final molded product in the range of 10 to 30.

The amount of the colorant added is 100 parts by weight of the total amount of the polyamide and the inorganic filler in the composition.
0.1 to 10 parts by weight, preferably 0.1 to 5 parts by weight, more preferably 0.3 to 3 parts by weight. 0.1
If it is less than 1, the effect of hiding discoloration due to ultraviolet rays is poor, and discoloration cannot be suppressed. On the other hand, if the amount exceeds 10 parts by weight, the mechanical properties and the appearance of the molded product tend to deteriorate, which is not preferable.

Examples of the copper compound used in the present invention include copper chloride, copper bromide, copper fluoride, copper iodide, copper thiocyanate, copper nitrate, copper acetate, copper naphthenate, copper caprate,
Copper laurate, copper stearate, copper acetylacetone,
Examples thereof include copper (I) oxide and copper (II) oxide, and particularly preferable in the present invention are copper halide such as copper iodide and copper acetate.

The amount of the copper compound to be added is 10 to 1000 ppm, particularly preferably 50 to 800 ppm, based on the copper in the copper compound, relative to the polyamide in the reinforced polyamide resin composition. 10p added
When it is less than pm, it is difficult to sufficiently exert the effect of improving the fading property, and when the addition amount exceeds 1000 ppm, the effect of improving the fading property is saturated, so that the effect of increasing the addition amount is obtained. Conversely, for example, a polymerization reactor,
Corrosion of metals such as extruders and molding machines, corrosion of metals inserted into molded products, and the like are likely to occur.

The copper compound in the present invention is more preferably used in combination with an iodine compound. Examples of the iodine compound include potassium iodide, magnesium iodide, ammonium iodide, and the like, and iodine alone may be used. More preferably, it is potassium iodide. The preferred compounding amount of the iodine compound is the gram atomic ratio of the iodine element and the copper element to the polyamide resin ([iodine] /
[Copper]) is 5 to 30, more preferably 10 to 25. If it is less than 5, a sufficient effect of improving weather resistance cannot be obtained, and if it is more than 30, for example, corrosion of a metal in a polymerization reactor, an extruder, a molding machine, etc., corrosion of a metal inserted in a molded product, and the like tend to occur. Become.

The method of blending, mixing and kneading the reinforced polyamide resin in the present invention and the order thereof are not particularly limited, and they are mixed by a commonly used mixer such as a Henschel mixer, a tumbler, a ribbon blender or the like. I just need. As the kneader, a single-screw or twin-screw extruder is usually used. The molded article according to the present invention is obtained by producing the composition pellets by the above-described extruder and molding the pellets into an arbitrary shape by compression molding, injection molding, extrusion molding or the like.

In the colored reinforced polyamide resin molded article of the present invention, the L value, which is one of the indexes of the color tone, is in the range of 10 to 30, and the center line average roughness (the index of the surface properties) is used. Ra) is in the range of 0.5 to 8 μm. In order to satisfy these conditions, the pigment at the time of coloring and / or
Alternatively, in addition to the dye composition, it is preferable to mold using a molding die whose surface is grained. In that case, for example, in injection molding, the conditions include, for example, TH113, G
An example is a method in which a mold having a grain shape represented by R503, GR505, M102, or the like is used and the molding temperature is in a range of 250 to 310 ° C and the mold temperature is in a range of 40 to 120 ° C.

The reinforced polyamide resins of the present invention may contain one or more conventional additives, such as stabilizers and inhibitors against oxidation, heat and UV degradation, as long as the objects of the invention are not impaired, lubrication. Agents and release agents, nucleating agents,
A foaming agent, a plasticizer, a flame retardant, an antistatic agent, and the like can be appropriately added. The molded article according to the present invention includes, for example, an outer door handle, a wheel cap, a roof rail,
It can be particularly preferably used for molded articles for automobile parts such as door mirror bases, room mirror arms, sunroof deflectors and the like.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples. In addition, the evaluation method is as follows.

[Color tone and surface characteristics of molded article] As a molded plate for evaluation, an IS150E injection molding machine manufactured by Toshiba Machine Co., Ltd. was used. The cylinder temperature was 290 ° C and the mold temperature was 120 ° C.
The injection pressure and injection speed were appropriately adjusted so that the filling time was about 1.5 seconds, and an injection molded plate of 100 × 90 × 3 mm was obtained. With respect to the color tone of this molded plate, the L value was determined using a color difference meter ND-300A manufactured by Nippon Denshoku Co., Ltd. Regarding the surface characteristics, the surface roughness Ra (center line average roughness) was measured using a surf test 211 of Mitutoyo Surface Roughness Meter.
And Rmax (maximum height) were determined according to JIS B0601.

[Determination of Aromatic Ring-Containing Polymer Unit Concentration in Polyamide] The aromatic ring-containing polymer unit concentration was set to 2% by weight of a sample, deuterated trifluoroacetic acid was used as a solvent, and FT-NMR DPX400 manufactured by Brucker was used.
Was used to measure 1H-NMR. The measurement conditions are described below. Measurement temperature: 30 ° C. Pulse width: 2.5 μsec Pulse repetition time: 3.0 sec Number of integration: 128 The chemical shift value was determined using tetramethylsilane as a reference substance.

[Mechanical properties] IS-50 manufactured by Toshiba Machine Co., Ltd.
Screw rotation speed 200rpm using EP injection molding machine
m, 3 mm thick A under molding conditions of resin temperature 290 ° C
An STM type 1 was molded, and the molded piece was used as a sample for measuring physical properties. Tensile breaking strength and flexural modulus were measured according to ASTM D638 and D790, respectively.

[Weather resistance] IS150E manufactured by Toshiba Machine Co., Ltd.
Using an injection molding machine, an injection molded plate was obtained using the same mold as that used for evaluation of surface characteristics. This injection-molded plate was used as a xenon-arc accelerated weathering tester (XE manufactured by Atlas Co.
(NOTEST 1200 CPS) with a black panel temperature of 83 ° C. and water spray conditions of 12 minutes per hour.
It was exposed for 00 hours. As an evaluation method after the weathering test, the color tone of a molded plate before and after exposure was measured, and a color difference meter ND manufactured by Nippon Denshoku
The color difference was determined using -300A. It can be determined that the smaller the color difference (ΔE), the better the fading resistance.

[Polyamide and Inorganic Filler Used in Examples and Comparative Examples] (a) Polyamide a1: Nylon 66 / 6I copolymer: produced according to Production Example 1. Aromatic ring-containing polymer unit concentration 17.6 mol% a2: Amorphous nylon; XE-3038 manufactured by EMS Aromatic ring-containing polymer unit concentration 100 mol% a3: Nylon 66; Leona 13 manufactured by Asahi Kasei Corporation
00 a4: Nylon 6; SF1013A manufactured by Ube Industries, Ltd. a5: Nylon MXD6; Lenny 6002 manufactured by Mitsubishi Engineering-Plastics Co., Ltd. Unit concentration of aromatic ring-containing polymer 100 mol%

(B) Inorganic filler b1: Glass fiber manufactured by Asahi Fiber Glass Co., Ltd., trade name CS03JA416 Average fiber diameter 10 μm b2: Glass fiber manufactured by Asahi Fiber Glass Co., Ltd., trade name CS03FT692 Average fiber diameter, 23 μm b3: Wa Lastnite Hayashi Kasei Co., Ltd. product name VM-8N b4: calcined kaolin Engelhardt product name Translink 445 b5: talc Tatsumori Co., Ltd. product name CRS6002 b6: Mica Yamaguchi Miko Kogyo Co., Ltd. product name A21

[0037]

Production Example 1 2.00 kg of equimolar salt of adipic acid and hexamethylenediamine, 0.50 kg of equimolar salt of isophthalic acid and hexamethylenediamine and 0.10 adipic acid
kg, 29 g of copper iodide, 480 g of potassium iodide and 2.5 kg of pure water were charged into a 5 L autoclave and stirred well. After sufficiently purging with N _{2, the} temperature was raised from room temperature to 220 ° C. over about 1 hour with stirring.

At this time, the internal pressure becomes 1.77 MPa due to the natural pressure of the steam in the autoclave.
The heating was further continued while removing water outside the reaction system so as not to make the pressure more than a. After 2 hours, the internal temperature is 260 ℃
, The heating was stopped, the discharge valve of the autoclave was closed, and the mixture was cooled to room temperature over about 8 hours. After cooling, the autoclave was opened and about 2 kg of the polymer was taken out and pulverized. The obtained pulverized polymer was put in a 10 L evaporator and subjected to solid-state polymerization at 200 ° C. for 10 hours under a stream of N 2. The polyamide obtained by solid-state polymerization contains 17.6 mol% of an aromatic ring-containing polymer unit and contains 96 elements of copper.
ppm.

[0039]

Example 1 As a polyamide, 50 parts by weight of a1 and 0.5 parts by weight of carbon black were mixed, and a TEM35φ twin-screw extruder manufactured by Toshiba Machine Co., Ltd. (set temperature: 280 ° C.,
(Screw rotation speed: 300 rpm) from the feed hopper, and 50 parts by weight of b1 as glass fiber from the side feed port, and the melt-kneaded product extruded from the spinning port is cooled in a strand form, pelletized and colored. A reinforced polyamide resin composition was obtained.

The obtained composition was used in an IS manufactured by Toshiba Machine Co., Ltd.
Using a 150E injection molding machine, a cylinder temperature of 290
℃, mold temperature 120 ℃, the surface Tanazawa Hakkosha part number T
100 × 90 × 3 using a mold with H113 grained
mm injection molded plate was obtained. Further, test specimens for evaluating various physical properties were prepared in accordance with the above-mentioned methods. Other compositions and evaluation results are shown in Table 1. The molded article after the weathering test has a small color difference and no protruding glass fiber is observed.

[0041]

Example 2 and Example 3 The same procedure as in Example 1 was carried out except that the mold used was changed to TH-112 and GR-503, respectively. Table 1 shows the evaluation results.

[0042]

Comparative Example 1 The same operation as in Example 1 was carried out except that a mold having a glossy surface which had not been grained was used. Table 1 shows the evaluation results.

[0043]

Comparative Example 2 Example 1 was repeated except that carbon black was not used, and a mold having a glossy surface that had not been grained was used. Table 1 shows the results.

[0044]

Example 4 In Example 1, 0.5 parts of titanium oxide and 0.08 of carbon black were used instead of carbon black.
Parts, Bengala 0.12 parts, and titanium yellow 0.12
Except for using parts, the same procedure as in Example 1 was carried out to obtain a reinforced polyamide resin composition colored brown. Table 2 shows the composition and evaluation results. Thus, the molded article of the present invention is not limited to black as long as the color tone index L is within the range of the present invention. Is recognized.

[0045]

Examples 5 to 7 In the production of the colored reinforced polyamide resin composition in Example 1, the types and amounts of the polyamide and the inorganic filler were changed as shown in Table 2,
Further, copper iodide was used as a copper compound at 100 pp each.
m, 500 ppm and 1000 ppm, and the same procedure as in Example 1 was carried out. Table 2 shows the evaluation results.

[0046]

Example 8 The glass fiber used in Example 1 was b
Except having changed from 1 to b2, it carried out similarly to Example 1. Table 2 shows the evaluation results. Average fiber diameter is 23μm
It can be seen that the use of the above glass fibers further improves the discoloration.

[0047]

[Comparative Example 3] The molds used were each subjected to TH-
701 was carried out in the same manner as in Example 1 except that 701 was changed. Table 3 shows the evaluation results. As described above, even when a grained die is used, if the surface characteristics of the molded product are out of the range of the present invention, it is found that the fading property is hardly improved.

[0048]

Comparative Example 4 The same operation was performed as in Example 5, except that no copper iodide was added. Table 3 shows the evaluation results. As can be seen from the results, when the colored reinforced polyamide resin composition containing no copper compound is used, even if the surface properties of the molded product satisfy the requirements of the present invention, the fading property is not improved. I understand.

[0049]

Comparative Example 5 The same operation as in Comparative Example 2 was carried out except that a mold grained by GR503 was used as a mold used for molding. Table 3 shows the results. As can be seen from these results, even when the reinforced polyamide molded product satisfies the center line average roughness, which is one of the requirements of the present invention, the L, which is an index of the color tone, does not satisfy the requirements of the present invention. Shows that the discoloration is not improved.

[0050]

Examples 9 to 10 In the production of the colored reinforced polyamide resin composition in Example 1, the types and amounts of the polyamide and the inorganic filler were changed as shown in Table 3, and further, as a copper compound. The procedure was performed in the same manner as in Example 1 except that 100 ppm and 500 ppm of copper iodide were added to copper, respectively. Table 3 shows the evaluation results.

[0051]

[Table 1]

[0052]

[Table 2]

[0053]

[Table 3]

[0054]

The colored reinforced polyamide resin molded article of the present invention has excellent fading resistance as compared with the conventional one, and particularly, the outer door handle, the wheel cap, It can be suitably used in a wide range of fields such as roof rails, door mirror stays, room mirror arms, warper arms, sunroof deflectors, motor covers, door levers, window levers, automotive exterior parts such as chairs and desk legs, and industrial equipment.

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Claims (3)

[Claims] 1. A molded article comprising a reinforced polyamide resin composition containing at least a polyamide, an inorganic filler, a colorant and a copper compound, wherein the L value which is one of the index of color tone is 1
A colored reinforced polyamide resin having a centerline average roughness (Ra) in the range of 0 to 30 and one of the indicators of its surface properties, in the range of 0.5 to 8 μm; Molded products. 2. The polyamide is a polyamide containing 3 to 90 mol% of an aromatic ring-containing polymer unit in its structure, and the inorganic filler is at least one selected from glass fiber, wollastonite, kaolin, mica and talc. The colored reinforced polyamide resin molded article according to claim 1, wherein the inorganic filler is one of two inorganic fillers. 3. The glass fiber has an average fiber diameter of 15 to 30 μm.
The colored reinforced polyamide resin molded article according to claim 2, wherein m is m.