JPH09249776A - Polypropylene resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polypropylene resin composition excellent in flexural modulus, heat resistance and impact resistance. SOLUTION: This composition comprises 99-40 pts.wt. polypropylene component comprising higher than 95-99.99wt.% polypropylene resin (A) and 0.01 to below 5wt.% polypropylene modified with an unsaturated carboxylic acid, its derivative or an unsaturated epoxy compound and having a melt index (as measured at 190 deg.C under a load of 1,050g according to ASTM D1238)of above 50g/10min, 1-60 pts.wt. talc (B) and 0.001-5 pts.wt., per 100 pts.wt. total of components A and B, nucleator (C).

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a polypropylene resin composition, and more particularly to a polypropylene resin composition that can be used for industrial materials, general sundries, and the like.

[0002]

SUMMARY OF THE INVENTION Polypropylene resins are widely used for industrial materials such as automobiles and home appliances, and for general goods such as various containers and daily necessities. It is common practice to add talc as a means for improving its elastic modulus and heat resistance. On the other hand, as a means for improving the elastic modulus, there is a method of adding a crystal nucleating agent. Therefore, both are used together (Japanese Patent Publication No. 59-174)
No. 1).

However, talc easily adsorbs the crystal nucleating agent, and the adsorbed crystal nucleating agent cannot sufficiently exhibit its function. Therefore, it becomes necessary to add more crystal nucleating agent than necessary. However, in some cases,
If a large amount of crystal nucleating agent is added, the impact resistance of the resin may be reduced.

Further, a composition in which a propylene-ethylene block copolymer is used as a polypropylene resin and a crystal nucleating agent and talc are added thereto has improved transparency and good rigidity and low temperature impact resistance. One is disclosed in Japanese Examined Patent Publication No. 3-74264. However,
The compounding amount of talc disclosed in 3-74264 is 0.01 to 3.0 parts by weight based on 100 parts by weight of propylene-ethylene block copolymer. Although such a small amount of talc is suitable for film use, high rigidity cannot be expected when used as an injection molded product.

On the other hand, the applicant of the present invention has previously reported that Japanese Patent Publication No. 62-1625.
In the publication, a polypropylene-based resin composition containing an inorganic filler such as talc and a crystal nucleating agent is blended with polypropylene modified with maleic acid or the like to form a meat after molding of a polyolefin-based resin reinforced with the inorganic filler. The problem that the mechanical strength (tensile strength) after molding decreases as the thickness increases is solved. However, since a large amount of modified polypropylene having a large molecular weight is used in the examples, in this case, mechanical strength such as tensile strength can be improved, but adsorption of the crystal nucleating agent by the inorganic filler cannot be suppressed. There was a problem left.

The present invention provides a polypropylene-based resin composition containing talc and a crystal nucleating agent, in which the function of the added crystal nucleating agent is fully exerted and which is excellent in flexural modulus, heat resistance and impact resistance. It is intended to provide a composition.

[0007]

Means for Solving the Problems The present inventors have found that a polypropylene-based resin composition containing talc and a crystal nucleating agent has a specific modified polypropylene-based resin having a low molecular weight, that is, a large melt index (hereinafter referred to as MI). The inventors have found that the incorporation of a small amount of talc suppresses the adsorption of the crystal nucleating agent by talc, and has reached the present invention.

That is, the present invention relates to (A) (A-1) polypropylene resin of more than 95% by weight and 99.99% by weight or less, and (A-2) ASTM D1238.
A polypropylene having a melt index of more than 50 g / 10 minutes measured at 190 ° C. under a load of 1050 g and modified with an unsaturated carboxylic acid or its derivative or an unsaturated epoxy compound in an amount of 0.01% by weight or more and less than 5% by weight. Resin composition containing 0.001 to 5 parts by weight of (C) a crystal nucleating agent with respect to 99 to 40 parts by weight of components, 1 to 60 parts by weight of (B) talc, and 100 parts by weight of total of (A) and (B). Is.

Preferred embodiments of the present invention are shown below. (A) The resin composition according to any one of the above, wherein (A-2) is a homopolypropylene modified with maleic acid or a derivative thereof. (B) (A-2) The resin composition according to any one of the above, wherein the melt index of the modified polypropylene is higher than 300 g / 10 minutes. (C) In the component (A), (A-1) more than 97% by weight and 99.99% by weight or less, (A-2) 0.01% by weight or more and less than 3% by weight of any of the above resins Composition. (D) In the component (A), (A-1) more than 98% by weight and 99.99% by weight or less, and (A-2) 0.01% by weight or more and less than 2% by weight, any of the above resins Composition. (E) Component (A) 70 to 95 parts by weight per component (B) 5 to
30 parts by weight is included, and the sum of components (A) and (B)
Any one of the above resin compositions containing 0.01 to 3 parts by weight of the component (C) per 100 parts by weight. (F) The resin composition according to any one of the above, wherein the crystal nucleating agent is a phosphoric acid-based crystal nucleating agent.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The (A-1) polypropylene resin as the component (A) used in the present invention is not particularly limited, and any known polypropylene resin can be used. Examples of polypropylene resins include homopolypropylene, copolymers of propylene and α-olefin (including block copolymers and random copolymers)
And the like, and preferably impact-resistant propylene copolymer (ICP), for example, propylene-ethylene block copolymer. In the case of a copolymer, the amount of the copolymerization component with propylene is preferably 50% by weight or less based on the total weight of the copolymer so that the elastic modulus is not significantly lowered. Further, it may be a mixture of homopolypropylene and the above copolymer. Alternatively, rubbers such as ethylene-propylene rubber (EPR) may be contained as long as it is 50% by weight or less of the component (A-1). The method for producing the polypropylene resin is not particularly limited. The melt flow rate (MFR) of the polypropylene resin is preferably 0.01 g / 10 min or higher, more preferably 0.1 g / 10 min or higher, in order not to deteriorate the moldability. Further, in order not to reduce impact resistance and ductility, it is preferably less than 1000 g / 10 minutes, more preferably less than 300 g / 10 minutes. In addition, MFR is 230 ℃ according to ASTM D1238,
It was measured under the condition of a load of 2160 g.

In the present invention, the component (A) is as described above.
It must consist of (A-2) with (A-1). (A-2)
Is a polypropylene modified with an unsaturated carboxylic acid or its derivative or an unsaturated epoxy compound, that is, a polypropylene to which an unsaturated carboxylic acid or its derivative or an unsaturated epoxy compound is added. The polypropylene is preferably homopolypropylene, but may be a copolymer with another olefin as long as the amount of the copolymerization component is 50% by weight or less. Examples of the unsaturated carboxylic acid compound include acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, crotonic acid, sorbic acid, and the like. Examples of derivatives thereof include acid anhydrides and esters ( For example, methyl ester, ethyl ester, etc.), amide, imide and the like can be mentioned. Examples of unsaturated epoxy compounds include glycidyl acrylate, glycidyl methacrylate, or
Examples thereof include acrylamide monomers having an epoxy group disclosed in Japanese Patent Publication No. 2-51550. Such unsaturated carboxylic acid or its derivative or unsaturated epoxy compound is preferably maleic acid and its derivative, particularly maleic anhydride. The form of addition of such a monomer to polypropylene is not particularly limited, but modification by grafting is preferable. The addition ratio of the unsaturated carboxylic acid or its derivative or the unsaturated epoxy compound is preferably 0.1 of the modified polypropylene.
-10% by weight, more preferably 0.3-6% by weight. (A
-2) The modified polypropylene has a melt index (M
It is necessary that I) is above 50 g / 10 min, preferably above 300 g / 10 min. If the MI value is too small, the molecular weight is too large, so the effect of suppressing the adsorption of the crystal nucleating agent to talc is small, and the flexural modulus decreases. The upper limit of the MI value is preferably 2000 g / 10 minutes. Note that MI
Is measured at 190 ° C. under a load of 1050 g according to ASTM D1238.

The method for producing the above-mentioned modified polypropylene is not particularly limited. As a method for adding an unsaturated carboxylic acid or a derivative thereof or an unsaturated epoxy compound to polypropylene, for example, in the presence or absence of an organic peroxide which is a radical initiator, (1) at a high temperature in a nonpolar organic solvent. Solution method of addition, (2) in polar solvent,
A suspension method of adding at high temperature and high pressure, a melting method of (3) melt kneading and addition, and the like can be mentioned. Examples of organic peroxides include t-butyl peroxyacetate, t-butyl peroxybenzoate, t-butyl peroxyisopropyl carbonate, dicumyl peroxide, di-t-butyl diperoxy phthalate, and 2,5-dimethyl. -2,5-di (benzoylperoxy) hexene-3, t-butylperoxylaurate, t-butylcumyl peroxide and the like can be mentioned. Such a radical initiator is commercially available, for example, as Perhexin 25B (manufactured by NOF CORPORATION).

In the component (A), the proportion of the above-mentioned (A-1) polypropylene resin and (A-2) modified polypropylene resin is more than 95% by weight of (A-1) and 99.99% by weight.
(A-2) 0.01% by weight or more and less than 5% by weight, preferably (A-1) more than 97% by weight and 99.99% by weight.
(A-2) 0.01 wt% or more and less than 3 wt%, and more preferably (A-1) 98 wt% or more and 9 wt% or less.
9.99% by weight or less (A-2) 0.01% by weight or more and 2
% By weight. If the amount of (A-2) is too small, the effect of suppressing the adsorption of the crystal nucleating agent to talc is insufficient and the flexural modulus is low. Further, when the amount of (A-2) is too large, not only the effect is not further exhibited, but also the impact resistance is lowered.

The (B) talc used in the present invention is
The particle size and the like are not particularly limited. Also, talc is
Surface treatment may be performed.

When the surface treatment is carried out, organosilane or titanium coupling agents, various surfactants, silicone oil, various silane compounds, metal soaps, higher alcohols, polymerizable monomers, polyolefins, unsaturated carboxylic acid modification Polyolefin or the like can be used.
In particular, various silane compounds, such as a silane coupling agent and silicone oil, which have a high effect of suppressing the aggregation of talc and improving the dispersion in the composition, are preferable.

With respect to 40 to 99 parts by weight of component (A), (B)
1 to 60 parts by weight of talc is blended. Preferably (A) 70
It is 5 to 30 parts by weight with respect to (B) 5 to 95 parts by weight. If the amount of talc is too small, the flexural modulus and heat resistance of the polypropylene resin cannot be improved, and if it is too large, the impact resistance decreases.

The crystal nucleating agent (C) used in the present invention is preferably a phosphoric acid type crystal nucleating agent, a sorbitol type crystal nucleating agent, a p- (t-butyl) benzoic acid aluminum salt crystal nucleating agent and a β crystal crystal. It is a compound selected from the group consisting of nucleating agents. Examples of the phosphoric acid type crystal nucleating agent include bis (4-
t-Butylphenyl) phosphoric acid, bis (4-t-amylphenyl) phosphoric acid, bis (4-t-octylphenyl) phosphoric acid, bis (2,4-dibutylphenyl) phosphoric acid, bis (2,4- Dioctylphenyl) phosphoric acid, bis (2-t-butyl-4-methylphenyl) phosphoric acid, bis (2-t-butyl-4-ethylphenyl) phosphoric acid, bis (2-t-butyl-4,6-) Dimethylphenyl) phosphoric acid, bis (2-cyclohexyl-4-methylphenyl) phosphoric acid, bis (2-α-methylcyclohexyl-4-methylphenyl) phosphoric acid, bis (4-phenylphenyl) phosphoric acid, bis (4 -Cumylphenyl) phosphoric acid, 2,2'-methylenebis (4,6-di-t-butylphenyl) phosphoric acid, 2,2'-methylenebis (4-methyl-6-t-butylphenyl) phosphoric acid,
2,2'-methylenebis (4-ethyl-6-t-butylphenyl)
Phosphoric acid, 2,2'-methylenebis (4,6-dimethylphenyl)
Phosphoric acid, 2,2'-methylenebis (4-methyl-6-α-methylcyclohexylphenyl) phosphoric acid, 2,2'-ethylidenebis (4,6-di-t-butylphenyl) phosphoric acid, 2,2 '-Ethylidenebis (4-sec-butyl-6-t-butylphenyl) phosphoric acid, 2,2'-thiobis (4-methyl-6-t-butylphenyl)
Phosphoric acid, 2,2'-thiobis (4-t-octylphenyl) phosphoric acid, 2,2'-bis (4-methyl-6-t-butylphenyl) phosphoric acid, 2,2'-bis (4, 6-di-t-butylphenyl) phosphoric acid,
And salts thereof such as sodium salt. These may be used alone or in combination of two or more. Among them, 2,2'-methylenebis (4,6-di-t-
Sodium butylphenyl) phosphate is under the trademark ADEKA STAB NA-11, and sodium bis (4-t-butylphenyl) phosphate is under the trademark ADEKA STAB NA-10.
Both are commercially available from Asahi Denka Co., Ltd.

Examples of the sorbitol type crystal nucleating agent include dibenzylidene sorbitol, bis (p-methylbenzylidene) sorbitol, bis (p-ethylbenzylidene) sorbitol, bis (p-chlorobenzylidene) sorbitol and the like. Bis (p-methylbenzylidene) sorbitol is commercially available under the trademark Gelol MD from Shin Nippon Rika Co., Ltd., and bis (p-ethylbenzylidene) sorbitol is commercially available under the trademark NC-4 from Mitsui Toatsu Chemicals, Inc. There is.

The p- (t-butyl) benzoic acid aluminum salt crystal nucleating agent is commercially available, for example, as Shell crystal nucleating agent from Shell Chemical Co., Ltd.

Examples of the β-crystal crystal nucleating agent include alkali metal or alkaline earth metal salts of carboxylic acids (eg sodium benzoate, potassium 1,2-hydroxystearate, magnesium succinate, magnesium phthalate, etc.), dibasic bases. Alternatively, di- or triesters of tribasic carboxylic acids, aromatic sulfonic acid compounds (for example, sodium benzenesulfonate), phthalocyanine compounds (for example, phthalocyanine blue), and pigments such as quinacridone can be used. Of these, quinacridone is preferable.

In the present invention, the above-mentioned crystal nucleating agents can be used alone or in combination of two or more kinds.

The crystal nucleating agent (C) is 0.001 part by weight or more, preferably 0.005 parts by weight or more, more preferably 0.01 parts by weight or more, and 5 parts by weight per 100 parts by weight of the total of (A) and (B). The amount is not more than 3 parts by weight, preferably not more than 3 parts by weight, more preferably not more than 2 parts by weight. If the amount of the crystal nucleating agent is too small, the effect as the crystal nucleating agent is low and the flexural modulus is low. On the other hand, if the amount is too large, the impact resistance of the resin decreases.

The method for producing the resin composition of the present invention is not particularly limited, but the melt kneading method is preferable. For melt-kneading, a conventional melt-kneading device such as a single-screw kneader, a twin-screw kneader, a Banbury mixer, or the like can be used. The order of melt kneading is not particularly limited. For example, a method of melting and kneading each component at once, adding component (C) to component (A-1), and then blending component (B) with (A-2), etc. Any method such as a method of performing can be adopted. Melt kneading is preferably carried out at 160 to 300 ° C, more preferably 180 to 250 ° C.

In addition to the above-mentioned components, various conventional additives such as heat stabilizers, antioxidants and antistatic agents can be added to the resin composition of the present invention alone or in combination. During melt-kneading, these additives are added at once or separately.

[0025]

Since the resin composition of the present invention contains the modified polypropylene having a low molecular weight, the amount of the crystal nucleating agent which is considered to be adsorbed on talc can be reduced, and as a result, a small amount of the crystal nucleating agent can be obtained. A resin composition having a high flexural modulus can be obtained by adding a crystal nucleating agent. It is speculated that this is because the polar group of the modified polypropylene has an affinity with talc, and the contact between the two suppresses the adsorption of the crystal nucleating agent to talc. It is expected that such an effect of suppressing the adsorption of the crystal nucleating agent to talc will not be exhibited when the molecular weight of the modified polypropylene is too large, and will be exhibited when the MI has a low molecular weight of more than 50 g / 10 min. It was not there.

Further, it is considered that the affinity between the modified polypropylene and talc strengthens the interface between the resin and talc, improves impact resistance, and improves the balance between flexural modulus and impact resistance.

Further, since the above effect is achieved by adding a small amount of modified polypropylene, M of the resin composition is
There is little change in FR.

[0028]

The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the present invention is limited thereto.

The maleic anhydride addition rate (grafting rate) of the polypropylene modified with maleic anhydride used in the following examples was measured as follows:
From polypropylene modified with maleic anhydride (referred to as CMP), by hot pressing, a thickness of 50-100 μm
FT-IR (Fourier transform infrared absorption spectrum, Perkin Elmer (Per
kin Elmer)) was measured. Regarding the obtained IR spectrum, carbonyl bond of maleic anhydride (C = O)
The ratio of the absorbance between the peak (1780 cm ^-1 ) caused by the stretching vibration of CH and the peak (840 cm ^-1 ) caused by the CH-CH ₂ stretching vibration peculiar to isotactic polypropylene is calculated,
The graft ratio was calculated using a calibration curve prepared in advance.

Example 1 Homopolypropylene (referred to as homoPP) (manufactured by Tonen Kagaku Co., Ltd., HJ220, MFR = 20 g / 10 min: MFR
Was measured according to ASTM D1238 under the conditions of 230 ° C. and 2160 g load. The same shall apply hereinafter), modified polypropylene 1 (referred to as CMP1) (manufactured by Sanyo Kasei Co., Ltd., Umex 1001, polypropylene modified with maleic anhydride, maleic anhydride addition rate = 5.4 wt%, MI = 90).
0 g / 10 min: MI is 19 according to ASTM D1238
It was measured at 0 ° C. under a load of 1050 g. The same shall apply hereinafter), talc (Fuji Talc Industry Co., Ltd., LMS100) and crystal nucleating agent (Asahi Denka Co., Ltd., ADEKA STAB NA-11).
Was dry-blended in the proportions shown in Table 1, and then a twin-screw kneader (TEX30 type, manufactured by Japan Steel Works, Ltd., φ30 mm, L
/ D = 42), kneading temperature 200 ℃, rotation speed 300 rpm
Were melt-kneaded and pelletized under the conditions. MF of the composition
R is shown in Table 1. Test pieces for measuring physical properties were injection-molded from the pellets, and the following physical properties were measured using the test pieces.
The results are shown in Table 1. (i) Flexural modulus: measured according to ASTM D790. (ii) Izod impact strength: according to ASTM D256
The notched Izod impact strength was measured at 23 ° C.

Example 2 Pellets were prepared in the same manner as in Example 1 except that the amount of the crystal nucleating agent was changed as shown in Table 1. MF of resin composition
R is shown in Table 1. A test piece for measuring physical properties was injection-molded from the pellet in the same manner as in Example 1, and the physical property was measured using the test piece. The results are shown in Table 1.

Example 3 Instead of CMP1, modified polypropylene 2 (CMP2
Pellets were prepared in the same manner as in Example 2 except that CMP2 is homopolypropylene (manufactured by Tonen Chemical Co., Ltd., J209, MFR = 9 g / 10).
Min) 100 parts by weight, maleic anhydride (Wako Pure Chemical Industries, Ltd.)
2 parts by weight and radical initiator perhexin 25B
(Nippon Yushi Co., Ltd.) After 0.8 parts by weight of dry blend, 200 with a Labo Plastomill (Toyo Seiki Co., Ltd.)
It was manufactured by melt-kneading at 5 ° C for 5 minutes. The maleic anhydride addition rate of CMP2 was 0.7% by weight, and MI was 500 g / 10 minutes. Table 1 shows the MFR of the resin composition. A test piece for measuring physical properties was injection-molded from the pellet in the same manner as in Example 1, and the physical property was measured using the test piece. Table 1 shows the results
Shown in

Example 4 Instead of homo PP, propylene-ethylene block copolymer (referred to as BPP) (BJ5 manufactured by Tonen Kagaku KK)
40, MFR = 40 g / 10 min) was used to prepare pellets in the same manner as in Example 2. Table 1 shows the MFR of the resin composition. A test piece for measuring physical properties was injection-molded from the pellet in the same manner as in Example 1, and the physical property was measured using the test piece. The results are shown in Table 1.

Example 5 Pellets were prepared in the same manner as in Example 2 except that the amount of CMP1 was changed as shown in Table 1. MF of resin composition
R is shown in Table 1. A test piece for measuring physical properties was injection-molded from the pellet in the same manner as in Example 1, and the physical property was measured using the test piece. The results are shown in Table 1.

[0035]

[Table 1]

Comparative Example 1 Pellets were prepared in the same manner as in Example 1 except that CMP1 was not blended and the amount of homo PP was increased accordingly. Table 2 shows the MFR of the resin composition. Further, a test piece for measuring physical properties was injection-molded from this pellet in the same manner as in Example 1,
The physical properties were measured using this. Table 2 shows the results.

Comparative Example 2 Pellets were prepared in the same manner as in Example 2 except that CMP1 was not added and the amount of homo PP was increased accordingly. Table 2 shows the MFR of the resin composition. Further, a test piece for measuring physical properties was injection-molded from this pellet in the same manner as in Example 1,
The physical properties were measured using this. Table 2 shows the results.

COMPARATIVE EXAMPLE 3 The amount of CMP1 was changed as shown in Table 2, and the corresponding amount of homo P
Pellets were prepared in the same manner as in Example 2 except that the amount of P was reduced. Table 2 shows the MFR of the resin composition. Also,
Test pieces for measuring physical properties were injection-molded from the pellets in the same manner as in Example 1, and the physical properties were measured using the test pieces. Table 2 shows the results.

Comparative Example 4 Instead of CMP1, modified polypropylene 3 (CMP3
Pellets were prepared in the same manner as in Example 2 except that CMP3 is homopolypropylene (manufactured by Tonen Chemical Co., Ltd., Y201, MFR = 1g / 10).
Min) 100 parts by weight, maleic anhydride (Wako Pure Chemical Industries, Ltd.)
2 parts by weight and radical initiator perhexin 25B
After dry blending 0.2 parts by weight (manufactured by Nippon Oil & Fats Co., Ltd.), 200 with a Labo Plastomill (manufactured by Toyo Seiki)
It was manufactured by melt-kneading at 5 ° C for 5 minutes. The maleic anhydride addition rate of CMP3 was 0.6% by weight, and MI was 25 g / 10 minutes. Table 2 shows the MFR of the resin composition. A test piece for measuring physical properties was injection-molded from the pellet in the same manner as in Example 1, and the physical property was measured using the test piece. Table 2 shows the results
Shown in

Comparative Example 5 Pellets were prepared in the same manner as in Example 4 except that CMP1 was not blended and the amount of BPP was increased accordingly. Table 2 shows the MFR of the resin composition. A test piece for measuring physical properties was injection-molded from the pellet in the same manner as in Example 1, and the physical property was measured using the test piece. Table 2 shows the results.

[0041]

[Table 2]

It can be seen from Tables 1 and 2 that the addition of the (A-2) modified polypropylene resin to the (A-1) polypropylene resin improves the flexural modulus and Izod impact strength (compared with Example 1). Example 1; Example 2 and Comparative Example 2; Example 3 and Comparative Example 2; Example 4 and Comparative Example 5) In Comparative Example 3 in which the addition amount of the component (A-2) was too large, In comparison, the flexural modulus and Izod impact strength are lower. Also, the MI is small (that is, the molecular weight is large).
Comparative Example 4 using the modified polypropylene resin has lower flexural modulus and Izod impact strength than those of Examples 2 or 3.

[0043]

The resin composition of the present invention has excellent physical properties, particularly high flexural modulus and impact resistance, since the adsorption of the crystal nucleating agent by talc is suppressed. Therefore, the resin composition of the present invention is used for industrial materials such as automobiles and home appliances,
It is very useful in the field of general miscellaneous goods such as various containers and daily necessities.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display area C08L 63:10)

Claims (1)

[Claims] 1. (A) (A-1) Polypropylene resin greater than 95% by weight and 99.99% by weight or less, and (A-2) AST
According to MD 1238, the melt index measured at 190 ° C. under a load of 1050 g is more than 50 g / 10 min, and the polypropylene modified with an unsaturated carboxylic acid or its derivative or an unsaturated epoxy compound is 0.01% by weight or more and 5
0.0040 parts by weight of polypropylene component consisting of less than 100% by weight and 1 to 60 parts by weight of (B) talc, and 100 parts by weight of (A) and (B) in total, (C) crystal nucleating agent 0.00
A resin composition containing 1 to 5 parts by weight.