JPH09208795A - Resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin composition excellent in transparency, heat resistance, in addition, in flexibility and shock resistance. SOLUTION: This resin composition comprises (A) a polypropylene block copolymer containing 0.01-5wt.% of polybutene component, 1-70wt.% of polypropylene component and 25-98.99wt.% of propylene-ethylene random copolymer component in which the ethylene monomer unit amounts to 10-40mol% and the propylene to 90-60mol% and the melt index is 0.5-50g/10min, (B) polypropylene and (C) so-called high-density polyethylene of 0.94<=D<=0.97g/cm<3> . The proportions of the components A and B are 100-40wt.% and 0-60wt.%, based on their total, respectively and the amount of the component C is 1-100 pts.wt. per 100 pts.wt. of the components A+B.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a resin composition having excellent transparency, heat resistance, flexibility and impact resistance.

[0002]

2. Description of the Related Art As a method for improving the flexibility and impact resistance of polypropylene resins, crystalline polypropylene is used as an ethylene propylene copolymer rubber, ethylene butene copolymer rubber, high density polyethylene, low density polyethylene, straight chain low A method of adding density polyethylene or the like is generally known. However, it has been difficult for a composition having such a composition to simultaneously satisfy the transparency, heat resistance, flexibility and impact resistance of a molded product.

On the other hand, in JP-A-5-331328, a polypropylene resin is prepared by incorporating a specific propylene block copolymer containing a polybutene component, a polypropylene component and a propylene-ethylene copolymer component into polypropylene. Has been successfully improved in flexibility and impact resistance.

[0004]

However, even in the above method, the transparency and the heat resistance are still insufficient, and there is a problem that the use thereof is limited in the applications requiring the transparency and the heat resistance. there were. Therefore, the present invention provides a propylene-based resin composition having improved transparency and heat resistance without impairing the flexibility and impact resistance of the composition of the above-mentioned specific propylene-based block copolymer and polypropylene. The purpose is to do.

[0005]

DISCLOSURE OF THE INVENTION As a result of repeated research to solve the above problems, the present inventors have found that a more specific polyethylene is added to the above composition of the specific propylene block copolymer and polypropylene. By blending
The inventors have found that a resin composition excellent in transparency and heat resistance while maintaining flexibility and impact resistance can be obtained, and completed the present invention.

That is, the present invention relates to (A) a polybutene component,
A block copolymer containing a polypropylene component and a propylene-ethylene random copolymer component, wherein the polybutene component is 0.01 to 5 wt%, the polypropylene component is 1 to 70 wt%, and the propylene-ethylene random copolymer component. Is 25 to 98.99% by weight, the propylene-ethylene random copolymer component contains 10 to 40 mol% of ethylene-based monomer units and 90 to 60 mol% of propylene-based monomer units, A propylene block copolymer (B) polypropylene having a melt index of 0.5 to 50 g / 10 min and (C) a polyethylene having a density of more than 0.94 g / cm ^{3 and not} more than 0.97 g / cm ³ , (A) is 100 to 40% by weight in a proportion of the total amount of (A) and (B),
(B) is 0 to 60% by weight, and (C) is 1 to 100 parts by weight based on 100 parts by weight of the total of (A) and (B).

In the present invention, the propylene block copolymer (hereinafter, simply referred to as "block copolymer") which is the raw material of (1) is a polybutene component, a polypropylene component and a propylene-ethylene copolymer component. Consists of. When the polybutene component is replaced with another component, for example, a polyethylene component, the polymer particles obtained by polymerization have poor solidification property and fluidity at high temperature, and cannot be the object of the present invention.

In the block copolymer used in the present invention, the polybutene component, the polypropylene component and the propylene-ethylene random copolymer component each have a component ratio of 0.01 to 5% by weight of the polybutene component and 1 to 70 of the polypropylene component. %, And the propylene-ethylene random copolymer component is 25 to 98.99% by weight.

In the present invention, the polybutene component is essential for improving the particle properties of the copolymer particles. Especially,
When the content of polypropylene component is low, for example, 30
When it is at most 10% by weight, the resulting copolymer particles tend to stick, but even in such a case, the presence of the polybutene component makes it possible to obtain copolymer particles having good fluidity. When the polybutene component is less than 0.01% by weight,
When the copolymer particles obtained by the polymerization are deposited and left to stand, they are solidified by the load, and further 50 to 50
When the temperature is 70 ° C., the fluidity is remarkably inferior, which is not preferable. On the other hand, when the polybutene component exceeds 5% by weight, the fluidity of the block copolymer is rather lowered, which is not preferable. The proportion of the polybutene component is preferably in the range of 0.04 to 3% by weight in consideration of the better fluidity of the block copolymer particles.

If the polypropylene component is less than 1% by weight, the block copolymer particles are likely to stick. On the other hand, if the proportion of polypropylene component exceeds 70% by weight,
The flexibility and impact resistance of the molded product are deteriorated, and it is not possible to obtain the initial desired composition. The polypropylene component is most preferably in the range of 3 to 60% by weight in consideration of flexibility, mechanical strength, heat resistance and impact resistance.

Further, the ethylene-propylene random copolymer component is 25 to 98.99% by weight. When the content of the above components is less than 25% by weight, the low temperature impact resistance is poor and 98.9
If it exceeds 9% by weight, mechanical properties such as strength and heat resistance of the molded product are deteriorated, which is not preferable. The ethylene-propylene random copolymer component is preferably in the range of 40 to 97% by weight, considering low temperature impact resistance, mechanical strength and heat resistance.

The content ratio of each of the ethylene-based monomer unit and the propylene-based monomer unit in the propylene-ethylene random copolymer component is 10 to 40 mol% of the ethylene-based monomer unit. It is preferably 15 to 35 mol%. Monomer units based on propylene are 90-60 mol%, preferably 85-65
Mol%. When the content ratio of ethylene-based monomer units is less than 10 mol% and the content ratio of propylene-based monomer units exceeds 90 mol%, the resulting film has sufficient flexibility and low-temperature impact resistance. It is not desirable. On the other hand, when the content ratio of the monomer units based on ethylene exceeds 40 mol% and the content ratio of the monomer units based on propylene is less than 60 mol%, the transparency of the obtained resin composition becomes insufficient. Not preferable.

Further, the block copolymer used in the present invention has a melt index of 0.5 to 50 g / 10 m.
in. Melt index is 0.5g / 10mi
When it is less than n, the moldability becomes poor and 50 g / 10 mi
When it exceeds n, the impact resistance improving effect is deteriorated, which is not preferable. Considering the moldability and impact resistance improving effect of the obtained resin composition, the melt index is 1.
It is preferably in the range of 0 to 30 g / 10 min.

The block copolymer used in the present invention is
When the molecular weight distribution represented by the ratio of the weight average molecular weight and the number average molecular weight by gel permeation chromatography is 1.5 to 3.5, moldability and bleeding of low molecular weight components can be prevented. Preferred for.

The polybutene component in the block copolymer used in the present invention is used to prevent the particles of the block copolymer from solidifying,
In order to improve the fluidity at high temperature, the isotacticity is preferably 0.90 or more. Poly 1-
The isotacticity of butene was measured by C-NMR, and the polymer journal (Polymer J.
) This is a value of mm when attribution is made based on pages 716 to 726 of Volume 16 (1984).

The block copolymer used in the present invention includes:
Any one or more of polybutene component, polypropylene component, propylene-ethylene random copolymer component,
As long as the physical properties of the resin composition are not impaired, other α-olefins may be contained in a small amount, for example, in the range of 5 mol% or less by copolymerization.

The block copolymer used in the present invention is a so-called block copolymer molecular chain in which at least two kinds of polybutene component, polypropylene component and propylene-ethylene random copolymer component are arranged in one molecular chain. It is considered that the polybutene component, the polypropylene component, and the propylene-ethylene random copolymer component are mixed with the molecular chains of the individual so finely that they cannot be achieved by mechanical mixing.

The block copolymer used in the present invention can be obtained as a powder having excellent fluidity by polymerization. This is surprising considering that a conventional propylene-ethylene random copolymer having an ethylene content similar to that of the block copolymer used in the present invention is obtained in a lump form due to sticking of particles to each other.

The block copolymer used in the present invention may be obtained by any method. The method that is particularly preferably adopted is as follows.

That is, the following components A and B, or C and / or D A. Titanium compound B. Organoaluminum compound C.I. Electron donor D. In the presence of an iodine compound represented by the general formula (i) RI (i) (wherein R is an iodine atom or an alkyl group having 1 to 7 carbon atoms or a phenyl group), 0.1 to 0.1% of propylene is added. 500g polymer / g
-Preliminary polymerization is carried out to obtain a titanium compound to obtain a catalyst-containing prepolymer, and then 1-butene is polymerized and propylene is polymerized in the presence of the catalyst-containing prepolymer to obtain a mixture of propylene and ethylene. A method in which random copolymerization of the mixture is sequentially carried out to obtain a high-molecular weight powdery substance and further decomposition with an organic peroxide is preferable.

Such a manufacturing method is disclosed in JP-A-5-28703.
As described in detail in Japanese Patent No. 5 and the like, in the present invention, the block copolymer is preferably produced according to the method. In that case, in the polymerization of the propylene-ethylene random copolymer component, the copolymerization is based on propylene-based monomer units of 60 to 90 mol%, preferably 65.
~ 85 mol% and 10 to 10 ethylene-based monomer units
It is necessary to mix propylene and ethylene in an amount of 40 mol%, preferably 15 to 35 mol%. For that purpose, it is usually preferable to select the mixing ratio of propylene and ethylene such that the ethylene concentration in a gas state is 3 to 14 mol%, preferably 3.5 to 12 mol%.

Next, the component (B) of the resin composition of the present invention is polypropylene. The polypropylene in the present invention is a homopolymer of propylene, 90 mol% or more of propylene and an α-olefin other than propylene, for example,
Ethylene, 1-butene, 1-pentene, 1-hexene,
A random copolymer of 1-heptene, 4-methyl-1-pentene, or the like and at least 10 mol% of 1 or more is preferably used.

Further, the component (C) of the resin composition of the present invention has a density of more than 0.94 g / cm ³ and 0.97 g / cm ^3.
It is polyethylene of cm ³ or less. Such polyethylene is generally referred to as high density polyethylene, and in addition to ethylene homopolymers, copolymers of ethylene and α-olefins having 3 to 10 carbon atoms are usually used. Ethylene component 99.99 to 99.5% by weight, α having 3 to 10 carbon atoms
-It is preferred that the olefin is a copolymer of 0.01 to 0.5% by weight. The α-olefin is preferably 1-butene, 1-hexene, 1-octene or the like. Considering the transparency, heat resistance, flexibility and impact resistance of the resin composition of the present invention, the density of polyethylene as the component (C) is more than 0.94 g / cm ³ and 0.96 g / cm ^3.
It is preferably not more than cm ³ . Here, the density is 0.
When it is less than 94 g / cm ^3, the heat resistance is slightly lowered.

The above-mentioned (A) of the resin composition of the present invention,
The blending amounts of the components (B) and (C) are 40 to 100% by weight, preferably 50 to 100% by weight, of the component (A) in the total amount of the components (A) and (B). The content of the component (B) in the total of (A) and (B) is 60 to 0% by weight, preferably 50 to 0% by weight. When the amount of the component (A) is less than 40% by weight and the amount of the component (B) exceeds 60% by weight, the mechanical strength is improved, but the flexibility and impact resistance are deteriorated, which is not preferable.

The component (C) is 1 to 100 parts by weight, preferably 2 to 80 parts by weight, based on 100 parts by weight of the total of (A) and (B). When the amount of component (C) is less than 1 part by weight, the effect of improving transparency and heat resistance is insufficient, and when it exceeds 100 parts by weight, the effect of transparency is rather unfavorable.

The above-mentioned resin composition is appropriately compounded with other resins and known additives such as antioxidants, light stabilizers, antistatic agents, crystal nucleating agents, etc. within a range that does not impair the effect. be able to.

[0027]

The resin composition of the present invention has excellent flexibility,
It has impact resistance and transparency. It also has excellent heat resistance and a high Vicat softening point. Therefore, it can be used in various fields where these physical properties are required. For example, as film applications, wrap film, shrink film, staple film, sealant film, sizing film, adhesive tape, masking film, agricultural film, medical film, cosmetic film, etc., as sheet, stationery sheet, occlusal sheet As a molded product such as a desk mat, an agricultural sheet, and a skin material, it can be preferably used for a cosmetic box, a cosmetic bag, a packaging box, a packaging bag, a food container, a miscellaneous goods component, a toy, and the like.

[0028]

EXAMPLES The present invention will be described below with reference to examples and comparative examples, but the present invention is not limited to these examples.

The measuring method used in the following examples will be described.

1) The number average molecular weight (Mn), the weight average molecular weight (Mw) and the ratio of the molecular weight of 10,000 or less were measured by GPC (gel permeation chromatography).
Water-based GPC-150C was used at 35 ° C. with O-dichlorobenzene as a solvent. The column used is TSK gel GMH6-HT manufactured by Tosoh Corporation, gel size 10 to 15 μm. The comparative curve has a weight average molecular weight of 950, 2900, 10,000, 50,000, 49.8 as a standard sample.
It was made using 10,000, 2.7 million and 6.75 million polythrene.

2) Method for measuring respective proportions of ethylene-based monomer unit and propylene-based monomer unit in propylene-ethylene random copolymer component and method for measuring polybutene component proportion ¹³ C-NMR spectrum chart is shown. It was calculated using.
That is, the respective proportions of the ene-based monomer units and the propylene-based monomer units in the propylene-ethylene random copolymer component are determined by first determining the polymer (P
Polymer, Vol. 29 (1988), page 1848, peak assignments were determined, and then Macromolecules 10th.
Volume (1977) p. 773, the respective proportions of ethylene-based monomer units and propylene-based monomer units were calculated. Then, the weight and ratio of the polybutene component were calculated from the integrated intensity ratio of the peak derived from methyl carbon in the monomer unit and the peak caused by methyl carbon in the polybutene component based on propylene.

3) Measurement of isotacticity of poly 1-butene ¹³ C-NMR measurement, Polymer Journal (Polymer J.) Vol. 16 (1984) 71
Based on pages 6-726.

4) Melt Index (MI) The melt index was measured according to JIS K7210.

5) Flexural modulus The flexural modulus was measured according to JIS K7203.

6) Izod impact value (notched, 23
C) Measured according to JIS K7110.

7) Haze value Measured according to JIS K6714.

8) Bigat softening point Measured according to JIS K7206 (load 250
g).

Production Examples 1-1 to 1-3 (Preliminary Polymerization) A glass autoclave reactor having an internal volume of 1 liter equipped with a stirrer was sufficiently replaced with nitrogen gas, and then 400 ml of heptane was charged. Reactor temperature 2
Keeping at 0 ° C., diethylene glycol dimethyl ether 0.18 mmol, iodide 22.7 mmol, diethyl aluminum chloride 18.5 mmol, and titanium trichloride (Marubeni Solvay Chemical Co., Ltd. “TOS-17”) 2
After adding 2.7 mmol, propylene was continuously introduced into the reactor for 30 minutes so that 3 g per 1 g of titanium trichloride was obtained. The temperature during this period was kept at 20 ° C. After stopping the supply of propylene, the inside of the reactor was sufficiently replaced with nitrogen gas, and the obtained titanium-containing polypropylene was washed with purified heptane four times. As a result of the analysis, 2.9 g of propylene was polymerized per 1 g of titanium trichloride.

(Main Polymerization) Step 1: Polymerization of 1-butene A stainless steel autoclave reactor having an internal volume of 1 liter equipped with a stirrer was sufficiently replaced with nitrogen gas, and then 40 ml of heptane was charged. Reactor internal temperature 20 ℃
Maintained at 18.15 mmol of diethylaluminum chloride, diethyl glycol dimethyl ether 0.18
Mmol, 22.7 mmol of ethyl iodide, and 22.7 mmol of titanium-containing polypropylene obtained by prepolymerization as titanium trichloride were added, and 1-butene was continuously added for 2 hours so as to be 15 g per 1 g of titanium trichloride. It was introduced into the reactor. The temperature during this period was kept at 20 ° C. 1
After the supply of butene was stopped, the inside of the reactor was replaced with nitrogen gas to obtain a titanium-containing poly-1-butene polymer. As a result of the analysis, 14 g of 1-butene was polymerized per 1 g of titanium trichloride.

Step 2: Polymerization of Propylene and Copolymerization of Propylene-Ethylene To 1 liter of N-substituted autoclave, 1 liter of liquid propylene and 0.70 mmol of diethylaluminum chloride were added, and the internal temperature of the autoclave was adjusted to 7
The temperature was raised to 0 ° C. Add 0.087 mmol of titanium-containing poly-1-butene polymer as titanium trichloride, and add 6
Polymerization of propylene was carried out for 0 minutes. During this time, hydrogen was not used. Then, the internal temperature of the autoclave was rapidly increased to 55 ° C.
At the same time ethylaluminum sesquichloride ethoxide when the temperature decreases _{(Et 3 Al 2 (OEt)} 3) 0.50 mmol and a mixed solution of methyl methacrylate 0.014 mmol was added to the ethylene supplied, ethylene gas concentration in the gas phase 7
Copolymerization of propylene and ethylene was carried out at 55 ° C. for 120 minutes so that the molar ratio was adjusted to 55%. During this period, the ethylene gas concentration was maintained at 7 mol% while confirming with a gas chromatograph. During this time, hydrogen was not used. After the polymerization was completed, unreacted monomers were purged to obtain a particulate polymer. No adhesion was observed in the polymerization tank or on the stirring blade. The yield was 140 g, and the polymerization ratio of all polymers was 7370 g-
Polymer / g-titanium trichloride.

As a result of separately polymerizing only propylene, titanium trichloride 1 was obtained at 70 ° C. for 60 minutes.
1030 g of propylene was polymerized per g.
As a result, the polybutene component in the block copolymer was 0.
It can be seen that 19% by weight and 14% by weight of polypropylene component. The results are shown in Table 1.

Next, to 30 kg of the obtained polymer, 1,3-bis- (t-butylperoxyisopropyl) benzene was added as an organic peroxide in a ratio shown in Table 2, and an antioxidant was added. Add 0.1 phr and mix for 1 minute with a Henschel mixer, then use a φ65 mm single screw extruder to
Melt-kneading was performed at 0 ° C. to obtain pellets.

Production Examples 2 and 3 In the polymerization of 1-butene of Production Example 1, the polymerization amount of 1-butene was 3 g and 50 g per 1 g of titanium trichloride, and the copolymerization of propylene and ethylene was conducted at an ethylene gas concentration of The same operation as in Production Example 1 was performed except that the amounts were 3.5 mol% and 8 mol%, respectively. The results are shown in Table 1.
Further, in the same manner as in Production Example 1, melt kneading was carried out with the amounts of organic peroxides shown in Table 2.

Production Example 4 Production of propylene in Production Example 1 was repeated except that the propylene was polymerized at 60 ° C. for 10 minutes and the copolymerization of propylene and ethylene was adjusted to an ethylene gas concentration of 12 mol%. The same operation as in Example 1 was performed. In a separate polymerization experiment, the polymerization rate of propylene at this time was 240 g-PP / g.
It was titanium trichloride. The results are shown in Table 1. Further, in the same manner as in Production Example 1, melt kneading was carried out with the amounts of organic peroxides shown in Table 2.

Production Example 5 In the polymerization of propylene of Production Example 1, the polymerization of propylene was carried out at 70 ° C. for 5 hours, and the copolymerization of propylene and ethylene was adjusted to an ethylene gas concentration of 13 mol%.
The same operation as in Production Example 1 was performed except that the treatment was performed at 5 ° C. for 120 minutes. In a separate polymerization experiment, the polymerization ratio of propylene at this time was 5100 g-PP / g-titanium trichloride. The results are shown in Table 1. Further, in the same manner as in Production Example 1, melt kneading was carried out with the amounts of organic peroxides shown in Table 2.

Comparative Production Example 1 The same operation as in Production Example 1 was carried out except that 1-butene was not polymerized in the main polymerization of Production Example 1. Table 1 shows the results
It was shown to. Further, in the same manner as in Production Example 1, the amount of organic peroxide shown in Table 2 was melt-kneaded.

Comparative Production Example 2 The same operation as in Production Example 1 was carried out except that in the main polymerization of Production Example 1, the polymerization of 1-butene was changed to 600 g per 1 g of titanium trichloride. The results are shown in Table 1. Production Example 1
In the same manner as above, melt kneading was carried out with the amount of the organic peroxide shown in Table 2.

Comparative Production Examples 3 and 4 Production Example 1 except that in the polymerization of propylene of Production Example 1, propylene and ethylene were copolymerized so that the ethylene gas concentrations were 20 mol% and 2 mol%, respectively. The same operation was performed. The results are shown in Table 1. Further, in the same manner as in Production Example 1, the amount of organic peroxide shown in Table 2 was melt-kneaded.

[0049]

[Table 1]

[0050]

[Table 2]

Examples 1 and 2 Pellets of the block copolymers obtained in Production Examples 1-1 and 1-2 and polyethylene copolymerized with ethylene and 1-octene (density 0.945 g / cm ³ , 1- Octene content of 0.38% by weight, * 1) in the table was mixed in the ratio shown in Table 3, and the cylinder temperature was 230 with a 50 ton injection molding machine.
Bending and Bigatt softening point test pieces, Izod impact test pieces, and a 1 mmt 3 haze measuring plate were prepared under the conditions of ℃ and mold temperature of 40 ℃. These test pieces were allowed to stand for 48 hours at room temperature and then measured. The results are shown in Table 3.

Example 3 The pellets of the block copolymer obtained in Production Example 1-2, the propylene homopolymer (* A in the table) and the polyethylene used in Example 1 were mixed in the proportions shown in Table 3, Example 1
The test was performed in the same manner as described above. The results are shown in Table 3.

Examples 4 to 9 The pellets of the block copolymer obtained in Production Examples 1-2, 1-3, 2, and 3 and the polyethylene used in Example 1 are shown in Table 3.
The mixture was mixed in the proportion shown in, and the test was conducted in the same manner as in Example 1. The results are shown in Table 3.

Example 10 Pellets of the block copolymer obtained in Production Example 3 and polyethylene obtained by copolymerizing ethylene and 1-butene (density 0.955 g / cm ³ , 1-octene content 0.12% by weight) , * 2) in the table were mixed in the proportions shown in Table 3, and Example 1 was mixed.
The test was performed in the same manner as described above. The results are shown in Table 3.

Examples 11 to 13 Pellets of the block copolymer obtained in Production Example 3 and random polypropylene having an ethylene content of 3 mol% (*
B) and the polyethylene used in Example 10 were mixed in the ratio shown in Table 3, and the test was conducted in the same manner as in Example 1. The results are shown in Table 3.

Examples 14 and 15 The pellets of the block copolymer obtained in Production Examples 4 and 5 were mixed with the polyethylene used in Example 1 in the proportions shown in Table 3 and tested in the same manner as in Example 1. I went. The results are shown in Table 3.

Comparative Example 1 The pellets of the block copolymer obtained in Production Example 1-2 were tested in the same manner as in Example 1. The results are shown in Table 3.

Comparative Example 2 Pellets of the block copolymer obtained in Production Example 3 and random polypropylene having an ethylene content of 3 mol% (* in the table)
B) and the polyethylene used in Example 1 were mixed in the proportions shown in Table 3 and tested in the same manner as in Example 1. The results are shown in Table 3.

Comparative Example 3 The pellets of the block copolymer obtained in Production Example 3 were tested in the same manner as in Example 1. The results are shown in Table 3.

Comparative Example 4 The block copolymer pellets obtained in Production Example 3 and the polyethylene used in Example 1 were mixed in the proportions shown in Table 3,
A test was performed in the same manner as in Example 1. The results are shown in Table 3.

Comparative Examples 5 to 8 The block copolymer pellets obtained in Comparative Production Examples 1 to 4 and the polyethylene used in Example 1 were mixed in the proportions shown in Table 3, and the same method as in Example 1 was carried out. The test was conducted at. The results are shown in Table 3.

[0062]

[Table 3]

[0063]

[Table 4]

Claims (1)

[Claims] 1. A block copolymer comprising (A) a polybutene component, a polypropylene component, and a propylene-ethylene random copolymer component, wherein the polybutene component is 0.01 to 5% by weight and the polypropylene component is 1 to 70. Wt%, propylene-ethylene random copolymer component is 2
5 to 98.99% by weight, and the propylene-ethylene random copolymer component contains 10 to 40 mol% of ethylene-based monomer units and 9 to propylene-based monomer units.
Contains 0 to 60 mol% and has a melt index of 0.5 to 5
Polypropylene block copolymer (B) polypropylene having 0 g / 10 min and (C) density of 0.94
It is made of polyethylene having a content of more than g / cm ^{3 and not} more than 0.97 g / cm ³ , and the proportion of (A) in the total amount of (A) and (B) is 100 to 40% by weight and (B) is 0. ~ 6
The resin composition is 0% by weight, and (C) is 1 to 100 parts by weight based on 100 parts by weight of the total of (A) and (B).