JPH06336539A - Ethylene resin composition - Google Patents

Abstract

PURPOSE:To obtain an ethylene resin composition which is lightweight and excellent in heat-insulation properties, has good transparency, tensile fatigue resistance, and impact break resistance, is resistant to marring, has excellent film properties, and is the most suitable for agricultural houses, agricultural curtains, etc. CONSTITUTION:This resin composition comprises 85-99wt.% ethylene/4 C or higher alpha-olefin copolymer produced by using a metallocene catalyst and having a melt flow rate of 0.01-10g/10min and a density of 0.925g/cm<3> or below and 15-1wt.% inorganic compound having at least one atom selected from among Si, Al, Mg and Ca.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention is light, excellent in heat retention, excellent in transparency, tensile tear resistance, impact tear resistance, scratch resistant, and excellent film suitability for agriculture. The present invention relates to an ethylene-based resin composition which is most suitable for applications such as a house and an agricultural curtain.

[0002]

2. Description of the Related Art Conventionally, polyvinyl chloride, ethylene / vinyl acetate copolymer film, etc. have been used as greenhouse coating materials used for greenhouse cultivation such as greenhouses and curtains for agriculture. Since polyvinyl chloride is excellent in heat retention, transparency, toughness, etc., it has been widely used in this kind of field until recently. However, in the polyvinyl chloride film, since the plasticizer contained in the film bleeds to the surface of the film during use, dust adheres to the film and the light transmittance of the film is impaired over time. It has the drawback of hindering temperature rise. Further, if the product is incinerated after use, harmful hydrogen chloride gas is generated, which makes disposal difficult. Further, since the polyvinyl chloride resin itself has a large specific gravity, the film is heavy, and it is a very laborious work to spread it on the framework of a greenhouse for several tens of meters. Therefore, this has led to a demand for light and easy-to-handle materials with the aging of agricultural workers.

On the other hand, ethylene-vinyl acetate copolymer is
As with general polyolefin resins, dust is unlikely to adhere,
It is superior to polyvinyl chloride in that no harmful gas is generated even when incinerated. However, since the film is not as transparent as a polyvinyl chloride film, it has low light transmittance, and the strength of the film is insufficient. It is easy to break due to such reasons, and after about a year, it becomes necessary to re-attach and it is difficult to use for a long time. Therefore, in order to prevent such breakage, a method of increasing the thickness of the film is usually adopted, but since the thickness of a standard house film or the like in the market is around 100 μm, Although there is a demand for thinning, it was difficult to use ethylene / vinyl acetate copolymer to satisfy the above mechanical properties. Further, the ethylene / vinyl acetate copolymer film is used for spreading the film, rubbing the film comrades during the work such as rolling up the film in the summer or during the day, and rubbing the framework of the greenhouse. It also had a drawback that the surface of the film was easily scratched. Furthermore, in order to impart heat retention, it is disclosed that various inorganic substances are added to the film to improve the temperature, which is disclosed in JP-B-47-13853 (silica powder) and JP-B-3.
-50791 (magnesium compound), Japanese Patent Publication Sho 6
It is known in Japanese Patent Publication No. 2-31744 (hydrotalcite), but when these inorganic substances are added, the surface of the film becomes more easily scratched, and such a problem is also a major problem, and improvement is desired. Was there.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to solve the above problems, to be light, excellent in heat retention, good in transparency, tensile tear resistance, impact tear resistance and scratch resistant. Further, it is to provide an ethylene-based resin composition which is an optimum material as an agricultural film, having an excellent film suitability capable of thinning.

[0005]

[Means for Solving the Problems]

[Summary of the Invention] As a result of intensive research conducted by the present inventors to obtain an ethylene-based resin composition which is superior in performance to conventional agricultural films and which is most suitable as an agricultural film material, According to the present invention, it was found that the object of the present invention can be achieved by blending an ethylene / α-olefin copolymer having properties and an inorganic compound having specific properties in a specific amount ratio. Has been completed. That is, the ethylene-based resin composition of the present invention has a melt flow rate (MFR) of 0.01 to 10 g / 10 min and a density of 0.925 g / cm ³ produced using a component (A): a metallocene catalyst. 85-99% by weight of the following ethylene / α-olefin copolymer having 4 or more carbon atoms, and (B): an inorganic compound containing at least one atom selected from Si, Al, Mg, and Ca 15-1 It is characterized by being composed of weight%.

[Detailed Description of the Invention] [I] Component (1) Ethylene / α-olefin copolymer having 4 or more carbon atoms (component (A)) (a) Properties Ethylene resin composition of the present invention The ethylene / α-olefin copolymer having 4 or more carbon atoms, which is the component (A) constituting (1), preferably has the following physical properties (1) to (3).

Melt Flow Rate (MFR) Ethylene used in the present invention, α having 4 or more carbon atoms
-The olefin copolymer is M according to JIS-K7210.
FR (melt flow rate) is 0.01 to 10 g / 10 min, preferably 0.1 to 10.
It exhibits physical properties of 5 g / 10 minutes, particularly preferably 0.5 to 3 g / 10 minutes. If the MFR is larger than the above range, molding becomes unstable. If the MFR is smaller than the above range, the resin pressure at the time of molding becomes too large,
It is not practical because it causes a decrease in product production.

Density Ethylene used in the present invention, α having 4 or more carbon atoms
-The olefin copolymer has a density according to JIS-K7112 of 0.925 g / cm ³ or less, preferably 0.87 to
0.915 g / cm ³ , particularly preferably 0.88-0.
It shows 910 g / cm ³ . If the density is higher than the above range, the transparency will deteriorate. On the other hand, if the density is lower than the above range, blocking may occur due to stickiness on the film surface, and the film may not be put to practical use.

Peak of Elution Curve Obtained by Elevated Temperature Elution Fractionation (TREF) The ethylene / α-olefin copolymer having 4 or more carbon atoms used in the present invention has an increased temperature elution fractionation (TREF: Te).
There is one or more, preferably one peak in the elution curve obtained by mperature Rising Elution Fractionation, and the temperature of the main peak is 100 ° C. or lower, preferably 8
It shows 5 ° C. or lower, particularly preferably 75 ° C. or lower. Measurement of elution curve by temperature rising elution fractionation Temperature rising elution fractionation
Ionation: TREF)
nal of Applied Polymer Science, Vol 26, 4217-4231
(1981) ”based on the principle described below. First, the polymer to be measured is completely dissolved in the solvent. Thereafter, it is cooled to form a thin polymer layer on the surface of the inert carrier. Such a polymer layer is the one that is easily crystallized inside (the side close to the surface of the inert carrier)
In addition, a material that is difficult to crystallize is formed on the outside. Next, when the temperature is increased continuously or stepwise, in the low temperature step, the amorphous portion in the target polymer composition, that is, the one having a large degree of branching of the short chain branch possessed by the polymer elutes, and the temperature rises as well. The one with a low degree of branching gradually elutes, and finally the linear part with a little branching elutes, and the measurement ends. It is possible to detect the concentration of the elution component at each temperature and to see the composition distribution of the polymer from the graph drawn by the elution amount and the elution temperature.

50 by temperature rising elution fractionation (TREF)
Elution amount at 50 ° C. The elution amount at 50 ° C. (Y:% by weight relative to the total amount of component A) of the ethylene / α-olefin copolymer having 4 or more carbon atoms used in the present invention by temperature rising elution fractionation (TREF) is It is optimal that the conditions 1) and 2) are satisfied. 1) When the density (D) of component A is less than 0.91 g / cm ³ , Y (wt%) ≦ −4500D + 4105 ≦ 10
0, preferably Y ≦ −4650D + 4238 ≦ 100. 2) When the density (D) of the component A is 0.91 g / cm ³ or more, Y (% by weight) ≦ 10, preferably Y ≦ 7.

Q value Gel permeation chromatography (G) of such ethylene / α-olefin copolymer having 4 or more carbon atoms
The Q value (weight average molecular weight / number average molecular weight) determined by PC) is 4 or less, preferably 3 or less, and particularly preferably 2.5 or less. If the Q value is larger than the above value, the tensile strength becomes small, which is not preferable.

(B) Production of ethylene / α-olefin copolymer having 4 or more carbon atoms Metallocene catalyst Such an ethylene / α-olefin copolymer having 4 or more carbon atoms is disclosed in JP-A-58-19309. 59-952
No. 92, No. 60-35005, No. 60-35006
No. 60-35007, No. 60-35008, No. 60-35009, No. 61-130341, JP-A-3-163088, European Patent Application Publication No. 4,204,436. US Patent No. 5,05
5,438 and International Publication WO 91/042
57 and the like, particularly metallocene / alumoxane catalysts, or metallocene compounds and the metallocene compounds described below, for example, as disclosed in WO92 / 01723 and the like. Using a catalyst composed of a compound that reacts with and forms a stable anion, the main component of ethylene and the secondary component of carbon number 4
This is a method of copolymerizing with the above α-olefin.

The above-mentioned compound which reacts with a metallocene compound to form a stable anion is an ionic compound or an electrophilic compound formed from an ion pair of a cation and an anion, and is stable when reacted with a metallocene compound. It becomes an ion to form a polymerization active species. Among these, the ionic compound is represented by the following general formula (I). General formula (I) [Q] ^{m +} [Y] ^m- (m is an integer of 1 or more) In the above formula, Q is a cation component of the ionic compound, and is a carbonium ion, tropylium cation, ammonium cation, or oxo. Examples thereof include a aluminum cation, a sulfonium cation, and a phosphonium cation. Furthermore, a cation of a metal, an cation of an organic metal, or the like, which is easily reduced by itself, is also included. These cations are listed in Special Table 1
Not only cations that can give a proton as disclosed in JP-A-501950 but also cations that do not give a proton may be used. Specific examples of these cations include triphenyl carbonium, diphenyl carbonium, cycloheptatrienium, indenium,
Triethylammonium, tripropylammonium,
Tributylammonium, N, N-dimethylanilium dipropylammonium, dicyclohexylammonium, triphenylphosphonium, trimethylphosphonium, tri (dimethylphenyl) phosphonium, tri (methylphenyl) phosphonium, triphenylsulfonium, triphenyloxonium, triethyloxonium Pyrylium, silver ion, gold ion, platinum ion, copper ion, palladium ion, mercury ion, ferrocenium ion and the like. Y is an anion component of the ionic compound, which is a component that reacts with the metallocene compound to form a stable anion, and is an organic boron compound anion, an organic aluminum compound anion, an organic gallium compound anion, an organic phosphorus compound anion, an organic compound. Examples thereof include an arsenic compound anion and an organic antimony compound anion.

Specifically, tetraphenylboron, tetrakis (3,4,5-trifluorophenyl) boron, tetrakis (3,5-di (trifluoromethyl) phenyl)
Boron, tetrakis (3,5-di (t-butyl) phenyl) boron, tetrakis (pentafluorophenyl) boron, tetraphenylaluminum, tetrakis (3,3)
4,5-trifluorophenyl) aluminum, tetrakis (3,5-di (trifluoromethyl) phenyl) aluminum, tetrakis (3,5-di (t-butyl) phenyl) aluminum, tetrakis (pentafluorophenyl) aluminum, Tetraphenylgallium, tetrakis (3,4,5-trifluorophenyl) gallium, tetrakis (3,5-di (trifluoromethyl) phenyl) gallium, tetrakis (3,5-di (t-butyl) phenyl) gallium, Tetrakis (pentafluorophenyl) gallium, tetraphenylphosphorus, tetrakis (pentafluorophenyl) phosphorus, tetraphenylarsenic,
Examples thereof include tetrakis (pentafluorophenyl) arsenic, tetraphenylantimony, tetrakis (pentafluorophenyl) antimony, decaborate, undecaborate, carbadodecaborate, and decachlorodecaborate.

The electrophilic compound, which is known as a Lewis acid compound, is a compound which reacts with a metallocene compound to form a stable anion to form a polymerization active species. Examples thereof include metal oxides known as solid acids. Specific examples include magnesium halides and Lewis acidic inorganic compounds.

The α- olefin minor component as the α- olefin having 4 or more carbon α-
Olefin, for example 1-butene, 1-pentene, 1-
Hexene, 1-octene, 1-heptene, 4-methylpentene-1, 4-methylhexene-1,4,4-dimethylpentene-1 and the like can be mentioned. Among these α-olefins, the number of carbon atoms is preferably 4 to 12, and particularly preferably 6 to
10 to 1 or 2 or more kinds of α-olefin 2 to 60% by weight, preferably 5 to 50% by weight, and ethylene 40 to 98
It is preferred to copolymerize with wt.%, Preferably 50 to 95 wt.%.

Copolymerization Examples of the method for polymerizing this ethylene / α-olefin copolymer having 4 or more carbon atoms include a gas phase method, a slurry method, a solution method and a high pressure ionic polymerization method. Among these, the solution method and the high-pressure ionic polymerization method are preferable, and the high-pressure ionic polymerization method that can exert the effect of the present invention is particularly preferable. The high-pressure ionic polymerization method is described in JP-A-5
6-18607 and JP-A-58-225106, the pressure is 200 kg / cm ² or more,
Preferably 300-2,000 kg / cm ² , temperature is 1
25 ° C or higher, preferably 130 to 250 ° C, especially 150
It is a continuous process for producing an ethylene-based polymer, which is carried out under reaction conditions of up to 200 ° C.

(2) Inorganic Compound (Component (B)) The inorganic compound of component (B) constituting the ethylene resin composition of the present invention contains at least one atom selected from Si, Al, Mg and Ca. It is an inorganic oxide, an inorganic hydroxide, an inorganic composite compound or the like contained. Specifically, SiO ₂ ,
Al ₂ O ₃ , MgO, CaO, Al (OH) ₃ , Mg
(OH) ₂ , Ca (OH) ₂ , and the following general formula (I
Examples thereof include compounds represented by I) and substances called hydrotalcites in their fired products. General formula (II) M ²⁺ _1-x Al _x (OH) ₂ (A ⁿ⁻ ) _{x / n} · mH ₂ O (In the formula, M ²⁺ is a group selected from the group consisting of Mg, Ca and Zn. It represents a valent metal ion, and x and m satisfy the following conditions: 0 <x <0.5, 0 ≦ m ≦ 2) Of these, hydrotalcites are preferred, and general formulas are particularly preferred. It is a fired product of a compound represented by (II) (usually fired at 200 to 300 ° C.). These inorganic compounds can be used alone or in combination of two or more. It is desirable that these inorganic compounds have an average particle size of 10 μm or less, preferably 5 μm or less, and particularly preferably 3 μm or less. If the average particle size is too large, the transparency of the film is impaired, which is not preferable.

(3) Other Components (Component (C)) The ethylene resin composition of the present invention contains an ethylene polymer, for example, a high pressure method, in order to improve the moldability in molding the film. Low density polyethylene, ethylene / vinyl acetate copolymer, ethylene / ethyl acrylate copolymer, ethylene / acrylic acid ester copolymer, and the like. Among them, high pressure method low density polyethylene is preferably 1 to 35% by weight, preferably 3 to 25%. % By weight, particularly preferably 7 to 2
It is preferable to add 0% by weight. Here, the high-pressure low-density polyethylene has an MFR of 0.1 to 20 g / 10.
Min, preferably 0.5 to 10 g / 10 min, particularly preferably 1 to 5 g / 10 min, and the density (D) is 0.915 to.
0.930 g / cm ³ , preferably 0.918 to 0.9
27 g / cm ³ , particularly preferably 0.919 to 0.92
3 g / 10 min, ME (constant speed extrusion rate: 3 g / min) is 1.3 or more, preferably 1.6 or more, particularly preferably 1.8 or more, and melt tension (MT) is MT. The amount is 1.5 g or more, preferably 2.5 g or more, and particularly preferably 5 g or more. As the high-pressure low-density polyethylene, those having the above properties can be appropriately selected and used from commercially available products, and particularly preferably the reaction temperature is 2
It is desirable to use a high-pressure low density polyethylene produced by an autoclave method at a temperature of 20 ° C. or higher and a reaction pressure of 1,700 kg / cm ² or less. Further, the ethylene-based resin composition of the present invention, auxiliary components that are commonly used in resin compositions, such as antioxidants, heat stabilizers, light stabilizers,
Dispersant, lubricant, anti-blocking agent, pigment, colorant,
Antifogging agent, antistatic agent, ultraviolet absorber, light stabilizer, nucleating agent,
Additives such as a neutralizer and a slip agent can be added.

[II] Blending Ratio The blending ratio of the above-mentioned component (A) and component (B) in the ethylene resin composition of the present invention is such that the component (A): component (B) = 85 parts by weight in the composition. %: 15% by weight to 99% by weight: 1% by weight, preferably component (A): component (B) = 90% by weight: 10
% -98% by weight: 2% by weight, particularly preferably components
(A): Component (B) = 92% by weight: 8% by weight to 97% by weight:
It is 3% by weight. If the blending ratio of the component (B) in the above composition is too large, the transparency of the film will decrease. Also the ingredients
If the blending ratio of (B) is too low, the level of heat retention as an agricultural film will be insufficient.

[III] Blend The ethylene-based resin composition of the present invention has the same ethylene / carbon number 4 component A component as in the usual method for producing a resin composition.
It can be produced by blending the above α-olefin copolymer with the inorganic compound of component B.
Specifically, the component (B) and a small amount of the component (A), and if necessary, further added with other additives, a twin-screw kneading extruder,
Melt and knead using a Banbury mixer, kneader, etc., then pelletize to produce a master batch of component (B), and use this pelletized master batch of component (B) with a large amount of component (A) and Henschel mixer. It is usual to produce a resin composition by thoroughly mixing with a blender such as.

[IV] Molding / Processing The ethylene resin composition of the present invention can be molded into a film by T-die molding, inflation molding or the like. The film made of this composition can be used as a single layer, or can be a multilayer film with other polyolefin resin.

[0023]

EXAMPLES The present invention will be described in more detail below by describing experimental examples consisting of examples and comparative examples. [I] Physical Property Measuring Method and Evaluation Method Physical property measurement and evaluation in Examples and Comparative Examples were carried out by the following methods. (1) Physical property measurement methods (a) MFR: JIS-K7210 (b) Density: JIS-K7112

(C) Elution curve: Temperature rising elution fractionation under the following measurement conditions (Temperature Rising Elution Fractio)
nation: TREF) was measured. To create an elution curve, first, the weight fraction of the eluate at each elution temperature (° C) is integrated to obtain the integrated elution amount. Plot the elution temperature on the horizontal axis and the integrated elution amount on the vertical axis to draw an integrated elution curve. This integrated elution curve is differentiated by temperature to obtain the differential elution amount. Next, plot the elution temperature on the horizontal axis and the differential elution amount on the vertical axis to draw a differential elution curve. The differential elution curve was plotted on the abscissa axis at 89.3 mm per 100 ° C. elution temperature and the ordinate axis at 76.5 mm per differential amount of 0.1. Machine type: Mitsubishi Petrochemical Co., Ltd. CFC T150A Solvent: o-dichlorobenzene Flow rate: 1 ml / min Measured concentration: 4 mg / ml Injection volume: 0.4 ml Column: Showa Denko AD80M / S 3 cooling rates: 1 ° C / min

(D) Q value: The Q value was determined by measuring the weight average molecular weight and the number average molecular weight by GPC under the following measurement conditions. Model: Waters Model 150C GP
C Solvent: o-dichlorobenzene Flow rate: 1 ml / min Temperature: 140 ° C Measurement concentration: 2 mg / ml Injection volume: 20 μl Column: Showa Denko AD80M / S 3 bottles

(E) Melt tension (melt tension, Melt T
ension: MT): Capillograph 1-B manufactured by Toyo Seiki Co., Ltd., at a test temperature of 190 ° C. and an extrusion speed of 1 cm / min, the take-up speed when taking out the extruded resin was gradually increased, and the resin filament was sheared. The time stress.

(2) Evaluation method (a) Haze (HAZE): conforming to JIS-K7105 (b) Elemendorff tear strength: conforming to JIS-Z1702 (c) Tensile strength / elongation: conforming to JIS-K6781 (d) Punching impact strength: Measurement is performed using a device according to JIS-P8134. Measure the thickness of the measurement part of the film, fix the film on the sample table, shake the pendulum,
Impact sample. The energy (kg · cm) required for this penetration failure is read from the scale plate, and the value is divided by the sample thickness (cm) to obtain the value. (e) Heat retention: The formed film was attached to a mini-house having a height of 60 cm and a length of 1.5 m, the temperature inside the house at 4:00 am and the temperature outside the house were measured, and the temperature difference was observed. . This was carried out for 10 days, and the average value was calculated. (f) Scratch property: Two film-forming films are stacked, the surfaces are rubbed, and some scratches on the rubbed surface are visually observed. If there are few scratches, it is indicated by ○, and if there are many, it is indicated by ×.

[II] Experimental Example 1 (1) Production of ethylene / α-olefin copolymer having 4 or more carbon atoms (component (A)) (a) Preparation of catalyst Preparation of catalyst It carried out by the method described in JP130314. That is, to the complex ethylenebis (4,5,6,7-tetrahydroindenyl) zirconium dichloride 2.0 mmol, Toyo Stoufer's methylalumoxane was added 1,000 times by mole to the above complex, and diluted with toluene to 10 liters. Then, a catalyst solution was prepared. (b) Polymerization A mixture of ethylene and hexene-1 was fed to a stirring autoclave-type continuous reactor having an internal volume of 1.5 liters so that the composition of hexene-1 was 75% by weight, and 145 while keeping the pressure at 1,000 kg / cm ^3.
The reaction was carried out at a temperature of ° C. After the reaction, MFR is 2g
/ 10 minutes, the density is 0.909 kg / cm ³ , and the Q value is 1.
9, TREF elution curve has one peak, peak temperature is 6
An ethylene / hexene-1 copolymer (component (A)) having an elution amount of 4.8% by weight at 8 ° C and 50 ° C was obtained.

(2) Production of ethylene resin composition First, as an inorganic substance of the component (B), a hydrotalcite calcined product manufactured by Kyowa Chemical Co., Ltd. (trade name: DHT-4A-
2, the average particle size 0.4μm), the above ethylene / carbon number 4
3 for the above α-olefin copolymer (component (A))
The mixture was granulated at a molding temperature of 200 ° C. by a twin-screw extruder so as to have a ratio of 0% by weight to obtain a masterbatch. This masterbatch was mixed with the ethylene / α-olefin copolymer having 4 or more carbon atoms (component (A)) at a ratio of 80:20 and granulated with a 40 ^mmφ single-screw extruder to obtain pellets. .

(3) Film molding Using this pellet, 40 m manufactured by Tomy Machine Industry Co., Ltd.
m ^φ inflation molding machine, molding temperature is 180 ℃,
Inflation molding was performed at a screw rotation speed of 70 rpm to obtain a film. The film was evaluated. The evaluation results are shown in Table 1.

Example 2 The resin composition was prepared in the same manner as in Example 1 and the film was formed and evaluated in the same manner as in Example 1 except that the thickness of the film at the time of forming was changed. The results are shown in Table 1.

Example 3 In addition to the components (A) and (B), the component (C) had an MFR of 4
g / 10 min, density 0.92 kg / cm ³ , ME (constant speed extrusion rate: measured at 3 g / min) 2.4, melt tension (Melt T
The film was molded and evaluated in the same manner as in Example 1 except that high-pressure low-density polyethylene having a tension of 9.4 g was blended as shown in Table 1. The results are shown in Table 1.

Comparative Example 1 Instead of the component A, Mitsubishi Polyethylene EV manufactured by Mitsubishi Yuka Co., Ltd.
Using AX303, a molding temperature of C1 / C2 / die = 40 ^mmφ inflation molding machine manufactured by Mitsubishi Heavy Industries, Ltd.
Mold the film at 120 ° C / 160 ° C / 145 ° C,
evaluated. The evaluation results are shown in Table 3.

Examples 4 and 5 and Comparative Examples 2 and 3 Films were formed and evaluated in the same manner as in Example 1 except that the components (A) and (B) having the physical properties shown in Tables 2 and 3 were used.
The results are shown in Tables 2 and 3.

Example 6 and Comparative Example 4 Film was formed and evaluated in the same manner as in Example 1 except that the blending ratio of the component (B) was changed. The results are shown in Tables 2 and 3.

Example 7 Instead of the component (B) of Example 1, an uncalcined hydrotalcite product (trade name: D manufactured by Kyowa Chemical Co., Ltd.) was used as an inorganic substance.
Film was formed and evaluated in the same manner as in Example 1 except that HT-4A and average particle size 0.4 μm) were used. The results are shown in Table 2.

[0037]

[Table 1]

[0038]

[Table 2]

[0039]

[Table 3]

[0040]

EFFECT OF THE INVENTION The ethylene resin composition of the present invention, which is formed into a film, is superior in strength to conventional films. Therefore, it is possible to make the film thinner, which is light and yet Excellent in heat retention, tensile tear resistance, impact tear resistance, transparency is good, and it is not easily scratched, so it is extremely useful as a material for agricultural films used outdoors such as agricultural houses and agricultural curtains. It is a thing.

Claims (1)

[Claims] 1. Component (A): ethylene / carbon number 4 having a melt flow rate (MFR) of 0.01 to 10 g / 10 minutes and a density of 0.925 g / cm ³ or less, produced using a metallocene catalyst. It is characterized by comprising 85 to 99 wt% of the above α-olefin copolymer and 15 to 1 wt% of component (B): an inorganic compound containing at least one atom selected from Si, Al, Mg and Ca. And an ethylene resin composition.