JP2790318B2 - Resin composition and molded article using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Industrial Field of the Invention The present invention comprises a polyolefin resin (I), a thermoplastic polyvinyl alcohol resin (II), and a saponified ethylene-vinyl ester copolymer (III). The present invention relates to a resin composition and a resin molded article using the resin composition, which has excellent antistatic properties, drip properties and heat retention.

B. Prior Art Polyolefin-based resins have excellent transparency and flexibility, and have relatively high film strength. Therefore, polyolefin resins are used in various applications as resin molded products and films.

However, polyolefin-based resins generally have a drawback that they have a large chargeability and are poor in dropping properties and heat retention. For this reason, dust and dirt adhere to the surface of the resin molded product, and the transparency decreases.For films used in agricultural houses, tunnel houses, etc., water droplets adhere to the surface and the transparency decreases, and heat retention occurs. Inferior sex has become a fundamental problem.

In order to solve these problems, polyolefins are polyvinyl alcohol resins, ionomer resins and ethylene-
A method in which one kind of polymer selected from vinyl alcohol copolymers is blended and modified (for example, Japanese Patent Publication No. 46-37668).
Japanese Patent Application Laid-Open No. H11-27139) has been proposed, but a satisfactory solution in this area has been found to be still satisfactory because of insufficient heat retention, loss of transparency, and reduction of moldability. It is not at present.

Polyolefin-based resins and polyvinyl alcohol have inherently poor compatibility, so that a blended product having excellent physical properties has not been obtained, and even if blended, the transparency and strength are significantly reduced.

There is a disclosure of a resin composition in which a saponified ethylene-vinyl acetate copolymer is blended when blending a polyolefin-based resin and polyvinyl alcohol (JP-A-52-125553), which is described in this application. Since polyvinyl alcohol has a high degree of saponification (88 to 98.5 mol%), it does not have thermoplasticity, and even if a saponified ethylene-vinyl acetate copolymer is blended, polyvinyl alcohol is in the initial particle state in the molded product. It just exists,
The obtained resin molded product had a decrease in transparency and mechanical strength. Further, since the amount of the saponified ethylene-vinyl acetate copolymer is large, the excellent effect of the polyvinyl alcohol resin cannot be sufficiently exhibited.

C. Problems to be Solved by the Invention The present invention imparts an antistatic property, a drip property and a heat retention property to a resin composition without significantly impairing the transparency, moldability and mechanical strength of the polyolefin resin composition. The present invention relates to a cured resin composition.

D. Means for Solving the Problems As a result of intensive studies, the inventors of the present invention have found that polyolefin resin (I) (hereinafter sometimes abbreviated as component (I)), thermoplastic polyvinyl alcohol Resin (II) (hereinafter sometimes abbreviated as component (II)) and a saponified ethylene-vinyl ester copolymer (II) having an ethylene content of 50 to 95 mol% and a saponification degree of 40 to 100 mol%.
By melt-blending I) (hereinafter sometimes abbreviated as component (III)) at an appropriate ratio, the transparency, moldability and mechanical strength of the polyolefin-based resin molded product are easily impaired. The present inventors have found that a molded product obtained by imparting an antistatic property, a dropping property and a heat retaining property to a resin composition can be obtained, and the present invention has been completed. That is, the resin composition according to the present invention is a polyolefin-based resin (I) and a polyvinyl alcohol-based resin (II) and an ethylene-vinyl ester copolymer having an ethylene content of 50 to 95 mol% and a saponification degree of 40 to 100 mol%. A saponified product (III), and the polyvinyl alcohol resin (II) used has thermoplasticity,
And 0.2 to 50 parts by weight of the polyvinyl alcohol-based resin (II) relative to 100 parts by weight of the polyolefin-based resin (I) (hereinafter, part by weight is abbreviated as part) in the resin composition;
It is a resin composition in which the saponified vinyl ester copolymer (III) is 1 to 9 parts with respect to 100 parts of the polyvinyl alcohol resin (II). Preferably, the component (II) is used in an amount of 1 to 20 parts per 100 parts of the component (I), and the component (III) is used in an amount of 1 to 9 parts based on 100 parts of the component (II).

When the content of the polyvinyl alcohol-based resin (II) in the resin composition of the present invention is less than 0.2 part with respect to 100 parts of the polyolefin-based resin (I), the present invention imparts antistatic properties, drip properties and heat retaining properties. Effect is small and cannot be used in the present invention.

When the content of the polyvinyl alcohol-based resin (II) in the resin composition of the present invention is more than 50 parts with respect to 100 parts of the polyolefin-based resin (I), the mechanical performance and appearance of the resin composition are remarkably deteriorated. Cannot be used.

The role of the saponified ethylene-vinyl ester copolymer (III) in the resin composition of the present invention is to provide excellent dispersibility when melt-blending the polyvinyl alcohol-based resin (II) with the polyolefin-based resin (I), and In addition to making the mechanical performance and transparency of the product extremely good, the polyolefin resin (I) and the polyvinyl alcohol resin (I
It acts to give strong adhesion at the interface of I).

The amount of the saponified ethylene-vinyl ester copolymer (III) in the resin composition was determined by adjusting the amount of the polyvinyl alcohol-based resin (I
I) The particle size of the polyvinyl alcohol-based resin (II) dispersed in the resin composition is set to be less than 1 per 100 parts, and the mechanical performance and the transparency are reduced, whereby the effect of the present invention appears. Therefore, it cannot be used in the present invention.

The amount of the saponified ethylene-vinyl ester copolymer (III) in the resin composition was determined by adjusting the amount of the polyvinyl alcohol-based resin (I
I) When the amount is larger than 9 parts per 100 parts, the size of the particles of the polyvinyl alcohol-based resin (II) dispersed in the resin composition becomes small, and a decrease in mechanical performance and transparency can be prevented. Dispersed polyvinyl alcohol resin (II)
Cannot be used in the present invention because sufficient antistatic properties and dropping properties are not exhibited because a large amount of is present inside the resin composition.

The polyolefin-based resin (I) in the present invention refers to an olefin polymer having 2 to 20 carbon atoms, particularly a solid homopolymer or copolymer of ethylene, propylene or butene. They include, for example, low-density polyethylene, medium-density polyethylene, high-density polyethylene, polypropylene homopolymer and ethylene-prolene copolymer, vinyl acetate, vinyl acrylate, butene, hexene or
-Polyethylene copolymerized with -methyl-1 pentene, etc., polypropylene copolymerized with ethylene, butene, hexene or 4-methyl-1 pentene, modified polypropylene blended with a rubber-based polymer, poly-1-butene, polyhexene, poly- Examples thereof include 4-methyl-1-pentene, an ionomer resin, a modified polyolefin obtained by reacting the above-mentioned polyolefin with maleic anhydride, and an oxidized polyolefin.

The polyvinyl alcohol resin (II) referred to in the present invention is:
It has thermoplasticity and preferably has a melt index value at a temperature of 190 ° C. (2.16 kg according to the method of JIS-K-6760).
The value measured at a temperature of 190 ° C under a load of. Hereinafter, it may be abbreviated as MI value. ) Is 0.1 to 100 (g / 10 minutes), more preferably 0.5 to 50 (g / 10 minutes). When the melt index value at 190 ° C is less than 0.1 (g / 10 minutes), the dispersion state of the polyvinyl alcohol-based resin in the resin molded product becomes poor even when the hot melt blending is performed, and the resin molded product becomes transparent. Performance and mechanical strength may be reduced,
Melt index value at 190 ℃ is 100 (g / 10min)
If it is larger, the polyvinyl alcohol-based resin starts to exhibit tackiness, which may cause dust and the like to easily adhere to the surface of the resin molded product.

The degree of saponification and the degree of polymerization of the polyvinyl alcohol-based resin (II) in the present invention are not particularly limited, but have the above-mentioned thermoplasticity and impart antistatic properties, drip properties and heat retention to the resin molded product. The degree of saponification of the polyvinyl alcohol-based resin is preferably from 40 to 80 mol%, more preferably from 50 to 70 mol%, in order to more exert the effect of the present invention.
The mole percentage is good, and the degree of polymerization is preferably from 50 to 1,000, more preferably from 100 to 1,000.

The polyvinyl alcohol-based resin (II) used in the present invention is produced by hydrolysis or alcoholysis of a polyvinyl ester. The polyvinyl ester in the present invention includes a homopolymer of vinyl ester, a copolymer of vinyl esters, and a copolymer of vinyl ester and another ethylenic monomer. As the vinyl ester, a vinyl ester of a fatty acid having 1 to 25 carbon atoms is preferable, and a vinyl ester of a fatty acid having 1 to 20 carbon atoms is more preferable. Further, those obtained by modifying the polymer terminal with a chain transfer agent can also be used.

Representative examples of the vinyl ester include vinyl acetate, vinyl propionate, t-butyl vinyl ester, and vinyl versatate. Among them, vinyl acetate produced on an industrial scale is particularly desirable.

The ethylenic monomer to be copolymerized with the vinyl ester is not particularly limited as long as it can be copolymerized with the vinyl ester. For example, α-olefins such as propylene, n-butene, isobutene and 1-hexadecene, styrene and α Styrenes such as methylstyrene, halogen-containing monomers such as vinyl chloride, vinylidene chloride and tetrafluoroethylene, and carboxylic acids such as (meth) acrylic acid, fumaric acid, itaconic acid, crotonic acid, maleic acid and maleic anhydride. Containing monomers and salts thereof, methyl (meth) acrylate, ethyl (meth) acrylate,
N-butyl (meth) acrylate, 2 (meth) acrylate
-Hydroxyethyl, (meth) acrylates such as 2-ethylhexyl (meth) acrylate, stearyl (meth) acrylate, dimethyl fumarate, dimethyl itaconate, dimethyl maleate, monomethyl maleate and dimethyl crotonate. Esters, vinyl ethers such as methyl vinyl ether, ethyl vinyl ether, butyl vinyl ether, lauryl vinyl ether and stearyl vinyl ether; sulfonic acid groups such as vinyl sulfonic acid, allyl sulfonic acid, methallyl sulfonic acid and 2-acrylamido-2-methylpropane sulfonic acid Containing monomers and salts thereof, (meth) acrylamide, N, N-dimethyl (meth) acrylamide, N-methylol (meth) acrylamide, Nt-butoxy (meth) acrylamide, Amide group-containing monomers such as -t-octyl (meth) acrylamide and N-vinylpyrrolidone; amino group-containing monomers such as dimethylaminoethyl (meth) acrylamide; (meth) acrylamido-propyl-trimethylammonium chloride A quaternary ammonium salt-containing monomer such as vinylhydroxysilane and a monomer having a silyl group such as 3-trimethoxysilylpropyl (meth) acrylate; allyl alcohol;
Examples thereof include hydroxyl group-containing monomers such as dimethylallyl alcohol and isopropenyl alcohol, and acetyl group-containing monomers such as allyl acetate, dimethylallyl acetate and isopropenyl acetate.

The saponified ethylene-vinyl ester copolymer (III) used in the present invention is produced by hydrolysis or alcoholysis of a copolymer of ethylene and vinyl ester. Ethylene-vinyl ester copolymer (III) referred to in the present invention
The term "copolymer" includes a copolymer of ethylene and one or more kinds of different vinyl esters, and a multi-component copolymer of ethylene, a vinyl ester and an ethylenic monomer other than ethylene. The vinyl ester has 1 to 1 carbon atoms.
Vinyl esters of 25 fatty acids are preferable, and have 1 to 20 carbon atoms.
Vinyl esters of fatty acids are more preferred. The ethylenic monomer other than ethylene is not particularly limited as long as it can be copolymerized with a vinyl ester. For example, α-olefins such as propylene, n-butene, isobutene and 1-hexadecene, styrene and α-methylstyrene Such as styrenes, vinyl chloride, vinylidene chloride and halogen-containing monomers such as tetrafluoroethylene,
Carboxylic acid-containing monomers such as (meth) acrylic acid, fumaric acid, itaconic acid, crotonic acid, maleic acid and maleic anhydride and salts thereof, methyl (meth) acrylate, ethyl (meth) acrylate, (meth) (Meth) acrylates such as n-butyl acrylate, 2-hydroxyethyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, stearyl (meth) acrylate, dimethyl fumarate, dimethyl itaconate, and maleic acid Esters such as dimethyl methacrylate, monomethyl maleate and dimethyl crotonate; vinyl ethers such as methyl vinyl ether, ethyl vinyl ether, butyl vinyl ether, lauryl vinyl ether and stearyl vinyl ether; vinyl sulfonic acid, allyl sulfonic acid, methallyl sulfonic acid and 2- Acrylamide-2-methylpropane monomers and their salts of the sulfonic acid group-containing, such as sulfonic acid, (meth) acrylamide, N, N-dimethyl (meth)
Acrylamide, N-methylol (meth) acrylamide, Nt-butoxy (meth) acrylamide, Nt
Amide group-containing monomers such as octyl (meth) acrylamide and N-vinylpyrrolidone, amino group-containing monomers such as dimethylaminoethyl (meth) acrylamide, and (meth) acrylamido-propyl-trimethylammonium chloride and the like. Monomers containing quaternary ammonium salts, monomers containing silyl groups such as vinylhydroxysilane and -3-trimethoxysilylpropyl (meth) acrylate, and hydroxyl groups containing allyl alcohol, dimethylallyl alcohol and isopropenyl alcohol And acetyl group-containing monomers such as allyl acetate, dimethyl allyl acetate and isopropenyl acetate.

The role of the saponified ethylene-vinyl ester copolymer (III) of the present invention is that the polyolefin-based resin (I) and the polyvinyl alcohol-based resin (II) have an appropriate affinity and have a suitable affinity. The purpose is to significantly improve the dispersibility of the polyvinyl alcohol-based resin (II) in I), reduce the size of the particle phase, and prevent a decrease in mechanical properties and transparency. If the desired range of the saponified ethylene-vinyl ester copolymer (III) is shown, the component (I)
40 to 100 mol% of the vinyl acetate moiety of II) is saponified, and the ethylene content of component (III) is 50 to 95 mol%, more preferably 70 to 90 mol%, and the component (III) )) Is 0.1 to 100 (g / 10 minutes), and more preferably 0.5 to 50 (g / 10 minutes).

As a method for blending a polyolefin-based resin (I), a polyvinyl alcohol-based resin (II), and a saponified ethylene-vinyl ester copolymer (III) to obtain the resin composition of the present invention, That is, they are mixed by melt-kneading and mixing using an extruder, a roll kneader, a Banbury mixer or the like. There is no particular restriction on the blending order either, and a method of blending three kinds of resins simultaneously or a method of blending two kinds of resins and then blending the remaining resin may be used. Furthermore, the molding method of the resin molded product is to perform melt molding using the blend obtained by the above method, but each component is not melt-blended in advance, but is charged separately to a molding machine and directly in the molding machine. A method of melting or injection molding immediately after melt blending is also possible.

The resin composition in the present invention is not particularly limited as long as it is a resin composition obtained by blending the above components (I), (II) and (III). For example, a single-layer film, another resin film, a composite film bonded to paper or metal foil, a fiber-reinforced film having short fibers or long fibers present inside the film, a nonwoven fabric, a sheet, a pipe-like material, Molded articles having complicated shapes such as rod-shaped articles, plate-shaped articles, and front panels of automobiles are exemplified.

The method for molding a resin molded product in the present invention is not particularly limited as long as it is a method in which a product obtained by blending the components (I), (II) and (III) is plasticized by heating.

For example, extrusion molding, injection molding, inflation molding,
A press molding method or a blow molding method may, for example, be mentioned.

Examples of applications of the resin composition and the resin molded product of the present invention include agricultural films with improved heat retention and dripability, polyolefin resin films with improved antistatic properties, polyolefin-based films with improved printability, and improved adhesion. Polyolefin-based film, but the present invention is not limited thereto.

If necessary, an antioxidant, an ultraviolet absorber, a plasticizer, a lubricant, a coloring agent, a filler, a release agent, a heat stabilizer, and the like can be further added to the resin composition of the present invention.

Many other high molecular compounds can also be blended as long as the effects of the present invention are not impaired.

E. Examples Hereinafter, the present invention will be described more specifically with reference to Examples, but the present invention is not limited to these Examples.

In the following Examples and Comparative Examples, mechanical strength, transparency, antistatic property, dropping property and heat retention were evaluated by the following methods.

(1) Mechanical strength A sheet with a thickness of about 100 microns is made by melt extrusion film forming, and the humidity is controlled for one week at a temperature of 20 ° C and a humidity of 65% RH.
Using an autograph (jacket interval 50 mm, tensile strength 50
(0 mm / min) Evaluation was made by measuring the tensile strength of the sheet.

(2) Transparency For the same sheet as the one for which mechanical strength was measured, JIS-
Evaluation was made by measuring haze by the method of K-7105.

(3) Antistatic Property The same sheet as that for which the mechanical strength was measured was conditioned for one week at a temperature of 20 ° C. and a humidity of 65% RH, and evaluated by measuring the surface electric resistance.

(4) Dropping property Evaluation was made by measuring the contact angle with water of the same sheet as that for which the mechanical strength was measured.

(5) Heat retention A film having a thickness of 20 microns was prepared by melt extrusion film formation, and the film was evaluated by measuring the transmittance of infrared light of the film. (The lower the transmittance of infrared light, the better the heat retention.) Examples 1 to 3 Polyvinyl alcohol-based copolymer obtained by copolymerizing sodium allyl sulfonate with 0.4 mol% at a polymerization degree of 340, a saponification degree of 61 mol%, and an NI value of 47. Resin, low-density polyethylene having an MI value of 7.2 (hereinafter abbreviated as LDPE) and a saponified ethylene-vinyl acetate copolymer having a saponification degree of the vinyl ester portion of 99 mol%, an ethylene content of 78 mol%, and an MI value of 44. Dry blending was performed at the blending ratios shown in Table 1, and the mixture was supplied to an extruder having a single-screw full-flight type screw and blended and pelletized at 180 ° C.

Then, the pellet was supplied to an extrusion film forming machine equipped with a T-die, and extruded at 180 ° C. to obtain a film-shaped resin molded product. The obtained film-shaped resin molded product was evaluated for mechanical strength, transparency, antistatic property, dripping property, and heat retention property by the above-described method. The results are shown in Table 1 together with the conditions for producing the resin molded product. FIG. 1 shows the infrared light transmittance spectrum of the film-shaped resin molded product having a thickness of 20 μm obtained in Example 2.

Examples 4 to 10 Polyvinyl alcohol-based resins having a degree of polymerization of 650, a degree of saponification of 67 mol% and an MI value of 1.7, the same as those used in Examples 1 to 3
LDPE and a saponified ethylene-vinyl acetate copolymer having a degree of saponification of the vinyl acetate portion of 96-99 mol% and an ethylene content of 90-74 mol% were prepared at blend ratios shown in Table 1 respectively. Dry blending and pelletization were carried out in the same manner as in Examples 3 to 3, and a film-shaped resin molded product was obtained by extrusion film formation at 190 ° C. The evaluation results are shown in Table 1 together with the conditions for producing the resin molded product.

Examples 11 to 12 The same polyvinyl alcohol-based resin and LD as in Examples 4 to 10
A saponified ethylene-vinyl acetate copolymer having a PE and ethylene content of 78 mol% and a degree of saponification of the vinyl acetate portion of 83 or 59 mol% was prepared in the same manner as in Examples 4 to 10 at the blending ratios shown in Table 2. A film-like resin molded product was obtained by dry blending, pelletizing, and extrusion film formation by the method. The results are shown in Table 2 together with the conditions for producing the resin molded product.

Comparative Example 1 A film-shaped resin molded product was obtained by melt-extruding the LDPE used in Examples 1 to 12 alone. The evaluation results are shown in Table 2 together with the conditions for producing the resin molded product.

Comparative Example 2 The LDPE used in Examples 1 to 12 and the polyvinyl alcohol-based resin used in Examples 4 to 12 were dry-blended and pelletized in the same manner as in Examples 4 to 12 at the blending ratios shown in Table 2. Then, a film-shaped resin molded product was obtained by melt extrusion film formation. The evaluation results are shown in Table 2 together with the conditions for producing the resin molded product. FIG. 2 shows the infrared light transmittance spectrum of the film-shaped resin molded product having a thickness of 20 μm obtained in Comparative Example 1.

Comparative Example 3 LDPE used in Examples 1 to 12, polyvinyl alcohol resin used in Examples 4 to 12, and ethylene content of 78
Dry-blending, pelletizing, and melt-extrusion film-forming of an ethylene-vinyl acetate copolymer (unsaponified) having an MI value of 2.8 and a blend ratio shown in Table 1 in the same manner as in Examples 4 to 12 respectively. As a result, a film-shaped resin molded product was obtained. The evaluation results are shown in Table 2 together with the conditions for producing the resin molded product.

Comparative Example 4 LDPE used in Examples 1 to 12, polymerization degree 1750, saponification degree
98.5 mol% of polyvinyl alcohol and ethylene-vinyl acetate copolymer saponified with an ethylene content of 44 mol% and a saponification degree of 99 mol% were dried at the blending ratios shown in Table 2 in the same manner as in Examples 4 to 12. A film-shaped resin molded product was obtained by blending, pelletizing, and melt-extruding a film. The evaluation results are shown in Table 2 together with the conditions for producing the resin molded product.

Comparative Example 5 LDPE used in Examples 1 to 12, polymerization degree 650, saponification degree 6
7 mol% polyvinyl alcohol and ethylene content 7
4 mol% and a saponified ethylene-vinyl acetate copolymer having a degree of saponification of 99 mol% were dry blended and pelletized in the same manner as in Examples 4 to 12 at blending ratios shown in Table 2.
A film-shaped resin molded product was obtained by melt extrusion film formation. The evaluation results are shown in Table 2 together with the conditions for producing the resin molded product.

Comparative Example A Example except that the blending ratio shown in Table A was changed
Dry blending, pelletization, and melt extrusion film formation were performed under the same conditions as in 11, to obtain a film-shaped resin molded product. The evaluation results are shown in Table-A together with the conditions for preparing the resin composition.

Comparative Example B In place of the saponified ethylene-vinyl acetate copolymer used in Comparative Example A, an ethylene content of 45 mol% and a saponification degree of 83 were used.
Except that a saponified ethylene-vinyl acetate copolymer was used in the same manner as in Example 11, except that a mol%, saponified MI value of 5 g / 10 minutes was used. A molded product was obtained. The evaluation results are shown in Table-A together with the conditions for preparing the resin composition.

Examples 13 to 17 A polyvinyl alcohol resin having a degree of polymerization of 650, a degree of saponification of 67 mol% and an MI value of 1.7, an ethylene-vinyl acetate copolymer having a vinyl acetate content of 14% by weight (hereinafter abbreviated as EVA) and vinyl acetate A saponified ethylene-vinyl acetate copolymer having a degree of saponification of 96 to 99 mol% and an ethylene content of 90 to 74 mol%, each having the blend ratio shown in Table 3 in the same manner as in Example 1. , And the mixture was extruded at 200 ° C to obtain a film-like resin molded product. The evaluation results are shown in Table 3 together with the conditions for producing the resin molded product.

Examples 18 to 20 The same polyvinyl alcohol-based resin as in Examples 13 to 17, EV
Examples 13 to 17 were saponified ethylene-vinyl acetate copolymers having A and an ethylene content of 78 mol% and a degree of saponification of the vinyl acetate portion of 83, 59 or 43 mol%, respectively, as shown in Table 3. By dry blending, pelletizing, and melt-extruding a film in the same manner as described above, a film-shaped resin molded product was obtained. The evaluation results are shown in Table 3 together with the conditions for producing the resin molded product.

Comparative Example 6 EVA used in Examples 13 to 20 was melt-extruded into a single film to obtain a film-like resin molded product. The evaluation results are shown in Table 4 together with the conditions for producing the resin molded product.

Comparative Example 7 The EVA used in Examples 13 to 20 and the polyvinyl alcohol-based resin used in Examples 13 to 20 were dry blended and pelletized in the same manner as in Examples 13 to 20 at blending ratios shown in Table 4, respectively. A film-shaped resin molded product was obtained by melt extrusion film formation. The evaluation results are shown in Table 4 together with the conditions for producing the resin molded product.

Comparative Examples 8 and 9 EVA used in Examples 13 to 20, polyvinyl alcohol resin used in Examples 13 to 20, and ethylene content of 78
%, An ethylene-vinyl acetate copolymer (unsaponified) having an MI value of 2.8 is dry blended, pelletized, and melt-extruded into a film at the blending ratios shown in Table 4 in the same manner as in Examples 13 to 20. Thus, a film-shaped resin molded product was obtained. The evaluation results are shown in Table 4 together with the conditions for producing the resin molded product.

Example 21 Polyvinyl alcohol-based resin used in Examples 13 to 20, commercially available polypropylene (MI value at 190 ° C .: 3.7 g / 10 minutes) and a degree of saponification of a vinyl acetate portion of 96 mol% with an ethylene content of 78 mol% were obtained. A film-like resin molded product was obtained by dry-blending, pelletizing, and melt-extruding the saponified ethylene-vinyl acetate copolymer at the blending ratios shown in Table 5 in the same manner as in Examples 13 to 20. . The evaluation results are shown in Table 5 together with the conditions for producing the resin molded product.

Comparative Example 10 The polyvinyl alcohol-based resin and commercially available polypropylene used in Example 21 were dry-blended, pelletized, and melt-extruded into films by blending ratios shown in Table 5 in the same manner as in Example 21. Was obtained. The evaluation results are shown in Table 5 together with the conditions for producing the resin molded product.

Example 22 Same polyvinyl alcohol-based resin as in Example 21, commercially available maleic anhydride-modified polyethylene (Mitsui Petrochemical Co., Ltd.)
Dry-blended, pelletized, melt-extrusion film-forming in the same manner as in Example 21 at the blending ratios shown in Table 5 with the trade name Admer LF500 manufactured by EIZO Corporation and the same saponified ethylene-vinyl acetate copolymer as in Example 21. As a result, a film-shaped resin molded product was obtained. The evaluation results are shown in Table 5 together with the conditions for producing the resin molded product.

Comparative Example 11 The polyvinyl alcohol resin used in Example 22 and the modified polyethylene used in
Dry blending, pelletization, and melt extrusion film formation were performed in the same manner as in Example 22 at the blending ratios shown in the table to obtain a film-like resin molded product. The evaluation results are shown in Table 5 together with the conditions for producing the resin molded product.

Comparative Example 12 The same polyvinyl alcohol-based resin and LDPE as in Example 1
And a saponified ethylene-vinyl acetate copolymer were dry-blended, pelletized, and melt-extruded into films at the blending ratios shown in Table 5 in the same manner as in Example 1 to obtain a film-shaped resin molded product. . The evaluation results were used to determine the resin molding conditions. E. Effects of the Invention As is clear from the above examples, the resin molded product obtained from the resin composition of the present invention has a high film strength, a high transparency of the film, and the film has a chargeability. It has extremely low industrial value, such as extremely little dust and the like adhering to the surface, high dropping properties, improved antifogging properties, printability and dyeability, and high heat retention.

[Brief description of the drawings]

FIG. 1 is an infrared absorption spectrum of a film-shaped resin molded product having a thickness of 20 μm obtained in Example 2. FIG. 2 is an infrared absorption spectrum of a film-shaped resin molded product having a thickness of 20 μm obtained in Comparative Example 1.

────────────────────────────────────────────────── (5) References JP-A-56-840 (JP, A) JP-A-54-131649 (JP, A) JP-A-54-100442 (JP, A) (58) Field (Int.Cl. ⁶ , DB name) C08L 23/00-23/36

Claims (5)

(57) [Claims] 1. A polyolefin resin (I), a thermoplastic polyvinyl alcohol resin (II) and a saponified ethylene-vinyl ester copolymer having an ethylene content of 50 to 95 mol% and a saponification degree of 40 to 100 mol%. (III), wherein component (II) is 0.2 to 50 per 100 parts by weight of component (I).
A resin composition wherein the component (III) is 1 to 9 parts by weight based on 100 parts by weight of the component (II). 2. The polyvinyl alcohol resin (II) has a degree of saponification of 40 to 80 mol% and a degree of polymerization of 50 to 100, and has a melt index at a temperature of 190 ° C. of 0.1 to 100.
(G / 10 minutes). 3. The resin composition according to claim 1, wherein the polyolefin resin (I) is one or more polyolefin resins selected from polyethylene, polypropylene and ethylene-vinyl acetate copolymer. 4. A resin molded article comprising the resin composition according to claim 1. 5. A film comprising the resin composition according to claim 1.