JP2604484C - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTIONA. Industrial applications   The present invention relates to a polyolefin (A) and a saponified ethylene-vinyl acetate copolymer (
B) When melt-forming a composition consisting of (hereinafter referred to as EVOH), poor compatibility may occur.
A composition and a molding which have improved molding abnormality (formation of wavy pattern on the molded product)
And a multilayer structure using the same.B. Conventional technology   A blend composition of polyolefin (A) and EVOH (B) is disclosed in JP-A-56-2.
0073 (U.S. Pat. No. 4,284,671).
This composition is generally poorly compatible and can be extruded into films, sheets, bottles, etc.
Molding tends to produce non-uniform phase-separated contaminants. The number of objects increases and the appearance is significantly impaired. To remedy this poor compatibility,
The compounding of Lucite or the like is disclosed in JP-A-60-199040 (U.S. Pat.
nt 4613664). However, such a method is excellent.
Although the above effect can be obtained, it is effective when the EVOH amount is small.
When the OH content is too large, a corrugated pattern is formed on the surface of the molded product, which is insufficient.C. Problems to be solved by the invention   The present invention relates to a polyolefin (A), an EVOH (B) and a hydride described below.
When molding a composition comprising compound (C) such as lotarsite, the surface of the molded product
Prevents the generation of wavy patterns on the surface, thereby improving scrap composition such as regrind.
The object is effectively reused to obtain a molded article with beautiful appearance.D. Means for solving the problem   The present invention relates to a polyolefin (A), an EVOH (B), and a higher fat having 8 to 22 carbon atoms.
Selected from metal salts of fatty acids, metal salts of ethylenediaminetetraacetic acid and hydrotalcite
At least one compound (C) and an ethylene content of 68 to 98 mol%,
Degree of saponification of vinyl acid component40%that's allAnd a melt flow index (190 ° C,
2160 g) 0.1 to 30 g / 10 minutesOf ethylene-vinyl acetate copolymer
(D) (hereinafter referred to as S-EVOH).   In the present invention, both (D) and (C) are used as the polyolefin (A) and EVO.
H (B) significantly improves the compatibility of the blend composition and increases EV
Not only when the OH content is low, but also when the EVOH content is high.
Continuous operation for a long time even if it is
, Bottles and the like can be formed.   The polyolefin (A) referred to in the present invention is a high-, medium-, or low-density polyolefin.
Ethylene, vinyl acetate, acrylate, or butene, hexene, 4
Polyethylene, α-olefins such as -methyl-1-pentene,
Ionomer resin, polypropylene homopolymer, ethylene graft polymer
Propylene, or ethylene, butene, hexene, 4-methyl-1-pentene
Polypropylene and rubber polymers copolymerized with α-olefins such as
Modified polypropylene, poly 1-butene, poly 4-methyl-1-pentene
, Alternatively, a modified polyolefin obtained by reacting the above-mentioned polyolefin with maleic anhydride.
And so on. Of particular importance to the present invention are polypropylene resins.
And then a polyethylene resin.   In addition, EVOH (B) in the present invention means a copolymer of ethylene and vinyl acetate.
Any substance hydrolyzed from vinyl acetate units is included, but
Those with poor compatibility with polyolefins have relatively few ethylene units and
The saponification degree (hydrolysis degree) of the nil component is high. In particular, ethylene content
20-65 mol%, preferably 20-60 mol%, optimally 20-50 mol%,
Vinyl acetate components having a degree of saponification of 96% or more, especially 99% or more
Because excellent containers can be obtained by using in combination with fins, the present invention
It is particularly important as an application object.   The EVOH (B) referred to in the present invention is modified with a copolymer monomer in a range of 5 mol% or less.
The modifying monomer may be propylene, 1-butene, 1
-Hexene, 4-methyl-1-pentene, acrylates, methacrylates
Stele, maleic acid, fumaric acid, itaconic acid, higher fatty acid vinyl ester, alcohol
Alkyl vinyl ether, N- (2-dimethylaminoethyl) methacrylamide
Or its quaternary product, N-vinylimidazole, or its quaternary product, N-vinyl
Rupyrrolidone, N, N-butoxymethylacrylamide, vinyltrimethoxy
Examples of orchid, vinylmethyldimethoxysilane, vinyldimethylmethoxysilane, etc.
can do. Also, the melt flow index (MI) of EVOH (B) (
(Measured under a load of 2160 g at 190 ° C.) is 0.1 g / 10 min or more, preferably 0.5 g
g / 10 minutes or more, and 100 g / 10 minutes or less, preferably 50 g / 10 minutes or less.
Below, optimally, it is desirable that it is 30g / 10 minutes or less.   In the present invention, S-EVOH (D) refers to polyolefin (A) and EV
Specially selected and newly developed specially for the purpose of remarkably improving the compatibility of OH (B)
EVOH, ethylene content 68-98 mol%, saponification of vinyl acetate component
Every time40% Or more of a saponified ethylene-vinyl acetate copolymer. Especially compatibility improvement
A good effect is when the ethylene content is 70 mol% or more, and 96 mol% or less.
And more preferably 94 mol% or less. The upper limit of the degree of saponification is not particularly limited.
I However, those having a saponification degree of substantially 100% can also be used.   Ethylene content is less than 68 mol% or saponification degree of vinyl acetate component40
%, Or when the ethylene content is 98 mol% or more, abnormal flow occurs and the appearance is poor.
It becomes. The ethylene content of S-EVOH (D) is equivalent to the ethylene content of EVOH of (B).
Content, preferably at least 5 mol%, optimally at least 10 mol%.
Desirably, it is higher by mole%. The MI of S-EVOH (D) is 0.1 g / 10 min.
As mentioned above, it is preferably 0.5 g / 10 minutes or more,It is 30 g / 10 minutes or less.   S-EVOH (D) according to the present invention is modified with an unsaturated carboxylic acid or a derivative thereof.
The modifying acid monomer may be an α, β unsaturated carboxylic acid,
The ester or its anhydride, acrylic acid, methacrylic acid, maleic
Monomethyl or ethyl acid, fumaric acid, itaconic acid, maleic acid or fumaric acid
Examples thereof include esters, maleic anhydride, and itaconic anhydride. these
The acid monomers are used alone or in combination.   In the present invention, a higher fatty acid metal salt having 8 to 22 carbon atoms,
One of the compounds (C) selected from metal salts of acetic acid and hydrotalcite compounds
(A), (B) by using one or more species together with S-EVOH (D)
And the compatibility of (C) is further improved. Especially as polyolefin (A)
Polyolefin containing titanium compound as residual catalyst, especially polypropylene
The effect becomes remarkable when is used. Of the above (C), hydrotalcite
System compounds are preferred.   As higher fatty acid salts having 8 to 22 carbon atoms, lauric acid, stearic acid, myris
Metal salts of higher fatty acids, such as carboxylic acid, especially Group I, II or III of the Periodic Table
Group metal salts such as calcium, magnesium and zinc salts are preferred.   Examples of the metal salt of ethylenediaminetetraacetic acid include Group I, Group II, or Group I of the periodic table.
Salts containing Group III metals, such as disodium salt, trisodium salt, tetrasodium
Salt, dipotassium salt, tripotassium salt, tetrapotassium salt, disodium monomagnesium
Salt, disodium monocalcium salt, disodium monoiron salt, disodium monozinc
Salt, disodium monobarium salt, disodium monomanganese salt, disodium monolead
Salt, dipotassium monomagnesium salt and the like are preferred.   As the hydrotalcite compound, in particular,           M_xAl_y(OH)_{2x + 3y-2z}(A)_z・ AH_TwoO (M is Mg, Ca or Zn, A is CO_ThreeOr HPO_Four, X, y, z are positive numbers, a
Is a positive number) and a hydrotalcite compound which is a double salt represented by the following formula:
Among them, the following can be exemplified as particularly preferable ones.           Mg₆Al_Two(OH)₁₆CO_Three・ 4H_TwoO           Mg₈Al_Two(OH)₂₀CO_Three・ 5H_TwoO           Mg_FiveAl_Two(OH)₁₄CO_Three・ 4H_TwoO           Mg_TenAl_Two(OH)_{twenty two}(CO_Three)_Two・ 4H_TwoO           Mg₆Al_Two(OH)₁₆HPO_Four・ 4H_TwoO           Ca₆Al_Two(OH)₁₆CO_Three・ 4H_TwoO           Zn₆A₆(OH)₁₆CO_Three・ 4H_TwoO   As a composition ratio of the polyolefin (A) and the EVOH (B), the polyolefin (
A): EVOH (B) as a weight ratio of 60:40 to 99.9: 0.1, especially
Those having a range of 65:35 to 99.7: 0.3 are particularly important in terms of the effects of the present invention.
It can be said that.   The amount of S-EVOH (D) added depends on the type and composition of EVOH.
Although not determined, the total amount of polyolefin (A) and EVOH (B) is 100 parts by weight
0.3 parts by weight or more, practically 0.3 to 30 parts by weight, particularly 0.3 to 2 parts by weight.
0 parts by weight, more preferably 0.3 to 10 parts by weight. 0.3
When the amount is less than the weight part, no effect of improving the compatibility is obtained, which is not preferable. Also, there is no upper limit
Although not necessary, 30 parts by weight or less is sufficient in practical use.   The amount of compound (C) to be added depends on the types of components (A), (B) and (C).
Effect of improving the mechanical properties, transparency, gas barrier properties, etc. of the composition
It is prepared within the range that does not impair various physical properties, but in most cases, the amount is polyolefin
0.00001 to 100 parts by weight of the total weight of (A) and EVOH (B)
It is used in an amount of 10 parts by weight, especially 0.0001 to 1 part by weight. 10 parts by weight
If it exceeds, various properties other than compatibility are likely to be impaired, which is not preferable in many cases.   Next, a blending method and a molding method of the above (A), (B), (C) and (D)
Nitsu I will describe.   When melt-forming a composition comprising polyolefin (A) and EVOH (B),
, Compound (C) and S-EVOH (D) were previously added to polyolefin (A).
Or blend with EVOH (B) or both (A) and (B) and blend pellets
The effects of the present invention can be further enhanced by blending the
Become author.   As an example of blending S-EVOH (D) with EVOH (B) in advance,
5 to 100 parts by weight of S-EVOH (D) was blended with 100 parts by weight of EVOH (B).
Things. As described above, S-EVOH (D) is converted into EVOH (B
)), The effect is reduced even if the amount of S-EVOH (D) is reduced.
large.   The blending method for obtaining the composition of the present invention is not particularly limited, and the four methods are used for drying.
Method of blending S-EVOH (D) with polyolefin (A) or EVO
H (B) or all or part of H (B)
Fin (A) and compound (C) or EVOH (B) and compound (C) or
Blend of compound (C) with both polyolefin (A) and EVOH (B)
Then, dry blend the remaining one or two components and pulverize each component.
A method of dry blending, a method of pelletizing the above composition, or
Polyolefin (A) layer, polyolefin (A) + compound (C) layer, EVOH (B
) And an EVOH (B) + compound (C) layer.
S-EVOH (D) on pulverized material (collected material) such as
Add polyolefin (A), EVOH (B) and compound (C) and dry dry.
Or a method of forming a blend pellet. The compound (
C) is a master blended with polypropylene, polyethylene, etc.
It is also effective to use it as a batch.   Particularly, the components (D) and (C) are distributed to polyolefin and / or EVOH.
And blended into pellets, which are (A) polyolefin and (B) EVO
It is effective to mix with H and melt-mold.   In the present invention, S-EVOH (D) is a polyolefin (A), EVOH (B
) For improving the compatibility of the compound (C) in a melt-formed product and the compound (C)
Is not sufficiently clear, but polyolefin (A), EVOH (B) and compound
Rheological effect, dispersing action, etc. in the molten system of (C) are combined in a complex manner
It is presumed that the S-EVOH (D) component is effectively acting in the state.   The resin composition comprising (A), (B), (C) and (D) of the present invention contains
Periods other than the compound (C) disclosed in JP-A-60-199040
Salt containing at least one element selected from Group I, Group II and Group III
Alternatively, an oxide can be blended, and other additives commonly used in polyolefins can be used.
Additives may also be included. Examples of such additives include antioxidants, purple
External absorber, plasticizer, antistatic agent, lubricant, colorant, filler, or other polymer
Compounds can be mentioned, and these can be used within a range that does not inhibit the effects of the present invention.
Can be blended. The following are specific examples of additives.
It is. Antioxidant: 2,5-di-t-butylhydroquinone, 2,6-di-t-butyl
-P-cresol, 4,4'-thiobis- (6-t-butylphenol), 2,
2'-methylene-bis- (4-methyl-6-t-butylphenol), octade
Sil-3- (3 ', 5'-di-tert-butyl-4'-hydroxyphenyl) prop
Onate, 4,4'-thiobis- (6-t-butylphenol) and the like. UV absorber: ethylene-2-cyano-3,3'-diphenylacrylate, 2
-(2'-hydroxy-5'-methylphenyl) benzotriazole, 2- (2
'-Hydroxy-3'-t-butyl-5'-methylphenyl) 5-chlorobenzo
Triazole, 2-hydroxy-4-methoxybenzophenone-2,2'-dihi
Droxy-4-methoxybenzophenone, 2-hydroxy-4-octoxyben
Zofesin and the like. Plasticizer: dimethyl phthalate, diethyl phthalate, dioctyl phthalate, wax
, Liquid paraffin, phosphate esters and the like. Antistatic agent: Pentaery slit monostearate, sorbitan monopalmitate
G, sulfated polyolefins, polyethylene oxide, carbowax and the like. Lubricants: ethylene bis stearamide, butyl stearate and the like. Colorants: carbon black, phthalocyanine, quinacridone, indoline, azo Pigments, red iron, etc. Filler: glass fiber, asbestos, ballastonite, calcium silicate, etc.
.   In addition, many other high molecular compounds are blurred to the extent that the effects of the present invention are not impaired.
Can also be used.   As a means for compounding each component to obtain the composition of the present invention, a ribbon blender,
High-speed mixer co-kneader, mixing roll, extruder, intensive mixer, etc.
Is exemplified.   The resin composition of the present invention can be prepared by using a well-known melt extrusion molding machine, compression molding machine, and transfer molding machine.
Forming machines, injection molding machines, blow molding machines, thermoforming machines, rotational molding machines, dip molding machines, etc.
Use on any molded products such as films, sheets, tubes, bottles, cups, etc.
Can be molded. The extrusion temperature during molding depends on the type of resin, molecular weight, composition
Is appropriately selected depending on the blending ratio of the extruder or the properties of the extruder.
The range is from 0 to 350 ° C.   When the resin composition of the present invention is used as one layer of a multilayer structure, two or more layers are optional.
Can be taken. As a suitable example of the layer constitution, the resin composition of the present invention is
, A represents polyolefin, B represents EVOH, and AD represents an adhesive.
Become.   Here, AD is polio modified with an unsaturated carboxylic acid or a derivative thereof.
Refining is preferred. Modified polyolefin resin is
Luic acid, methacrylic acid, maleic acid, fumaric acid, crotonic acid, itaconic acid, cyto
Unsaturated carboxylic acids such as laconic acid, esters or anhydrides thereof; acrylic acid
Chill, methyl methacrylate, ethyl acrylate, propyl acrylate, acrylic
Butyl acrylate, butyl methacrylate, vinyl acetate, glycidyl acrylate,
Sidyl methacrylate, acrylamide, methacrylamide, sodium acrylate
And unsaturated carboxylic acid derivatives such as sodium and sodium methacrylate;
Polyolefin modified with at least one unsaturated carboxylic acid or derivative thereof
Resin or a blend thereof. Polyolefin resins include
Tylene, polypropylene, ethylene-vinyl acetate or acrylate copolymer
Preferred examples include coalescence.   2-layer A / F   3 layers A / F / B, F / B / F, F / AD / B   4-layer F / B / AD / A, A / F / AD / B   5 layers F / AD / B / AD / F, A / F / B / AD / A, A / F / B / F / A   6 layers A / F / AD / B / AD / A   7 layers A / F / AD / B / AD / F / A   In such a multilayer structure, the resin composition of the present invention may be used in a multilayer structure.
Craps can be used instead. Scraps of other polyolefin moldings
May be used in combination. Therefore, when using AD, the present invention
AD will be contained in the resin composition.   The multilayer structure having the above-mentioned layer structure contains EVOH having excellent gas barrier properties.
Therefore, food packaging materials and pharmaceuticals (pharmaceuticals, medical
It is useful as a packaging material. Particularly, the EVOH (B) layer and the resin composition (F
) A multilayer structure composed of at least two layers is excellent in gas barrier properties.
Is preferred.   As a multilayer molding method, generally, a number of extruders corresponding to the type of the resin layer is used.
Used and co-extruded in a layered state where the flow of resin melted in this extruder is superimposed
The method of forming by so-called coextrusion molding is the best. As an alternative
, Extrusion coating, dry lamination and other multilayer molding methods
Can also be employed. Further, a single molded article of the resin composition of the present invention, or a resin composition of the present invention
The multilayer structure containing the resin composition is stretched by uniaxial stretching, biaxial stretching, or blow stretching.
A material that has further characteristics such as mechanical properties and gas barrier properties by elongation
A molded article having properties can be obtained. Thus, the resin composition of the present invention is obtained.
In addition to the uniform appearance of the blended composition and beautiful appearance,
It has many excellent features such as strength properties and gas barrier properties because it is good and uniform.
And its industrial significance is great.   Hereinafter, the present invention will be described more specifically with reference to examples. Parts mean parts by weight
.E. FIG. Example Example 1   Low density polyethylene (A) (melt index ASTM-D-1238, 1
. 5 g / 10 min, density ASTM-D-1505, 0.92 g / cm^Three) 45 parts,
S-EVOH (D) (ethylene content: 74 mol%, degree of saponification of vinyl acetate component: 8
2%, melt flow index (190 g, 2160 g) 4.9 g / 10 min)
50 parts and 5 parts of hydrotalcite (C) were added, and the mixture was extruded with a kneading extruder at 200 ° C.
Lend pelletization was performed to obtain a master batch.   Next, polypropylene resin (A) ｛melt flow index (ASTM-D1)
238, 230 ° C) 0.5 g / 10 min (90 parts, EVOH (B)) containing ethylene
33 mol%, saponification degree 99.9%, melt index (190 ° C., 2160
g) 1.5 g / 10 min @ 10 parts and drive of 10 parts of the above master batch
A rendered resin was obtained.   This dry blended resin is 40 mm in diameter, L / D = 24, and the compression ratio is 3.8.
A flat die with a width of 550 mm was charged into an extruder having a leflight type screw.
Was used to perform film formation. The film forming temperature is 190-230 ° C for the extruder and 2 for the die.
At 20 ° C, a film with a thickness of 50μ is taken up by a take-up machine, and a continuous operation for 6 hours is performed.
Carried out.   The resulting film has a uniform thickness, no wavy pattern, and poorly miscible phase-separated foreign matter.
Was not seen. Comparative Example 1   Low density polyethylene (A) (melt index ASTM-D-1238, 1
. 5 g / 10 min, density ASTM-D-1505, 0.92 g / cm^Three) 95 parts
Add 5 parts of hydrotalcite (C) and blend with a kneading extruder at 200 ° C.
And a master batch was obtained.   Example 1 was repeated except that the masterbatch was replaced with the above masterbatch.
In the same manner as in Example 1, a film having a thickness of 50 μ was obtained. Example 1 after 2 hours of operation
There was a wave pattern that could not be seen. Example 2   90 parts of polypropylene resin (A) used in Example 1, used in Example 1
10 parts of EVOH (B) and 10 parts of the masterbatch used in Example 1 were dried. After blending, full flight with 40mm diameter, L / D = 24, compression ratio 3.8
It was melt-extruded with an extruder having a mold screw to obtain a pellet (F).   The pellet (F) and the EVOH (B) and the maleic acid-modified polypropylene
Separate ren adhesive resin (ADMER QF-500 from Mitsui Petrochemical) (AD)
A / F / AD / B / AD / F / A (film thickness ratio 30/15/2)
. (5/5 / 2.5 / 15/30) co-extrusion molding of 4 types and 7 layers.
I got a sheet. For extrusion molding, A is a uniaxial screw with a diameter of 65 mm and L / D = 22.
F is 40 mm in diameter, L / L
The extruder equipped with a single screw D = 26 was set to a temperature of 160 to 220 ° C., and A
D is an extruder having a diameter of 40 mm and a single screw of L / D = 22 from 160 to 160.
As a temperature of 230 ° C., B has a diameter of 40 mm and a single screw of L / D = 26.
The extruder obtained was heated to a temperature of 170 to 210 ° C., and fed block die (width 60
0 mm) at 240 ° C. to obtain a sheet having a thickness of 1000 μm.   Even after continuous operation for 24 hours, a good sheet having no wave pattern can be obtained, and a poorly compatible phase can be obtained.
No detached foreign matter was observed, and no abnormal flow and no delamination occurred. Example 3   Low density polyethylene (A) (melt index ASTM-D-1238, 1
. 5 g / 10 min, density ASTM-D-1505, 0.92 g / cm^Three) 44 parts,
S-EVOH (D) (ethylene content: 74 mol%, degree of saponification of vinyl acetate component: 8
2%) 50 parts, hydrotalcite (C) 5 parts and calcium stearate (C)
Add 1 part, pelletize with a kneader at 200 ° C and mix the masterbatch.
Obtained.   80 parts of the polypropylene resin (A) used in Example 1, E used in Example 1
Using 20 parts of VOH (B) and 10 parts of masterbatch dry blend resin
Otherwise, a continuous operation for 6 hours was carried out in the same manner as in Example 1, and a 50 μm-thick
Film was formed.   The resulting film has a uniform thickness, no wave pattern, and poor phase separation due to poor compatibility.
Nothing was seen. Example 4   Low density polyethylene (A) (melt index ASTM-D-1238, 1
. 5 g / 10 min, density ASTM-D-1505, 0.92 g / cm^Three) 49 parts, S
-EVOH (D) (ethylene content 74 mol%, saponification degree of vinyl acetate component 82
%) And 1 part of calcium stearate (C) were added, and the mixture was kneaded at 200 ° C.
Into a pellet to obtain a master batch.   80 parts of the polypropylene resin (A) used in Example 1, E used in Example 1
Using 20 parts of VOH (B) and 10 parts of masterbatch dry blend resin
Otherwise, a continuous operation for 6 hours was carried out in the same manner as in Example 1 to obtain a film having a thickness of 50 μm.
Was formed.   The resulting film is uniform and has good compatibility, but has a slight phase separation difference.
Things were seen. Example 5   Low density polyethylene (A) (melt index ASTM-D-1238, 1
. 5 g / 10 min, density ASTM-D-1505, 0.92 g / cm^Three) 45 parts,
S-EVOH (D) (ethylene content: 74 mol%, degree of saponification of vinyl acetate component: 8
2%) 50 parts and disodium monocalcium ethylenediaminetetraacetate (C) 5 parts
The mixture was added and blended into pellets with a kneader at 200 ° C. to obtain a master batch.   80 parts of the polypropylene resin (A) used in Example 1, E used in Example 1
Using 20 parts of VOH (B) and 10 parts of masterbatch dry blend resin
Otherwise, a continuous operation for 6 hours was carried out in the same manner as in Example 1, and a 50 μm-thick
Film was formed.   The resulting film had some phase-separated foreign matter, but no wavy pattern. Example 6   90 parts of the polypropylene resin (A) used in Example 1, E used in Example 1
VOH (B) 10 parts, maleic acid-modified polypropylene-based contact used in Example 2
10 parts of the adhesive resin and 10 parts of the master batch used in Example 1 were dry-dried.
After being loaded, a full flight type disk with a diameter of 40 mm, L / D = 24 and a compression ratio of 3.8
The mixture was melt-extruded with an extruder having a Liu to obtain pellets.   In Example 2, except that the above pellets were used instead of the pellets (F),
In the same manner as in Example 2, a sheet having a thickness of 1000 μ was obtained. Even after 48 hours of continuous operation
, A good sheet without wavy pattern was obtained, no phase-separated foreign matter with poor compatibility was observed,
Delamination was not always obtained. Example 7   In Example 1, instead of S-EVOH (D), S-EVOH (D) ｛ethyl
Content: 89 mol%, saponification degree: 91%, acid value: 3.0 mg KOH / g, melt-in
Except that Dex (190 ° C., 2160 g) 4.0 g / 10 min was used.
In the same manner as in 1, the continuous operation for 6 hours was performed. The resulting film does not look wavy
No phase-separated foreign matter having poor compatibility was not observed.F. The invention's effect   The resin composition of the present invention has excellent compatibility, and is obtained from this resin composition.
There is no wave pattern on the surface of the molded product, and the appearance is beautiful.

Claims (1)

Claims (1) (A) Polyolefin (B) Ethylene content of 20 to 65 mol%, saponification degree of vinyl acetate component 96
% Or more of a saponified ethylene-vinyl acetate copolymer (C) at least one compound selected from metal salts of higher fatty acids having 8 to 22 carbon atoms, metal salts of ethylenediaminetetraacetic acid and hydrotalcite, and (D) ethylene-containing 68-98 mol%, saponification degree of vinyl acetate component 40
% Or more and melt flow index (190 ° C., 2160 g) 0.1 to 30 g
(A): (B) consisting of saponified ethylene-vinyl acetate copolymer / 10 min.
) Is 60:40 to 99.1 : 0.1, (C) is 0.00001 to 10 parts by weight based on 100 parts by weight of the total amount of (A) and (B), and (D) Are (A) and (
A resin composition containing 0.3 parts by weight or more based on 100 parts by weight of the total amount of B). (2) From at least two layers of a layer containing the composition according to claim 1 and a saponified ethylene-vinyl acetate copolymer layer having an ethylene content of 20 to 65 mol% and a saponification degree of a vinyl acetate component of 96% or more. Multilayer structure.