JP2787024B2 - Molding method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a polyolefin (A) and a saponified ethylene-vinyl acetate copolymer (B).
The present invention relates to a method for producing a molded article in which a molding abnormality (formation of a wavy pattern on the molded article surface) caused by poor compatibility when melt-molding a composition comprising (hereinafter referred to as EVOH) is improved. You.

[0002]

2. Description of the Related Art Polyolefin (A) and EVOH (B)
And JP-A-56-20073 (U.S. Pat.
S. This composition is generally inferior in compatibility, and is liable to generate non-uniform phase-separated foreign matter when a film, sheet, bottle, or the like is formed by extrusion, particularly for a long time. The operation increases the amount of foreign substances and significantly impairs the appearance. In order to improve the poor compatibility, hydrotalcite and the like may be blended in JP-A-60-199040 (U.S. Patent No. 4).
613644). However, although such a method can provide excellent effects, EVO
It is effective when the amount of H is small, but when the amount of EVOH is large, a corrugated pattern is formed on the surface of the molded product, which is insufficient.

[0003]

DISCLOSURE OF THE INVENTION The present invention relates to a method for melt-forming a composition comprising a polyolefin (A), an EVOH (B) and a compound (C) such as hydrotalcite shown below. Prevents patterns from occurring,
Thereby, a scrap composition such as a regrind is effectively reused to obtain a molded article having a beautiful appearance.

[0004]

Means for Solving the Problems The present invention provides (C) a carbon number
8-22 higher fatty acid metal salt, ethylenediaminetetraacetic acid
At least selected from metal salts and hydrotalcite
Also one compound and (D) ethylene content 68-98
Mol%, ethyl acetate with a saponification degree of vinyl acetate component of 20% or more
-Vinyl acetate copolymer (hereinafter referred to as S-EVOH)
Is mixed with (A) polyolefin in advance,
This is (B) ethylene content 20-65 mol%, vinegar
Ethylene-vinegar having a saponification degree of a vinyl acid component of 96% or more
Melt molding by mixing with saponified vinyl acid copolymer
This is a method for producing a molded article characterized by the following.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, by blending the above (A), (C) and (D) with EVOH (B),
The compatibility of the blend composition is remarkably improved, and not only when the EVOH content is low, but also when the EVOH content is high, long-time continuous operation becomes possible.
Films, sheets, bottles and the like having good appearance without wavy pattern can be formed.

The polyolefin (A) referred to in the present invention is:
High-density, medium-density or low-density polyethylene, vinyl acetate, acrylate, or polyethylene copolymerized with α-olefins such as butene, hexene, 4-methyl-1-pentene, ionomer resin, polypropylene homopolymer, ethylene Polypropylene, or ethylene, butene, hexene,
Polypropylene copolymerized with α-olefins such as 4-methyl-1-pentene, modified polypropylene blended with a rubber-based polymer, poly-1-butene, poly-methyl-1-pentene, or maleic anhydride in the above polyolefin It contains modified polyolefin that has been acted on. Of particular interest to the present invention are polypropylene resins, followed by polyethylene resins.

[0007] The EVOH (B) referred to in the present invention includes any EVOH (B) as long as the vinyl acetate unit in the copolymer of ethylene and vinyl acetate is hydrolyzed. Defective ones have relatively few ethylene units and a high degree of saponification (hydrolysis) of the vinyl acetate component. In particular, the ethylene content is 20 to 65 mol%, preferably 20 to 60 mol%, optimally 20 to 50 mol%, and the degree of saponification of the vinyl acetate component is 9
When 6% or more, especially 99% or more is used in combination with polyolefin, excellent containers can be obtained, and therefore, it is particularly important as an application object of the present invention.

[0008] The EVOH (B) referred to in the present invention may be modified with a copolymer monomer in a range of 5 mol% or less. Examples of the modifying monomer include propylene, 1-butene, 1-hexene and 4-methyl. -1-pentene, acrylic acid ester, methacrylic acid ester, maleic acid, fumaric acid, itaconic acid, higher fatty acid vinyl ester, alkyl vinyl ether, N- (2-dimethylaminoethyl) methacrylamide or a quaternary product thereof, N-vinyl Examples thereof include imidazole or a quaternary compound thereof, N-vinylpyrrolidone, N, N-butoxymethylacrylamide, vinyltrimethoxysilane, vinylmethyldimethoxysilane, and vinyldimethylmethoxysilane. The melt flow index (MI) of EVOH (B) (measured at 190 ° C. under a load of 2160 g) is 0.1 g / 10 min or more, preferably 0.5 g / 10 min or more, and 100 g / 10 min or less. , Preferably 50 g /
Desirably, it is 10 minutes or less, optimally 30 g / 10 minutes or less.

In the present invention, S-EVOH (D) is a special EVOH newly selected and newly developed for the purpose of remarkably improving the compatibility between polyolefin (A) and EVOH (B). It is a saponified ethylene-vinyl acetate copolymer having an ethylene content of 68 to 98 mol% and a saponification degree of the vinyl acetate component of 20% or more. Particularly effective for improving the compatibility is an ethylene content of 70 mol% or more, more preferably 96 mol% or less, more preferably 94 mol% or less.
It is as follows. The more effective degree of saponification of the vinyl acetate component is 30% or more, especially 40% or more. Although the upper limit of the saponification degree is not particularly limited, a saponification degree of substantially 100% can be used.

If the ethylene content is less than 68 mol%, the degree of saponification of the vinyl acetate component is less than 20%, or if the ethylene content is 98 mol% or more, abnormal flow occurs and the appearance becomes poor. It is also desirable that the ethylene content of S-EVOH (D) be higher than the ethylene content of EVOH of (B), preferably at least 5 mol%, and optimally at least 10 mol%. M of S-EVOH (D)
I is 0.1 g / 10 min or more, preferably 0.5 g / 10 min or more, and 100 g / 10 min or less, preferably 50 g / min.
Desirably, it is 10 minutes or less, optimally 30 g / 10 minutes or less.

The S-EVOH (D) according to the present invention may be modified with an unsaturated carboxylic acid or a derivative thereof,
Examples of such modifying acid monomers are α, β unsaturated carboxylic acids, esters or anhydrides thereof, and acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, monomethyl or ethyl esters of maleic acid or fumaric acid, Maleic anhydride and itaconic anhydride can be exemplified. These acid monomers are used alone or in combination.

In the present invention, the compound (C) selected from metal salts of higher fatty acids having 8 to 22 carbon atoms, metal salts of ethylenediaminetetraacetic acid and hydrotalcite compounds
By using one or more of these in combination with S-EVOH (D), the compatibility of (A), (B) and (C) is further improved. In particular, a polyolefin containing a titanium compound as a residual catalyst as the polyolefin (A),
The effect is particularly remarkable when polypropylene is used. Among the above (C), hydrotalcite-based compounds are preferred.

The higher fatty acid salt having 8 to 22 carbon atoms includes
Metal salts of higher fatty acids such as lauric acid, stearic acid and myristic acid, especially periodic table group I, II or II
Group III metal salts such as calcium, magnesium and zinc salts are preferred.

The metal salts of ethylenediaminetetraacetic acid include salts containing metals of Groups I, II or III of the Periodic Table, such as disodium salts, trisodium salts, tetrasodium salts, dipotassium salts, tripotassium salts and trisodium salts. Potassium, tetrapotassium, disodium monomagnesium, disodium monocalcium, disodium ferrous, disodium monozinc, disodium monobarium, disodium monomanganese, disodium monolead, Suitable are potassium monomagnesium salt and the like.

As the hydrotalcite compound, in particular, M _x Al _y (OH) _{2x + 3y-2z} (A) _z · aH ₂ O (M is Mg, Ca or Zn, A is CO ₃ or HP
O _4, x, y, z are positive numbers, a is can be mentioned hydrotalcite compound is a double salt represented by 0 positive number), of which examples include the following as particularly suitable it can.

[0016] _{Mg 6 Al 2 (OH) 16} CO 3 · 4H 2 O Mg 8 Al 2 (OH) 20 CO 3 · 5H 2 O Mg 5 Al 2 (OH) 14 CO 3 · 4H 2 O Mg 10 Al 2 ( _{OH) 22 (CO 3) 2} · 4H 2 O Mg 6 Al 2 (OH) 16 HPO 4 · 4H 2 O Ca 6 Al 2 (OH) 16 CO 3 · 4H 2 O Zn 6 Al 6 (OH) 16 CO 3・ 4H ₂ O

The composition ratio of polyolefin (A) and EVOH (B) is as follows: polyolefin (A): EVOH
(B) as a weight ratio of 60:40 to 99.9: 0.1,
In particular, those in the range of 65:35 to 99.7: 0.3 can be said to be particularly important in terms of the effects of the present invention.

The amount of S-EVOH (D) added is EVOH
Of the polyolefin (A) and EVOH (B), but not less than 0.3 parts by weight, substantially 0.3 to 3 parts by weight based on the total amount of the polyolefin (A) and the EVOH (B).
0 parts by weight, particularly 0.3 to 20 parts by weight, more preferably 0.3 to 10 parts by weight. If the amount is less than 0.3 part by weight, the effect of improving compatibility is not seen, which is not preferable. There is no upper limit, but in practical use, 30 parts by weight or less is sufficient.

The amount of the compound (C) added can improve the compatibility depending on the types of the components (A), (B) and (C), and furthermore, the mechanical properties, transparency and gas barrier properties of the composition. It is prepared in a range that does not impair the various physical properties such as, but in many cases, the amounts thereof are polyolefin (A) and EVOH (B).
0.00001 to 100 parts by weight of the total weight of
It is used in an amount of 10 parts by weight, especially 0.00001 to 1 part by weight. If it exceeds 10 parts by weight, various properties other than compatibility are likely to be impaired, which is not preferable in many cases.

Next, a method of blending (A), (B), (C) and (D) and a method of molding will be described.
In melt-molding a composition comprising polyolefin (A) and EVOH (B), compound (C) and S-EVO
H (D) is previously converted to polyolefin (A) or E
The effect of the present invention becomes even more pronounced if the blended and pelletized VOH (B) or both (A) and (B) is blended with the composition and melt-molded.

S-EVOH (D) is previously converted to EVOH
An example of blending in (B) is EVOH (B) 10
One obtained by mixing 5 to 100 parts by weight of S-EVOH (D) with 0 parts by weight. Thus, the S-E
When VOH (D) is blended with EVOH (B), the effect is large even if the amount of S-EVOH (D) is reduced.

The blending method for obtaining the composition of the present invention is not particularly limited, and a method of dry-blending the four components, wherein S-EVOH (D) is all or one of polyolefin (A) or EVOH (B). Or compound (C) in both polyolefin (A) and compound (C) or EVOH (B) and compound (C) or in both polyolefin (A) and EVOH (B). A method of dry blending the remaining one or two components, a method of dry blending a crushed product of each component, a method of blending and pelletizing the above composition, or a polyolefin (A) layer, a polyolefin (A) + compound (C) Layer, EVOH (B) Layer, and Multilayer Sheet, Cup, Bottom Containing Any of EVOH (B) + Compound (C) Layer S-E in pulverized equal (collected material)
A method of adding VOH (D) and, if necessary, polyolefin (A), EVOH (B) and compound (C) to form a dry blend or a blend pellet is used. It is also effective to use the compound (C) as a master batch blended and pelletized with polypropylene, polyethylene or the like.

Particularly, the components (D) and (C) are blended in advance with a polyolefin to form a blend pellet, which is blended with the (B) EVOH or (A) polyolefin and (B) EVOH, and melt-molded to produce a molded product. It is effective to do.

In the present invention, although the mechanism by which S-EVOH (D) significantly improves the compatibility of the polyolefin (A), EVOH (B) and the compound (C) in the melt molded product is not sufficiently clear, It is presumed that the S-EVOH (D) component is effectively acting in a state where the rheological effects, dispersing action, and the like in the molten system of the polyolefin (A), EVOH (B) and compound (C) are intricately combined. Is done.

The resin composition comprising (A), (C) and (D) or the resin composition comprising (A), (B), (C) and (D) according to the present invention comprises Showa 60-
A salt or oxide containing at least one element selected from Group I, Group II and Group III other than the compound (C) disclosed in JP-A No. 199040 can be blended. Can be blended with other conventional additives. Examples of such additives include antioxidants, ultraviolet absorbers, plasticizers, antistatic agents, lubricants, coloring agents, fillers, or other high molecular compounds, which are used in the present invention. Blending can be performed within a range where the effect is not inhibited. Specific examples of the additives include the following.

Antioxidants: 2,5-di-tert-butylhydroquinone, 2,6-di-tert-butyl-p-cresol, 4,4'-thiobis- (6-tert-butylphenol), 2,2 '-Methylene-bis- (4-methyl-6-
t-butylphenol), octadecyl-3- (3 ',
5'-di-t-butyl-4'-hydroxyphenyl) propionate, 4,4'-thiobis- (6-t-butylphenol) and the like.

UV absorber: ethylene-2-cyano-
3,3'-diphenyl acrylate, 2- (2'-hydroxy-5'-methylphenyl) benzotriazole,
2- (2'-hydroxy-3'-t-butyl-5'-methylphenyl) 5-chlorobenzotriazole, 2-hydroxy-4-methoxybenzophenone-2,2'-dihydroxy-4-methoxybenzophenone, 2- Hydroxy-4-octoxybenzophenone and the like. Plasticizer: dimethyl phthalate, diethyl phthalate, dioctyl phthalate, wax, liquid paraffin, phosphate ester and the like.

Antistatic agent: pentaerythritol monostearate, sorbitan monopalmitate, sulfated polyolefins, polyethylene oxide, carbowax, etc. Lubricant: 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. Many other high molecular compounds can also be blended to such an extent that the effects of the present invention are not impaired.

Examples of means for blending the components for obtaining the composition of the present invention include a ribbon blender, a high-speed mixer co-kneader, a mixing roll, an extruder, an intensive mixer and the like.

The resin composition of the present invention can be prepared by a known melt extrusion molding machine, compression molding machine, transfer molding machine, injection molding machine,
Using blow molding machines, thermoforming machines, rotary molding machines, dip molding machines, etc., films, sheets, tubes, bottles,
It can be molded into any molded article such as a cup. The extrusion temperature at the time of molding is appropriately selected depending on the type and molecular weight of the resin, the blending ratio of the composition, the properties of the extruder, and the like.

The resin composition of the present invention obtained by blending (B) with the resin composition comprising (A), (C) and (D) has two or more optional layers when used as one layer of a multilayer structure. It can have a layer configuration. Suitable examples of the layer structure include:
When the resin composition composed of (A), (B), (C) and (D) is represented by F, the polyolefin is represented by A, the EVOH is represented by B, and the adhesive is represented by AD, the following layer constitution is obtained.

As the AD, a polyolefin modified with an unsaturated carboxylic acid or a derivative thereof is preferable. Modified polyolefin resin is an unsaturated carboxylic acid such as acrylic acid, methacrylic acid, maleic acid, fumaric acid, crotonic acid, itaconic acid, citraconic acid, ester or anhydride thereof; methyl acrylate, methyl methacrylate, Ethyl acrylate, propyl acrylate, butyl acrylate, butyl methacrylate, vinyl acetate, glycidyl acrylate, glycidyl methacrylate, acrylamide, methacrylamide,
At least one selected from the group consisting of unsaturated carboxylic acid derivatives such as sodium acrylate and sodium methacrylate;
Polyolefin resins modified with various unsaturated carboxylic acids or derivatives thereof or blends thereof. Suitable examples of the polyolefin resin include polyethylene, polypropylene, ethylene-vinyl acetate, and acrylate copolymers.

Two layers A / F Three layers A / F / B, F / B / F, F / AD / B Four layers F / B / AD / A, A / F / AD / B Five 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 comprising (A), (B), (C) and (D) can be replaced with scrap of a multilayer structure. It is also possible to mix and use scraps of other polyolefin molded articles. Therefore, when AD is used, AD is contained in the resin composition.

Since the multilayer structure having the above-mentioned layer structure contains EVOH having excellent gas barrier properties, food packaging materials, medical products (pharmaceuticals,
It is useful as a packaging material for medical devices. Especially EVO
A multilayer structure composed of at least two layers of the H (B) layer and the resin composition (F) layer is preferable because of its excellent gas barrier properties.

As the multilayer molding method, generally, a number of extruders corresponding to the type of the resin layer are used, and coextruding is carried out in a layered state in which the flows of the molten resin are superimposed in the extruder. The best practice is by extrusion. As another method, a multilayer molding method such as extrusion coating and dry lamination may be employed. Further, a single molded article of the resin composition of the present invention,
Alternatively, by performing stretching such as uniaxial stretching, biaxial stretching, or blow stretching of the multilayer structure containing the resin composition of the present invention, it is possible to obtain a molded article having mechanical properties, further having physical properties such as gas barrier properties. Obtainable.

As described above, the molded product obtained from the resin composition of the present invention has not only a uniform and beautiful appearance of the blend composition, but also a good and uniform compatibility, so that strength properties and gas barrier properties are obtained. It has many excellent features, and its industrial significance is great. Hereinafter, the present invention will be described more specifically with reference to examples. Parts mean parts by weight.

[0039]

EXAMPLES Example 1 Low density polyethylene (A) (melt index AST)
MD-1238, 1.5g / 10min, density ASTM-
D-1505, 0.92 g / cm ³ ) 45 parts, S-EV
OH (D) ｛ethylene content 74 mol%, degree of saponification of vinyl acetate component 82%, melt flow index (19
4.9 g / 10 min (50 parts) and 5 parts of hydrotalcite (C) were added and blended and pelletized by a kneading extruder at 200 ° C. to obtain a master batch.
Next, polypropylene resin (A) ｛melt flow index (ASTM-D1238, 230 ° C.) 0.5 g / 1
0 minutes {90 parts, EVOH (B)} ethylene content 33 mol%, saponification degree 99.9%, melt index (19
(0 ° C., 2160 g) 1.5 g / 10 minutes｝ 10 parts, and 10 parts of the above-mentioned master batch to obtain a dry blend resin. This dry blend resin is 40 mm in diameter, L / D
= 24 and a full-flight screw having a compression ratio of 3.8, and the film was formed using a flat die having a width of 550 mm. Film forming temperature is 190 押出
The film was heated at 230 ° C. and the die at 220 ° C., and the film having a thickness of 50 μm was wound up by a take-up machine, and a continuous operation was performed for 6 hours.
The obtained film had a uniform thickness, no wave pattern, and no phase-separated foreign matter having poor compatibility was not observed.

Comparative Example 1 Low Density Polyethylene (A) (Melt Index AST)
MD-1238, 1.5g / 10min, density ASTM-
95 parts of D-1505 (0.92 g / cm ³ ) and 5 parts of hydrotalcite (C) were added, and the mixture was blended and pelletized with a kneading extruder at 200 ° C. to obtain a master batch. A film having a thickness of 50 μm was obtained in the same manner as in Example 1 except that the master batch was replaced with the above-mentioned master batch. After 2 hours from the operation, a wave pattern not seen in Example 1 was observed.

Example 2 Polypropylene resin (A) 90 used in Example 1
Parts, 10 parts of EVOH (B) used in Example 1 and 10 parts of the master batch used in Example 1 were dry-blended, and then had a diameter of 40 mm, L / D = 24, and a compression ratio of 3.
8 was extruded with an extruder having a full-flight screw to obtain a pellet (F). The pellet (F) and the EVOH (B) and a maleic acid-modified polypropylene-based adhesive resin (ADMER QF- manufactured by Mitsui Petrochemical Co., Ltd.)
500) (AD) is charged into a separate extruder, and A / F / A
D / B / AD / F / A (film thickness ratio 30/15 / 2.5 / 5
/2.5/15/30) to carry out coextrusion molding of four layers and seven layers to obtain a sheet. In the extrusion molding, A is an extruder equipped with a single screw having a diameter of 65 mm and L / D = 22 at a temperature of 200 to 240 ° C., and F has a diameter of 40 mm.
mm, L / D = 26 extruder equipped with a single screw at a temperature of 160-220 ° C., AD has a diameter of 40 m
m, L / D = 22 An extruder equipped with a single screw
As a temperature of 60 to 230 ° C., B has a diameter of 40 mm and L
The extruder equipped with a / D = 26 single screw is 170-
At a temperature of 210 ° C., feed block die (width 6
00 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 was obtained, no phase-separated foreign matter having poor compatibility was observed, and no abnormal flow and no delamination occurred.

Example 3 Low density polyethylene (A) (melt index AST)
MD-1238, 1.5g / 10min, density ASTM-
D-1505, 0.92 g / cm ³ ) 44 parts, S-EV
Add 50 parts of OH (D) (ethylene content 74 mol%, saponification degree of vinyl acetate component 82%), 5 parts of hydrotalcite (C) and 1 part of calcium stearate (C), and knead at 200 ° C. The mixture was pelletized by a machine to obtain a master batch. 80 parts of the polypropylene resin (A) used in Example 1, EVOH (B) used in Example 1
A continuous operation was performed for 6 hours in the same manner as in Example 1 except that the dry blend resin of 20 parts and 10 parts of the master batch was used, and a film having a thickness of 50 μm was formed. The resulting film had a uniform thickness, no wavy pattern, and no phase-separated foreign matter having poor compatibility.

Example 4 Low density polyethylene (A) (melt index AST)
MD-1238, 1.5g / 10min, density ASTM-
D-1505, 0.92 g / cm ³ ) 49 parts, S-EV
50 parts of OH (D) (ethylene content 74 mol%, saponification degree of vinyl acetate component 82%) and 50 parts of calcium stearate (C) were added, and the mixture was blended and pelletized with a kneader at 200 ° C. to obtain a master batch. Was. Except that 80 parts of the polypropylene resin (A) used in Example 1, 20 parts of the EVOH (B) used in Example 1, and 10 parts of the masterbatch were used as the dry blend resin, the same procedure as in Example 1 was conducted for 6 hours. A continuous operation was performed to form a 50 μm thick film. The resulting film was uniform and had good compatibility, but some phase-separated foreign matters were slightly observed.

Example 5 Low density polyethylene (A) (melt index AST)
MD-1238, 1.5g / 10min, density ASTM-
D-1505, 0.92 g / cm ³ ) 45 parts, S-EV
50 parts of OH (D) (ethylene content: 74 mol%, saponification degree of vinyl acetate component: 82%) and 5 parts of disodium monocalcium ethylenediaminetetraacetate (C) were added to give 20 parts.
The mixture was pelletized by a kneader at 0 ° C. to obtain a master batch. Polypropylene resin (A) used in Example 1
A continuous operation was performed for 6 hours in the same manner as in Example 1, except that 80 parts, 20 parts of EVOH (B) used in Example 1 and 10 parts of the masterbatch were used. A 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,
After dry blending 10 parts of EVOH (B) used in Example 1, 10 parts of the maleic acid-modified polypropylene-based adhesive resin used in Example 2, and 10 parts of the master batch used in Example 1, the diameter was 40 mm. , L / D = 2
4. Melt extrusion was performed with an extruder having a full flight screw having a compression ratio of 3.8 to obtain pellets. In Example 2, a sheet having a thickness of 1000 µ was obtained in the same manner as in Example 2, except that the above-mentioned pellet was used instead of the pellet (F). Even after continuous operation for 48 hours, a good sheet having no wavy pattern was obtained, no phase-separated foreign matter having poor compatibility was observed, and no abnormal flow and no delamination were obtained.

Example 7 In Example 1, SE was used instead of S-EVOH (D).
VOH (D) @ ethylene content 89 mol%, saponification degree 9
A 6-hour continuous operation was carried out in the same manner as in Example 1 except that 1%, an acid value of 3.0 mgKOH / g, and a melt index (190 ° C., 2160 g) of 4.0 g / 10 minutes were used. In the obtained film, no wave pattern was observed, and no phase-separated foreign matter having poor compatibility was observed.

[0047]

According to the present invention, the surface of a molded article obtained by the method for producing a molded article of the present invention does not have a wavy pattern and has a beautiful appearance.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI C08K 3:26 5: 098 5:17) (56) References JP-A-62-179530 (JP, A) (58) Investigation Field (Int.Cl. ⁶ , DB name) C08L 23/00 C08L 23/26 C08L 29/04 C08K 3/00 C08K 5/00

Claims (2)

(57) [Claims] (C) higher fatty acid metal having 8 to 22 carbon atoms
Salt, metal salt of ethylenediaminetetraacetic acid and hydrotal
At least one compound selected from sites, and (D) an ethylene content of 68 to 98 mol%,
-Vinyl acetate copolymer with a degree of saponification of at least 20%
The saponified body is previously blended with (A) a polyolefin , which is then blended with (B) an ethylene content of 20 to 65 mol%,
Ethylene-vinyl acetate having a saponification degree of
A method for producing a molded product, which is blended with a saponified polymer and melt-molded. 2. (C) Higher fatty acid metal having 8 to 22 carbon atoms
Salt, metal salt of ethylenediaminetetraacetic acid and hydrotal
At least one compound selected from sites and (D) an ethylene content of 68 to 98 mol%,
-Vinyl acetate copolymer with a degree of saponification of at least 20%
The saponified body is previously blended with the polyolefin (A), and then this is blended with (B) an ethylene content of 20 to 65 mol%,
Ethylene-vinyl acetate having a saponification degree of
Compounded with saponified polymer and (A) polyolefin
A method for producing a molded product, which is characterized by performing melt molding.