JPH0797452A - Compatibilizer and highly moistureproof polymer alloy sheet for drug packaging - Google Patents

Abstract

PURPOSE:To obtain the title sheet excellent in the balance among physical properties by using a compatibilizer obtd. by the melt reaction of a mixture comprising a specific modified crystalline polyolefin or a specific hydrogenated block copolymer and a specific modified amorphous polyolefin. CONSTITUTION:A compatibilizer is obtd. by the melt reaction of a mixture comprising 90-10wt.% modified crystalline polyolefin having carboxylic anhydride groups and/or carboxyl groups or 90-10wt.% carboxylic-anhydride modification of a hydrogenated block copolymer obtd. from an arom. vinyl compd. and a conjugated diene compd. and 10-90wt.% modified amorphous polyolefin having epoxy groups in the molecule. The title sheet is obtd. by compounding 0.1-10pts. wt. compatibilizer obtd. as above into 100pts.wt. mixture comprising an amorphous polyolefin having a heat distortion temp. of 100 deg.C or lower and a high- density polyethylene.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a novel compatibilizing agent showing good compatibility with a specific amorphous polyolefin and high-density polyethylene, and a physical property balance which can be used as a sheet or a film by extrusion molding and the like. The present invention relates to a novel polymer alloy sheet for packaging highly moisture-proof chemicals, which is excellent in appearance, moldability, moisture resistance, transparency, impact resistance, and oil resistance.

[0002]

2. Description of the Related Art Amorphous polyolefin has excellent properties such as transparency, moisture resistance, electrical properties, mechanical strength, moldability and dimensional stability, but it is extremely brittle and is manufactured by extrusion molding or the like. The sheet or film described above lacks impact resistance in practical use, and it is desired that the sheet or film be toughened without impairing the characteristics of the amorphous polyolefin. Further, the amorphous polyolefin has poor oil resistance because it is amorphous, and needs to be improved for use in applications such as foods requiring oil resistance. To improve these drawbacks, JP-A-4-272937 discloses a method of forming a composite sheet in which a crystalline polymer and a hydride of a ring-opening polymer of dicyclopentadiene having a high glass transition point are combined. However, although the composite sheet of the present invention is excellent in impact resistance, it is a sheet rich in crystalline resin having poor moldability and poor moisture resistance, and
A hydride of a ring-opening polymer of dicyclopentadiene, which is difficult to form and has a high glass transition point, was combined, and it was difficult to use as a highly moisture-proof chemicals packaging sheet.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides a novel phase which exhibits good compatibility with both amorphous polyolefin (D) and high-density polyethylene (E) resins having a heat distortion temperature of 100 ° C. or less. Good balance of physical properties such as moldability, rigidity, scratch resistance, impact resistance, oil resistance, chemical resistance, water resistance, moisture resistance and transparency obtained by using a compatibilizer and a new compatibilizer It is also an object of the present invention to provide a novel polymer alloy sheet for packaging highly moisture-proof chemicals, which is excellent in appearance and moldability during molding of a film or sheet.

[0004]

The present invention provides a novel phase having good compatibility with amorphous polyolefin (D) having a heat distortion temperature of 100 ° C. or less and high density polyethylene (E) and both resins. The present invention relates to a polymer alloy sheet for packaging highly moisture-proof chemicals, characterized by containing a solubilizer. Generally, in order to obtain good transparency when combining two or more kinds of resins, it is conceivable to select ones having almost the same refractive index of each resin and to disperse the dispersed particle diameter in a microscopic manner. . In the case of the present invention, the resins have almost the same refractive index and good moisture resistance, and the same polyolefin-based resin is excellent in compatibility. Incorporation of a new compatibilizer exhibiting good compatibility with the amorphous polyolefin (D) having a heat distortion temperature of 100 ° C. or less, which is excellent in moldability and moisture resistance, is used as a sea component and a high island component content. Only by finely dispersing the density polyethylene (E) and strengthening the interface with a compatibilizer, the balance of physical properties such as moldability, rigidity, scratch resistance, impact resistance, moisture resistance, and transparency is very good. In addition, a novel polymer alloy sheet for packaging highly moisture-proof chemicals, which has excellent appearance and moldability during molding of films, sheets, etc., can be obtained, and the compounding ratio of the two types of resins should be within a very specific range. More oil resistance, which resulted in the completion of the present invention found that the novel high-moisture-proof drug packaging polymer alloy sheet excellent in chemical resistance can be obtained.

That is, the present invention comprises a polymer block mainly composed of a modified crystalline polyolefin (A) having a carboxylic acid anhydride group and / or a carboxylic acid group in the molecule or at least one vinyl aromatic compound. 90% by weight of a carboxylic acid anhydride modified product (B) of a hydrogenated block copolymer obtained by hydrogenating a block copolymer composed of a polymer block containing one conjugated diene compound as a main component
A compatibilizer comprising a mixture of 10% by weight to 90% by weight of a modified amorphous polyolefin (C) having an epoxy group in the molecule, and a compatibilizer, and the present invention is 0.1 to 10 parts by weight of the compatibilizer according to claim 1 is added to 100 parts by weight of a mixture of an amorphous polyolefin (D) and a high-density polyethylene (E) having a heat distortion temperature of 100 ° C. or less. A polymer alloy sheet for packaging highly moisture-proof chemicals, wherein the blending ratio of the amorphous polyolefin (D) and the high-density polyethylene (E) is preferably 80% by weight: 20% by weight to 45% by weight: 55% by weight. %, More preferably the blending ratio of the amorphous polyolefin (D) and the high density polyethylene (E) is 65% by weight: 35% by weight to 45% by weight: 55% by weight, and the high density polyethylene Density of emissions (E) is 0.960
The above is a polymer alloy sheet for packaging highly moisture-proof chemicals.

The heat distortion temperature used in the present invention is 100.
The base resin of the amorphous polyolefin (D) and the modified amorphous polyolefin (C) at a temperature of not higher than 0 ° C. is a polymer having a cyclic olefin structure, and can be said to be an amorphous polyolefin because of its structure and properties. Examples of the amorphous polyolefin having a heat distortion temperature of 100 ° C. or lower include, for example, an amorphous polymer represented by the following general formula. (Wherein n is a positive integer of 1 or more, m is a positive integer of 1 or more, R ₁ is a hydrogen atom, a halogen atom, a CH ₃ CH ₂ group or a C ₆ H ₄ R ₂ group, and R ₂ Is a hydrogen atom, a hydrocarbon group,
An alkoxy group, a halogenated hydrocarbon group or a halogen atom is shown. X represents a hydrogenated group of an addition reaction product of cyclopentadiene or its derivative and norbornadiene or its derivative, or a left group of an addition reaction product of dicyclopentadiene or its derivative and ethylene. )

The hydrogenation product of the addition reaction product of cyclopentadiene or its derivative with norbornadiene or its derivative, or the general formula of the addition reaction product of dicyclopentadiene or its derivative with ethylene is shown below.

[Chemical 1] (In the formula, n is a positive integer of 1 or more, and R _{1 to} R _1
12 independently represent an atom or a group selected from a hydrogen atom, a halogen atom, and a hydrocarbon group, and R _{9 to} R
₁₂ may combine with each other to form a monocycle or polycycle. )

Examples of the hydrogenation product of the addition reaction product of cyclopentadiene or its derivative with norbornadiene or its derivative, or the addition reaction product of dicyclopentadiene or its derivative with ethylene, include tetracyclo-3-dodecene, 8-methyltetracyclo-3
-Dodecene, 8-ethyltetracyclo-3-dodecene,
8-propyltetracyclo-3-dodecene, 8-butyltetracyclo-3-dodecene, 8-isobutyltetracyclo-3-dodecene, 8-hexyltetracyclo-3-
Dodecene, 8-stearyltetracyclo-3-dodecene, 5,10-dimethyltetracyclo-3-dodecene,
2,10-dimethyltetracyclo-3-dodecene, 8,
9-dimethyltetracyclo-3-dodecene, 8-ethyl-9-methyltetracyclo-3-dodecene, 11,12
-Dimethyltetracyclo-3-dodecene, 2,7,9-
Trimethyltetracyclo-3-dodecene, 9-ethyl-
2,7-Dimethyltetracyclo-3-dodecene, 9-isobutyl-2,7-dimethyltetracyclo-3-dodecene, 9,11,12-trimethyltetracyclo-3-dodecene, 9-ethyl-11,12- Dimethyltetracyclo-3-dodecene, 9-isobutyl-11,12-dimethyltetracyclo-3-dodecene, 5,8,9,10-
Tetramethyltetracyclo-3-dodecene, 8-ethylidene tetracyclo-3-dodecene, 8-ethylidene-9
-Methyltetracyclo-3-dodecene, 8-ethylidene-9-ethyltetracyclo-3-dodecene, 8-ethylidene-9-isopropyltetracyclo-3-dodecene,
8-ethylidene-9-butyltetracyclo-3-dodecene, 8-n-propylidenetetracyclo-3-dodecene, 8-n-propylidene-9-methyltetracyclo-
3-dodecene, 8-n-propylidene-9-ethyltetracyclo-3-dodecene, 8-n-propylidene-9-
Isopropyltetracyclo-3-dodecene, 8-n-propylidene-9-butyltetracyclo-3-dodecene,
8-isopropylidenetetracyclo-3-dodecene, 8
-Isopropylidene-9-methyltetracyclo-3-dodecene, 8-isopropylidene-9-ethyltetracyclo-3-dodecene, 8-isopropylidene-9-isopropyltetracyclo-3-dodecene, 8-isopropylidene-9 -Butyltetracyclo-3-dodecene, 8-chlorotetracyclo-3-dodecene, 8-bromotetracyclo-3-dodecene, 8-fluorotetracyclo-3-
Dodecene, 8,9-dichlorotetracyclo-3-dodecene, hexacyclo-4-heptadecene, 12-methylhexacyclo-4-heptadecene, 12-ethylhexacyclo-4-heptadecene, 12-isobutylhexacyclo-4-heptadecene, 1,6,10-trimethyl-1
2-isobutylhexacyclo-4-heptadecene, octacyclo-5-dococene, 15-methyloctacyclo-
5-dococene, 15-ethyloctacyclo-5-dococene, pentacyclo-4-hexadecene, 1,3-dimethylpentacyclo-4-hexadecene, 1,6-dimethylpentacyclo-4-hexadecene, 15,16-dimethylpenta Cyclo-4-hexadecene, heptacyclo-5
-Eicosene, heptacyclo-5-heneicosene, pentacyclo-4-pentadecene, 1,3-dimethylpentacyclo-4-pentadecene, 1,6-dimethylpentacyclo-4-pentadecene, 14,15-dimethylpentacyclo-4-pentadecene , Pentacyclo-4,10
-Pentadecadiene and the like.

Examples of styrene derivatives include styrene, o-methylstyrene, m-methylstyrene and p.
-Methylstyrene, α-methylstyrene, o-chlorostyrene, m-chlorostyrene, p-chlorostyrene, o
-Ethylstyrene, m-ethylstyrene, p-ethylstyrene, p-methoxystyrene, p-chloroethylstyrene, p-methyl-α-methylstyrene and the like are used. In addition, these can also be used as a mixture of 2 or more types.

Other examples of the amorphous polyolefin include those represented by the following general formula.

[Chemical 2] (However, in the formula, n is 0 or a positive integer of 1 or more, m is a positive integer of 1 or more, and R _{1 to} R ₄ are hydrogen atoms or hydrocarbon groups.)

Examples of the above-mentioned tetracyclo-3-dodecene or its derivative are tetracyclo-3-dodecene, 5,10-dimethyltetracyclo-3-dodecene,
2,10-dimethyltetracyclo-3-dodecene, 1
1,12-dimethyltetracyclo-3-dodecene, 2,
7,9-Trimethyltetracyclo-3-dodecene, 9-
Ethyl-2,7-dimethyltetracyclo-3-dodecene, 9-isobutyl-2,7-dimethyltetracyclo-
3-dodecene, 9,11,12-trimethyltetracyclo-3-dodecene, 9-ethyl-11,12-dimethyltetracyclo-3-dodecene, 9-isobutyl-11,
12-dimethyltetracyclo-3-dodecene, 5,8,
9,10-tetramethyltetracyclo-3-dodecene,
8-methyltetracyclo-3-dodecene, 8-ethyltetracyclo-3-dodecene, 8-propyltetracyclo-3-dodecene, 8-hexyltetracyclo-3-dodecene, 8-stearyltetracyclo-3-dodecene,
8,9-Dimethyltetracyclo-3-dodecene, 8-methyl-9-ethyltetracyclo-3-dodecene, 8-cyclohexyltetracyclo-3-dodecene, 8-isobutyltetracyclo-3-dodecene, 8-butyltetra Cyclo-3-dodecene, 8-ethylidene tetracyclo-3
-Dodecene, 8-ethylidene-9-methyltetracyclo-3-dodecene, 8-ethylidene-9-ethyltetracyclo-3-dodecene, 8-ethylidene-9-isopropyltetracyclo-3-dodecene, 8-ethylidene-9 −
Butyltetracyclo-3-dodecene, 8-n-propylidene tetracyclo-3-dodecene, 8-n-propylidene-9-methyltetracyclo-3-dodecene, 8-n-
Propylidene-9-ethyltetracyclo-3-dodecene, 8-n-Propylidene-9-isopropyltetracyclo-3-dodecene, 8-n-Propylidene-9-butyltetracyclo-3-dodecene, 8-Isopropylidenetetracyclo -3-dodecene, 8-isopropylidene-
9-methyltetracyclo-3-dodecene, 8-isopropylidene-9-ethyltetracyclo-3-dodecene, 8
-Isopropylidene-9-isopropyltetracyclo-
3-dodecene, 8-isopropylidene-9-butyltetracyclo-3-dodecene and the like can be mentioned.

Examples of bicyclohept-2-ene and its derivatives include bicyclohept-2-ene and 6
-Methylbicyclohept-2-ene, 5,6-dimethylbicyclohept-2-ene, 1-methylbicyclohept-2-ene, 6-ethylbicyclohept-2-ene, 6
Examples include -n-butylbicyclohept-2-ene, 6-isobutylbicyclohept-2-ene, and 7-methylbicyclohept-2-ene. These can also be used as a mixture of two or more kinds.

The high density polyethylene (E) used in the present invention has a density of 0.94 to 0.98 (g / ml), and among them, 0.96 to 0.98 (g / ml) is preferably used.
Further, the water vapor permeability is 1.0 (g / m ² · 24 hr / 0.1 mm) or less, and a low one is preferably used. Regarding the refractive index, those having similar refractive indices are preferably used depending on the amorphous polyolefin to be combined. The modified crystalline polyolefin (A) used as a raw material of the compatibilizing agent of the present invention is a method of graft-copolymerizing an unsaturated carboxylic acid or its derivative with a polyolefin resin such as polyethylene or polypropylene, or copolymerizing with an olefin monomer. It is obtained by Examples of the unsaturated carboxylic acid or its derivative used in the present invention include unsaturated dicarboxylic acids such as acrylic acid, methacrylic acid, maleic acid, fumaric acid and their acid halides, amides, imides, acid anhydrides and esters. And the like. Among these, maleic acid, nadic acid or their acid anhydrides are preferably used. As a method for graft-copolymerizing an unsaturated carboxylic acid or a derivative thereof onto a modified crystalline polyolefin (A) base resin, various known methods can be used. For example, modified crystalline polyolefin (A) base resin A method of adding an unsaturated carboxylic acid or its derivative and a polymerization initiator such as an organic peroxide, an organic perester, or an azo compound to the mixture, melt-kneading and copolymerizing it, or dissolving it in a solvent and copolymerizing it by a heating reaction can be mentioned. To be

The hydrogenated block copolymer (B) containing an acid anhydride group used as a raw material for the compatibilizing agent of the present invention is not particularly limited and is a commercially available product. -Ethylene / butylene-styrene block copolymer, maleic anhydride-modified styrene-ethylene / propylene-styrene block copolymer and the like can be mentioned. The acid anhydride-modified block copolymer (B) of the present invention is obtained by subjecting the block copolymer before hydrogenation to an acid anhydride having an unsaturated double bond. Modified amorphous polyolefin (C) containing an epoxy group in the molecule used as a raw material for the compatibilizing agent of the present invention
Is obtained by graft-copolymerizing an epoxy compound having an unsaturated double bond group with the above-mentioned amorphous polyolefin resin as a base. As the compound having an unsaturated double bond group used in the present invention, for example, glycidyl acrylate, glycidyl methacrylate, allyl glycidyl ether and the like are preferably used. As a method for graft-copolymerizing an epoxy compound having an unsaturated double bond group on the base resin of the modified amorphous polyolefin (C), various known methods can be used. For example, the modified amorphous polyolefin ( Glycidyl methacrylate and a polymerization initiator such as an organic peroxide, an organic perester, and an azo compound are added to the base resin of C), and the mixture is melt-kneaded and copolymerized, or dissolved in a solvent and copolymerized by heating reaction. Can be mentioned. The compatibilizing agent of the present invention is a modified crystalline polyolefin (A) having a carboxylic acid anhydride group and / or a carboxylic acid group in the molecule.
Alternatively, a composition comprising 90% by weight to 10% by weight of a specific hydrogenated block copolymer (B) containing an acid anhydride group and 10 to 90% by weight of a modified amorphous polyolefin (C) containing an epoxy group is used. It can be obtained by melting and reacting at 200 to 250 ° C. for 5 to 30 minutes with a pressure kneader or Banbury mixer. Since a remarkable increase in torque is observed during melt-kneading, the modified crystalline polyolefin (A) containing a carboxylic acid group and / or an acid anhydride group or a specific hydrogenated block copolymerization containing an acid anhydride group It is considered that some reaction has occurred between the combination (B) and the epoxy-modified amorphous polyolefin (C). In the compatibilizing agent of the present invention, a carboxylic acid- and / or acid anhydride-modified crystalline polyolefin (A) or a specific hydrogenated block copolymer (B) containing an acid anhydride group and an epoxy-modified amorphous polyolefin (C) Is mixed in the range of 90:10 to 10: 90% by weight, preferably 70:30 to 30: 70% by weight, and more preferably 60:40 to 40: 60% by weight. The compounding ratio of the carboxylic acid and / or acid anhydride modified crystalline polyolefin (A), the specific hydrogenated block copolymer (B) containing an acid anhydride group or the epoxy modified amorphous polyolefin (C) is 10% by weight. When it is below the range, the effect of improving the compatibility decreases.

In the polymer alloy sheet for packaging highly moisture-proof chemicals according to the present invention, the amorphous polyolefin (D) having a heat distortion temperature of 100 ° C. or less is 80 to 45% by weight, preferably 6
5 to 45% by weight, high density polyethylene (E) 20 to 55
It should be compounded in the range of 35% by weight, preferably 35 to 55% by weight. When the content of the component (D) is less than 45% by weight, the moldability, moisture resistance and rigidity are insufficient, and
When it is more than 0% by weight, favorable properties in impact resistance cannot be obtained. If it is more than 65% by weight, oil resistance and chemical resistance tend to be lowered. Further, the compatibilizer of the present invention is 0.1 to 10 with respect to 100 parts by weight of the mixture of the amorphous polyolefin (D) and the high density polyethylene (E).
It must be compounded in the range of parts by weight. When the compounding amount of the compatibilizing agent is less than 0.1 part by weight, the effect of improving the compatibility becomes insufficient, and when it exceeds 10 parts by weight, the compatibility becomes too good and the characteristics deteriorate. Thus, the mixture 10 of the amorphous polyolefin (D) and the high density polyethylene (E)
By blending the compatibilizing agent of the present invention in an amount of 0.1 to 10 parts by weight with respect to 0 parts by weight and further melt-kneading, the compatibility of both polymers is improved, the adhesiveness at the interface, the mechanical properties, Although the transparency and the like are remarkably improved, the reason is that the compatibilizing agent of the present invention has the components of both polymers in the same molecule. It is considered that it is possible to obtain a microphase-separated structure with good adhesion. In addition, if necessary, compatibilizers, additives such as dyes and pigments, stabilizers, plasticizers, antistatic agents, ultraviolet absorbers, antioxidants, lubricants, fillers and flexibility, as long as they do not impair the basic properties. It is also possible to add an elastomer or the like for imparting. The polymer alloy sheet for packaging highly moisture-proof chemicals according to the present invention can be easily processed into a film, sheet or the like by a processing method used for a usual thermoplastic resin sheet, for example, extrusion molding.

[0016]

EXAMPLES The present invention will be described below with reference to examples, but these are merely examples and the present invention is not limited thereto. Reference Example The compatibilizer used in this example was synthesized according to the following example. <Synthesis of Compatibilizer (a)> Amorphous Polyolefin Resin Apel APL6011 [Mitsui Petrochemical Industry Co., Ltd.] 100
10 parts by weight of glycidyl methacrylate, based on parts by weight,
After thoroughly mixing 1 part by weight of dicumyl peroxide (hereinafter abbreviated as DCP) with a Henschel mixer, melt kneading was carried out at about 270 ° C. with a biaxial kneader to carry out a graft reaction to obtain a modified amorphous polyolefin. When the amount of glycidyl methacrylate graft of this resin was examined, it was found that 1.8% of glycidyl methacrylate graft was grafted (epoxy g equivalent: about 0.13 mmol / g). 100 parts by weight of this epoxy-modified amorphous polyolefin is added to ethylene / ethyl acrylate / maleic anhydride terpolymer Bondine R HX8020 [Sumitomo Chemical Industries, Ltd.
(Manufactured by Co., Ltd.), 42 parts by weight of the mixture were added, thoroughly mixed with a Henschel mixer, melt-kneaded with a pressure kneader at about 270 ° C. for 20 minutes, sheeted with rolls, and cooled to room temperature,
The compatibilizer (a) of the present invention was obtained by pelletizing with a sheet pelletizer. As a result of investigating the infrared absorption spectrum of the compatibilizing agent (a), the characteristic absorption of the acid anhydride group and the epoxy group contained in the raw material disappeared, and a reaction occurred between the acid anhydride group and the epoxy group. It is believed that

<Synthesis of Compatibilizer (b)> Amorphous Polyolefin Resin Apel APL6509 [Mitsui Petrochemical Industry]
Co., Ltd.] 100 parts by weight of glycidyl methacrylate and 8 parts by weight of DCP and 1 part by weight of DCP are sufficiently mixed in a Henschel mixer, and then melt-kneaded at about 240 ° C. in a biaxial kneader to cause graft reaction and epoxy modified amorphous A polyolefin was obtained. When the epoxy graft amount of this resin was examined, 1.2% of the resin was grafted with glycidyl methacrylate (epoxy equivalent: about 0.09 mmol / g).
I found out. To 100 parts by weight of this epoxy-modified amorphous polyolefin, maleic anhydride-modified styrene-ethylene / butylene-styrene block copolymer Tuftec R was added.
After adding 60 parts by weight of M-1913 (manufactured by Asahi Kasei Co., Ltd.), thoroughly mixing with a Henschel mixer, melt kneading with a pressure kneader at about 240 ° C. for 15 minutes, forming into a sheet with a roll, and cooling to room temperature. Then, the mixture was pelletized with a sheet pelletizer to obtain the compatibilizing agent (b) of the present invention. Compatibilizer (b)
As a result of examining the infrared absorption spectrum of, the characteristic absorption of the acid anhydride group and the epoxy group contained in the raw material disappeared, and it is considered that a reaction occurred between the acid anhydride group and the epoxy group.

0.25 mm for measuring the sheet characteristics
Using the T-die sheet of, the light transmittance, and HAZE
Is based on ASTM-D1003, and the moisture resistance is JIS-Z0
208, condition A, temperature 25 ° C, relative humidity 9
The value was measured at 0%, and the appearance was visually determined. Regarding the oil resistance, a sheet of 5 mm square and a thickness of about 250 μ was immersed in n-heptane, and the appearance change (swelling etc.) after leaving at 23 ° C. for 3 days, the degree of softening, the change in transparency, etc. were evaluated. The thing which did not change was marked with ◯, the thing which changed a little was marked with Δ, and the thing which changed was marked with x. The tensile test is ASTM-D638, the bending test is ASTM-D790, and the Izod impact test is A.
It is a result measured by STM-D256. The results of the blended composition and each characteristic value are shown in Tables 1 and 2. (Examples 1 and 2) As the component (D), Apel APL6509 [APO
Heat distortion temperature 72 ° C (ASTM D648 18.6
Kg / cm ² ) manufactured by Mitsui Petrochemical Industry Co., Ltd.]
As component (E), Ace Polyethylene HD F6080
V [HDPE; Density 0.961 g / cm ³ (JIS K
6760) Showa Denko KK], or the compatibilizing agent (a) or (b) was used as the compatibilizing agent. (Examples 3 to 4) As the component (D), Apel APL6011 [APO
Heat distortion temperature 95 ° C (ASTM D648 18.6
Kg / cm ² ) manufactured by Mitsui Petrochemical Industry Co., Ltd.]
As the component (E), Ace Polyethylene HD S6002
[HDPE; density 0.954 g / cm ³ (JIS K6
760) Showa Denko KK], and the compatibilizing agent (a) or (b) was used as the compatibilizing agent.

Comparative Example 1 As the component (D), Apel APL6509 [APO;
Manufactured by Mitsui Petrochemical Industry Co., Ltd.] was used. (Comparative Example 2) As the component (D), Apel APL6509 [APO
Heat distortion temperature 72 ° C (ASTM D648 18.6
Kg / cm ² ) manufactured by Mitsui Petrochemical Industry Co., Ltd.]
As component (E), Ace Polyethylene HD F6080
V [HDPE; Density 0.961 g / cm ³ (JIS K
6760) Showa Denko KK] was used. (Comparative Example 3) As the component (D), Apel APL6011 [APO
Heat distortion temperature 95 ° C (ASTM D648 18.6
Kg / cm ² ) manufactured by Mitsui Petrochemical Industry Co., Ltd.]
As the component (E), Ace Polyethylene HD S6002
[HDPE; density 0.954 g / cm ³ (JIS K6
760) Showa Denko KK] was used. (Comparative Example 4) As the component (D), Apel APL6011 [APO
Heat distortion temperature 95 ° C (ASTM D648 18.6
Kg / cm ² ) manufactured by Mitsui Petrochemical Industry Co., Ltd.]
As the component (E), Ace Polyethylene HD S6002
[HDPE; density 0.954 g / cm ³ (JIS K6
760) Showa Denko KK], and the compatibilizing agent (a) was used as the compatibilizing agent. (Comparative Example 5) As the component (D), Apel APL6509 [APO
Heat distortion temperature 72 ° C (ASTM D648 18.6
Kg / cm ² ) manufactured by Mitsui Petrochemical Industry Co., Ltd.]
As component (E), Ace Polyethylene HD F6080
V [HDPE; Density 0.961 g / cm ³ (JIS K
6760) Showa Denko KK], and the compatibilizing agent (b) was used as the compatibilizing agent.

[0020]

[0021]

[0022]

EFFECT OF THE INVENTION The polymer alloy sheet for packaging highly moisture-proof chemicals according to the present invention can be easily obtained by a processing method used for ordinary thermoplastic resins such as injection molding and extrusion molding, and also as a sheet for PTP. It can be easily molded according to the shape of tablets by conventional molding methods, and has a good balance of physical properties, appearance, moldability, moisture resistance, transparency, and impact resistance.
Excellent in oil resistance.

Claims (8)

[Claims] 1. A modified crystalline polyolefin (A) having a carboxylic acid anhydride group and / or a carboxylic acid group in the molecule.
Alternatively, a hydrogenated block copolymer obtained by hydrogenating a block copolymer comprising at least one vinyl aromatic compound-based polymer block and at least one conjugated diene compound-based polymer block A mixture of 90% by weight to 10% by weight of a combined carboxylic acid anhydride modified product (B) and 10% by weight to 90% by weight of a modified amorphous polyolefin (C) having an epoxy group in the molecule is melt-reacted. A compatibilizer characterized by the following. 2. The compatibilizer according to claim 1 is added to 100 parts by weight of a mixture of an amorphous polyolefin (D) and a high-density polyethylene (E) having a heat distortion temperature of 100 ° C. or less.
A polymer alloy sheet for packaging highly moisture-proof chemicals, characterized by containing 10 to 10 parts by weight. 3. A blending ratio of the amorphous polyolefin (D) and the high-density polyethylene (E) is 80% by weight: 20% by weight.
45% by weight: 55% by weight, The polymer alloy sheet for packaging highly moisture-proof chemicals according to claim 2. 4. A blending ratio of the amorphous polyolefin (D) and the high density polyethylene (E) is 65% by weight: 35% by weight.
The polymer alloy sheet for packaging highly moisture-proof chemicals according to claim 2, which has good oil resistance, characterized in that the content is from 45% by weight to 55% by weight. 5. The high density polyethylene (E) has a density of 0.
It is 960 or more, Claim 2, 3 or 4 characterized by the above-mentioned.
A polymer alloy sheet for packaging a highly moisture-proof chemical as described above. 6. The amorphous polyolefin (D) comprises an addition reaction product of cyclopentadiene or its derivative and norbornadiene or its derivative, and one or more unsaturated monomers selected from ethylene, butadiene or styrene derivatives. A polymer alloy sheet for packaging highly moisture-proof chemicals according to claim 2, which is a copolymer thereof with or a hydrogenated product thereof. 7. The amorphous polyolefin (D) comprises an addition reaction product of dicyclopentadiene or a derivative thereof and ethylene, and one or more unsaturated monomers selected from ethylene, butadiene or styrene derivatives. Copolymer A polymer alloy sheet for packaging highly moisture-proof chemicals according to claim 2, 3, 4 or 5. 8. The amorphous polyolefin (D) is a hydrogenated product of a ring-opening polymer composed of tetracyclo-3-dodecene or its derivative and bicyclohept-2-ene or its derivative. Alternatively, the polymer alloy sheet for packaging highly moisture-proof chemicals according to item 5.