JPH05311012A - Polyolefin resin composition - Google Patents

Abstract

PURPOSE:To provide a polyolefin resin compsn. which is excellent in moldability and gives a molded article excellent in impact resistance, stiffness, and surface properties. CONSTITUTION:The compsn. contains 100 pts.wt. polyolefin, 0.1-100 pts.wt. epoxidized graft copolymer of core-shell type, and 0.05-50 pts.wt. epoxidized vinyl copolymer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyolefin resin composition which is excellent in processability and has a molded body which is excellent in impact resistance, rigidity and surface property.

[0002]

2. Description of the Related Art Polyolefin is widely used because it is inexpensive and has excellent physical properties. But,
For example, polypropylene has the following drawbacks.

1) When formed into a molded product, it has low impact resistance at low temperatures.

2) When formed into a molded body, its rigidity is lower than that of polystyrene, polyvinyl chloride, ABS resin and the like.

3) The viscosity and the tension at the time of melting are low, and therefore, the thermoformability (hereinafter abbreviated as thermoformability) when the sheet is formed into a sheet under vacuum, and the calender forming,
Poor moldability during blow molding or foam molding.

4) When formed into a molded product, the surface property is low. Here, "surface property" means the gloss of the surface of the molded product,
Hardness and coatability on the surface.

In order to improve the impact resistance of the polyolefin molded article, a method of mechanically mixing a rubber component such as ethylene-propylene rubber with the polyolefin, or a rubber component is introduced into the polyolefin by polymerization such as block copolymerization. The method is widely and generally practiced. But,
In the above method, since it is difficult to sufficiently control the particle size of the rubber component to be dispersed, the use efficiency of the rubber component becomes low. As a result, a polyolefin molded product having sufficient impact resistance cannot be obtained. further,
Since many rubber components are required, the rigidity of the obtained polyolefin molded product is low. Furthermore, since the rubber component to be dispersed has a large particle diameter, the surface gloss of the obtained polyolefin molded article is low.

Conventionally, the core-shell type deforming agent has been widely used for improving the impact resistance of molded articles such as polyvinyl chloride resins. This core-shell type modifier can efficiently disperse a rubber component (core part) having a preset particle diameter, so that the resulting molded article is prevented from having low rigidity, and has a high impact resistance. It is possible to improve the sex. However, the use of non-polar polyolefins has been limited due to their poor compatibility with core-shell type modifiers. A method of adding a core-shell type modifier to a polyolefin in the presence of a specific compatibilizing agent has been disclosed (JP-A-3-185037, US Pat. No. 4,997,884). It is complicated, and there are problems such as an increase in cost due to the use of a compatibilizer and a complicated system.

As a method of improving the processability of the polyolefin, there is a method of increasing the molecular weight of the polyolefin to prevent the viscosity and tension of the polyolefin from being lowered during melting and improve the processing. But,
This method cannot adopt molding methods such as extrusion molding and injection molding, which are important processing methods for polyolefins.

[0010]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a polyolefin resin composition which is excellent in processability and whose molded product has excellent impact resistance, rigidity and surface property.

[0011]

The polyolefin resin composition of the present invention comprises a polyolefin, a core-shell graft copolymer having an epoxy group, and a vinyl copolymer having an epoxy group. 10
0.1 to 100 parts by weight of the epoxy group-containing core-shell graft copolymer and 0.05 to 50 parts by weight of the epoxy group-containing vinyl copolymer with respect to 0 parts by weight. As a result, the above object is achieved.

Next, the present invention will be described in detail.

The polyolefin resin composition of the present invention is
It contains a polyolefin, a core-shell type graft copolymer having an epoxy group, and a vinyl type copolymer having an epoxy group.

As the above-mentioned polyolefin, polypropylene, high density, low density or linear low density polyethylene,
Poly-1-butene, polyisobutylene, a copolymer of ethylene and propylene, an ethylene-propylene-diene terpolymer having a diene component of 10% by weight or less, polymethylpentene, ethylene, or a propylene-vinyl compound ( Examples thereof include random, block or graft copolymers (vinyl compound content is 50% by weight or less) with vinyl acetate, methacrylic acid alkyl ester, acrylic acid alkyl ester or aromatic vinyl). The above-mentioned polyolefin is preferably a polyolefin containing 50% by weight or more of a propylene component.

The polyolefin preferably has at least one reactive functional group, and the reactive functional group includes a carboxyl group, an amide group, an amino group, a hydroxyl group, an acid anhydride group, an epoxy group, and the like. Carboxyl group, amide group, especially reactive with epoxy group,
Amino group and hydroxyl group are preferred. The above polyolefin contains 20% by weight of the monomer component having the above functional group.
It can be obtained by copolymerization or graft polymerization in the following proportions. The monomer having the above functional group,
Examples thereof include methacrylic acid, acrylic acid, methacrylamide, acrylamide, dimethylaminoethyl methacrylate, hydroxyethyl methacrylate, maleic anhydride, glycidyl methacrylate and glycidyl acrylate.

The above polyolefins can be used alone or in admixture of two or more.

The core-shell type graft copolymer having an epoxy group is contained in order to improve the processability of the polyolefin and the impact resistance of the molded product. This graft copolymer is a core-shell type graft copolymer in which a rubber-like polymer is used as a core, a vinyl-based hard polymer is used as a shell, and a shell component is graft-copolymerized in the presence of the core. And has an epoxy group.

The above-mentioned core-shell type graft copolymer having an epoxy group is a graft copolymer obtained by graft-copolymerizing a rubber-like polymer having an epoxy group as a core and a monomer component composed of a vinyl compound as a shell. Examples thereof include a polymer, or a rubber-like polymer as a core, and a graft copolymer obtained by graft-copolymerizing a monomer component containing an unsaturated glycidyl compound and a vinyl compound as a shell.

Examples of the unsaturated glycidyl compound contained in the monomer component include unsaturated glycidyl esters, unsaturated glycidyl ethers and epoxy alkenes, and specifically, glycidyl acrylate and glycidyl methacrylate. , Allyl glycidyl ether, itaconic acid diglycidyl ester, styrenecarboxylic acid glycidyl ester, 3,4-epoxy-1-butene and the like. Among them, glycidyl acrylate and glycidyl methacrylate are preferable.

Further, a glycidyl compound represented by the following general formula (I) can be used. The compound represented by the following general formula (I) can be produced by the method described in JP-A-60-130580.

[0021]

[Chemical 2]

(In the formula, Ar represents an aromatic hydrocarbon group having at least one glycidyloxy group and having 2 to 23 carbon atoms, and R represents a hydrogen atom or a methyl group).

The above unsaturated glycidyl compounds can be used alone or in admixture of two or more.

The content of the unsaturated glycidyl compound is
It is preferably 0.01 to 50% by weight in the monomer component. The content of the unsaturated glycidyl compound is 0.0
When it is less than 1% by weight, the compatibility between the obtained epoxy group-containing core-shell type graft copolymer and the polyolefin becomes low, so that the viscosity and the tension of the obtained polyolefin resin composition at the time of melting become low, and as a result, In some cases, the processability of the polyolefin-based resin composition and the surface property of the molded product may be insufficient. Furthermore, the rigidity and impact resistance of the molded product of the polyolefin-based resin composition may be insufficient. On the other hand, when the content of the unsaturated glycidyl compound exceeds 50% by weight, other mechanical properties of the molded product of the polyolefin-based resin composition containing the obtained epoxy group-containing core-shell type graft copolymer are There is a risk of becoming insufficient.

Examples of the vinyl compound contained in the monomer component are aromatic vinyl compounds such as styrene and α-methylstyrene; alkyl methacrylate such as methyl methacrylate, ethyl methacrylate and n-butyl methacrylate. Alkyl acrylates such as ethyl acrylate and n-butyl acrylate; acrylonitrile,
Examples thereof include unsaturated nitrile compounds such as methacrylonitrile.

The content of the vinyl compound is preferably 50 to 99.99% by weight in the monomer component. When the content of the vinyl compound is less than 50% by weight, other mechanical properties of the resulting molded product of the polyolefin resin composition containing the core-shell type graft copolymer having an epoxy group may be insufficient. There is. On the other hand, when the content of the vinyl compound exceeds 99.99% by weight, the compatibility between the obtained epoxy group-containing core-shell type graft copolymer and the polyolefin becomes low, so that the obtained polyolefin resin composition The viscosity and the tension at the time of melting become low, and as a result, the processability of the polyolefin resin composition and the surface property of the molded product thereof become insufficient. Furthermore, the rigidity and impact resistance of the molded product of the polyolefin-based resin composition may be insufficient.

As the vinyl compound, it is preferable to use at least one kind of aromatic vinyl compound and methacrylic acid alkyl ester and at least one kind of vinyl compound other than aromatic vinyl compound and methacrylic acid alkyl ester. As the aromatic vinyl compound, styrene or α-methylstyrene is preferable. The methacrylic acid alkyl ester is preferably a methacrylic acid ester having an alkyl group with 1 to 4 carbon atoms. Examples of the vinyl compound other than the aromatic vinyl compound and the methacrylic acid alkyl ester include the acrylic acid alkyl ester, the unsaturated nitrile compound and the like, and the reactivity of an acid anhydride group, a carboxyl group, an amide group, an amino group, a hydroxyl group and the like. Examples thereof include vinyl compounds having a functional group, and specific examples thereof include maleic anhydride, methacrylic acid, acrylic acid, methacrylamide, acrylamide, dimethylaminoethyl methacrylate, hydroxyethyl methacrylate, and hydroxyethyl acrylate.

In the above case, the content of at least one vinyl compound among the aromatic vinyl compound and the methacrylic acid alkyl ester is 50 to 99.9 in the monomer component.
The content of 9% by weight and at least one vinyl compound other than the aromatic vinyl compound and the methacrylic acid alkyl ester is preferably 0 to 40% by weight in the monomer component.

The content of the above-mentioned monomer component is preferably 5 to 60% by weight in the core-shell type graft copolymer having an epoxy group. If the content of the above-mentioned monomer component is less than 5% by weight, the obtained core-shell type graft copolymer having an epoxy group will be aggregated, which is not preferable. On the other hand, when the content of the above-mentioned monomer component exceeds 60% by weight, the processability of the polyolefin resin composition and the surface property of the molded article thereof may be insufficient.
Furthermore, the impact resistance of the molded product of the polyolefin-based resin composition may be insufficient.

The rubber-like polymer is a polymer having a glass transition temperature of 25 ° C. or lower, and examples thereof include polybutadiene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, and diene acrylate such as n-butyl-butadiene rubber. -Based rubber, acrylic rubber such as poly (n-butyl acrylate), 2-ethylhexyl polyacrylate,
Examples thereof include olefin rubbers such as ethylene-propylene-diene rubber and butyl rubber, and silicone rubber such as polydimethylsiloxane. Examples of the rubber polymer having an epoxy group include the above-mentioned rubber polymers having an epoxy group, and these are, for example, the unsaturated glycidyl groups described above during the synthesis of the rubber polymer. It is obtained by copolymerizing a compound. These rubber-like polymers and rubber-like polymers having an epoxy group can be used alone or in admixture of two or more.

The content of the rubber component is preferably 40 to 95% by weight in the core-shell type graft copolymer having an epoxy group. Content of the above rubber component is 4
If it is less than 0% by weight, the viscosity and tension of the obtained polyolefin resin composition at the time of melting are low, and as a result,
The processability of the polyolefin-based resin composition and the surface property of the molded product thereof may be insufficient. Furthermore, the impact resistance of the molded product of the polyolefin-based resin composition may be insufficient. On the other hand, the content of the rubber component is 95% by weight.
If it exceeds, the resulting core-shell type graft copolymer having an epoxy group will be lumped, which is not preferable.

The graft copolymer having an epoxy group is
It can be produced by an ordinary radical polymerization, and a polymerization method such as a suspension polymerization method or an emulsion polymerization method can be adopted.
From the viewpoint that it is easy to control the particle size and particle structure of the resulting graft copolymer having an epoxy group,
It is preferable to employ an emulsion polymerization method. During the manufacturing process,
The particles may be enlarged by adding an acid, a salt, a coagulant or the like. The particle diameter of the obtained graft copolymer having an epoxy group is preferably 3 μm or less because the polyolefin resin composition containing the obtained graft copolymer having an epoxy group has good surface properties.

The above-mentioned vinyl copolymer having an epoxy group mainly contains an unsaturated glycidyl compound and a vinyl compound.

Examples of the unsaturated glycidyl compound include the same compounds as described above, and among them, glycidyl acrylate or glycidyl methacrylate is preferable.

The content of the unsaturated glycidyl compound is
0.01 to 5 in the vinyl copolymer having an epoxy group
It is preferably 0% by weight. When the content of the unsaturated glycidyl compound is less than 0.01% by weight, the compatibility between the obtained vinyl copolymer having an epoxy group and the polyolefin becomes low, so that the obtained polyolefin resin composition is melted. The viscosity and tension at that time may be low, and as a result, the processability of the polyolefin-based resin composition and the surface property of the molded product may be insufficient. further,
The rigidity of the molded product of the polyolefin-based resin composition may be insufficient. On the other hand, when the content of the unsaturated glycidyl compound exceeds 50% by weight, other mechanical properties of the resulting molded product of the polyolefin-based resin composition containing the vinyl copolymer having an epoxy group are unsatisfactory. There is a fear that it will be enough.

Examples of the vinyl compound include the same compounds as described above.

The content of the above vinyl compound is 50 to 99.99% by weight in the vinyl copolymer having an epoxy group.
Is preferred. When the content of the vinyl compound having an epoxy group is less than 50% by weight, other mechanical properties of the obtained molded product of the polyolefin resin composition containing the vinyl copolymer having an epoxy group are insufficient. There is a risk that On the other hand, when the content of the vinyl compound exceeds 99.99% by weight, the compatibility of the obtained vinyl copolymer having an epoxy group with the polyolefin becomes low, so that the obtained polyolefin resin composition is melted. Viscosity and tension are low, resulting in
The processability of the polyolefin-based resin composition and the surface property of the molded product thereof are insufficient. Further, the rigidity of the molded product of the polyolefin resin composition may be insufficient.

As the vinyl compound, it is preferable to use at least one kind of aromatic vinyl compound and methacrylic acid alkyl ester and at least one kind of vinyl compound other than aromatic vinyl compound and methacrylic acid alkyl ester. Examples of the aromatic vinyl compound and the methacrylic acid alkyl ester include the same compounds as described above.

In the above case, the content of at least one vinyl compound among the aromatic vinyl compound and the alkyl methacrylate is 50 to 99.9 in the monomer component.
The content of 9% by weight and at least one vinyl compound other than the aromatic vinyl compound and the methacrylic acid alkyl ester is preferably 0 to 40% by weight in the monomer component.

In the polyolefin resin composition of the present invention,
With respect to 100 parts by weight of the polyolefin, the core-shell type graft copolymer having the epoxy group is 0.1.
To 100 parts by weight, preferably 0.5 to 70 parts by weight. When the content of the core-shell type graft copolymer having an epoxy group is less than 0.1 part by weight,
The viscosity and tension of the obtained polyolefin resin composition at the time of melting become low, and as a result, the processability of the polyolefin resin composition becomes insufficient. Further, the impact resistance of the molded product of the polyolefin resin composition becomes insufficient. On the other hand, when the content of the core-shell type graft copolymer having the epoxy group exceeds 100 parts by weight, the original properties of the molded product of the polyolefin resin composition obtained, that is, heat resistance and the like are lowered. .

In the polyolefin resin composition of the present invention,
The epoxy group-containing vinyl copolymer is contained in an amount of 0.05 to 50 parts by weight, preferably 0.05 to 30 parts by weight, based on 100 parts by weight of the polyolefin. When the content of the vinyl copolymer having an epoxy group is less than 0.05 parts by weight, the viscosity and tension of the obtained polyolefin resin composition at the time of melting are low, and as a result, the polyolefin resin composition The workability and the surface property of the molded product are insufficient. Further, the rigidity of the molded product of the polyolefin resin composition becomes insufficient. On the other hand, when the content of the vinyl copolymer having an epoxy group is more than 100 parts by weight, other mechanical property characteristics of the obtained molded product of the polyolefin resin composition are insufficient.

The polyolefin resin compound of the present invention is
If necessary, an inorganic filler such as calcium carbonate or talc; a stabilizer; a lubricant or the like may be contained. further,
If necessary, it is possible to contain a core-shell type impact resistance improver or processability improver conventionally used in polyvinyl chloride resins.

A graft copolymer having an epoxy group,
As a method for mixing the polyolefin with the vinyl copolymer having an epoxy group, a conventionally well-known method such as extrusion kneading or roll kneading can be adopted. Further, multi-step mixing such as mixing a graft copolymer having an epoxy group and a vinyl-based copolymer having an epoxy group with a part of the polyolefin and then further mixing the remaining polyolefin can be adopted. .

In the present invention, the workability of the polyolefin-based resin means the thermoformability of the resin when the polyolefin-based resin is molded into a sheet under vacuum, or when pressure-molded under vacuum (hereinafter, thermoformability). Abbreviated) and calender molding, blow molding, foam molding or extrusion molding.

In the present invention, impact resistance means injection molding,
The present invention relates to impact resistance of a molded article formed by all molding methods for polyolefin resins such as extrusion molding, thermoforming, calender molding, blow molding, and foam molding.

In the present invention, the rigidity and surface property are the rigidity and the surface of a molded product formed by all molding methods relating to a polyolefin resin such as injection molding, extrusion molding, thermoforming, calender molding, blow molding and foam molding. Regarding sex

[0047]

The core-shell type graft copolymer and the vinyl copolymer used in the present invention have an epoxy group. Therefore, the compatibility between the polar core-shell type graft copolymer and the vinyl copolymer and the nonpolar polyolefin is improved. Therefore, by incorporating the core-shell type graft copolymer and the vinyl-based copolymer into the polyolefin, the viscosity and the tension of the obtained polyolefin-based resin composition at the time of melting are significantly increased, and as a result, the polyolefin-based resin is obtained. The processability of the composition and the surface property of the molded product are improved. At the same time, the impact resistance and rigidity of the molded product of the polyolefin resin composition are improved.

Further, by using a polyolefin having at least one reactive functional group, a core-shell type graft copolymer having an epoxy group, and a vinyl-based copolymer having an epoxy group, the polyolefin and the epoxy group are used. Since the compatibility with the core-shell type graft copolymer having and the vinyl copolymer having an epoxy group is further improved, the processability of the polyolefin resin composition and the surface property of the molded product, impact resistance and The rigidity is further improved.

[0049]

EXAMPLES Next, the present invention will be described with reference to Examples and Comparative Examples.

Example 1 <Preparation of core-shell type graft copolymer having epoxy group> 70 parts by weight (solid content) of polybutadiene rubber latex having a particle diameter of 2500 Å, 1 part by weight of glycidyl methacrylate, 15 parts by weight of methyl methacrylate and Monomer component 30 consisting of 14 parts by weight of styrene
Graft copolymerization with 1 part by weight was carried out by ordinary emulsion polymerization. The particle size was 2600 angstroms and the final conversion was 98%. The latex of the obtained copolymer was salted out by a usual method, dehydrated and dried to obtain a powder of a core-shell type graft copolymer having an epoxy group.

<Preparation of Vinyl Copolymer Having Epoxy Group> A vinyl copolymer having an epoxy group consisting of 3 parts by weight of glycidyl methacrylate, 50 parts by weight of methyl methacrylate and 47 parts by weight of styrene is subjected to a usual emulsion polymerization method. Was polymerized. The particle size was 1000 Å and the final conversion was 98%. The latex of the obtained copolymer was salted out by a conventional method, dehydrated and dried to obtain a vinyl copolymer powder having an epoxy group.

20 parts by weight of the obtained core-shell type graft copolymer powder having an epoxy group and 10 parts by weight of the obtained vinyl copolymer powder having an epoxy group were added to polypropylene (Hypol-B-200, Mitsui Petrochemical Co., Ltd.). 100 parts by weight), and the mixture was roll-kneaded at 200 ° C. and press-molded to obtain a test piece. For each test piece, an Izod impact resistance test was performed according to ASTM-D256, and a bending elasticity test was performed according to ASTM-D790. Further, the surface gloss of the test piece was visually evaluated in the following stages. The results are shown in Table 4.

○: Very glossy Δ: Glossy ×: Almost no gloss

Separately, 20 parts by weight of the core-shell type graft copolymer powder having the epoxy group and 10 parts by weight of the vinyl copolymer powder having the epoxy group are mixed in the same manner as above, and The mixture was extruded and kneaded under the conditions of 200 ° C. and 40 rpm using an extruder of Brabender Plasticorder made by Brabender Co., and pelletized. About the obtained pellets, using a Capillograph (manufactured by Toyo Seiki), 200 ° C., die diameter 2 mm × length 10 mm, extrusion speed 20 mm /
And the melt tension was measured under the conditions of a take-off speed of 1 m / min. The results are shown in Table 4.

Comparative Example 1 A test piece and a pellet were obtained in the same manner as in Example 1 except that polypropylene (Hypol-B-200, manufactured by Mitsui Petrochemical Co., Ltd.) was used as the composition, and these were subjected to the same test as in Example 1. The results are shown in Table 4.

Comparative Example 2 Test pieces and pellets were obtained in the same manner as in Example 1 except that polypropylene (Hipol-J-440, manufactured by Mitsui Petrochemical Co., Ltd.) alone was used as a composition. The results are shown in Table 4.

Examples 2 to 5 and Comparative Examples 3 to 5 The composition of the core-shell type graft copolymer was set to the composition shown in Table 1 and the composition of the vinyl-based copolymer was set to the composition shown in Table 2, and Test pieces and pellets were obtained in the same manner as in Example 1 except that the polymer was mixed with the polyolefin in the proportions shown in Table 3, and the results of the same tests as in Example 1 are shown in Table 4.

[0058]

[Table 1]

[0059]

[Table 2]

[0060]

[Table 3]

[0061]

[Table 4]

From Table 4, the polyolefin-based resin compositions of Examples 1 to 5 have higher melt tension and better workability than the polyolefin-based resin compositions of Comparative Examples 1 to 5. Further, the molded products of the polyolefin resin compositions of Examples 1 to 5 have better impact resistance, flexural modulus, surface gloss, etc. than the molded products of the polyolefin resin compositions of Comparative Examples 1 to 5. I understand.

[0063]

As is apparent from the above description, the core-shell type graft copolymer having an epoxy group and the vinyl type copolymer having an epoxy group used in the present invention have high compatibility with a polyolefin. The viscosity and tension of the polyolefin-based resin composition at the time of melting are increased, and as a result, the processability of the polyolefin-based resin composition and the surface properties, impact resistance, and rigidity of the molded article thereof are also excellent.

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Claims (13)

[Claims] 1. A polyolefin resin composition comprising a polyolefin, a core-shell type graft copolymer having an epoxy group, and a vinyl type copolymer having an epoxy group, which is added to 100 parts by weight of the polyolefin. On the other hand, the core-shell type graft copolymer having the epoxy group is contained in a proportion of 0.1 to 100 parts by weight, and the vinyl-based copolymer having an epoxy group is contained in a proportion of 0.05 to 50 parts by weight. A polyolefin resin composition comprising: 2. The core-shell type graft copolymer having an epoxy group contains 40 to 95% by weight of a rubbery polymer having an epoxy group and 5 to 60% by weight of a monomer component containing a vinyl compound. The polyolefin resin composition according to claim 1, wherein the polyolefin resin composition is a graft copolymer containing 10% by weight. 3. The core-shell type graft copolymer having an epoxy group comprises 40 to 95% by weight of a rubber-like polymer.
And 60 to 5% by weight of a monomer component containing 0.01 to 50% by weight of an unsaturated glycidyl compound and 50 to 99.99% by weight of a vinyl compound, which is a graft copolymer. The polyolefin resin composition described. 4. The monomer component comprises 0.01 to 50% by weight of an unsaturated glycidyl compound, 50 to 99.% of at least one selected from the group consisting of aromatic vinyl compounds and methacrylic acid alkyl esters. The polyolefin resin composition according to claim 3, which contains 99% by weight and 0 to 40% by weight of at least one vinyl compound other than the aromatic vinyl compound and the methacrylic acid alkyl ester. 5. The polyolefin system according to claim 1, wherein the vinyl copolymer having an epoxy group contains 0.01 to 50% by weight of an unsaturated glycidyl compound and 50 to 99.99% by weight of a vinyl compound. Resin composition. 6. The vinyl copolymer having an epoxy group contains 0.01 to 50% by weight of an unsaturated glycidyl compound,
At least one selected from the group of compounds consisting of aromatic vinyl compounds and alkyl methacrylates
The polyolefin resin composition according to claim 1, containing 0 to 99.99% by weight and 0 to 40% by weight of at least one vinyl compound other than the aromatic vinyl compound and the methacrylic acid alkyl ester. 7. The polyolefin resin composition according to claim 3, 4, 5 or 6, wherein the unsaturated glycidyl compound is at least one selected from the group of compounds consisting of glycidyl acrylate and glycidyl methacrylate. 8. The polyolefin resin composition according to claim 3, 4, 5 or 6, wherein the unsaturated glycidyl compound is a glycidyl compound represented by the following general formula (I). [Chemical 1] (In the formula, Ar represents an aromatic hydrocarbon group having at least one glycidyloxy group and having 6 to 23 carbon atoms, and R represents a hydrogen atom or a methyl group.) 9. The aromatic vinyl compound is at least one selected from the group of compounds consisting of styrene and α-methylstyrene, and the methacrylic acid alkyl ester has an alkyl group having 1 to 4 carbon atoms. The polyolefin resin composition according to claim 4 or 6, which is at least one kind of methacrylic acid alkyl ester. 10. The polyolefin resin composition according to claim 1, wherein the polyolefin contains at least 50% by weight of propylene. 11. The polyolefin has at least one functional group capable of reacting with epoxy groups.
The polyolefin-based resin composition described in 1. 12. A functional group capable of reacting with the epoxy group,
The polyolefin-based resin composition according to claim 11, which is a group selected from the group consisting of a carboxyl group, an amide group, an amino group and a hydroxy group. 13. The polyolefin resin composition according to claim 1, wherein the core-shell type graft copolymer having an epoxy group has an average particle size of 3 μm or less.