JPH0665425A - Resin composition - Google Patents

Abstract

PURPOSE:To provide a resin composition good in its surface layer peeling resistance, impact resistance and melt flowability and used for injection moldings, etc., by adding plural compatibilizing agents containing various rubbers, an olefinic resin, etc., to resins comprising a styrenic resin and an olefinic resin. CONSTITUTION:This resin composition comprises 100 pts.wt. of resins comprising (A) 1-99 pts.wt. of a styrenic resin and (B) 99-1 pts.wt. of an olefinic resin, and (C) 0.1-50 pts.wt. of >= two kinds of compatibilizing agents such as a polymer mixture produced by adding 1-50 pts.wt. of a functional group-rubbery polymer and (or) an olefinic polymer or by grafting 5-200 pts.wt. of a monomer group to 25-70 pts.wt. of an ethylene-propylene-diene terpolymer rubber, 25-70 pts.wt. of ethylene-vinyl acetate copolymer, 0-25 pts.wt. of a rubbery polymer and (or) an olefinic polymer, or a graft copolymer containing 95-5 pts.wt. of a polymer comprising a styrenic polymer, an alkyl (meth)acrylate polymer and vinyl chloride polymer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin composition having excellent surface layer peeling resistance, and more specifically to a resin composition having excellent impact resistance, fluidity and surface layer peeling resistance.

[0002]

2. Description of the Related Art Recently, alloying polymers having different characteristics to modify a resin has been extensively studied. For example, the following reports have been made regarding alloying of an olefin resin and a styrene resin. That is, a method of alloying with an ethylene-vinyl acetate copolymer (Japanese Patent Publication No. S60-36178), a method of alloying with a polyethylene-EPDM modified product (JP-A-63-34039, JP-A-1-165640), polypropylene and styrene. A method of alloying with a block of a base resin (JP-A-2-199127, JP-A-2-19)
9128, JP-A-2-199129) and the like.

[0003]

SUMMARY OF THE INVENTION In the above conventional method,
There is a problem that it is not suitable for practical use because the impact resistance is insufficient, or the surface layer of the molded product separates from the molded product with a slight force after molding under high shear such as injection molding. It was

An object of the present invention is to solve the above problems and to provide a resin composition excellent in impact resistance, fluidity and surface layer peeling resistance.

[0005]

Means for Solving the Problems As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that one or more ethylene-propylene-diene rubbers are added to a system in which a styrene resin and an olefin resin are blended. One or more ethylene-vinyl acetate copolymers, one or more rubber-like polymers and / or olefin-based polymers and one or more functional group-containing rubber-like polymers and / or olefin-based polymers, Compatibilizers that are at least partially interreacted compositions, one or more ethylene-propylene-diene rubbers, one or more ethylene-vinyl acetate copolymers and one or more rubbery polymers and / or olefinic systems A graft polymer obtained by impregnating a polymer mixture composed of polymers with a group of monomers containing a functional group and polymerizing. A graft copolymer composed of a compatibilizing agent, a functional group-containing styrene polymer part, and a polymer part composed of a styrene polymer, an alkyl (meth) acrylate polymer and / or a vinyl chloride polymer. A certain compatibilizer, a compatibilizer which is a block copolymer composed of an olefin polymer block and a styrene polymer block, and an olefin polymer modified with a special compound, and the special compound, respectively. When at least two compatibilizers comprising a modified styrene-based polymer, a modified methacrylate-based polymer or a modified vinyl chloride-based polymer containing a functional group which reacts with It was found that the surface resistance was not reduced and the surface layer peeling resistance was also good.

That is, the present invention is based on (C-1) :( c1) for 100 parts by weight of a total of (A) 1 to 99 parts by weight of styrene resin and (B) 99 to 1 parts by weight of olefin resin. ) 25 to 70 parts by weight of one or more ethylene-propylene-diene rubbers, (c2) 25 to 70 parts by weight of one or more ethylene-vinyl acetate copolymers, (c
3) 0 to 25 parts by weight of at least one rubber-like polymer and / or olefin polymer and (c4) 1 to 50 parts by weight of at least one functional group-containing rubber polymer and / or olefin polymer. Parts, at least one ethylene-propylene-diene rubber (c1), at least one ethylene-vinyl acetate copolymer (c2), at least one rubber-like polymer and / or olefin polymer (c3), and A compatibilizer in which the total amount of the one or more functional group-containing rubber-like polymer and / or the olefin polymer (c4) is 100 parts by weight, (C-2): (c1) one or more ethylene-propylene 25-70 parts by weight of diene rubber, (c2) 25-70 parts by weight of one or more ethylene-vinyl acetate copolymers and (c3) one or more rubbery polymers and / or olefins 0 to 25 parts by weight of polymer, one or more ethylene-propylene-diene rubber (c1), one or more ethylene-vinyl acetate copolymer (c2) and one or more rubbery polymer and / or olefin system Polymer mixture in which the total amount of the polymer (c3) is 100 parts by weight, and (c5) functional group-containing monomer group 0.05 to 50% by weight
And 50 to 99.95% by weight of monomers that can be copolymerized with these
A compatibilizer which is a graft polymer composed of 5 to 200 parts by weight of a monomer group consisting of (C-3): (c6) functional group-containing styrene polymer part 5
To 95% by weight and (c7) a styrene polymer, an alkyl (meth) acrylate polymer and / or a vinyl chloride polymer in a polymer portion of 95 to 5% by weight. Compatibilizer, (C-4): Block 5 of (c8) olefin-based polymer
~ 95% by weight and (c9) styrenic polymer block 95 ~
The amount of the compatibilizing agent which is a block copolymer composed of 5% by weight and (C-5) :( c10) a monomer having a functional group is 0.05.
To 95% by weight of a modified olefin polymer polymerized to contain 50% by weight to 0.05% of a monomer having a functional group reactive with the functional group of the monomer having the functional group.
~ 50% by weight of (c11) modified styrene-based polymer or (c12) modified methacrylate-based polymer or (c13) modified vinyl chloride-based polymer 95-
2 selected from the group consisting of compatibilizing agents consisting of 5% by weight
It relates to a resin composition containing 0.1 to 50 parts by weight of one or more compatibilizers.

[0007]

EXAMPLES Compatibilizer (C-1) used in the present invention
(C-5) is an essential component for improving the impact resistance and surface layer peeling resistance of the resin composition of the present invention. That is, the compatibilizers (C-1) to (C-5) of the present invention are essentially incompatible with each other or poorly compatible with each other like styrene-based resins and olefin-based resins. Has the effect of improving.

The compatibilizer (C-1) is (c1) 25 to 70 parts by weight of one or more ethylene-propylene-diene rubbers,
(C2) 25 to 70 parts by weight of one or more ethylene-vinyl acetate copolymer, 0 to 25 parts by weight of (c3) one or more rubber-like polymer and / or olefin polymer, and (c4) one or more The composition comprises 1 to 50 parts by weight of a functional group-containing rubbery polymer and / or an olefin-based polymer in a total of 100 parts by weight.

As the component (c1) in the compatibilizer (C-1) used in the present invention, ethylene content, propylene content, diene content, type of diene, Mooney viscosity of rubber, in rubber Although it does not particularly specify the monomer distribution state of the above, in order to improve the impact resistance of the obtained resin composition, it is composed of two different ethylene-propylene-diene rubbers, and at least one rubber has an ethylene content of at least one. : 60% or more, glass transition point: −55
C. or less, Mooney viscosity ML _{1 + 4} (100.degree. C.): 75 or more, and it is preferable to have appropriate strength. It is considered that the strength is increased because the particles are distributed in the particle size and the width of the distribution is increased by using two or more kinds of rubber.

The method for producing this rubber is known, and the degree of unsaturation can be adjusted by adjusting the diene content using a vanadium type catalyst. The standard value is 3-20 double bonds per 1000 C atoms. Mooney viscosity is generally
30 to 125, the ethylene content is 45 to 80% by weight, the propylene content is 20 to 50% by weight, and the monomer distribution state of the rubber is random.

The component (c2) is preferably an ethylene-vinyl acetate copolymer having a vinyl acetate content of 25 to 30% by weight. If the content of vinyl acetate is out of this range, impact resistance and surface layer peeling resistance decrease, which is not preferable.

A more preferred ethylene-vinyl acetate copolymer has a melt flow index of 0.5 to 25 dg.
/ Min (230 ℃, 2.16kg / cm ² ).

As the component (c3), styrene-butadiene rubber, styrene-butadiene block copolymer, acrylonitrile-butadiene rubber, polybutadiene rubber and isobutylene are used in order to improve the impact resistance or fluidity of the resin composition of the present invention. At least one selected from the group consisting of rubber, butyl rubber and polyolefin is preferable, and for the resin composition of the present invention, styrene-butadiene rubber, styrene-butadiene-block copolymer and polybutadiene rubber are preferable from the viewpoint of impact resistance. More preferable. In order to improve the compatibility between the resin compositions of the present invention, the component (c3) is a polymethylmethacrylate ester, a styrene-acrylonitrile copolymer, or a styrene-methylmethacryl ester, which has an affinity with the styrene resin. It is preferably at least one selected from the group consisting of styrene-butadiene rubber grafted with an acid ester copolymer, styrene-butadiene-block copolymer, acrylonitrile-butadiene rubber, polybutadiene rubber, isobutylene rubber, butyl rubber and polyolefin. Furthermore, from the viewpoint of impact resistance, each has compatibility with styrene resin,
More preferred are styrene-butadiene rubber, styrene-butadiene-block copolymer and polybutadiene rubber grafted with polymethylmethacrylate, styrene-acrylonitrile copolymer or styrene-methylmethacrylate copolymer.

As the component (c4), modified styrene-butadiene rubber, modified styrene-butadiene-block copolymer, modified acrylonitrile-butadiene rubber, modified polybutadiene rubber, modified isobutylene rubber, modified butyl rubber and modified polyolefin each containing a functional group. At least one selected from the group consisting of: a modified styrene-butadiene rubber, a modified styrene-butadiene-block copolymer, a modified acrylonitrile-butadiene rubber, each grafted with a functional group-containing compound and / or a functional group-containing polymer. At least one selected from the group consisting of modified polybutadiene rubber, modified isobutylene rubber, modified butyl rubber and modified polyolefin is more preferred.

As the functional group, for example, an epoxy group,
Examples thereof include a primary, secondary or tertiary amino group, an amide group, a carboxyl group, an acid anhydride group and a hydroxyl group, which may be used alone or in combination of two or more. In order to further improve the compatibility between the resin compositions of the present invention,
Epoxy groups are preferred.

Examples of the monomer capable of introducing a functional group include glycidyl acrylate, glycidyl methacrylate, allyl glycidyl ether, dimethylaminoethyl methacrylate, vinyl pyridine, t-butylaminoethyl methacrylate, acrylamide, methacrylamide, maleimide, acrylic acid, Methacrylic acid, maleic acid, maleic anhydride, allyl alcohol, 2-hydroxyethyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl methacrylate, 2-
Examples include hydroxypropyl acrylate.

Component (c4) (total 100% by weight)
The amount of the functional group to be introduced is preferably 0.01 to 50% by weight, and more preferably 0.1 to 10% by weight, as a monomer.

The compatibilizer (C-1) is 25 to 70 parts by weight of (c1) one or more ethylene-propylene-diene rubbers, and (c2) one or more ethylene-based compounds, when the total amount is 100 parts by weight. 25 to 70 parts by weight of vinyl acetate copolymer, (c
3) 0 to 25 parts by weight of at least one rubber-like polymer and / or olefin polymer and (c4) 1 to 50 parts by weight of at least one functional group-containing rubber polymer and / or olefin polymer. It is often a part, and the component (c1) 35-
65 parts by weight, component (c2) 35 to 65 parts by weight, component (c3) 1
To 20 parts by weight and (c4) component 1 to 30 parts by weight, more preferably (c1) component 35 to 65 parts by weight, (c2) component 35 to 65 parts by weight, (c3) component 0 parts by weight. And 1 to 30 parts by weight of the component (c4).

It is preferable that the ratio of the components (c1) and (c2) be as close to 1 as possible in order to improve the compatibility between the styrene resin and the olefin resin.

When the amount of the component (c1) is less than 25 parts by weight, the impact resistance is lowered, and when it exceeds 70 parts by weight, the fluidity is deteriorated.
When the amount of the component (c2) is less than 25 parts by weight, the fluidity is deteriorated and 70
If it exceeds the weight part, the impact resistance decreases. If the component (c3) or the component (c4) is out of the applicable range, the surface layer peeling resistance is deteriorated.

The component (c3) does not necessarily have to be contained, and even if it is not contained, the surface layer peeling resistance is improved.

The method for producing the compatibilizer (C-1) is not particularly limited, but the following method can be exemplified. A mixture of the respective components (c1), (c2), (c3) and (c4) is melt-kneaded at a high temperature (300 ° C. or lower) in an extruder and reacted. The lower limit of melting temperature is determined by the melting range of the component with the highest melting point. The melting range of the compatibilizer (C-1) of the present invention is 40 to 150 ° C, especially 50 to
It can be 100 ° C. One important condition in the preparation of compatibilizer (C-1) is that the components are at least partially interacted.

The compatibilizer (C-2) is (c1) 25 to 70 parts by weight of one or more ethylene-propylene-diene rubbers,
(C2) 25 to 70 parts by weight of one or more ethylene-vinyl acetate copolymers, and (c3) 0 to 25 parts by weight of one or more rubbery polymers and / or olefinic polymers, each component (c1) 0.05 to 50% by weight of a monomer group containing a functional group (c5) is prepared by suspending a polymer mixture in which the total of (c2) and (c3) is 100 parts by weight.
And 50 to 99.95% by weight of monomers that can be copolymerized with these
It is a compatibilizer obtained by impregnating the above-mentioned polymer mixture with 5 to 200 parts by weight of the monomer group consisting of and polymerizing.

In this graft polymer, the component (c
1), (c2) and (c3) become the trunk polymer.

Components (c1), (c2) and (c3)
Is the same as in the compatibilizer (C-1).

The monomer group (c5) to be impregnated in the polymer mixture and polymerized is composed of 0.05 to 50% by weight of a functional group-containing monomer group and 50 to 99.95% by weight of a copolymerizable monomer group. % Is a monomer group. Preferably, it is composed of 0.1 to 30% by weight of a functional group-containing monomer group and 70 to 99.9% by weight of a copolymerizable monomer group.

When the amount of the monomer group containing a functional group is less than 0.05% by weight, the surface layer peeling resistance is deteriorated, and when it exceeds 50% by weight, the fluidity is greatly reduced.

As the functional group, for example, an epoxy group,
Examples thereof include a primary, secondary or tertiary amino group, an amide group, a carboxyl group, an acid anhydride group and a hydroxyl group, which may be used alone or in combination of two or more. In order to further improve the compatibility between the resin compositions of the present invention,
Epoxy groups are preferred.

Examples of the monomer capable of introducing a functional group include glycidyl acrylate, glycidyl methacrylate, allyl glycidyl ether, dimethylaminoethyl methacrylate, vinyl pyridine, t-butylaminoethyl methacrylate, acrylamide, methacrylamide, maleimide, acrylic acid, Methacrylic acid, maleic acid, maleic anhydride, allyl alcohol, 2-hydroxyethyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl methacrylate, 2-
Examples include hydroxypropyl acrylate. The above compounds are used alone or in combination of two or more.

Examples of the copolymerizable monomer include aromatic vinyl compounds, vinyl cyanide compounds, alkyl (meth) acrylate compounds, vinyl halide compounds, olefin compounds and other vinyl compounds copolymerizable therewith. preferable.

Examples of the vinyl cyanide compound include acrylonitrile and methacrylonitrile, and examples of the aromatic vinyl compound include styrene, methylstyrene, chlorostyrene and α-methylstyrene, and alkyl (meth) ) Examples of the acrylate compound include methyl methacrylate, ethyl methacrylate, butyl acrylate and the like. Examples of vinyl halide compounds include vinyl chloride and vinylidene chloride, and examples of olefin compounds include ethylene,
Examples include propylene and butadiene. Any of the above compounds may be used alone or in combination of two or more.

The compatibilizer (C-2) is (c1) 25 to 70 parts by weight (c) of one or more ethylene-propylene-diene rubbers.
2) Use of a polymer mixture consisting of 25 to 70 parts by weight of one or more ethylene-vinyl acetate copolymers and (c3) 0 to 25 parts by weight of one or more rubbery polymers and / or olefinic polymers. Good, (c1) component
35-65 parts by weight, (c2) component 35-65 parts by weight and (c
3) Component 1 to 20 parts by weight is preferable, and more preferably (c
1) component 35 to 65 parts by weight, component (c2) component 35 to 65 parts by weight and component (c3) component 0 parts by weight.

It is more preferable that the ratio of the component (c1) and the component (c2) be as close to 1 as possible in order to improve the compatibility between the styrene resin and the olefin resin.

When the amount of the component (c1) is less than 25 parts by weight, the impact resistance is lowered, and when it exceeds 70 parts by weight, the fluidity is deteriorated.
When the amount of the component (c2) is less than 25 parts by weight, the fluidity is deteriorated and 70
If it exceeds the weight part, the impact resistance decreases. If the component (c3) is out of the applicable range, the surface layer peeling resistance is deteriorated.

The component (c3) does not necessarily have to be contained, and even if it is not contained, the peeling resistance to the surface layer is improved.

The method for producing the compatibilizer (C-2) is not particularly limited, but the following method can be exemplified. To the polymer mixture of each component (c1), (c2) and (c3),
A monomer group (c5) consisting of a monomer group containing a functional group and a monomer group copolymerizable therewith is impregnated and polymerized. The compatibilizer (C-2) of the present invention is, for example, a polymer mixture of the components (c1), (c2) and (c3) in an amount of 300 to 500 parts by weight of water and a dispersant per 100 parts by weight of the mixture. In a nitrogen atmosphere, 0.01 to 5 parts by weight of a radical polymerization initiator (decomposition temperature at which a half-life of 10 hours is 80 to 180 ° C.) is decomposed with respect to 100 parts by weight of a monomer group in a nitrogen atmosphere. Is not substantially caused, and the monomer group is heated (about 50 to 100 ° C.) under the condition that the polymerization does not start, and 70% by weight or more of the monomer is impregnated in the mixture in about 1 to 5 hours. Later,
The temperature of the suspension was raised to 100-150 ° C to polymerize,
Production is completed in ~ 10 hours. As the radical polymerization initiator, for example, di-t-butyl peroxide, di-cumyl peroxide, t-butyl peroxybenzoate or the like is used.

The compatibilizer (C-1) and (C-
The preferable melt flow index of 2) is 0.25 to 1.
It is 5 dg / min (230 ° C, 2.16 kg / cm ² ). This melt flow index depends on the reaction between the components, and if the reaction proceeds too much, separation occurs and the melt flow index increases. Therefore, the melt flow index is preferably 1.5 dg / min or less.

The compatibilizer (C-3) of the present invention is (c6).
Functional group-containing styrene polymer part 5 to 95% by weight (c7)
It is a graft copolymer composed of a polymer portion consisting of a styrene polymer, an alkyl (meth) acrylate polymer and / or a vinyl chloride polymer in an amount of 95 to 5% by weight.

In this graft copolymer, the component (c6) usually serves as the backbone, but the reverse is also possible.

Functional group-containing styrene polymer part (c6)
Is preferably a styrene polymer containing an epoxy group and obtained by polymerizing 50% by weight or more of an aromatic vinyl compound.

As the aromatic vinyl compound, styrene,
Examples include methylstyrene, α-methylstyrene, chlorostyrene, β-isopropylnaphthalene, and the like. 80% by weight or more of the aromatic vinyl compound is styrene, methylstyrene, α-methylstyrene, and / or β-isopropylnaphthalene. It is preferable.

Polymer part (c7) of compatibilizer (C-3)
Consists of a styrene polymer, an alkyl (meth) acrylate polymer and / or a vinyl chloride polymer.
The styrene-based polymer is preferably a copolymer of 15 to 40% by weight of a vinyl cyanide compound, 50 to 85% by weight of an aromatic vinyl compound, and 0 to 20% by weight of another vinyl compound which can be copolymerized with these. The (meth) acrylate-based polymer contains 60% by weight of methyl methacrylate as a constituent component.
It is preferable to contain the above.

The epoxy group in the compatibilizer (C-3) is preferably contained in an oxygen content of 0.03 to 5% by weight.
When the epoxy oxygen content is 0.03% by weight or less, the surface layer peeling resistance is lowered, and when it is 5% by weight or more, the fluidity is lowered.

The compatibilizer (C-3) is a functional group-containing styrene-based polymer part (c6) in an amount of 5 to 95% by weight, a styrene-based polymer, an alkyl (meth) acrylate-based polymer and / or a vinyl chloride polymer. Polymer part composed of coalesced (c7)
95 to 5% by weight, preferably 25 to 75% by weight of the functional group-containing styrene polymer part (c6) and 75 to 25% by weight of the polymer part (c7). (C6) component is 5
If it is less than wt%, the effect of the functional group is lowered and the surface layer peeling resistance is lowered. On the other hand, if it exceeds 95% by weight, the effect of the functional group is too large and the fluidity is lowered. If the content of the component (c7) is less than 5% by weight, the fluidity is lowered, and if it exceeds 95% by weight, the surface layer peeling resistance is lowered.

As the method for producing the compatibilizing agent (C-3), a known production method can be used, and the kind and operation thereof are not particularly limited. For example, there are the following two methods.

The first method is a method of polymerizing the macromonomer of the polymer part (c7) and the monomer of the polymer part (c6) to obtain a graft polymer. The polymerization is carried out, for example, in a solvent such as toluene, xylene, benzene or chlorobenzene under a nitrogen atmosphere at 30 to 100 ° C., preferably 40 to 80 ° C., cumene hydroperoxide, di-cumyl peroxide, t-butyl cumyl peroxide. It is carried out using a polymerization initiator such as oxide.

The second method is in the presence of the polymer part (c6) in a solvent such as toluene, xylene or benzene at a high temperature of 150 to 250 ° C., preferably 160 to 230 ° C. In this method, a radical initiator such as cumyl peroxide is used to graft the monomer of the polymer part (c7).

The compatibilizer (C-4) is a block copolymer composed of 5 to 95% by weight of an olefin polymer block (c8) and 95 to 5% by weight of a styrene polymer block (c9). Is.

The olefin polymer block (c8) is, for example, a homopolymer of various olefin monomers, a random copolymer thereof, a block copolymer or a graft copolymer thereof, or a homopolymer or copolymer thereof. Examples include a mixture of coalescence. For example,
High density polyethylene, medium density polyethylene, low density polyethylene, copolymer of ethylene and other α-olefin, polypropylene, copolymer of propylene and other α-olefin, polybutene, poly-4-methylpentene-1 Such as polyolefins or oligomers, ethylene-propylene rubber, ethylene-propylene-diene rubber, ethylene-vinyl acetate copolymer, butyl rubber, butadiene rubber, propylene-butene copolymer,
Examples thereof include polyolefin-based elastomers such as ethylene-acrylic acid ester copolymers, which may be used alone or in combination of two or more kinds. Among these, low-density polyethylene, polypropylene, copolymers of propylene and other α-olefins and oligomers thereof are preferable from the viewpoint of impact resistance and heat resistance, and polypropylene, propylene and other α-olefins are preferable. Particularly preferred are copolymers with and oligomers thereof.

The three-dimensional structure of this olefin polymer is not particularly limited, but from the viewpoint of heat resistance, the isotactic content is preferably 60% by weight or more, more preferably 70% by weight.
That is all. The number average molecular weight of the olefin polymer is preferably 500 to 60,000, more preferably 1,000 to 50,000 from the viewpoint of impact resistance and fluidity. The number average molecular weight is G
It can be measured by PC (gel permeation chromatography).

The block (c9) of the styrene polymer is
It is preferably a block obtained by polymerizing 3 to 40% by weight of a vinyl cyanide compound, 35 to 85% by weight of an aromatic vinyl compound and 50 to 0% by weight of an alkyl (meth) acrylate compound.

When the composition within these ranges is used, the compatibility with the styrene resin is improved.

Examples of vinyl cyanide compounds include acrylonitrile and methacrylonitrile, and examples of aromatic vinyl compounds include styrene, methylstyrene, chlorostyrene, α-methylstyrene and β-isopropenylnaphthalene. Examples of the alkyl (meth) acrylate compound include methyl methacrylate, ethyl methacrylate and butyl acrylate. Any of the above compounds may be used alone or in combination of two or more.

The block (c9) of the styrene polymer is
In addition to the vinyl cyanide compound, the aromatic vinyl compound and the alkyl (meth) acrylate compound, 20% by weight or less of another vinyl compound copolymerizable therewith may be copolymerized. Examples of other copolymerizable vinyl compounds include maleimide, N-substituted maleimide, and (meth) acrylic acid.

Furthermore, the block (c9) of the stinlen-based polymer preferably has a reduced viscosity of 0.2 to 0.9 dl / g (dimethylformamide solution, 30 ° C., concentration 0.3 g / dl),
In the range other than this, the impact resistance of the resin composition of the present invention,
Surface layer peeling resistance tends to decrease.

The compatibilizer (C-4) is composed of 5 to 95% by weight of a block of olefin polymer (c8) and 95 to 5% by weight of a block of styrene polymer (c9). 25 to 75% by weight of the block (c8) and 75 to 25% by weight of the styrene copolymer block (y9). When the content of the component (c8) is less than 5% by weight, the compatibility with the olefin resin decreases, and the content is 95% by weight.
If it exceeds, the compatibility with the styrene-based resin is lowered, and the surface layer peeling resistance is deteriorated. On the other hand, if the content of the component (c9) is less than 5% by weight, the compatibility with the styrene-based resin will decrease, and if it exceeds 95% by weight, the compatibility with the olefin-based resin will decrease and the surface layer peeling resistance will deteriorate.

The method for producing the compatibilizer (C-4) is not particularly limited. For example, the following methods can be given.

There is a method in which the olefin polymer block (c8) is polymerized by living polymerization and then the styrene polymer block (c9) is polymerized.

In addition, a hydroxyl group or a carboxyl group is introduced at the terminal of the olefin polymer by living polymerization, radiation modification, or acid anhydride modification, while β-mercaptopropionic acid or 2-mercaptoethanol is used as a chain transfer agent. For example, in a solvent such as xylene, a hydroxyl group or a carboxyl group is introduced at the terminal of the styrenic polymer, and a non-aqueous solvent such as xylene, decalin or tetralin is used at 100 to 200 ° C. for 2 to 10 ° C.
There is a method of producing by dehydration reaction for a period of time.

The compatibilizing agent (C-5) is a modified olefin polymer obtained by polymerizing a monomer having a functional group (c10), and a monomer having a functional group capable of reacting with the functional group of the monomer having the functional group. Was polymerized, (c11)
It is a compatibilizer composed of a modified styrene polymer, a (c12) modified methacrylate polymer, or a (c13) modified vinyl chloride polymer.

The functional group that can be introduced into (c10) is, for example, an epoxy group, a 1, 2 or tertiary amino group,
Examples thereof include an amide group, a carboxyl group, an acid anhydride group, and a hydroxyl group, and these can be used alone or in combination of two or more.

Examples of the compound capable of introducing a functional group include glycidyl acrylate, glycidyl methacrylate, allyl glycidyl ether, dimethylaminoethyl methacrylate, vinyl pyridine, t-butylaminoethyl methacrylate, acrylamide, methacrylamide, maleimide, acrylic acid and methacrylic acid. , Maleic acid, maleic anhydride, allyl alcohol, 2-hydroxyethyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl methacrylate, 2-
Examples include hydroxypropyl acrylate.

Among them, the reaction with the functional group introduced into the modified styrene polymer (c11), modified methacrylate polymer (c12) or modified vinyl chloride polymer (c13) in the present invention is made more effective. In order to achieve this, a modified olefin polymer (c-5) of the compatibilizer (C-5) is used.
10) is a modified olefin system having one structural unit having at least one amide group and at least one functional group selected from the group consisting of a glycidyloxy group and a glycidyl group per 2-1000 repeating units of olefin. It is preferably a polymer. Such a modified olefin polymer is a compound having a functional group capable of polymerizing with an olefin, for example, a vinyl group, and has one or more amide groups, and one or more glycidyloxy groups and / or glycidyl groups. A compound having a group or a compound having one or more amide groups and one or more glycidyloxy groups and / or glycidyl groups and other functional groups can also be produced by copolymerization with an olefin. it can. In addition, after producing a polyolefin by a usual polymerization method, a compound having a functional group capable of polymerizing with the above-mentioned olefin in the polyolefin chain, for example, a vinyl group, and one or more amide groups, and one or more A compound having both a glycidyloxy group and / or a glycidyl group, or a compound having at least one amide group and one or more glycidyloxy group and / or a glycidyl group, and other functional groups as well. You may introduce | transduce by graft-polymerizing by the method of. When copolymerized or graft-polymerized with an olefin, the compound represented by the general formula (I):

[0064]

[Chemical 2]

It is also possible to copolymerize a polymerizable vinyl monomer other than the compound represented by or the compound having a functional group.

Further, the modified styrene polymer (c11) or the modified methacrylate polymer (c1) according to the present invention is used.
2) or in order to make the reaction with the functional group introduced into the modified vinyl chloride polymer (c13) more effective, a carboxyl group or an acid anhydride is introduced as the functional group introduced into the modified olefin polymer (c10). Groups are also preferred, with anhydride groups being especially preferred.

The functional group is a modified styrene polymer (c1
1) or a modified methacrylate-based polymer (c12) or a modified vinyl chloride-based polymer (c13) may be reacted to produce a compatibilizer, preferably a functionalized olefin-based polymer (c10) Containing 0.05 to 50% by weight of the monomer portion containing a group, more preferably 0.
Contains 1 to 30% by weight. If it is less than 0.05% by weight, the peeling resistance to the surface layer is not improved, and if it exceeds 50% by weight, the decrease in fluidity tends to be large.

An example of such a modified olefin polymer is shown below.

As the modified olefin polymer, for example, the following general formula (I):

[0070]

[Chemical 3]

(In the formula, Ar represents an aromatic hydrocarbon group having 9 to 23 carbon atoms and having at least one functional group selected from the group consisting of a glycidyloxy group and a glycidyl group,
R represents a hydrogen atom or a methyl group) and an olefin polymer modified with a compound represented by

More specifically, the modified olefin polymer used in the present invention is obtained by copolymerization of the compound represented by the general formula (I) and the olefin polymer, and the obtained modified olefin polymer is obtained. As per 2 to 1000 repeating units of olefin, the following general formula (II):

[0073]

[Chemical 4]

(In the formula, Ar represents an aromatic hydrocarbon group having 9 to 23 carbon atoms and having at least one functional group selected from the group consisting of a glycidyloxy group and a glycidyl group,
R represents a hydrogen atom or a methyl group) and a modified olefin polymer having one structural unit having a glycidyloxy group and / or a glycidyl group.

The compound represented by the general formula (I) can be produced by the method described in JP-A-60-130580.

That is, the following general formula (III):

[0077]

[Chemical 5]

(Wherein Ar 'represents an aromatic hydrocarbon group having at least one hydroxyl group and having 9 to 23 carbon atoms and R represents a hydrogen atom or a methyl group) and epihalohydrin were added. After that, it can be produced by carrying out a dehydrohalogenation reaction with an alkali.

For example, when 2,6-xylenol N-methylolacrylamide is used as a starting material, the following structural formula (IV):

[0080]

[Chemical 6]

A compound represented by can be obtained.

The general formula (I) for the above olefin-based polymer
The modified olefin-based polymer produced by radical addition of the compound represented by or copolymerization of the olefin monomer and the compound of the general formula (I) may be a graft copolymer or a block copolymer. Even if it is a combination, it is preferable to have one structural unit having a glycidyloxy group and / or a glycidyl group represented by the general formula (II) per 2 to 1000 repeating units of olefin.

The proportion of the general formula (II) that is randomly or graft-copolymerized is 10 olefin repeating units.
When the number of structural units is 1 or less per 00, the modification of the olefin polymer is insufficient, and the effect of improving the surface layer peeling resistance when mixed with the styrene resin and the olefin resin is not sufficiently exhibited.

The method for producing the copolymer of the olefin polymer and the compound of formula (I) or the compound capable of introducing a selected functional group is not particularly limited, but the following two methods are preferable. Available for

The first production method is a graft modification method of an olefin polymer, and the second production method is a compound having an olefin monomer and a glycidyl group represented by the above general formula (I), or selected. It is a method of copolymerizing a compound capable of introducing a functional group.

The first production method is an olefin polymer and a compound having a glycidyl group represented by the above general formula (I),
Alternatively, a composition composed of two components capable of introducing a selected functional group is prepared by using a radical initiator such as α, α ′-(t-butylperoxy-m-isopropyl) benzene or t-butylperoxybenzoate. To add radicals.

At this time, a solvent that dissolves or swells the olefin polymer, for example, tetralin, decalin, toluene, xylene or chlorobenzene may be used.

Specifically, the olefin polymer and the compound of the general formula (I), or the compound capable of introducing a selected functional group, are used in conventional methods such as an extruder, a heating roll, a Brabender, and a Banbury mixer. There is a method of melt-kneading using various known blenders.

The second production method is a compound having an olefin monomer and a glycidyl group represented by the above general formula (I),
Alternatively, it is a method of copolymerizing a compound capable of introducing a selected functional group.

The copolymerization method is not particularly limited, but a general radical polymerization method, a cationic polymerization method, an anionic polymerization method, or a coordination polymerization method using a transition metal can be used.

The modified olefin polymer produced by radical addition of a compound capable of introducing a functional group to the olefin polymer or copolymerization of an olefin monomer with a compound capable of introducing a functional group is a graft copolymer or block. It may be a copolymer or the like.

Examples of the olefin polymer as a raw material of the modified olefin polymer used in the present invention include homopolymers of various olefin monomers, random copolymers thereof, block copolymers or graft copolymers thereof,
Alternatively, a mixture of these homopolymers or copolymers can be used. For example, high-density polyethylene, medium-density polyethylene, low-density polyethylene, copolymers of ethylene and other α-olefins, polypropylene, copolymers of propylene and other α-olefins, polybutene, poly-4-methylpentene. -1, such as polyolefins or oligomers, ethylene-propylene rubber,
Examples thereof include polyolefin elastomers such as ethylene-propylene-diene rubber, ethylene-vinyl acetate copolymer, butyl rubber, butadiene rubber, propylene-butene copolymer, ethylene-acrylic acid ester copolymer, and these alone or in combination. Used in the above combination. Among these, low-density polyethylene, polypropylene, copolymers of propylene and other α-olefins and oligomers thereof are preferable from the viewpoint of impact resistance and heat resistance, and polypropylene, propylene and other α-olefins are preferable. Particularly preferred are copolymers with and oligomers thereof.

The three-dimensional structure of this olefin polymer is not particularly limited, but from the viewpoint of heat resistance, the isotactic content is preferably 60% by weight or more, more preferably 70% by weight.
That is all. The number average molecular weight of the olefin polymer is preferably 500 to 60,000, more preferably 1,000 to 50,000 from the viewpoint of impact resistance and fluidity. The number average molecular weight is G
It can be measured by PC (gel permeation chromatography).

The modified styrene polymer (c11) or modified methacrylate polymer (c12) obtained by polymerizing a compound having a functional group reactive with the functional group selected from the modified olefin polymer (c10) is A polymer obtained by polymerizing a vinyl compound having a functional group with an aromatic vinyl compound, a vinyl cyanide compound, an alkyl (meth) acrylate compound and / or another vinyl compound copolymerizable therewith. It may be a random copolymer, a block copolymer or a graft copolymer, or a mixture of these copolymers.

The copolymerization method is not particularly limited, but a general radical polymerization method, a cationic polymerization method, an anionic polymerization method, or a coordination polymerization method using a transition metal can be used.

The modified styrene polymer (c11) is a polymer containing an aromatic vinyl compound as the main component (50% by weight or more), and the modified methacrylate polymer (c12) is an alkyl (meth) acrylate compound. Main component (50% by weight
And above).

As the functional group, for example, an epoxy group,
Examples include primary, secondary or tertiary amino group, dimethylamino group, amide group, carboxyl group, acid anhydride group, hydroxyl group and the like, and these are used alone or in combination of two or more kinds. For example, modified olefin polymer (c10)
In order to make the reaction with the glycidyl group introduced in the above more effective, an amino group, a carboxyl group and a hydroxyl group are preferable, and a carboxyl group is particularly preferable. Also,
When a carboxyl group and / or an acid anhydride group is introduced into the modified olefin polymer (c10),
It is preferably an epoxy group, an amino group, a dimethylamino group and / or a hydroxyl group.

Examples of the compound capable of introducing a functional group include glycidyl acrylate, glycidyl methacrylate, allyl glycidyl ether, dimethylaminoethyl methacrylate, vinyl pyridine, t-butylaminoethyl methacrylate, acrylamide, methacrylamide, maleimide, acrylic acid and methacrylic acid. , Maleic acid, maleic anhydride, allyl alcohol, 2-hydroxyethyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl methacrylate, 2-
Examples include hydroxypropyl acrylate.

Examples of the vinyl cyanide compound include acrylonitrile and methacrylonitrile, and examples of the aromatic vinyl compound include styrene, methylstyrene, chlorostyrene, α-methylstyrene, and alkyl (meth) ) Examples of the acrylate compound include methyl methacrylate, ethyl methacrylate, butyl acrylate and the like. The above compounds are used alone or in combination of two or more.

The functional group is a modified olefin polymer (c1
It is sufficient that a compatibilizer can be produced by a reaction with 0),
Preferably, the modified styrene-based polymer (c11) or the modified methacrylate-based polymer (c12) contains 0.05 to 50% by weight of a monomer as a constituent component containing a functional group, and more preferably 0.1 to 30% by weight. contains. If it is less than 0.05% by weight, the peeling resistance to the surface layer is not improved, and if it exceeds 50% by weight, the decrease in fluidity tends to be large.

Further, the modified styrene polymer (c11)
And the modified methacrylate polymer (c12) have a reduced viscosity of 0.2 to 0.9 dl / g (dimethylformamide solution,
30 ° C. and a concentration of 0.3 g / dl) are preferable, and in this range, the impact resistance and the surface layer peeling resistance of the resin composition of the present invention are improved.

The modified vinyl chloride polymer (c13) obtained by polymerizing a compound having a functional group reactive with the functional group selected from the modified olefin polymer (c10) is a vinyl compound having a functional group and a chloride. A polymer obtained by polymerizing a vinyl compound and / or another vinyl compound copolymerizable therewith, which is a random copolymer, a block copolymer or a graft copolymer of the above vinyl compound, or a copolymer thereof. It can be a mixture of coalesces.

The copolymerization method is not particularly limited, but a general radical polymerization method, a cationic polymerization method, an anionic polymerization method, or a coordination polymerization method using a transition metal can be used.

The modified vinyl chloride polymer (c13) is a polymer containing a vinyl chloride compound as a main component (50% by weight or more).

As the functional group, for example, an epoxy group,
Examples include primary, secondary or tertiary amino group, dimethylamino group, amide group, carboxyl group, acid anhydride group, hydroxyl group and the like, and these are used alone or in combination of two or more kinds. For example, in order to make the reaction with the glycidyl group introduced into the modified olefin polymer (c10) of the present invention more effective, an amino group, a carboxyl group and a hydroxyl group are preferable, and a carboxyl group is particularly preferable. When a carboxyl group and / or an acid anhydride group is introduced into the modified olefin polymer (c10), it is preferably an epoxy group, an amino group, a dimethylamino group and / or a hydroxyl group. .

Examples of the compound capable of introducing a functional group include glycidyl acrylate, glycidyl methacrylate, allyl glycidyl ether, dimethylaminoethyl methacrylate, vinyl pyridine, t-butylaminoethyl methacrylate, acrylamide, methacrylamide, maleimide, acrylic acid and methacrylic acid. , Maleic acid, maleic anhydride, allyl alcohol, 2-hydroxyethyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl methacrylate, 2-
Examples include hydroxypropyl acrylate.

The functional group is a modified olefin polymer (c1
It is sufficient that a compatibilizer can be produced by a reaction with 0),
Preferably, the modified vinyl chloride polymer (c13) contains a functional group-containing monomer as a constituent component in an amount of 0.05 to 50% by weight, and more preferably 0.1 to 30% by weight. If it is less than 0.05% by weight, the surface peeling resistance is not improved
When it exceeds the weight%, the fluidity tends to be greatly reduced.

The modified vinyl chloride polymer (c13) preferably has an average degree of polymerization of 400 to 1500, more preferably 450 to 1500.
1000 is more preferable. When the average degree of polymerization is 400 or more, impact resistance is improved, and when it is 1500 or less, fluidity tends to be improved. The modified vinyl chloride polymer (c13) is a copolymer in which 80% by weight or more of the constituents are modified vinyl chloride,
Included are graft copolymers in which 80% by weight or more of the constituents are modified vinyl chloride and copolymers containing modified vinyl chloride that has been chlorinated later as constituents, either alone or in combination with 2
Used in combination of two or more species. The copolymer may contain 20% or less of a monovinylidene compound such as ethylene, vinyl acetate, methyl methacrylate and butyl acrylate.

The compatibilizer (C-5) is a modified olefin polymer (c1) obtained by polymerizing a monomer having a functional group.
0) Modified styrene polymer (c11) or modified methacrylate polymer (c12) obtained by polymerizing 5 to 95% by weight of a monomer having a functional group reactive with the functional group of the monomer having the functional group, or It is a compatibilizer obtained by reacting 95 to 5% by weight of a modified vinyl chloride polymer (c13). Modified olefin polymer (c10) 15 to 85% by weight, modified styrene polymer (c11) or modified methacrylate polymer (c12) or modified vinyl chloride polymer (c13) is preferably 85 to 15% by weight, and modified Olefin polymer (c10) 25 to 75% by weight, modified styrene polymer (c11) or modified methacrylate polymer (c12) or modified vinyl chloride polymer (c13) 75
-25% by weight is particularly preferred. When the modified olefin polymer (c10) is less than 5% by weight or more than 95% by weight,
The compatibility between the resin compositions of the present invention cannot be improved, and the surface layer peeling resistance is significantly deteriorated.

The method for producing the compatibilizer (C-5) is not particularly limited, but the following two methods can be preferably used.

The first production method is a melt-kneading method of the modified olefin polymer (c10) and the modified styrene polymer (c11) or the modified methacrylate polymer (c12) or the modified vinyl chloride polymer (c13). In the second production method, the modified olefin polymer (c10) is added to the modified styrene polymer (c11), the modified methacrylate polymer (c12) or the modified vinyl chloride polymer (c1).
It is a method of graft polymerizing the vinyl compound group constituting 3).

The first production method is, for example, the glycidyl group in the structural unit represented by the general formula (II) in the modified olefin polymer (c10) and the modified styrene polymer (c11) or the modified methacrylate polymer. Union (c1
2) or the glycidyl group in the modified vinyl chloride polymer (c13) is reacted with a compound having a reactive functional group.

At this time, a solvent that dissolves or swells the olefin polymer, for example, tetralin, decalin, toluene, xylene, chlorobenzene or the like may be used.

Specifically, the modified olefin polymer (c
10) and the modified styrene-based polymer (c11) or modified methacrylate-based polymer (c12) or modified vinyl chloride-based polymer (c13) are conventionally used, for example, in extruders, heating rolls, Brabender, Banbury mixers, etc. There is a method of melt kneading at 150 to 250 ° C., preferably 180 to 230 ° C. using various known blenders.

In the second production method, vinyl which constitutes the modified olefin polymer (c10) with the modified styrene polymer (c11), the modified methacrylate polymer (c12) or the modified vinyl chloride polymer (c13) is used. It is a method of graft-polymerizing a group of compounds. The graft polymer is not particularly limited, but a general impregnation polymerization method, a polymerization method using a macromonomer, a radical polymerization method or the like can also be used.

Styrenic resin (A) used in the present invention
For example, polystyrene, acrylonitrile-
Styrene copolymer, acrylonitrile-styrene-α-
Methylstyrene copolymer, acrylonitrile-methylmethacrylate-styrene-α-methylstyrene copolymer, ABS resin, AS resin, MABS resin, MBS resin, AAS resin, AES resin, acrylonitrile-butadiene-styrene-α-methylstyrene copolymer Polymer, acrylonitrile-methyl methacrylate-butadiene-styrene-α-methylstyrene copolymer, styrene-maleic anhydride copolymer, styrene-maleimide copolymer,
Styrene-N-substituted maleimide copolymer, acrylonitrile-styrene-N-substituted maleimide copolymer, acrylonitrile-butadiene-styrene-β-isopropenylnaphthalene copolymer, acrylonitrile-methyl methacrylate-butadiene-styrene-α-methylstyrene Examples include maleimide copolymers, which may be used alone or in combination of two or more.

When impact resistance is required, the styrene resin (A) is selected from vinyl cyanide compounds, aromatic vinyl compounds and alkyl (meth) acrylate compounds in 40 to 90% by weight of rubber-like polymer. It is preferable to use a styrene-based resin containing 0 to 70% by weight of a graft copolymer obtained by polymerizing 60 to 10% by weight of a mixture of one or more compounds described above and a monomer copolymerizable therewith.

Examples of the rubber-like polymer include polybutadiene rubber, styrene-butadiene rubber (SBR), acrylonitrile-butadiene rubber (NBR) and butyl acrylate rubber. Examples of the vinyl cyanide compound include acrylonitrile and methacrylonitrile, and examples of the aromatic vinyl compound include styrene and
Examples include methyl styrene, chlorostyrene, α-methyl styrene, and examples of the alkyl methacrylate compound include methyl methacrylate and ethyl methacrylate. The above polymers and compounds are used alone or in combination of two or more.

As the styrene resin (A), those having the following composition are particularly preferable. That is, the composition of the methyl ethyl ketone soluble component contains a vinyl cyanide compound and / or an alkyl (meth) acrylate compound as a copolymerization component in an amount of 10 to 60% by weight, preferably 15% by weight or more, and a reduced viscosity of 0.2 to 0.9. dl / g (dimethylformamide solution, 30 ° C., concentration 0.3 g / dl), more preferably 0.25 to 0.8 dl / g. If the vinyl cyanide compound and / or the alkyl methacrylate compound is less than 10% by weight as a copolymerization component, the surface layer peeling resistance tends to be low, and if it exceeds 60% by weight, the fluidity tends to be low.
Further, if the reduced viscosity is less than 0.2 dl / g, the impact resistance will decrease, and if it exceeds 0.9 dl / g, the fluidity will decrease, and the thermal stability during molding tends to deteriorate. Further, when heat resistance is required, it is preferable that the composition of the methyl ethyl ketone soluble component is a styrene resin having an α-methylstyrene content of 30% by weight or more.

Examples of the olefin resin (B) used in the present invention include high density polyethylene, medium density polyethylene, low density polyethylene, copolymers of ethylene and other α-olefins, polypropylene, propylene and other α. -Copolymer with olefin, polybutene, polyolefins or oligomers such as poly-4-methylpentene-1, ethylene-propylene rubber, ethylene-propylene-diene rubber, ethylene-vinyl acetate copolymer, butyl rubber, butadiene rubber, Examples include polyolefin elastomers such as propylene-butene copolymer and ethylene-acrylic acid ester copolymer, and polyolefins and modified polyolefin elastomers. These may be used alone or in combination of two or more. Ira Be done. Among these, low-density polyethylene, polypropylene, and copolymers of propylene and other α-olefins are preferable from the viewpoint of impact resistance and heat resistance, and polypropylene, propylene and other α-olefins are preferable.
-Copolymers with olefins are particularly preferred.

The three-dimensional structure of the olefin resin (B) is not particularly limited, but the isotactic content is preferably 60% by weight or more, more preferably 70% by weight or more from the viewpoint of heat resistance. Also, the molecular weight of the olefin resin (B) is 5,000 to 1,000 in terms of weight average in terms of impact resistance and fluidity.
000 is preferable, and 10,000 to 700,000 is more preferable.

The olefin resin (B) contains, for example, an epoxy group, a primary, secondary or tertiary amino group, an amide group, a carboxyl group, an acid anhydride group, a hydroxyl group and the like alone or in combination with two or more functional groups. A modified olefin resin may also be used.

The resin composition of the present invention comprises 1 to 99 parts by weight of the styrene resin (A) and 99 to 1 parts by weight of the olefin resin (B), and the total amount of the components (A) and (B) is 100 parts by weight. 0.1 to 50 parts by weight of at least two compatibilizing agents selected from the compatibilizing agents (C-1) to (C-5) are blended. The ratio of the component (A) and the component (B) is
The component (A) is preferably 10 to 99 parts by weight, the component (B) is preferably 90 to 1 part by weight, more preferably the component (A) is 10 to 70 parts by weight, and the component (B) is 90 to 30 parts by weight.

In the present invention, the compatibilizer is (C-
The feature is that at least two kinds selected from 1) to (C-5) are used.

When only one of the compatibilizers (C-1) to (C-5) is used, the balance of the surface layer peeling resistance, impact resistance and fluidity is impaired, but two or more kinds are used. When used, all three mentioned above are improved and balanced.

The compatibilizers (C-1) to (C-5) are used in an amount of 0.1 to 50 with respect to 100 parts by weight as the total of the components (A) and (B).
Parts by weight, preferably 1 to 25 parts by weight. If it is less than 0.1 part by weight, the peeling resistance to the surface layer is not improved, and if it exceeds 50 parts by weight, impact resistance and molding processability are impaired.

A combination containing a compatibilizing agent (C-3) is particularly preferable.

For the polymerization of the styrene resin (A) and the olefin resin (B), known polymerization methods can be used, respectively, and the kind and operation thereof are not particularly limited. After completion of the polymerization, the target powder is obtained by a known method.

Further, the resin composition of the present invention is prepared by blending the powders or pellets obtained by the respective methods by a known method, for example, using a Henschel mixer or the like, and using a twin-screw extruder or the like at 150 to 250 ° C. Preferably 180-
Obtain the target product by, for example, melting and kneading at 230 ° C. Further, the resin composition of the present invention is a well-known impact resistance improver, processability improver, antioxidant, heat stabilizer, lubricant, and, if necessary, a UV absorber, a pigment, Antistatic agents, flame retardants, flame retardant auxiliaries and the like can be used in combination. In particular, styrene resins, phenolic antioxidants used for olefin resins, phosphite stabilizers, tin stabilizers and various fatty acid esters, metal soaps, internal and external lubricants such as waxes are the resin composition of the present invention. It can be used as a resin for injection molding so as to have higher performance.

Hereinafter, the present invention will be described in more detail with reference to specific examples, but these examples do not limit the present invention. In the examples, "part" means part by weight and "%" means% by weight.

Examples 1 to 7 and Comparative Examples 1 to 3 Styrenic resins (A-1 to A-3) having the composition shown in Table 1 polymerized by a known emulsion polymerization method, and olefin resins (shown in Table 2 ( B-1, B-2) and the compatibilizer (C-1) shown in Table 3.
To C-5) are blended in a composition ratio shown in Table 4 by using a Henschel mixer, and these components are mixed in a twin-screw extruder to 20
The mixture was melt-kneaded at 0 to 250 ° C. and pelletized to obtain resin composition pellets.

The reduced viscosity was measured by the following method.

(Reduced viscosity) A styrene resin was dissolved in N, N-dimethylformamide to a concentration of 0.3 g / dl to prepare a polymer solution, and a Ubbelohde viscometer ( The transit time (t) was measured using a capillary viscosity automatic measuring device manufactured by Shibayama Chemical Equipment Co., Ltd. On the other hand, for the solvent N, N-dimethylformamide, the passage time at 30 ° C. (t
_o ) was measured, and the reduced viscosity (η _red ) was calculated by the following formula.

Η _red = (t / t ₀ -1) / C where C means the concentration (g / dl) of the polymer solution.

[0135]

[Table 1]

[0136]

[Table 2]

[0137]

[Table 3]

[0138]

[Table 4]

Next, using the pellets prepared by the above method, the nozzle temperature was set to 230 ° C. by a 5 ounce injection molding machine, and test pieces required for the following tests were molded.

Various physical properties of each test piece were measured according to the methods described below. The results are shown in Table 5.

[0141]

[Table 5]

The surface layer releasability of the molded product was evaluated by the releasability from the gate portion of a flat plate molded product having a thickness of 1.5 mm. Evaluation was made by a visual 5-point method, the highest being 5 points and the lowest being 1 point. That is, the evaluation shows that the larger the number, the better the surface layer peeling resistance.

The impact strength was evaluated by the Izod impact test based on the ASTM D-256 standard (23 ° C., kg · unit:
cm / cm ^2).

The fluidity was measured by using the above-mentioned molding machine and the thickness was 3
The evaluation was made by the flow distance in a mosquito coil-shaped mold of mm × width 10 mm (unit: mm).

From the results shown in Table 5, it can be seen that the resin composition of the present invention has excellent surface layer peeling resistance, impact resistance and fluidity.

[0146]

The resin composition of the present invention has a surface layer peeling resistance,
It has excellent impact resistance and fluidity, and is extremely useful as a resin composition for injection molding.

Claims (28)

[Claims] 1. A total of 10 consisting of 1 to 99 parts by weight of (A) styrene resin and 99 to 1 parts by weight of (B) olefin resin.
(C-1): 25 to 70 parts by weight of (c1) one or more kinds of ethylene-propylene-diene rubber, (c2) 25 to 70 parts by weight of one or more kinds of ethylene-vinyl acetate copolymer, relative to 0 parts by weight of resin. (C
3) 0 to 25 parts by weight of at least one rubber-like polymer and / or olefin polymer and (c4) 1 to 50 parts by weight of at least one functional group-containing rubber polymer and / or olefin polymer. Parts, at least one ethylene-propylene-diene rubber (c1), at least one ethylene-vinyl acetate copolymer (c2), at least one rubber-like polymer and / or olefin polymer (c3), and A compatibilizer in which the total amount of the one or more functional group-containing rubber-like polymer and / or the olefin polymer (c4) is 100 parts by weight, (C-2): (c1) one or more ethylene-propylene 25-70 parts by weight of diene rubber, (c2) 25-70 parts by weight of one or more ethylene-vinyl acetate copolymers and (c3) one or more rubbery polymers and / or olefins 0 to 25 parts by weight of polymer, one or more ethylene-propylene-diene rubber (c1), one or more ethylene-vinyl acetate copolymer (c2) and one or more rubbery polymer and / or olefin system Polymer mixture in which the total amount of the polymer (c3) is 100 parts by weight, and (c5) functional group-containing monomer group 0.05 to 50% by weight
And 50 to 99.95% by weight of monomers that can be copolymerized with these
A compatibilizer which is a graft polymer composed of 5 to 200 parts by weight of a monomer group consisting of (C-3): (c6) functional group-containing styrene polymer part 5
To 95% by weight and (c7) a styrene polymer, an alkyl (meth) acrylate polymer and / or a vinyl chloride polymer in a polymer portion of 95 to 5% by weight. Compatibilizer, (C-4): Block 5 of (c8) olefin-based polymer
~ 95% by weight and (c9) styrenic polymer block 95 ~
The amount of the compatibilizing agent which is a block copolymer composed of 5% by weight and (C-5) :( c10) a monomer having a functional group is 0.05.
To 95% by weight of a modified olefin polymer polymerized to contain 50% by weight to 0.05% of a monomer having a functional group reactive with the functional group of the monomer having the functional group.
~ 50% by weight of (c11) modified styrene-based polymer or (c12) modified methacrylate-based polymer or (c13) modified vinyl chloride-based polymer 95-
2 selected from the group consisting of compatibilizing agents consisting of 5% by weight
A resin composition containing 0.1 to 50 parts by weight of one or more compatibilizers. 2. The composition of the styrene resin (A) soluble in methyl ethyl ketone contains 10 to 60% by weight of a vinyl cyanide compound and / or an alkyl (meth) acrylate compound as a copolymerization component, and has a reduced viscosity. 0.2-0.9 dl
/ G (dimethylformamide solution, 30 ° C, concentration 0.3 g /
The resin composition according to claim 1, which is dl). 3. A styrenic resin (A) is a rubber-like polymer
40 to 90% by weight of vinyl cyanide compound, aromatic vinyl compound and one or more compounds selected from alkyl (meth) acrylate compounds and 60 to 10% by weight of a mixture of monomers copolymerizable therewith The graft copolymer formed by polymerization is contained in an amount of 0 to 70% by weight.
The resin composition described. 4. The composition of the methyl ethyl ketone soluble component of the styrene resin (A) has an α-methylstyrene content of
The resin composition according to claim 1, 2 or 3, which is 30% by weight or more. 5. The resin composition according to claim 1, 2, 3 or 4, wherein the olefin resin (B) is a propylene polymer. 6. The resin composition according to claim 1, wherein the weight average molecular weight of the olefin resin (B) is 5,000 to 100,000. 7. One or more functional group-containing rubbery polymers and / or olefinic polymers (c4) are one or more epoxy group-containing rubbery polymers and / or olefinic polymers 1 to 50 parts by weight.
The resin composition according to 4, 5, or 6. 8. A styrene-butadiene rubber, a styrene-butadiene-block copolymer, an acrylonitrile-butadiene rubber, a polybutadiene rubber, an isobutylene rubber, and a butyl rubber, wherein one or more rubber-like polymers and / or olefin polymers (c3) are used. The resin composition according to claim 1, which is at least one selected from the group consisting of: and a polyolefin. 9. A modified styrene-butadiene rubber, a modified styrene-butadiene-block copolymer, wherein one or more functional group-containing rubbery polymers and / or olefinic polymers (c4) each contain a functional group. At least one selected from the group consisting of modified acrylonitrile-butadiene rubber, modified polybutadiene rubber, modified isobutylene rubber, modified butyl rubber and modified polyolefin.
The resin composition according to claim 1, 2, 3, 4, 5, 6 or 8, which is a seed. 10. A modified styrene-butadiene rubber, a modified styrene-butadiene-block copolymer, wherein one or more functional group-containing rubbery polymers and / or olefinic polymers (c4) each contain an epoxy group.
9. At least one selected from the group consisting of modified acrylonitrile-butadiene rubber, modified polybutadiene rubber, modified isobutylene rubber, modified butyl rubber, and modified polyolefin, 1, 2, 3, 4, 5, 6 or 8.
The resin composition described. 11. A modified styrene-butadiene in which one or more functional group-containing rubbery polymers and / or olefin-based polymers (c4) are grafted with a functional group-containing compound and / or a functional group-containing polymer, respectively. At least one selected from the group consisting of rubber, modified styrene-butadiene-block copolymer, modified acrylonitrile-butadiene rubber, modified polybutadiene rubber, modified isobutylene rubber, modified butyl rubber and modified polyolefin.
The resin composition according to claim 1, 2, 3, 4, 5, 6 or 8, which is a seed. 12. A modified styrene-butadiene rubber or a modified styrene-butadiene block in which one or more functional group-containing rubber-like polymers and / or olefin-based polymers (c4) are each grafted with an epoxy group-containing polymer. Copolymer, modified acrylonitrile-butadiene rubber, modified polybutadiene rubber, modified isobutylene rubber,
4. At least one selected from the group consisting of modified butyl rubber and modified polyolefin.
The resin composition according to 4, 5, 6 or 8. 13. One or more rubber-like polymers and / or olefin-based polymers (c3) are polymethylmethacrylate, styrene-acrylonitrile copolymer or styrene-methyl, which have affinity with styrene-based resins, respectively. At least one selected from the group consisting of styrene-butadiene rubber, styrene-butadiene-block copolymer, acrylonitrile-butadiene rubber, polybutadiene rubber, isobutylene rubber, butyl rubber and polyolefin grafted with a methacrylic acid ester copolymer. 2, 3, 4, 5, 6,
The resin composition according to 7, 9, 10, 11 or 12. 14. The monomer group containing a functional group in the compatibilizing agent (C-2) is a monomer group containing one or more epoxy groups, The resin composition according to 5 or 6. 15. The copolymerizable monomer group in the compatibilizer (C-2) is an aromatic vinyl compound, a vinyl cyanide compound, an alkyl (meth) acrylate compound, a halogenated vinyl compound, an olefin compound or the like. 15. The resin composition according to claim 1, which is at least one selected from the group consisting of other vinyl compounds copolymerizable with 16. A functional group-containing styrene polymer part (c
7. The resin composition according to claim 1, wherein 6) is obtained by polymerizing 50% by weight or more of an aromatic vinyl compound. 17. A functional group-containing styrene polymer part (c6).
80% by weight or more of the aromatic vinyl compound polymerized as a monomer in styrene, methylstyrene, α
-The resin composition according to claim 1, which is methylstyrene and / or β-isopropylnaphthalene. 18. The styrene-based polymer of the polymer part (c7) comprises 15 to 40% by weight of a vinyl cyanide compound, 50 to 85% by weight of an aromatic vinyl compound, and 0 to another vinyl compound copolymerizable therewith. The resin composition according to claim 1, 2, 3, 4, 5, 6 or 17, which is obtained by copolymerizing 20% by weight. 19. Alkyl (meth) of the polymer part (c7)
The acrylate-based polymer contains 60% by weight or more of methyl methacrylate as a constituent component.
The resin composition according to 4, 5, or 6. 20. The oxygen content of the epoxy group in the compatibilizer (C-3) is 0.03 to 5% by weight.
The resin composition according to 2, 3, 4, 5 or 6. 21. An olefin-based polymer block (c)
8) has a number average molecular weight of 1,000 to 50,000.
The resin composition according to 2, 3, 4, 5 or 6. 22. Styrenic polymer block (c9)
Is 3 to 40% by weight of a vinyl cyanide compound, 35 to 85% by weight of an aromatic vinyl compound, and 50 to 0% by weight of an alkyl (meth) acrylate compound as constituent components. The resin composition according to 5, 6, or 21. 23. Styrenic polymer block (c9)
Has a reduced viscosity of 0.2 to 0.9 dl / g (dimethylformamide solution, 30 ° C., concentration of 0.3 g / dl).
The resin composition according to 3, 4, 5, 6 or 22. 24. Modified olefin polymer (c10)
Is a modified olefin polymer having one structural unit having at least one amide group and at least one functional group selected from the group consisting of a glycidyloxy group and a glycidyl group per 2-1000 repeating units of olefin. The resin composition according to Claim 1, 2, 3, 4, 5 or 6. 25. Modified olefin polymer (c10)
Is represented by the general formula (I): (In the formula, Ar represents an aromatic hydrocarbon group having 9 to 23 carbon atoms and having at least one functional group selected from the group consisting of a glycidyloxy group and a glycidyl group, and R represents a hydrogen atom or a methyl group). 7. The resin composition according to claim 1, which is an olefin polymer modified with the compound represented. 26. The modified styrene-based polymer (c11), modified methacrylate-based polymer (c12) or modified vinyl chloride-based polymer (c13) is modified with a compound having a carboxyl group. 3, 4, 5,
The resin composition according to 6, 24 or 25. 27. The functional group contained in the modified olefin polymer (c10) is a carboxyl group and / or
The resin composition according to claim 1, which is an acid anhydride group. 28. The functional group contained in the modified styrene polymer (c11), modified methacrylate polymer (c12) or modified vinyl chloride polymer (c13) is an epoxy group, an amino group, a dimethylamino group or The resin composition according to claim 1, which is (or) a hydroxyl group.