JPH0397754A - Thermoplastic resin composition - Google Patents

Abstract

PURPOSE:To obtain a composition suitable for interior automative trim and exterior automative trim, etc., having excellent mechanical strength, coating performance, low water absorption and dimensional stability by blending a mixture of polyamide resin and olefin-based resin with a specific amount of polymer having specific multi-phase structure. CONSTITUTION:100 pts.wt. total amounts of (A) 10-90wt.%, preferably 30-70wt.% polyamide resin (e.g. nylon 66) and (B) 90-10wt.%, preferably 70-30wt.% polyolefin-based resin is blended with 1-600 pts.wt., preferably 5-300 pts.wt. total amounts of (C) a polymer having multi-phase structure prepared by grafting a vinyl-based (co)polymer onto a copolymer consisting essentially of an olefin unit and an unsaturated compound unit containing a functional group selected from carboxyl group, etc., and (D) a polymer selected from an ethylene-alpha.olefin-based copolymer, a block copolymer comprising an aromatic vinyl compound and a conjugated diene compound. The weight ratio C/D of the component C and the component D is (1-90)/(99-10), preferably (10-45)/(90-55).

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a thermoplastic resin composite having excellent mechanical strength, low water absorption, and paintability.

b. Conventional technology Polyamide resins represented by nylon 6, nylon 66, nylon 46, etc. have excellent mechanical properties, thermal properties,
Because it has electrical properties, it is widely used in electrical and electronic fields, automobile-related fields, etc.

However, these polyamide resins have a drawback of low notched Izod impact strength, which may cause problems in large molded products or parts used at low temperatures. In addition, due to its high water absorption rate, polyamide resin that has absorbed water will not only cause air bubbles and whitening when it is subjected to molding processing, but also a significant decrease in mechanical strength due to water absorption, as well as dimensional changes and deformation. The problem also arises. Since polyamide resin has such drawbacks, its use as an engineering resin is limited, and there is a problem in that the excellent properties of the polyamide resin itself cannot be utilized.

On the other hand, olefin resins such as polyethylene and polypropylene are inexpensive and exhibit almost no water absorption.
Although it has good water absorption resistance, it has the drawbacks of poor paintability and physical properties at high temperatures. Therefore, attempts have been made to use polyamide resins and olefin resins in combination in order to complement and improve their respective drawbacks. However, simply melt-kneading polyamide resin and olefin resin results in poor compatibility and peeling between them.
Impact resistance is also not sufficient. We attempted to blend ethylene-propylene copolymer rubber to improve impact resistance, but the effect of improving impact resistance was not sufficient.
The appearance of the molded product was poor, and the peeling phenomenon was significant, so it could not be used as an industrial material.

C. Problems to be Solved by the Invention The present inventors aimed to improve the compatibility of polyamide resin and olefin resin in a mixture of polyamide resin and olefin resin, and to improve the impact resistance and paintability of this mixture. As a result of intensive studies, we found that when blending a specific rubbery polymer with polyamide resin and olefin resin, a vinyl (co)polymer undergoes a graft reaction with an ethylene-functional group-containing monomer copolymer. The present inventors have discovered that a thermoplastic resin composition having unprecedented performance can be obtained by blending the multiphase structure obtained above, and have arrived at the present invention based on this knowledge.

d. The means for solving the problem, that is, the present invention, consists of (a) 10 to 90% by weight of polyamide resin, (b) 90 to 10% by weight of polyolefin resin, based on a total of 100 parts by weight of components (a) and (b). c) olefin unit, carboxyl group, acid anhydride group,
A polyvinyl (co)polymer made of at least one vinyl compound is grafted onto a copolymer mainly composed of an unsaturated compound unit having at least one functional group selected from oxazoline groups and epoxy groups. A polymer having a phase structure and (d) an ethylene-α/olefin copolymer, a block copolymer consisting of an aromatic vinyl compound and a conjugated diene compound, a block copolymer consisting of an aromatic vinyl compound and a conjugated diene compound, or random copolymer hydride,
and at least one kind of polymer selected from hydrides of conjugated diene polymers, in which the total amount of (c) and (d) is 1 to 1.
600 parts by weight, and (c)/
The present invention provides a thermoplastic resin composition characterized in that the weight ratio of component (d) is 1 to 90/9 to 9 to 10.

The present invention will be explained in detail below.

The polyamide resin used in (a) rfi, min of the present invention usually has the following formula H2N (cH2)X-NH2 (wherein, X is 4
is an integer between ~12. ) and a linear diamine represented by the following formula HO2 C (cH2)Y-CO2
Those produced by condensation with a linear carboxylic acid represented by H (in the formula, y is an integer between 2 and 12), those produced by ring-opening polymerization of lactam, etc. can be used. Preferred examples of these polyamides include nylon 66, nylon 6, nylon 6101, nylon 612, nylon 6, nylon 12, and nylon 1.
1. Nylon 46, etc.

Also, nylon 6/66, nylon 6/6 1 0, nylon 6/12, nylon 6/6 1 2, nylon 6
Copolyamides such as nylon 6/66/610 and nylon 6/66/12 can also be used.

Furthermore, nylon 6/6T (T: terephthalic acid component),
Examples include semi-aromatic polyamides obtained from aromatic dicarboxylic acids such as terephthalic acid and isophthalic acid and metaxylene diamine or alicyclic diamine, and polyamides obtained from metaxylene diamine and the above linear carboxylic acids. . Note that the polyamide may be used alone, or two or more types of polyamides may be used in combination. Particularly preferred are nylon 66, nylon 6, and nylon 46.

Relative viscosity y7 of the polyamide resin used in the present invention. ，
(measured at 97% sulfuric acid concentration 1 g/100 ml, 30°C) is 1 to 5, preferably 1.5 to 4.5, more preferably 2 to 4.

The olefin resin of component (b) is preferably a polypropylene resin and/or a polyethylene resin. Polypropylene resins include propylene homopolymers, copolymers of propylene with ethylene and α-olefins, and α-olefins other than propylene.
- Mixtures with olefin homopolymers or copolymers, and the like.

The α-olefin used here has a carbon number of 6 to
12 are used, 1-hexene, 1-octene,
1-decene, 3-methyl-1-bentene, 4-methyl-
1-bentene and the like are particularly preferred. α in the above copolymer
- The abundance ratio of the olefin is preferably 0.5% by weight or less.

Further, as the polyethylene resin, any of high density, medium density, or low density polyethylene resins can be used, and polyethylene resins modified with other monomers, halogen compounds, etc. can also be used. Particularly preferred (b)
6 minutes is polypropylene resin.

The usage amount of component (a) and component (b) is (a) component/(b)
) component = 10-9 0/9 0-10% by weight, preferably 20-90/80-10% by weight, more preferably 20-80/80-20, particularly preferably 30-7
0/7 0 to 30% by weight.

If the amount of component (a) used is less than 10% by weight (in the area where the amount of component (b) used exceeds 90% by weight), paintability will be poor;
In the region where the amount of component (a) used exceeds 90% by weight (the region where the amount of component (b) used is less than 10% by weight), the effect of improving water absorption is small.

The polymer (c) having a multiphase structure of the present invention is used as a compatibilizer for components (a), (b) and (d). The component (e) is mainly composed of an olefin unit in a multiphase structure and an unsaturated compound unit having at least one functional group selected from a carboxyl group, an acid anhydride group, an oxazoline group, and an epoxy group. For example, a copolymer formed by high-pressure radical polymerization with olefin and l
It is a binary, ternary or multi-component copolymer with unsaturated compound monomers or other unsaturated monomers, and the olefin in the above copolymer is preferably ethylene or brobylene, especially Preferred is ethylene. Particularly preferred among the -1-2 copolymers is a binary copolymer of ethylene-maleic anhydride.

The amount of olefin in the above copolymer is 60 to 99.5% by weight.
, 0.5 to 40% by weight of a functional group-containing unsaturated compound monomer,
A copolymer containing 0 to 39.5% by weight of other unsaturated monomers is preferred.

Examples of unsaturated compounds containing a carboxyl group include acrylic acid, methacrylic acid, and maleic acid; examples of unsaturated compounds containing an acid anhydride group include maleic anhydride and itaconic anhydride; Examples include vinyl oxazoline, and epoxy group-containing unsaturated compounds include glycidyl methacrylate and allyl glycidyl ether.

Preferred functional groups are epoxy groups and acid anhydride groups, with acid anhydride groups being particularly preferred.

Specifically, the vinyl-based (co)polymer in the multiphase thermoplastic resin used in the present invention includes styrene, methylstyrene, dimethylstyrene, ethylstyrene, isoprobylstyrene, chlorstyrene, and α-methylstyrene. , aromatic vinyl monomers such as α-ethylstyrene, methyl, ethyl, probyl, isopropyl (meth)acrylate,
Esters such as butyl, 2-ethylhexyl, cyclohexyl, dodecyl, octadecyl, vinyl ethers such as vinyl methyl ether, vinyl ethyl ether,
Examples include vinyl cyanide compounds such as acrylonitrile and methacrylonitrile, and acrylamide compounds, and these may be used alone or in combination of two or more.

The multiphase structure thermoplastic resin as used in the present invention refers to a specific functional group-containing olefin copolymer or a vinyl-based (co)polymer matrix containing a vinyl (co)polymer or a specific functional It refers to a group-containing olefin copolymer that is uniformly dispersed in a spherical shape.

The particle size of the dispersed polymer is 0.001 to 10 μm,
Preferably it is 0.01 to 5 μm. When the dispersed resin particle size is less than 0.001 μm or more than 10 μm, the mechanical strength of the resulting composition is undesirably reduced.

The number average degree of polymerization of the vinyl (co)polymer in the multiphase structured thermoplastic resin of the present invention is 5 to 10,000, preferably 10 to 10,000.
The range is 5,000.

The multiphase thermoplastic resin of the present invention contains 5 to 95% by weight, preferably 2% by weight, of the specific functional group-containing olefin copolymer.
The content is preferably in the range of 0 to 90% by weight in order to achieve the object of the present invention.

The grafting method for producing component (c) of the present invention is as follows:
Any generally well-known method such as chain transfer method or ionizing radiation irradiation method may be used, but the most preferred method is the method described in JP-A-64-48856.

In component (c) of the present invention, the amount of vinyl (co)polymer grafted to the functional group-containing olefin copolymer, that is, the grafting ratio, is preferably at least 1% by weight or more.

As the graft component, preferably a (meth)acrylic acid alkyl ester polymer, an aromatic vinyl polymer, and a copolymer consisting of an aromatic vinyl compound and a vinyl cyan compound, and more preferably a (meth)acrylic acid alkyl ester polymer. and styrene-acrylonitrile copolymer.

The ethylene-α/olefin copolymer which is the component (d) of the present invention includes ethylene-α/olefin copolymer, ethylene-α/olefin-polyene copolymer, etc. -Olefins are unsaturated hydrocarbon compounds having 3 to 20 carbon atoms, such as propylene, butene-1, pentene-1, hexene-1, hebutene-1, 4-methylbutene-1, 4-methylbentene-1 Among them, propylene is particularly preferred. The weight ratio of ethylene to α-olefin is 95:5 to 5:95, preferably 95:5 to 20:8.
It is 0. In addition, preferred Mooney viscosity (ML,
100°C) is 1+4 5 to 200, preferably 5 to 100 from the viewpoint of impact resistance.

A block copolymer consisting of an aromatic vinyl compound and a conjugated diene compound has the general formula (A-B←, (A-B←A, n
n (A-B} It is what is expressed.

Here, the polymer block mainly composed of an aromatic vinyl compound refers to a conjugated diene compound block containing a conjugated diene compound alone or a conjugated diene compound containing a conjugated diene compound in an amount of 60% by weight or more, preferably 80% by weight or more, and an aromatic vinyl compound. Any structure having one or more so-called tapered blocks, which are copolymer blocks with a vinyl compound and in which vinyl aromatic compounds are randomly bonded or gradually increased, may be used.

Furthermore, polymer blocks mainly composed of conjugated diene compounds include those having blocks in which conjugated diene compounds are bonded in a low cis type and blocks in a high cis type.

As the vinyl aromatic compound used here, the ones mentioned above are used, but the preferred one is styrene. It is.

Conjugated diene compounds include 1,3-butadiene, 2-
Medyl-1,3-butadiene, 2,3-dimedyl-1.
3-butadiene, 2-neopendyl-1,3-butadiene, 2-chloro-1,3-butadiene, 2-cyano 1
．． 3-butadiene, ``converted straight chain'' (functional bentadienes, straight chain and side chain conjugated hexadiene, etc.) Among these, 1,3-butadiene and 2-methyl-1,3-butadiene are most frequently used. , ],3-butadiene is particularly preferred.

The weight average molecular weight of the entire block co-adhesive composite is preferably 10,000 to 500,000, more preferably 20,000 to 300,000.

You can use not only one combination of Brosoku co-markets, but also combinations of different structures and different vinyl aromatic compound content. Further, as a block copolymer, a hydrogenated product of the above block copolymer can also be used.

Furthermore, hydrogenated products of random polymers of vinyl aromatic vinyl compounds and conjugated diene compounds are also preferably used.

In the component (d) of the present invention, for example, a polybutadigon block segment (c) preferably having a 1,2-vinyl structure of 20% or less A hydrogenated product of a polybutadiene in which the 1,2-vinyl structure of the bonded butadiene moiety is 30 to 95%, or a block copolymer having a block segment ([)) consisting of an aromatic vinyl-butadiene covalent association,
General formula (c-D-}-, (c-11-C, n
n (c-D} X n (wherein, X is a coupling agent residue, and n is an integer of 1 or more).

The hydrogenation rate of the hydride in component (d) of the present invention is preferably at least 80% of the olefinic unsaturated bonds in the conjugated diene compound polymer, more preferably 90% or more, particularly preferably 95% or more. % or more.

Preferable component (d) is ethylene-propylene copolymer a and the above-mentioned hydride, more preferably ethylene-propylene copolymer, polystyrene block, styrene and butadiene laminate L'<. 'Ij
'Aqueous aggregates of copolymers consisting of 9-blocks, hydrides of polymers consisting of polystyrene blocks, high vinyl polybutadiene blocks and low vinyl polybutadiene blocks, polymers consisting of low vinyl polybutadiene blocks and high vinyl polybutadiene blocks. These include hydrides.

Component (d) of the present invention has a L1 target of <4 L, which improves impact resistance, and is a specific polymer selected from rubbery polymers. There are many types of rubber-like polymers, but those other than the component (d) of the present invention either do not improve impact resistance at all or have a small improvement effect.

The usage amount of CC) + (d) component accounting of the present invention is (a)
+ (b) Component 1 to 6 for a total of 100 car ffl parts
00 parts by weight, IJf or 5 to 500 parts by weight, more preferably 5 to 400 parts by weight, particularly preferably 5 to 400 parts by weight.
If the amount used is less than 1 part by weight, the impact resistance will be poor, and if it exceeds 600 parts by weight, the heat resistance, impact resistance and paintability will be poor.

The ratio of component (e) and component (d) to be used is, from the viewpoint of impact resistance and paintability, the ratio of component (c) to component (d) is 1 to 9, preferably 0/9 to 9 to 1. 2 is 5~80/9
5-20, more preferably 10-50/90-
50% by weight, particularly preferably 10-45/90-55
Weight%.

Furthermore, in combination with the compatibilizer component (c), a graft polymer consisting of a propylene polymer or an ethylene polymer and a vinyl-based silicon polymer obtained from at least one vinyl monolayer can also be used. .

As the vinyl monomer used here, the above-mentioned aromatic vinyl monomer, vinyl cyanide compound, (meth)acrylic acid alkyl ester, etc. are used.

In obtaining the plastic adhesive composition of the present invention, component (c) and/or component (d) can be crosslinked by a known crosslinking method.

As the crosslinking used here, peroxide crosslinking, resin crosslinking, sulfur crosslinking, etc. used in ordinary rubber are used.

For specific crosslinking agents, for example, the crosslinking agents described in "Crosslinking Agent Handbook (written by Shinzo Yamashita and Tosuke Kaneko, Taiseisha)",
A crosslinking aid, a crosslinking accelerator, etc. are used.

The crosslinking method includes a static crosslinking method in which components (a), (b), (c), and (d) are melt-mixed, the crosslinking agent is added, and the crosslinking is further kneaded, followed by crosslinking using a hot press or the like. and a dynamic crosslinking method in which crosslinking is performed by adding a crosslinking agent and continuing the melt-mixing state, but the dynamic crosslinking method is preferable because of its excellent performance.

In the dynamic crosslinking method, the crosslinking agents are (a), (b), (c)
, (may be added simultaneously with all components of (L), or any component or portion of the components may be mixed with the crosslinking agent,
The remaining components may be added later, or the entire amount or part of each component may be melt-mixed, the remaining components may be added, and then a crosslinking agent may be added to perform crosslinking.

As a structure suitable for crosslinking by adding the above-mentioned crosslinking agent, a preferable structure is (a) + (b) + (c) + (
The amount of components (a) + (b) in component d) is 50% by weight or less, more preferably 45% by weight or less.

The thermoplastic resin composition of the present invention can be obtained by kneading the above-mentioned components using various extruders, Hanbury mixers, kneaders, rolls, etc. The order of addition of each component during melt-kneading is not particularly limited, but methods include a method of mixing and kneading all the components, a method of kneading arbitrary components, and then adding and kneading the remaining components.

When using the thermoplastic resin composite of the present invention, various fillers can be added.

For example, glass fiber, carbon fiber, metal fiber, glass beads, asbestos, glass flakes, wollastonite,
Fillers such as calcium carbonate, talc, barium sulfate, miyuki, potassium titanate whisker fluororesin, molybdenum disulfide, carbon black, and titanium oxide can be used alone or in combination.

Among these fillers, those in the form of fibers such as glass fibers and carbon fibers preferably have a fiber diameter of 6 to 60 μm and a fiber length of 30 μm or more.

These fillers can be used in an amount of 5 to 150 parts by weight per 100 parts by weight of the composition of the present invention.

Additionally, known additives such as flame retardants, antioxidants, foaming agents, lubricants, plasticizers, pigments, and dyes can be added.

Preferred flame retardants are red phosphorus and halogen-based flame retardants, and more preferred are decabromodiphenyl ether, brominated polystyrene, brominated polyphenylene ether, and a combination of brominated epoxy oligomer and antimony dioxide. A preferred lubricant is a montanic acid wax.

Furthermore, depending on the required performance, other polymers such as A
BS resin, AES resin, MBS. Resin, AS resin, HI
PS, polystyrene, thermoplastic polyester, polycarbonate, polysulfone, polyether sulfone, polyimide, pps, polyether ether ketone, vinylidene fluoride polymer, polyphenylene ether, crosslinked particles, etc. can be blended as appropriate.

The thermoplastic resin composition of the present invention can be used as various molded products by injection molding, sheet extrusion, vacuum molding, irregular molding, foam molding, stampable molding, and the like.

The various molded products obtained by the above molding method can be used for exterior and interior parts of automobiles, various electrical and electronic related parts, housings, etc. by utilizing their excellent performance.

e. EXAMPLES The present invention will be explained in more detail with reference to Examples, but these are merely illustrative and do not limit the scope of the present invention.

In each of the following examples, parts and % indicate parts by weight and % by weight, respectively.

(a) of the present invention used in Examples and Comparative Examples of the present invention,
(b), (c), did.

1, (a) Part A-1 (nylon 6) (d) The component is shown below, and η is obtained by ring-opening polycondensation of ε-cabrolactam. ,2.7
7 (Using 97% sulfuric acid, concentration 1g/10'Oml
, 30°C/l11 constant) nylon 6 was used.

A-2 (nylon 66) η obtained by polycondensation of hexamethylene diamine and adipic acid
Nylon 66 of 2.95 (measurement conditions are the same as A-1 and rel) was used.

A-3 (nylon, 46) η obtained by polycondensation of tetramethylenediamine and adipic acid
Nylon 46 with a rel of 3.55 (measurement conditions are the same as A-1) was used.

2. (b) Component B-1; Polypropylene MH8B-2 manufactured by Mitsubishi Yuka ■
; manufactured by Mitsubishi Yuka ■, polypropylene MA3B-3; manufactured by Nippon Petrochemical ■, polyethylene Stafrene E791 3. (c) Component C-1 Add 250 parts of distilled water and 0.25 parts of polyvinyl alcohol to a stainless steel autoclave, and add and disperse 70 parts of ethylene-glycidyl methacrylate copolymer (glycidyl methacrylate content 15%) while stirring. Ta.

Penzoyl peroxide 0.0% as a radical initiator.
15 parts, t- as a radical (co)polymerizable q-organic peroxide
0.6 part of butylberoxymethacryloxyethyl carbonate was dissolved in 21 parts of styrene and 9 parts of acrylonitrile and added.

By raising the temperature to 60-65°C and carrying out the polymerization reaction for 2 hours, the radical polymerization initiator and radical (co-)
A vinyl monomer containing a polymerizable organic peroxide was impregnated.

Next, the temperature was raised to 80 to 85°C, and a polymerization reaction was carried out for 7 hours.

A grafted precursor was obtained by washing with water and drying.

This grafting precursor was extruded using an extruder (200°C) to carry out a grafting reaction, thereby obtaining a multi-m structure thermoplastic resin C-1. The dispersed particle size of C-1 as observed with a scanning electron microscope is 0.3 to 0.4 μm,
The grafting ratio of the styrene polymer to the ethylene-glycidyl methacrylate copolymer was 32%.

C-2 to C-4 Under the production conditions of C-1, the functional group-containing olefin if
f. 02 to C-4 were produced by combining or by changing the type of vinyl monomer.

In addition, the dispersed particle size and grafting rate of the dispersed phase of C-2 to C-4 were almost the same as those of C-1.

Margin 4 below, (d) Component polymer D-l Ethylene-propylene copolymer rubber (manufactured by Japan Synthetic Rubber ■,
EP912P) Polymer D-2 (c-D-C block copolymer) The 1,2-vinyl content of the block C portion is 10%, the molecular weight is 60,000, and the 1.2-vinyl content of the block D portion is 60%. , polybutadiene hydride with a molecular weight of 120,000 (hydrogenation rate 98
%) was used.

Polymer D-3 (A-B-C block copolymer) Block A is a styrene block with a molecular weight of 40,000 (styrene content 30%), and block B is polybutadiene with a molecular weight of 8.
Block C is polybutadiene with a molecular weight of 10,000 and 1,2-vinyl content of 12%.
A hydrogenated block copolymer (hydrogenation rate of 98%) was used.

Polymer D-4 (A-B block copolymer) Block A
is a block of styrene, and block B is a random copolymer of styrene and butadiene, which is a hydrogenated block copolymer with a molecular ffi of 200,000 (hydrogenation rate: 98%). Note that the amount of styrene in block A is 10%, and the amount of styrene in block B is 20%.

The components (a), (b), (c), and (d) were mixed in the composition ratios shown in Table 1, kneaded using a twin-screw extruder, and pelletized.

After sufficiently drying the obtained pellet, a test piece for evaluation was obtained using an injection molding machine.

Impact resistance (Izod impact strength): Measured at 23°C with a thickness of 1/8' notched according to ASTM D256.

Heat resistance (heat distortion temperature): thickness 1/4', load 4. Measured at 6 kg/cJ.

Mechanical strength (bending strength): Measured according to ASTM D790.

Paintability: Urethane coating with a film thickness of 25 μm was performed using the following paint, curing agent, and thinner manufactured by Origin Denki ■. A grid pattern (100 pieces) was placed on the coating film, and the number of grid patterns that could be peeled off with cellophane tape was measured.

Paint: Origin Plate ZNY Hardening agent: Polyhard H Thinner: Origin Thinner #210 Water absorption rate = 1/8
``A UL Bar test piece was prepared and the test piece was heated to 23°C.
, RHIOO% was left in an atmosphere for 200 hours, and the weight was calculated using the following formula from the weight when absolutely dry after molding and when water was absorbed.

(often outside the range), and paintability is poor.

Comparative Example 3 is an example in which component (c) was not used, and the impact resistance and paintability were poor.

In Comparative Example 4, the amounts of component (c) and component (d) used were small and outside the scope of the present invention, and the impact resistance and paintability were poor.

In Comparative Example 5, component (c) does not have a graft, and the impact resistance and paintability are poor.

Comparative Example 6 is an example in which the component (d) of the present invention was not used, and the impact resistance was poor.

In Examples 1 to 14, thermoplastic resin compositions having the desired effects of the present invention were obtained.

In Comparative Example 1, the amount of component (a) used is large outside the scope of the present invention (the amount of component (b) used is small outside the scope of the present invention), and the water absorption rate is high and the water absorption resistance is low. Inferior.

In Comparative Example 2, the amount of component (a) used is small outside the range of the present invention (the amount of component (b) used is below the present invention margin f. Effect of the invention The thermoplastic resin composition of the present invention has It has excellent mechanical strength such as impact resistance, paintability, low water absorption, and dimensional stability, and is used in automobile interior parts and parts that require high quality.
It also provides molded products such as various electric/electronic parts and housings, so the value of industrial L is great.

Claims (1)

[Claims] (1) (a) 10-90% by weight of polyamide resin (b) 90-10% by weight of polyolefin resin (c) Olefin units, carboxyl groups, acid anhydride group,
A polyvinyl (co)polymer made of at least one vinyl compound is grafted onto a copolymer mainly composed of an unsaturated compound unit having at least one functional group selected from oxazoline groups and epoxy groups. A polymer having a phase structure and (d) an ethylene-α/olefin copolymer, a block copolymer consisting of an aromatic vinyl compound and a conjugated diene compound, a block copolymer consisting of an aromatic vinyl compound and a conjugated diene compound, or (c) and (
A thermoplastic resin characterized in that the total amount of d) is 1 to 600 parts by weight, and the weight ratio of components (c)/(d) is 1 to 90/99 to 10. Composition.