JP4931384B2 - Thermoplastic resin composition, production method thereof and use thereof - Google Patents

Description

  The present invention relates to a thermoplastic resin composition comprising a monovalent metal ionomer, a glycidyl monomer and an ethylene or α-olefin copolymer, and a polyolefin, a process for producing the same, and a use thereof. More specifically, the ionomer is a monovalent metal ionomer of an ethylene / (meth) acrylic acid copolymer, and has excellent optical properties, heat resistance, bending rigidity, chemical resistance, etc., its production method and Regarding its use.

  An ionomer resin in which the carboxyl group of an ethylene / (meth) acrylic acid copolymer having an unsaturated carboxylic acid content of 2 to 30% by weight is neutralized with a metal ion, Performance superior in abrasion resistance and transparency as compared with the base copolymer. It has been already known, for example, in Japanese Patent Application Laid-Open No. Sho 60-127149, to make use of its performance to improve the surface scratch resistance of building materials and automotive interior / exterior parts. According to the publication, it is described that an automobile exterior material excellent in surface gloss and scratch resistance can be obtained. In addition, for flooring materials for building materials, use of non-PVC flooring with ionomer resin as a surface layer in order to prevent material wear and scratches due to movement of desks and chairs, friction during walking, etc. It is known in the publication of -254004.

  However, the molded product with the ionomer resin as the surface layer requires a countermeasure against excessive glossiness due to the good transparency and surface smoothness that are the characteristics of the ionomer resin. Measures such as making are taken. However, a disadvantage of this method is that it becomes difficult to apply to handrails and pipe-shaped three-dimensional molded products made by profile extrusion. Furthermore, even when a matte sheet is created using an embossing roll, the matte pattern disappears when it is placed in a foaming furnace in a process that is secondarily heated, such as molding a foamed sheet. It had the problem that it ended up. For this reason, it is possible to keep the matte appearance by sticking the matte film after leaving the foaming furnace, or to re-apply the matte appearance through the embossing roll, but the ionomer resin itself has a high metal adhesion. However, due to the nature, problems such as frequent fusing to hot rolls have been pointed out.

  Unlike the above-described method, as a method for expressing a matte appearance in the resin itself, a method of blending polymers having poor compatibility or adding a different viscosity component such as a rubber component is disclosed in JP-A-61-37836. And JP-A-4-86260. As a method similar to this, an ionomer composition modified with a styrene / unsaturated carboxylic acid copolymer is known in Japanese Patent Application Laid-Open No. 11-140251, and has an effect of imparting a matte appearance and improving heat resistance. Etc. have been confirmed. However, since this method uses the poor compatibility, it has a problem that the characteristics of the ionomer are impaired, for example, whitening at the time of folding as a sheet is strongly expressed and wear resistance is lowered.

Therefore, the present applicant has proposed a thermoplastic resin composition having heat resistance and matting without causing whitening by bending while utilizing the excellent wear resistance, scratch resistance, and the like possessed by ionomers (Japanese Patent Application Laid-Open No. 2004-124). -131512).
The present inventors diligently developed a composition having excellent physical properties such as heat resistance, bending rigidity, and chemical resistance while maintaining appropriate optical properties while taking advantage of the superior properties of ionomers. As a result, the present invention has been reached.

JP-A-60-127149 JP-A-8-254004 JP 61-37836 A JP-A-4-86260 JP-A-11-140251 JP 2004-131512 A

The present invention is a thermoplastic resin composition that retains appropriate optical properties (gross) while taking advantage of the superior properties of ionomers, and has other physical properties such as heat resistance, bending rigidity, and chemical resistance, and A manufacturing method thereof is provided.
The present invention provides uses such as molded articles and multilayer materials that can be suitably used with thermoplastic resin compositions that retain appropriate optical properties and have other physical properties such as heat resistance, bending rigidity, and chemical resistance. To do.

The present invention provides an ionomer (A) 60-96.7 containing no metal ions other than sodium, wherein the carboxyl group of the ethylene / (meth) acrylic acid copolymer is neutralized by 20 to 90% with a monovalent metal ion. parts, ethylene or α- olefins 50-99% by weight and glycidyl (meth) acrylate and glycidyl unsaturated and 0.5 to 20 wt% glycidyl monomer selected from the ether, vinyl to be al ester and unsaturated carboxylic acid ester Copolymer (B) of 0.3 to 10 parts by weight of the selected monomer (0 to 49.5% by weight), a density of 880 to 920 kg / m ³ , a melt flow rate at 230 ° C. and a load of 2160 g of 0.2. to 80 g / 10 min, propylene and random copolymers of ethylene propylene content of 90 to 99.5 wt% (C) Providing a thermoplastic resin composition consisting of 30 parts by weight.

The present invention also provides a method for producing the thermoplastic resin composition as described above, comprising melting and mixing (B) and (C) in advance and (A).

A molded body made of the thermoplastic resin composition described above is a preferred embodiment of the present invention.

Also, it embodiments a molded body is a skin material of the multilayer material are preferred embodiments of the present invention.

  A multilayer material obtained by laminating the skin material on a single-layer or multilayer substrate is a preferred embodiment of the present invention, and a multilayer material in which at least a part of the substrate is a foamed layer is also a preferred embodiment of the present invention. .

According to the present invention, there is provided a thermoplastic resin composition that retains appropriate optical properties and has heat resistance, flexural elasticity, and chemical resistance while utilizing the excellent wear resistance, scratch resistance, etc. possessed by the ionomer. The
The present invention also provides a method for producing a thermoplastic resin composition having excellent properties as described above.
Further, according to the present invention, there are provided uses such as a molded article, a skin material, and a laminated material in which the thermoplastic resin composition having excellent properties as described above can be suitably used.

  The present invention relates to an ionomer (A) 60 to 96.7 parts by weight obtained by neutralizing a carboxyl group of an ethylene / (meth) acrylic acid copolymer with a monovalent metal ion by 20 to 90%, ethylene or α-olefin, A thermoplastic resin composition comprising 0.3 to 10 parts by weight of a copolymer (B) with a glycidyl monomer and 3 to 30 parts by weight of a polyolefin (C) is provided. Moreover, this invention provides the manufacturing method of the thermoplastic resin composition which melt-mixes said (B), (C), and (A).

The ionomer (A) used in the present invention is one in which the carboxyl group of the ethylene / (meth) acrylic acid copolymer is neutralized with a monovalent metal ion of 20 to 90 mol%, preferably 30 to 85 mol%. is there.
The ethylene / (meth) acrylic acid copolymer used as the base polymer of the ionomer (A) of the present invention is a copolymer having a (meth) acrylic acid content of 2 to 30% by weight, preferably 3 to 25% by weight. The ethylene / (meth) acrylic acid copolymer of the present invention may be a multi-component copolymer obtained by copolymerizing other monomers in addition to ethylene and acrylic acid or methacrylic acid.

Other monomers that may be copolymerized include vinyl acetate, vinyl esters such as vinyl propionate, methyl acrylate, ethyl acrylate, isopropyl acrylate, isobutyl acrylate, nbutyl acrylate, acrylic acid Examples include isooctyl, 2-ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate, isobutyl methacrylate, dimethyl maleate, diethyl maleate, unsaturated carboxylic acid esters, carbon monoxide, sulfur dioxide, and the like.
These other monomers are preferably used within a range that does not impair the desired physical properties of the thermoplastic resin composition of the present invention, and are usually 0 to 40% by weight, preferably 0 to 30% by weight, and more preferably 0. It is preferable to use in the range of about ˜20% by weight.

  It is desirable to use an ethylene / (meth) acrylic acid copolymer having a melt flow rate at 190 ° C. and a load of 2160 g of 1 to 1000 g / 10 minutes, particularly about 2 to 800 g / 10 minutes. Such a copolymer can be obtained by radical copolymerization under high temperature and high pressure.

As the ionomer (A), 20 to 90 mol%, preferably 30 to 85 mol% of the carboxyl group of the copolymer is neutralized with a monovalent metal ion. Examples of monovalent metal ions include alkali metals such as lithium, sodium and potassium. By using a monovalent metal, a composition excellent in heat resistance, bending rigidity, chemical resistance and the like can be easily obtained.
The monovalent metal ionomer (A) of the present invention may contain other metal ions such as a divalent metal ion, but the metal ion preferably occupies a main proportion.

  In view of moldability, mechanical properties, miscibility with other components, etc., the ionomer has a melt flow rate of 0.01 to 100 g / 10 min at 190 ° C. under a load of 2160 g, particularly 0.1 to 50 g / 10. It is preferred to use the one in minutes.

  In the copolymer (B) of ethylene or α-olefin and a glycidyl monomer of the present invention, examples of the α-olefin include α-olefins having about 3 to 8 carbon atoms such as propylene and 1-butene. Of ethylene and α-olefin, ethylene is particularly preferable.

The glycidyl monomer in the copolymer (B) of ethylene or α-olefin and glycidyl monomer of the present invention is glycidyl (meth) acrylate or glycidyl unsaturated ether.
Examples of glycidyl (meth) acrylate or glycidyl unsaturated ether include glycidyl acrylate, glycidyl methacrylate, vinyl glycidyl ether, allyl glycidyl ether, and 2-methylallyl glycidyl ether.

  The copolymer (B) of ethylene or α-olefin and glycidyl monomer of the present invention may be a binary copolymer of ethylene or α-olefin and the glycidyl monomer, and further, other monomers, For example, a multi-component copolymer obtained by copolymerizing vinyl ester or unsaturated carboxylic acid ester may be used. Specific examples of these other monomers include other monomers exemplified in the ethylene / (meth) acrylic acid copolymer which is the base polymer of the ionomer (A). As other monomers, vinyl esters and unsaturated carboxylic acid esters are preferable. The copolymer (B) of ethylene or α-olefin and glycidyl monomer of the present invention is preferably a copolymer of ethylene or α-olefin and glycidyl (meth) acrylate or glycidyl unsaturated ether, or vinyl. A multi-component copolymer (B) containing an ester or an unsaturated carboxylic acid ester can be used.

  In the copolymer (B) of ethylene or α-olefin and glycidyl monomer, ethylene or α-olefin is 50 to 99 wt%, particularly 52 to 98 wt%, glycidyl monomer is 0.5 to 20 wt%, particularly 1 to 18% by weight and those in which the other monomer is copolymerized in the range of 0 to 49.5% by weight, preferably 0 to 40% by weight are preferable.

  Such a copolymer may be a random copolymer or a graft copolymer, but it is generally preferable to use a random copolymer in view of the uniformity of the reaction with the ionomer. Such a random copolymer can be obtained, for example, by radical copolymerization under high temperature and high pressure.

  When an ethylene copolymer is used as the copolymer, a melt flow rate at 190 ° C. and a load of 2160 g is 0.01 to 1000 g / 10 minutes, particularly 0.1 to 200 g / 10 minutes. Is preferred.

  In the present invention, polyolefin (C) is used together with ionomer (A), ethylene or α-olefin / glycidyl monomer copolymer (B). By using such a polyolefin, a resin composition excellent in dispersibility with other components and excellent in design, heat resistance, abrasion resistance, scratch resistance, antifouling property, mechanical strength, etc. can be easily obtained. Can get to.

  The polyolefin (C) used in the present invention is an α-olefin having about 1 to 12 carbon atoms such as ethylene, propylene, 1-butene, 1-hexene, 1-octene, 1-decene, 4-methyl-1-pentene. Homopolymers, intercopolymers, etc., which are produced by various methods using various catalysts can be used. Further, it is preferable to use one having a melting point of 200 ° C. or lower, particularly 180 ° C. or lower.

Preferable examples of the polyolefin (C) of the present invention include an ethylene homopolymer or an ethylene / α-olefin copolymer mainly composed of ethylene. These are collectively called polyethylene. As polyethylene, what was manufactured using the metallocene catalyst is preferable. Among them, an ethylene / α-olefin copolymer mainly composed of ethylene having a density of 870 to 930 kg / m ³ , preferably 880 to 920 kg / m ³ , a melt flow rate at 190 ° C. and a load of 2160 g of 0.1 -100 g / 10 min, preferably 0.2-80 g / 10 min. The α-olefin in the ethylene / α-olefin copolymer is preferably one having 4 to 12 carbon atoms, particularly about 5 to 10 carbon atoms.

The ethylene / α-olefin copolymer preferably has a weight average molecular weight / number average molecular weight (MWD) of 2.5 or less, particularly 2.0 or less. It is preferable to use a composition having a composition distribution width index (CDBI) of 50% or more, particularly 70% or more. Such a copolymer is disclosed, for example, in JP-T-6-509528. Other preferable ethylene / α-olefin copolymers include those having a melt flow ratio (I ₁₀ / I ₂ ) of 5.63 or more, particularly 7 to 20. Examples of such copolymers are disclosed in WO95 / 00857.

Another preferred example of the polyolefin (C) of the present invention is a propylene / α-olefin copolymer. The propylene / α-olefin copolymer is a copolymer of propylene mainly composed of propylene and other α-olefin, and has a density of 870 to 930 kg / m ³ , particularly 880 to 920 kg / m ³ . Further, those having a melt flow rate at 230 ° C. and a load of 2160 g of 0.1 to 100 g / 10 min, particularly 0.2 to 80 g / 10 min are preferable.

  As the α-olefin copolymerized with propylene in the propylene / α-olefin copolymer, those having 2 to 12 carbon atoms, particularly those having 2 to 10 carbon atoms are preferable. Specifically, ethylene, 1-butene, One or more of 1-hexene, 1-octene, 1-decene, 1-dodecene, 4-methyl-1-pentene and the like can be exemplified.

  The propylene / α-olefin copolymer may be a random copolymer or a block copolymer. A particularly suitable random copolymer is a random copolymer of propylene and ethylene having a propylene content of 85 to 99.9% by weight, preferably 90 to 99.5% by weight, or propylene, ethylene and other α-olefins. It is a random copolymer consisting of. These are preferably crystalline polymers copolymerized in the presence of a stereospecific catalyst.

  The block copolymer that can be used as a propylene / α-olefin copolymer is obtained by sequentially polymerizing or copolymerizing propylene and another α-olefin, and is generally (1) after polymerization of propylene. It is carried out by combining one or more polymerization steps consisting of (2) copolymerization of propylene and a slightly larger amount of α-olefin and / or (3) polymerization of α-olefin. In the polymerization of propylene of (1) above, a small amount of α-olefin may be copolymerized, and in the polymerization of (3) α-olefin, a small amount of propylene may be copolymerized. In any case, the block polymer can be obtained by the multistage polymerization in the presence of a stereospecific catalyst. A suitable propylene / α-olefin block copolymer is a block copolymer of propylene and ethylene containing about 60 to 95% by weight of the propylene polymer block (1).

  The blending ratio of each component (A), (B), (C) in the thermoplastic resin composition of the present invention is such that the ionomer (A) is 60 to 96.7 weights when the total amount is 100 parts by weight. Parts, copolymer (B) 0.3-10 parts by weight, polyolefin (C) 3-30 parts by weight, preferably (A) 73-95.5 parts by weight, (B) 0.5- 7 parts by weight, (C) 4-20 parts by weight, more preferably (A) 81-94 parts by weight, (B) 1-4 parts by weight, and (C) 5-15 parts by weight. is there.

  The thermoplastic resin composition of the present invention can be obtained by melt-mixing ionomer (A), ethylene or α-olefin / glycidyl monomer copolymer (B) and polyolefin (C). In melt mixing, a normal mixing device such as a screw extruder, a roll mixer, a Banbury mixer, or the like can be used. Melt mixing can be carried out by blending the above three components at the same time, but the most preferable method is to melt and mix (B) and (C) in advance and (A). According to this method, since (B) is diluted to (C) and the reaction with (A) does not occur locally and becomes uniform, a composition having excellent properties can be obtained with good quality stability. There is an advantage that it can be manufactured. If (A) and (B) are first melt-mixed and then (C) is mixed, gelation may occur due to a local reaction.

  Other polymers and various additives can be blended with the resin composition of the present invention within a range not impairing the object of the present invention. Examples of such polymers include other polyolefins. Such other polymers can be blended in a proportion of, for example, 10 parts by weight or less with respect to 100 parts by weight of the total of (A), (B), and (C). Examples of the additives include antioxidants, heat stabilizers, light stabilizers, ultraviolet absorbers, pigments, dyes, lubricants, antiblocking agents, antistatic agents, antifungal agents, antibacterial agents, flame retardants, and flame retardants. Auxiliaries, crosslinking agents, crosslinking aids, foaming agents, foaming aids, inorganic fillers, fiber reinforcements and the like can be mentioned.

  The resin composition of the present invention can be formed into molded bodies having various shapes by various molding methods such as extrusion molding, injection molding, compression molding, and hollow molding. For example, a molded body such as a sheet or film formed using an inflation film molding machine or a cast film sheet molding machine is obtained in a silky shape, and has excellent wear resistance and scratch resistance, and is resin when stretched or bent. While maintaining the characteristics of the ionomer that there is no whitening, it retains moderate optical properties (gross) and has excellent heat resistance, bending rigidity, chemical resistance, and the like. Such a molded body such as a sheet or film may be a single layer, and an adhesive resin and a co-extruded laminate can be formed by a co-extrusion molding machine in order to improve the adhesion to various substrates.

  The adhesive resin that can be laminated with the resin composition of the present invention includes an ethylene / unsaturated carboxylic acid copolymer, an ethylene / unsaturated carboxylic acid / unsaturated carboxylic acid alkyl terpolymer, and an ethylene / unsaturated carboxylic acid alkyl terpolymer. Blends consisting of a single substance or an arbitrary plurality selected from ester copolymers, ethylene / vinyl ester copolymers, ethylene / unsaturated carboxylic acid alkyl esters / carbon monoxide copolymers, or unsaturated carboxylic acid grafts thereof. A thing can be mentioned as a representative example.

  (A) a single-layer sheet of the resin composition according to the present invention, (b) a multilayer sheet having the above-mentioned adhesive resin as an inner layer, or (c) an ionomer, an ionomer and a polyhydric alcohol. The multilayer sheet having the composition, or a composition comprising any ethylene polymer and the like, as an intermediate layer in (b) is a heat lamination molding, a hot roll molding, a hot press molding, a dry lamination (adhesive coating), etc. A laminate can be formed by laminating on the surface of another substrate by the known molding method. Examples of such base materials include paper or printing paper, various metal foils, various metal plates such as steel plates, woody materials such as wood or plywood, polyolefin films / sheets / molded products such as polyethylene, polypropylene, TPO, or the like. And various filler blends, PVC sheets / tiles, woven fabrics and non-woven fabrics.

  Another example of extrusion molding of the resin composition of the present invention is a method of forming a laminate by thermally bonding to another substrate surface using an extrusion coating molding machine. Examples of such a substrate include various metal plates such as paper, various metal foils and steel plates, polyolefin film sheets, woven fabrics and non-woven fabrics. In the case of extrusion coating molding, as shown in the examples described later, by controlling the MFR and blending ratio of each resin component constituting the resin composition of the present invention, extrusion moldability and appropriate optical properties (gross) ), Surface characteristics such as heat resistance, bending rigidity, chemical resistance, etc. can be balanced.

  When laminating the resin composition of the present invention on the surface of another substrate by an extrusion coating molding machine, it may be a single layer, or in order to improve the adhesion to various substrates, it is adhesive by a coextrusion coating molding machine. It can be formed via a resin layer. As such an adhesive resin, a single substance or a blend of any plural kinds selected from the aforementioned various ethylene copolymers or an unsaturated carboxylic acid graft product thereof can be given as a representative example.

  EXAMPLES Hereinafter, although an Example demonstrates this invention, this invention is not limited to these Examples. In addition, the composition and physical properties of the raw materials used in Examples and Comparative Examples, and methods for measuring the physical properties of the obtained sheets and films are as follows.

1. Ingredients (1) Ionomer (A)
Ionomer 1:
Base polymer: ethylene / methacrylic acid copolymer (methacrylic acid content 15% by weight)
Metal cation source: Sodium, degree of neutralization: 54 mol%, MFR: 0.9 g / 10 min. Ionomer 2:
Base polymer: ethylene / methacrylic acid copolymer (methacrylic acid content 15% by weight)
Metal cation source: Zinc, degree of neutralization: 59 mol%, MFR: 0.9 g / 10 min (2) α-olefin / glycidyl monomer copolymer (B)
GMA copolymer:
Ethylene / glycidyl methacrylate copolymer (glycidyl methacrylate content: 12% by weight), MFR: 3.0 g / 10 min (3) Propylene / α-olefin copolymer (C)
Random PP (propylene / ethylene random copolymer (manufactured by Prime Polymer, F-219DA, density 910 kg / m ³ , MFR 8.5 g / 10 min (230 ° C.))

2. Physical property measurement method The film physical property is measured using a 100 μm-thick inflation film manufactured by the method described later, and the kettle heat resistance is measured using a 200 μm-thick T-die sheet manufactured by the method described later. went. For the surface hardness and bending rigidity test, a press sheet having a thickness of 3 mm was prepared under the conditions of heating at 180 ° C. for 5 minutes, pressurizing at 180 ° C. for 5 minutes, and cooling at 20 ° C. for 5 minutes.

(1) Appearance (gel generation)
The gel generated in the above-described inflation film was observed.
No gel generation: ○
Gels that occur frequently: ×

(2) Optical gloss: Conforms to JIS Z8741

(3) Glossiness return (designability)
After being left in a gear oven heated to 180 ° C. for 1 minute, the gloss value of the film taken out from the gear oven and allowed to cool was measured and compared with the value before heating.
The gross value after heating is larger than the value before heating: ×
Things that have not changed: ○

(4) Sliding property Based on ASTM D1890, the ratio of the load when the film test piece is attached to a 63.5 mm square holder and pulled on the same film test piece attached to the base at 150 mm / min and the load of the holder. The sliding friction coefficient was measured.

(5) Tensile properties Based on JIS K6781, the elongation at break and the presence or absence of whitening were measured under the following conditions.
Test speed: 500 mm / min, distance between chucks: 90 mm, marked line distance: 40 mm

(6) Heat seal property Based on JIS Z1707, the state of the seal interface when a 15 mm wide film was peeled was observed. In addition, the sample used for the measurement was pressed for 1 second with a 10 mm wide seal bar heated to 140 ° C., and used after 24 hours from heat sealing.

(7) Yakan heat resistance After using a 200 μm thick sheet prepared by the method described later, a stainless steel kettle containing 2.2 liters of hot water heated and boiled in a gas range or the like was directly placed on the sheet and left for 1 minute. The fusing property to the sheet was evaluated.
What the kettle is fused to the sheet: ×
Items that peel easily from the sheet (low sheet shrinkage): ○
Items that peel easily from the sheet (no sheet shrinkage): ◎

(8) Surface hardness A 2 mm-thickness sheet prepared by a method described later in accordance with JIS K7215 was used.

(9) Flexural rigidity A 2 mm thick sheet prepared by a method described later in accordance with JIS K7106 was used.

(Examples 1-3)
After melt-kneading the blend obtained by previously melt-mixing the GMA copolymer and random PP and the ionomer 1 at the ratio shown in Table 1, it is molded using an inflation film molding machine at a processing temperature of 210 ° C. A film having a thickness of 100 μm was obtained, and its physical properties were measured. Similarly, a 40 mm diameter single screw extruder equipped with a 400 mm wide T die was extruded under the condition of a T die temperature of 200 ° C. to obtain a 200 μm thick sheet, and the heat resistance of the kettle was measured. In addition, a press sheet having a thickness of 3 mm was prepared by a separately described method and used for a hardness test and a bending rigidity test. The results are shown in Table 1.

Antifouling Test Using the 200 μm thick sheet obtained in Example 2, this antifouling property was evaluated for the pollutants listed in Table 2 according to JIS A5705 and A1454 test methods. The results are shown in Table 2.

(Comparative Example 1)
In the same manner as in Example 1 except that the use of the GMA copolymer and random PP was omitted and the total amount of ionomer 1 was obtained, 100 μm-thick films, 200 μm and 3 mm-thick sheets were prepared, and the film physical properties, kettle heat resistance, Evaluation of hardness test and bending stiffness test was performed. The results are also shown in Table 1.

(Comparative Example 2)
100 μm-thick films, 200 μm and 3 mm-thick sheets were prepared in the same manner except that ionomer 2 was used instead of ionomer 1 of Comparative Example 1, and evaluation of film physical properties, kettle heat resistance, hardness test, and bending stiffness test was performed. Went. The results are also shown in Table 1.
In addition, Table 2 shows the results of an antifouling test conducted by the same method as in Example 2 using the obtained 200 μm thick sheet.

(Comparative Example 3)
For a 200 μm thick polyvinyl chloride (PVC) sheet having a polymerization degree of 1050 containing 20 parts of a plasticizer DOP (160 ° C. roll molding), in the same manner as the antifouling test of Example 2,
The antifouling property was evaluated, and the results are shown in Table 2.

The thermoplastic resin composition provided by the present invention makes use of the excellent wear resistance, scratch resistance, etc. possessed by the ionomer, while maintaining appropriate optical properties, and has heat resistance, flexural elasticity, and chemical resistance. It is a thermoplastic resin composition.
The present invention provides a method for producing a thermoplastic resin composition having excellent properties as described above.
Since the thermoplastic resin composition provided by the present invention is a thermoplastic resin composition having excellent properties as described above, it can be suitably used for applications such as molded articles, skin materials, and laminated materials. .

Claims (6)

Ionomer (A) 60 to 96.7 parts by weight of ethylene / (meth) acrylic acid copolymer containing no metal ions other than sodium, 20 to 90% neutralized with sodium ions, ethylene or α -50 to 99% by weight of olefin, 0.5 to 20% by weight of glycidyl monomer selected from glycidyl (meth) acrylate and glycidyl unsaturated ether, and monomer 0 to 49 selected from vinyl ester and unsaturated carboxylic acid ester Copolymer (B) with 0.5 wt% and propylene having a density of 880 to 920 kg / m ³ , 230 ° C. and a melt flow rate of 0.2 to 80 g / 10 min at 2160 g load. Random copolymer (C) of propylene and ethylene having a content of 90-99.5% by weight 3-30 The thermoplastic resin composition comprising a quantity unit. The method for producing a thermoplastic resin composition according to claim 1, comprising melt-mixing (B) and (C) in advance and (A).   The molded object which consists of a thermoplastic resin composition of Claim 1.   The molded product according to claim 3, which is a multilayer material.   A multilayer material obtained by laminating the skin material according to claim 4 on a single-layer or multilayer substrate. The multilayer material according to claim 5 , wherein at least a part of the substrate is a foamed layer.