JP2011068739A - Propylene resin composition and molded product thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a propylene resin composition excellent in moldability (flowability), scratch resistance, physical property balance and molded appearance, and a molded product thereof. <P>SOLUTION: The propylene resin composition comprises (A) 20-99 wt.% specific propylene-ethylene random copolymer, (B) 1-80 wt.% fibrous filler, (C) 0.01-5 pts.wt. fatty acid amide (based on total weight of components (A) and (B)) and (D) 0.01-5 pts.wt. fatty acid metal salt (based on total weight of components (A) and (B)). The molded product thereof etc. are also provided. The resin composition may further comprise (E) 1-40 wt.% thermoplastic elastomer based on the total weight of the composition (excluding components (C) and (D)) and/or (F) 20-79 wt.% propylene/ethylene block copolymer having four particular performances based on the total weight of the composition (excluding components (C) and (D)). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a propylene-based resin composition and a molded body thereof, and more specifically, has a propylene-based resin, a fibrous filler, a fatty acid amide, and a fatty acid metal salt as main components, and has excellent moldability (fluidity) and scratch resistance. The present invention relates to a propylene-based resin composition having a physical property balance and a molded appearance, and a molded body formed by molding the same.

Conventionally, the range of use of propylene-based resin compositions is expanding as a material having excellent physical properties and moldability. In particular, in the field of automotive parts such as bumpers, instrument panels, and pillars, parts such as vacuum cleaners, and televisions, propylene / ethylene block copolymers alone, or propylene resins that are reinforced with propylene and talc and rubber. Since the composition is excellent in physical property balance such as rigidity, moldability, recyclability and economic efficiency, these are widely used including the molded body.
On the other hand, in these fields, the moldability, appearance, and physical properties of the propylene-based resin composition are being addressed in order to cope with the further enhancement of functionality, size, thickness, diversification, and complexity of products. Various improvements in balance have been made.
For example, in order to improve the molding appearance and the balance of physical properties, the present inventors have previously obtained a metallic appearance with good color development and excellent weld, and as a polypropylene-based resin material excellent in rigidity and impact resistance, 100 parts by weight of the propylene-based resin component (A) composed of 50 to 90% by weight of the propylene / α-olefin random copolymer (a1) and 10 to 50% by weight of the propylene / α-olefin block copolymer (a2) On the other hand, it is a propylene-based copolymer composition containing 0.01 to 10 parts by weight of brightening agent (B) such as aluminum flakes, and the propylene-based resin component (A) is a mirror surface molded product having a plate thickness of 2 mm. Propylene copolymer composition characterized in that the light transmittance at a light projection angle of 0 ° and a light reception angle of 0 ° is 4% or more (Patent Document) Reference.).

More recently, propylene-based resin compositions that have been reinforced with propylene-based resins and fillers such as talc and rubber in line with improvements in texture, automation of production processes, penetration of non-coating due to higher speeds and solvent regulations, etc. Further improvement of the scratch resistance of the molded body is desired.
For example, the propylene-based copolymer composition proposed by the present inventors has good moldability, weld appearance, and physical property balance, but the propylene-based resin composition is becoming increasingly larger and thinner. In cases where it is necessary to cope with diversification and complexity of shapes, further improvement in the level of scratch resistance is desired.
In order to solve such a problem relating to scratch resistance, various studies have been conducted, and various methods for solving the problem have been proposed. For example, Patent Document 2 proposes a composition having improved scratch resistance by using a high-density polyethylene resin in combination with a polypropylene resin talc composite material. Patent Document 3 proposes a composition comprising a specific polypropylene resin, an elastomer polymerized with a metallocene catalyst, high-density polyethylene, and talc. Patent Document 4 proposes a composition in which a specific ethylene elastomer, talc, and a lubricant are used in combination with a polypropylene resin. Further, Patent Document 5 proposes a composition comprising a specific propylene / ethylene block copolymer, a specific high density polyethylene, talc, a specific hindered amine compound, and a specific fatty acid metal salt.
On the other hand, as a propylene-based resin composition using a filler other than talc alone and a molded product thereof, for example, in Patent Document 6, a specific propylene / ethylene block copolymer, a specific ethylene / propylene copolymer rubber, a specific Polyolefin automotive interior parts that use both talc and whiskers have been proposed.
Patent Document 7 proposes a polypropylene-based resin composition in which propylene / ethylene block copolymer is combined with talc, a specific elastomer, a specific amide compound, and a fibrous inorganic filler, and an injection-molded body comprising the same. .

However, these proposed technologies improve the balance of physical properties such as rigidity and impact strength by finely dispersing a rubber component incompatible with polypropylene into a high-rigidity polypropylene base material. Copolymer is the main component, and although there is a certain improvement with respect to scratch resistance, there is an improvement to prevent scratching due to material destruction starting from fillers such as talc and elastomers. However, the recent needs are still insufficient.
Therefore, in order to satisfy the demands for further thinning, shape diversification, and complexity of molded parts such as automobile parts, there are moldability (fluidity), physical property balance, and aggregates such as fillers. At present, there is a demand for a propylene-based resin composition and a molded body thereof that are more excellent in scratch resistance as well as having a good molded appearance such as not recognized.

JP 2009-138113 A JP 59-108049 A Japanese Patent Laid-Open No. 10-7851 JP 2002-60560 A JP 2003-105163 A JP-A-9-290674 JP 2006-83251 A

Under such circumstances, excellent moldability (fluidity), which is suitable for obtaining various molded products, particularly molded products for automobile parts, is solved by solving the problems of conventional propylene-based resin compositions and molded products thereof. Research and development is required for a propylene-based resin composition having scratch resistance, physical property balance and molded appearance, and a molded article formed by molding the same.
Accordingly, an object of the present invention is to form a propylene-based resin composition having excellent moldability (fluidity), scratch resistance, physical property balance, and molded appearance in view of the above-described problems of the prior art and a molded product thereof. The object is to provide a molded body.

  As a result of intensive studies to solve the above problems, the present inventors have obtained a specific propylene / ethylene random copolymer (A), a fibrous filler (B), a fatty acid amide (C), and a fatty acid metal salt. (D), if necessary, by adding a specific amount of the thermoplastic elastomer (E) or the specific propylene / ethylene block copolymer (F), the moldability (fluidity) of the propylene-based resin composition, Efficiently relieves high stress concentration generated inside the molded product starting from filler components dispersed in propylene resin, etc. while maintaining good physical property balance and molded appearance, for example, locally by rubbing by foreign matter Found that it plays a role in making it difficult to induce breakage even for large deformations that occur, and it has moldability (fluidity), scratch resistance, balance of physical properties, and molding appearance. Excellent, it has been led to completion of the technique for providing a propylene resin composition and molded article obtained by molding it.

That is, according to 1st invention of this invention, the propylene-type resin composition characterized by including the following component (A)-(D) is provided.
Component (A): Propylene-ethylene random copolymer having a melt flow rate (230 ° C., 2.16 kg load) of 0.5 to 200 g / 10 min and an ethylene content of 0.1 to 5% by weight; 20 to 99 weight%
Component (B): Fibrous filler; 1 to 80% by weight
Component (C): Fatty acid amide; 0.01 to 5 parts by weight Component (D): Fatty acid metal salt; 0.01 to 5 parts by weight However, the contents of Component (C) and Component (D) are the respective components It is a value per 100 parts by weight of the total amount of (A) to (B).

  According to a second aspect of the present invention, in the first aspect, the component (A) is a propylene-ethylene random copolymer polymerized using a metallocene catalyst. A composition is provided.

  According to a third aspect of the present invention, there is provided the propylene-based resin composition according to the first or second aspect, wherein the component (B) is a fibrous filler having an average fiber diameter of 1 μm or less. Provided.

  According to the fourth invention of the present invention, in any one of the first to third inventions, a thermoplastic elastomer is further contained as the component (E), and the content thereof is the whole composition (however, the component A propylene-based resin composition is provided that is 1 to 40% by weight of (C): fatty acid amide and component (D): excluding fatty acid metal salt).

According to the fifth invention of the present invention, in any one of the first to fourth inventions, as the component (F), a crystalline propylene polymer component (a) and a propylene / ethylene copolymer component ( and a propylene / ethylene block copolymer satisfying the following characteristics (1) to (4), the content of which is the whole composition (provided that component (C): fatty acid amide and component (D) ): 20 to 79% by weight of the resin composition (excluding fatty acid metal salts). A propylene-based resin composition is provided.
Characteristic (1): It consists of 65 to 97% by weight of the crystalline propylene polymer component (a) and 3 to 35% by weight of the propylene / ethylene copolymer component (b).
Characteristic (2): The melt flow rate (230 ° C., 2.16 kg load) of the whole component (F) is 3 to 300 g / 10 minutes.
Characteristic (3): The ethylene content of the propylene / ethylene copolymer component (b) is 20 to 80% by weight.
Characteristic (4): The weight average molecular weight of the propylene / ethylene copolymer component (b) is 100,000 to 2,000,000.

  According to the sixth aspect of the present invention, in the fifth aspect, the component (F) is composed of 88 to 96% by weight of the crystalline propylene polymer component (a) and the propylene / ethylene copolymer component (b). 4) to 12% by weight, and the propylene / ethylene copolymer component (b) is a propylene / ethylene block copolymer having an ethylene content of 25 to 65% by weight. Is provided.

  Moreover, according to 7th invention of this invention, the molded object formed by shape | molding the propylene-type resin composition which concerns on any one of 1st-6th invention is provided.

The propylene resin composition and the molded body thereof according to the present invention are mainly composed of a propylene resin, a fibrous filler, a fatty acid amide and a fatty acid metal salt, and have excellent moldability (fluidity), scratch resistance, physical property balance and molding. Appearance.
That is, the propylene-based resin composition of the present invention and the molded product thereof include a specific propylene / ethylene random copolymer, a fibrous filler, a fatty acid amide and a fatty acid metal salt, and, if necessary, a thermoplastic elastomer or a specific propylene.・ By blending with ethylene block copolymer, high moldability (fluidity), physical property balance and molding appearance are expressed, and scratches that occur immediately or over time due to surface damage due to trauma such as contact or collision By further suppressing the loss of the surface aesthetic appearance and the deterioration of the design property due to the whitening phenomenon, excellent scratch resistance can be exhibited.
For this purpose, automotive interior and exterior parts such as trims, housings, pillars, glove boxes, instrument panels, bumpers, fenders, and back doors, home appliance parts, housing equipment such as toilet seats, various industrial parts, and building material parts It can use suitably for uses, such as.

  Hereinafter, the propylene-based resin composition of the present invention and the molded product thereof will be described in detail for each item.

1. Component (1) Component (A) of Propylene Resin Composition: Propylene-Ethylene Random Copolymer Propylene-ethylene random copolymer used in the present invention (hereinafter also simply referred to as component (A)) is MFR. (230 ° C., 2.16 kg load) is 0.5 to 200 g / 10 minutes, preferably 1 to 150 g / 10 minutes, particularly preferably 2 to 50 g / 10 minutes, and an ethylene content of 0.1 to 5 It is a propylene-ethylene random copolymer of wt%, preferably 0.3 to 4.5 wt%, particularly preferably 0.5 to 4 wt%.
The component (A) has a feature that contributes particularly to the development of excellent scratch resistance and excellent moldability (fluidity) in the propylene-based resin composition of the present invention and the molded body thereof.
That is, the component (A) is a filler that is added to the propylene-based resin composition of the present invention alone and further compatible with the later-described component (F) to give flexibility and disperse in the molded article. Efficiently relieves high stress concentration generated in the molded body starting from the component (and elastomer component), and is less likely to induce breakage even for large deformations locally generated due to, for example, rubbing by foreign matter For example, as compared with the conventional propylene-based resin composition using only the component (F) described later, the moldability (fluidity), physical property balance, and molding appearance are maintained well while being scratch-resistant. The characteristics can be greatly improved. This scratch resistance is evaluated by various methods depending on the material application, but is considered to be a physical property that improves as the deformation resistance against the frictional force generated when the material surface rubs against foreign matter is essentially higher. .
The MFR of the component (A) is a value measured according to JIS K7210, and the ethylene content is a value measured by infrared spectroscopy (IR) or NMR.

Here, when the MFR (230 ° C., 2.16 kg load) of the component (A) is less than 0.5 g / 10 minutes, the propylene-based resin composition of the present invention and the moldability (fluidity) of the molded product and Molding appearance is reduced. On the other hand, when it exceeds 200 g / 10 minutes, the impact strength decreases.
On the other hand, when the ethylene content of the component (A) is less than 0.1% by weight, the scratch resistance of the propylene-based resin composition of the present invention and the molded product thereof is lowered. On the other hand, when it exceeds 5% by weight, the physical property balance (rigidity, etc.) is lowered.

As a manufacturing method of the component (A) used for this invention, the method using various well-known catalysts, for example, a Ziegler-Natta catalyst, a metallocene catalyst, is mentioned.
In general, with Ziegler-Natta catalysts, there is a concern that the ethylene composition distribution in propylene-ethylene random copolymers produced from the heterogeneity of active sites tends to be wide and there is a concern about rigidity reduction. It is preferable to use a propylene / ethylene random copolymer obtained by use, and an ethylene content of 1.5% by weight or more is more preferable, and an ethylene content of 2.5% by weight or more is particularly preferable.
In addition, you may use 2 or more types of components (A) together.

  The metallocene catalyst referred to here is (i) a transition metal compound belonging to Group 4 of the periodic table (so-called metallocene compound) containing a ligand having a cyclopentadienyl skeleton, (ii) an aluminum oxy compound, and the above transition metal compound. At least one cocatalyst selected from the group of compounds consisting of ionic compounds or Lewis acids, solid acid fine particles, and ion-exchanged layered silicates that can be converted to cations by reacting with iii) A catalyst comprising an organoaluminum compound, and any known catalyst capable of producing a propylene / ethylene random copolymer of the component (A) according to the present invention can be used.

  The metallocene compound is a cross-linked metallocene compound capable of stereoregular polymerization of propylene, and preferably a metallocene compound capable of isoregular polymerization of propylene. For example, JP-A-2-131488 and JP-A-2 JP-A-776887, JP-A-4-21694, JP-A-4-300787, JP-A-5-43616, JP-A-6-1000057, JP-A-5-209913, JP-A-6-239914. No. 11-240909, JP-A 6-184179, JP 2003-533550 A, and the like.

More specifically, dimethylsilylene bis [1- (2-methyl-4-phenylindenyl)] zirconium dichloride, dimethylsilylene bis [1- (2-ethyl-4-phenylindenyl)] zirconium dichloride, dimethyl Silylenebis [1- (2-methyl-4- (1-naphthyl) -indenyl)] zirconium dichloride, dimethylsilylenebis [1- (2-methyl-4,5-benzoindenyl)] zirconium dichloride, dimethylsilylene [ 1- (2-methyl-4- (4-t-butylphenyl) indenyl)] [1- (2-i-propyl-4- (4-t-butylphenyl) indenyl)] zirconium dichloride, dimethylsilylenebis [ 1- (2-methyl-4-phenyl-4H-azurenyl)] zirconium dichloride, di Tylsilylenebis [1- (2-ethyl-4- (4-chlorophenyl) -4H-azurenyl)] zirconium dichloride, dimethylsilylenebis [1- (2-ethyl-4- (2-fluorobiphenylyl) -4H-azurenyl) ] Zirconium dichloride, dimethylgermylenebis [1- (2-ethyl-4- (4-chlorophenyl) -4H-azulenyl)] zirconium dichloride, dimethylgermylenebis [1- (2-ethyl-4-phenylindenyl)] Zirconium compounds such as zirconium dichloride can be exemplified.
In the above, compounds in which zirconium is replaced with hafnium can also be used. Two or more types of complexes can also be used. Further, the chloride can be replaced with other halogen compounds, hydrocarbon groups such as methyl and benzyl, amide groups such as dimethylamide and diethylamide, alkoxide groups such as methoxy group and phenoxy group, hydride groups and the like.
Of these, metallocene compounds having substituents at the 2-position and 4-position and having a bisindenyl group or azulenyl group crosslinked with silicon or a germyl group as a ligand are preferred.

As for the cocatalyst, methylaluminoxane, isobutylaluminoxane and the like are used as the aluminum oxy compound, and as the ionic compound which can be converted into a cation by reacting with the transition metal compound, N, N-dimethylanilinium tetrakispenta is used. Fluorophenylborate, triphenylcarbyltetrakispentafluorophenylborate, etc., Lewis acid is trispentaphenylborate, solid acid fine particles are alumina, silica-alumina, etc. Examples of layered silicates include silicates having a 2: 1 type structure, such as montmorillonite, bentonite, and mica that may be chemically treated.
When these compounds are soluble in a solvent or the like, they can be used by being supported on a porous fine-particle inorganic or organic carrier. Among the above promoters, an ion-exchange layered silicate is preferable.

  Examples of the organoaluminum compound include trialkylaluminum such as triethylaluminum, triisopropylaluminum, and triisobutylaluminum, dialkylaluminum halide, alkylaluminum sesquihalide, alkylaluminum dihalide, alkylaluminum hydride, and organoaluminum alkoxide.

  Examples of the polymerization method include a slurry method using an inert solvent in the presence of the catalyst, a solution method, a gas phase method substantially using no solvent, or a bulk polymerization method using a polymerization monomer as a solvent. . In order to control to a desired MFR and ethylene content, for example, the polymerization temperature, the amount of comonomer, and the amount of hydrogenation can be adjusted.

In the propylene-based resin composition of the present invention, the content of the propylene-ethylene random copolymer of component (A) is the entire propylene-based resin composition (fatty acid amide of component (C) and fatty acid metal salt of component (D). The weight is 20 to 99% by weight.
When the component (A) is less than 20% by weight, the scratch resistance of the propylene-based resin composition of the present invention and the molded product thereof is lowered. On the other hand, if it exceeds 99% by weight, the physical property balance (rigidity, impact strength) is lowered.

(2) Component (B): Fibrous filler The fibrous filler used in the present invention (hereinafter also simply referred to as component (B)) is various fibrous fillers, specifically known inorganic fibers and organic fibers. It is.
Component (B) contributes to improving the balance of physical properties such as rigidity, imparting dimensional stability (reducing linear expansion coefficient) and improving environmental adaptability in the propylene-based resin composition of the present invention and molded articles thereof. It has the feature to do.

As the component (B), basic magnesium sulfate fiber (magnesium oxysulfate fiber), potassium titanate fiber, aluminum borate fiber, calcium silicate fiber, calcium carbonate fiber, carbon fiber, glass fiber, wollastonite, zonotrite, Wood fibers, various metal fibers, natural fibers such as cotton, silk, wool or hemp, regenerated fibers such as rayon or cupra, semi-synthetic fibers such as acetate and promix, polyester, polyacrylonitrile, polyamide, aramid, polyolefin, etc. Examples include fibers.
Among these, basic magnesium sulfate fiber (magnesium oxysulfate fiber), potassium titanate fiber, aluminum borate fiber, calcium silicate fiber, calcium carbonate fiber, carbon fiber (small diameter), etc. (also called whisker) Fine fiber fillers and synthetic fibers such as polyester and polyamide provide the propylene-based resin composition of the present invention and physical properties balance such as rigidity of the molded product, imparting dimensional stability (reducing linear expansion coefficient, etc.) and scratch resistance. It is preferable from the standpoints of a large improvement effect such as adhesiveness and excellent environmental adaptability, and basic magnesium sulfate fiber (magnesium oxysulfate fiber), potassium titanate fiber, and carbon fiber (small diameter) are more preferable. Magnesium sulfate fiber (magnesium oxysulfate fiber) It divided preferable.

The average fiber diameter of the component (B) is not particularly limited, but is preferably 1 μm or less, and more preferably 0.8 μm or less.
Moreover, although these average fiber lengths are not specifically limited, 100 micrometers or less are preferable and 1 micrometer-20 micrometers are more preferable.
Further, the component (B) may be used in the form of a compressed soul shape, a granulated shape or a granulated shape produced for the purpose of improving the mixing workability.
In addition, the component (B) is a variety of organic titanate coupling agents and organic silane coupling agents for the purpose of improving adhesion or dispersibility with the component (A) and the component (F) described later. Alternatively, a surface treated with a modified polyolefin grafted with an unsaturated carboxylic acid or an anhydride thereof, a fatty acid, a fatty acid metal salt, a fatty acid ester, or the like may be used.

The manufacturing method of a component (B) is not specifically limited, It manufactures with a well-known various manufacturing method etc. For example, in the case of basic magnesium sulfate fiber (magnesium oxysulfate fiber), it is produced by a method such as hydrothermal synthesis using magnesium hydroxide and magnesium sulfate as raw materials.
In addition, you may use 2 or more types of components (B) together.

In the propylene resin composition of the present invention, the content of the component (B) is 1 on the basis of the entire propylene resin composition (excluding the fatty acid amide of the component (C) and the fatty acid metal salt of the component (D)). -80 wt%, preferably 2-30 wt%, more preferably 3-15 wt%.
When the component (B) is less than 1% by weight, the rigidity of the propylene-based resin composition of the present invention and the molded product thereof is lowered. On the other hand, when it exceeds 80% by weight, the scratch resistance, impact strength and appearance of the molded article are lowered.

(3) Component (C): Fatty acid amide The fatty acid amide used in the present invention (hereinafter also simply referred to as component (C)) is generally used as a lubricant and is usually a fatty acid amide having 10 or more carbon atoms. Preferably, it is a fatty acid amide represented by the following formula (1).
RCONH ₂ Formula (1)
[In Formula (1), R represents a C10-25 linear aliphatic hydrocarbon group. ]

  Component (C) has a feature that contributes particularly to reducing surface friction and improving scratch resistance in the propylene-based resin composition of the present invention and molded articles thereof.

Examples of the component (C) include amides of saturated fatty acids such as lauric acid amide, myristic acid amide, palmitic acid amide, stearic acid amide, and behenic acid amide, oleic acid amide, linoleic acid amide, linolenic acid amide, and erucic acid amide. Amides of unsaturated fatty acids such as arachidonic acid amide, eicosapentaenoic acid amide and docosahexaenoic acid amide.
Among these, unsaturated fatty acid amides are preferable, and monounsaturated fatty acid amides such as erucic acid amide and oleic acid amide are more preferable.
Furthermore, this component (C) has the effect of improving the scratch resistance if the carbon number of the component (C) is larger than that of the later-described component (D) fatty acid metal salt. There is a big tendency and it is preferable.
In addition to the function as a lubricant such as meltability, mold release, abrasion resistance, antiblocking property, and smoothness, this component (C) is used for molding a propylene-based resin composition containing a fibrous filler. Excellent moldability and surface properties are also exhibited.
Furthermore, even in the case of a molded body, it is a phenomenon that occurs immediately or over time due to the inclusion of fibrous filler due to external damage, such as contact and collision, in the molding stage, distribution stage, and use stage. It is based on the knowledge of the present inventor that the performance of erasing the traces of the trauma that manifests on the surface of the molded body, which can be said to be a so-called whitening phenomenon, in color.
In addition, you may use 2 or more types of components (C) together.

In the propylene-based resin composition of the present invention, the content of the component (C) is 100 wt% of the total amount of the components (A) to (B) (optionally, the component (E) or / and the component (F)). The amount is 0.01 to 5 parts by weight, preferably 0.05 to 3 parts by weight, and more preferably 0.1 to 2 parts by weight.
When the component (C) is less than 0.01 part by weight, the scratch resistance of the propylene-based resin composition of the present invention and the molded product thereof is lowered. On the other hand, when it exceeds 5 parts by weight, rigidity, heat resistance and economic efficiency are lowered.

(4) Component (D): Fatty acid metal salt The fatty acid metal salt used in the present invention (hereinafter also simply referred to as component (D)) is a fatty acid metal salt represented by the following general formula (2) or general formula (3). Is a basic fatty acid metal salt.
M (RCOO) _n (2)
mM ¹ O · M ² (RCOO) ₂ (3)
[In the formula, R is a carboxyl from a saturated or unsaturated aliphatic monocarboxylic acid having 8 to 32 carbon atoms (preferably 10 to 22 carbon atoms) optionally having one or more hydroxyl groups in the molecule. It represents a residue obtained by removing a group. n represents an integer of 1 or 2, and when n = 2, two Rs may be the same or different. M represents a metal belonging to Group 1, Group 2, Group 12, or Group 13 of the periodic table. M represents the number of excess moles of the metal oxide in the basic fatty acid metal salt represented by the formula (3), and M ¹ and M ² are respectively in the 2nd or 12th group of the periodic table. It belongs to the metal. ]

Specifically, the component (D) is a saturated or unsaturated aliphatic monocarboxylic acid having 8 to 32 carbon atoms (preferably 10 to 22 carbon atoms) which may have one or more hydroxyl groups in the molecule. It consists of a carboxylic acid and a metal belonging to Group 1, Group 2, Group 12, or Group 13 of the periodic table.
In addition, a component (D) contains the compound or mixture of this fatty acid metal salt or this basic fatty acid metal salt, and a metal oxide or / and a metal hydroxide.
Component (D), in the propylene-based resin composition of the present invention and the molded body thereof, by enhancing the dispersion effect of the component (B), etc. Especially, it has the characteristic which contributes to improving a shaping | molding external appearance.

  As the aliphatic monocarboxylic acid in the above formula (2), caprylic acid, 2-ethylhexanoic acid, pelargonic acid, capric acid, neodecanoic acid, undecanoic acid, lauric acid, tridecanoic acid, myristic acid, pentadecanoic acid, palmitic acid, Margaric acid, oleic acid, stearic acid, nonadecanoic acid, arachidic acid, behenic acid, lignoceric acid, serotic acid, montanic acid, melicic acid, succinic acid, lindelic acid, tuzic acid, palmitoleic acid, petraceric acid, elaidic acid, vacsen Examples thereof include acid, linoleic acid, linoelaidic acid, γ-linolenic acid, linolenic acid, ricinoleic acid, 12-hydroxystearic acid, naphthenic acid, and abietic acid. Preferably, at least one selected from lauric acid, myristic acid, palmitic acid, oleic acid, stearic acid, behenic acid, montanic acid and 12-hydroxystearic acid is used.

  Examples of the metal belonging to Group 1, Group 2, Group 12 or Group 13 of the periodic table in the above formula (2) include alkali metals (lithium, sodium, potassium, etc.), alkaline earth metals (calcium, strontium, barium). Etc.), magnesium, zinc, aluminum and the like, and preferably at least one selected from calcium, magnesium, zinc, lithium, sodium and potassium.

As the component (D) represented by the preferred formula (2), lauric acid, myristic acid, palmitic acid, oleic acid, and the like from the viewpoints of improvement in physical properties balance centered on molding appearance, rigidity, and scratch resistance, etc. Fatty acid comprising at least one aliphatic monocarboxylic acid selected from stearic acid, behenic acid, montanic acid and 12-hydroxystearic acid and at least one metal selected from calcium, magnesium, zinc, lithium, sodium and potassium Metal salts are mentioned.
Specifically, calcium stearate, calcium behenate, 12-hydroxy calcium stearate, magnesium palmitate, magnesium oleate, magnesium stearate, magnesium behenate, 12-hydroxy magnesium stearate, zinc stearate, zinc behenate, 12 -Zinc hydroxystearate, sodium stearate, sodium 12-hydroxystearate, potassium stearate, potassium 12-hydroxystearate, lithium stearate, lithium 12-hydroxystearate and the like.

  Among them, particularly preferable component (D) represented by the formula (2) is that the metal is composed of at least one metal selected from calcium, magnesium or zinc, specifically, calcium oleate, Calcium stearate, calcium behenate, 12-hydroxycalcium stearate, magnesium oleate, magnesium stearate, magnesium behenate, 12-hydroxymagnesium stearate, zinc oleate, zinc stearate, zinc behenate, zinc 12-hydroxystearate Etc.

Moreover, the basic fatty acid metal salt as the component (D) represented by the formula (3) is obtained by reaction with an excess amount of a metal compound.
In the formula (3), m represents the excess mole number of the metal oxide in the basic fatty acid metal salt represented by the formula (3) as described above. m is preferably from 0.1 to 2.0, more preferably from 0.1 to 1.0, particularly from 0.2 to 0.5, because the above-described dispersion effect is excellent. Is particularly preferred. If m is less than 0.1, the molded appearance, the balance of physical properties centered on rigidity, and the effect of improving scratch resistance tend to be insufficient. On the other hand, if m exceeds 2.0, the basic fatty acid tends to be insufficient. Since the melting point of the metal salt becomes too high, the above-mentioned effects tend to be insufficient.
As described above, M ¹ and M ² are metals belonging to Group 2 or Group 12 of the periodic table, respectively, and they may be the same or different. Examples of such metals include calcium, magnesium, Zinc and the like can be mentioned.
RCOO represents a saturated or unsaturated fatty acid residue, and is preferably a saturated or unsaturated fatty acid residue having 12 to 22 carbon atoms because it is excellent in the improvement effect.
Examples of such saturated or unsaturated fatty acid residues include residues such as lauric acid, myristic acid, palmitic acid, oleic acid, stearic acid, behenic acid, and 12-hydroxystearic acid.

Examples of the basic fatty acid metal salt as the component (D) represented by the formula (3) used in the present invention include basic calcium laurate, basic magnesium laurate, basic zinc laurate, and basic magnesium myristate. Basic zinc myristate, basic magnesium palmitate, basic zinc palmitate, basic calcium stearate, basic magnesium stearate, basic zinc stearate, basic 12-hydroxy calcium stearate, basic 12-hydroxy stearin Examples thereof include magnesium acid, basic zinc 12-hydroxystearate, basic magnesium behenate, and basic zinc behenate.
The component (D) represented by the formula (3) is preferably basic calcium stearate, basic magnesium stearate, basic zinc stearate, basic 12-hydroxy stearin because it is particularly excellent in the improvement effect. Examples thereof include magnesium acid and basic zinc 12-hydroxystearate.

The fatty acid metal salt or basic fatty acid metal salt as these components (D) can be selected as appropriate depending on the application, required strength, molded appearance, scratch resistance, etc. Can be used alone or in combination.
Here, the basic fatty acid metal salt is an effect of improving the molded appearance, physical property balance and scratch resistance in the propylene resin composition of the present invention and the molded body thereof, and in particular, the molded appearance and scratch resistance improvement effect, among others. , Tend to be superior to fatty acid metal salts.
Moreover, the manufacturing method of component (D) is not particularly limited, but usually a metathesis method (wet method) or a direct method (dry method) is used. For example, the metathesis method (wet method) is a method in which a fatty acid alkali soap and a metal salt are reacted in water to produce a fatty acid metal salt by precipitation.
The direct method (dry method) is a method in which a fatty acid is directly reacted with a metal oxide or hydroxide. Here, these production methods have their respective characteristics, but if anything, the propylene-based resin composition of the present invention and the molding appearance, scratch resistance, and physical property balance improvement effect in the molding are excellent. In view of the above, it is preferable to produce by using a direct method (dry method).
In addition, you may use 2 or more types of components (D) together.

In the propylene-based resin composition of the present invention, the content of the component (D) is 100 weights of the total amount of the components (A) to (B) (optionally, the component (E) or / and the component (F)). The amount is 0.01 to 5 parts by weight, preferably 0.05 to 3 parts by weight, and more preferably 0.1 to 2 parts by weight.
When the component (D) is less than 0.01 part by weight, the physical properties balance and scratch resistance of the propylene-based resin composition of the present invention and the molded product thereof, centering on the rigidity, and scratch resistance are lowered. On the other hand, if it exceeds 5 parts by weight, the heat resistance and the economical efficiency are lowered.
Here, the component (D) is a content weight ratio (component (D) / component (C)) with the component (C), and in the propylene-based resin composition of the present invention, the molding appearance and rigidity are the main components. From the effect of improving physical property balance and scratch resistance, 1/3 to 3/1 is preferable, 1/2 to 2/1 is more preferable, and 1/1 to 2/1 is particularly preferable.

(5) Component (E): Thermoplastic Elastomer In the present invention, the thermoplastic elastomer used as required (hereinafter also simply referred to as component (E)) is various thermoplastic elastomers, specifically known thermoplastics. Examples thereof include ethylene elastomers and thermoplastic styrene elastomers.
Component (E) has a characteristic that contributes particularly to improvement in impact strength and dimensional stability in the propylene-based resin composition of the present invention and molded articles thereof.

Among the components (E), examples of the thermoplastic ethylene elastomer include an ethylene / α-olefin copolymer elastomer and an ethylene / α-olefin / diene terpolymer elastomer.
Specific examples include ethylene / propylene copolymer elastomer (EPR), ethylene / butene copolymer elastomer (EBR), ethylene / hexene copolymer elastomer (EHR), ethylene / octene copolymer elastomer (EOR), ethylene -A propylene-ethylidene norbornene copolymer elastomer (EPDM) etc. are mentioned.

Among the components (E), examples of the thermoplastic styrene elastomer include styrene-butadiene copolymers, styrene-isoprene copolymers, and hydrogenated products thereof.
Specific examples include styrene / ethylene / butene / styrene block copolymer (SEBS) and styrene / ethylene / propylene / styrene block copolymer (SEPS).

Among these components (E), ethylene / butene copolymer elastomer (EBR), ethylene / octene copolymer elastomer (EOR), styrene / ethylene / butene / styrene block copolymer (SEBS) and styrene / ethylene are included. Propylene / styrene block copolymer (SEPS) is preferable, ethylene / butene copolymer elastomer (EBR), ethylene / octene copolymer elastomer (EOR) is effective in improving the impact strength of the propylene resin composition of the present invention, It is more preferable from the viewpoint of economy and the like, and an ethylene / octene copolymer elastomer (EOR) is particularly preferable from the viewpoint of impact strength improvement effect and scratch resistance.
The MFR (230 ° C., 2.16 kg load) of the component (E) is not particularly limited, but is preferably 0.5 g / 10 min or more, more preferably 1 g / 10 min or more, and further preferably 2 to 70 g / 10. Minutes.
When the MFR is less than 0.5 g / 10 min, the appearance of the molded product tends to be deteriorated in the propylene-based resin composition of the present invention and the molded product thereof. Moreover, when MFR exceeds 70 g / 10min, there exists a tendency for impact strength and damage resistance to fall.
The manufacturing method of a component (E) is not specifically limited, It selects suitably from well-known methods and conditions.
In addition, you may use 2 or more types of components (E) together.

In the propylene-based resin composition of the present invention, the content of the component (E) used as necessary is the entire propylene-based resin composition (excluding the fatty acid amide of the component (C) and the fatty acid metal salt of the component (D)). 1 to 40% by weight, preferably 5 to 35% by weight, more preferably 10 to 30% by weight.
When the component (E) is less than 1% by weight, the impact strength of the propylene-based resin composition of the present invention and the molded product thereof is lowered. On the other hand, when it exceeds 40% by weight, rigidity and scratch resistance are lowered.

(6) Component (F): Propylene / ethylene block copolymer In the present invention, the propylene / ethylene block copolymer (hereinafter also simply referred to as component (F)) used as necessary is a crystalline propylene polymer component. It consists of (a) and a propylene / ethylene copolymer component (b) and satisfies the following characteristics 1) to 4).
Characteristic 1): It consists of crystalline propylene polymer component (a) 65 to 97% by weight and propylene / ethylene copolymer component (b) 3 to 35% by weight.
Characteristic 2): The melt flow rate (hereinafter referred to as MFR) (230 ° C., 2.16 kg load) of the entire component (F) is 3 to 300 g / 10 minutes.
Characteristic 3): The ethylene content of the propylene / ethylene copolymer component (b) is 20 to 80% by weight.
Characteristic 4): The weight average molecular weight of the propylene / ethylene copolymer component (b) is 100,000 to 2,000,000.
Component (F) has a characteristic that contributes particularly to the development of moldability (fluidity) and physical property balance (such as rigidity and impact strength) in the propylene-based resin composition of the present invention and molded articles thereof.

The content of the propylene / ethylene copolymer component (b) in the component (F) is 3 to 35% by weight, preferably 4 to 12% by weight, and particularly preferably 5 to 10% by weight. When the content is less than 3% by weight, the impact strength of the propylene-based resin composition of the present invention and the molded article thereof is lowered. On the other hand, when it exceeds 35% by weight, scratch resistance and rigidity are lowered.
Moreover, MFR (230 degreeC, 2.16 kg load) of the whole component (F) is 3-300 g / 10min, Preferably it is 10-200 g / 10min, Most preferably, it is 20-100 g / 10min. If the MFR is less than 3 g / 10 minutes, the moldability (fluidity) and the molded appearance of the propylene-based resin composition of the present invention and the molded product thereof are lowered. On the other hand, when it exceeds 300 g / 10 minutes, the impact strength is lowered.
Further, the ethylene content of the propylene / ethylene copolymer component (b) in the component (F) is 20 to 80% by weight, preferably 25 to 65% by weight, particularly preferably 30 to 60% by weight. When the ethylene content is less than 20% by weight, the impact strength of the propylene-based resin composition of the present invention and the molded article thereof is lowered. On the other hand, when it exceeds 80% by weight, impact strength and scratch resistance are lowered.
The weight average molecular weight (Mw) of the propylene / ethylene copolymer component (b) in the component (F) is 100,000 to 2,000,000, preferably 300,000 to 1,500,000, and particularly preferably 320,000 to 1,000,000. is there. When the weight average molecular weight (Mw) is less than 100,000, the impact strength of the propylene-based resin composition of the present invention and the molded article thereof is lowered. On the other hand, when it exceeds 2 million, the scratch resistance and the appearance of the molded product are deteriorated.
Here, the MFR of the whole component (F) is a value measured in accordance with JIS K7210, and the content (component ratio) of the propylene / ethylene random copolymer component in the component (F), the ethylene content The weight average molecular weight (Mw) is a value measured using a cross fractionator, Fourier transform infrared absorption spectrum analysis, and gel permeation chromatography (GPC).

In the present invention, the production method of the component (F) used as necessary includes slurry polymerization, gas phase polymerization, or liquid phase bulk polymerization using an olefin polymerization catalyst such as a Ziegler catalyst or a metallocene catalyst, As the polymerization method, either batch polymerization or continuous polymerization can be employed.
As the Ziegler-Natta catalyst, a highly stereoregular catalyst is used. As a production example of the Ziegler-Natta catalyst, titanium tetrachloride is reduced with an organoaluminum compound and further treated with various electron donors and electron acceptors. A method of combining the obtained titanium trichloride composition with an organoaluminum compound and an aromatic carboxylic acid ester (see JP-A 56-1000080, JP-A 56-120712, JP-A 58-104907), And supported catalyst methods in which titanium tetrachloride and various electron donors are brought into contact with magnesium halide (Japanese Patent Laid-Open Nos. 57-63310, 63-43915, and 63-83116). And the like.
As the metallocene catalyst, a compound in which a condensed ring system conjugated 5-membered ring such as indene, azulene or fluorene is coordinated to a Group 4 element of the periodic table is preferably used.
Moreover, you may use 2 or more types of components (F) together.

In the propylene-based resin composition of the present invention, the content of the component (F) used as necessary is the entire propylene-based resin composition (excluding component (C): fatty acid amide and component (D): fatty acid metal salt) Is 20 to 79% by weight, preferably 25 to 60% by weight, and more preferably 25 to 50% by weight.
When the content of the component (F) is less than 20% by weight, the physical property balance such as rigidity and impact strength of the propylene-based resin composition of the present invention and the molded product thereof is lowered, moldability (fluidity), molding Appearance also deteriorates. On the other hand, if it exceeds 79% by weight, the scratch resistance decreases.

(7) Other optional components In addition to the above-mentioned components (A) to (F), the propylene-based resin composition of the present invention, if necessary, within a range where the effects of the present invention are not significantly impaired. In addition, other optional components may be blended.
Optional ingredients include coloring materials such as quinacridone, perylene, phthalocyanine, titanium oxide, carbon black, aniline black, antioxidants such as phenols, phosphoruss, sulfurs, and weathering resistances such as hindered amines, benzophenones, and benzotriazoles. Deterioration preventing agent, foaming agent, antistatic agent, nucleating agent, neutralizing agent, flame retardant, metal deactivator, thermoplastic resin other than the components (A) and (B) (high density polyethylene, etc.), Examples include fillers (fillers) other than component (D), lubricants other than component (E), and dispersants other than component (F). Here, a coloring substance having a relatively high coloring power and hiding power, such as the above-described coloring substances, and the exemplified coloring substances, has a tendency to have a large effect of improving the scratch resistance in addition to the original coloring properties, and is preferable.

2. Production of Propylene Resin Composition The propylene resin composition of the present invention can be produced by blending the above-described blending components at the blending ratio described above. Each component is manufactured using a known melt-kneader such as a single-screw extruder, twin-screw extruder, Banbury mixer, roll kneader, kneader, Brabender plastograph, etc., but the propylene-based resin composition is scratch resistant. It is preferable to knead and granulate using a twin-screw extruder from the viewpoint of improving the balance of properties, appearance and physical properties, and industrial economy.
In the case of this kneading and granulation, a blend of the above components (A) to (F) (optional further optional components) may be kneaded at the same time, and in order to improve performance, Each component can be divided, for example, the components (A) and a part of the component (B) can be first kneaded, and then the remaining components can be kneaded and granulated.
In kneading and granulating, for example, component (B) is supplied after melting components (A) to (D), component (E) and component (F) in order to reduce or prevent breakage. For example, the component (B) can be appropriately supplied from the middle of the extrusion screw (cylinder) of the kneader.

3. Molded product of propylene-based resin composition The molded product of the propylene-based resin composition of the present invention can be obtained by various known molding methods.
For example, the propylene-based resin composition of the present invention can be formed by molding methods such as injection molding (including gas injection molding), injection compression molding (press injection), extrusion molding, hollow molding, calendar molding, sheet molding, film molding, and the like. Various molded bodies can be obtained by molding. As the molding method, injection molding, injection compression molding, extrusion molding, and sheet molding are more preferable, and injection molding and injection compression molding are particularly preferable.

  Since the propylene-based resin composition and the molded body thereof according to the present invention have excellent moldability (fluidity), scratch resistance, physical property balance and molded appearance, trims, housings, pillars, glove boxes, instrument panels In addition to automobile interior and exterior parts such as bumpers, fenders, and back doors, it can be suitably used for applications such as household appliance parts, housing equipment such as toilet seats, various industrial parts, and building material parts. From these points, the industrial value of the propylene-based resin composition and its molded body is great.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto without departing from the gist thereof.
The various physical properties in the examples were measured according to the following procedures.

1. Measurement method (1) MFR
Based on JIS K7210, it measured with the load of 2.16kg and the temperature of 230 degreeC. This MFR is an index mainly representing moldability (fluidity), and is preferably 10 g / 10 min or more, and more preferably 15 g / 10 min or more in applications such as the field of automobile parts. preferable.
(2) Scratch resistance An injection molded test piece (flat plate) molded under the conditions shown below was cut into a size of 80 mm × 80 mm and a scratching needle (tip radius 0.25 mm) loaded with a load of 400 g. The scratching speed is 600 mm / min, 30 are scratched at a pitch of 2 mm, and further rotated 90 ° and scratched at a pitch of 2 mm to scratch the grid pattern.
Then, the color difference (SE-2000 made by Nippon Denshoku Industries Co., Ltd.) is used to measure the brightness difference with the standard light source D65 and diffuse illumination 8 ° as the degree of whitening before and after the scratch. The smaller the brightness difference (ΔL), the better the scratch resistance. That is, this scratch resistance (lightness difference (ΔL)) is preferably less than 2.0 in applications such as the field of automobile parts.
(conditions):
Molding machine: Toshiba Machine Co., Ltd., injection molding machine IS170
Clamping force: 170 tons Mold: 120 mm x 120 mm x 3.0 mm flat plate [mirror finish (after hard chrome plating, buffing: abrasive # 3000)]
Cylinder temperature: 185/220/220/210 ° C (nozzle)
Mold temperature: 40 ℃
Filling time: 2 seconds Injection pressure: 60 MPa
Holding pressure: 55 MPa
Back pressure: 1.2 MPa (gauge pressure)
Cooling time: 20 seconds

(3) Flexural modulus Based on JIS K7171, it measured (injection molded specimen) at a measurement temperature of 23 ° C. and a bending speed of 2 mm / min. This bending elastic modulus is preferably 1000 MPa or more, and more preferably 1200 MPa or more, for example, in applications such as the field of automobile parts.
(4) Charpy impact strength (notched)
In accordance with JIS K7111, measurement was performed at a measurement temperature of 23 ° C. (injection molding test piece). The Charpy impact strength, for example, in applications such as automobile parts field, is preferably 5 KJ / ^{m 2} or more, more preferably least 10 KJ / ^{m 2} or more, and particularly preferably 30 KJ / ^{m 2} or more .
(5) Molding appearance The state of occurrence of agglomerates on the surface of the injection molded test piece (flat plate) shown in (2) Scratch resistance is visually observed and evaluated according to the following criteria.
○: No agglomerates are observed.
X: Agglomerates (parts) are observed partially or entirely.

2. Materials (1) Component (A): Propylene / ethylene random copolymer (A) -1: Polymerized using a metallocene catalyst, MFR (230 ° C., load 2.16 kg) is 25 g / 10 min, ethylene content is Propylene / ethylene random copolymer of 3.4% by weight.
(A) -2: A propylene / ethylene random copolymer polymerized using a metallocene catalyst, having an MFR (230 ° C., load 2.16 kg) of 30 g / 10 min and an ethylene content of 0.9% by weight.
(A) -3: A propylene / ethylene random copolymer that is polymerized using a Ziegler-Natta catalyst, has an MFR (230 ° C., load 2.16 kg) of 30 g / 10 min, and an ethylene content of 2.5 wt%.

(2) Component (B): Fibrous filler (B) -1: Basic magnesium sulfate fiber (whisker-shaped) having an average fiber diameter = 0.5 μm, an average fiber length = 10 μm, and a true specific gravity = 2.3 In a granular form).
(3) Component (C): fatty acid amide (C) -1: erucic acid amide.
(4) Component (D): fatty acid metal salt (D) -1: calcium stearate.
(D) -2: Basic magnesium stearate.

(5) Component (E): Thermoplastic elastomer (E) -1: Ethylene / octene copolymer elastomer having an octene content of 38% by weight and an MFR (230, 2.16 kg load) of 2.0 g / 10 min.
(6) Component (F): Propylene / ethylene block copolymer (F) -1: Polymerized using a Ziegler-Natta catalyst, the propylene / ethylene copolymer component content (b) is 8% by weight, MFR (230 ° C., load 2.16 kg) is 30 g / 10 min, propylene / ethylene copolymer component content (b) is 53% by weight ethylene content, propylene / ethylene random copolymer component weight average molecular weight ( A propylene / ethylene block copolymer having a Mw) of 470,000.

3. Examples and Comparative Examples [Example 1]
As shown in Table 1, propylene / ethylene random copolymer ((A) -1) 97% by weight, basic magnesium sulfate fiber ((B) -1) 3% by weight, erucic acid amide ((C) -1) 0.2 part by weight, 0.3 part by weight of calcium stearate ((D) -1), 0.15 part by weight of carbon black # 30 (manufactured by Mitsubishi Chemical Corporation, particle diameter 30 nm) as a black pigment, phenolic antioxidant (Irganox 1010, manufactured by Ciba Specialty Chemicals Co., Ltd.) 0.1 parts by weight, phosphorus antioxidant (Irgafos 168, manufactured by Ciba Specialty Chemicals Co., Ltd.) 0.05 parts by weight, twin screw extruder (manufactured by Nippon Steel Works: TEX30α) ) Was used for melt kneading and granulation under conditions of a screw speed of 300 rpm and a kneading temperature of 220 ° C. to obtain a resin composition.
Thereafter, the test piece was subjected to a molding temperature of 220 ° C. and an injection pressure of 50 MPa using an injection molding machine (however, the scratch resistance and appearance are the conditions described in 1. Measurement Method, (2) Scratch Resistance). Prepared and measured according to the various measurement methods described above (however, MFR is a granulated pellet).
The evaluation results are shown in Table 2.

[Examples 2 to 9, Comparative Examples 1 to 8]
The said material was mix | blended in the ratio of the composition shown in Table 1, and the resin composition was obtained by the method similar to Example 1. FIG.
About the obtained resin composition, evaluation similar to Example 1 was performed.
The evaluation results are shown in Table 2.

As is apparent from Table 2, the propylene-based resin compositions of the present invention shown in Examples 1 to 9 satisfying the respective requirements in the essential constituent elements of the present invention are MFR, scratch resistance, flexural modulus, Charpy impact strength, The molding appearance is excellent and improved.
On the other hand, the propylene-based resin compositions shown in Comparative Examples 1 to 8 have poor performance balance and are inferior.
For example, in Comparative Example 1 in which component (B) is not blended, the MFR, scratch resistance, Charpy impact strength, and molded appearance are good, but the flexural modulus is significantly different from Example 1. This indicates that the flexural modulus is remarkably different depending on whether or not the component (B) is contained, and it is essential that the component (B) satisfies the requirements of the present invention.
Further, in Comparative Example 2 in which component (C) and component (D) were not blended, the MFR and scratch resistance were good, but the flexural modulus, Charpy impact strength, and molded appearance differed significantly from Example 1. . This is because the flexural modulus and the molded appearance are particularly different depending on the presence or absence of the component (C) and the component (D), and it is essential that the component (C) and the component (D) satisfy the requirements of the present invention. It is shown that.

Further, in Comparative Example 3 where the component (A), the component (C) and the component (D) are not blended, the MFR, the flexural modulus and the Charpy impact strength are good, but the scratch resistance and the molded appearance are those of Example 4. There was a significant difference. This is because the scratch resistance and the molded appearance are remarkably different depending on whether or not the component (A), the component (C) and the component (D) are contained. The component (A), the component (C) and the component (D) It is essential to meet the requirements of
In Comparative Example 4 in which component (A) was not blended, the MFR, flexural modulus, Charpy impact strength and molded appearance were good, but the scratch resistance was significantly different from Example 4. This indicates that the scratch resistance is remarkably different depending on whether or not the component (A) is contained, and it is essential that the component (A) satisfies the requirements of the present invention.

Further, in Comparative Example 5 in which component (B) was not blended, the MFR, scratch resistance, Charpy impact strength and molded appearance were good, but the flexural modulus was significantly different from Example 4. This indicates that the flexural modulus is remarkably different depending on whether or not the component (B) is contained, and it is essential that the component (B) satisfies the requirements of the present invention.
In Comparative Example 6 in which component (C) was not blended, the MFR, flexural modulus, Charpy impact strength and molded appearance were good, but the scratch resistance was significantly different from Example 4. This indicates that the scratch resistance varies remarkably depending on whether or not the component (C) is contained, and it is essential that the component (C) satisfies the requirements of the present invention.

In Comparative Example 7 in which component (D) was not blended, the MFR, scratch resistance, flexural modulus and Charpy impact strength were good, but the molded appearance was significantly different from Example 4. This indicates that the molded appearance is remarkably different depending on whether or not the component (D) is contained, and that the component (D) must satisfy the requirements of the present invention.
Further, in Comparative Example 8 in which component (C) and component (D) were not blended, the MFR, flexural modulus and Charpy impact strength were good, but the scratch resistance and the molded appearance differed significantly from Example 4. . This is because the scratch resistance and the molded appearance are remarkably different depending on whether or not the component (C) and the component (D) are contained, and it is essential that the component (C) and the component (D) satisfy the requirements of the present invention. Is shown.

The propylene-based resin composition and molded product thereof according to the present invention have excellent moldability (fluidity), scratch resistance, physical property balance and molded appearance, and are excellent in environmental adaptability such as recyclability. For automobile interior and exterior parts such as housings, pillars, glove boxes, instrument panels, bumpers, fenders, and back doors, home appliance parts, toilet equipment such as toilet seats, various industrial parts, building material parts, etc. It can be used suitably.
Therefore, the propylene-based resin composition and the molded body thereof of the present invention are extremely useful in industry.

Claims (7)

A propylene-based resin composition comprising the following components (A) to (D):
Component (A): Propylene-ethylene random copolymer having a melt flow rate (230 ° C., 2.16 kg load) of 0.5 to 200 g / 10 min and an ethylene content of 0.1 to 5% by weight; 20 to 99 weight%
Component (B): Fibrous filler; 1 to 80% by weight
Component (C): Fatty acid amide; 0.01 to 5 parts by weight Component (D): Fatty acid metal salt; 0.01 to 5 parts by weight However, the contents of Component (C) and Component (D) are the respective components It is a value per 100 parts by weight of the total amount of (A) to (B).   The propylene-based resin composition according to claim 1, wherein the component (A) is a propylene-ethylene random copolymer polymerized using a metallocene catalyst.   The propylene-based resin composition according to claim 1 or 2, wherein the component (B) is a fibrous filler having an average fiber diameter of 1 µm or less.   Further, as a component (E), a thermoplastic elastomer is contained, and the content thereof is 1 to 40% by weight of the whole composition (excluding the component (C): fatty acid amide and the component (D): fatty acid metal salt). The propylene-based resin composition according to any one of claims 1 to 3, wherein Further, as component (F), a propylene / ethylene block copolymer comprising a crystalline propylene polymer component (a) and a propylene / ethylene copolymer component (b) and satisfying the following characteristics (1) to (4): 2. The coalescence is contained, and the content thereof is 20 to 79% by weight of the whole composition (excluding component (C): fatty acid amide and component (D): fatty acid metal salt). The propylene-type resin composition of any one of -4.
Characteristic (1): It consists of 65 to 97% by weight of the crystalline propylene polymer component (a) and 3 to 35% by weight of the propylene / ethylene copolymer component (b).
Characteristic (2): The melt flow rate (230 ° C., 2.16 kg load) of the whole component (F) is 3 to 300 g / 10 minutes.
Characteristic (3): The ethylene content of the propylene / ethylene copolymer component (b) is 20 to 80% by weight.
Characteristic (4): The weight average molecular weight of the propylene / ethylene copolymer component (b) is 100,000 to 2,000,000.   The component (F) is composed of 88 to 96% by weight of the crystalline propylene polymer component (a) and 4 to 12% by weight of the propylene / ethylene copolymer component (b), and the propylene / ethylene copolymer component ( 6. The propylene-based resin composition according to claim 5, wherein the propylene / ethylene block copolymer has an ethylene content of 25 to 65% by weight in b).   The molded object formed by shape | molding the propylene-type resin composition of any one of Claims 1-6.