JPH0119814B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a propylene polymer composition having excellent rigidity, impact resistance, gloss, and heat resistance. [Prior Art] Crystalline polypropylene has excellent rigidity, surface gloss, heat resistance, etc., but has the drawback of poor impact resistance. As a method of improving impact resistance, a method of mixing a propylene polymer with a rubber-like substance such as polyisobutylene, polybutadiene, amorphous ethylene-propylene copolymer, or polyethylene has been widely used. However, on the other hand, these modifiers have the disadvantage that they are softer than propylene polymers and significantly reduce the inherent characteristics of propylene polymers, such as rigidity, heat resistance, and surface hardness. On the other hand, attempts have been made to mix a polyamide resin with a propylene polymer for the purpose of improving the heat resistance, rigidity, etc. of the propylene polymer, but the compatibility between the two is extremely poor. Therefore, as a method to improve the compatibility between polyolefin resin such as propylene polymer and polyamide, polyolefin resin 40-90
A polymer blend consisting of 5 to 50 parts by weight of polyamide and 2 to 25 parts by weight of ionomer (Japanese Patent Publication No. 43-6529) has been proposed.
Such compositions have the disadvantage of poor impact resistance when polypropylene is used as the polyolefin. A method in which a modified polyolefin into which at least one of acid, ester, amide, acid anhydride, and epoxide groups has been introduced is used as the polyolefin when polyolefin and polyamide are mixed (Japanese Patent Publication No. 30945/1983), or crystalline polypropylene. A method of intervening maleic anhydride-modified polypropylene when blending polyamide and polyamide has been proposed (Kobunshi Kagaku 29 , 265 (1972)). However, although these methods improved the compatibility between polypropylene and polyamide, the effect of improving impact resistance was not sufficient. [Problems to be Solved by the Invention] In view of the current situation, the present inventor has conducted various studies for the purpose of improving the impact resistance, paintability, etc. of a composition consisting of crystalline polypropylene and polyamide, and as a result, has found the following: It was discovered that the above object could be achieved by adding to polypropylene and polyamide a graft-modified product of a specific ethylene/α-olefin copolymer with an unsaturated dicarboxylic acid or its derivative, and the proposal was previously made (Japanese Patent Application No. 22882/1989). issue). However, although the impact resistance of the composition specifically described in the above proposal is improved, the fluidity and gloss of the composition are somewhat reduced, and the effect of improving impact resistance may not be sufficient depending on the application. It was something I couldn't say. The present invention aims to solve such problems, and uses a specific modified propylene/α-olefin random copolymer and a specific modified ethylene/α-olefin random copolymer as an impact modifier. It has been discovered that the impact resistance of a composition comprising a crystalline propylene polymer and polyamide can be significantly improved by using them together. [Means for solving the problem] That is, the present invention comprises 95 to 5 parts by weight of propylene polymer (A), 5 to 95 parts by weight of polyamide (B), and
(A) + (B) = 100 parts by weight, X-ray crystallinity 0 to 30% and propylene content 50 to 70
To 100 parts by weight of propylene/α-olefin random copolymer (C) of mol%, 0.01 part of a graft monomer selected from unsaturated carboxylic acids or derivatives thereof is added.
1 to 5 parts by weight of graft-modified modified propylene/α-olefin random copolymer (D) 1 to 5 parts by weight
99 parts by weight, X-ray crystallinity of 0 to 50% and ethylene content of 55 to 95 mol%.
Modified ethylene/α-olefin random copolymer (F)99 to 100 parts by weight of α-olefin random copolymer (E) is graft-modified with 0.01 to 5 parts by weight of a graft monomer selected from unsaturated carboxylic acids or derivatives thereof. 1 part by weight [however, (D) + (F) = 2 to 100 parts by weight],
The present invention provides a propylene polymer composition with excellent rigidity, impact resistance, heat resistance, gloss, etc. [Function] The propylene polymer used in the present invention is crystalline and preferably has a density of 0.89 to 0.93.
g/cm ³ , melt flow rate (MFR: ASTM
D 1238, L) is 0.01 to 50 g/10 min, and is a propylene homopolymer or propylene and 20 mol% or less of ethylene, 1-butene, 4
- It is a block or random copolymer with α-olefin such as methyl-1-pentene. The propylene polymer (A) used in the present invention is a graft monomer partially or wholly selected from unsaturated carboxylic acids or derivatives thereof, usually 0.001
from 10% to 10% by weight, preferably from 0.1 to 5% by weight
It is preferable to use a graft-modified propylene polymer because it has an excellent modification effect on impact resistance and the like. The polyamide (B) used in the present invention is hexamethylene diamine, decamethylene diamine, dodecamethylene diamine, 2,2,4- or 2,4,4-
Trimethylhexamethylene diamine, 1,3- or 1,4-bis(aminomethyl)cyclohexane, bis(p-aminocyclohexylmethane),
aliphatic such as m- or p-xylylenediamine;
By polycondensation of alicyclic, aromatic, etc. diamines with aliphatic, alicyclic, aromatic, etc. dicarboxylic acids such as adipic acid, suberic acid, sebacic acid, cyclohexanedicarboxylic acid, terephthalic acid, isophthalic acid, etc. The resulting polyamide, ε-aminocaproic acid,
Polyamides obtained by condensation of aminocarboxylic acids such as 11-aminoundecanoic acid, polyamides obtained from lactams such as ε-caprolactam and ω-laurolactam, non-polymerized polyamides made of these components, mixtures of these polyamides, etc. Illustrated. Specifically, nylon 6, nylon
66, nylon 610, nylon 9, nylon 11, nylon 12, nylon 6/66, nylon 66/610,
Examples include nylon 6/11. Among these, nylon 6 and nylon 66 are preferred because of their good rigidity and heat resistance. Although the molecular weight is not particularly limited, the relative viscosity ηr (JIS K6810, 98%
Polyamides with a hardness (measured in sulfuric acid) of 1.0 or more are used, and among them, polyamides of 2.0 or more are preferred because they have excellent mechanical strength. The modified propylene/α-olefin random copolymer (D) used in the present invention has an X-ray crystallinity of 0 to 30%, preferably 0 to 20%, and a propylene content of 50 to 70 mol%, preferably 55
0.01 to 5 parts by weight, preferably 0.1 to 5 parts by weight of a graft monomer selected from unsaturated carboxylic acids or derivatives thereof, to 100 parts by weight of a propylene/α-olefin random copolymer (C) containing 0.01 to 65 mol%.
It is a copolymer that has been graft-modified by 1.0 parts by weight. Propylene/α-olefin random copolymer
Even if a copolymer graft-modified with (C) having a crystallinity of 30% and a propylene content exceeding 70 mol% is used, the impact resistance of the propylene polymer composition is not significantly improved. The propylene/α-olefin random copolymer (C) preferably has an intrinsic viscosity [η] of 2 to 10 dl/g, more preferably 3 to 6 dl/g, as measured in decalin at 135°C. When a copolymer with [η] outside the above range is used, the modified propylene/α-olefin random copolymer (D) obtained from the copolymer and the propylene polymer (A) and polyamide (B) ), the difference in melt viscosity tends to increase, the dispersion effect is not sufficient, and the effect of improving impact resistance is not sufficient. In addition to the above properties, the propylene/α-olefin random copolymer (C) has a microisotacticity (hereinafter abbreviated as MIT) of three propylene chains of 0.7 or more, furthermore 0.8 or more and boiling point. The n-heptane insoluble content is 5% by weight or less, and even 3% by weight.
Preferably, it is less than % by weight. If a material with a microisotacticity of less than 0.7 is used, low molecular weight substances will bleed out on the surface of the molded product after aging, resulting in a sticky phenomenon. Furthermore, the large amount of boiling n-heptane insoluble matter is due to the large amount of propylene block-polymerized components, and if such a copolymer is used, the effect of improving impact resistance may be small. . Microisotacticity is a value determined by focusing on three propylene chains using ¹³ C nuclear magnetic resonance spectroscopy, and quantifying the fraction in which three propylene chains are arranged isotactically. The amount of boiling n-heptane insoluble matter is determined by the following method. That is, a small sample of approximately 1 mm x 1 mm x 1 mm and glass beads are placed in a cylindrical glass filter (G3) and extracted using a Soxhlet extractor.
Extract for 14 hours. In this case, the reflux frequency is approximately once/5 minutes. The weight percent of insoluble matter is determined by weighing the dissolved or insoluble matter. Propylene content with the above properties
The 50 to 70 mol% propylene/α-olefin random copolymer (C) is, for example, (a) a composite containing at least magnesium, titanium, and halogen, (b) a metal from Group 1 to Group 3 of the periodic table. It is obtained by random copolymerization of propylene and α-olefin using a catalyst formed from an organometallic compound and (c) an electron donor. Part or all of the electron donor (c) may be immobilized on part or all of the complex (a), or may be brought into preliminary contact with the organometallic compound (b) prior to use. Good too. Particularly preferred is an embodiment in which a part of the electron donor (c) is immobilized on the complex (a), and the remainder is added to the polymerization system as it is or is used after being brought into preliminary contact with the organometallic compound (b). be. In this case, the electron donor immobilized on the complex (a) and the electron donor used by directly adding it to the polymerization system or by pre-contacting it with (b) may be the same or different. You can. The α-olefin component unit constituting the propylene/α-olefin random copolymer (C) is an α-olefin having 2 or more carbon atoms (excluding 3 carbon atoms), especially about 2 to 18 carbon atoms, and ethylene,
Examples include 1-butene, 1-hexene, 4-methyl-1-pentene, 1-decene, etc.
It is one kind or a mixture of two or more kinds of these. The propylene/α-olefin copolymer is usually a copolymer of a propylene component and an α-olefin, but in some cases it may contain a trace amount, for example, 0.5 mol% or less, of a diene component. can not use. As unsaturated carboxylic acids or derivatives thereof,
Acrylic acid, maleic acid, fumaric acid, tetrahydrophthalic acid, itaconic acid, citraconic acid, crotonic acid, isocrotonic acid, nadic acid (endocys-bicyclo[2,2,1]hept-5-ene-2,3-dicarboxylic acid) ), or derivatives thereof, such as acid halides, amides, imides, anhydrides, esters, etc.
Specific examples include maleyl chloride, maleimide, maleic anhydride, citraconic anhydride, monomethyl maleate, dimethyl maleate, and glycidyl maleate. Among these, unsaturated dicarboxylic acids or their acid anhydrides are preferred, and maleic acid, nadic acid, and their acid anhydrides are particularly preferred. The modified ethylene/α-olefin random copolymer (F) used in the present invention has a crystallinity of 0 when measured by X-rays.
to 100 parts by weight of an ethylene/α-olefin random copolymer (E) having an ethylene content of 55 to 95 mol%, preferably 60 to 93 mol%, and an unsaturated carboxylic acid. or a graft monomer selected from its derivatives.
0.01 to 5 parts by weight, preferably 0.1 to 4 parts by weight of the graft-modified copolymer. Ethylene/α-olefin random copolymer (E)
crystallinity of 50% and ethylene content of 95 mol%
The impact resistance of the propylene polymer composition is not improved even if a copolymer graft-modified with more than 10% is used. The ethylene/α-olefin random copolymer (E) usually has a melt flow rate (MFR: ASTM D 1238, L) of 0.01 to 20.
g/10min, preferably in the range of 0.05 to 10g/10min. When a copolymer with MFR outside the above range is used, a modified ethylene/α-olefin random copolymer obtained from the copolymer is used.
The difference in melt viscosity between (F) and the propylene polymer (A) tends to increase, and the dispersion of each component is not necessarily sufficient, so that the effect of improving impact resistance may not be sufficient. The ethylene/α-olefin random copolymer
The α-olefin component units constituting (E) are:
It is an α-olefin having 3 or more carbon atoms, especially about 3 to 18 carbon atoms, and examples include propylene, 1-butene, 1-hexene, 4-methyl-1-pentene, and 1-decene. Or a mixture of two or more. Among these, α-olefins having 4 or more carbon atoms are preferred. The ethylene/α-olefin random copolymer is usually a copolymer of an ethylene component and an α-olefin, but in some cases it may contain a trace amount, for example, 0.5 mol% or less of a diene component. I can't help it. The graft monomer selected from the unsaturated carboxylic acid or its derivative is combined with propylene/α-olefin random copolymer (C) or ethylene/α-
In order to produce the modified propylene/α-olefin random copolymer (D) or the modified ethylene/α-olefin random copolymer (F) by graft copolymerization with the olefin random copolymer (E), conventional Various known methods can be employed. For example, a method in which the propylene/α-olefin random copolymer (C) or the ethylene/α-olefin random copolymer (E) is melted and a graft monomer is added to perform graft copolymerization, or the graft monomer is dissolved in a solvent and the graft monomer is There is a method of graft copolymerization by adding. In either case,
In order to efficiently graft copolymerize the graft monomer, it is preferable to carry out the reaction in the presence of a radical initiator. Grafting reactions are usually
It is carried out at a temperature of 60 to 350°C. The proportion of the radical initiator used is usually in the range of 0.001 to 1 part by weight per 100 parts by weight of the propylene/α-olefin random copolymer or ethylene/α-olefin random copolymer. As radical initiators, organic peroxides, organic peresters such as benzoyl peroxide, dichlorobenzoyl peroxide, dicumyl peroxide, di-tert
-butyl peroxide, 2,5-dimethyl-2,
5-di(peroxidebenzoate)hexyne-
3,1,4-bis(tert-butylperoxyisopropyl)benzene, lauroyl peroxide,
tert-butyl peracetate, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexyne-3,2,5-dimethyl-2,5-di(tert-
butyl peroxy)hexane, tert-butyl perbenzoate, tert-butyl perphenyl acetate, tert-butyl perisobutyrate, tert-
Butyl per-sec-octoate, tert-butyl perpivalate, cumyl perpivalate and
tert-butyl perdiethyl acetate, other azo compounds such as azobisisobutyronitrile,
There is dimethyl azoisobutyrate. Among these, dicumyl peroxide, di-tert-butyl peroxide, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexyne-3,2,
Dialkyl peroxides such as 5-dimethyl-2,5-di(tert-butylperoxy)hexane and 1,4-bis(tert-butylperoxyisopropyl)benzene are preferred. The propylene polymer composition of the present invention preferably contains 95 to 5 parts by weight of the propylene polymer (A).
90 to 10 parts by weight, polyamide (B) 5 to 95 parts by weight, preferably 10 to 90 parts by weight, and (A)+(B)=
For 100 parts by weight, 1 to 99 parts by weight, preferably 3 to 50 parts by weight of modified propylene/α-olefin random copolymer (D) and modified ethylene/α
- Olefin random copolymer (F) 49 to 1 part by weight, preferably 3 to 50 parts by weight [However, (D) + (F) =
2 to 100 parts by weight, preferably 5 to 50 parts by weight]. Propylene polymer (A) is 5
If the amount is less than 5 parts by weight, the polyamide (B) will not have the effect of modifying moisture resistance, chemical resistance, etc. No modification effect can be obtained in terms of barrier properties, etc. Modified propylene・α−
If the amount of either or both of the olefin random copolymer (D) and the modified ethylene/α-olefin random copolymer (F) is less than 1 part by weight, a composition with excellent impact resistance cannot be obtained; When the total amount (D) + (F) of modified propylene/α-olefin random copolymer (D) and modified ethylene/α-olefin random copolymer (F) exceeds 100 parts by weight, rigidity, heat resistance, Surface hardness etc. are greatly impaired. To obtain the propylene polymer composition of the present invention,
Propylene polymer (A), polyamide (B), modified propylene/α-olefin random copolymer (D), and modified ethylene/α-olefin random copolymer (F)
and various known methods within the above range, such as a Henschel mixer, a V-blender, a ribbon blender,
A method of mixing with a tumbler blender, etc., or after mixing, a single screw extruder, twin screw extruder, kneader,
A method may be adopted in which the mixture is melt-kneaded using a Banbury mixer or the like, followed by granulation or pulverization. The propylene polymer composition of the present invention may contain a heat stabilizer, a weather stabilizer, an antistatic agent, a lubricant, a slip agent, a nucleating agent, a flame retardant, an oil agent, a pigment, a dye, etc. within a range that does not impair the purpose of the present invention. You may also mix it with The propylene polymer composition of the present invention further contains inorganic fillers, ie, powder fillers, such as oxides such as iron oxide, alumina, magnesium oxide, calcium oxide, zinc white, aluminum hydroxide, magnesium hydroxide, basic fillers, etc. Hydrated metal oxides such as magnesium carbonate, calcium hydroxide, tin oxide hydrate, zirconium oxide hydrate, etc.; carbonates such as calcium carbonate, magnesium carbonate, etc.; such as talc, clay, bentonite, attapulgite, etc. silicates; borates such as barium borate, zinc borate, aluminum phosphate,
Phosphates such as sodium tripolyphosphate, etc.;
Sulfates such as gypsum; sulfites; and mixtures of two or more of these; or fibrous fillers;
For example, glass fibers, potassium titanate fibers, metal-coated glass fibers, ceramic fibers, wollastonite, carbon fibers, metal carbide fibers, cured metal fibers, and other spherical objects such as glass beads, glass balloons, and glass balloons, and glass. Propylene polymer (A) powder, glass flakes, mica, etc.
+ Polyamide (B) = 100 parts by weight, preferably 5 to 150 parts by weight, more preferably 10 to 150 parts by weight
When 100 parts by weight is added, rigidity, heat resistance, tensile strength, etc. are improved. In addition, the surface of the inorganic filler may be coated with a silane compound such as vinyltriethoxysilane, 2
It may be treated with -aminopropyltriethoxysilane, 2-glycidoxypropyltrimethoxysilane, or the like. Among these, fibrous materials, especially glass fibers, are preferred because they have excellent reinforcing effects. [Effects of the Invention] The propylene polymer composition of the present invention is characterized by using the aforementioned specific modified propylene/α-olefin random copolymer and specific ethylene/α-olefin random copolymer as a dispersant for polyamide in the propylene polymer.
By using the olefin random copolymer in combination, the polyamide can be well dispersed in the composition, and the polyamide can fully exhibit the effect of modifying the propylene polymer, while almost impairing the rigidity of the composition. However, the impact resistance has been significantly improved. The propylene polymer composition of the present invention has extremely superior impact resistance and good appearance compared to conventionally known polypropylene/polyamide compositions, so it can improve rigidity and heat resistance for automobile parts, electrical appliances, mechanical parts, industrial parts, etc. Suitable for applications that require both strength and impact resistance. [Examples] Next, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples as long as the gist thereof is not exceeded. The measurement method used in the examples of the present invention is as follows. Tensile properties ASTM D 638 Bending properties ASTM D 790 Izot impact strength ASTM D 256 Notched heat distortion temperature ASTM D 648 Load 4.6 Kg/ ^cm2 Gloss ASTM D 523 <Production example of modified propylene/α-olefin random copolymer> Propylene content 60 mol%, crystallinity 0%,
MIT0.96, boiling n-heptane insoluble content: 0.1%, boiling methyl acetate soluble content 0.8% and [η] = 4.5 dl/g,
100 parts by weight of propylene/ethylene random copolymer, 1.0 parts by weight of acetone and α,α′-bis-tert-
Butylperoxy-diisopropylbenzene 0.01
A mixture of 0.3 parts by weight of maleic anhydride and 0.3 parts by weight of maleic anhydride was mixed dropwise with a Henschel mixer, and then 40 mm
A maleic anhydride-grafted propylene/ethylene random copolymer (modified
PEC-1) was obtained. <Production example of modified ethylene/α-olefin random copolymer> Ethylene content 80 mol%, crystallinity 5%,
100 parts by weight of ethylene-propylene random copolymer (hereinafter referred to as EPC-1) with an MFR of 1.2 g/10 min, 1.0 parts by weight of acetone, 0.02 parts by weight of α,α-bis-tert-butylperoxy-diisopropylbenzene, and maleic anhydride. A mixed solution consisting of 1.0 parts by weight was mixed dropwise in a Henschel mixer, and then granulated at 240°C in a 40 mmφ extruder to obtain a crystallinity of 3%.
Maleic anhydride grafted ethylene/propylene random copolymer (modified EPC-
1) was obtained. Example 1 Polypropylene with MFR of 4.0g/10min (hereinafter
PP-1) 42 parts by weight, MFR16g/10min,
Relative viscosity ηr measured at 25°C in a 1% solution of 3 parts by weight of polypropylene (hereinafter referred to as modified PP) in 98% sulfuric acid with a maleic anhydride grafting amount of 3.8% by weight
2.8 nylon 6 (hereinafter referred to as NY6-1) 55 parts by weight, modified PEC-1 10 parts by weight, and modified EPC-1
10 parts by weight were drive blended in a tumbler blender and granulated at 240°C in a 40 mmφ extruder to produce pellets. After drying this pellet, 260℃
A test piece for measuring physical properties was prepared by injection molding, and the physical properties were evaluated using the measurement method described above. Comparative Example 1 In Example 1, instead of 10 parts by weight of modified PEC-1 and 10 parts by weight of modified EPC-1, modified
The same procedure as in Example 1 was conducted except that 20 parts by weight of PEC-1 was used. Comparative Example 2 The same procedure as Comparative Example 1 was conducted except that 20 parts by weight of modified EPC-1 was used instead of 20 parts by weight of modified PEC-1. Comparative Example 3 In Example 1, modified PEC-1 and modified
The same procedure as in Example 1 was conducted except that a composition containing no EPC-1 was used. The results of Example 1 and Comparative Examples 1 to 3 are shown in Table 1. Example 2 In Example 1, modified PEC-1 and modified EPC
The same procedure as in Example 1 was carried out except that the amounts of -1 were changed to 20 parts by weight and 20 parts by weight, respectively. The results are also listed in Table 1.

【table】

[Table] Example 3 48 parts by weight of PP-1, 2 parts by weight of modified PP and NY6
-1, 20 parts by weight of modified PEC-1, and 20 parts by weight of modified EPC-1 were dry blended in a tumbler blender, and the physical properties were evaluated in the same manner as in Example 1. The results are shown in Table 2. Comparative Example 4 In Example 3, modified PEC-1 and modified EPC
The same procedure as in Example 3 was conducted except that 40 parts by weight of modified PEC-1 was used instead of PEC-1. Comparative Example 5 In Example 3, modified PEC-1 and modified EPC
Example 3 was carried out in the same manner as in Example 3, except that 40 parts by weight of modified EPC-1 was used instead of using EPC-1 in combination with EPC-1. The results of Comparative Examples 4 and 5 are also listed in Table 2.

[Table] Example 4 60 parts by weight of polypropylene with MPF of 1.0 (hereinafter referred to as PP-2), 5 parts by weight of modified PP, NY6-1 35
parts by weight, 10 parts by weight of modified PEC-1, and modified
10 parts by weight of EPC-1 was dry blended in a tumbler, and the physical properties were evaluated in the same manner as in Example 1. The results are shown in Table 3. Comparative Example 6 In Example 4, instead of 10 parts by weight of modified PEC-1 and 10 parts by weight of modified EPC-1, modified
The same procedure as in Example 4 was carried out except that 20 parts by weight of PEC-1 was used. Comparative Example 7 In Example 4, instead of 10 parts by weight of modified PEC-1 and 10 parts by weight of modified EPC-1, modified
The same procedure as in Example 4 was carried out except that 20 parts by weight of EPC-1 was used. The results of Comparative Examples 6 and 7 are shown in Table 4.

[Table] Example 5 75 parts by weight of PP-2, 5 parts by weight of modified PP, ηr is 2.7
20 parts by weight of nylon 66 (hereinafter referred to as NY66-1),
Modified PEC-1 10 parts by weight and modified EPC-1 10
A composition consisting of parts by weight was evaluated in the same manner as in Example 1. The results are shown in Table 4. Comparative Example 8 In Example 5, modified PEC was used instead of 10 parts by weight of modified PEC-1 and 10 parts by weight of modified EPC-1.
The same procedure as in Example 5 was carried out except that 20 parts by weight of -1 was used. The results are shown in Table 4.

[Table] Example 6 Polypropylene with MFR of 12g/10min (hereinafter
40 parts by weight of modified PP-3), 5 parts by weight of modified PP, 55 parts by weight of nylon 6 with ηr of 2.2 (hereinafter referred to as NY6-2), 7 parts by weight of modified PEC-1, modified EPC-1
7 parts by weight and 40 parts by weight of glass fiber (fiber length 3 mm, hereinafter referred to as GF) were mixed in a tumbler blender and granulated in a 40 mmφ extruder to produce pellets, and evaluated in the same manner as in Example 1. did.
The results are shown in Table 5. Comparative Example 9 In Example 6, 7 parts by weight of modified PEC-1 and 7 parts by weight of modified EPC-1 were replaced with modified PEC-1.
The same procedure as in Example 6 was carried out except that the amount was changed to 14 parts by weight. The results are shown in Table 5. Comparative Example 10 The same procedure as Comparative Example 9 was carried out except that 14 parts by weight of modified PEC-1 was changed to 14 parts by weight of modified EPC-1. The results are shown in Table 5.

【table】

Claims (1)

[Claims] 1 Based on 95 to 5 parts by weight of propylene polymer (A), 5 to 95 parts by weight of polyamide (B), and (A) + (B) = 100 parts by weight, X-ray crystallinity of 0 to 30% and propylene Modified propylene/α obtained by grafting 0.01 to 5 parts by weight of a graft monomer selected from unsaturated carboxylic acids or derivatives thereof to 100 parts by weight of a propylene/α-olefin random copolymer (C) containing 50 to 70 mol%. - Olefin random copolymer (D) 1 to 99 parts by weight, X-ray crystallinity 0 to 50%, and ethylene content 55
or 95 mol% of ethylene/α-olefin random copolymer (E) to 100 parts by weight of a graft monomer selected from unsaturated carboxylic acids or derivatives thereof.
0.01 to 5 parts by weight of a graft-modified modified ethylene/α-olefin random copolymer (F) 99 to 1 part by weight [however, (D) + (F) = 2 to 100 parts by weight] Propylene polymer composition.