JP2779673B2 - Crystalline polyolefin composition - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a crystalline polyolefin composition from which a molded article having excellent rigidity and heat-resistant rigidity can be obtained. More specifically, the present invention relates to a crystalline polyolefin composition obtained by mixing a specific amount of a sodium aromatic carboxylate and a specific metal lactate with a crystalline polyolefin to obtain a molded article excellent in rigidity and heat resistance rigidity.

[Prior Art] Generally, crystalline polyolefins are relatively inexpensive and have excellent mechanical properties, so that injection molded products, hollow molded products,
It is used in the production of various molded products such as films, sheets, and fibers. However, depending on various specific applications, the mechanical properties may not be sufficient, and there is a problem that expansion of the specific applications is limited. In particular, rigid surfaces such as rigidity and heat-resistant rigidity (hereinafter, rigid surface means rigidity and heat-resistant rigidity) are inferior to polyesters such as polystyrene, ABS resin, polyethylene terephthalate, and polybutylene terephthalate. There is a drawback that the use of crystalline polyolefin is limited. For this reason, various nucleating agents have conventionally been used for the purpose of improving the rigidity of the crystalline polyolefin. Above all, metal salts of aromatic carboxylic acids are widely used because of their relatively excellent effect of improving rigidity.

Further, there has been proposed an olefin polymer composition having improved optical properties obtained by blending a metal salt of a fatty acid and a metal salt of a carboxylic acid having an aromatic group with the olefin polymer (JP-A-47-34542). No.).

[Problems to be Solved by the Invention] However, sodium salts as the metal salts of aromatic carboxylic acids are excellent in the effect of improving rigidity, but are still sufficiently satisfactory when used in applications requiring high rigidity. Not something you can do. In addition, JP-A-47-3454
No. 2 discloses ricinol and 12 as metal salts of fatty acids.
-Although metal salts of hydroxy higher fatty acids such as oxystearic acid are described, metal lactate is not described at all, and sodium lactate, magnesium lactate or calcium lactate is used in combination with sodium aromatic carboxylate as metal salts of fatty acids. There is no description suggesting that the improvement in the rigidity of a molded article obtained from the olefin polymer composition by the above-mentioned process.

The present inventors have intensively studied to obtain a crystalline polyolefin composition which gives a molded article having the above-mentioned problem relating to the crystalline polyolefin composition, that is, an improved rigid surface.

As a result, the present inventor has set forth a crystalline polyolefin composition comprising a specific amount of a specific sodium aromatic carboxylate and a specific metal lactic acid salt mixed with a specific amount of a crystalline polyolefin. The present invention was completed based on this finding.

As is apparent from the above description, an object of the present invention is to provide a crystalline polyolefin composition in which the molded article has an improved rigidity surface.

[Means for Solving the Problems] The present invention has the following configurations.

(1) For each 100 parts by weight of the crystalline polyolefin, 0.01 to 1 part by weight of each of sodium aromatic monocarboxylate (hereinafter, referred to as compound A) and the following compound (hereinafter, referred to as compound B) is blended. A crystalline polyolefin composition.

Metal lactate (where metal represents sodium, magnesium, or calcium) (2) Compound A or sodium aromatic polycarboxylate (hereinafter, referred to as “a”) per 100 parts by weight of the crystalline polyolefin.
It is called Compound C. ), A compound B and an aliphatic amine each in an amount of 0.01 to 1 part by weight.

(3) The crystalline polyolefin composition according to the above (1) or (2), further comprising 0.01 to 25 parts by weight of an inorganic filler based on 100 parts by weight of the crystalline polyolefin.

The crystalline polyolefin used in the present invention is ethylene,
Propylene, butene-1, pentene-1, 4-methyl-
Α- such as pentene-1, hexene-1, and octene-1
Crystalline homopolymer of olefin, two or more of these α-
Olefin crystalline or low crystalline random copolymer or crystalline block copolymer, copolymer of the above-mentioned α-olefin and vinyl acetate or acrylate, saponified product of the copolymer, these α-olefins And a copolymer of an unsaturated silane compound and a copolymer of the α-olefin and an unsaturated carboxylic acid or an anhydride thereof,
A reaction product of the copolymer and a metal ion compound, a crystalline homopolymer of the above-mentioned α-olefin, a crystalline or low-crystalline random copolymer or a crystalline block copolymer, and an unsaturated carboxylic acid or Examples include a modified polyolefin modified with a derivative, a crystalline homopolymer of the above-mentioned α-olefin, a crystalline or low-crystalline random copolymer, or a silane-modified polyolefin obtained by modifying a crystalline block copolymer with an unsaturated silane compound. These crystalline polyolefins can be used alone, or two or more crystalline polyolefins can be used in combination. In addition, various synthetic rubbers (for example, amorphous ethylene-propylene random copolymer, amorphous ethylene-propylene-nonconjugated diene terpolymer, polybutadiene, polyisoprene,
Polychloroprene, chlorinated polyethylene, chlorinated polypropylene, fluoro rubber, styrene-butadiene rubber,
Acrylonitrile-butadiene rubber, styrene-butadiene-styrene block copolymer, styrene-isoprene-styrene block copolymer, styrene-ethylene-butylene-styrene block copolymer, styrene-propylene-butylene-styrene block copolymer, etc. )
Or a thermoplastic synthetic resin (for example, polystyrene, styrene-acrylonitrile copolymer, acrylonitrile-
Butadiene-styrene copolymer, polyamide, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyvinyl chloride, fluororesin, etc.) can also be used as a mixture. A crystalline propylene homopolymer, a crystalline propylene copolymer containing at least 70% by weight of a propylene component, and a crystalline ethylene-propylene random copolymer, a crystalline propylene-butene-1 random copolymer, and a crystalline propylene copolymer. Ethylene-propylene-butene-13 copolymer, crystalline propylene-hexene-butene-13 copolymer, and a mixture of two or more thereof are particularly preferably used.

Compound A used in the present invention includes sodium benzoate, sodium o-toluate, sodium m-toluate, sodium p-toluate, sodium pt-butyl benzoate, sodium pt-amyl benzoate, Sodium t-octylbenzoate, sodium o-methoxybenzoate, sodium m-methoxybenzoate, sodium anisate, sodium naphthoate, sodium salicylate, sodium acetylsalicylate and 3,5-di-t-butyl-4-hydroxy Examples thereof include sodium benzoate and the like, and particularly preferred are sodium benzoate and sodium pt-butyl benzoate. These compounds A may be used alone, or two or more compounds A may be used in combination. The compounding ratio of the compound A is
It is 0.01 to 1 part by weight, preferably 0.05 to 0.5 part by weight, based on 100 parts by weight of the crystalline polyolefin. If the amount is less than 0.01 part by weight, the effect of improving the rigidity is not sufficiently exhibited, and the amount may be more than 1 part by weight. It is uneconomical.

Compound B used in the present invention is sodium lactate, magnesium lactate and calcium lactate. These compounds B may be used alone, or two or more compounds B may be used in combination. The compounding ratio of the compound B is 0.01 to 1 with respect to 100 parts by weight of the crystalline polyolefin.
Parts by weight, preferably 0.05 to 0.5 parts by weight. If the amount is less than 0.01 part by weight, the effect of improving the rigidity is not sufficiently exhibited, and the amount may be more than 1 part by weight. It is uneconomical.

Examples of the compound C used in the present invention include sodium phthalate, sodium isophthalate, sodium terephthalate, sodium trimellitate, sodium pyromellitate and sodium melitate. The use of these compounds C alone is a matter of course.
Can also be used in combination. The compounding ratio of the compound C is 0.01 to 1 part by weight, preferably 0.05 to 0.5 part by weight, based on 100 parts by weight of the crystalline polyolefin. If the amount is less than 0.01 part by weight, the effect of improving the rigidity is not sufficiently exhibited, and the amount may be more than 1 part by weight. It is uneconomical.

In the composition of the present invention, the combined use of an aliphatic amine synergistically exerts the effect of improving the rigidity, so that the combined use is preferred. As the aliphatic amine, octylamine, laurylamine, myristylamine, palmitylamine, stearylamine, oleylamine,
Cocoamine, tallowamine, soyamine, N, N-dicocoamine, N, N-ditarowamine, N, N-disoiamine, N
-Lauryl-N, N-dimethylamine, N-myristyl-
N, N-dimethylamine, N-palmityl-N, N-dimethylamine, N-stearyl-N, N-dimethylamine, N-
Coco-N, N-dimethylamine, N-tallow-N, N-dimethylamine, N-soy-N, N-dimethylamine, N-methyl-N, N-ditallowamine, N-methyl-N, N-dicocoamine , N-oleyl-1,3-diaminopropane, N-tallow-1,3-diaminopropane, hexamethylenediamine, N-lauryl-N, N, N-trimethylammonium chloride, N-palmityl-N, N, N -Trimethylammonium chloride, N-stearyl-N, N, N-trimethylammonium chloride, N-docosyl-N, N, N-trimethylammonium chloride, N-coco-N, N, N-
Trimethylammonium chloride, N-tallow-N, N,
N-trimethylammonium chloride, N-soy-N,
N, N-trimethylammonium chloride, N, N, N-triethyl-N-benzylammonium chloride, N-lauryl-N, N-dimethyl-N-benzylammonium chloride, N-myristyl-N, N-dimethyl-N- Benzyl ammonium chloride, N-stearyl-N, N-
Dimethyl-N-benzylammonium chloride, N-
Coco-N, N-dimethyl-N-benzylammonium chloride, N, N-dioleyl-N, N-dimethylammonium chloride, N, N-dicoco-N, N-dimethylammonium chloride, N, N-ditarow-N, N-dimethylammonium chloride, N, N-disoiy-N, N-dimethylammonium chloride, N, N-bis (2-hydroxyethyl)-
N-lauryl-N-methylammonium chloride, N,
N-bis (2-hydroxyethyl) -N-stearyl-
N-methylammonium chloride, N, N-bis (2-
(Hydroxyethyl) -N-oleyl-N-methylammonium chloride, N, N-bis (2-hydroxyethyl) -N-coco-N-methylammonium chloride,
N, N-bis (polyoxyethylene) -N-lauryl-N
-Methylammonium chloride, N, N-bis (polyoxyethylene) -N-stearyl-N-methylammonium chloride, N, N-bis (polyoxyethylene)-
N-oleyl-N-methylammonium chloride, N,
N-bis (polyoxyethylene) -N-coco-N-methylammonium chloride, N, N-bis (2-hydroxyethyl) laurylaminobetaine, N, N-bis (2-
Hydroxyethyl) tridecylaminobetaine, N, N-
Bis (2-hydroxyethyl) myristylaminobetaine, N, N-bis (2-hydroxyethyl) pentadecylaminobetaine, N, N-bis (2-hydroxyethyl)
Palmitylaminobetaine, N, N-bis (2-hydroxyethyl) stearylaminobetaine, N, N-bis (2
-Hydroxyethyl) oleylaminobetaine, N, N-
Bis (2-hydroxyethyl) docosylaminobetaine, N, N-bis (2-hydroxyethyl) octacosylaminobetaine, N, N-bis (2-hydroxyethyl)
Cocoaminobetaine, N, N-bis (2-hydroxyethyl) tallowaminobetaine, hexamethylenetetramine, triethanolamine, triisopropanolamine, N- (2-hydroxyethyl) laurylamine, N
-(2-hydroxyethyl) tridecylamine, N-
(2-hydroxyethyl) myristylamine, N- (2
-Hydroxyethyl) pentadecylamine, N- (2-
(Hydroxyethyl) palmitylamine, N- (2-hydroxyethyl) stearylamine, N- (2-hydroxyethyl) oleylamine, N- (2-hydroxyethyl) docosylamine, N- (2-hydroxyethyl) octacosylamine, N- (2-hydroxyethyl) cocoamine, N- (2-hydroxyethyl) tallowamine,
N-methyl-N- (2-hydroxyethyl) laurylamine, N-methyl-N- (2-hydroxyethyl) tridecylamine, N-methyl-N- (2-hydroxyethyl) myristylamine, N-methyl- N- (2-hydroxyethyl) pentadecylamine, N-methyl-N-
(2-hydroxyethyl) palmitylamine, N-methyl-N- (2-hydroxyethyl) stearylamine,
N-methyl-N- (2-hydroxyethyl) oleylamine, N-methyl-N- (2-hydroxyethyl) docosylamine, N-methyl-N- (2-hydroxyethyl) octacosylamine, N-methyl-N- (2-hydroxyethyl) cocoamine, N-methyl-N- (2-hydroxyethyl) tallowamine, N, N-bis (2-hydroxyethyl) laurylamine, N, N-bis (2-hydroxyethyl) tridecylamine , N, N-bis (2-hydroxyethyl) myristylamine, N, N-bis (2-
(Hydroxyethyl) pentadecylamine, N, N-bis (2-hydroxyethyl) palmitylamine, N, N-bis (2-hydroxyethyl) stearylamine, N, N-
Bis (2-hydroxyethyl) oleylamine, N, N-
Bis (2-hydroxyethyl) docosylamine, N, N-
Bis (2-hydroxyethyl) octacosylamine, N,
N, N- such as N-bis (2-hydroxyethyl) cocoamine and N, N-bis (2-hydroxyethyl) tallowamine
Bis (2-hydroxyethyl) aliphatic amine, the N, N-
Mono or diesters of bis (2-hydroxyethyl) aliphatic amines with fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, polyoxyethylene lauryl amino ether, polyoxyethylene stearyl amino ether, polyoxy Ethylene oleyl amino ether, polyoxyethylene coco amino ether, polyoxyethylene tallow amino ether, N, N, N ', N'-tetra (2-hydroxyethyl)-
1,3-diaminopropane, N, N, N ', N'-tetra (2-hydroxyethyl) -1,6-diaminohexane, N-lauryl-N, N', N'-tris (2-hydroxyethyl )-
1,3-diaminopropane, N-stearyl-N, N ', N'-
Tris (2-hydroxyethyl) -1,3-diaminopropane, N-coco-N, N ', N'-tris (2-hydroxyethyl) -1,3-diaminopropane, N-tallow-N,
N ', N'-tris (2-hydroxyethyl) -1,3-diaminopropane, N, N-dicoco-N', N'-bis (2-hydroxyethyl) -1,3-diaminopropane, N, N-ditarow-N ', N'-bis (2-hydroxyethyl) -1,3
Diaminopropane, N-coco-N, N ', N'-tris (2-hydroxyethyl) -1,6-diaminohexane,
N-tallow-N, N ', N'-tris (2-hydroxyethyl) -1,6-diaminohexane, N, N-dicoco-N', N '
-Bis (2-hydroxyethyl) -1,6-diaminohexane and N, N-ditarow-N ', N'-bis (2-hydroxyethyl) -1,6-diaminohexane; N-bis (2-hydroxyethyl) aliphatic amines are preferred. Of course, these aliphatic amines can be used alone, and two or more aliphatic amines can be used in combination. The proportion of the aliphatic amine is 0.01 to 1 part by weight, preferably 0.0 to 1 part by weight, per 100 parts by weight of the crystalline polyolefin.
5 to 0.5 parts by weight.

In the composition of the present invention, the combined use of an inorganic filler synergistically exhibits the effect of improving the rigidity, and therefore it is preferable to use the combined use. As inorganic fillers, talc, mica, clay, wollastonite, zeolite,
Kaolin, bentonite, perlite, diatomaceous earth, asbestos, calcium carbonate, aluminum hydroxide, magnesium hydroxide, silicon dioxide, titanium dioxide, zinc oxide, magnesium oxide, zinc sulfide, barium sulfate, calcium silicate, aluminum silicate, glass fiber , Potassium titanate, carbon fiber, carbon black, graphite, metal fiber, etc., and surface treatment agents such as coupling agents (for example, silane, titanate, boron, aluminate, zircoaluminate) Examples of the inorganic filler include talc. Of course, these inorganic fillers can be used alone, and two or more inorganic fillers can be used in combination. The mixing ratio of the inorganic filler is 0.01 to 25 parts by weight, preferably 0.1 to 20 parts by weight, and more preferably 1 to 15 parts by weight based on 100 parts by weight of the crystalline polyolefin.

In the composition of the present invention, various additives usually added to the crystalline polyolefin such as phenol-based, thioether-based, phosphorus-based antioxidants, light stabilizers, heavy metal deactivators, and clarifiers , Nucleating agent (however, compound A
And compound C)), a lubricant, an antistatic agent, an antifogging agent,
Anti-blocking agent, no-drop agent, flame retardant, flame retardant auxiliary, pigment, radical generator such as peroxide, halogen scavenger (excluding compound B), dispersant or neutralizing agent such as metal soaps Alternatively, an organic filler (for example, wood flour, pulp, waste paper, synthetic fiber, natural fiber, etc.) can be used in combination as long as the object of the present invention is not impaired.

The composition of the present invention is prepared by adding a predetermined amount of each of the compound A or the compound C and the compound B to the crystalline polyolefin and the above-mentioned various additives which are usually added to the crystalline polyolefin in a usual mixing apparatus such as a Henschel mixer (trade name). , Super mixer, ribbon blender,
Mixing using a Banbury mixer, etc., and melt-kneading pelletizing at a melt-kneading temperature of 150 ° C to 300 ° C, preferably 180 ° C to 270 ° C, using a normal single-screw extruder, twin-screw extruder, Brabender or roll, or the like. Can be obtained by The obtained composition is used for production of a target molded article by various molding methods such as an injection molding method, an extrusion molding method, and a blow molding method.

[Action] In the present invention, it is generally known that compound A acts as a nucleating agent to improve the rigidity of the crystalline polyolefin, and compound B acts as a halogen scavenger. However, in the present invention, the action mechanism itself of the combined use of compound A and compound B is not clear, but is presumed to be due to the following action mechanism. That is, a coordination bond or an ionic bond is formed between the metal ion of the compound A and the carbonyl group of the compound B, and between the carbonyl group of the compound A and the metal ion of the compound B. It is considered that by forming a hydrogen bond with the hydroxyl group of the compound (A), the nucleating action inherent to the compound A is synergistically improved and acts on the improvement of the rigid surface.

EXAMPLES Hereinafter, the present invention will be described specifically with reference to Examples and Comparative Examples, but the present invention is not limited thereto.

The evaluation method used in the examples and comparative examples was based on the following method.

1) Rigidity: Evaluated by a bending test. In other words, a test piece having a length of 100 mm, a width of 10 mm, and a thickness of 4 mm was prepared by injection molding using the obtained pellets, and the flexural modulus was measured using the test piece (based on JIS K 7203). Was evaluated. A highly rigid material is one having a large flexural modulus.

2) Heat resistance: Evaluated by a load deflection temperature test. That is, using the obtained pellets 130 mm in length, 13 mm in width,
A test piece having a thickness of 6.5 mm was prepared by an injection molding method, and the heat distortion temperature was measured using the test piece (based on JIS K 7207; 4.6 kg
f / cm ² load) to evaluate the heat resistance rigidity. The material having high heat resistance and rigidity means a material having a high heat deformation temperature.

Examples 1 to 10 and Comparative Examples 1 to 13 As a crystalline polyolefin, MFR (load at 230 ° C.)
2.16 kg of molten resin discharged for 10 minutes when added (6.0 g)
100 parts by weight of unstabilized powdered crystalline propylene homopolymer / 10 minutes, sodium benzoate or sodium pt-butyl benzoate as compound A, sodium lactate, magnesium lactate or calcium lactate as compound B and A predetermined amount of each of the other additives was added to a Henschel mixer (trade name) at the mixing ratio shown in Table 1 below, and the mixture was stirred and mixed for 3 minutes.
And melt-kneading at 200 ° C. with a single screw extruder to form pellets. In addition, as Comparative Examples 1 to 13, MFR was 6.0 g / 10 min of a non-stabilized powdery crystalline propylene homopolymer 100 parts by weight of each of the additives described in Table 1 below is blended with a predetermined amount, Pellets were obtained by melt-kneading according to Examples 1 to 10.

The test piece used for evaluation of rigidity and heat resistance rigidity was prepared by injection molding the obtained pellet at a resin temperature of 250 ° C and a mold temperature of 50 ° C.

The rigidity and the heat-resistant rigidity were evaluated by the test method using the obtained test pieces. The results are shown in Table 1.

Examples 11 to 20, Comparative Examples 14 to 26 As a crystalline polyolefin, 100 parts by weight of an unstabilized powdery crystalline ethylene-propylene block copolymer (ethylene content 8.5% by weight) with an MFR of 4.0 g / 10 minutes , A predetermined amount of sodium pt-octyl benzoate or sodium anisate as the compound A, a predetermined amount of sodium lactate, magnesium lactate or calcium lactate as the compound B, and other additives in the proportions shown in Table 2 below. The mixture was placed in a Henschel mixer (trade name), stirred and mixed for 3 minutes, and then melt-kneaded at 200 ° C. using a 40 mm diameter single screw extruder to form pellets. Comparative Examples 14 to 26
Each of the additives listed in Table 2 below was added to 100 parts by weight of an unstabilized powdery crystalline ethylene-propylene block copolymer (ethylene content 8.5% by weight) having an MFR of 4.0 g / 10 minutes. A fixed amount was blended and melt-kneaded according to Examples 11 to 20 to obtain pellets.

The test piece used for evaluation of rigidity and heat resistance rigidity was prepared by injection molding the obtained pellet at a resin temperature of 250 ° C and a mold temperature of 50 ° C.

The rigidity and the heat-resistant rigidity were evaluated by the test method using the obtained test pieces. Table 2 shows the results.

Examples 21 to 30, Comparative Examples 27 to 39 To 100 parts by weight of an unstabilized powdery crystalline propylene homopolymer having an MFR of 8.0 g / 10 min as a crystalline polyolefin, sodium salicylate or 3,
A predetermined amount of sodium 5-di-t-butyl-4-hydroxybenzoate, sodium lactate, magnesium lactate or calcium lactate as compound B, and other additives in a Henschel mixer (compounding ratio shown in Table 3 below). After mixing and stirring for 3 minutes, the mixture was melt-kneaded at 200 ° C. with a 40 mm diameter single screw extruder to form pellets. Further, as Comparative Examples 27 to 39, the MFR was 8.0 g / 10 min, which was not stabilized and was in the form of a powdery crystalline propylene homopolymer.
A prescribed amount of each of the additives described in Table 3 described below was blended with 100 parts by weight, and the mixture was melt-kneaded according to Examples 21 to 30 to obtain pellets.

The test piece used for evaluation of rigidity and heat resistance rigidity was prepared by injection molding the obtained pellet at a resin temperature of 250 ° C and a mold temperature of 50 ° C.

The rigidity and the heat-resistant rigidity were evaluated by the test method using the obtained test pieces. The results are shown in Table 3.

Examples 31-40, Comparative Examples 40-52 70% by weight of an unstabilized powdery crystalline ethylene-propylene random copolymer (ethylene content 2.5% by weight) as a crystalline polyolefin with an MFR of 7.0 g / 10 minutes and M
I (Discharge rate of molten resin for 10 minutes under a load of 2.16 kg at 190 ° C) 10 g / 10 minutes Unstabilized powdered Ziegler-Natta high-density ethylene homopolymer 30% by weight To 100 parts by weight, a predetermined amount of sodium terephthalate or sodium pyromellitate as the compound C, sodium lactate, magnesium lactate or calcium lactate as the compound B, and other additives, respectively, in a blending ratio shown in Table 4 below were added to a Henschel mixer. (Trade name), stir and mix for 3 minutes, then caliber 40mm
And melt-kneading at 200 ° C. with a single screw extruder to form pellets. As Comparative Examples 40 to 52, an unstabilized powdery crystalline ethylene-propylene random copolymer having an MFR of 7.0 g / 10 min (ethylene content of 2.5 wt%) 70 wt% and an MI of 10 g / 10 min A predetermined amount of each of the additives shown in Table 4 described below was blended into a total of 100 parts by weight of 30% by weight of an unstabilized powdery Ziegler-Natta type high-density ethylene homopolymer. Pellets were obtained by a melt-kneading treatment according to.

The test piece used for evaluation of rigidity and heat resistance rigidity was prepared by injection molding the obtained pellet at a resin temperature of 250 ° C and a mold temperature of 50 ° C.

The rigidity and the heat-resistant rigidity were evaluated by the test method using the obtained test pieces. The results are shown in Table 4.

The compounds and additives according to the present invention shown in Tables 1 to 4 are as follows.

Compound A [I]: Sodium benzoate Compound A [II]: Sodium pt-butyl benzoate Compound A [III]: Sodium pt-octyl benzoate Compound A [IV]: Sodium anisate Compound A [V ]: Sodium salicylate Compound A [VI]: Sodium 3,5-di-t-butyl-4-hydroxybenzoate Compound C [I]: Sodium terephthalate Compound C [II]: Sodium pyromellitate Compound B [I]: Sodium lactate Compound B [II]: Magnesium lactate Compound B [III]: Calcium lactate Aliphatic amine 1: Laurylamine Aliphatic amine 2: N, N-dicocoamine Aliphatic amine 3: N-stearyl-N, N-dimethylamine Aliphatic amine 4: Hexamethylenediamine Aliphatic amine 5: N-tallow-1,3-diaminopropane Aliphatic amine 6: Hexamethylenetetramine Aliphatic amine Min 7: N-docosyl-N, N, N-trimethylammonium chloride Aliphatic amine 8: N, N, N-triethyl-N-benzylammonium chloride Aliphatic amine 9: N, N-bis (2-hydroxyethyl) −
N-oleyl-N-methylammonium chloride aliphatic amine 10: N, N-bis (2-hydroxyethyl) stearylaminobetaine aliphatic amine 11: triisopropanolamine aliphatic amine 12: N, N-bis (2-hydroxy Ethyl) cocoamine aliphatic amine 13: N, N-bis (2-hydroxyethyl) tallowamine aliphatic amine 14: octadecanoic acid 2-[(2-hydroxyethyl) octadecylamino] ethyl ester aliphatic amine 15: (octadecyl imino) Diethylene distearate aliphatic amine 16: polyoxyethylene lauryl Aliphatic amine 17: polyoxyethylene stearyl Aliphatic amine 18: N, N, N ', N'-tetra (2-hydroxyethyl) -1,3-diaminopropane Aliphatic amine 19: N-tallow-N, N', N'-tris (2-
(Hydroxyethyl) -1,3-diaminopropane aliphatic amine 20: N, N-dicoco-N ', N'-bis (2-hydroxyethyl) -1,6-diaminohexane inorganic filler 1: talc inorganic filler 2: Calcium carbonate inorganic filler 3: barium sulfate phenolic antioxidant 1: 2,6-di-t-butyl-p-
Cresol phenolic antioxidant 2: tetrakis [methylene-3-
(3 ', 5'-di-t-butyl-4'-hydroxyphenyl) propionate] methane phenolic antioxidant 3: 1,3,5-trimethyl-2,4,6-
Tris (3,5-di-t-butyl-4-hydroxybenzyl) benzene phenolic antioxidant 4: 1,3,5-tris (3,5-di-t
-Butyl-4-hydroxybenzyl) isocyanurate phenolic antioxidant 5: 3,9-bis [1,1-dimethyl-
2- {β- (3-t-butyl-4-hydroxy-5-methylphenyl) propionyloxy} ethyl] -2,4,8,
10-tetraoxaspiro [5.5] undecane thioether antioxidant 1: dimyristyl thiodipropionate thioether antioxidant 2: distearyl thiodipropionate thioether antioxidant 3: pentaerythritol-tetrakis (3-lauryl) Thiopropionate) Phosphorus antioxidant 1: bis (2,4-di-t-butylphenyl) -pentaerythritol-diphosphite Phosphorus antioxidant 2: bis (2,6-di-t-butyl) -4-
Methylphenyl) -pentaerythritol-diphosphite phosphorus antioxidant 3: tetrakis (2,4-di-t-butylphenyl) -4,4'-biphenylene-diphosphonite phosphorus antioxidant 4: Tris (2,4-di-t-butylphenyl) phosphanite Aliphatic carboxylic acid metal salt 1: Sodium stearate Aliphatic carboxylic acid metal salt 2: Magnesium stearate Aliphatic carboxylic acid metal salt 3: Calcium stearate Aliphatic Carboxylic acid metal salt 4: Calcium 12-hydroxyoctadecanoate Aliphatic carboxylic acid metal salt 5: 2-Stearoyl calcium lactate Hydroxy acid compound 1: Lactic acid hydroxy acid compound 2: Lithium lactate Hydroxy acid compound 3: Sodium malate Hydroxy acid compound 4 : Sodium tartrate hydroxy acid compound 5: Calcium citrate The examples and comparative examples described in Table 1 are cases where a crystalline propylene homopolymer is used as the crystalline polyolefin. As can be seen from Table 1, Examples 1 to 10 are obtained by blending Compound A and Compound B with a crystalline propylene homopolymer, and Examples 1 to 10 and Comparative Example 1 (Compound A and Compound B were blended) In comparison with the examples, it can be seen that Examples 1 to 10 are remarkably excellent in rigidity. Comparative Example 2 with Compound A and without Compound B
Compared with Examples 1 to 10, the rigidity of Comparative Example 2 is considerably improved as compared with Comparative Example 1, but is still insufficient. In addition, comparing Comparative Example 3 in which Compound B was blended and Compound A was not blended with Examples 1 to 10, Comparative Example 3
Although the stiffness surface is improved to some extent as compared with Comparative Example 1, it is still insufficient. Further, comparison is made between Comparative Examples 4 to 13 in which aliphatic carboxylic acid metal salts 1 to 5 or hydroxy acid compounds 1 to 5 other than compound B are blended, and Examples 1 to 10 in place of compound B in Examples 1 to 10. And Comparative Examples 4 to
The rigid surface of No. 9 is considerably lower than that of Comparative Example 2 due to the blending of the aliphatic carboxylic acid metal salts 1 to 5 or the hydroxy acid compound 1, as is apparent from comparison with Comparative Example 2.
The rigidity of Comparative Examples 10 to 13 is equivalent to or slightly improved compared to Comparative Example 2, but is still not sufficient. Even if Compound A is used in combination with hydroxy acid compounds 2 to 5 other than Compound B, the rigidity of Comparative Examples 10 to 13 is low. Is hardly improved.
Therefore, compound A and compound B according to the present invention
It is clear that the comparative examples that do not simultaneously satisfy the components do not exhibit the effects of the present invention. In other words, it can be said that the rigid surface obtained in the present invention is a unique effect that can be seen only when compound A and compound B are blended with the crystalline polyolefin. In addition, in the compositions of Examples 1 to 5, in Examples 6 to 10 in which various aliphatic amines were used in combination, the effects of improving the excellent rigidity of Compound A and Compound B were inhibited as compared with Examples 1 to 5. No significant synergistic effect due to the combined use of the aliphatic amine is found.

Tables 2 to 4 show, as crystalline polyolefins, crystalline ethylene-propylene block copolymers, crystalline propylene homopolymers or crystalline ethylene-propylene random copolymers, and Ziegler-Natta high-density ethylene homopolymers, respectively. Using a mixture of coalescence,
The same effects as described above were confirmed in these cases.

[Effect of the Invention] The composition of the present invention (1) when formed into a molded article, has a remarkably excellent rigidity. (2) Not only can the molded product be made thinner, which contributes to resource saving, but also the cooling rate during molding becomes faster, so that the molding speed per unit time can be increased, contributing to improved productivity. it can.

Claims (3)

(57) [Claims] 1. An aromatic sodium monocarboxylate (hereinafter referred to as Compound A) based on 100 parts by weight of a crystalline polyolefin.
That. ) And the following compounds (hereinafter, referred to as compound B), each in an amount of 0.01 to 1 part by weight. Metal lactate (where metal represents sodium, magnesium or calcium) 2. A compound comprising 0.01 to 1 part by weight of compound A or sodium aromatic polycarboxylate (hereinafter referred to as compound C), compound B and an aliphatic amine with 100 parts by weight of crystalline polyolefin. A crystalline polyolefin composition. 3. The crystalline form according to claim 1, further comprising 0.01 to 25 parts by weight of an inorganic filler based on 100 parts by weight of the crystalline polyolefin. Polyolefin composition.