Nuclear agent composition, olefin resin composition, molded article thereof, and method for producing olefin resin composition

Abstract

To provide a nucleating agent composition capable of imparting excellent crystallinity to an olefinic resin and obtaining a molded product having excellent mechanical characteristics and transparency, to provide an olefinic resin composition and a molded product thereof, and to provide a method for producing the olefinic resin composition.SOLUTION: The nucleating agent composition contains a nucleating agent and an auxiliary agent. The nucleating agent contains an aromatic phosphate metal salt represented by Formula (1) (where, R1 to R4 are alkyl groups having 1 to 6 C atoms; R5 is H or alkyl groups having 1 to 3 C atoms; n is 1 or 2; when n is 1, M is lithium or dihydroxyaluminum; and when n is 2, M is hydroxyaluminum), the auxiliary agent is at least one selected from the group consisting of water and polyol compounds, and the content of the auxiliary agent is 1 to 10,000 parts by mass with respect to 100 parts by mass of the nucleating agent.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a nucleating agent composition, an olefin resin composition (hereinafter also simply referred to as "resin composition"), a molded article thereof, and a method for producing an olefin resin composition. Specifically, the present invention relates to a nucleating agent composition, an olefin resin composition, a molded article thereof, and a method for producing an olefin resin composition that can impart excellent crystallinity to an olefin resin and obtain a molded article having excellent mechanical properties and transparency.

Background Art

[0002] Olefin resins such as polyethylene, polypropylene, and polybutene-1 are inexpensive and have excellent properties such as moldability, hygiene, heat resistance, chemical resistance, mechanical properties, and low specific gravity. Therefore, they are widely used in various molded articles such as building materials, automotive materials, household electrical appliance and electronic materials, fiber materials, packaging materials, agricultural materials, housing materials for household appliances, daily sundries, medical instruments, food containers, beverage containers, films, sheets, and structural parts. However, olefin resins have problems such as a slow crystallization rate after heat molding and a long molding cycle during processing.

[0003] Today, in order to improve the crystallinity of olefin resins, a nucleating agent is added to rapidly generate fine crystals. It is also known that adding a nucleating agent improves the transparency and mechanical properties of a molded article formed from an olefin resin.

[0004] As nucleating agents for improving the crystallinity of olefin resins, for example, metal carboxylates, metal salts of aromatic phosphoric esters, benzylidene sorbitol compounds, amide compounds, metal salts of rosin acids, talc, etc. are used. Among them, metal carboxylates such as sodium benzoate, aluminum 4-tert-butylbenzoate, sodium adipate and disodium bicyclo[2.2.1]heptane-2,3-dicarboxylate, sodium-2,2'-methylenebis(4,6-di-tert-butylphenyl) phosphate, lithium-2,2'-methylenebis(4,6-di-tert-butylphenyl) phosphate, aluminum hydroxybis[2,2'-methylenebis(4,6-di-tert-butylphenyl) phosphate] and other metal salts of aromatic phosphoric esters, benzylidene sorbitol compounds such as dibenzylidene sorbitol, bis(methylbenzylidene) sorbitol, bis(3,4-dimethylbenzylidene) sorbitol, bis(p-ethylbenzylidene) sorbitol, and bis(dimethylbenzylidene) sorbitol, amide compounds such as N,N',N''-tris[2-methylcyclohexyl]-1,2,3-propanetricarboxamide, N,N',N''-tricyclohexyl-1,3,5-benzenetricarboxamide, N,N'-dicyclohexylnaphthalenedicarboxamide, 1,3,5-tri(2,2-dimethylpropanamide)benzene, etc. are known.

[0005] In recent years, the diversification of applications has advanced, and further performance improvement of molded articles made of olefin resin compositions has been demanded. However, simply adding existing nucleating agents is insufficient, and new methods for improving the performance of molded articles made of olefin resin compositions are being studied.

[0006] For example, Patent Documents 1 and 2 describe a method for producing an olefin resin composition, in which an olefin monomer is polymerized in the presence of a nucleating agent to prepare an olefin resin composition containing the nucleating agent, and then water is blended into the olefin resin composition containing the nucleating agent.

Prior Art Documents

Patent Documents

[0007] Patent Document 1 Japanese Patent Application Laid-Open No. 2014-095046 Patent Document 2 Japanese Patent Application Laid-Open No. 2017-125116 SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] However, there was still room for further improvement in terms of mechanical properties or transparency in molded articles made of olefin resin compositions produced by the production methods described in Patent Document 1 or 2.

[0009] Therefore, an object of the present invention is to provide a nucleating agent composition, an olefin resin composition, a molded article thereof, and a method for producing an olefin resin composition that can impart excellent crystallinity to an olefin resin and obtain a molded article having excellent mechanical properties and transparency. MEANS FOR SOLVING THE PROBLEMS

[0010] As a result of intensive studies to solve the above problems, the present inventors have found that by using a combination of a specific aromatic phosphate metal salt and a specific auxiliary agent, the physical properties of a molded article made of an olefin resin composition are significantly improved, and the present invention has been completed.

[0011] That is, the nucleating agent composition of the present invention contains a nucleating agent and an auxiliary agent, and the nucleating agent has the following general formula (1), TIFF0007717214000001.tif45169 (In general formula (1), R 1 ~R 4 represents an alkyl group having 1 to 6 carbon atoms, and R 5represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, n represents 1 or 2, when n is 1, M represents lithium or dihydroxyaluminum, and when n is 2, M represents hydroxyaluminum.) It contains an aromatic phosphate metal salt represented by the formula, the auxiliary agent is at least one selected from the group consisting of water and polyol compounds, and the content of the auxiliary agent with respect to 100 parts by mass of the nucleating agent is 1 to 10,000 parts by mass.

[0012] In the nucleating agent composition of the present invention, it is preferable that the polyol compound is at least one selected from the group consisting of glycols, sugar alcohols, mono-fatty acid esters of sugar alcohols, and polyvinyl alcohol.

[0013] Further, the olefin resin composition of the present invention contains an olefin resin, a nucleating agent, and an auxiliary agent, and the nucleating agent has the following general formula (1), TIFF0007717214000002.tif45169 (In the general formula (1), R 1 ~R 4 represents an alkyl group having 1 to 6 carbon atoms, R 5 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, n represents 1 or 2, when n is 1, M represents lithium or dihydroxyaluminum, and when n is 2, M represents hydroxyaluminum.) It contains an aromatic phosphate metal salt represented by the formula, the auxiliary agent is at least one selected from the group consisting of water and polyol compounds, It is characterized in that 0.001 to 5 parts by mass of the nucleating agent and 0.003 to 10 parts by mass of the auxiliary agent are contained with respect to 100 parts by mass of the olefin resin.

[0014] In the olefin resin composition of the present invention, it is preferable that the polyol compound is at least one selected from the group consisting of glycols, sugar alcohols, mono-fatty acid esters of sugar alcohols, and polyvinyl alcohol.

[0015] The molded article of the present invention is characterized by being formed by molding the olefin resin composition of the present invention.

[0016] The method for producing an olefin resin composition of the present invention includes a preparation step of preparing an olefin resin not containing a nucleating agent component, a compounding step of compounding a nucleating agent and an auxiliary agent to the olefin resin not containing the nucleating agent component prepared in the preparation step to obtain an olefin resin compound, and the nucleating agent is represented by the following general formula (1), TIFF0007717214000003.tif45169(In the general formula (1), R 1 ~R 4 represents an alkyl group having 1 to 6 carbon atoms, R 5 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, n represents 1 or 2, when n is 1, M represents lithium or dihydroxyaluminum, and when n is 2, M represents hydroxyaluminum.) and contains an aromatic phosphate metal salt represented by the auxiliary agent is at least one selected from the group consisting of water and polyol compounds, in the compounding step, 0.001 to 5 parts by mass of the nucleating agent and 0.003 to 10 parts by mass of the auxiliary agent are compounded with respect to 100 parts by mass of the olefin resin not containing the nucleating agent component.

[0017] In the method for producing an olefin resin composition of the present invention, it is preferable to further include a melt-kneading step of melt-kneading the olefin resin compound obtained in the compounding step to obtain an olefin resin composition.

[0018] Also, in the method for producing an olefin resin composition of the present invention, the polyol compound is preferably at least one selected from the group consisting of glycols, sugar alcohols, mono-fatty acid esters of sugar alcohols, and polyvinyl alcohol.

Effects of the Invention

[0019] According to the present invention, it is possible to provide a nucleating agent composition, an olefin resin composition, a molded article thereof, and a method for producing an olefin resin composition, which can impart excellent crystallinity to an olefin resin and obtain a molded article having excellent mechanical properties and transparency.

Mode for Carrying Out the Invention

[0020] Hereinafter, embodiments of the present invention will be described in detail. First, the nucleating agent composition of the present invention will be described. The nucleating agent composition of the present invention contains a nucleating agent and an auxiliary agent. Here, the nucleating agent contains an aromatic phosphate metal salt represented by the following general formula (1), and the auxiliary agent is at least one selected from the group consisting of water and polyol compounds. In the nucleating agent composition of the present invention, the content of the auxiliary agent is 1 to 10,000 parts by mass with respect to 100 parts by mass of the nucleating agent.

[0021] TIFF0007717214000004.tif45169

[0022] Here, in the general formula (1), R 1 ~R 4 represents an alkyl group having 1 to 6 carbon atoms, R 5 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, n represents 1 or 2, and when n is 1, M represents lithium or dihydroxyaluminum, and when n is 2, M represents hydroxyaluminum.

[0023] The nucleating agent composition of the present invention can impart excellent crystallinity to an olefin resin. Further, according to the nucleating agent composition of the present invention, a molded article made of an olefin resin having excellent mechanical properties and transparency can be obtained.

[0024] As described above, the nucleating agent composition of the present invention contains a nucleating agent, and this nucleating agent contains a phosphate metal salt represented by the general formula (1). R 1 ~R 4Examples of the alkyl group having 1 to 6 carbon atoms represented by include methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl, isobutyl, amyl, isoamyl, tert-amyl, hexyl, 2-hexyl, 3-hexyl and the like. Among these, tert-butyl is preferable because of its excellent nucleating agent effect. Further, R in the general formula (1) 5 Examples of the alkyl group having 1 to 3 carbon atoms represented by include methyl, ethyl, propyl and isopropyl.

[0025] Specific examples of the aromatic phosphate metal salt represented by the general formula (1) include compounds represented by the following chemical formulas and the like.

[0026] TIFF0007717214000005.tif105169

[0027] The nucleating agent contained in the nucleating agent composition of the present invention may contain a compound different from the aromatic phosphate metal salt represented by the general formula (1). Examples of the compound different from the aromatic phosphate metal salt represented by the general formula (1) include sodium-2,2'-methylenebis(4,6-di-tert-butylphenyl) phosphate, sodium benzoate, aluminum 4-tert-butylbenzoate, sodium adipate and 2-sodium bicyclo[2.2.1]heptane-2,3-dicarboxylate, carboxylic acid metal salts such as calcium cyclohexane-1,2-dicarboxylate, N,N',N''-tris[2-methylcyclohexyl]-1,2,3-propanetricarboxamide, N,N',N''-tricyclohexyl-1,3,5-benzenetricarboxamide, N,N'-dicyclohexylnaphthalenedicarboxamide, amide compounds such as 1,3,5-tri(dimethylisopropylamino)benzene, and the like. When a compound different from the aromatic phosphate metal salt represented by the general formula (1) is blended, the blending amount is such that the total amount of the aromatic phosphate metal salt represented by the general formula (1) and the compound different from the aromatic phosphate metal salt represented by the general formula (1) is 0.001 to 5 parts by mass, preferably 0.005 to 5 parts by mass, and more preferably 0.01 to 1 part by mass with respect to 100 parts by mass of the olefin resin. In addition, the proportion of the aromatic phosphate metal salt represented by the general formula (1) in the total of the aromatic phosphate metal salt represented by the general formula (1) and the compound different from the aromatic phosphate metal salt represented by the general formula (1) is preferably 50% by mass or more, more preferably 60% by mass or more, further preferably 95% by mass or more, and particularly preferably 100% by mass.

[0028] As described above, the nucleating agent composition of the present invention contains an auxiliary agent, and the auxiliary agent is at least one selected from the group consisting of water and polyol compounds.

[0029] Examples of the water include tap water, industrial water, purified water and the like. Examples of the purified water include ion-exchanged water, ultrafiltration water, reverse osmosis water, distilled water and the like.

[0030] A polyol compound is a compound having two or more hydroxyl groups. Specific examples of the polyol compound include, for example, 1,2-ethanediol, 1,3-propanediol, 1,2-propanediol, 1,4-butanediol, 1,3-butanediol, neopentyl glycol, diethylene glycol, triethylene glycol, polyethylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, cyclobutanediol, cyclopentanediol, cyclohexanediol, cycloheptanediol, cyclooctanediol, cyclohexanedimethanol, tricyclohexanedimethanol, tricyclodecanedimethanol, hydroxypropylcyclohexanol, tricyclo[5,2,1,0,2,6]decane-dimethanol, bicyclo[4,3,0]-nonanediol, dicyclohexanediol, tricyclo[5,3,1,1]dodecanediol, bicyclo[4,3,0]nonanedimethanol, tricyclo[5,3,1,1]dodecane-diethanol, hydroxypropyltricyclo[5,3,1,1]dodecanol, spiro[3,4]octanediol, butylcyclohexanediol, 1,1'-bicyclohexylidenediol, 4,4'-isopropylidene-biscyclohexanol, 4,4'-oxybiscyclohexanol, glycols such as bis(4-hydroxycyclohexanol)methane, glycerol, erythritol, pentaerythritol, dipentaerythritol, sorbitol, xylitol, maltitol, lactitol, mannitol, isomalt and other sugar alcohols, mono-fatty acid esters composed of these sugar alcohols and fatty acids such as myristic acid, palmitic acid, stearic acid, oleic acid, 12-hydroxystearic acid, polyvinyl alcohol, polycaprolactone triol, cyclohexanetriol, trimethylolethane, trimethylolpropane, ditrimethylolpropane and other linear, branched or cyclic aliphatic polyols having three or more hydroxyl groups, cyclohexanedietanoldihydroxybenzene, benzenetriol, hydroxybenzyl alcohol, dihydroxytoluene, 4,4'-oxybisphenol, 4,4'-dihydroxybenzophenone, 4,Aromatic polyols such as 4'-thiobisphenol, phenolphthalein, bis(4-hydroxyphenyl)methane, 4,4'-(1,2-ethenediyl)bisphenol, 4,4'-sulfonylbisphenol, 4,4'-isopropylidenebis(2,6-dibromophenol), 4,4'-isopropylidenebis(2,6-dichlorophenol), 4,4'-isopropylidenebis(2,3,5,6-tetrachlorophenol), and 4,4'-thiobiscyclohexanol can be mentioned.,

[0031] Among these, glycols, sugar alcohols, monofatty acid esters composed of sugar alcohols and fatty acids, and polyvinyl alcohol are preferable from the viewpoint of further improving the mechanical properties and transparency of the molded article. Ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, glycerol, erythritol, pentaerythritol, dipentaerythritol, xylitol, sorbitol, maltitol, lactitol, glycerol monostearate, glycerol monooleate, glycerol mono-12-hydroxystearate, and polyvinyl alcohol are more preferable. Ethylene glycol, glycerol, pentaerythritol, xylitol, glycerol monostearate, and polyvinyl alcohol are particularly preferable.,

[0032] The auxiliary agent contained in the nucleating agent composition of the present invention may consist only of water, may consist of a polyol compound, or may consist of a mixture of water and a polyol compound.,

[0033] From the viewpoint of obtaining a molded article having excellent mechanical properties and transparency without significantly affecting properties other than mechanical properties and transparency, the auxiliary agent contained in the nucleating agent composition of the present invention preferably consists of water.,

[0034] Also, from the viewpoint of imparting particularly excellent crystallinity to the olefin resin, the auxiliary agent contained in the nucleating agent composition of the present invention preferably consists of a polyol compound. When the auxiliary agent consists of a polyol compound, from the viewpoint of suppressing the volatilization of the auxiliary agent during molding, the polyol compound is preferably solid or liquid at 230°C, more preferably solid or liquid at 250°C, and even more preferably solid or liquid at 280°C.

[0035] In the nucleating agent composition of the present invention, the content of the auxiliary agent is 1 to 10,000 parts by mass with respect to 100 parts by mass of the nucleating agent. From the viewpoint of imparting particularly excellent nucleating agent performance to the olefin resin, the content of the auxiliary agent is preferably 5 to 1,000 parts by mass with respect to 100 parts by mass of the nucleating agent, and more preferably 10 to 500 parts by mass.

[0036] In the nucleating agent composition of the present invention, other additives that can be further blended with the olefin resin may be blended as long as the properties of the molded product are not significantly impaired. Further, the nucleating agent composition of the present invention may be a masterbatch further containing an olefin resin.

[0037] Examples of other additives include additives generally used in olefin resins, such as phenolic antioxidants, phosphorus-based antioxidants, sulfur-based antioxidants, ultraviolet absorbers, hindered amine compounds, flame retardants, flame retardant aids, lubricants, fillers, hydrotalcites, fatty acid metal salts, antistatic agents, fluorescent brighteners, pigments, dyes, and the like. In the nucleating agent composition of the present invention, the blending amount of other additives is within a range that does not impair the effects of the present invention, and is an appropriate blending amount for imparting desired performance to the molded product when the nucleating agent composition of the present invention is blended with an olefin resin and molded.

[0038] Examples of phenolic antioxidants include 2,6-di-tert-butyl-4-ethylphenol, 2-tert-butyl-4,6-dimethylphenol, styrenated phenol, 2,2'-methylenebis(4-ethyl-6-tert-butylphenol), 2,2'-thiobis-(6-tert-butyl-4-methylphenol), 2,2'-thiodiethylenebis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 2-methyl-4,6-bis(octylsulfanylmethyl)phenol, 2,2'-isobutylidenebis(4,6-dimethylphenol), isooctyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, N,N'-hexane-1,6-diylbis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionamide], 2,2'-oxamide-bis[ethyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 2-ethylhexyl 3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate, 2,2'-ethylenebis(4,6-di-tert-butylphenol), 3,5-di-tert-butyl-4-hydroxy-benzenepropanoic acid and C13-15 alkyl esters, 2,5-di-tert-amylhydroquinone, a polymer of hindered phenol (trade name "AO.OH.98" manufactured by ADEKA POLYMER ADDITIVES EUROPE SAS), 2,2'-methylenebis[6-(1-methylcyclohexyl)-p-cresol], 2-tert-butyl-6-(3-tert-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl acrylate, 2-[1-(2-hydroxy-3,5-di-tert-pentylphenyl)ethyl]-4,6-di-tert-pentylphenyl acrylate, 6-[3-(3-tert-butyl-4-hydroxy-5-methyl)propoxy]-2,4,8,10-tetra-tert-butylbenz[d,f][1,3,2]-dioxaphosphobin, hexamethylenebis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], bis[monoethyl(3,(5-Di-tert-butyl-4-hydroxybenzyl)phosphonate calcium salt, reaction product of 5,7-bis(1,1-dimethylethyl)-3-hydroxy-2(3H)-benzofuranone and o-xylene, 2,6-di-tert-butyl-4-(4,6-bis(octylthio)-1,3,5-triazin-2-ylamino)phenol, DL-α-tocopherol (vitamin E), 2,6-bis(α-methylbenzyl)-4-methylphenol, bis[3,3-bis-(4'-hydroxy-3'-tert-butyl-phenyl)butanoic acid] glycol ester, 2,6-di-tert-butyl-p-cresol, 2,6-diphenyl-4-octadecyloxyphenol, stearyl(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, distearyl(3,5-di-tert-butyl-4-hydroxybenzyl)phosphonate, tridecyl-3,5-tert-butyl-4-hydroxybenzylthioacetate, thiodiethylene bis[(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 4,4'-thiobis(6-tert-butyl-m-cresol), 2-octylthio-4,6-di(3,5-di-tert-butyl-4-hydroxyphenoxy)-s-triazine, 2,2'-methylenebis(4-methyl-6-tert-butylphenol), bis[3,3-bis(4-hydroxy-3-tert-butylphenyl)butyric acid] glycol ester, 4,4'-butylidenebis(2,6-di-tert-butylphenol), 4,4'-butylidenebis(6-tert-butyl-3-methylphenol), 2,2'-ethylidenebis(4,6-di-tert-butylphenol), 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, bis[2-tert-butyl-4-methyl-6-(2-hydroxy-3-tert-butyl-5-methylbenzyl)phenyl] terephthalate, 1,3,5-tris(2,6-dimethyl-3-hydroxy-4-tert-butylbenzyl)isocyanurate, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-Trimethylbenzene, 1,3,5-tris[(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxyethyl]isocyanurate, tetrakis[methylene-3-(3’,5’-di-tert-butyl-4’-hydroxyphenyl)propionate]methane, 2-tert-butyl-4-methyl-6-(2-acryloyloxy-3-tert-butyl-5-methylbenzyl)phenol, 3,9-bis[2-(3-tert-butyl-4-hydroxy-5-methylhydrocinnamoyloxy)-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane, triethylene glycol bis[β-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate], stearyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate amide, palmitoyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate amide, myristyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate amide, lauryl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate amide and other 3-(3,5-dialkyl-4-hydroxyphenyl)propionate derivatives, etc. are mentioned. When blending a phenolic antioxidant, the blending amount is preferably adjusted to be 0.001 to 5 parts by mass, more preferably 0.03 to 3 parts by mass, based on 100 parts by mass of the olefin resin.,

[0039] Examples of phosphorus-based antioxidants include triphenyl phosphite, diisooctyl phosphite, heptakis(dipropylene glycol) triphosphite, triisodecyl phosphite, diphenyl isooctyl phosphite, diisooctyl phenyl phosphite, diphenyl tridecyl phosphite, triisooctyl phosphite, trilauryl phosphite, diphenyl phosphite, tris(dipropylene glycol) phosphite, dioleyl hydrogen phosphite, trilauryl trithiophosphite, bis(tridecyl) phosphite, tris(isodecyl) phosphite, tris(tridecyl) phosphite, diphenyl decyl phosphite, dinonyl phenyl bis(nonyl phenyl) phosphite, poly(dipropylene glycol) phenyl phosphite, tetraphenyl dipropyl glycol diphosphite, trisnonyl phenyl phosphite, tris(2,4-di-tert-butylphenyl) phosphite, tris(2,4-di-tert-butyl-5-methylphenyl) phosphite, tris[2-tert-butyl-4-(3-tert-butyl-4-hydroxy-5-methylphenylthio)-5-methylphenyl] phosphite, tri(decyl) phosphite, octyl diphenyl phosphite, di(decyl) monophenyl phosphite, a mixture of distearyl pentaerythritol and calcium stearate, alkyl (C10) bisphenol A phosphite, tetraphenyl-tetra(tridecyl) pentaerythritol tetraphosphite, bis(2,4-di-tert-butyl-6-methylphenyl) ethyl phosphite, tetra(tridecyl) isopropylidene diphenol diphosphite, tetra(tridecyl)-4,4'-n-butylidene bis(2-tert-butyl-5-methylphenol) diphosphite, hexa(tridecyl)-1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl) butane triphosphite, tetrakis(2,4-di-tert-butylphenyl) biphenylene diphosphonite, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, (1-methyl-1-propenyl-3-ylidene) tris(1,1-dimethylethyl)-5-methyl-4,1-Phenylene) hexatridecyl phosphite, 2,2'-methylenebis(4,6-di-tert-butylphenyl)-2-ethylhexyl phosphite, 2,2'-methylenebis(4,6-di-tert-butylphenyl)-octadecyl phosphite, 2,2'-ethylidenebis(4,6-di-tert-butylphenyl) fluorophosphite, 4,4'-butylidenebis(3-methyl-6-tert-butylphenylditridecyl) phosphite, tris(2-[(2,4,8,10-tetrakis-tert-butyldibenzod[f][1,3,2]dioxaphosphepin-6-yl)oxy]ethyl)amine, 3,9-bis(4-nonylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5,5]undecane, 2,4,6-tri-tert-butylphenyl-2-butyl-2-ethyl-1,3-propanediol phosphite, poly 4,4'-isopropylidenediphenol C12-15 alcohol phosphite, bis(diisodecyl) pentaerythritol diphosphite, bis(tridecyl) pentaerythritol diphosphite, bis(octadecyl) pentaerythritol diphosphite, bis(nonylphenyl) pentaerythritol diphosphite, bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite, bis(2,4,6-tri-tert-butylphenyl) pentaerythritol diphosphite, bis(2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite, bis(2,4-dicumylphenyl) pentaerythritol diphosphite and the like can be mentioned. When blending a phosphorus-based antioxidant, the blending amount is preferably adjusted to be 0.001 to 10 parts by mass, more preferably 0.01 to 0.5 parts by mass, based on 100 parts by mass of the olefin resin.,

[0040] Examples of sulfur-based antioxidants include tetrakis[methylene-3-(laurylthio)propionate]methane, bis(methyl-4-[3-n-alkyl (C12 / C14) thiopropionyloxy] 5-tert-butylphenyl)sulfide, ditridecyl-3,3'-thiodipropionate, dilauryl-3,3'-thiodipropionate, dimyristyl-3,3'-thiodipropionate, distearyl-3,3'-thiodipropionate, lauryl / stearyl thiodipropionate, 4,4'-thiobis(6-tert-butyl-m-cresol), 2,2'-thiobis(6-tert-butyl-p-cresol), and distearyl disulfide. When compounding a sulfur-based antioxidant, the compounding amount is preferably adjusted to be 0.001 to 10 parts by mass, more preferably 0.01 to 0.5 parts by mass, per 100 parts by mass of the olefin resin.

[0041] Examples of the ultraviolet absorber include 2-hydroxybenzophenones such as 2,4-dihydroxybenzophenone and 5,5'-methylenebis(2-hydroxy-4-methoxybenzophenone); 2-(2-hydroxyphenyl)benzotriazoles such as 2-(2-hydroxy-5-methylphenyl)benzotriazole, 2-(2-hydroxy-5-tert-octylphenyl)benzotriazole, 2-(2-hydroxy-3,5-di-tert-butylphenyl)-5-chlorobenzotriazole, 2-(2-hydroxy-3-tert-butyl-5-methylphenyl)-5-chlorobenzotriazole, 2-(2-hydroxy-3,5-dicumylphenyl)benzotriazole, 2,2'-methylenebis(4-tert-octyl-6-benzotriazolylphenol), polyethylene glycol ester of 2-(2-hydroxy-3-tert-butyl-5-carboxyphenyl)benzotriazole, 2-[2-hydroxy-3-(2-acryloyloxyethyl)-5-methylphenyl]benzotriazole, 2-[2-hydroxy-3-(2-methacryloyloxyethyl)-5-tert-butylphenyl]benzotriazole, 2-[2-hydroxy-3-(2-methacryloyloxyethyl)-5-tert-octylphenyl]benzotriazole, 2-[2-hydroxy-3-(2-methacryloyloxyethyl)-5-tert-butylphenyl]-5-chlorobenzotriazole, 2-[2-hydroxy-5-(2-methacryloyloxyethyl)phenyl]benzotriazole, 2-[2-hydroxy-3-tert-butyl-5-(2-methacryloyloxyethyl)phenyl]benzotriazole, 2-[2-hydroxy-3-tert-amyl-5-(2-methacryloyloxyethyl)phenyl]benzotriazole, 2-[2-hydroxy-3-tert-butyl-5-(3-methacryloyloxypropyl)phenyl]-5-chlorobenzotriazole, 2-[2-hydroxy-4-(2-methacryloyloxymethyl)phenyl]benzotriazole, 2-[2-hydroxy-4-(3-methacryloyloxy-2-hydroxypropyl)phenyl]benzotriazole, 2-[2-hydroxy-4-(3-methacryloyloxypropyl)phenyl]benzotriazole;Substituted oxanilides such as phenyl salicylate, resorcinol monobenzoate, 2-ethyl-2'-ethoxyoxanilide, 2-ethoxy-4'-dodecyloxanilide; cyanoacrylates such as ethyl-α-cyano-β,β-diphenylacrylate, methyl-2-cyano-3-methyl-3-(p-methoxyphenyl)acrylate; triazines such as 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-hexyloxyphenol, 2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, trioctyl-2,2',2''-((1,3,5-triazine-2,4,6-triyl)tris(3-hydroxybenzene-4,1-diyl)tripropionate), 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-[2-(2-ethylhexanoyloxy)ethoxy]phenol, 2,4,6-tris(2-hydroxy-4-hexyloxy-3-methylphenyl)-1,3,5-triazine, 1,12-bis[2-[4-(4,6-diphenyl-1,3,5-triazin-2-yl)-3-hydroxyphenoxy]ethyl]dodecanedioate; various metal salts or metal chelates, particularly salts or chelates of nickel and chromium, etc. When blending the ultraviolet absorber, the blending amount is preferably adjusted to be 0.001 to 10 parts by mass, more preferably 0.01 to 0.5 parts by mass, per 100 parts by mass of the olefin resin.;

[0042] Examples of hindered amine compounds include 2,2,6,6-tetramethyl-4-piperidyl stearate, 1,2,2,6,6-pentamethyl-4-piperidyl stearate, 2,2,6,6-tetramethyl-4-piperidyl benzoate, bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate, tetrakis(2,2,6,6-tetramethyl-4-piperidyl)-1,2,3,4-butanetetracarboxylate, tetrakis(1,2,2,6,6-pentamethyl-4-piperidyl)-1,2,3,4-butanetetracarboxylate, bis(2,2,6,6-tetramethyl-4-piperidyl)·di(tridecyl)-1,2,3,4-butanetetracarboxylate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)-di(tridecyl)-1,2,3,4-butanetetracarboxylate, bis(1,2,2,4,4-pentamethyl-4-piperidyl)-2-butyl-2-(3,5-di-tert-butyl-4-hydroxybenzyl) malonate, 1-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-piperidinol / succinic acid diethyl polycondensate, 1,6-bis(2,2,6,6-tetramethyl-4-piperidylamino)hexane / 2,4-dichloro-6-morpholino-s-triazine polycondensate, 1,6-bis(2,2,6,6-tetramethyl-4-piperidylamino)hexane / 2,4-dichloro-6-tert-octylamino-s-triazine polycondensate, 1,5,8,12-tetrakis〔2,4-bis(N-butyl-N-(2,2,6,6-tetramethyl-4-piperidyl)amino)-s-triazin-6-yl〕-1,5,8,12-tetraazadodecane, 1,5,8,12-tetrakis〔2,4-bis(N-butyl-N-(1,2,2,6,6-pentamethyl-4-piperidyl)amino)-s-triazin-6-yl〕-1,5,8-12-tetraazadodecane, 1,6,11-tris〔2,4-bis(N-butyl-N-(2,2,6,6-tetramethyl-4-piperidyl)amino)-s-triazin-6-yl〕aminoundecane, 1,6,11-tris〔2,4-bis(N-butyl-N-(1,2,2,6,6-pentamethyl-4-piperidyl)amino)-s-triazin-6-yl〕aminoundecane, bis{4-(1-octyloxy-2,2,6,Examples thereof include bis{4-(2,2,6,6-tetramethyl-1-piperidyl)} sebacate, bis{4-(2,2,6,6-tetramethyl-1-piperidyl)} adipate, bis{2,2,6,6-tetramethyl-4-(2,2,6,6-tetramethyl-1-piperidyl)oxy} piperazine, tris{2,2,6,6-tetramethyl-4-(2,2,6,6-tetramethyl-1-piperidyl)oxy} triazine, bis{4-(2,2,6,6-tetramethyl-1-piperidyl)oxy-2,2,6,6-tetramethylpiperidin-3-yl} sebacate, bis{4-(2,2,6,6-tetramethyl-1-undecyloxy)piperidyl} carbonate, etc. When blending a hindered amine compound, the blending amount is preferably adjusted to be 0.001 to 10 parts by mass, more preferably 0.01 to 0.5 parts by mass, per 100 parts by mass of the olefin resin.,

[0043] Examples of the flame retardant include aromatic phosphoric acid esters such as triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, cresyl-2,6-dixylenyl phosphate, resorcinol bis(diphenyl phosphate), (1-methylethylidene)-4,1-phenylene tetraphenyl diphosphate, 1,3-phenylene tetrakis(2,6-dimethylphenyl) phosphate, products with the trade names "ADEKA STAB FP-500", "ADEKA STAB FP-600", and "ADEKA STAB FP-800" manufactured by ADEKA Corporation; phosphonic acid esters such as divinyl phenylphosphonate, diallyl phenylphosphonate, (1-butenyl) phenylphosphonate; phosphinic acid esters such as phenyl diphenylphosphinate, methyl diphenylphosphinate, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide derivatives; phosphazene compounds such as bis(2-allylphenoxy)phosphazene, dicresylphosphazene; phosphorus-based flame retardants such as melamine phosphate, melamine pyrophosphate, melamine polyphosphate, melam polyphosphate, ammonium polyphosphate, piperazine phosphate, piperazine pyrophosphate, piperazine polyphosphate, phosphorus-containing vinylbenzyl compounds, and red phosphorus; metal hydroxides such as magnesium hydroxide, aluminum hydroxide; brominated bisphenol A type epoxy resins, brominated phenol novolac type epoxy resins, hexabromobenzene, pentabromotoluene, ethylene bis(pentabromophenyl), ethylene bistetrabromophthalimide, 1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane, tetrabromocyclooctane, hexabromocyclododecane, bis(tribromophenoxy)ethane, brominated polyphenylene ether, brominated polystyrene, and 2,4,6-tris(tribromophenoxy)-1,3,5-triazine; bromine-based flame retardants such as tribromophenyl maleimide, tribromophenyl acrylate, tribromophenyl methacrylate, tetrabromobisphenol A type dimethacrylate, pentabromobenzyl acrylate, and brominated styrene. These flame retardants are preferably used in combination with drip preventives such as fluororesins and flame retardant aids such as polyhydric alcohols and hydrotalcite.When blending a flame retardant, the blending amount is preferably adjusted to be 1 to 100 parts by mass, more preferably 10 to 70 parts by mass, per 100 parts by mass of the olefin resin.

[0044] The lubricant is added for the purpose of imparting lubricity to the surface of the molded body and enhancing the anti-scratch effect. Examples of the lubricant include unsaturated fatty acid amides such as oleic acid amide and erucic acid amide; saturated fatty acid amides such as behenic acid amide and stearic acid amide, butyl stearate, stearyl alcohol, stearic acid monoglyceride, sorbitan monopalmitate, sorbitan monostearate, mannitol, stearic acid, hydrogenated castor oil, stearic acid amide, oleic acid amide, ethylene bisstearic acid amide, etc. These may be used alone or in combination of two or more. When blending a lubricant, the blending amount is preferably adjusted to be 0.01 to 2 parts by mass, more preferably 0.03 to 1 part by mass, per 100 parts by mass of the olefin resin.

[0045] The filler is roughly classified into an organic filler and an inorganic filler. Examples of the organic filler include natural-derived polymers such as starch, cellulose, wood powder, okara, sawdust, bran, and modified products thereof. Examples of the inorganic filler include talc, calcium carbonate, zinc carbonate, wollastonite, silica, mica, alumina, magnesium oxide, calcium silicate, sodium aluminate, calcium aluminate, sodium aluminosilicate, magnesium silicate, glass balloon, carbon black, zinc oxide, antimony trioxide, zeolite, metal fiber, metal whisker, ceramic whisker, potassium titanate, boron nitride, graphite, carbon fiber, etc. When blending a filler, the blending amount is preferably adjusted to be 0.1 to 500 parts by mass, more preferably 1 to 100 parts by mass, per 100 parts by mass of the olefin resin.

[0046] Hydrotalcites are double salt compounds composed of magnesium, aluminum, hydroxyl groups, carbonate groups, and optional water of crystallization, known as natural or synthetic substances. Examples include those in which part of the magnesium or aluminum is replaced with other metals such as alkali metals or zinc, or those in which the hydroxyl groups and carbonate groups are replaced with other anion groups. Specifically, for example, those in which the metal of the hydrotalcite represented by the following general formula (2) is replaced with an alkali metal can be mentioned. Also, as Al-Li-based hydrotalcites, the compound represented by the following general formula (3) can also be used.

[0047] TIFF0007717214000006.tif11165

[0048] Here, in the general formula (2), x1 and x2 are respectively the following formulas, 0≦x2 / x1<10, 2≦x1 + x2≦20 represent numbers that satisfy the conditions represented, and p represents 0 or a positive number.

[0049] TIFF0007717214000007.tif11165

[0050] Here, in the general formula (3), A q- represents a q-valent anion, and p represents 0 or a positive number.

[0051] Also, the carbonate anion in hydrotalcites may be partially replaced with other anions.

[0052] Hydrotalcites may be those in which the water of crystallization has been dehydrated, or those coated with higher fatty acids such as stearic acid, metal salts of higher fatty acids such as alkali metal oleates, metal salts of organic sulfonic acids such as alkali metal dodecylbenzenesulfonates, higher fatty acid amides, higher fatty acid esters, or waxes.

[0053] Hydrotalcites may be natural products or synthetic products. Known methods described in, for example, Japanese Patent Publication No. 46-2280, Japanese Patent Publication No. 50-30039, Japanese Patent Publication No. 51-29129, Japanese Patent Publication No. 3-36839, Japanese Patent Laid-Open No. 61-174270, Japanese Patent Laid-Open No. 5-179052, etc. can be cited as the methods for synthesizing the compounds. Further, hydrotalcites can be used without being restricted by their crystal structures, crystal particles, etc. When compounding hydrotalcites, the compounding amount is preferably adjusted to be 0.001 to 5 parts by mass, more preferably 0.01 to 3 parts by mass, based on 100 parts by mass of the olefin resin.

[0054] From the viewpoint of obtaining heat resistance and the dispersion effect of the nucleating agent in the resin, the fatty acid metal salt is preferably a compound represented by the following general formula (4).

[0055] TIFF0007717214000008.tif14165

[0056] Here, in the general formula (4), R 6 represents a linear or branched fatty acid having 12 to 20 carbon atoms, and the fatty acid may be substituted with a hydroxyl group. M 2 represents a metal atom having a valence of 1 to 3, the metal atom may have a hydroxy group, and m represents an integer of 1 to 3.

[0057] The fatty acid metal salt is preferably a metal salt of lauric acid, myristic acid, palmitic acid, stearic acid, 12-hydroxystearic acid, etc. Examples of the metal salt of the fatty acid metal salt include sodium, potassium, lithium, calcium, zinc, barium, magnesium, hydroxyaluminum, etc., and sodium, lithium, and potassium are more preferable.

[0058] Examples of antistatic agents include low-molecular antistatic agents such as nonionic, anionic, cationic, or amphoteric surfactants, and high-molecular antistatic agents made of high-molecular compounds. Examples of nonionic surfactants include polyethylene glycol type nonionic surfactants such as higher alcohol ethylene oxide adducts, fatty acid ethylene oxide adducts, higher alkylamine ethylene oxide adducts, and polypropylene glycol ethylene oxide adducts; polyhydric alcohol type nonionic surfactants such as polyethylene oxide, fatty acid esters of glycerin, fatty acid esters of pentaerythritol, fatty acid esters of sorbitol or sorbitan, alkyl ethers of polyhydric alcohols, and aliphatic amides of alkanolamines. Examples of anionic surfactants include carboxylates such as alkali metal salts of higher fatty acids; sulfate esters such as higher alcohol sulfate ester salts and higher alkyl ether sulfate ester salts, sulfonates such as alkylbenzene sulfonates, alkyl sulfonates, and paraffin sulfonates; and phosphate esters such as higher alcohol phosphate ester salts. Examples of cationic surfactants include quaternary ammonium salts such as alkyltrimethylammonium salts. Examples of amphoteric surfactants include amino acid type amphoteric surfactants such as higher alkylaminopropionate salts, and betaine type amphoteric surfactants such as higher alkyldimethylbetaine and higher alkyldihydroxyethylbetaine. Among these, anionic surfactants are preferred, and particularly, sulfonates such as alkylbenzene sulfonates, alkyl sulfonates, and paraffin sulfonates are preferred. When blending a low-molecular antistatic agent, the blending amount is preferably adjusted to be 0.1 to 10 parts by mass, more preferably 0.5 to 5 parts by mass, per 100 parts by mass of the olefin resin.

[0059] Examples of the polymer type antistatic agent include ionomers and block polymers having polyethylene glycol as a hydrophilic part. Examples of the ionomer include the ionomer described in JP-A-2010-132927. Examples of the polymer having polyethylene glycol as a hydrophilic part include polyether ester amide described in JP-A-7-10989, a polymer composed of a polyolefin and polyethylene glycol described in US Patent No. 6552131, and a polymer composed of a polyester and polyethylene glycol described in JP-A-2016-023254. When the polymer type antistatic agent is blended, the blending amount is preferably adjusted to be 3 to 60 parts by mass, more preferably 5 to 25 parts by mass, and still more preferably 7 to 20 parts by mass with respect to 100 parts by mass of the olefin resin.

[0060] A fluorescent brightener is a compound that absorbs ultraviolet rays in sunlight or artificial light and converts them into visible light in the violet to blue range, and promotes the whiteness and blueness of the molded article by fluorescence emission. Examples of the fluorescent brightener include benzoxazole-based compound C.I. Fluorescent Brightner 184, coumarin-based compound C.I. Fluorescent Brightner 52, and diaminostilbene disulfonic acid-based compounds C.I. Fluorescent Brightner 24, 85, 71, etc. When the fluorescent brightener is used, the blending amount is preferably adjusted to be 0.00001 to 0.1 part by mass, more preferably 0.00005 to 0.05 part by mass with respect to 100 parts by mass of the olefin resin.

[0061] Commercially available pigments can also be used. For example, Pigment Red 1, 2, 3, 9, 10, 17, 22, 23, 31, 38, 41, 48, 49, 88, 90, 97, 112, 119, 122, 123, 144, 149, 166, 168, 169, 170, 171, 177, 179, 180, 184, 185, 192, 200, 202, 209, 215, 216, 217, 220, 223, 224, 226, 227, 228, 240, 254; Pigment Orange 13, 31, 34, 36, 38, 43, 46, 48, 49, 51, 52, 55, 59, 60, 61, 62, 64, 65, 71; Pigment Yellow 1, 3, 12, 13, 14, 16, 17, 20, 24, 55, 60, 73, 81, 83, 86, 93, 95, 97, 98, 100, 109, 110, 113, 114, 117, 120, 125, 126, 127, 129, 137, 138, 139, 147, 148, 150, 151, 152, 153, 154, 166, 168, 175, 180, 185; Pigment Green 7, 10, 36; Pigment Blue 15, 15:1, 15:2, 15:3, 15:4, 15:5, 15:6, 22, 24, 29, 56, 60, 61, 62, 64; Pigment Violet 1, 15, 19, 23, 27, 29, 30, 32, 37, 40, 50, etc. can be mentioned.

[0062] Examples of the dyes include azo dyes, anthraquinone dyes, indigoid dyes, triarylmethane dyes, xanthene dyes, alizarin dyes, acridine dyes, stilbene dyes, thiazole dyes, naphthol dyes, quinoline dyes, nitro dyes, indamine dyes, oxazine dyes, phthalocyanine dyes, cyanine dyes, etc. These may be used as a mixture of a plurality of them.

[0063] Next, the olefin resin composition of the present invention will be described. The olefin resin composition of the present invention contains an olefin resin, a nucleating agent, and an auxiliary agent. Here, the nucleating agent contains an aromatic phosphate metal salt represented by the following general formula (1), and the auxiliary agent is at least one selected from the group consisting of water and polyol compounds.

[0064] TIFF0007717214000009.tif45169

[0065] Here, in general formula (1), R 1 ~R 4 represents an alkyl group having 1 to 6 carbon atoms, R 5 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, n represents 1 or 2, and when n is 1, M represents lithium or dihydroxyaluminum, and when n is 2, M represents hydroxyaluminum. And the olefin resin composition of the present invention contains 0.001 to 5 parts by mass of a nucleating agent and 0.003 to 10 parts by mass of an auxiliary agent with respect to 100 parts by mass of the olefin resin.

[0066] The olefin resin composition of the present invention is excellent in crystallinity. Further, according to the olefin resin composition of the present invention, a molded article having excellent mechanical properties and transparency can be obtained.

[0067] Examples of the olefin resin used in the resin composition of the present invention include α-olefin polymers such as low-density polyethylene (LDPE), linear low-density polyethylene (L-LDPE), high-density polyethylene (HDPE), isotactic polypropylene, syndiotactic polypropylene, hemi-isotactic polypropylene, cycloolefin polymer, stereoblock polypropylene, poly-3-methyl-1-butene, poly-3-methyl-1-pentene, poly-4-methyl-1-pentene, etc., homopolypropylene, ethylene / propylene block or random copolymer, impact copolymer polypropylene, ethylene-methyl methacrylate copolymer, ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate copolymer, ethylene-vinyl acetate copolymer, α-olefin copolymers such as ethylene-vinyl alcohol resin (EVOH), etc., and those containing an elastomer composed of an olefin resin may also be used. In the resin composition of the present invention, two or more of these may be blended and used, or a block copolymer may be formed and used as a block polymer type, or the resin may be alloyed. Further, they may be chlorinated products of these olefin resins.

[0068] Examples of the elastomer composed of an olefin resin include an elastomer obtained by blending polyolefins such as polypropylene and polyethylene as hard segments and rubbers such as ethylene-propylene rubber as soft segments, or an elastomer obtained by dynamic crosslinking. Examples of the hard segment include at least one selected from polypropylene homopolymer, polypropylene block copolymer, polypropylene random copolymer, etc. Examples of the soft segment include ethylene-propylene copolymer (EPM), ethylene-propylene-diene copolymer (EPDM), ethylene-vinyl acetate copolymer (EVA), vinyl acetate homopolymer, etc. In the olefin resin composition of the present invention, two or more of these may be blended and used.

[0069] In the resin composition of the present invention, as the olefin resin, polypropylene resins such as polypropylene, ethylene / propylene block or random copolymer, α-olefin / propylene block or random copolymer other than ethylene, and mixtures of these propylene-based polymers with other α-olefin polymers are particularly preferred because the effects of the present invention are remarkable.

[0070] The production method of the olefin resin includes various polymerization catalysts such as Ziegler catalysts, Ziegler-Natta catalysts, metallocene catalysts, etc., co-catalysts, carriers of the catalysts, chain transfer agents, and in various polymerization methods such as gas phase polymerization, solution polymerization, emulsion polymerization, bulk polymerization, etc., various polymerization conditions such as temperature, pressure, concentration, flow rate, and removal of catalyst residues can be appropriately selected for production. Whether the number average molecular weight, weight average molecular weight, molecular weight distribution, melt flow rate, melting point, melting peak temperature, tacticity such as isotactic and syndiotactic, presence or absence and degree of branching, specific gravity, ratio of dissolved components in various solvents, Haze, gloss, impact strength, flexural modulus, Olsen rigidity, and other properties and whether each property value satisfies a specific formula can be appropriately selected according to the desired properties.

[0071] In the olefin resin composition of the present invention, the nucleating agent and the auxiliary agent may be the same as those contained in the nucleating agent composition of the present invention.

[0072] As described above, in the resin composition of the present invention, the content of the nucleating agent is 0.001 to 5 parts by mass with respect to 100 parts by mass of the olefin resin. From the viewpoint of sufficiently obtaining the addition effect of the nucleating agent and suppressing the generation of aggregates of the nucleating agent as foreign matters in the molded product, the content of the nucleating agent is preferably 0.005 to 5 parts by mass, and more preferably 0.01 to 1 part by mass with respect to 100 parts by mass of the olefin resin.

[0073] Also, as described above, in the resin composition of the present invention, the content of the auxiliary agent is 0.003 to 10 parts by mass with respect to 100 parts by mass of the olefin resin. When the content of the auxiliary agent is less than 0.003 parts by mass, the effects of the present invention may not be obtained. When it exceeds 10 parts by mass, the feedability of the composition deteriorates. For example, a bridge may occur in the hopper or feeder of a processing machine such as an extruder, or the composition may foam during extrusion processing, or bubbles may occur in the molded product, deteriorating the appearance. From the viewpoint of sufficiently obtaining the effects of the present invention and sufficiently suppressing the deterioration of the feedability of the composition, the content of the auxiliary agent is preferably 0.01 to 5 parts by mass, more preferably 0.04 to 1 part by mass with respect to 100 parts by mass of the olefin resin. Further, the content of the auxiliary agent is preferably 1 to 10,000 parts by mass, more preferably 5 to 1,000 parts by mass, and even more preferably 10 to 500 parts by mass with respect to 100 parts by mass of the nucleating agent.

[0074] On the other hand, from the viewpoint of sufficiently suppressing foaming during molding without excessive labor required for drying and being uneconomical, the water content of the resin composition of the present invention is preferably in the range of 0.003 to 0.05% by mass, more preferably in the range of 0.005 to 0.03% by mass. Here, the "water content" refers to the water content calculated from the amount of water measured using a polymer moisture meter "Aquatrac 3E" manufactured by ITS Japan Co., Ltd.

[0075] In the resin composition of the present invention, as long as the properties of the molded product are not significantly impaired, other additives that can be blended with the olefin resin may be further blended. As the other additives, the same ones as those used in the nucleating agent composition of the present invention can be used. The blending amount of the other additives is within a range that does not impair the effects of the present invention and is an appropriate blending amount for imparting desired performance to the molded product when the resin composition of the present invention is molded.

[0076] Next, a method for producing the olefin resin composition of the present invention will be described. The method for producing the olefin resin composition of the present invention includes a preparation step of preparing an olefin resin not containing a nucleating agent component, and a compounding step of compounding a nucleating agent and an auxiliary agent to the olefin resin not containing the nucleating agent component prepared in the preparation step to obtain an olefin resin compound. This nucleating agent contains an aromatic phosphate metal salt represented by the following general formula (1). Here, the auxiliary agent is at least one selected from the group consisting of water and polyol compounds. And in the compounding step, the compounding amount of the nucleating agent is 0.001 to 5 parts by mass with respect to 100 parts by mass of the olefin resin not containing the nucleating agent component, and the compounding amount of the auxiliary agent is 0.003 to 10 parts by mass with respect to 100 parts by mass of the olefin resin not containing the nucleating agent component.

[0077] TIFF0007717214000010.tif45169

[0078] Here, in the general formula (1), R 1 ~R 4 represents an alkyl group having 1 to 6 carbon atoms, R 5 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, n represents 1 or 2, and when n is 1, M represents lithium or dihydroxyaluminum, and when n is 2, M represents hydroxyaluminum.

[0079] According to the method for producing the olefin resin composition of the present invention, an olefin resin composition having excellent transparency and mechanical properties can be produced for a molded article.

[0080] In the preparation step, an olefin resin not containing a nucleating agent is prepared. The olefin resin not containing a nucleating agent may contain other additives that can be compounded with the above-described olefin resin.

[0081] In the compounding step, a nucleating agent and an auxiliary agent are compounded to the olefin resin not containing the nucleating agent component prepared in the preparation step to obtain an olefin resin compound.

[0082] As described above, the compounding amount of the nucleating agent is 0.001 to 5 parts by mass with respect to 100 parts by mass of the olefin resin not containing the nucleating agent. From the viewpoint of sufficiently obtaining the addition effect of the nucleating agent and suppressing the occurrence of aggregates of the nucleating agent as foreign matters in the molded product, the compounding amount of the nucleating agent is preferably 0.005 to 5 parts by mass, more preferably 0.01 to 1 part by mass with respect to 100 parts by mass of the olefin resin not containing the nucleating agent.

[0083] Also, as described above, the compounding amount of the auxiliary agent is 0.003 to 10 parts by mass with respect to 100 parts by mass of the olefin resin not containing the nucleating agent. When the compounding amount of the auxiliary agent is less than 0.003 parts by mass, the effects of the present invention may not be obtained. When it exceeds 10 parts by mass, the feedability of the composition deteriorates. For example, a bridge may occur in the hopper or feeder of a processing machine such as an extruder, the composition may foam during extrusion processing, or bubbles may occur in the molded product, deteriorating the appearance. From the viewpoint of sufficiently obtaining the effects of the present invention and sufficiently suppressing the deterioration of the feedability of the composition, the compounding amount of the auxiliary agent is preferably 0.01 to 5 parts by mass, more preferably 0.04 to 1 part by mass with respect to 100 parts by mass of the olefin resin not containing the nucleating agent. Further, the compounding amount of the auxiliary agent is preferably 1 to 10000 parts by mass, more preferably 5 to 1000 parts by mass, and even more preferably 10 to 500 parts by mass with respect to 100 parts by mass of the nucleating agent.

[0084] In the compounding step, other additives that can be compounded with the above-described olefin resin may be further compounded. The method of compounding each component in the compounding step is not particularly limited, and examples thereof include a method of compounding using a mixer such as a Henschel mixer or a tumbler.

[0085] In the compounding process, when water is compounded as an auxiliary agent, the water may be compounded as a hydrate, hydroxide, complex with coordinated water, etc. Examples of hydrates include compounds having water of crystallization, substances containing water in molecular form, inclusion compounds, etc. Examples of hydroxides include metal hydroxides such as calcium hydroxide, magnesium hydroxide, aluminum hydroxide, and boehmite-type aluminum hydroxide. Also, water may be compounded as a water-containing resin composition obtained by compounding an olefin resin and water.

[0086] In the above manner, the olefin resin composition of the present invention is obtained as an olefin resin blend.

[0087] In the method for producing the olefin resin composition of the present invention, it is preferable to further include a melt-kneading step of melt-kneading the olefin resin blend obtained in the compounding step. In this case, an olefin resin composition in which a nucleating agent and an auxiliary agent are uniformly dispersed in the olefin resin is obtained. Also, when water is compounded as an auxiliary agent, excessive water volatilizes during melt-kneading, thereby reducing the water content rate in the composition and sufficiently suppressing foaming during the molding process of the composition. The method of melt-kneading is not particularly limited, and examples include methods using an extruder such as a single-screw extruder or a twin-screw extruder. The temperature of melt-kneading is not particularly limited, and for example, it may be 180 to 300 °C. Also, in the melt-kneading step, other additives that can be further compounded into the above-mentioned olefin resin may be compounded using, for example, a side feeder.

[0088] In the above manner, the olefin resin composition of the present invention is obtained as a melt-kneaded product of the olefin resin blend. The melt-kneaded product of the olefin resin blend thus obtained may be granulated into pellets by a method such as strand cutting using, for example, a pelletizer.

[0089] Next, the molded article of the present invention will be described. The molded article of the present invention is obtained by molding the olefin resin composition of the present invention. The method for molding the resin composition of the present invention is not particularly limited, and known molding methods can be employed. For example, injection molding method, extrusion molding method, blow molding method, rotational molding method, vacuum molding method, inflation molding method, calender molding method, slush molding method, dip molding method, foam molding method, etc. can be used to obtain molded articles. Among these, the injection molding method, extrusion molding method, and blow molding method are preferred.

[0090] Examples of the molded article of the present invention include injection molded articles, fibers, flat yarns, biaxially stretched films, uniaxially stretched films, non-stretched films, sheets, thermoformed articles, extrusion blow molded articles, injection blow molded articles, injection stretch blow molded articles, shaped extrusion molded articles, rotational molded articles, and other molded articles. Among these, injection molded articles, films, sheets, and thermoformed articles are preferred.

[0091] As the uses of the molded article of the present invention, for example, it can be used for various purposes such as building materials, agricultural materials, parts for vehicles such as automobiles, trains, ships, and aircraft, packaging materials, sundries, toys, household appliances, and medical products. Specifically, automobile parts such as bumpers, dashboards, instrument panels, battery cases, luggage cases, door panels, door trims, and fender liners; resin parts for household appliances such as refrigerators, washing machines, and vacuum cleaners; household items such as tableware, bottle caps, buckets, and bath products; resin parts for connection such as connectors; sundries such as toys, storage containers, and synthetic paper; medical molded articles such as medical packs, syringes, catheters, medical tubes, syringe preparations, infusion bags, reagent containers, medicine containers, and individual packages of medicine; building materials such as wall materials, floor materials, window frames, wallpapers, and windows; wire coating materials; agricultural materials such as houses, tunnels, and flat yarn mesh bags; industrial materials such as pallets, steel cans, back grind tapes, tapes for liquid crystal protection, pipes, and modified silicone polymers for sealing materials; food packaging materials such as wraps, trays, cups, films, bottles, caps, and storage containers, 3D printer materials, separator membranes for batteries, fibers such as clothing, woven fabrics, and non-woven fabrics, etc. Furthermore, it can be used for applications when various post-treatments are performed, for example, applications subjected to sterilization by radiation such as medical applications and food packaging applications, or applications subjected to low-temperature plasma treatment, etc. after molding for improving surface characteristics such as paintability. The molded article of the present invention is particularly preferably used for automobile materials, household items, and packaging materials.

Examples

[0092] Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited by the following examples and the like. The evaluation in the examples was carried out according to the following procedure.

[0093] <Crystallization temperature Tc (°C)> The crystallization temperature (°C) of the pellets was measured using a differential scanning calorimeter (Diamond DSC manufactured by PerkinElmer). The measurement method was as follows: The temperature was raised from room temperature to 230°C at a rate of 50°C / min, held for 15 minutes, and then cooled to 50°C at a rate of -10°C / min. In the obtained chart, the temperature at which the exothermic reaction in the cooling process reached the peak top was defined as the crystallization temperature (°C).

[0094] <Flexural modulus (MPa)> Using the pellets obtained by granulation, injection molding was performed with an injection molding machine (EC100-2A; manufactured by Toshiba Machine Co., Ltd.) under the conditions of a mold temperature of 50°C and a resin temperature of 200°C to produce test pieces with dimensions of 80 mm × 10 mm × 4 mm. After standing in a thermostat at 23°C for 48 hours or more, the flexural modulus (MPa) was measured using a flexural testing machine "AG-IS" manufactured by Shimadzu Corporation in accordance with ISO178.

[0095] <Izod impact strength (kJ / m 2 )> Using the pellets obtained by granulation, injection molding was performed with an injection molding machine (EC100-2A; manufactured by Toshiba Machine Co., Ltd.) under the conditions of a mold temperature of 50°C and a resin temperature of 200°C to produce test pieces (with notches) with dimensions of 80 mm × 10 mm × 4 mm. After standing in a thermostat at 23°C for 48 hours or more, the Izod impact strength (kJ / m 2 ) was measured in accordance with ISO180.

[0096] <Half crystallization time T 1 / 2 (seconds)> Using the pellets obtained by granulation, the half crystallization time (T 1 / 2 ) was measured using a differential scanning calorimeter (Diamond DSC manufactured by PerkinElmer). The measurement method was as follows: The temperature was heated from room temperature to 230°C at a rate of 50°C / min, held for 15 minutes, and then cooled to 135°C at a rate of -200°C / min. After reaching 135°C, the temperature was maintained, and the time from the point of reaching 135°C until the heat quantity of the exothermic enthalpy required for crystallization became half was determined, and this was defined as the half crystallization time (seconds).

[0097] <Haze (%)> Using the pellets obtained by granulation, injection molding was carried out with an injection molding machine (EC100-2A; manufactured by Toshiba Machine Co., Ltd.) under the conditions of a mold temperature of 50°C and a resin temperature of 200°C to produce test pieces with dimensions of 60 mm × 60 mm × 2 mm. After molding, the test pieces were immediately allowed to stand in a constant temperature machine at 23°C for 48 hours or more, and then Haze (%) was measured in accordance with ISO 14782 using Haze Guard i [manufactured by BYK Additives & Instruments].

[0098] <Feedability> Weighed 20 g of an olefin resin composition obtained by blending an olefin resin, a nucleating agent, water or a polyol compound, a phenolic antioxidant, a phosphorus antioxidant, and calcium stearate salt with a Henschel mixer, and put this into the feeder of a powder measurement evaluation apparatus (Multi-tester MT-02, manufactured by Seishin Enterprise Co., Ltd.), and measured the time until the olefin resin composition was discharged. When the time taken until the olefin resin composition was discharged was within 3.2 seconds, the feedability was evaluated as good, and when it exceeded 3.2 seconds, the feedability was evaluated as poor.

[0099] [Examples 1-1 to 1-6, Reference Examples 1-1 to 1-8, Comparative Examples 1-1 to 1-3] As the olefin resin, with respect to 100 parts by mass of homopolypropylene (melt flow rate 8 g / 10 min; conforming to ISO standard 1133, 2.16 kg × 230 °C), 0.05 part by mass of a phenolic antioxidant [tetrakis[methylene-3-(3’,5’-di-tert-butyl-4’-hydroxyphenyl)propionate]methane], 0.1 part by mass of a phosphorus-based antioxidant [tris(2,4-di-tert-butylphenyl)phosphite], 0.05 part by mass of calcium stearate, 0.1 part by mass of the nucleating agent described in Table 1, and water or a polyol compound in the compounding amounts described in Table 1 were mixed with a Henschel mixer at 1000 rpm × 1 min. Then, using a twin-screw extruder (TEX-28V; manufactured by Japan Steel Works, Ltd.), after melt-kneading at an extrusion temperature of 230 °C, it was pelletized. However, in Comparative Example 1-1, the nucleating agent, water, and polyol compound were not compounded, and in Comparative Example 1-2, water and the polyol compound were not compounded. The water content of the obtained pellets was in the vicinity of 0.008% by mass in all cases. The pellets were dried at 60 °C for 8 hours and then used for the evaluation of the crystallization temperature (°C) and flexural modulus (MPa). The water content of the dried pellets was approximately 0.0055% by mass.

[0100]

Table 1

[0101] 〔Reference Examples 2-1 to 2-6, Comparative Examples 2-1 to 2-2〕 As the olefin resin, to 100 parts by mass of homopolypropylene (melt flow rate: 8 g / 10 min; conforming to ISO standard 1133, 2.16 kg × 230 °C), 0.05 part by mass of a phenolic antioxidant [tetrakis[methylene-3-(3’,5’-di-tert-butyl-4’-hydroxyphenyl)propionate]methane], 0.1 part by mass of a phosphorus-based antioxidant [tris(2,4-di-tert-butylphenyl)phosphite], 0.05 part by mass of calcium stearate, 0.1 part by mass of a nucleating agent, and water or a polyol compound were added in the compounding amounts shown in Table 2. After mixing with a Henschel mixer at 1000 rpm for 1 min, melt-kneading was carried out at an extrusion temperature of 230 °C using a twin-screw extruder (TEX-28V; manufactured by Nippon Steel Works, Ltd.), and then pelletized. However, in Comparative Example 2-1, water and the polyol compound were not added. The water content of the obtained pellets was all in the vicinity of 0.008% by mass.

[0102] After drying the pellets at 60 °C for 8 hours, they were used for the evaluation of the crystallization temperature (°C), flexural modulus (MPa), and Izod impact strength (kJ / m 2 ). The water content of the dried pellets was approximately 0.0055% by mass. Furthermore, the feedability was evaluated using the olefin resin composition immediately after blending with a Henschel mixer.

[0103]

Table 2

[0104] 〔Reference Examples 3-1 to 3-2, Comparative Examples 3-1 to 3-4〕 As an olefin resin, to 100 parts by mass of homopolypropylene (melt flow rate 8 g / 10 min; conforming to ISO standard 1133, 2.16 kg × 230 °C), 0.05 part by mass of a phenolic antioxidant [tetrakis[methylene-3-(3’,5’-di-tert-butyl-4’-hydroxyphenyl)propionate]methane], 0.1 part by mass of a phosphorus-based antioxidant [tris(2,4-di-tert-butylphenyl)phosphite], 0.05 part by mass of calcium stearate salt, a nucleating agent and water were added in the compounding amounts shown in Table 3. After mixing at 1000 rpm for 1 min using a Henschel mixer, melt kneading was carried out at an extrusion temperature of 230 °C using a twin-screw extruder (TEX-28V; manufactured by Japan Steel Works, Ltd.), and then pelletized. The water content of the obtained pellets was in the vicinity of 0.008% by mass in all cases. After drying the pellets at 60 °C for 8 hours, they were used for the evaluation of the crystallization temperature (°C). The water content of the dried pellets was about 0.0055% by mass. These results are shown in Table 3 respectively.

[0105]

Table 3

[0106] 〔Reference Examples 4-1 to 4-2, Comparative Examples 4-1 to 4-4〕 As the olefin resin, based on 100 parts by mass of homopolypropylene (melt flow rate 8 g / 10 min; conforming to ISO standard 1133, 2.16 kg × 230 °C), 0.05 part by mass of a phenolic antioxidant [tetrakis[methylene-3-(3’,5’-di-tert-butyl-4’-hydroxyphenyl)propionate]methane], 0.1 part by mass of a phosphorus-based antioxidant [tris(2,4-di-tert-butylphenyl)phosphite], 0.05 part by mass of calcium stearate salt, a nucleating agent and water were added in the compounding amounts shown in Table 4. After mixing with a Henschel mixer at 1000 rpm for 1 min, melt-kneading was performed at an extrusion temperature of 230 °C using a twin-screw extruder (TEX-28V; manufactured by Japan Steel Works, Ltd.), and then pelletized. The moisture content of the obtained pellets was in the vicinity of 0.008% by mass in all cases. After drying the pellets at 60 °C for 8 hours, they were used for the evaluation of the flexural modulus (MPa). The moisture content of the dried pellets was approximately 0.0055% by mass. These results are shown in Table 4 respectively.

[0107]

Table 4

[0108] 〔Reference Examples 5-1 to 5-2, Comparative Examples 5-1 to 5-4〕 As the olefin resin, to 100 parts by mass of homopolypropylene (melt flow rate: 8 g / 10 min; conforming to ISO standard 1133, 2.16 kg × 230 °C), 0.05 part by mass of a phenolic antioxidant [tetrakis[methylene-3-(3’,5’-di-tert-butyl-4’-hydroxyphenyl)propionate]methane], 0.1 part by mass of a phosphorus-based antioxidant [tris(2,4-di-tert-butylphenyl)phosphite], 0.05 part by mass of calcium stearate, a nucleating agent and water were added in the compounding amounts shown in Table 5. After mixing with a Henschel mixer at 1000 rpm for 1 min, melt-kneading was performed using a twin-screw extruder (TEX-28V; manufactured by Japan Steel Works, Ltd.) at an extrusion temperature of 230 °C, and then pelletizing was carried out. The water content of the obtained pellets was in the vicinity of 0.008% by mass in all cases. After drying the pellets at 60 °C for 8 hours, they were used for the evaluation of HDT (°C). The water content of the dried pellets was about 0.0055% by mass. The evaluation method of HDT (°C) is as follows. These results are shown in Table 5 respectively.

[0109] <Heat Deflection Temperature under Load HDT (°C)> Using the pellets obtained by pelletizing, injection molding was carried out using an injection molding machine (EC100-2A; manufactured by Toshiba Machine Co., Ltd.) under the conditions of a mold temperature of 50 °C and a resin temperature of 200 °C to produce test pieces with dimensions of 80 mm × 10 mm × 4 mm. After standing in a constant temperature machine at 23 °C for 48 hours or more, HDT (°C) was measured in accordance with ISO75 (load: 0.45 MPa).

[0110]

Table 5

[0111] 〔Reference Examples 6-1 to 6-2, Comparative Examples 6-1 to 6-4〕 As the olefin resin, homopolypropylene (melt flow rate: 8 g / 10 mi n; compliant with ISO standard 1133 (2.16 kg × 230 °C) For 100 parts by mass, phenol -based antioxidant [tetrakis[methylene-3-(3’,5’-di-tert-butyl-4 ’-hydroxyphenyl)propionate]methane] 0.05 part by mass, phosphorus-based antioxidant [tris(2,4-di-tert-butylphenyl)phosphite] 0.1 part by mass, calcium stearate 0.05 part by mass, nucleating agent and water were added in the amounts shown in Table 6, and the mixture was mixed in a Henschel mixer at 1000 rpm for 1 min. Then, it was melt-kneaded using a twin-screw extruder (TEX-28V; manufactured by Japan Steel Works, Ltd.) at an extrusion temperature of 230 °C and then pelletized. The water content of the obtained pellets was all around 0.008% by mass. The pellets were dried at 60 °C for 8 h and then used for the evaluation of the semi-crystallization time (seconds). The water content of the dried pellets was about 0.0055% by mass. These results are shown in Table 6 respectively.

[0112] [Table 6] ※10: Semi-crystallization time when 0.3 part by mass of water was added ※11: Semi-crystallization time when no water was added ※12: Difference in semi-crystallization time between the case where 0.3 part by mass of water was added and the case where no water was added

[0113] [Reference Examples 7-1 to 7-2, Comparative Examples 7-1 to 7-4] As the olefin resin, for 100 parts by mass of homopolypropylene (melt flow rate 8 g / 10 min n; compliant with ISO standard 1133 (2.16 kg × 230 °C), phenol -based antioxidant [tetrakis[methylene-3-(3’,5’-di-tert-butyl-4 ’-hydroxyphenyl)propionate]methane] 0.05 part by mass, phosphorus-based antioxidant [Tris(2,4-di-tert-butylphenyl)phosphite] 0.1 part by mass, and stearic calcium phosphate 0.05 part by mass, and the nucleating agent and water described in Table 7 were blended in the amounts described in Table 7, and mixed with a Henschel mixer at 1000 rpm for 1 minute. Then, using a twin-screw extruder (TEX- 28V; manufactured by Nippon Steel Works, Ltd.), melt-kneaded at an extrusion temperature of 230 °C, and then pelletized. The water content of the pellets obtained by pelletization was all around 0.008% by mass. After drying the pellets at 60 °C for 8 hours, they were used for the evaluation of Haze (%). The water content of the dried pellets was about 0.0055% by mass. These results are shown in Table 7 respectively.

[0114]

Table 7

[0115] 〔Reference Example 8〕 ​​​​As the olefin resin, 60 parts by mass of "Novatec PP BC03B" (olefin block copolymer, melt flow rate 30 g / 10 min; compliant with ISO standard 1133, 2.16 kg × 230 °C) manufactured by Japan Polypropylene Corporation, 20 parts by mass of an olefin elastomer (product name "Engage 8200" manufactured by Dow Chemical Company), 20 parts by mass of a filler (product name "Crown Talc PP" manufactured by Matsumura Sangyo Co., Ltd.), 0.05 parts by mass of a phenolic antioxidant [tetrakis[methylene-3-(3’,5’-di-tert-butyl-4’-hydroxyphenyl)propionate]methane], 0.1 parts by mass of a phosphorus antioxidant [tris(2,4-di-tert-butylphenyl)phosphite], 0.05 parts by mass of calcium stearate, 0.3 parts by mass of a hindered amine compound (Adekastab LA-81), 0.1 parts by mass of Compound 1 and 0.3 parts by mass of water were mixed in a Henschel mixer at 1000 rpm for 1 min, and then melt-kneaded at an extrusion temperature of 230 °C using a twin-screw extruder (TEX-28V; manufactured by Japan Steel Works, Ltd.), and then pelletized. The water content of the obtained pellets was in the vicinity of 0.008% by mass. The pellets were dried at 60 °C for 8 hours and then injection-molded at 230 °C to obtain a test piece with a thickness of 2 mm. The water content of the dried pellets was about 0.0055% by mass. The obtained test piece had little coloring and excellent weather resistance, and had good physical properties such as flexural modulus and crystallization temperature. The olefin resin composition of the present invention can be suitably used in automotive materials.

[0116] 〔Reference Example 9〕 As the olefin resin, to 100 parts by mass of polypropylene with a melt flow rate of 3 g / 10 min, 0.05 part by mass of a phenolic antioxidant [tetrakis[methylene-3-(3’,5’-di-tert-butyl-4’-hydroxyphenyl)propionate]methane], 0.1 part by mass of a phosphorus-based antioxidant [tris(2,4-di-tert-butylphenyl)phosphite], 0.05 part by mass of calcium stearate, 0.05 part by mass of Compound 1 and 0.3 part by mass of water were mixed with a Henschel mixer at 1000 rpm for 1 min, and then melt-kneaded at an extrusion temperature of 230°C using a twin-screw extruder (TEX-28V; manufactured by Nippon Steel Works, Ltd.), and then pelletized. The water content of the obtained pellets was in the vicinity of 0.008% by mass. After drying the pellets at 60°C for 8 hours, an extruded sheet was formed at 230°C to obtain a sheet with a thickness of 1 mm. The water content of the dried pellets was about 0.0055% by mass. The transparency and strength of the cup formed by thermoforming using the obtained sheet were good. The olefin resin composition of the present invention can be suitably used in packaging materials such as food containers and beverage containers.

[0117] [Examples 10-1 to 10-9, Comparative Examples 10-1 to 10-2] 100 parts by mass of the olefin resin "Prime Polypro R720" (olefin random copolymer, melt flow rate 12 g / 10 min; compliant with ISO standard 1133, 2.16 kg × 230 °C) manufactured by Prime Polymer Co., Ltd., 0.05 parts by mass of tetrakis[methylene-3-(3’,5’-di-tert-butyl-4’-hydroxyphenyl)propionate]methane as a phenolic antioxidant, 0.1 parts by mass of tris(2,4-di-tert-butylphenyl)phosphite as a phosphorus-based antioxidant, 0.05 parts by mass of calcium stearate, 0.1 parts by mass of the nucleating agent described in Table 8 as a nucleating agent, and the polyol compound described in Table 8 as an auxiliary agent were blended in the blending amount described in Table 8, and mixed at 1000 rpm × 1 min using a Henschel mixer. The obtained mixture was melt-kneaded at an extrusion temperature of 230 °C using a twin-screw extruder (TEX-28V; manufactured by Japan Steel Works, Ltd.), and then pelletized. However, in Comparative Example 10-1, the nucleating agent and the polyol compound were not blended, and in Comparative Example 10-2, the polyol compound was not blended. The obtained pellets were dried at 60 °C for 8 hours and then used for the evaluation of the crystallization temperature (°C).

[0118]

Table 8

[0119] From the above, it was confirmed that the olefin resin composition of the present invention has excellent crystallinity. Further, it was confirmed that according to the olefin resin composition of the present invention, a molded article having mechanical properties and transparency can be obtained.

Claims

1. comprising a nucleating agent and an auxiliary agent, wherein the nucleating agent has the following general formula (1), (In the general formula (1), R １ to R ４ represent an alkyl group having 1 to 6 carbon atoms, R ５ represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, n represents 1, and M represents lithium.) containing an aromatic phosphate metal salt represented by the formula: wherein the auxiliary agent is at least one selected from the group consisting of glycols, sugar alcohols, mono-fatty acid esters of sugar alcohols, and polyvinyl alcohol, and the content of the auxiliary agent with respect to 100 parts by mass of the nucleating agent is 1 to 10,000 parts by mass. A nucleating agent composition characterized by that.

2. comprising an olefin resin, a nucleating agent and an auxiliary agent, wherein the nucleating agent has the following general formula (1), (In the general formula (1), R １ ~R ４ represents an alkyl group having 1 to 6 carbon atoms, R ５ represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, n represents 1, and M represents lithium.) contains an aromatic phosphate metal salt represented by the formula, and the auxiliary agent is at least one selected from the group consisting of glycols, sugar alcohols, mono-fatty acid esters of sugar alcohols, and polyvinyl alcohol, An olefin resin composition, characterized in that it contains 0.001 to 5 parts by mass of the nucleating agent and 0.003 to 10 parts by mass of the auxiliary agent with respect to 100 parts by mass of the olefin resin.

3. A molded article, characterized in that it is formed by molding the olefin resin composition according to Claim 2.

4. a preparation step of preparing an olefin resin not containing a nucleating agent component; a compounding step of compounding a nucleating agent and an auxiliary agent into the olefin resin not containing the nucleating agent component prepared in the preparation step to obtain an olefin resin compound, wherein the nucleating agent has the following general formula (1), (In the general formula (1), R １ to R ４ represent an alkyl group having 1 to 6 carbon atoms, R ５ represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, n represents 1, and M represents lithium.) containing an aromatic phosphate metal salt represented by the auxiliary agent is at least one selected from the group consisting of glycols, sugar alcohols, mono-fatty acid esters of sugar alcohols, and polyvinyl alcohol; A method for producing an olefin resin composition, characterized in that in the compounding step, 0.001 to 5 parts by mass of the nucleating agent and 0.003 to 10 parts by mass of the auxiliary agent are compounded with respect to 100 parts by mass of the olefin resin not containing the nucleating agent component.

5. The method for producing an olefin resin composition according to Claim 4, further comprising a melt-kneading step of melt-kneading the olefin resin compound obtained in the compounding step to obtain an olefin resin composition.

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