Resin composition for automobile parts, molded article, and automobile part

Abstract

To provide a resin composition for automobile parts, a molded article, and an automobile part, which exhibit excellent properties.SOLUTION: A resin composition for automobile parts comprises a synthetic resin and a nucleating agent. The nucleating agent is at least one selected from a group of compounds containing a monovalent group represented by the general formula (1) in the figure. (In the general formula (1), X represents a divalent group, Ar1 and Ar2 each independently represent a phenyl group optionally having a substituent, and * represents a site bonding to another atom.)SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a resin composition for automobile parts (hereinafter also simply referred to as "resin composition"), a molded article obtained by molding the same, and an automobile part. [Background technology]

[0002] In recent years, there has been a strong demand for lighter automobiles in order to reduce carbon dioxide emissions. Lighter electric vehicles are also desired because lighter weight improves driving distance. To reduce the weight of these automobiles (including electric vehicles), synthetic resins have been used as materials for automobile parts. Among these, polyolefin resins such as polypropylene resins are widely used not only for their light weight but also for their properties (Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-183280 [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-207062 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional automobile parts made of synthetic resins have insufficient and unsatisfactory properties. Therefore, an object of the present invention is to provide a resin composition for automobile parts, which has improved synthetic resin properties, and a molded article and automobile part obtained by molding the same. [Means for solving the problem]

[0005] As a result of intensive research into solving the above problems, the present inventors have found that the above problems can be solved by using a compound having a specific structure as a nucleating agent, and have thus completed the present invention.

[0006] That is, the resin composition for automobile parts of the present invention is a resin composition for automobile parts containing a synthetic resin and a nucleating agent, characterized in that the nucleating agent is one or more compounds selected from the group of compounds containing a monovalent group represented by the following general formula (1):

[0007] [ka]

[0008] (In the general formula (1), X represents a divalent group, and Ar 1 and Ar 2 each independently represents an unsubstituted or substituted phenyl group, and * represents a bonding site with another atom.)

[0009] The resin composition for automobile parts of the present invention is characterized in that the compound containing a monovalent group represented by the general formula (1) is represented by the following general formula (2):

[0010] [ka]

[0011] (In the general formula (2), X represents a divalent group, and Ar 1 and Ar 2 each independently represents an unsubstituted or substituted phenyl group; W 1 and W 2 each independently represents an unsubstituted or substituted phenyloxy group, or a monovalent group represented by the general formula (1).

[0012] Furthermore, the resin composition for automobile parts of the present invention preferably contains one or more other nucleating agents in addition to one or more nucleating agents selected from the group of compounds containing a monovalent group represented by the general formula (1), and it is more preferable that the other nucleating agents include one or more selected from the group of compounds represented by the following general formula (7):

[0013] [ka]

[0014] (In general formula (7), R 13 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms. 14 ~R 17 each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms, or R 14 and R 15 or R 16 and R 17 are linked together to form an alkylene group having 3 to 6 carbon atoms or an alkylenedioxy group having 1 to 4 carbon atoms. Z represents a single bond, a -CH(OH)- group, or a -CH(OH)CH(OH)- group.

[0015] The molded article of the present invention is obtained by molding the resin composition for automobile parts of the present invention.

[0016] The automobile part of the present invention is obtained by molding the resin composition for automobile parts of the present invention. [Effects of the Invention]

[0017] According to the present invention, it is possible to provide a resin composition for automobile parts having improved synthetic resin properties, a molded article having improved properties, and an automobile part having improved properties. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, embodiments of the present invention will be described in detail.

[0019] <Resin composition for automobile parts> First, the resin composition for automobile parts of the present invention will be described. The resin composition for automobile parts of the present invention contains a synthetic resin and, as a nucleating agent, a compound containing a monovalent group represented by the following general formula (1).

[0020] [ka]

[0021] (In the general formula (1), X represents a divalent group, and Ar 1 and Ar 2 each independently represents an unsubstituted or substituted phenyl group, and * represents a bonding site with another atom.)

[0022] The resin composition for automobile parts of this embodiment has improved properties of synthetic resins.

[0023] (synthetic resin) Examples of synthetic resins contained in the resin composition for automobile parts of this embodiment include thermoplastic resins and thermosetting resins.

[0024] Examples of thermoplastic resins include crystalline resins such as polyolefin resins, polyamide resins, polyester resins, polyacetal resins, polylactic acid, and polyphenylene sulfide; amorphous resins such as polycarbonate resins, styrene resins, acrylic resins, urethane resins, halogen-containing resins, petroleum resins, coumarone resins, polyvinyl alcohol, polyvinyl acetate, and polyphenylene oxide; thermoplastic elastomers; and carbon fiber reinforced thermoplastic resins (CFRTP).

[0025] Examples of thermosetting resins include phenol resin, urea resin, melamine resin, epoxy resin, unsaturated polyester resin, synthetic rubber, and carbon fiber reinforced plastic (CFRP).

[0026] The synthetic resin may be one type alone or two or more types in combination, and may be a copolymer or a polymer alloy.

[0027] In the resin composition for automobile parts of this embodiment, the synthetic resin is preferably a thermoplastic resin, more preferably a crystalline resin, and even more preferably contains a polyolefin-based resin.

[0028] Examples of polyolefin-based resins include polyethylene-based resins such as low-density polyethylene, linear low-density polyethylene, high-density polyethylene, cross-linked polyethylene, and ultra-high molecular weight polyethylene; polypropylene-based resins such as homopolypropylene, random copolymer polypropylene, block copolymer polypropylene, impact copolymer polypropylene, high-impact copolymer polypropylene, and maleic anhydride-modified polypropylene; α-olefin polymers such as polybutene-1, cycloolefin polymer, poly-3-methyl-1-butene, poly-3-methyl-1-pentene, and poly-4-methyl-1-pentene; and α-olefin copolymers such as ethylene-methyl methacrylate copolymer and ethylene-vinyl acetate copolymer. From the viewpoint of improving the heat resistance of the resin composition, in the resin composition for automotive parts of this embodiment, the polyolefin-based resin preferably contains at least one selected from the group consisting of polyethylene-based resins and polypropylene-based resins, and particularly preferably contains a polypropylene-based resin. From the viewpoint of improving the transparency of molded articles made from the resin composition, random copolymer polypropylene is particularly preferred as the polypropylene-based resin. The molecular weight, degree of polymerization, density, softening point, proportion of solvent-insoluble matter, degree of stereoregularity, presence or absence of catalyst residue, types and blending ratios of raw material monomers, type of catalyst used in polymerization (e.g., Ziegler catalyst, metallocene catalyst, etc.), etc. of the polyolefin resin are not particularly limited and are selected appropriately.

[0029] In the resin composition for automotive parts of this embodiment, the synthetic resin preferably contains an elastomer. In this case, molded articles obtained from the resin composition have excellent impact resistance. Examples of elastomers include synthetic rubbers such as isoprene rubber, butadiene rubber, acrylonitrile-butadiene copolymer rubber, styrene-butadiene copolymer rubber, fluororubber, and silicone rubber, as well as thermoplastic elastomers such as polyolefin-based thermoplastic elastomers, polystyrene-based thermoplastic elastomers, polyvinyl chloride-based thermoplastic elastomers, polyurethane-based thermoplastic elastomers, polyester-based thermoplastic elastomers, and polyamide-based thermoplastic elastomers. Among these, thermoplastic elastomers are preferred from the viewpoints of improving the processability of the resin composition and reducing the weight of molded articles obtained by molding the resin composition. Furthermore, among thermoplastic elastomers, polyolefin-based thermoplastic elastomers are particularly preferred. In the resin composition for automotive parts of the present embodiment, when the synthetic resin contains an elastomer, the content of the elastomer can be, for example, 5 to 60 mass % of the total synthetic resin, preferably 10 to 50 mass %, and more preferably 15 to 45 mass %.

[0030] In the resin composition for automobile parts of this embodiment, the synthetic resin may contain recycled resin.

[0031] Recycled resins are resins obtained by crushing synthetic resin molded articles for reuse. Examples of recycled resins include post-consumer recycled (PCR) resins, post-industrial recycled (PIR) resins, and in-process crushed recycled (regrind) resins. In the resin composition for automotive parts of this embodiment, the recycled resin preferably comprises at least one resin selected from the group consisting of PCR high-density polyethylene resin, PIR high-density polyethylene resin, regrind high-density polyethylene resin, PCR linear low-density polyethylene resin, PIR linear low-density polyethylene resin, regrind linear low-density polyethylene resin, PCR low-density polyethylene resin, PIR low-density polyethylene resin, regrind low-density polyethylene resin, PCR polypropylene resin, PIR polypropylene resin, and regrind polypropylene resin. More preferably, the recycled resin comprises at least one resin selected from the group consisting of PCR high-density polyethylene resin, PIR high-density polyethylene resin, regrind high-density polyethylene resin, PCR polypropylene resin, PIR polypropylene resin, and regrind polypropylene resin. Even more preferably, the recycled resin comprises at least one resin selected from the group consisting of PCR high-density polyethylene resin, PIR high-density polyethylene resin, PCR polypropylene resin, and PIR polypropylene resin.

[0032] In the resin composition for automotive parts of this embodiment, when the synthetic resin contains a recycled resin, the content of the recycled resin can be, for example, 5% by mass or more of the total synthetic resin, and the content of the recycled resin is preferably 5 to 100% by mass, more preferably 10 to 90% by mass, and even more preferably 20 to 80% by mass of the total synthetic resin.

[0033] In the resin composition for automobile parts in this embodiment, the synthetic resin may be obtained from raw material monomers derived from fossil fuels, or may be obtained from raw material monomers derived from biomass.

[0034] Further examples of thermoplastic resins that can be used in the resin composition for automobile parts in this embodiment include halogen-containing resins such as polyvinyl chloride, polyvinylidene chloride, chlorinated polyethylene, chlorinated polypropylene, polyvinylidene fluoride, chlorinated rubber, vinyl chloride-vinyl acetate copolymer, vinyl chloride-ethylene copolymer, vinyl chloride-vinylidene chloride copolymer, vinyl chloride-vinylidene chloride-vinyl acetate terpolymer, vinyl chloride-acrylic acid ester copolymer, vinyl chloride-maleic acid ester copolymer, and vinyl chloride-cyclohexylmaleimide copolymer; polystyrene, acrylic resin, copolymers of styrene and / or α-methylstyrene with other monomers (e.g., maleic anhydride, phenylmaleimide, methyl methacrylate, butadiene, acrylonitrile, etc.) (e.g., AS resin, ABS (acrylonitrile butadiene styrene copolymer) resin, ACS resin, SBS resin, MBS resin, heat-resistant ABS resin, etc.); polymethyl methacrylate, polyvinyl formal, and polyvinyl butyral. aromatic polyesters such as polyalkylene terephthalates such as polyethylene terephthalate, polybutylene terephthalate, and polycyclohexanedimethylene terephthalate, polyalkylene naphthalates such as polyethylene naphthalate and polybutylene naphthalate, and linear polyesters such as polytetramethylene terephthalate; degradable aliphatic polyesters such as polyhydroxybutyrate, polycaprolactone, polybutylene succinate, polyethylene succinate, polymalic acid, polyglycolic acid, polydioxane, and poly(2-oxetanone); polyamides such as polycaprolactam and polyhexamethylene adipamide, polycarbonate, polycarbonate / ABS resin, branched polycarbonate, polyacetal, polyurethane, cellulose resin, polyimide resin, polysulfone, polyphenylene ether, polyether ketone, polyether ether ketone, polyethersulfone, polyarylate resin, polyphthalamide, polyarylamide, and liquid crystal polymer.

[0035] (Nucleating agent: a compound containing a monovalent group represented by general formula (1)) As described above, the resin composition for automobile parts of the present embodiment contains, as a nucleating agent, a compound containing a monovalent group represented by the following general formula (1).

[0036] [ka] (In the general formula (1), X represents a divalent group, and Ar 1 and Ar 2 each independently represents an unsubstituted or substituted phenyl group, and * represents a bonding site with another atom.)

[0037] Examples of compounds containing a monovalent group represented by general formula (1) include compounds represented by the following general formula (2), oligomers or polymers represented by the following general formula (4), and dendrimers represented by the following general formula (8). Among these, compounds represented by general formula (2) are preferred. Furthermore, compounds containing a monovalent group represented by general formula (1) may be oligomers or polymers represented by general formula (4).

[0038] [ka]

[0039] In the general formula (2), X represents a divalent group, Ar 1 and Ar 2 each independently represents an unsubstituted or substituted phenyl group; W 1 and W 2 each independently represents an unsubstituted or substituted phenyloxy group, or a monovalent group represented by the above general formula (1).

[0040] [ka]

[0041] Here, in the general formula (4), X 1 and X 2 each independently represents a divalent group, Ar 1 , Ar2 , Ar 5 and Ar 6 each independently represents an unsubstituted or substituted phenyl group; W 3 represents an unsubstituted or substituted phenyloxy group, or a monovalent group represented by the above general formula (1), and n represents an integer of 1 or more.

[0042] In the general formula (4), n may be, for example, 500 or less, preferably 100 or less, more preferably 50 or less, even more preferably 10 or less, and even more preferably 5 or less. Also, n is preferably 2 or more. Furthermore, n is particularly preferably 2. Also, in the general formula (4), W 3 is preferably an unsubstituted or substituted phenyloxy group.

[0043] [ka]

[0044] In the general formula (8), X represents a divalent group, and Ar 1 and Ar 2 each independently represents an unsubstituted or substituted phenyl group.

[0045] Examples of the compound represented by general formula (2) include a compound represented by the following general formula (3), a compound represented by the following general formula (9), and a compound represented by the following general formula (10). Among these, the compound represented by general formula (3) is preferred.

[0046] [ka]

[0047] In the general formula (3), X represents a divalent group, Ar 1 , Ar 2 , Ar 3 and Ar 4each independently represents an unsubstituted or substituted phenyl group.

[0048] [ka]

[0049] Here, in the general formula (9), X 3 and X 4 each independently represents a divalent group, Ar 1 , Ar 2 , Ar 7 , Ar 8 and Ar 9 each independently represents an unsubstituted or substituted phenyl group.

[0050] [ka]

[0051] Here, in the general formula (10), X 5 , X 6 and X 7 each independently represents a divalent group, Ar 1 , Ar 2 , Ar 10 , Ar 11 , Ar 12 and Ar 13 each independently represents an unsubstituted or substituted phenyl group.

[0052] X and X 1 ~X 7Examples of the alkylene group include alkylene groups such as methylene, ethylene, propylene, and butylene, alkylidene groups such as ethylidene, propylidene, and butylidene, arylene groups such as phenylene, naphthylene, anthracylene, phenanthrylene, biphenylylene, and terphenylylene, alkylenearylene groups such as methylenephenylene and methylenebiphenylylene, alkylenearylenealkylene groups such as methylenephenylenemethylene and methylenebiphenylenemethylene, arylenealkylenearylene groups such as phenylenemethylenephenylene and biphenylylenemethylenebiphenylylene, and arylenealkylidenearylene groups such as phenyleneethylidenephenylene and phenylenemethylethylidenephenylene. These may be unsubstituted or may have a substituent.

[0053] X and X 1 ~X 7 When has a substituent, examples of the substituent include an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkylcarbonyl group having 2 to 11 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, an arylcarbonyl group having 7 to 21 carbon atoms, a heterocyclic group having 2 to 20 carbon atoms, an amino group, an aminocarbonyl group, a halogen atom, a hydroxy group, a nitro group, a cyano group, a formyl group, a carboxy group, a sulfo group, a sulfonamide group, etc. Here, the carboxy group and the sulfo group may form a salt.

[0054] Examples of the alkyl group having 1 to 10 carbon atoms include linear alkyl groups such as methyl, ethyl, n-propyl, n-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl, and n-decyl groups; branched alkyl groups such as isopropyl, isobutyl, sec-butyl, tert-butyl, isopentyl, neopentyl, tert-amyl, 2-heptyl, tert-heptyl, tert-octyl, isononyl, and isodecyl groups; and cyclic alkyl groups such as cyclopentyl, cyclohexyl, cyclooctyl, and adamantyl groups.

[0055] Examples of the alkoxy group having 1 to 10 carbon atoms include groups having a structure in which the above alkyl group having 1 to 10 carbon atoms is bonded to an oxygen atom.

[0056] Examples of the alkylcarbonyl group having 2 to 11 carbon atoms include groups having a structure in which the above alkyl group having 1 to 10 carbon atoms is bonded to a carbonyl group.

[0057] Examples of the aryl group having 6 to 20 carbon atoms include unsubstituted aryl groups such as a phenyl group, an o-biphenylyl group, an m-biphenylyl group, a p-biphenylyl group, an α-naphthyl group, a β-naphthyl group, a 1-anthryl group, a 2-anthryl group, a 9-anthryl group, a 1-phenanthryl group, a 2-phenanthryl group, a 3-phenanthryl group, a 4-phenanthryl group, and a 9-phenanthryl group, and aryl groups having a substituent such as a p-methylphenyl group, an o-methylphenyl group, a p-tert-butylphenyl group, a p-methoxyphenyl group, a p-chlorophenyl group, a p-nitrophenyl group, and a p-cyanophenyl group.

[0058] Examples of the aryloxy group having 6 to 20 carbon atoms include groups having a structure in which the above-mentioned aryl group having 6 to 20 carbon atoms is bonded to an oxygen atom.

[0059] Examples of the arylcarbonyl group having 7 to 21 carbon atoms include groups having a structure in which the above-mentioned aryl group having 6 to 20 carbon atoms is bonded to a carbonyl group.

[0060] Examples of the heterocyclic group having 2 to 20 carbon atoms include a pyridyl group, a pyrimidyl group, a furyl group, a thienyl group, a tetrahydrofuryl group, a dioxolanyl group, a benzoxazol-2-yl group, a tetrahydropyranyl group, a pyrrolidyl group, an imidazolidyl group, a pyrazolidyl group, a thiazolidyl group, an isothiazolidyl group, an oxazolidyl group, an isoxazolidyl group, a piperidyl group, a piperazyl group, and a morpholinyl group.

[0061] The amino group is -NA 1 A 2 where A is a group having the structure 1 and A 2 each independently represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 20 carbon atoms, or the like. 1 and A 2 may be linked to form a ring. Examples of the alkyl group having 1 to 10 carbon atoms and the aryl group having 6 to 20 carbon atoms include the same groups as those exemplified as the substituent when X has a substituent.

[0062] Examples of the aminocarbonyl group include groups having a structure in which the above-mentioned amino group is bonded to a carbonyl group.

[0063] Examples of halogen atoms include fluorine, chlorine, bromine, and iodine.

[0064] Ar 1 ~Ar 13 When is a substituted phenyl group, the substituents include X and X 1 ~X 7 When has a substituent, examples of the substituent include the same as those exemplified above.

[0065] Also, W 1 ~W 3When X is a substituted phenyloxy group, X and X 1 ~X 7 When has a substituent, examples of the substituent include the same as those exemplified above.

[0066] In the compound containing the monovalent group represented by general formula (1) of this embodiment, X is preferably a group represented by the following general formula (5) or (6), and more preferably a group represented by the following general formula (6).

[0067] [ka]

[0068] [ka]

[0069] In the general formulas (5) and (6), ** represents the site of bonding to the oxygen atom, and R 1 ~R 12 each independently represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or a halogen atom, and Y represents a single bond, an oxygen atom, a sulfur atom, a sulfonyl group, or an unsubstituted or substituted alkanediyl group.

[0070] In addition, in the compound containing the monovalent group represented by general formula (1) of this embodiment, X 1 and X 2 is preferably a group represented by the above general formula (5) or (6), and more preferably a group represented by the above general formula (6).

[0071] Furthermore, in the compound containing the monovalent group represented by general formula (1) of this embodiment, X 3 ~X 7 is preferably a group represented by the above general formula (5) or (6), and more preferably a group represented by the above general formula (6).

[0072] R1 ~R 12 Examples of the alkyl group having 1 to 10 carbon atoms, the alkoxy group having 1 to 10 carbon atoms, and the halogen atom represented by the formula (I) include the same groups as those exemplified as the substituent when X has a substituent.

[0073] Examples of the alkanediyl group represented by Y include alkylene groups such as methylene, ethylene, propylene, and butylene, and alkylidene groups such as ethylidene, propan-1-ylidene, propan-2-ylidene, butan-1-ylidene, butan-2-ylidene, and cyclohexylidene. The number of carbon atoms in the alkanediyl group may be, for example, 1 to 10, and preferably 1 to 6. When the alkanediyl group has a substituent, examples of the substituent include the same as those exemplified as the substituent when X has a substituent.

[0074] In the compound containing the monovalent group represented by general formula (1) of this embodiment, X and X 1 ~X 7 is a group represented by general formula (5), X and X 1 ~X 7 is preferably a group represented by the following general formula (5'). 1 ~X 7 is a group represented by general formula (6), X and X 1 ~X 7 is preferably a group represented by the following general formula (6'): 1 ~R 12 is preferably a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and more preferably a hydrogen atom. Furthermore, Y is preferably a single bond. In the compound of this embodiment, X and X 1 ~X 7 may be a group represented by general formula (5), and Y may be a single bond.

[0075] [ka]

[0076] [ka]

[0077] In the compound containing a monovalent group represented by general formula (1) of this embodiment, Ar 1 ~Ar 13 are 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, 2-ethylphenyl, 3-ethylphenyl, 4-ethylphenyl, 2-n-propylphenyl, 3-n-propylphenyl, 4-n-propylphenyl, 2-t-butylphenyl, 3-t-butylphenyl, 4-t-butylphenyl, 2,3-dimethylphenyl, 3,4-dimethylphenyl, 2,3-dichlorophenyl, 3,4-dichlorophenyl, 2-cyclohexylphenyl, 3-cyclohexylphenyl Preferably, the phenyl group is a 4-cyclohexylphenyl group, a 2-biphenylyl group, a 3-biphenylyl group, or a 4-biphenylyl group, more preferably a 4-ethylphenyl group, a 4-n-propylphenyl group, a 4-t-butylphenyl group, a 3,4-dimethylphenyl group, a 3,4-dichlorophenyl group, a 4-cyclohexylphenyl group, or a 4-biphenylyl group, even more preferably a 4-cyclohexylphenyl group or a 4-biphenylyl group, and particularly preferably a 4-cyclohexylphenyl group.

[0078] Specific examples of the compound containing a monovalent group represented by general formula (1) include the following compounds, but the compound containing a monovalent group represented by general formula (1) of the present embodiment is not limited to these specific examples.

[0079] [ka]

[0080] [ka]

[0081] [ka]

[0082] [ka]

[0083] [ka]

[0084] [ka]

[0085] The compound containing the monovalent group represented by general formula (1) can be produced by a known method such as the method described in WO 2022 / 039244.

[0086] In the resin composition of this embodiment, the content of the compound containing a monovalent group represented by general formula (1) can be, for example, 0.001 to 10 parts by mass relative to 100 parts by mass of synthetic resin. From the viewpoint of obtaining a resin composition with even better crystallinity and sufficiently suppressing the occurrence of bloom, the content of the compound containing a monovalent group represented by general formula (1) is preferably 0.002 to 5 parts by mass relative to 100 parts by mass of synthetic resin, more preferably 0.003 to 3 parts by mass, even more preferably 0.005 to 1 part by mass, still more preferably 0.01 to 0.5 parts by mass, even more preferably 0.02 to 0.2 parts by mass, and particularly preferably 0.03 to 0.1 parts by mass.

[0087] The resin composition for automotive parts of this embodiment preferably contains another nucleating agent in addition to the compound containing the monovalent group represented by the general formula (1). The other nucleating agent referred to here is a compound other than the compound containing the monovalent group represented by the general formula (1).

[0088] Other nucleating agents include, for example, compounds represented by the following general formula (7), aromatic phosphate metal salts such as sodium 2,2'-methylenebis(4,6-di-tert-butylphenyl)phosphate, lithium 2,2'-methylenebis(4,6-di-tert-butylphenyl)phosphate, dihydroxyaluminum 2,2'-methylenebis(4,6-di-tert-butylphenyl)phosphate, and hydroxyaluminum bis[2,2'-methylenebis(4,6-di-tert-butylphenyl)phosphate], sodium benzoate, aluminum 4-tert-butylbenzoate, sodium adipate, disodium bicyclo[2.2.1]heptane-2,3-dicarboxylate, and calcium Examples include metal salts of carboxylic acids such as cyclohexane-1,2-dicarboxylate, 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, and 1,3,5-tris[(2,2-dimethylpropanoylamino)]benzene, and 2,4,6-tri(aryloxy)-1,3,5-triazine compounds described in WO 2020 / 067144 pamphlet, other than compounds containing a monovalent group represented by general formula (1).

[0089] [ka]

[0090] Here, in the general formula (7), R 13 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms. 14 ~R 17 each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms, or R 14 and R 15 or R 16 and R 17are linked together to form an alkylene group having 3 to 6 carbon atoms or an alkylenedioxy group having 1 to 4 carbon atoms. Z represents a single bond, a -CH(OH)- group or a -CH(OH)CH(OH)- group.

[0091] R 13 ~R 17 an alkyl group having 1 to 10 carbon atoms represented by the formula: 14 ~R 17 and an alkoxy group having 1 to 10 carbon atoms represented by the formula: 14 ~R 17 Examples of the halogen atom represented by the formula (1) include the same as those exemplified as the substituent when X has a substituent in the above general formula (1). As the alkyl group having 1 to 10 carbon atoms, an alkyl group having 1 to 4 carbon atoms is preferred. Furthermore, as the alkoxy group having 1 to 10 carbon atoms, an alkoxy group having 1 to 4 carbon atoms is preferred.

[0092] In the general formula (7), examples of the alkylene group having 3 to 6 carbon atoms include a propylene group, a butylene group, a pentylene group, a hexylene group, etc. Furthermore, examples of the alkylenedioxy group having 1 to 4 carbon atoms include a methylenedioxy group, an ethylenedioxy group, a propylenedioxy group, a butylenedioxy group, etc.

[0093] In the synthetic resin additive composition of this embodiment, the compound represented by general formula (7) is R 13 ~R 17 are each independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and Z is preferably a -CH(OH)- group.

[0094] Specific examples of the compound represented by general formula (7) include dibenzylidene sorbitol, bis(p-methylbenzylidene) sorbitol, bis(p-ethylbenzylidene) sorbitol, bis(3,4-dimethylbenzylidene) sorbitol, 1,2,3-trideoxy-4,6:5,7-o-bis(4-propylbenzylidene) nonitol, etc. From the viewpoint of further improving the properties of the synthetic resin, among these, dibenzylidene sorbitol, bis(p-methylbenzylidene) sorbitol, bis(3,4-dimethylbenzylidene) sorbitol, and 1,2,3-trideoxy-4,6:5,7-o-bis(4-propylbenzylidene) nonitol are preferred, and bis(3,4-dimethylbenzylidene) sorbitol and 1,2,3-trideoxy-4,6:5,7-o-bis(4-propylbenzylidene) nonitol are more preferred.

[0095] The compound represented by the general formula (7) can be produced, for example, by dehydration condensation of an alditol compound such as sorbitol with an aryl aldehyde in the presence of an acid catalyst.

[0096] Among the compounds represented by general formula (7), commercially available ones include, for example, Gelall D (trade name), Gelall MD (trade name), Gelall DXR (trade name), Gelall E-200 (trade name), Gelall MD-LM30G (trade name), and RiKAFAST P1 (trade name), all manufactured by New Japan Chemical Co., Ltd.; and Milad 3988 (trade name), Milad 3988i (trade name), Milad NX-8000 (trade name), and Milad NX-8000J (trade name), all manufactured by Milliken & Company.

[0097] In the resin composition for automotive parts of the present embodiment, the other nucleating agent preferably includes at least one selected from the group consisting of an aromatic phosphate metal salt, a carboxylate metal salt, and a compound represented by general formula (7), and more preferably includes a compound represented by general formula (7).

[0098] When the resin composition for automobile parts of this embodiment contains another nucleating agent in addition to the compound containing a monovalent group represented by general formula (1) described above, the ratio B / C of the content B (parts by mass) of the compound containing a monovalent group represented by general formula (1) to the content C (parts by mass) of the other nucleating agent in the resin composition for automobile parts may be, for example, 1 / 99 to 99 / 1. From the viewpoint of further improving the properties of the synthetic resin, the value of B / C is preferably 3 / 97 or more, and more preferably 5 / 95 or more. From the same viewpoint, the value of B / C is preferably 50 / 50 or less, and more preferably 40 / 60 or less.

[0099] The resin composition for automobile parts of this embodiment preferably further contains a filler, in which case the mechanical properties of a molded article obtained by molding the resin composition will be excellent.

[0100] Examples of fillers include talc, mica, calcium carbonate, calcium oxide, calcium hydroxide, magnesium carbonate, magnesium hydroxide, magnesium oxide, magnesium sulfate, aluminum hydroxide, barium sulfate, glass powder, glass fiber, clay, dolomite, silica, alumina, potassium titanate whiskers, wollastonite, and fibrous magnesium oxysulfate. The particle size (fiber diameter, fiber length, and aspect ratio for fibrous fillers) can be appropriately selected. Among these fillers, talc is particularly preferred due to its excellent rigidity-imparting effect and easy availability. Furthermore, fillers that have been surface-treated may be used as needed. When the resin composition for automotive parts of this embodiment contains a filler, the content of the filler can be, for example, 0.1 to 500 parts by mass per 100 parts by mass of the synthetic resin. From the viewpoint of further improving the mechanical properties of the synthetic resin, the content of the filler is preferably 1 to 100 parts by mass, more preferably 10 to 50 parts by mass, and even more preferably 15 to 30 parts by mass, per 100 parts by mass of the synthetic resin.

[0101] The resin composition for automotive parts of this embodiment preferably further contains a colorant. In this case, the molded product obtained by molding the resin composition has an excellent color tone. Examples of the colorant include pigments, dyes, and resin masterbatches containing these.

[0102] Specific examples of pigments include 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, and 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, white pigment, carbon black, dark gray pigment, gray pigment, beige pigment, light beige pigment, light gray pigment, green pigment, etc.

[0103] Specific examples of 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, and cyanine dyes.

[0104] When the resin composition for automobile parts of this embodiment contains a colorant, the content of the colorant is, for example, preferably 0.0001 to 5 parts by mass, and more preferably 0.001 to 3 parts by mass, per 100 parts by mass of the synthetic resin.

[0105] The resin composition for automobile parts of this embodiment may further contain one or more additives other than the compound containing the monovalent group represented by general formula (1) (hereinafter referred to as "other additives"), such as phenolic antioxidants, phosphorus-based antioxidants, sulfur-based antioxidants, other antioxidants, hindered amine compounds, ultraviolet absorbers, fatty acid metal salts, flame retardants, flame retardant aids, lubricants, hydrotalcites, antistatic agents, and fluorescent brighteners. The content of the other additives in the resin composition for automobile parts of this embodiment can be set within a range that does not impair the effects of the resin composition for automobile parts of this embodiment.

[0106] 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, and 2,2'-isobutylidenebis(4,6-dimethylphenol). Nyl)propionate, N,N'-hexane-1,6-diylbis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionamide], 2,2'-oxamido-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-hydroxybenzenepropanoic acid and C13-15 alkyl ester, 2,5-di-tert-amylhydroquinone, hindered phenol polymer (ADEKA POLYMER ADDITIVES EUROPE SAS) Trade name "AO.OH.98"), 2,2'-methylenebis[6-(1-methylcyclohexyl)-p-cresol], 2-tert-butyl-6-(3-tert-butyl-2-hydroxy5-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]-dioxaphophobin, hexamethylenebis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], bis[monoethyl(3,5-di-tert-butyl-4-hydroxybenzyl)phosphonate]calcium salt, 5,Reaction products of 7-bis(1,1-dimethylethyl)-3-hydroxy-2(3H)-benzofuranone with o-xylene, 2,6-di-tert-butyl-4-(4,6-bis(octylthio)-1,3,5-triazin-2-ylamino)phenol, DL-α-tocophenol (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 Nyl-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, thiodiethylenebis[(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)butylic 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-butylphenol), rt-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'-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-(3,5-dialkyl-4-hydroxyphenyl)propionic acid derivatives such as 3-(3,5-di-tert-butyl-4-hydroxy-5-methylphenyl)propionate, stearyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid amide, palmityl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid amide, myristyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid amide, and lauryl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid amide, etc.

[0107] Examples of phosphorus-based antioxidants include triphenyl phosphite, diisooctyl phosphite, heptakis(dipropylene glycol)triphosphite, triisodecyl phosphite, diphenyl isooctyl phosphite, diisooctylphenyl phosphite, diphenyl tridecyl phosphite, triisooctyl phosphite, trilauryl phosphite, diphenyl phosphite, tris(dipropylene glycol)phosphite, dioleylhydrogen phosphite, trilauryl trithiophosphite, and bis(tridecyl)phosphite. phosphite, tris(isodecyl)phosphite, tris(tridecyl)phosphite, diphenyldecylphosphite, dinonylphenylbis(nonylphenyl)phosphite, poly(dipropylene glycol)phenylphosphite, tetraphenyldipropylene glycol diphosphite, trisnonylphenylphosphite, 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-hydrochloride] (tridecyl) bisphenol A phosphite, octyl diphenyl phosphite, di(decyl) monophenyl phosphite, 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) isopropylidenediphenol diphosphite tetra(tridecyl)-4,4'-n-butylidenebis(2-tert-butyl-5-methylphenol)diphosphite, hexa(tridecyl)-1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butanetriphosphite, 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-butyldibenzo[d,f][1,3,2]dioxaphosphepin-6-yl)oxy]ethyl)amine, 3,9-bis(4-nonylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphespiro[5,5]undecane, 2,4,6-tri-tert-butyl Examples of suitable phosphates include phenyl-2-butyl-2-ethyl-1,3-propanediol phosphite, poly4,4'-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, and bis(2,4-dicumylphenyl)pentaerythritol diphosphite.

[0108] 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.

[0109] Other antioxidants include nitrone compounds such as N-benzyl-α-phenyl nitrone, N-ethyl-α-methyl nitrone, N-octyl-α-heptyl nitrone, N-lauryl-α-undecyl nitrone, N-tetradecyl-α-tridecyl nitrone, N-hexadecyl-α-pentadecyl nitrone, N-octyl-α-heptadecyl nitrone, N-hexadecyl-α-heptadecyl nitrone, N-octadecyl-α-pentadecyl nitrone, N-heptadecyl-α-heptadecyl nitrone, and N-octadecyl-α-heptadecyl nitrone; 3-arylbenzofuran-2(3H)-one, 3-(alkoxyphenyl)benzofuran-2-one, 3-(acyloxyphenyl)benzofuran-2(3H)-one; Examples of the benzofuran compounds include t-butyl-3-(3,4-dimethylphenyl)-benzofuran-2(3H)-one, 5,7-di-tert-butyl-3-(4-hydroxyphenyl)-benzofuran-2(3H)-one, 5,7-di-tert-butyl-3-{4-(2-hydroxyethoxy)phenyl}-benzofuran-2(3H)-one, 6-(2-(4-(5,7-di-tert-2-oxo-2,3-dihydrobenzofuran-3-yl)phenoxy)ethoxy)-6-oxohexyl-6-((6-hydroxyhexanoyl)oxy)hexanoate, and 5-di-tert-butyl-3-(4-((15-hydroxy-3,6,9,13-tetraoxapentadecyl)oxy)phenyl)benzofuran-2(3H)-one.

[0110] Examples of the hindered amine compound 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, biphenylsulfonyl ether ... 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 / diethyl succinate 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-triazine-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-ylamino]undecane, 1,6,11-tris[2,4-bis(N-butyl-N-(1,2,2,6,6-pentamethyl-4-piperidyl)amino-s-triazin-6-ylamino]undecane, 3,9-bis[1,1-dimethyl-2-{tris(2,2,Examples of the bis(1-undecyloxy-2,2,6,6-tetramethyl-4-piperidyloxycarbonyl)butylcarbonyloxy}ethyl)-2,4,8,10-tetraoxaspiro[5.5]undecane include 3,9-bis[1,1-dimethyl-2-{tris(1,2,2,6,6-pentamethyl-4-piperidyloxycarbonyl)butylcarbonyloxy}ethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane, bis(1-undecyloxy-2,2,6,6-tetramethylpiperidin-4-yl)carbonate, 2,2,6,6-tetramethyl-4-piperidyl hexadecanoate, and 2,2,6,6-tetramethyl-4-piperidyl octadecanoate.

[0111] Examples of the ultraviolet absorber include 2-hydroxybenzophenones such as 2,4-dihydroxybenzophenone and 5,5'-methylenebis(2-hydroxy-4-methoxybenzophenone); 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 esters 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) 2-(2-hydroxyphenyl)benzotriazoles such as 2-[2-hydroxy-3-tert-butyl-5-(3-methacryloyloxypropyl)phenyl]benzotriazole, 2-[2-hydroxy-4-(2-methacryloyloxymethyl)phenyl]benzotriazole, 2-[2-hydroxy-4-(3-methacryloyloxy-2-hydroxypropyl)phenyl]benzotriazole, and 2-[2-hydroxy-4-(3-methacryloyloxypropyl)phenyl]benzotriazole;Phenyl salicylate, resorcinol monobenzoate, 2,4-di-tert-butylphenyl-3,5-di-tert-butyl-4-hydroxybenzoate, octyl (3,5-di-tert-butyl-4-hydroxy)benzoate, dodecyl (3,5-di-tert-butyl-4-hydroxy)benzoate, tetradecyl (3,5-di-tert-butyl-4-hydroxy)benzoate, hexadecyl (3,5-di-tert-butyl-4-hydroxy)benzoate ) benzoates such as octadecyl (3,5-di-tert-butyl-4-hydroxy) benzoate, behenyl (3,5-di-tert-butyl-4-hydroxy) benzoate; substituted oxanilides such as 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 Acetates; 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-hexyloxyphenol, 2-(2-hydroxy-4-octoxyphenyl)-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-triazine-2- triazines such as 2-[4-(4,6-diphenyl-1,3,5-triazin-2-yl)-3-hydroxyphenoxy]ethyl]dodecanedioate; various metal salts or metal chelates, particularly nickel and chromium salts or chelates;

[0112] Examples of fatty acid metal salts include metal salts of fatty acids having 12 to 30 carbon atoms and containing linear or branched fatty acid residues. Examples of metal ions constituting fatty acid metal salts include sodium ions, potassium ions, lithium ions, dihydroxyaluminum ions, calcium ions, zinc ions, barium ions, magnesium ions, and hydroxyaluminum ions, with sodium ions, potassium ions, lithium ions, and calcium ions being preferred. Examples of fatty acids constituting fatty acid metal salts include lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, arachidonic acid, behenic acid, lignoceric acid, cerotic acid, montanic acid, and melissic acid, with myristic acid and stearic acid being preferred. The fatty acids constituting fatty acid metal salts may be those in which one or more hydrogen atoms of the fatty acid residue have been substituted with hydroxyl groups. Examples of such fatty acids include 12-hydroxystearic acid and 12-hydroxyoleic acid.

[0113] Examples of flame retardants include triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, cresyl-2,6-dixylenyl phosphate, resorcinol bis(diphenyl phosphate), (1-methylethylidene)-4,1-phenylenetetraphenyl diphosphate, 1,3-phenylenetetrakis(2,6-dimethylphenyl)phosphate, and products under the trade names "ADEKA STAB FP-500," "ADEKA STAB FP-600," and "ADEKA STAB FP-600" manufactured by ADEKA Corporation. Aromatic phosphate esters such as "Stab FP-800", phosphonate esters such as divinyl phenylphosphonate, diallyl phenylphosphonate, and 1-butenyl phenylphosphonate, phosphinate esters such as phenyl diphenylphosphinate, methyl diphenylphosphinate, and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide derivatives, phosphazene compounds such as bis(2-allylphenoxy)phosphazene and dicresylphosphazene, melamine phosphate, melamine pyrophosphate, and melamine polyphosphate amine, melam polyphosphate, ammonium polyphosphate, piperazine phosphate, piperazine pyrophosphate, piperazine polyphosphate, phosphorus-containing vinylbenzyl compounds, red phosphorus and other phosphorus-based flame retardants, magnesium hydroxide, aluminum hydroxide and other metal hydroxides, brominated bisphenol A type epoxy resin, brominated phenol novolac type epoxy resin, hexabromobenzene, pentabromotoluene, ethylene bis(pentabromophenyl), ethylene bistetrabromophthalimide, 1,2-dibromo-4-(1,2-dibromoethylene) Examples of suitable flame retardants include brominated flame retardants such as 2,4,6-tris(tribromophenoxy)-1,3,5-triazine, tribromophenylmaleimide, tribromophenyl acrylate, tribromophenyl methacrylate, tetrabromobisphenol A dimethacrylate, pentabromobenzyl acrylate, and brominated styrene. These flame retardants are preferably used in combination with anti-drip agents such as fluororesins, and flame retardant assistants such as polyhydric alcohols and hydrotalcite.

[0114] Examples of lubricants include fatty acid esters such as fatty acid methyl, fatty acid ethyl, ethylene glycol fatty acid monoesters, propylene glycol fatty acid monoesters, ethylene glycol fatty acid diesters, propylene glycol fatty acid diesters, glycerol fatty acid monoesters, glycerol fatty acid diesters, glycerol fatty acid triesters, pentaerythritol fatty acid monoesters, pentaerythritol fatty acid diesters, pentaerythritol fatty acid triesters, and pentaerythritol fatty acid tetraesters; fatty acid amides such as fatty acid monoamides, alkylenebisfatty acid amides, alkylol fatty acid amides, and N-alkyl fatty acid amides; fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, arachidonic acid, behenic acid, erucic acid, lignoceric acid, cerotic acid, montanic acid, melissic acid, 12-hydroxystearic acid, and ricinoleic acid; higher alcohols such as stearyl alcohol; and sugar alcohols such as mannitol.

[0115] Examples of hydrotalcites include complex salt compounds containing magnesium, aluminum, hydroxyl groups, carbonate groups, and optional crystal water, and they may be natural or synthetic. The crystal structure, particle shape, and particle size of the hydrotalcites are not particularly limited. Furthermore, the hydrotalcites may be those in which at least a portion of the magnesium or aluminum has been substituted with another metal such as an alkali metal or zinc, or those in which at least a portion of the hydroxyl groups or carbonate groups has been substituted with another anion group. Furthermore, the hydrotalcites may be those in which the crystal water has been dehydrated, and the surface may be coated with a higher fatty acid such as stearic acid, a higher fatty acid metal salt such as an alkali metal oleate, an organic sulfonic acid metal salt such as an alkali metal dodecylbenzenesulfonate, a higher fatty acid amide, a higher fatty acid ester, or a wax.

[0116] Examples of antistatic agents include low-molecular-weight antistatic agents such as nonionic, anionic, cationic, or amphoteric surfactants, and polymeric antistatic agents such as polymeric compounds. Nonionic surfactants include polyethylene glycol-based nonionic surfactants such as higher alcohol ethylene oxide adducts, fatty acid ethylene oxide adducts, higher alkylamine ethylene oxide adducts, and polyolefin glycol ethylene oxide adducts; polyhydric alcohol-based nonionic surfactants such as polyethylene oxide, glycerin fatty acid esters, pentaerythritol fatty acid esters, sorbitol or sorbitan fatty acid esters, polyhydric alcohol alkyl ethers, and alkanolamine fatty amides. Examples of anionic surfactants include carboxylates such as alkali metal salts of higher fatty acids; sulfate ester salts 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 ester salts 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 alkylaminopropionates, and betaine-type amphoteric surfactants such as higher alkyldimethylbetaine and higher alkyldihydroxyethylbetaine. Among these, anionic surfactants are preferred, and sulfonates such as alkylbenzenesulfonates, alkylsulfonates, and paraffin sulfonates are particularly preferred.

[0117] Examples of polymeric antistatic agents include ionomers and block polymers having polyethylene glycol as a hydrophilic moiety. Examples of ionomers include the ionomer described in JP 2010-132927 A. Examples of polymers having polyethylene glycol as a hydrophilic moiety include polyether ester amide described in JP 7-10989 A, polymers composed of polyolefin and polyethylene glycol described in U.S. Pat. No. 6,552,131 A, and polymers composed of polyester and polyethylene glycol described in JP 2016-023254 A.

[0118] Fluorescent brighteners are compounds that absorb ultraviolet light from sunlight or artificial light, convert it into violet-blue visible light, and radiate it to enhance the whiteness and blueness of molded articles through their fluorescent effect. Examples of fluorescent brighteners include the benzoxazole-based compound CI Fluorescent Brightener 184, the coumarin-based compound CI Fluorescent Brightener 52, and the diaminostilbene disulfonic acid-based compounds CI Fluorescent Brighteners 24, 85, and 71.

[0119] Furthermore, when a polyolefin resin is used, it is preferable to add a known neutralizing agent, if necessary, to neutralize residual catalyst in the polyolefin resin, within a range that does not impair the effects of the present invention. Examples of neutralizing agents include fatty acid metal salts such as calcium stearate, lithium stearate, and sodium stearate, fatty acid amide compounds such as ethylene bis(stearamide), ethylene bis(12-hydroxystearamide), and stearic acid amide, and hydrotalcites. These neutralizing agents may be used in combination.

[0120] The method for producing a resin composition for automobile parts may include a mixing step of mixing a synthetic resin with a compound containing a monovalent group represented by the general formula (1) above.

[0121] In the mixing step, the method for mixing the synthetic resin and the compound containing a monovalent group represented by general formula (1) is not particularly limited, and examples include a method in which the compound containing a monovalent group represented by general formula (1) and, if necessary, the other additives described above are added to the synthetic resin, and then mixed using a mixing device such as a tumbler mixer, FM mixer, mill roll, Banbury mixer, super mixer, etc. Furthermore, a masterbatch of the compound containing a monovalent group represented by general formula (1) and the synthetic resin may be produced in advance, and this masterbatch may be used.

[0122] The method for producing a resin composition for automotive parts may further include, in addition to the mixing step described above, a melt-kneading step in which the mixture obtained in the mixing step is melt-kneaded using a melt-kneading device such as a single-screw extruder or a twin-screw extruder. The melt-kneading temperature in the melt-kneading step may be, for example, 100 to 280°C. The method for producing a resin composition of this embodiment may also include a granulation step in which the mixture obtained in the melt-kneading step is granulated. The granulation method is not particularly limited, and examples include methods using a granulating device such as a pelletizer. The shape of the resin composition obtained by granulation is not particularly limited, and may be, for example, pellets. The method for producing a resin composition of this embodiment may also include adding a compound containing a monovalent group represented by general formula (1) and, if necessary, at least one of the other additives described above before or during polymerization of a synthetic resin monomer or oligomer, and then adding the remaining components to the resulting polymer.

[0123] <Molded products> Next, the molded article of the present invention will be described. The molded article of the present invention is obtained by molding the above-mentioned resin composition for automobile parts of the present invention.

[0124] Examples of molded articles include injection molded articles, fibers, flat yarns, biaxially oriented films, uniaxially oriented films, unoriented films, sheets, thermoforming molded articles, extrusion blow molded articles, injection blow molded articles, injection stretch blow molded articles, profile extrusion molded articles, and rotational molded articles.

[0125] The molding method for the molded article is not particularly limited, and examples thereof include injection molding, extrusion molding, blow molding, rotational molding, vacuum molding, inflation molding, calendar molding, slush molding, dip molding, and thermoforming.

[0126] The molded article of the present invention is suitable as an automobile part.

[0127] <Automotive parts> Next, the automobile part of the present invention will be described. The automobile part of the present invention is obtained by molding the resin composition for automobile parts of the present invention described above. In the present invention, parts for electric automobiles are also included in the automobile part.

[0128] Examples of automotive parts include automotive exterior parts, automotive interior parts, fuel tanks, engine parts, transmission parts, steering parts, suspension parts, bumper parts, battery-related parts, automotive electronic parts, automotive electrical equipment, brake parts, bracket parts, chassis parts, fuel cell parts, motor parts, airbag parts, transmission parts, in-vehicle camera parts, in-vehicle monitor parts, headlights, auxiliary headlights, signal lights, automotive instruments, automotive clocks, in-vehicle motor parts, automotive electric wires, automotive wire harnesses, automotive audio equipment, automotive seats, automotive air conditioners, automotive air conditioning equipment, radiator-related parts, and the like.

[0129] Among the automobile parts, preferred examples of automobile exterior parts include bumpers, radiator grilles, front grilles, front panels, fenders, pillars, pillar covers, door mirror stay covers, glass run channels, door mirror housings, lamp housings, wheel covers, spoilers, air spoilers, weather strips, window moldings, belt moldings, sunroofs, front end modules, door modules, back door modules, and outer panels.

[0130] Among the automobile parts, preferred automobile interior parts include, for example, instrument panels, door trim panels, pillar trims, door trims, pillar garnishes, package trays, rear trays, console boxes, and air conditioning ducts.

[0131] Further examples of automobile parts include engine cooling water tanks, room lamp covers, curl top covers, door moldings, roof side moldings, fillet moldings, rear lower bumpers, and the like.

[0132] The present invention is not limited to the above-described embodiments. The above-described embodiments are merely examples, and anything that has substantially the same configuration as the technical idea described in the claims of the present invention and that exhibits similar effects is included within the technical scope of the present invention. [Example]

[0133] The present invention will be explained in more detail below by way of examples, but the present invention is not limited to the following examples in any way.

[0134] The raw materials used in this example are as follows: (synthetic resin) Synthetic resin-1: Homopolypropylene (MFR (230°C, 2.16 kg) = 3 g / 10 min) Synthetic resin-2: Homopolypropylene (MFR (230°C, 2.16 kg) = 8 g / 10 min) Synthetic resin-3: Homopolypropylene (MFR (230°C, 2.16 kg) = 40 g / 10 min) Synthetic resin-4: Impact copolymer polypropylene (MFR (230°C, 2.16 kg) = 2 g / 10 min) Synthetic resin-5: Impact copolymer polypropylene (MFR (230°C, 2.16 kg) = 12 g / 10 min) Synthetic resin-6: Impact copolymer polypropylene (MFR (230°C, 2.16 kg) = 40 g / 10 min) Synthetic resin-7: Polyolefin thermoplastic elastomer, manufactured by Dow Chemical Company, product name "Engage 8200"

[0135] (filler) Filler-1: Talc

[0136] (coloring agent) Colorant-1: Carbon black

[0137] (Nucleating agent: a compound containing a monovalent group represented by general formula (1)) [ka]

[0138] (Other nucleating agents) Nucleating Agent 1: 1,2,3-Trideoxy-4,6:5,7-bis-o-((4-propylphenyl)methylene)-nonitol Nucleating Agent 2:1,3:2,4-Bis-o-(3,4-dimethylbenzylidene)-D-sorbitol Nucleating agent 3: Calcium cyclohexane-1,2-dicarboxylate

[0139] (antioxidant) Antioxidant-1: Pentaerythritol tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] Antioxidant-2: Tris(2,4-di-tert-butylphenyl)phosphite

[0140] (Neutralizer) Neutralizer-1: Calcium stearate Neutralizer-2: Hydrotalcite

[0141] [Examples 1 to 54, Comparative Examples 1 to 12] The resin compositions of each example and comparative example were mixed in the amounts (parts by mass) shown in Tables 1 to 6 below, and molded to obtain molded articles. The molded articles obtained were evaluated under the following conditions. The results are also shown in Tables 1 to 6.

[0142] <Molded product evaluation> The suitability of the resulting molded articles for use as automobile parts was evaluated according to the following criteria. Good: Excellent properties and suitable for automobile parts. ×: Poor properties and unsuitable for automobile parts.

[0143] [Table 1]

[0144] [Table 2]

[0145] [Table 3]

[0146] [Table 4]

[0147] [Table 5]

[0148] [Table 6]

[0149] As described above, the resin composition for automobile parts of the present invention can provide molded articles with improved properties and automobile parts with improved properties.

[0150] Examples of molded articles of the present invention that are automobile parts include bumpers, radiator grilles, front grilles, front panels, fenders, pillars, pillar covers, door mirror stay covers, glass run channels, door mirror housings, lamp housings, wheel covers, spoilers, air spoilers, weather strips, window moldings, belt moldings, sunroofs, front end modules, door modules, back door modules, outer panels, instrument panels, door trim panels, pillar trims, door trims, pillar garnishes, package trays, rear trays, console boxes, air conditioning ducts, engine cooling water tanks, These include room lamp covers, curl top covers, door moldings, roof side moldings, fillet moldings, rear lower bumpers, fuel tanks, engine parts, transmission parts, steering parts, suspension parts, bumper parts, battery-related parts, automotive electronic parts, automotive electrical equipment, brake parts, bracket parts, chassis parts, fuel cell parts, motor parts, airbag parts, transmission parts, in-vehicle camera parts, in-vehicle monitor parts, headlights, auxiliary headlights, signal lights, automotive instruments, automotive clocks, in-vehicle motor parts, automotive electrical wires, automotive wire harnesses, automotive audio equipment, automotive seats, automotive air conditioners, automotive air conditioning equipment, and radiator-related parts.

Claims

1. A resin composition for automobile parts, comprising a synthetic resin and a nucleating agent, wherein the nucleating agent is one or more compounds selected from the group consisting of compounds containing a monovalent group represented by the following general formula (1): 【Chemical 1】 (In the general formula (1), X represents a divalent group, and Ar １ and Ar ２ each independently represents an unsubstituted or substituted phenyl group, and * represents a bonding site with another atom.)

2. The compound containing the monovalent group represented by the general formula (1) is represented by the following general formula (2): 【Chemistry 2】 (In the general formula (2), X represents a divalent group, and Ar １ and Ar ２ each independently represents an unsubstituted or substituted phenyl group; W １ and W ２ and each independently represent an unsubstituted or substituted phenyloxy group, or a monovalent group represented by general formula (1).

3. The resin composition for automotive parts according to claim 1, further comprising one or more other nucleating agents in addition to the one or more nucleating agents selected from the group of compounds containing a monovalent group represented by general formula (1).

4. The resin composition for automobile parts according to claim 3, wherein the other nucleating agent comprises at least one compound selected from the group consisting of compounds represented by the following general formula (7): 【Chemistry 3】 (In general formula (7), R １３ represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms. １４ ~R １７ each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms, or R １４ and R １５ or R １６ and R １７ are linked together to form an alkylene group having 3 to 6 carbon atoms or an alkylenedioxy group having 1 to 4 carbon atoms; Z represents a single bond, a —CH(OH)— group, or a —CH(OH)CH(OH)— group.

5. A molded article obtained by molding the resin composition for automobile parts according to any one of claims 1 to 4.

6. An automobile part obtained by molding the resin composition for automobile parts according to any one of claims 1 to 4.

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