Resin composition, molded article, method for producing resin composition, and method for improving crystallinity of resin composition

Abstract

To provide a resin composition having superior crystallinity, a molded article thereof, a production method for a resin composition exhibiting superior crystallinity, and a method for improving the crystallinity of a resin composition.SOLUTION: A resin composition contains a polyester resin and a nucleating agent, the nucleating agent including at least one selected from the group of aromatic phosphate metal salts, sulfonamide metal salts, sulfonimide metal salts, and carboxylate metal salts.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a resin composition, a molded article, a method for producing a resin composition, and a method for improving the crystallinity of a resin composition. [Background technology]

[0002] Various studies have been conducted with the aim of improving the properties of resin compositions. For example, Patent Document 1 below discloses a resin composition containing a polyester resin and an aromatic sulfonate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-6893 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the resin composition proposed in Patent Document 1 has room for further improvement in terms of crystallinity.

[0005] Therefore, an object of the present invention is to provide a resin composition having excellent crystallinity and a molded article thereof, a method for producing a resin composition having excellent crystallinity, and a method for improving the crystallinity of a resin composition. [Means for solving the problem]

[0006] As a result of extensive research, the present inventors have found that the above problems can be solved by using a polyester resin in combination with a specific nucleating agent, and have thus completed the present invention.

[0007] That is, the present invention is a resin composition comprising a polyester resin and a nucleating agent, wherein the nucleating agent comprises at least one selected from the group consisting of an aromatic phosphate metal salt, a sulfonamide metal salt, a sulfonimide metal salt, and a carboxylate metal salt.

[0008] The present invention also relates to a molded article obtained by molding the above resin composition.

[0009] Furthermore, the present invention provides a method for producing a resin composition, comprising a blending step of blending a polyester resin and a nucleating agent, wherein the nucleating agent comprises at least one selected from the group consisting of an aromatic phosphate metal salt, a sulfonamide metal salt, a sulfonimide metal salt, and a carboxylate metal salt.

[0010] Furthermore, the present invention is a method for improving the crystallinity of a resin composition, comprising a blending step of blending a polyester resin with a nucleating agent, wherein the nucleating agent comprises at least one selected from the group consisting of an aromatic phosphate metal salt, a sulfonamide metal salt, a sulfonimide metal salt, and a carboxylate metal salt. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide a resin composition having excellent crystallinity and a molded article thereof, a method for producing a resin composition having excellent crystallinity, and a method for improving the crystallinity of a resin composition. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present invention will be described in detail. First, a resin composition according to the present embodiment will be described.

[0013] <Resin composition> The resin composition of the present embodiment includes a polyester resin and a nucleating agent, wherein the nucleating agent includes at least one selected from the group consisting of an aromatic phosphate metal salt, a sulfonamide metal salt, a sulfonimide metal salt, and a carboxylate metal salt.

[0014] The resin composition of this embodiment has excellent crystallinity.

[0015] Examples of polyester resins include polyalkylene terephthalates such as polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, and polyhexamethylene terephthalate; polyalkylene naphthalates such as polyethylene naphthalate, polypropylene naphthalate, polybutylene naphthalate, and polyhexamethylene naphthalate; poly(3-hydroxybutyrate), poly(3-hydroxybutyrate-co-3-hydroxyhexanoate), poly(3-hydroxybutyrate-co-4-hydroxybutyrate), and poly(3-hydroxybutyrate-co-3-hydroxyhexanoate). Examples of suitable resins include polyhydroxyalkanoates such as polyethylene succinate, polyethylene adipate, polyethylene succinate adipate, polybutylene succinate, polybutylene adipate, and polybutylene succinate adipate; polyalkylene alkanedioate terephthalates such as polyethylene succinate terephthalate, polyethylene adipate terephthalate, polybutylene succinate terephthalate, and polybutylene adipate terephthalate; polyglycolic acid, polylactic acid, and polycaprolactone. In the resin composition of this embodiment, the polyester resin preferably contains at least one selected from the group consisting of polyhydroxyalkanoates, polyalkylene alkanedioates, polyalkylene alkanedioate terephthalates, polylactic acid, and polycaprolactone. Furthermore, in the resin composition of this embodiment, the polyester resin is preferably a biodegradable resin.

[0016] The nucleating agent is a compound that promotes crystallization of the polyester resin. As described above, in this embodiment, the nucleating agent includes at least one selected from the group consisting of an aromatic phosphate metal salt, a sulfonamide metal salt, a sulfonimide metal salt, and a carboxylate metal salt.

[0017] Examples of aromatic phosphate metal salts include 2,2'-methylenebis(4,6-di-tert-butylphenyl)phosphate metal salts.

[0018] Examples of metal ions constituting the aromatic phosphate metal salt include sodium ions, potassium ions, lithium ions, dihydroxyaluminum ions, calcium ions, zinc ions, barium ions, magnesium ions, and hydroxyaluminum ions. Furthermore, from the viewpoint of obtaining a resin composition with excellent crystallinity, the metal ions constituting the aromatic phosphate metal salt are preferably sodium ions, lithium ions, dihydroxyaluminum ions, or hydroxyaluminum ions, more preferably sodium ions, lithium ions, or hydroxyaluminum ions, even more preferably sodium ions or lithium ions, and even more preferably sodium ions. That is, the aromatic phosphate metal salt preferably contains at least one selected from the group consisting of aromatic phosphate sodium salts, aromatic phosphate lithium salts, aromatic phosphate dihydroxyaluminum salts, and aromatic phosphate hydroxyaluminum salts, more preferably aromatic phosphate sodium salts, aromatic phosphate lithium salts, and aromatic phosphate hydroxyaluminum salts, and even more preferably aromatic phosphate sodium salts and aromatic phosphate lithium salts.

[0019] Furthermore, from the viewpoint of obtaining a resin composition having excellent crystallinity, the aromatic phosphate metal salt preferably contains at least one selected from the group consisting of 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], more preferably contains at least one selected from the group consisting of sodium 2,2'-methylenebis(4,6-di-tert-butylphenyl)phosphate, lithium 2,2'-methylenebis(4,6-di-tert-butylphenyl)phosphate, and hydroxyaluminum bis[2,2'-methylenebis(4,6-di-tert-butylphenyl)phosphate], and It is more preferable that the phosphate buffer solution contains at least one selected from the group consisting of 2,2'-methylenebis(4,6-di-tert-butylphenyl)phosphate and lithium 2,2'-methylenebis(4,6-di-tert-butylphenyl)phosphate.

[0020] Examples of sulfonamide metal salts and sulfonimide metal salts include sulfonamide metal salts, methanesulfonamide metal salts, benzenesulfonamide metal salts, toluene-4-sulfonamide metal salts, 4-chlorobenzenesulfonamide metal salts, 4-aminobenzenesulfonamide metal salts, N-butyl-4-methyl-benzenesulfonamide metal salts, N-phenylbenzenesulfonamide metal salts, N-phenyl-4-methyl-benzenesulfonamide metal salts, 4-amino-N-pyridin-2-ylbenzenesulfonamide metal salts, 4-amino-N-(5-methyl-thiazol-2-yl)-benzenesulfonamide metal salts, 4-amino-N-thiazol-2-yl-benzenesulfonamide metal salts, and 4-amino-N-thiazol-2-yl-benzenesulfonamide metal salts. Examples of suitable metal salts include benzenesulfonamide metal salts, 4-amino-N-(5-methyl-isoxazol-3-yl)-benzenesulfonamide metal salts, 4-amino-N-(2,6-dimethoxy-pyrimidin-4-yl)-benzenesulfonamide metal salts, 1,2-benzisothiazol-3(2H)-one-1,1-dioxide metal salts, 4-amino-6-chlorobenzene-1,3-disulfondiamide metal salts, 6-ethoxybenzothiazole-2-sulfonamide metal salts, 5-dimethylaminonaphthalene-1-sulfonamide metal salts, 4-sodiumoxybenzenesulfonamide metal salts, and N-(4-benzenesulfonylamino-phenyl)benzenesulfonamide metal salts.

[0021] Examples of metal ions constituting the sulfonamide metal salt and sulfonimide metal salt include sodium ions, potassium ions, lithium ions, dihydroxyaluminum ions, calcium ions, zinc ions, barium ions, magnesium ions, and hydroxyaluminum ions. Furthermore, from the viewpoint of obtaining a resin composition with excellent crystallinity, the metal ions constituting the sulfonamide metal salt and sulfonimide metal salt are preferably sodium ions, lithium ions, dihydroxyaluminum ions, or hydroxyaluminum ions, more preferably sodium ions, lithium ions, or hydroxyaluminum ions, and even more preferably sodium ions or lithium ions. That is, the sulfonamide metal salt preferably contains at least one selected from the group consisting of sodium sulfonamide, lithium sulfonamide, dihydroxyaluminum sulfonamide, and hydroxyaluminum disulfonamide, and more preferably contains at least one selected from the group consisting of sodium sulfonamide and lithium sulfonamide. The sulfonimide metal salt preferably contains at least one selected from the group consisting of sodium sulfonimide, lithium sulfonimide, dihydroxyaluminum sulfonimide, and hydroxyaluminum disulfonimide, and more preferably contains at least one selected from the group consisting of sodium sulfonimide and lithium sulfonimide.

[0022] Examples of the metal carboxylate include metal salts of fatty acids such as metal acetate, metal propionate, metal butyrate, metal valerate, metal hexanoate, metal octanoate, metal decanoate, metal laurate, metal myristate, metal palmitate, metal stearate, metal behenate, and metal montanate; metal salts of aromatic carboxylic acids such as metal benzoate and metal 4-t-butylbenzoate; metal salts of alicyclic dicarboxylic acids such as metal 2,3-norbornanedicarboxylate and metal 1,2-cyclohexanedicarboxylate; and metal salts of rosinates including metal abietic acid, metal palustric acid, and metal isopimaric acid. Furthermore, from the viewpoint of obtaining a resin composition with excellent crystallinity, the metal carboxylate preferably includes at least one selected from the group consisting of metal salts of fatty acids and metal salts of aromatic carboxylates, more preferably at least one selected from the group consisting of metal salts of fatty acids having 8 to 30 carbon atoms and metal salts of benzoates, even more preferably at least one selected from the group consisting of metal myristates, metal palmitates, metal stearates, metal behenates, metal montanates, and metal benzoates, and even more preferably at least one selected from the group consisting of metal myristates, metal stearates, metal montanates, and metal benzoates.

[0023] Examples of metal ions constituting the metal carboxylate include sodium ions, potassium ions, lithium ions, dihydroxyaluminum ions, calcium ions, zinc ions, barium ions, magnesium ions, and hydroxyaluminum ions. Furthermore, from the viewpoint of obtaining a resin composition with excellent crystallinity, the metal ions constituting the metal carboxylate are preferably sodium ions, lithium ions, dihydroxyaluminum ions, or hydroxyaluminum ions, more preferably sodium ions, lithium ions, or hydroxyaluminum ions, and even more preferably sodium ions or lithium ions. That is, the metal carboxylate preferably contains at least one selected from the group consisting of sodium carboxylate, lithium carboxylate, dihydroxyaluminum carboxylate, and hydroxyaluminum carboxylate, more preferably at least one selected from the group consisting of sodium carboxylate, lithium carboxylate, and hydroxyaluminum carboxylate, and even more preferably at least one selected from the group consisting of sodium carboxylate and lithium carboxylate.

[0024] Furthermore, from the viewpoint of obtaining a resin composition with even better crystallinity, the metal carboxylate preferably contains at least one selected from the group consisting of sodium fatty acid, lithium fatty acid, sodium aromatic carboxylate, and lithium aromatic carboxylate, more preferably contains at least one selected from the group consisting of sodium fatty acid having 8 to 30 carbon atoms, lithium fatty acid having 8 to 30 carbon atoms, sodium aromatic carboxylate, and lithium aromatic carboxylate, even more preferably contains at least one selected from the group consisting of sodium myristate, sodium palmitate, sodium stearate, sodium behenate, sodium montanate, lithium myristate, lithium palmitate, lithium stearate, lithium behenate, lithium montanate, sodium metal benzoate, and lithium metal benzoate, and even more preferably contains at least one selected from the group consisting of sodium myristate, sodium stearate, sodium montanate, lithium myristate, lithium stearate, lithium montanate, sodium metal benzoate, and lithium metal benzoate.

[0025] In the resin composition of this embodiment, the content of the nucleating agent is not particularly limited, but can be, for example, 0.001 to 10 parts by mass per 100 parts by mass of the polyester-based resin. From the viewpoint of further improving the crystallinity of the resin composition and suppressing the occurrence of bloom and the extractability of the nucleating agent, the content of the nucleating agent is preferably 0.005 to 3 parts by mass, more preferably 0.01 to 2 parts by mass, and even more preferably 0.1 to 1 part by mass per 100 parts by mass of the polyester-based resin.

[0026] The resin composition of the present embodiment may further contain, as necessary, at least one additive selected from the group consisting of phenolic antioxidants, phosphorus-based antioxidants, sulfur-based antioxidants, other antioxidants, hindered amine compounds, ultraviolet absorbers, flame retardants, flame retardant aids, lubricants, fillers, hydrotalcites, antistatic agents, fluorescent brighteners, pigments, dyes, etc. (hereinafter referred to as "other additives") The content of the other additives is not particularly limited, and may be within a range that does not impair the effects of the resin composition of the present embodiment.

[0027] 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-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 tate, 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-te 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-butylphenyl)butane, bis[2-tert-bu, 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)phenyl 3-(3,5-dialkyl-4-hydroxyphenyl)propionic acid derivatives such as ethanol, 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)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.

[0028] 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-butylphenyl-2-butyl-2-ethyl-1,3-propanediol phosphite, poly4,4'-isopropylidenediphenol C12-15 alcohol phosphite, bis(diisodecyl)pentaerythritol diphosphite, bis Examples include (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.

[0029] 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.

[0030] 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.

[0031] 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, 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 carboxylate, 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-morpholino-s-triazine polycondensate ) 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-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(2,2,6,6-tetramethyl-4-piperidyloxycarbonyl)butylcarbonyloxy}ethyl]-2,4,8,10-tetraoxo Examples include saspiro[5.5]undecane, 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-piperidylhexadecanoate, and 2,2,6,6-tetramethyl-4-piperidyloctadecanoate.

[0032] 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-hydroxy-4-tert-octylphenyl)benzotriazole, -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-hydroxyphenyl)benzotriazoles such as 2-[2-hydroxy-3-tert-butyl-5-(3-methacryloyloxypropyl)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, 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 (i) Benzoates such as benzoate, 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 acrylates; 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 2,4,6-tris(2-hydroxy-4-hexyloxy-3-methylphenyl)-1,3,5-triazine and 1,12-bis[2-[4-(4,6-diphenyl-1,3,5-triazin-2-yl)-3-hydroxyphenoxy]ethyl]dodecanedioate; and various metal salts or metal chelates, particularly nickel and chromium salts or chelates.

[0033] 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.

[0034] Examples of lubricants include saturated fatty acid amides such as stearic acid amide and behenic acid amide, unsaturated fatty acid amides such as oleic acid amide and erucic acid amide, ethylene bisstearic acid amide, butyl stearate, glycerol monostearate, sorbitan monopalmitate, sorbitan monostearate, stearic acid, stearyl alcohol, mannitol, and hydrogenated castor oil.

[0035] 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 because of its excellent rigidity-imparting effect and easy availability. Furthermore, the filler may be surface-treated as needed.

[0036] The hydrotalcites may be any complex salt compound containing magnesium, aluminum, a hydroxyl group, a carbonate group, and any water of crystallization, and 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 water of crystallization 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 salt of oleic acid, an organic sulfonic acid metal salt such as an alkali metal salt of dodecylbenzenesulfonic acid, a higher fatty acid amide, a higher fatty acid ester, a wax, or the like.

[0037] 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.

[0038] 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.

[0039] Fluorescent brighteners are compounds that absorb ultraviolet light from sunlight or artificial light, convert it into violet to blue visible light, and radiate it to enhance the whiteness and blueness of molded products through their fluorescent action. Examples of fluorescent brighteners include the benzoxazole-based compound CI Fluorescent Brightner 184, the coumarin-based compound CI Fluorescent Brightner 52, and the diaminostilbene disulfonic acid-based compound CI Fluorescent Brightner 24, 85, 71, etc.

[0040] The pigment is not particularly limited, and commercially available pigments can also be used. 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, 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, 2 0, 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.

[0041] 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.

[0042] <Method of manufacturing resin composition> Next, a method for producing a resin composition will be described. The method for producing a resin composition of this embodiment includes a blending step of blending a polyester resin and a nucleating agent. Here, the nucleating agent includes at least one selected from the group consisting of an aromatic phosphate metal salt, a sulfonamide metal salt, a sulfonimide metal salt, and a carboxylate metal salt.

[0043] According to the method for producing a resin composition of the present embodiment, a resin composition with excellent crystallinity can be produced.

[0044] The method for blending the polyester resin and the nucleating agent is not particularly limited, and examples thereof include a method in which a polyester resin powder or pellets, a nucleating agent, and other additives as needed are blended and dry-blended using a mixer such as an FM mixer, mill roll, Banbury mixer, or super mixer, and a method in which a polyester resin powder or pellets, a nucleating agent, and other additives as needed are blended and dry-blended, and the resulting mixture is melt-kneaded, for example, at 80 to 400° C. using a melt-kneading device such as a single-screw extruder or a twin-screw extruder. Here, the kneaded product obtained by melt-kneading may be granulated into a shape such as pellets using a granulating device such as a pelletizer.

[0045] The nucleating agent may be blended as an additive composition containing the nucleating agent and one or more of the other additives described above, or as an additive masterbatch containing a polyester resin, a nucleating agent, and, as necessary, one or more of the other additives. Here, the additive composition may be a one-pack additive composition that is further blended with a granulation aid such as a binder, a wax, a solvent, or silica and granulated.

[0046] <Molded products> Next, the molded article will be described. The molded article of this embodiment is obtained by molding the above-described resin composition.

[0047] The molded article of this embodiment is obtained by molding a resin composition with excellent crystallinity, and therefore has various excellent properties.

[0048] Examples of molded articles of this embodiment include injection-molded articles, fibers, flat yarns, biaxially oriented films, uniaxially oriented films, unstretched films, sheets, thermoforming-molded articles, extrusion blow-molded articles, injection blow-molded articles, injection stretch-blow-molded articles, profile extrusion-molded articles, rotational molded articles, and additive manufacturing articles. More specific examples of molded articles of this embodiment include automotive parts such as bumpers, radiator grilles, side moldings, garnishes, wheel covers, aero parts, instrument panels, door trims, seat fabrics, door handles, and floor mats; home appliance housings, piping, agricultural films, yarns, and agricultural products such as seedling pots; tableware such as cutlery, straws, food trays, beverage cups, and tea bags; packaging containers such as containers, tanks, bags, plastic bags, garbage bags, and coffee capsules; fishing supplies such as lures, fishing lines, and fishing nets; medical instruments; sanitary products such as disposable diapers and sanitary products; amenities; fibers, nonwoven fabrics, cushioning materials, and microbeads.

[0049] The method for molding the molded article of this embodiment 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, thermoforming, and additive manufacturing.

[0050] <Method for improving crystallinity of resin composition> Next, a method for improving the crystallinity of a resin composition will be described. The method for improving the crystallinity of a resin composition of this embodiment includes a blending step of blending a polyester resin and a nucleating agent. Here, the nucleating agent includes at least one selected from the group consisting of an aromatic phosphate metal salt, a sulfonamide metal salt, a sulfonimide metal salt, and a carboxylate metal salt.

[0051] According to the method for improving the crystallinity of a resin composition of this embodiment, the crystallinity of the resin composition can be improved.

[0052] Further embodiments of the present invention include, for example: [1] A polyester resin, A nucleating agent; Including, A resin composition comprising a nucleating agent comprising at least one member selected from the group consisting of an aromatic phosphate metal salt, a sulfonamide metal salt, a sulfonimide metal salt, and a carboxylate metal salt. [2] The resin composition according to [1], wherein the polyester-based resin comprises at least one selected from the group consisting of polyhydroxyalkanoates, polyalkylene alkanedioates, polyalkylene alkanedioate terephthalates, polylactic acids, and polycaprolactones. [3] The resin composition according to [1] or [2], wherein the polyester resin is a biodegradable resin. [4] The resin composition of any one of [1] to [3], wherein the content of the nucleating agent is 0.001 to 10 parts by mass per 100 parts by mass of the polyester resin. [5] A molded article obtained by molding the resin composition of any one of [1] to [4]. [6] A polyester resin, A nucleating agent; a blending step of blending the A method for producing a resin composition, wherein the nucleating agent comprises at least one selected from the group consisting of an aromatic phosphate metal salt, a sulfonamide metal salt, a sulfonimide metal salt, and a carboxylate metal salt. [7] [6] The method for producing a resin composition according to [6], wherein the polyester-based resin comprises at least one selected from the group consisting of polyhydroxyalkanoate, polyalkylene alkanedioate, polyalkylene alkanedioate terephthalate, polylactic acid, and polycaprolactone. [8] The method for producing a resin composition according to [6] or [7], wherein the polyester resin is a biodegradable resin. [9] The method for producing a resin composition according to any one of [6] to [8], wherein the blending amount of the nucleating agent is 0.001 to 10 parts by mass per 100 parts by mass of the polyester resin.

[10] A polyester resin, A nucleating agent; a blending step of blending the A method for improving the crystallinity of a resin composition, wherein the nucleating agent comprises at least one selected from the group consisting of an aromatic phosphate metal salt, a sulfonamide metal salt, a sulfonimide metal salt, and a carboxylate metal salt.

[11] The method for improving the crystallinity of a resin composition according to

[10] , wherein the polyester resin contains at least one selected from the group consisting of polyhydroxyalkanoate, polyalkylene alkanedioate, polyalkylene alkanedioate terephthalate, polylactic acid, and polycaprolactone.

[12] The method for improving the crystallinity of a resin composition according to

[10] or

[11] , wherein the polyester resin is a biodegradable resin.

[13] The method for improving crystallinity of a resin composition according to any one of

[10] to

[12] , wherein the blending amount of the nucleating agent is 0.001 to 10 parts by mass per 100 parts by mass of the polyester resin. [Example]

[0053] 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.

[0054] <Production of Resin Composition> (Examples 1 to 480 and Comparative Examples 1 to 8) The polyester resins and nucleating agents shown in Tables 1 to 48 were blended in the amounts shown in Tables 1 to 48 and mixed for 30 minutes using a rocking mixer (RM-100, manufactured by Aichi Electric Co., Ltd.). The resulting mixture was placed in a twin-screw extruder (Labo Plastomill Micro, manufactured by Toyo Seiki Seisaku-sho, Ltd.) and melt-kneaded at the melting temperatures shown in Tables 1 to 48 and a screw speed of 200 rpm, followed by granulation to obtain resin pellets. The resulting resin pellets were dried under reduced pressure at 60°C and 5 kPa for 8 hours to obtain the resin compositions of Examples 1 to 480 and Comparative Examples 1 to 8. In Tables 1 to 48, the blend amounts of the polyester resins and nucleating agents are expressed in parts by mass.

[0055] The polyester resins and nucleating agents used in this example are as follows:

[0056] [Polyester resin] Polyester resin-1: Polyhydroxybutyrate Polyester resin-2: Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (Bluepha, BP350-PD) Polyester resin-3: Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (Y-1000, manufactured by TianAn Biologic Materials Co., Ltd.) Polyester resin-4: Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (PhaBuilder Biotechnology, Inc., 4-hydroxybutanoic acid content: 10% by mass) Polyester resin-5: Polylactic acid (Natureworks, Ingeo2003D) Polyester resin-6: Polybutylene adipate terephthalate (Chang Chun Petrochemical Co., Ltd., ECO-A05) Polyester resin-7: Polybutylene succinate (FZ71PM, manufactured by PTT MCC Biochem) Polyester resin-8: Caprolactone (Ingevity, Capa 6800)

[0057] [Nucleating agent] Nucleating agent-1: Sodium 2,2'-methylenebis(4,6-di-tert-butylphenyl)phosphate Nucleating agent-2: Lithium 2,2'-methylenebis(4,6-di-tert-butylphenyl)phosphate Nucleating agent-3: Sodium 1,2-benzisothiazol-3(2H)-one-1,1-dioxide Nucleating agent-4: Lithium myristate Nucleating agent-5: Lithium stearate Nucleating agent-6: Lithium montanate Nucleating agent-7: Lithium benzoate Nucleating agent-8: Sodium myristate Nucleating agent-9: Sodium stearate Nucleating agent-10: Sodium montanate Nucleating agent-11: Sodium benzoate

[0058] [Table 1]

[0059] [Table 2]

[0060] [Table 3]

[0061] [Table 4]

[0062] [Table 5]

[0063] [Table 6]

[0064]

Table 7

[0065]

Table 8

[0066]

Table 9

[0067]

Table 10

[0068]

Table 11

[0069]

Table 12

[0070]

Table 13

[0071]

Table 14

[0072]

Table 15

[0073] Table 16

[0074] Table 17

[0075]

Table 18

[0076] Table 19

[0077] Table 20

[0078] Table 21

[0079] Table 22

[0080] Table 23

[0081] Table 24

[0082] Table 25

[0083] Table 26

[0084] Table 27

[0085] Table 28

[0086] Table 29

[0087]

Table 30

[0088] Table 31

[0089] Table 32

[0090] Table 33

[0091] Table 34

[0092] Table 35

[0093] Table 36

[0094] Table 37

[0095] Table 38

[0096] Table 39

[0097] Table 40

[0098] Table 41

[0099] Table 42

[0100] Table 43

[0101] Table 44

[0102] Table 45

[0103] Table 46

[0104] Table 47

[0105] Table 48

[0106] <Characteristics evaluation> The crystallization temperatures of the resin compositions of Examples 1 to 480 and Comparative Examples 1 to 8 were measured in accordance with JIS K7121 using a differential scanning calorimeter (manufactured by PerkinElmer, device name "Diamond") and used as an index of the crystallinity of the resin composition.

[0107] As a result of the above measurements, it was found that the crystallization temperatures of the resin compositions of Examples 1 to 60, Examples 61 to 120, Examples 121 to 180, Examples 181 to 240, Examples 241 to 300, Examples 301 to 360, Examples 361 to 420, and Examples 421 to 480 were higher than the crystallization temperatures of the resin compositions of Comparative Examples 1, 2, 3, 4, 5, 6, 7, and 8. Therefore, it was determined that the resin compositions of Examples 1 to 480 had excellent crystallinity, and "◯" was entered in the "Crystallization" column in Tables 1 to 48.

[0108] From the above, it was confirmed that the resin composition of the present invention has excellent crystallinity.

Claims

1. A polyester resin, A nucleating agent; Including, The resin composition wherein the nucleating agent comprises at least one selected from the group consisting of an aromatic phosphate metal salt, a sulfonamide metal salt, a sulfonimide metal salt, and a carboxylate metal salt.

2. 2. The resin composition according to claim 1, wherein the polyester resin comprises at least one selected from the group consisting of polyhydroxyalkanoates, polyalkylene alkanedioates, polyalkylene alkanedioate terephthalates, polylactic acids, and polycaprolactones.

3. The resin composition according to claim 1 , wherein the polyester resin is a biodegradable resin.

4. 2. The resin composition according to claim 1, wherein the content of the nucleating agent is 0.001 to 10 parts by mass per 100 parts by mass of the polyester resin.

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

6. A polyester resin, A nucleating agent; a blending step of blending the The method for producing a resin composition, wherein the nucleating agent comprises at least one selected from the group consisting of an aromatic phosphate metal salt, a sulfonamide metal salt, a sulfonimide metal salt, and a carboxylate metal salt.

7. A polyester resin, A nucleating agent; a blending step of blending the The method for improving the crystallinity of a resin composition, wherein the nucleating agent comprises at least one selected from the group consisting of an aromatic phosphate metal salt, a sulfonamide metal salt, a sulfonimide metal salt, and a carboxylate metal salt.

Images