TWI472565B - Thermoplastic polymer composition - Google Patents

Description

Thermoplastic polymer composition

This invention relates to a thermoplastic polymer composition.

Since thermoplastic polymers are excellent in transparency and impact resistance, they are widely used in food packaging containers and daily sundries. A thermoplastic polymer composition to which various polymer stabilizers are added to improve the processing stability of the thermoplastic polymer is known (for example, Non-Patent Document 1).

[Non-Patent Document 1] The first one, the basic comprehensive explanation, the forming processing technology that works in the field - materials and forming technology, plastic (Plastic) April 2002 issue, page 4, Industrial Survey (shares) )issued

The industry has been seeking a novel thermoplastic polymer composition that is excellent in processing stability.

The inventors of the present invention have conducted research to solve the problem, and as a result, have achieved the inventions described in the following [1] to [7].

[1] A thermoplastic polymer composition comprising trehalose and a thermoplastic polymer.

[2] The composition according to [1], which contains 0.001 to 5 parts by weight of trehalose with respect to 100 parts by weight of the thermoplastic polymer.

[3] The composition according to [1], which contains 0.02 to 2 parts by weight of trehalose with respect to 100 parts by weight of the thermoplastic polymer.

[4] The composition according to [1], which contains 0.02 to 1 part by weight of trehalose with respect to 100 parts by weight of the thermoplastic polymer.

[5] The composition according to [1], which contains 0.05 to 0.5 part by weight of trehalose with respect to 100 parts by weight of the thermoplastic polymer.

[6] A processing stabilizer for a thermoplastic polymer which contains trehalose as an active ingredient.

[7]. A use of trehalose for improving the processing stability of a thermoplastic polymer.

Hereinafter, the present invention will be described in detail.

First, a processing stabilizer for a thermoplastic polymer containing trehalose as an active ingredient will be described.

The trehalose can be directly used as a processing stabilizer for a thermoplastic polymer regardless of the presence or absence of crystal water. Further, trehalose may be mixed with a suitable additive within a range not impairing the effects of the present invention to prepare a processing stabilizer for a thermoplastic polymer.

Examples of the above additives include antioxidants other than trehalose, ultraviolet absorbers, light stabilizers, metal deactivators, nucleating agents, lubricants, antistatic agents, flame retardants, fillers, pigments, and inorganic fillers. Agents, etc.

Examples of the antioxidant include a phenol-based antioxidant, a hydroquinone-based antioxidant, a sulfur-based antioxidant, and a phosphorus-based antioxidant.

Here, examples of the phenolic antioxidant include 2,6-di-tert-butyl-4-methylphenol, 2,4,6-tri-tert-butylphenol, and 2,6-di- Tert-butylphenol, 2-tert-butyl-4,6-dimethylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2,6-di-t-butyl- 4-n-butylphenol, 2,6-di-tert-butyl-4-isobutylphenol, 2,6-dicyclopentyl-4-methylphenol, 2-(α-methylcyclohexyl) -4,6-dimethylphenol, 2,6-di-octadecyl-4-methylphenol, 2,4,6-tricyclohexylphenol, 2,6-di-t-butyl-4 -methoxymethylphenol, 2,6-di-indenyl-4-methylphenol, 2,4-dimethyl-6-(1'-methylundecyl-1'-yl)phenol 2,4-Dimethyl-6-(1'-methylheptadecyl-1'-yl)phenol, 2,4-dimethyl-6-(1'-methyltridecyl- Alkylation of monophenols such as 1'-yl) phenol and mixtures thereof; 2,4-dioctylthiomethyl-6-tert-butylphenol, 2,4-dioctylthiomethyl-6- Alkylthiol such as methylphenol, 2,4-dioctylthiomethyl-6-ethylphenol, 2,6-di-dodecylthiomethyl-4-nonylphenol, and the like Phenolic; 2,2'-methylenebis(4-methyl-6-t-butylbenzene ), 2,2'-methylenebis(4-ethyl-6-tert-butylphenol), 2,2'-methylenebis[4-methyl-6-(α-methylcyclohexyl) Phenol], 2,2'-methylenebis(4-methyl-6-cyclohexylphenol), 2,2'-methylenebis(4-methyl-6-nonylphenol), 2, 2'-methylenebis(4,6-di-t-butylphenol), 2,2'-ethylenebis(4,6-di-t-butylphenol), 2,2'-Asia Ethyl bis(4-isobutyl-6-tert-butylphenol), 2,2'-methylenebis 6-(a-methylbenzyl)-4-nonylphenol), 2,2' -methylenebis[6-(α,α-dimethylbenzyl)-4-nonylphenol], 4,4'-methylenebis(6-tert-butyl-2-methylphenol) , 4,4'-methylenebis(2,6-di-t-butylphenol), 4,4'-butylenebis(3-methyl-6-tert-butylphenol), 1,1 - bis(4-hydroxyphenyl)cyclohexane, 1,1-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butane, 2,6-bis (3-third Butyl-5-methyl-2-hydroxybenzyl)-4-methylphenol, 1,1,3-tris(5-tert-butyl-4-hydroxy-2-methylphenyl)butane, 1,1-bis(5-t-butyl-4-hydroxy-2-methylphenyl)-3-n-dodecyldecylbutane, ethylene glycol butyrate bis[3,3-double-3 '-Tertiary butyl-4'-hydroxyphenyl]ester, bis (3-third butyl) -4-hydroxy-5-methylphenyl)dicyclopentadiene, bis[2-(3'-tert-butyl-2'-hydroxy-5'-methylbenzyl)-6 -T-butyl-4-methylphenyl]ester, 1,1-bis(3,5-dimethyl-2-hydroxyphenyl)butane, 2,2-bis(3,5-di- Third butyl-4-hydroxyphenyl)propane, 2,2-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)-4-n-dodecyldecylbutane, 1 , alkylene bisphenol and its derivatives such as 1,5,5-tetrakis(5-t-butyl-4-hydroxy-2-methylphenyl)pentane and mixtures thereof; 4-hydroxylauric acid A mercaptoaminophenol derivative such as aniline, 4-hydroxystearyl anilide, octyl N-(3,5-di-t-butyl-4-hydroxyphenyl)carbamate, and the like 4-hydroxylauric acid aniline, 4-hydroxystearyl aniline, N-(3,5-di-t-butyl-4-hydroxyphenyl) carbamic acid octyl ester, and the like, etc. a hydroxyaminophenol derivative; selected from the group consisting of methanol, ethanol, octanol, stearyl alcohol, ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 1, 9-decanediol, neopentyl glycol, diethylene glycol, thioethylene glycol, spirodiol, triethylene glycol, pentaerythritol, three ( Hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)oxalylamine, 3-thiaundecyl alcohol, 3-thiapentadecanol, trimethylhexanediol, At least one alcohol and β-(3) of a group consisting of trimethylolpropane and 4-hydroxymethyl-1-phosphono-2,6,7-trioxabicyclo[2,2,2]octane , an ester composed of 5-di-t-butyl-4-hydroxyphenyl)propionic acid; 2,2'-thiobis(6-tert-butylphenol), 2,2'-thiobis ( 4-methyl-6-tert-butylphenol), 2,2'-thiobis(4-octylphenol), 4,4'-thiobis(2-methyl-6-t-butyl) Hydroxy thiodiphenyl ether such as phenol), 4,4'-(2,6-dimethyl-4-hydroxyphenyl) disulfide; 3,5,3',5'-tetra-third Base-4,4'-dihydroxydibenzyl ether, octadecyl 4-hydroxy-3,5-dimethylbenzyl decylacetate, tris(3,5-di-t-butyl-4- Hydroxybenzyl)amine, bis(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl) dithioterephthalate, bis(3,5-di-t-butyl) Benzyl derivative (O-benzyl derivative, N), such as 4-hydroxybenzyl) sulfide, isooctyl 3,5-di-t-butyl-4-hydroxybenzyl decylacetate, and the like -benzyl derivative, S-benzyl derivative); 2,4 - bis(n-octylthio)-6-(4-hydroxy-3,5-di-t-butylanilino)-1,3,5-three 2-n-octylthio-4,6-bis(4-hydroxy-3,5-di-t-butylanilino)-1,3,5-three 2-n-octylthio-4,6-bis(4-hydroxy-3,5-di-t-butylphenoxy)-1,3,5-three , 2,4,6-tris(3,5-di-t-butyl-4-phenoxy)-1,3,5-three , tris(4-t-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate, tris(3,5-di-t-butyl-4-hydroxybenzyl) Cyanurate, 2,4,6-tris(3,5-di-t-butyl-4-hydroxyphenylethyl)-1,3,5-three , 2,4,6-tris(3,5-di-t-butyl-4-hydroxyphenylpropyl)-1,3,5-three , tris(3,5-dicyclohexyl-4-hydroxybenzyl)isocyanurate, tris[2-(3',5'-di-t-butyl-4'-hydroxycinnaxyloxy) Ethyl]isocyanurate and mixtures thereof, etc. Derivative; 2,2-bis(3,5-di-t-butyl-2-hydroxybenzyl)malonate di-octadecyl ester, 2-(3-tert-butyl-4-hydroxyl -5-methylbenzyl)di-octadecylmalonate, 2,2-bis(3,5-di-t-butyl-4-hydroxybenzyl)malonate di-dodecane Glycosyl ethyl ester, 2,2-bis(3,5-di-t-butyl-4-hydroxybenzyl)malonic acid bis[4-(1,1,3,3-tetramethylbutyl) a hydroxybenzylated malonate derivative such as a phenyl]ester and a mixture thereof; 1,3,5-trimethyl-2,4,6-tris(3,5-di-t-butyl- 4-hydroxybenzyl)benzene, 1,4-bis(3,5-di-tert-butyl-4-hydroxybenzyl)-2,3,5,6-tetramethylbenzene, 2,4,6 An aromatic hydroxybenzyl derivative such as tris(3,5-t-butyl-4-hydroxybenzyl)phenol and mixtures thereof; 3,5-di-t-butyl-4-hydroxybenzylphosphine Dimethyl acid, diethyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, di-octadecane 3,5-di-t-butyl-4-hydroxybenzylphosphonate Base, 5-tert-butyl-4-hydroxy-3-methylbenzylphosphonic acid di-octadecyl ester, 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid monoester a benzylphosphonate derivative such as a calcium salt and a mixture thereof; , ethanol, octanol, stearyl alcohol, ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 1,9-nonanediol, neopentyl glycol, Diethylene glycol, thioethylene glycol, spirodiol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)glucamine, 3 -thiaundecyl alcohol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane and 4-hydroxymethyl-1-phosphono-2,6,7-trioxa An ester of at least one alcohol in a group consisting of bicyclo[2,2,2]octane and β-(5-t-butyl-4-hydroxy-3-methylphenyl)propionic acid; Free methanol, ethanol, octanol, stearyl alcohol, ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 1,9-nonanediol, neopentyl Alcohol, diethylene glycol, thioethylene glycol, spirodiol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)oxacin , 3-thiaundecyl alcohol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane and 4-hydroxymethyl-1-phosphonium-2,6,7-three At least one alcohol of the group consisting of oxabicyclo[2,2,2]octane An ester of (3,5-dicyclohexyl-4-hydroxyphenyl)propanoic acid; selected from the group consisting of methanol, ethanol, octanol, stearyl alcohol, ethylene glycol, 1,3-propanediol, 1, 4-butanediol, 1,6-hexanediol, 1,9-nonanediol, neopentyl glycol, diethylene glycol, thioethylene glycol, spirodiol, triethylene glycol, pentaerythritol, three (hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)oxalylamine, 3-thiaundecyl alcohol, 3-thiapentadecanol, trimethylhexanediol And at least one alcohol of the group consisting of trimethylolpropane and 4-hydroxymethyl-1-phosphono-2,6,7-trioxabicyclo[2,2,2]octane and 3,5 An ester of di-t-butyl-4-hydroxyphenylacetic acid; N,N'-bis[3-(3',5'-di-t-butyl-4'-hydroxyphenyl)propane醯,N,N'-bis[3-(3',5'-di-t-butyl-4'-hydroxyphenyl)propanyl]hexanediamine, N,N'-double [ 3-(3',5'-di-t-butyl-4'-hydroxyphenyl)propanyl]propanediamine and mixtures thereof, etc. β-(3,5-di-t-butyl- Tocopherol such as 4-hydroxyphenyl)propionic acid; tocopherol such as α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol, and the like.

Examples of the hydroquinone-based antioxidant include hydroquinone or 2,6-di-tert-butyl-4-methoxyphenol and 2,5-di-tert-butyl hydroquinone. , 2,5-di-third-pentyl hydroquinone, 2,6-diphenyl-4-octadecyloxyphenol, 2,6-di-t-butyl hydroquinone, 2, 5-di-t-butyl-4-hydroxyanisole, stearic acid (3,5-di-t-butyl-4-hydroxyphenyl) ester, adipic acid bis(3,5-di- A mixture of tert-butyl-4-hydroxyphenyl)ester and the like.

Examples of the sulfur-based antioxidant include dilauryl 3,3'-thiodipropionate, tridecyl 3,3'-thiodipropionate, and 3,3'-thiodipropionic acid. Dimyristyl ester, 3,3'-thiodipropionate distearyl ester, 3,3'-thiodipropionic acid lauryl stearyl ester, neopentane tetrakis(4-lauryl thiopropyl) Acid ester).

Examples of the phosphorus-based antioxidant include triphenyl phosphite, tris(nonylphenyl) phosphite, tris(2,4-di-tert-butylphenyl) phosphite, and trilaurate phosphite. Ester, tri-octadecyl phosphite, distearyl pentaerythritol diphosphite, diisodecyl pentaerythritol diphosphite, bis(2,4-di-t-butylphenyl)pentaerythritol di Phosphate ester, bis(2,4-di-tert-butyl-6-methylphenyl)pentaerythritol diphosphite, bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol Diphosphite, bis(2,4,6-tri-t-butylphenyl)pentaerythritol diphosphite, tristea sorbitol triphosphite, tetrakis (2,4-di-third) Phenyl)-4,4'-diphenylene diphosphinate, 2,2'-methylenebis(4,6-di-t-butylphenyl)-2-ethylhexyl Phosphate, 2,2'-ethylenebis(4,6-di-t-butylphenyl)fluorophosphite, bis(2,4-di-t-butyl-6-methylphenyl) Ethyl phosphite, bis(2,4-di-t-butyl-6-methylphenyl)methyl phosphite, 2-(2,4,6-tri-tert-butylphenyl) )-5-ethyl-5-butyl-1,3,2-oxaphosphine, 2,2',2 "-Nitrate-based [triethyl-tris(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl) phosphite and a mixture of such.

Further, examples of the ultraviolet absorber include phenyl salicylate, 4-tert-butylphenyl salicylate, and 3',5'-di-t-butyl-4'-hydroxybenzoic acid- 2,4-di-t-butylphenyl ester, salicylic acid-4-trioctylphenyl ester, bis(4-t-butylbenzylidene) resorcinol, benzhydrazine-based benzene Diphenol, cetyl 3',5'-di-tert-butyl-4'-hydroxybenzoate, 3',5'-di-t-butyl-4'-hydroxybenzoic acid octadecane Salicylic acid such as a base ester, 3',5'-di-t-butyl-4'-hydroxybenzoic acid-2-methyl-4,6-di-t-butylphenyl ester and the like Ester derivatives; 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octyloxybenzophenone, 2,2'-dihydroxyl 4-methoxybenzophenone, bis(5-benzylidene-4-hydroxy-2-methoxyphenyl)methane, 2,2',4,4'-tetrahydroxybenzophenone a 2-hydroxybenzophenone derivative such as a mixture thereof; 2-(2-hydroxy-5-methylphenyl)benzotriazole, 2-(3',5'-di-t-butyl group -2'-hydroxyphenyl)benzotriazole, 2-(5'-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(2'-hydroxy-5'-third octyl Phenyl phenyl) , 2-(3-tert-butyl-2-hydroxy-5-methylphenyl)-5-chlorobenzotriazole, 2-(3'-secondbutyl-2'-hydroxy-5'- Tert-butylphenyl)benzotriazole, 2-(2'-hydroxy-4'-octyloxyphenyl)benzotriazole, 2-(3',5'-di-third amyl- 2'-hydroxyphenyl)benzotriazole, 2-[2'-hydroxy-3',5'-bis(α,α-dimethylbenzyl)phenyl]-2H-benzotriazole, 2 -[(3'-Tertibutyl-2'-hydroxyphenyl)-5'-(2-octyloxycarbonylethyl)phenyl]-5-chlorobenzotriazole, 2-[3'- Third butyl-5'-[2-(2-ethylhexyloxy)carbonylethyl]-2'-hydroxyphenyl]-5-chlorobenzotriazole, 2-[3'-third -2'-hydroxy-5'-(2-methoxycarbonylethyl)phenyl]-5-chlorobenzotriazole, 2-[3'-tert-butyl-2'-hydroxy-5' -(2-methoxycarbonylethyl)phenyl]benzotriazole, 2-[3'-tert-butyl-2'-hydroxy-5-(2-octyloxycarbonylethyl)phenyl] Benzotriazole, 2-[3'-tert-butyl-2'-hydroxy-5'-[2-(2-ethylhexyloxy)carbonylethyl]phenyl]benzotriazole, 2- [2-hydroxy-3-(3,4,5,6-tetrahydrophthalimidomethyl)-5-methylphenyl]benzotriazole, 2-(3,5-di- Third butyl-2-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3'-dodecyl-2'- -5'-methylphenyl)benzotriazole, 2-[3'-tert-butyl-2'-hydroxy-5'-(2-isooctyloxycarbonylethyl)phenyl]benzo a mixture of triazoles and the like, or 2,2'-methylenebis[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl Phenol, 2,2'-methylenebis[4-tert-butyl-6-(2H-benzotriazol-2-yl)phenol], poly(3~11) (ethylene glycol) and 2 a condensate of [3'-t-butyl-2'-hydroxy-5'-(2-methoxycarbonylethyl)phenyl]benzotriazole, poly(3-11) (ethylene glycol) Condensate with methyl 3-[3-(2H-benzotriazol-2-yl)-5-t-butyl-4-hydroxyphenyl]propanoate, 3-[3-tert-butyl- 5-(5-chloro-2H-benzotriazol-2-yl)-4-hydroxyphenyl]propanoic acid 2-ethylhexyl ester, 3-[3-tert-butyl-5-(5- Octyl chloro-2H-benzotriazol-2-yl)-4-hydroxyphenyl]propanoate, 3-[3-t-butyl-5-(5-chloro-2H-benzotriazol-2- Methyl 4-hydroxyphenyl]propanoate, 3-[3-tert-butyl-5-(5-chloro-2H-benzotriazol-2-yl)-4-hydroxyphenyl]propane 2-(2'-hydroxyphenyl)benzotriazole such as a mixture of an acid and the like.

Examples of the photostabilizer include bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate and bis(2,2,6,6-tetramethyl succinate). 4-piperidinyl)ester, bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate, bis(N-octyloxy-2,2) ,6,6-tetramethyl-4-piperidinyl), bis(N-benzyloxy-2,2,6,6-tetramethyl-4-piperidinyl) sebacate, bismuth Acid bis(N-cyclohexyloxy-2,2,6,6-tetramethyl-4-piperidyl) ester, 2-(3,5-di-t-butyl-4-hydroxybenzyl) Bis(2-,2,6,6-pentamethyl-4-piperidinyl)-2-ylpropionate, 2,2-bis(3,5-di-t-butyl-4 -hydroxybenzyl)-2-butylmalonic acid bis(1-propenyl 2,2,6,6-tetramethyl-4-piperidyl) ester, azelaic acid bis(1,2, 2,6,6-pentamethyl-4-piperidinyl), 2,2,6,6-tetramethyl-4-piperidyl methacrylate, 4-[3-(3,5- Di-t-butyl-4-hydroxyphenyl)propanoxy]-1-[2-(3-(3,5-di-t-butyl-4-hydroxyphenyl)propenyloxy) Ethyl]-2,2,6,6-tetramethylpiperidine, 2-methyl-2-(2,2,6,6-tetramethyl-4-piperidyl)amino-N-( 2,2,6,6-tetramethyl-4-piperidinyl)propanamide, 1,2,3,4-butanetetracarboxylic acid tetrakis(2,2,6,6-tetramethyl-4- Piperidinyl), 1, 2, 3, 4-(1,2,2,6,6-pentamethyl-4-piperidinyl) 4-butanetetracarboxylate; 1,2,3,4-butanetetracarboxylic acid and 1,2,2,6 , a mixed ester of 6-pentamethyl-4-piperidinol and 1-tridecanol, 1,2,3,4-butanetetracarboxylic acid and 2,2,6,6-tetramethyl-4 a mixed esterified product of piperidinol and 1-tridecanol, 1,2,3,4-butanetetracarboxylic acid and 1,2,2,6,6-pentamethyl-4-piperidinol and 3 Mixed esterified product of 9,2-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5‧5]undecane, 1,2,3 , 4-butane tetracarboxylic acid and 2,2,6,6-tetramethyl-4-piperidinol and 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4 Mixed esterified product of 8,10-tetraoxaspiro[5‧5]undecane, dimethyl succinate and 1-(2-hydroxyethyl)-4-hydroxy-2,2,6,6 - polymethyl condensate of tetramethylpiperidine, poly[(6- Lolinyl-1,3,5-three -2,4-diyl)((2,2,6,6-tetramethyl-4-piperidinyl)imido)hexamethylene ((2,2,6,6-tetramethyl-) 4-piperidinyl)imido)], poly[(6-(1,1,3,3-tetramethylbutyl)imido-1,3,5-tri -2,4-diyl((2,2,6,6-tetramethyl-4-piperidinyl)imino)hexamethylene ((2,2,6,6-tetramethyl-4) -piperidinyl)imido)), N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)hexanediamine and 1,2-dibromoethane Condensate, N, N', 4,7-tetra[4,6-bis(N-butyl-N-(2,2,6,6-tetramethyl-4-piperidyl)amino)- 1,3,5-three -2-yl]-4,7-diazadecane-1,10-diamine, N,N',4-tris[4,6-bis(N-butyl-N-(2,2, 6,6-tetramethyl-4-piperidinyl)amino)-1,3,5-three -2-yl]-4,7-diazadecane-1,10-diamine, N,N',4,7-tetra[4,6-bis(N-butyl-N-(1, 2,2,6,6-pentamethyl-4-piperidinyl)amino)-1,3,5-three -2-yl]-4,7-diazadecane-1,10-diamine, N,N',4-tris[4,6-bis(N-butyl-N-(1,2, 2,6,6-pentamethyl-4-piperidinyl)amino)-1,3,5-three Hindered amine light stabilizer such as 2-yl]-4,7-diazadecane-1,10-diamine and mixtures thereof; α-cyano-β,β-diphenylacrylate , α-cyano-β, β-diphenyl isooctyl acrylate, α-methoxycarbonyl cinnamic acid methyl ester, α-cyano-β-methyl-p-methoxycinnamate methyl ester, α-cyanide Benzyl-β-methyl-p-methoxycinnamate butyl ester, α-methoxycarbonyl-p-methoxycinnamate methyl ester, N-(β-methoxycarbonyl-β-cyanovinyl)-2- Acrylate light stabilizer such as methyl porphyrin and its mixture; nickel wrong of 2,2'-thiobis-[4-(1,1,3,3-tetramethylbutyl)phenol] a nickel-based light stabilizer such as a compound, a dibutyl nickel dithiocarbamate, a nickel salt of a monoalkyl ester, a nickel complex of ketone oxime, and the like; 4,4'-dioctyloxy grass Anthraquinone, 2,2'-diethoxyoxalinol, 2,2'-dioctyloxy-5,5'-di-t-butylbutyl anilide, 2,2'-di- Dodecyloxy-5,5'-di-t-butyl-decyl aniline, 2-ethoxy-2'-ethyloxatolide, N,N'-bis(3-dimethylamine Propylamine, oxalylamine, 2-ethoxy-5-t-butyl-2'-ethoxyxantanilide, 2-ethoxy-5,4'- - a tert-amine-based light stabilizer such as a mixture of tert-butyl-2'-ethyloxatolepine and the like; 2,4,6-tris(2-hydroxy-4-octyloxyphenyl)- 1,3,5-three , 2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-tri ,2-[2,4-dihydroxyphenyl-4,6-bis(2,4-dimethylphenyl)-1,3,5-three 2,4-bis(2-hydroxy-4-propoxyphenyl)-6-(2,4-dimethylphenyl)-1,3,5-three , 2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(4-methylphenyl)-1,3,5-three , 2-(2-hydroxy-4-dodecyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-three ,2-[2-hydroxy-4-(2-hydroxy-3-butoxypropoxy)phenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5 -three ,2-[2-hydroxy-4-(2-hydroxy-3-octyloxypropoxy)phenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5 -three 2-(2-hydroxyphenyl)-1,3,5-three, etc. Light stabilizer.

As the stabilizer, in addition to the above, for example, N,N-dibenzylhydroxylamine, N,N-diethylhydroxylamine, N,N-dioctylhydroxylamine, N,N-dilauroyl may also be mentioned. Hydroxylamine, N,N-di-tetradecylhydroxylamine, N,N-di-hexadecylhydroxylamine, N,N-di-octadecylhydroxylamine, N-hexadecyl-N Hydroxylamines such as octadecylhydroxylamine, N-heptadecyl-N-octadecylhydroxylamine, and the like.

Examples of the lubricant include aliphatic hydrocarbons such as paraffin and wax, higher aliphatic acids having 8 to 22 carbons, and metals (Al, Ca, Mg, and Zn) having a higher aliphatic acid having 8 to 22 carbon atoms. An aliphatic alcohol having a carbon number of 8 to 22, a polyglycol, an ester composed of a higher fatty acid having 4 to 22 carbon atoms and an aliphatic monohydric alcohol having 4 to 18 carbon atoms, and a higher aliphatic decylamine having a carbon number of 8 to 22 , polyoxyl oil, rosin derivatives.

The metal deactivator may, for example, be a metal deactivator such as a thiocarbamate, a salicylic acid, a benzotriazole, an imidazole or a thiadiazole.

Examples of the nucleating agent include a nucleating agent such as a metal phosphate system, a benzylidene sorbitol system, or a carboxylic acid metal salt system.

Examples of the antistatic agent include a nonionic type such as an ester type, an ether or a hydroxylamine; an anion type such as a sulfonate or a phosphate; a cationic type; and an amphoteric type antistatic agent.

Examples of the flame retardant include inorganic flame retardants represented by magnesium hydroxide and aluminum hydroxide, and organic flame retardants represented by halogens and phosphorus.

Examples of the pigment include organic pigments such as azo yellow, isoindolinone, azo, phthalocyanine, anthraquinone, and quinacridone, or carbon black, red dan, and chrome yellow. Inorganic pigments such as molybdenum orange, lead orthochromate, lead molybdate, titanium white, ultramarine blue, iron blue, cobalt blue, titanium yellow, black lead (graphite), zinc white.

Examples of the filler include carbon black, white carbon, clay, mica, calcium carbonate, and talc.

Among these additives, the phenol-based antioxidant, the phosphorus-based antioxidant, the sulfur-based antioxidant, the ultraviolet absorber, and the hindered amine-based light stabilizer are preferably used.

As a more preferable phenolic antioxidant, 2,6-di-t-butyl-4-methylphenol, 2,4,6-tri-tert-butylphenol, 2,4-dioctylsulfide Methyl-6-methylphenol, 2,2'-thiobis(6-tert-butylphenol), 2,2'-methylenebis(4-methyl-6-tert-butylphenol ), 2,2'-methylenebis(4-ethyl-6-tert-butylphenol), 2,2'-methylenebis[4-methyl-6-(α-methylcyclohexyl) Phenol], 2,2'-methylenebis(4-methyl-6-cyclohexylphenol), 2,2'-methylenebis(4,6-di-t-butylphenol), 2 , 2'-ethylenebis(4,6-di-tert-butylphenol), 4,4'-methylenebis(6-tert-butyl-2-methylphenol), 4,4' -methylenebis(2,6-di-tert-butylphenol), 4,4'-butylene bis(3-methyl-6-tert-butylphenol), 1,1-bis(4- Hydroxyphenyl)cyclohexane, 1,1-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butane, 1,1,3-tris(5-tert-butyl- 4-hydroxy-2-methylphenyl)butane, bis[3,3-bis-3'-tert-butyl-4'-hydroxyphenyl]glycol butyrate; 2,4,6- Tris(3,5-di-t-butyl-4-phenoxy)-1,3,5-three , tris(4-t-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate, bis(3,5-di-t-butyl-4-hydroxybenzyl) Cyanurate, tris[2-(3',5'-di-t-butyl-4'-hydroxycinnaxyloxy)ethyl]isocyanurate, 3,5-di-third Diethyl 4-hydroxybenzylphosphonate, di-n-octadecyl 3,5-di-t-butyl-4-hydroxybenzylphosphonate, 3,5-di-t-butyl Calcium salt of -4-hydroxybenzylphosphonic acid monoester, n-octadecyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, neopentyl tetrakis 3,5-di-t-butyl-4-hydroxycinnamate), thiodiethylidene bis(3,5-di-t-butyl-4-hydroxycinnamate), 1,3, 5-trimethyl-2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzyl)benzene, 3,6-dioxaoctamethylene bis (3,5- Di-t-butyl-4-hydroxycinnamate), hexamethylenebis(3,5-di-t-butyl-4-hydroxycinnamate), triethylene glycol bis (5-third Butyl-4-hydroxy-3-methylcinnamate), 3,9-bis[2-(3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propoxyloxy )-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane, N,N'-bis[3-(3',5'-di- First Tributyl-4'-hydroxyphenyl)propanyl]anthracene and N,N'-bis[3-(3',5'-di-t-butyl-4'-hydroxyphenyl)propanyl Dihexylamine, these may be used alone or in combination of two or more.

Preferred phosphorus-based antioxidants include tris(nonylphenyl) phosphite, tris(2,4-di-tert-butylphenyl) phosphite, and distearyl pentaerythritol diphosphoric acid. Ester, bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, bis(2,4-di-tert-butyl-6-methylphenyl)pentaerythritol diphosphite, double (2,6-di-t-butyl-4-methylphenyl)pentaerythritol diphosphite, tetrakis(2,4-di-t-butylphenyl)-4,4'-diphenylene Diphosphonite, 2,2'-methylenebis(4,6-di-t-butylphenyl)-2-ethylhexylphosphite, 2,2'-ethylene bis (4 ,6-di-t-butylphenyl)fluorophosphite, bis(2,4-di-t-butyl-6-methylphenyl)ethyl phosphite, 2-(2,4, 6-tri-tert-butylphenyl)-5-ethyl-5-butyl-1,3,2-oxaphospholane and 2,2',2"-azalkynyl [triethyl - tris(3,3',5,5'-tetra-t-butyl-1,1'-biphenyl-2,2'-diyl) phosphite, which may be used alone or in two More than one species.

As a preferred ultraviolet absorber, phenyl salicylate, 4-tert-butylphenyl salicylate, 3',5'-di-t-butyl-4'-hydroxybenzoic acid- 2,4-di-t-butylphenyl ester, salicylic acid-4-trioctylphenyl ester, 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone , 2-hydroxy-4-octyloxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, bis(5-benzylidene-4-hydroxy-2-methoxy Phenyl)methane, 2,2',4,4'-tetrahydroxybenzophenone, 2-(2-hydroxy-5-methylphenyl)benzotriazole, 2-(3',5' -di-t-butyl-2'-hydroxyphenyl)benzotriazole, 2-(5'-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(2'-hydroxyl -5'-T-octylphenyl)benzotriazole, 2-(3-tert-butyl-2-hydroxy-5-methylphenyl)-5-chlorobenzotriazole, 2-(3 '-Secondyl-2'-hydroxy-5'-tert-butylphenyl)benzotriazole, 2-(2'-hydroxy-4'-octyloxyphenyl)benzotriazole, 2 -(3',5'-di-third-pentyl-2'-hydroxyphenyl)benzotriazole and 2-[2'-hydroxy-3',5'-bis(α,α-dimethyl Benzyl)phenyl]-2H-benzotriazole, these may be used alone or in combination of two or more.

As a better hindered amine light stabilizer, bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate and bismuth azelaic acid (1, 2, 2, 6,6-pentamethyl-4-piperidinyl), bis(N-octyloxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, sebacic acid Bis(N-benzyloxy-2,2,6,6-tetramethyl-4-piperidinyl) ester, bis(N-cyclohexyloxy-2,2,6,6-tetramethyl) sebacate 4-piperidinyl)ester, 2-(3,5-di-t-butyl-4-hydroxybenzyl)-2-butylmalonic acid bis(1,2,2,6,6- Pentamethyl-4-piperidinyl), 2,2-bis(3,5-di-t-butyl-4-hydroxybenzyl)-2-butylmalonic acid bis(1-propenyl) -2,2,6,6-tetramethyl-4-piperidinyl), bis(2,2,6,6-tetramethyl-4-piperidyl) succinate, methacrylic acid- 2,2,6,6-tetramethyl-4-piperidinyl ester, 4-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propanoxy]-1-[ 2-(3-(3,5-di-t-butyl-4-hydroxyphenyl)propenyloxy)ethyl]-2,2,6,6-tetramethylpiperidine, 2-methyl -2-(2,2,6,6-tetramethyl-4-piperidinyl)amino-N-(2,2,6,6-tetramethyl-4-piperidyl)propanamide, 1,2,3,4-butanetetracarboxylic acid tetrakis(2,2,6,6-tetramethyl-4-piperidyl) ester; 1,2,3,4-butanetetracarboxylic acid tetrakis (1, 2,6,6-five Mixture of 4-piperidinyl)ester, 1,2,3,4-butanetetracarboxylic acid with 1,2,2,6,6-pentamethyl-4-piperidinol and 1-tridecyl alcohol Esterified product, mixed esterified product of 1,2,3,4-butanetetracarboxylic acid with 2,2,6,6-tetramethyl-4-piperidinol and 1-tridecanol, 1,2,3 , 4-butane tetracarboxylic acid and 1,2,2,6,6-pentamethyl-4-piperidinol and 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2 Mixed esterified product of 4,8,10-tetraoxaspiro[5‧5]undecane, 1,2,3,4-butanetetracarboxylic acid and 2,2,6,6-tetramethyl-4 a mixed esterified product of piperidinol and 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5‧5]undecane Polycondensate of dimethyl succinate and 1-(2-hydroxyethyl)-4-hydroxy-2,2,6,6-tetramethylpiperidine, poly[(6- Lolinyl-1,3,5-three -2,4-diyl)((2,2,6,6-tetramethyl-4-piperidinyl)imido)hexamethylene ((2,2,6,6-tetramethyl-) 4-piperidinyl)imido)] and poly[(6-(1,1,3,3-tetramethylbutyl)-1,3,5-tri -2,4-diyl)((2,2,6,6-tetramethyl-4-piperidinyl)imido)hexamethylene ((2,2,6,6-tetramethyl-) 4-piperidinyl)imido)], these may be used alone or in combination of two or more.

When the trehalose and the additive are mixed to form a processing stabilizer for a thermoplastic polymer, examples of the method for producing the stabilizer include a Henschel mixer, a super mixer, and a high speed. A method in which a mixer such as a high-speed mixer mixes them. The resulting mixture may be further processed into an appropriate shape by extrusion molding, stirring granulation or the like.

The thermoplastic polymer composition of the present invention contains trehalose and a thermoplastic polymer. The amount of trehalose used is preferably in the range of 0.001 to 5 parts by weight, more preferably 0.02 to 2 parts by weight, even more preferably 0.02 to 1 part by weight, based on 100 parts by weight of the thermoplastic polymer, and further preferably More preferably, it is in the range of 0.05 to 0.5 parts by weight.

Examples of the thermoplastic polymer include an ethylene-propylene copolymer, an ethylene-propylene-diene terpolymer, a propylene-1-butene random copolymer, a propylene-1-hexene random copolymer, and propylene- 1-octene random copolymer, propylene-ethylene-1-butene copolymer, propylene-ethylene-1-hexene copolymer, propylene-ethylene-1-octene copolymer, propylene-ethylene block copolymer, (propylene)-(propylene-ethylene) block copolymer, (propylene)-(propylene-ethylene-1-butene) block copolymer, (propylene)-(propylene-ethylene-1-hexene) block copolymer , (propylene)-(propylene-1-butene) block copolymer, (propylene)-(propylene-1-hexene) block copolymer, (propylene-ethylene)-(propylene-ethylene-1-butyl Alkene block copolymer, (propylene-ethylene)-(propylene-ethylene-1-hexene) block copolymer, (propylene-ethylene)-(propylene-1-butene) block copolymer, (propylene- Ethylene)-(propylene-1-hexene) block copolymer, (propylene-1-butene)-(propylene-ethylene) block copolymer, (propylene-1-butene)-(propylene-ethylene-1 -butene) block copolymer, (propylene-1-butene)-(propylene-ethylene-1-hexene) block copolymer, (propylene-1-butene)-(propylene-1-butene) Embedded Polypropylene resin such as copolymer, (propylene-1-butene)-(propylene-1-hexene) block copolymer; high density polyethylene (HD-PE, low density polyethylene), low density polyethylene (LD) -PE, Low density Polyethylene), polyethylene resin such as linear low density polyethylene (LLDPE); methylpentene polymer; ethylene-ethyl acrylate copolymer; ethylene-vinyl acetate copolymerization Polystyrene (poly(p-methylstyrene), poly(α-methylstyrene), etc., or acrylonitrile-styrene copolymer (AS, Acrylonitrile Styrene copolymer), acrylonitrile-butyl ABS, Acrylonitrile Butadiene Styrene copolymer, special acrylic rubber-acrylonitrile-styrene copolymer, acrylonitrile-chlorinated polyethylene-styrene copolymer, styrene-butadiene block Copolymer (SBS, Styrene-Butadiene block copolymer), etc.; chlorinated polyethylene; chlorinated rubber; polyvinylidene chloride; polymethyl methacrylate (PMMA, Polymethylmethacrylate); ethylene-vinyl alcohol copolymer (EVA, Ethylene-Vinyl acetate copolymer); fluoride tree Polyacetal (POM, Polyacetal); grafted polyphenylene ether resin; polyphenylene sulfide resin (PPS, polyphenylene sulfide); polyurethane; polyamide (PA, Polyamide); poly-p-phenylene Polyester resin such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polycarbonate (PC, Polycarbonate), polyacrylate, polyfluorene, polyether ether ketone (PEEK, Polyetheretherketone); polyether oxime (PES, Polyethersulfone); aromatic polyester resin; diallyl phthalate prepolymer; polyoxyn epoxide; 1,2-polybutadiene (1,2 -BR,1,2-Butadiene rubber);polyisoprene;butadiene/acrylonitrile copolymer; ethylene-methyl methacrylate copolymer; ethylene-propylene-diene rubber (EPDM, Ethylene-Propylene- Diene rubber), Ethylene-Propylene rubber, Nitrile rubber, NBR, Nitrile-Butadiene rubber, Butadiene rubber , Styrene-Butadiene rubber (SBR), chloroprene (CR) Chloroprene rubber, fluoro rubber (FKM, Fluoro Rubber), urethane rubber, acrylic rubber (ACM), rubber rubber (Q, silicone rubber), isoprene rubber (IR, Isoprene rubber), synthetic rubber such as acrylonitrile rubber (NBR, Acrylonitrile rubber). From the viewpoint of moldability, a polyethylene resin, a polypropylene resin, a polystyrene, an ethylene-vinyl alcohol copolymer (EVOH), and a synthetic rubber are preferable, and a polypropylene resin is more preferable. Acrylonitrile-butadiene-styrene copolymer (ABS), ethylene-vinyl alcohol copolymer (EVOH), styrene-butadiene block copolymer (SBS), and styrene-butadiene rubber (SBR).

As a method for producing the thermoplastic polymer composition of the present invention, for example, a thermoplastic stabilizer containing a trehalose as an active ingredient is mixed with a thermoplastic polymer, and the obtained mixture is uniaxial or multiaxial. a method of melt-kneading in an extruder; adding a solution in which the thermoplastic polymer containing trehalose as an active ingredient is preliminarily dissolved or suspended in a solvent by using a processing stabilizer containing trehalose as an active ingredient, and then The method of solvent distillation removal, and the like.

Here, it is preferably 0.001 to 5 parts by weight, more preferably 0.02 to 2 parts by weight, even more preferably 0.02 to 1 part by weight, still more preferably 0.05, based on 100 parts by weight of the thermoplastic polymer. ~0.5 parts by weight of trehalose, a processing stabilizer for thermoplastic polymers.

Further, when the processing stabilizer for the thermoplastic polymer is composed only of trehalose, the above additive may be additionally formulated separately from the processing stabilizer for the thermoplastic polymer. Specifically, a method of obtaining a pelletized thermoplastic polymer composition by mixing granules of trehalose, an additive, and a thermoplastic polymer with a Banbury mixer or the like, and then performing extrusion molding may be mentioned.

The thermoplastic polymer composition thus obtained can be further shaped into a product such as a film, a molding material or a tube.

The thermoplastic polymer composition of the present invention is excellent in processing stability. Here, the processing stability of the composition can be evaluated by kneading the composition by a closed type kneader, continuously recording the resistance value (torque) at this time, and measuring the resistance value from the start of the kneading. The time until the maximum is reached (build up time). The longer the growth time, the more excellent the processing stability.

Example

Hereinafter, the present invention will be described in more detail by way of examples.

Example 1

100 parts by weight of styrene-butadiene block copolymer [Asaflex (registered trademark) 830] was mixed with trehalose [manufactured by Tokyo Chemicals Co., Ltd.] 0.24 parts by weight, using Toyo Seiki Co., Ltd. The sealed kneader (4C-150) manufactured by the company was kneaded under a nitrogen atmosphere at 250 ° C and a rotation speed of 100 rpm to obtain a thermoplastic polymer composition of the present invention.

(Evaluation of processing stability under dynamic conditions)

The kneading of Example 1 was continued, and the time until the torque of the sealed kneader reached the maximum value was measured as the growth time, and as a result, it was 161 minutes.

Comparative example 1

(Evaluation of processing stability under dynamic conditions)

The growth time was measured in the same manner as in Example 1 except that trehalose was not used, and it was 42 minutes.

Comparing the growth time, Example 1 was longer than Comparative Example 1, and it was found that the thermoplastic polymer composition of the present invention is excellent in processing stability.

Example 2

100 parts by weight of styrene-butadiene rubber [manufactured by JSR Co., Ltd., grade 1500] and 0.1 parts by weight of trehalose [manufactured by Tokyo Chemicals Co., Ltd.], and sealed type manufactured by Toyo Seiki Seisakusho Co., Ltd. The kneading machine (4C-150) was kneaded under a nitrogen atmosphere at 200 ° C and a rotation speed of 100 rpm to obtain a thermoplastic polymer composition of the present invention.

(Evaluation of processing stability under dynamic conditions)

The kneading of Example 2 was continued, and the time until the torque of the sealed kneader reached the maximum value was measured as the growth time, and as a result, it was 16 minutes.

Comparative example 2

(Evaluation of processing stability under dynamic conditions)

The growth time was measured in the same manner as in Example 2 except that trehalose was not used, and it was 9.7 minutes.

Comparing the growth time, Example 2 was longer than Comparative Example 2, and it was found that the thermoplastic polymer composition of the present invention is excellent in processing stability.

Example 3

100 parts of ethylene-vinyl alcohol copolymer (hereinafter abbreviated as EVOH) manufactured by Kuraray Co., Ltd. (hereinafter referred to as EVOH) was dry-blended with 0.3 parts of trehalose, and a single-axis extruder with a screw diameter of 30 mm (manufactured by Tanabe Plastics Co., Ltd., VS30) was used. The -28 type extruder was kneaded at 230 ° C and a screw rotation speed of 50 rpm to obtain pellets of the thermoplastic polymer composition.

Example 4

After 100 parts of polypropylene (hereinafter referred to as PP) manufactured by Sumitomo Chemical Co., Ltd. and 0.1 parts of trehalose were dry blended, a single-axis extruder with a screw diameter of 30 mm (manufactured by Tanabe Plastics Co., Ltd., Model VS30-28) was used. The extruder was kneaded at 230 ° C and a screw rotation speed of 50 rpm to obtain pellets of the thermoplastic polymer composition.

Comparative example 3, 4

Granules of the thermoplastic polymer composition were obtained by the same methods as in Examples 3 and 4, except that trehalose was not added in Examples 3 and 4.

(Evaluation of processing stability under static conditions)

For the pellets obtained in each of Examples 3 and 4 and Comparative Examples 3 and 4, the retention MFR test was carried out as the workability evaluation during the operation at the time of extrusion processing. The test was carried out by setting the inside of the cylinder of the melt indexer (L217-E14011, manufactured by Techno Seven Co., Ltd.) to 270 ° C according to JIS K 7210, and filling the thermoplastic polymer composition into the cylinder. The MFR at a load of 2.16 kg was measured, and the thermoplastic polymer composition was allowed to remain in the tank for 30 minutes, and the MFR at a load of 2.16 kg was measured. The results are shown in Table 1.

The so-called MFR variation rate in Table 1 is a value obtained by the following formula. The smaller the MFR variation rate of EVOH and PP, the better the processability. MFR change rate (%) =

(MFR value after 30 minutes of retention - MFR value before retention) Absolute value / MFR value before retention × 100

The MFR variation rate was compared, and Example 3 was smaller than Comparative Example 3 and Example 4 and Comparative Example 4, and it was found that the thermoplastic polymer composition of the present invention was excellent in processing stability.

[Industrial availability]

Since the thermoplastic polymer composition of the present invention is excellent in processing stability, it can be suitably molded into a product such as a film, a molding material or a tube.

Claims (4)

A thermoplastic polymer composition comprising trehalose and a thermoplastic polymer, wherein the thermoplastic polymer is a polypropylene resin, an acrylonitrile-butadiene-styrene copolymer, an ethylene-vinyl alcohol copolymer, a styrene-butyl The diene block copolymer or the styrene-butadiene rubber contains 0.02 to 1 part by weight of trehalose per 100 parts by weight of the thermoplastic polymer. The composition of claim 1, wherein 0.05 to 0.5 part by weight of trehalose is contained with respect to 100 parts by weight of the thermoplastic polymer. A processing stabilizer for thermoplastic polymers containing trehalose as an active ingredient, the thermoplastic polymer being a polypropylene resin, an acrylonitrile-butadiene-styrene copolymer, an ethylene-vinyl alcohol copolymer, styrene- Butadiene block copolymer or styrene-butadiene rubber. A use of trehalose for improving the processing stability of a thermoplastic polymer which is a polypropylene resin, an acrylonitrile-butadiene-styrene copolymer, an ethylene-vinyl alcohol copolymer, styrene a butadiene block copolymer or a styrene-butadiene rubber.