WO2013015430A1 - Thermoplastic resin composition - Google Patents

Abstract

The present invention provides a thermoplastic resin composition, which contains (A) a thermoplastic resin, (B) a compound represented by formula (I), and (C) a carbon black, and wherein the component (C) is contained in an amount of 2-250 parts by weight per 1 part by weight of the component (B). (In the formula, each of R¹, R², R⁵, R⁶, R⁷ and R⁸ represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl group or a phenyl group; each of R³ and R⁴ represents a hydrogen atom or an alkyl group; X¹ represents a single bond, a sulfur atom or a -CHR⁹- group; R⁹ represents a hydrogen atom, an alkyl group or a cycloalkyl group; A¹ represents an alkanediyl group or a *-COR¹⁰- group; R¹⁰ represents a single bond or an alkanediyl group; * represents a bonding hand with -O-; and one of Y¹ and Z¹ represents a hydroxyl group, an alkoxy group or an aralkyloxy group, and the other represents a hydrogen atom or an alkyl group.)

Description

Thermoplastic resin composition

The present invention relates to a thermoplastic resin composition and the like.

JP2001-106832-A includes a thermoplastic resin, [6- [3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propoxy] -2,4,8,10-tetra-tert-butyldibenz. [D, f] [1,3,2] dioxaphosphine] and carbon black, and the content of carbon black is [6- [3- (3-t-butyl-4-hydroxy-5]. -Methylphenyl) propoxy] -2,4,8,10-tetra-t-butyldibenzo [d, f] [1,3,2] dioxaphosphine] 0.83 parts by weight per part by weight A thermoplastic resin composition is described.
Patent Document 1 discloses a thermoplastic resin, [6- [3- (3-t-butyl-4-hydroxy-5-methylphenyl) propoxy] -2,4,8,10-tetra-t-butyl. Dibenzo [d, f] [1,3,2] dioxaphosphine] and carbon black, and the content of carbon black is [6- [3- (3-t-butyl-4-hydroxy-]. 5-methylphenyl) propoxy] -2,4,8,10-tetra-t-butyldibenz [d, f] [1,3,2] dioxaphosphine] 1.67 parts by weight per 1 part by weight A thermoplastic resin composition is described.

In conventional thermoplastic resin compositions, the amount of gel generated due to thermal deterioration is large, and the processing stability may not always be sufficiently satisfactory.

［式中、Ｒ^１、Ｒ^２、Ｒ^５、Ｒ^６、Ｒ^７及びＲ^８は、それぞれ独立に、水素原子、炭素数１~８のアルキル基、炭素数５~８のシクロアルキル基、炭素数６~１２のアルキルシクロアルキル基、炭素数７~１２のアラルキル基又はフェニル基を表す。
　Ｒ^３及びＲ^４は、それぞれ独立に、水素原子又は炭素数１~８のアルキル基を表す。
　Ｘ^１は、単結合、硫黄原子又は−ＣＨＲ^９−基を表し、Ｒ^９は、水素原子、炭素数１~８のアルキル基又は炭素数５~８のシクロアルキル基を表す。
　Ａ^１は、炭素数２~８のアルカンジイル基又は＊−ＣＯＲ^１０−基を表し、Ｒ^１０は、単結合又は炭素数１~８のアルカンジイル基を表し、＊は、−Ｏ−との結合手を表す。
　Ｙ^１及びＺ^１は、いずれか一方がヒドロキシル基、炭素数１~８のアルコキシ基又は炭素数７~１２のアラルキルオキシ基を表し、他方が水素原子又は炭素数１~８のアルキル基を表す。］ The present invention includes the following inventions.
[1] containing (A) a thermoplastic resin, (B) a compound represented by the formula (I), and (C) carbon black,
A thermoplastic resin composition having a content of (C) of 2 to 250 parts by weight per 1 part by weight of (B).
Formula (I):

[Wherein R ¹ , R ² , R ⁵ , R ⁶ , R ⁷ and R ⁸ are each independently a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, carbon Represents an alkylcycloalkyl group having 6 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, or a phenyl group.
R ³ and R ⁴ each independently represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms.
X ¹ represents a single bond, a sulfur atom or a —CHR ⁹ — group, and R ⁹ represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms or a cycloalkyl group having 5 to 8 carbon atoms.
A ¹ represents an alkanediyl group having 2 to 8 carbon atoms or * —COR ¹⁰ — group, R ¹⁰ represents a single bond or an alkanediyl group having 1 to 8 carbon atoms, and * represents —O— Represents a bond.
Y ¹ and Z ^{1 each} represents a hydroxyl group, an alkoxy group having 1 to 8 carbon atoms or an aralkyloxy group having 7 to 12 carbon atoms, and the other represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. . ]

[2] Y ¹ is a hydroxyl group, and at least one of R ⁷ and R ⁸ is an alkyl group having 3 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, an alkylcycloalkyl group having 6 to 12 carbon atoms, The thermoplastic resin composition according to [1], which is an aralkyl group or a phenyl group having 7 to 12 carbon atoms.

[3] The thermoplastic resin composition according to [1] or [2], wherein (A) is polyethylene.

According to the thermoplastic resin composition of the present invention, the amount of gel generated due to thermal deterioration is small, and the processing stability is excellent.

<(A) Thermoplastic resin>
Examples of (A) include the following.
(1) Polyethylene, for example, high density polyethylene (HD-PE), low density polyethylene (LD-PE), linear low density polyethylene (LLDPE), (2) polypropylene, (3) methylpentene polymer, (4) EEA (Ethylene / ethyl acrylate copolymer) resin, (5) ethylene / vinyl acetate copolymer resin, (6) polystyrenes such as polystyrene, poly (p-methylstyrene) and poly (α-methylstyrene), (7) AS (acrylonitrile / styrene copolymer) resin, (8) ABS (acrylonitrile / butadiene / styrene copolymer) resin, (9) AAS (special acrylic rubber / acrylonitrile / styrene copolymer) resin, (10) ACS (acrylonitrile / chlorine) Polyethylene / styrene copolymer) resin,

(11) Chlorinated polyethylene, polychloroprene and chlorinated rubber, (12) polyvinyl chloride and polyvinylidene chloride, (13) methacrylic resin, (14) ethylene / vinyl alcohol copolymer resin, (15) fluororesin, (16 ) Polyacetal, (17) grafted polyphenylene ether resin and polyphenylene sulfide resin, (18) polyurethane, (19) polyamide, (20) polyester resin such as polyethylene terephthalate and polybutylene terephthalate, (21) polycarbonate, (22) poly Acrylate, (23) polysulfone, polyetheretherketone and polyethersulfone, (24) aromatic polyester resin, (25) diallyl phthalate prepolymer, (26) silicone resin, (27) 1,2-poly Butadiene, (28) polyisoprene, (29) styrene / butadiene copolymer, (30) butadiene / acrylonitrile copolymer, (31) ethylene / propylene copolymer, (32) ethylene / MMA (methyl methacrylate) copolymer Coalescence.

As (A), the resin of the said illustration can be used individually or in mixture.
As (A), polyolefins such as polyethylene (for example, HD-PE, LD-PE, LLDPE) and polypropylene are preferable, and polyethylene is particularly preferable.

The method for producing the thermoplastic resin is not particularly limited. For example, the thermoplastic resin may be obtained by radical polymerization, and uses a catalyst containing a metal of Group IVb, Group Vb, Group VIb or Group VIII of the periodic table. It may be produced by polymerization.
The metal-containing catalyst may be a metal complex having one or more ligands, for example, an oxide coordinated by a π bond or a σ bond, a halogen compound, an alcoholate, an ester, an aryl, These complexes may be used as they are or may be supported on a base material such as magnesium chloride, titanium chloride, alumina, or silicon oxide.
For example, in the production of polyolefins, for example, Ziegler-Natta catalysts, metallocene catalysts, Phillips catalysts and the like are preferably used.

<(B) Compound represented by formula (I)>
Examples of the alkyl group having 1 to 8 carbon atoms include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, and isopentyl. Group, n-hexyl group, n-heptyl group, n-octyl group and the like.
Examples of the cycloalkyl group having 5 to 8 carbon atoms include a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, and the like.
Examples of the alkylcycloalkyl group having 6 to 12 carbon atoms include a methylcyclopentyl group, a methylcyclohexyl group, a methylcycloheptyl group, and a methylcyclooctyl group.
Examples of the aralkyl group having 7 to 12 carbon atoms include benzyl group, phenylethyl group, phenylpropyl group, trityl group, naphthylmethyl group, naphthylethyl group and the like.

Examples of the alkanediyl group having 1 to 8 carbon atoms include methylene group, ethylene group, trimethylene group, tetramethylene group, pentamethylene group, hexamethylene group, isopropylene group, isobutylene group, 2-methyltrimethylene group, isopentylene group, An isohexylene group, an isooctylene group, a 2-ethylhexylene group, etc. are mentioned.
Examples of the cycloalkanediyl group having 5 to 8 carbon atoms include a cyclopentylene group, a cyclohexylene group, a cycloheptylene group, and a cyclooctylene group.

Examples of the alkoxy group having 1 to 8 carbon atoms include methoxy group, ethoxy group, n-propoxy group, isopropyloxy group, n-butyloxy group, sec-butyloxy group, tert-butyloxy group, n-pentyloxy group, and n-hexyl. An oxy group etc. are mentioned.
Examples of the aralkyloxy group having 7 to 12 carbon atoms include benzyloxy group, phenylethyloxy group, phenylpropyloxy group, trityloxy group, naphthylmethyloxy group, naphthylethyloxy group and the like.

A particularly preferable compound among (B) is 6- [3- (3-t-butyl-4-hydroxy-5-methylphenyl) propoxy] -2,4,8,10-tetra-t-butyldibenz [d, f] [1,3,2] dioxaphosphine (hereinafter referred to as (B-1)), 6- [3- (3,5-di-t-butyl-4-hydroxyphenyl) propoxy] -2 , 4,8,10-tetra-tert-butyldibenz [d, f] [1,3,2] dioxaphosphine, 6- [3- (3,5-di-tert-butyl-4-hydroxyphenyl) ) Propoxy] -4,8-di-t-butyl-2,10-dimethyl-12H-dibenzo [d, g] [1,3,2] dioxaphosphocin, 6- [3- (3,5- Di-t-butyl-4-hydroxyphenyl) propionyloxy] -4,8-di-t Butyl-2,10-dimethyl-12H-dibenzo [d, g] [1,3,2] dioxaphosphocin and the like, and the most preferred compound is 6- [3- (3-t-butyl-4-hydroxy -5-methylphenyl) propoxy] -2,4,8,10-tetra-t-butyldibenz [d, f] [1,3,2] dioxaphosphine.
The content of (B) is 0.001 to 1 part by weight, preferably 0.01 to 0.5 part by weight, more preferably 0.03 to 0.5 part per 100 parts by weight of (A). Parts by weight, particularly preferably 0.03 to 0.3 parts by weight.

<(C) Carbon black>
Examples of (C) include thermal black, furnace black, acetylene black, ketjen black and the like.
The content of (C) is 0.01 to 5 parts by weight, preferably 0.3 to 5 parts by weight, per 100 parts by weight of (A).

(B) The content of (C) with respect to 1 part by weight is 2 to 250 parts by weight, more preferably 3 to 250 parts by weight, still more preferably 3 to 60 parts by weight, and particularly preferably 15 to 60 parts by weight.
(B) If the content of (C) with respect to 1 part by weight is 2 parts by weight or more, it is possible to sufficiently improve the processing stability by using (B) and (C) together, and at 250 parts by weight or less. If so, the amount of carbon black does not become excessive, and the processing of (A) becomes easy.

The thermoplastic resin composition of the present invention may further contain an inorganic pigment, an antioxidant, a light stabilizer, a neutralizing agent, a lubricant, an antistatic agent, a flame retardant, a crosslinking agent and the like.

<Inorganic pigment>
Examples of the inorganic pigment include titanium oxide (titanium white), zinc white, dial, calcium carbonate, and aluminum hydroxide.

<Antioxidant>
Examples of the antioxidant (but different from (B)) include (D) phosphorus antioxidants, phenol antioxidants, sulfur antioxidants, and the like.

［式（ＩＩ）中、Ｒ^１１及びＲ^１２は、それぞれ独立に、水素原子、炭素数１~８のアルキル基、炭素数５~８のシクロアルキル基、炭素数６~１２のアルキルシクロアルキル基、炭素数７~１２のアラルキル基又はフェニル基を表す。］
　炭素数１~８のアルキル基、炭素数５~８のシクロアルキル基、炭素数６~１２のアルキルシクロアルキル基、炭素数７~１２のアラルキル基としては、式（Ｉ）において例示した基と同様のものが挙げられる。 <(D) Phosphorous antioxidant>
Examples of (D) include compounds represented by the following formulas (II) to (IV).
Formula (II):

[In the formula (II), R ¹¹ and R ¹² are each independently a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, or an alkylcycloalkyl group having 6 to 12 carbon atoms. Represents an aralkyl group or a phenyl group having 7 to 12 carbon atoms. ]
Examples of the alkyl group having 1 to 8 carbon atoms, the cycloalkyl group having 5 to 8 carbon atoms, the alkylcycloalkyl group having 6 to 12 carbon atoms, and the aralkyl group having 7 to 12 carbon atoms include those exemplified in the formula (I): The same thing is mentioned.

Formula (III):

[In the formula (III), R ¹³ , R ¹⁴ , R ¹⁵ and R ¹⁶ are each independently a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, or 6 to 6 carbon atoms. 12 represents an alkylcycloalkyl group, an aralkyl group having 7 to 12 carbon atoms, or a phenyl group.
m and n each independently represents an integer of 0 to 2, and when m is 2, two R ¹³ may be the same or different, and when n is 2, two R ¹⁵ May be the same or different. ]

Examples of the alkyl group having 1 to 8 carbon atoms, the cycloalkyl group having 5 to 8 carbon atoms, the alkylcycloalkyl group having 6 to 12 carbon atoms, and the aralkyl group having 7 to 12 carbon atoms include those exemplified in the formula (I): The same thing is mentioned.

Formula (IV):

[In Formula (IV), R ¹⁷ and R ¹⁸ each independently represents a hydrogen atom or a methyl group. ]

Among the compounds represented by the formulas (II) to (IV), particularly preferred compounds are tris (2,4-di-t-butylphenyl) phosphite (hereinafter referred to as D-1), bis (2,4 -Di-t-butylphenyl) pentaerythritol diphosphite, bis (2,6-di-t-butyl-4-methylphenyl) pentaerythritol diphosphite, bis (2,4-di-t-cumylphenyl) penta Erythritol diphosphite and tetrakis (2,4-di-t-butylphenyl) -4,4′-biphenylene diphosphonite.
The content of (D) is preferably 1 part by weight or less, particularly preferably 0.3 part by weight or less, per 100 parts by weight of (A).

<Phenolic antioxidants and sulfur antioxidants>
Examples of the phenol-based antioxidant and the sulfur-based antioxidant include 2,6-di-t-butyl-4-methylphenol and n-octadecyl 3- (3,5-di-t-butyl-4- Hydroxyphenyl) propionate, pentaerythrityl tetrakis (3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate), triethylene glycol bis (3- (3-t-butyl-5-methyl-4) -Hydroxyphenyl) propionate), 1,3,5-trimethyl-2,4,6-tris (3,5-di-t-butyl-4-hydroxybenzyl) benzene, tris (3,5-di-t- Butyl 4-hydroxybenzyl) isocyanurate [hereinafter referred to as AO-1], 1,3,5-tris (4-tert-butyl-3-hydroxy-2,6-di) Tilbenzyl) -1,3,5-triazine-2,4,6- (1H, 3H, 5H) -trione [hereinafter referred to as AO-2], 3,9-bis (2- (3- (3-t -Butyl-4-hydroxy-5-methylphenyl) propionyloxy) -1,1-dimethylethyl) -2,4,8,10-tetraoxaspiro [5.5] undecane, 2,2'-methylenebis (6 -T-butyl-4-methylphenol), 4,4'-butylidenebis (6-t-butyl-3-methylphenol), 4,4'-thiobis (6-t-butyl-3-methylphenol), 2 -T-butyl-6- (3-t-butyl-2-hydroxy-5-methylbenzyl) -4-methylphenyl acrylate, 2- (1- (2-hydroxy-3,5-t-amylphenyl) ethyl ) -4,6-Di- Examples include t-amylphenyl acrylate, dialkyl (C _12-18 ) 3,3′-thiodipropionate, pentaerythrityl tetrakis (3-laurylthiopropionate), and the like.

<Light stabilizer>
Examples of the light stabilizer include bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, dimethyl oxalate, 1- (2-hydroxyethyl) -4-hydroxy-2,2,6,6- Tetramethylpiperidine polycondensate [hereinafter referred to as H-1], poly [{6- (1,1,3,3, -tetramethylbutyl) amino-1,3,5-triazine-2,4-diyl} {(2,2,6,6-tetramethyl-4-piperidyl) imino} hexamethylene {(2,2,6,6-tetramethyl-4-piperidyl) imino}] [hereinafter referred to as H-2], 2-hydroxy-4-n-octoxybenzophenone, 2- (2-hydroxy-5-methylphenyl) benzotriazole, 2- (3-tert-butyl-2-hydroxy-5-methylphenyl) -5-chlorobenzo Triazo Le, 2,4-di -t- butylphenyl 3,5-di -t- butyl-4-hydroxybenzoate, and the like.

<Neutralizing agent>
Examples of the neutralizing agent include synthetic hydrotalcite, natural hydrotalcite, calcium hydroxide and the like.
<Lubricant>
Examples of the lubricant include paraffin, polyethylene wax, stearic acid, butyl stearate, stearyl alcohol, calcium stearate and hardened castor oil.
<Antistatic agent>
Antistatic agents include cationic antistatic agents such as primary amine salts, tertiary amine salts, quaternary amine salts and pyridine derivatives; sulfated oils, soaps, sulfated ester oils, sulfated amide oils, Olefin sulfate salts, fatty alcohol sulfate esters, alkyl sulfate esters, fatty acid ethyl sulfonates, alkyl naphthalene sulfonates, alkyl benzene sulfonates, oxalate ester sulfonates and phosphate ester salts Antistatic agent: Partial fatty acid ester of polyhydric alcohol, ethylene oxide adduct of fatty alcohol, ethylene oxide adduct of fatty acid, ethylene oxide adduct of fatty amino or fatty acid amide, ethylene oxide adduct of alkylphenol, polyhydric alcohol Partially fatty acid ethylene Kisaido adduct and nonionic antistatic agents such as polyethylene glycol; antistatic agents amphoteric system such as carboxylic acid derivatives and imidazoline derivatives.

<Flame Retardant>
Examples of the flame retardant include aluminum hydroxide, magnesium hydroxide, hydrotalcite, bromine flame retardant, antimony trioxide, polyphosphate flame retardant, magnesium carbonate, calcium carbonate, silica, talc, zeolite, and clay. Can be mentioned.

<Crosslinking agent>
Examples of the crosslinking agent include organic peroxides such as 2,5-dimethylhexane, 2,5-dihydroperoxide, 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane, 3-di-t-butyl peroxide; t-dicumyl peroxide, 2,5-dimethyl-2,5-bis (t-butylperoxy) hexane, 2,5-dimethyl-2,5-di (tert -Butylperoxy) hexyne, 3,5-dimethyl-2,5- (t-butylperoxy) hexane, 2,5-dimethyl-2,5-di- (t-butyl-peroxy) hexane-3, 4 , 4'-bis (t-butylperoxy) diisopropylbenzene, dicumyl peroxide, t-butylcumyl peroxide, α, α'-bis (tert-butylperoxyisopropyl ) Benzene, α, α′-bis (tert-butylperoxy) diisopropylbenzene, n-butyl-4,4-bis (t-butylperoxy) butane, 2,2-bis (tert-butylperoxy) butane 1,1-bis (t-butylperoxy) cyclohexane, 1,1-bis (tert-butylperoxy) 3,3,5-trimethylcyclohexane, 1,1-di (t-butylperoxy) -2 -Methylcyclohexane, 2,2-di [4,4-di- (t-butylperoxy) cyclohexyl] propane, tert-butylperoxybenzoate, benzoyl peroxide, t-hexylperoxyisopropylmonocarbonate, t-butyl Peroxymaleic acid, t-butylperoxy-3,5,5-trimethylhexanoate, t- Chill peroxylaurate, t- butyl peroxy isopropyl monocarbonate, t- butyl peroxy-2-ethylhexyl monocarbonate, t-hexyl peroxybenzoate, and the like. These may be used alone or in combination of two or more.

<Manufacturing method>
In the method for producing the thermoplastic resin composition of the present invention, examples of the apparatus used for the production include a mixer such as a tumbler blender, a Henschel mixer, and a super mixer, a single-screw or multi-screw extruder, a kneader, a Banbury mixer, and the like. Can be mentioned.
The thermoplastic resin composition of the present invention is prepared by, for example, uniformly mixing (A), (B), and (C) with a mixer such as a tumbler blender, a Henschel mixer, or a super mixer in advance, It can be produced by a method of melt kneading and granulating with a multi-screw extruder, a method of granulating with an extruder after melt kneading with a kneader, a Banbury mixer or the like.

<Application>
The thermoplastic resin composition of the present invention has a small amount of gel generated due to thermal deterioration and is excellent in processing stability.
The thermoplastic resin composition of the present invention is processed into, for example, a wire covering material, an automobile part, a marine part, an electric / electronic part part, and an electric insulation part.

Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples, but the present invention is not limited to these examples. Parts means weight basis unless otherwise specified.

Example 1
100 parts of polyethylene (LDPE F-218 manufactured by Sumitomo Chemical Co., Ltd.) and (B-1) [6- [3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propoxy] -2,4,8, 10 parts of 10-tetra-t-butyldibenzo [d, f] [1,3,2] dioxaphosphine] and 3 parts of carbon black were combined with Laboplastyl (trade name “4C-150”, Toyo Using a Seiki Co., Ltd.) under a nitrogen atmosphere at 180 ° C. and a rotation speed of 50 rpm, the time until the torque of the lab plast mill reaches the maximum value was measured as a gel build-up time. The longer the gel build-up time, the smaller the amount of gel generated due to thermal degradation, and the better the processing stability. The results are shown in Table 1.

In Examples 2 to 4 and Comparative Examples 1 to 3, the gel buildup time was measured in the same manner as in Example 1 except that the amounts of (B-1) and carbon black were changed as shown in Table 1. .

According to the thermoplastic resin composition of the present invention, the amount of gel generated due to thermal deterioration is small, and the processing stability is excellent.

Claims (3)

(A) a thermoplastic resin, (B) a compound represented by the formula (I), and (C) carbon black,
A thermoplastic resin composition having a content of (C) of 2 to 250 parts by weight per 1 part by weight of (B).
Formula (I):

[Wherein R ¹ , R ² , R ⁵ , R ⁶ , R ⁷ and R ⁸ are each independently a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, carbon Represents an alkylcycloalkyl group having 6 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, or a phenyl group.
R ³ and R ⁴ each independently represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms.
X ¹ represents a single bond, a sulfur atom or a —CHR ⁹ — group, and R ⁹ represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms or a cycloalkyl group having 5 to 8 carbon atoms.
A ¹ represents an alkanediyl group having 2 to 8 carbon atoms or * —COR ¹⁰ — group, R ¹⁰ represents a single bond or an alkanediyl group having 1 to 8 carbon atoms, and * represents —O— Represents a bond.
Y ¹ and Z ^{1 each} represents a hydroxyl group, an alkoxy group having 1 to 8 carbon atoms or an aralkyloxy group having 7 to 12 carbon atoms, and the other represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. . ] Y ¹ is a hydroxyl group, and at least one of R ⁷ and R ⁸ is an alkyl group having 3 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, an alkylcycloalkyl group having 6 to 12 carbon atoms, or a carbon number of 7 The thermoplastic resin composition according to claim 1, wherein the thermoplastic resin composition is -12 aralkyl group or phenyl group. (A) is polyethylene, The thermoplastic resin composition of Claim 1 or 2.