JP4965244B2 - Thermoplastic resin composition and molded article thereof - Google Patents

Description

  The present invention relates to a thermoplastic resin composition and a molded article thereof, and more particularly to an organopolysiloxane-containing thermoplastic resin composition capable of forming a molded article in which appearance defects are suppressed even after prolonged outdoor exposure.

  Thermoplastic resins are used as interior and exterior parts for automobiles and exterior parts for home appliances because they can be recycled. However, this type of thermoplastic resin, in particular thermoplastic resin elastomer, has the disadvantage that it is inferior in surface lubricity and wear resistance, and its surface is easily scratched. In order to eliminate such drawbacks, a composition in which an organopolysiloxane is blended with a thermoplastic resin elastomer has been proposed. For example, Japanese Patent Laid-Open No. 2000-109702 proposes an abrasion-resistant thermoplastic resin composition in which silicone oil and / or silicone polymer and silicone powder are blended into an olefinic thermoplastic elastomer.

JP 2000-109702 A

  However, the present inventors have whitened the surface of the molded body due to the organopolysiloxane transferred to the surface of the molded body when the molded body composed of the thermoplastic resin composition containing the organopolysiloxane is exposed outdoors for a long period of time. It has been found that appearance defects such as may occur.

  An object of the present invention is to provide a thermoplastic resin composition capable of forming a molded article having sufficient surface lubricity and at the same time, the occurrence of the above-mentioned appearance defects being suppressed.

  The present invention provides a thermoplastic resin composition characterized by comprising (A) a thermoplastic resin, (B) an organopolysiloxane, and (C) a metal harm preventing agent, and a molded article thereof.

  The component (A) is preferably a polyolefin-based thermoplastic elastomer.

(B) described above as the component represented by the following average unit ^formula: _R 1 _{a SiO} in _{(4-a) / 2} {wherein, ^{R 1} is a monovalent hydrocarbon group having 1 to 10 carbon atoms, a is 1.95 It is a number of ~ 2.05. }, An organopolysiloxane having a kinematic viscosity at 25 ° C. of 100,000 mm ² / sec or more is preferred. Moreover, it is preferable to mix | blend the said (B) component in 0.1-50 mass parts with respect to 100 mass parts of said (A) component.

  The component (C) is preferably at least one metal harm preventing agent selected from the group consisting of hydrazide compounds, aminotriazole compounds and amino group-containing triazine compounds. Moreover, it is preferable to mix | blend the said (C) component in 0.05-10 mass parts with respect to 100 mass parts of total amounts of the said (A) component and (B) component.

  The thermoplastic resin composition of the present invention comprises (A) a thermoplastic resin, (B) an organopolysiloxane, and (C) a metal harm preventing agent, so that the molded article has excellent surface lubricity and has an appearance after long-term outdoor exposure. It has the feature that the occurrence of defects is suppressed.

  The thermoplastic resin as the component (A) is a main component of the thermoplastic resin composition of the present invention, and may be any organic resin that is solid at room temperature but plastically deforms as the temperature rises. It is not limited. In addition, (A) component may be comprised from a single thermoplastic resin, and the mixture of two or more types of thermoplastic resins may be sufficient as it.

  Such (A) thermoplastic resins include polyethylene (PE) resin, low density polyethylene (LDPE) resin, high density polyethylene resin, ultra high molecular weight polyethylene (UHMPE) resin, polypropylene (PP) resin, polymethylpentene resin (MPX). ), Polyolefin resins such as ethylene- (meth) acrylic acid ester copolymer resins, ethylene-vinyl acetate copolymers (EVA), polypropylene-ethylene copolymers; acrylic resins such as polymethyl methacrylate (PMMA) resins Vinyl resin; polystyrene (PS) resin, high impact polystyrene (HIPS) resin, acrylonitrile-butadiene-styrene (ABS) copolymer resin, acrylonitrile-styrene (AS) copolymer resin, acrylonitrile-acrylic rubber-styrene (AAS) Styrene vinyl resins such as composite resins, acrylonitrile-ethylene propylene rubber-styrene (AES) copolymer resins; polyvinyl acetate resins, polyvinyl chloride (PVC) resins, polyvinylidene chloride (PVDC) resins, polyvinyl alcohol resins (PVA) Other vinyl resins such as polytetrafluoroethylene resin (PTFE); polyester resins such as polybutylene terephthalate (PBT) resin and polyethylene terephthalate (PET) resin; nylon 6, nylon 66, nylon 610, nylon 11 and nylon 12 Polyamide resin such as polyacetal (POM), polycarbonate (PC) resin, modified polyphenylene ether (modified PPE) resin, polyvinyl acetate (PVAC) resin, polysulfone PSU) resin, polyethersulfone (PES) resin, polyphenylene sulfide (PPS) resin, polyarylate (PAR) resin, polyamideimide (PAI) resin, polyetherimide (PEI) resin, polyetheretherketone (PEEK) resin , Polyimide (PI) resin, liquid crystal polyester (LCP) resin, and copolymers thereof.

  The thermoplastic resins called thermoplastic elastomers include polyolefin-based thermoplastic elastomers, polystyrene-based thermoplastic elastomers, polyamide-based thermoplastic elastomers, polyester-based thermoplastic elastomers, polyvinyl chloride-based thermoplastic elastomers, polyurethane-based resins. Examples are thermoplastic elastomers and fluoropolymer thermoplastic elastomers.

  Among these, from the viewpoint of easy molding and flexibility of the molded article, polyolefin-based thermoplastic elastomers and polystyrene-based thermoplastic elastomers are preferable, and polyolefin-based thermoplastic elastomers are particularly preferable.

  As the polyolefin-based thermoplastic elastomer, polyethylene or polypropylene is used as a hard phase, and EPT such as EPT or EPM that is dynamically cross-linked using a peroxide or other cross-linking agent, or a soft cross-linked type using butyl rubber as a soft phase. Examples thereof include polyolefin-based thermoplastic elastomers. Such a polyolefin-based thermoplastic elastomer is commercially available from AES Japan Co., Ltd. under the trade name of Santoprene. A polyolefin-based thermoplastic elastomer obtained by dynamically cross-linking such a soft layer is excellent in the heat resistance, weather resistance, and various mechanical properties of the molded product, and therefore is preferably used as the main component of the thermoplastic resin composition of the present invention. Can do.

  Examples of polyolefin-based thermoplastic elastomers include polyolefin-based thermoplastic elastomers called polymer blend types or polymer alloy types in which polyethylene or polypropylene is used as the hard phase and EPR such as EPT or EPM or butyl rubber is used as the soft phase. . Such polyolefin-based thermoplastic elastomers are commercially available from Mitsui Petrochemical Co., Ltd. under the trade names of Miralastomer and Gudmer, for example.

  Examples of the polystyrene-based thermoplastic elastomer include block copolymer-type polystyrene-based thermoplastic elastomers having polystyrene as a hard phase and polybutadiene, polyisobutylene or water-added polybutadiene as a soft phase. Examples of such polystyrene-based thermoplastic elastomers are commercially available from Asahi Kasei Kogyo Co., Ltd. under the trade names of Tuftec, Tufprene, Sorprene and Asaprene. A polystyrene-based thermoplastic elastomer obtained by dynamically crosslinking the soft phase as described above with a peroxide or other crosslinking agent is commercially available from Riken Technos Co., Ltd. under the trade name Actimer.

In the present invention, the organopolysiloxane of component (B) is a component for imparting lubricity and scratch resistance to the surface of a molded article formed by molding the composition of the present invention. Preferable (B) organopolysiloxane is represented by an average unit formula: R ¹ _a SiO _{(4-a) / 2} , wherein R ¹ is a substituted or unsubstituted monovalent hydrocarbon having 1 to 10 carbon atoms. And a is a number from 1.95 to 2.05. Examples of the monovalent hydrocarbon group for R ¹ include alkyl groups such as methyl, ethyl, and propyl; alkenyl groups such as vinyl, propenyl, butenyl, and hexenyl; and aryl groups such as phenyl. . Of these, an alkyl group is preferable, and a methyl group is particularly preferable. The component (B) may contain a small amount of hydroxyl groups at the molecular chain ends. In addition, it is preferable that (B) component does not contain hydrolysable reactive groups, such as alkoxy groups, such as a methoxy group and an ethoxy group, and a silazane group. This is because when the hydrolyzable reactive group is present in the component (B), the storage stability of the composition of the present invention may be impaired, or the surface lubricity of the molded body of the composition of the present invention may not be stable. Because there is.

  (B) The molecular structure of the organopolysiloxane may be linear, linear having a partially branched structure, or network, but is preferably linear or linear having a partially branched structure. . Specifically, trimethylsiloxy group-capped dimethylpolysiloxane, trimethylsiloxy group-capped dimethylsiloxane / methylvinylsiloxane copolymer, trimethylsiloxy group-capped dimethylsiloxane / methylphenylsiloxane copolymer, silanol group-capped dimethylpolysiloxane, silanol group Examples thereof include a blocked dimethylsiloxane / methylvinylsiloxane copolymer and a silanol group blocked dimethylsiloxane / methylphenylsiloxane copolymer.

(B) The kinematic viscosity of the organopolysiloxane is not particularly limited, but if the kinematic viscosity at 25 ° C. is 100,000 mm ² / sec or more, the handling workability is excellent, and it is preferable for the surface of the molded body of the composition of the present invention. Since lubricity and scratch resistance can be imparted, it is preferable. (B) The kinematic viscosity at 25 ° C. of the organopolysiloxane is more preferably 500,000 mm ² / sec or more, and it is a semi-solid (gum-like) having a kinematic viscosity at 25 ° C. of 1,000,000 mm ² / sec or more. More preferably.

  The blending amount of the component (B) is preferably in the range of 0.1 to 50 parts by mass, more preferably in the range of 0.5 to 20 parts by mass with respect to 100 parts by mass of the component (A). When the blending amount of the component (B) is less than the above range lower limit, sufficient lubricity cannot be imparted to the surface of the molded article of the composition of the present invention, and the blending amount of the component (B) is above the above range upper limit. This is because the composition of the present invention has a higher adhesiveness and makes it difficult to form a pellet, which may impair handling workability.

  Component (C) is a component that prevents appearance defects such as whitening that occurs on the surface of a molded product when the molded product obtained by molding the thermoplastic resin composition of the present invention is exposed outdoors for a long period of time. is there. Although the mechanism of occurrence of such an appearance defect is not clear, since such an appearance defect is not recognized in the thermoplastic resin composition not blended with the component (B), the surface of the molded body was transferred ( It is expected that the deterioration of the component (B) is promoted and caused by heavy metals such as tin and titanium mixed in a small amount as a polymerization catalyst or a crosslinking agent in the component (A).

  As the component (C), known metal damage inhibitors such as hydrazide compounds, oxalic acid compounds, aminotriazole compounds, benzotriazole compounds, triazine compounds, salicylideneamine compounds, and the like can be used. Ciba Specialty Chemicals Co., Ltd., ADEKA Co., Ltd., SOCTECH S. It can be purchased from A. Among these, hydrazide compounds, aminotriazole compounds, and amino group-containing triazine compounds are preferable.

式中Ｒ^１、Ｒ^２は同一もしくは異なった水素原子、水酸基、アルキル基、置換アルキル基、アリール基、フェノール基などの置換アリール基、アラルキル基、置換アラルキル基を表す。Ｒ^１、Ｒ^２としては、アリール基、またはフェノール基などの置換アリール基を含む一価の単価水素基であることが好ましい。具体的には、Ｎ，Ｎ’−ジホルミルヒドラジン、Ｎ，Ｎ’−ジアセチルヒドラジン、Ｎ，Ｎ’−ジプロピオニルヒドラジン、Ｎ，Ｎ’−ブチリルヒドラジン、Ｎ−ホルミル−Ｎ’−アセチルヒドラジン、Ｎ，Ｎ’−ジベンゾイルヒドラジン、Ｎ，Ｎ’−ジトルオイルヒドラジン、Ｎ，Ｎ’−ジサリチロイルヒドラジン、Ｎ−ホルミル−Ｎ’−サリチロイルヒドラジン、Ｎ−ホルミル−Ｎ’−ブチル置換サリチロイルヒドラジン、Ｎ−アセチル−Ｎ’−サリチロイルヒドラジン、Ｎ，Ｎ’−ビス［３−（３，５−ジ−ｔ−ブチル−４−ヒドロキシフェニル）プロピオニル］ヒドラジン、シュウ酸−ジ−（Ｎ’−サリチロイル）ヒドラジン、アジピン酸−ジ−（Ｎ’−サリチロイル）ヒドラジン、ドデカンジオイル−ジ−（Ｎ’−サリチロイル）ヒドラジンが例示される。市販品としては、イルガノックスＭＤ１０２４（商品名；チバ・スペシャルティ・ケミカルズ（株）製：Ｎ，Ｎ’−ビス［３−（３，５−ジ−ｔ−ブチル−４−ヒドロキシフェニル）プロピオニル］ヒドラジン）、アデカスタブＣＤＡ−６（商品名：（株）ＡＤＥＫＡ製；ドデカンジオイル−ジ−（Ｎ’−サリチロイル）ヒドラジン）が例示される。 The hydrazide compound is preferably a diacyl hydrazide compound represented by the general formula (1).

In the formula, R ¹ and R ² represent the same or different hydrogen atoms, hydroxyl groups, alkyl groups, substituted alkyl groups, aryl groups, substituted aryl groups such as phenol groups, aralkyl groups, and substituted aralkyl groups. R ¹ and R ² are each preferably a monovalent monovalent hydrogen group containing a substituted aryl group such as an aryl group or a phenol group. Specifically, N, N′-diformylhydrazine, N, N′-diacetylhydrazine, N, N′-dipropionylhydrazine, N, N′-butyrylhydrazine, N-formyl-N′-acetylhydrazine, N, N′-dibenzoylhydrazine, N, N′-ditoluoylhydrazine, N, N′-disalicyloylhydrazine, N-formyl-N′-salicyloylhydrazine, N-formyl-N′-butyl Substituted salicyloylhydrazine, N-acetyl-N′-salicyloylhydrazine, N, N′-bis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionyl] hydrazine, oxalic acid— Examples include di- (N'-salicyloyl) hydrazine, adipic acid-di- (N'-salicyloyl) hydrazine, dodecandioyl-di- (N'-salicyloyl) hydrazine. . As a commercially available product, Irganox MD1024 (trade name; manufactured by Ciba Specialty Chemicals Co., Ltd .: N, N′-bis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionyl] hydrazine ), Adekastab CDA-6 (trade name: manufactured by ADEKA Corporation; dodecanedioyl-di- (N′-salicyloyl) hydrazine).

式中Ｒ^４、Ｒ^５は同一もしくは異なった水素原子、アルキル基、置換アルキル基、置換アリール基、カルボキシル基、アシル基、アルキルエステル基、アリルエステル基、ハロゲン、アルカリ金属を表し、Ｒ^３は、水素原子またはアシル基を示す。Ｒ^５としては、アシル基であることが好ましく、特にサリチロイル基、ベンゾイル基などの芳香族環を有するアシル基であることが好ましい。 The aminotriazole-based compound is represented by the general formula (2).

In the formula, R ⁴ and R ⁵ represent the same or different hydrogen atoms, alkyl groups, substituted alkyl groups, substituted aryl groups, carboxyl groups, acyl groups, alkyl ester groups, allyl ester groups, halogens, alkali metals, and R ³ represents Represents a hydrogen atom or an acyl group. R ⁵ is preferably an acyl group, and particularly preferably an acyl group having an aromatic ring such as a salicyloyl group or a benzoyl group.

  Specifically, 3-amino-1,2,4 triazole, 3-amino-1,2,4 triazole-carboxylic acid, 3-amino-5methyl-1,2,4 triazole, 3-amino-5 Heptyl-1,2,4 triazole, etc .; acid amide derivatives of aminotriazole compounds in which the hydrogen atom of the triazole group-bound amino group is substituted with an acyl group, such as 3- (N-salicyloyl) amino-1,2,4 Examples include triazole, 3- (N-salicyloyl) amino-5methyl-1,2,4 triazole, and 3- (N-acetyl) amino-1,2,4 triazole-5 carboxylic acid. Of these, acid amide derivatives of aminotriazole compounds are preferred. Examples of commercially available products include ADK STAB CDA-1 (trade name: manufactured by ADEKA Corporation; 3- (N-salicyloyl) amino-1,2,4-triazole).

  Examples of triazine compounds include 1,3,5-triazine, 2,4,6-trihydroxy-1,3,5-triazine, and 2,4,6-triamino-1,3,5-triazine. . Examples of commercially available products include ADK STAB ZS-27 (trade name: manufactured by ADEKA Corporation; main component: 2,4,6-triamino-1,3,5-triazine).

  As the component (C), a hydrazide compound is particularly preferable, and N, N′-bis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionyl] hydrazine is most preferable. . This is sold as Irganox MD-1024 by Ciba Specialty Chemicals.

  The blending amount of the metal harm preventing agent as component (C) is preferably 0.05 to 10 parts by mass, more preferably 100 parts by mass in total of (A) thermoplastic resin and (B) organopolysiloxane. Is 0.1-4 parts by mass, more preferably 0.2-2 parts by mass. If the blending amount of the component (C) is less than the lower limit of the above range, the effect of suppressing appearance defects after long-term outdoor exposure may not be sufficient, and if the blending amount of the component (C) exceeds the above range upper limit, the present invention. This is because the mechanical properties of the composition may deteriorate or the component (C) may bloom out on the surface. (C) One type of metal harm inhibitor may be used alone, or two or more types may be used in combination.

  The thermoplastic resin composition of the present invention comprises the components (A) to (C) as described above, but is preferably 0.1 to 5 parts by weight, preferably 100 parts by weight of the composition of the present invention. 0.1 to 2 parts by mass of a hindered phenol-based or hindered amine-based antioxidant may be blended. Moreover, 0.1-5 weight% with respect to 100 mass parts of this invention composition, Preferably 0.2-3 mass parts epoxy resin, such as a bisphenol A type, may be mix | blended with this invention composition. . Such epoxy resins are used when there is a need to prevent additives such as antioxidants from being adsorbed on the inorganic filler and reducing its effectiveness.

Furthermore, the composition of the present invention includes fillers such as calcium carbonate, calcium silicate, clay, kaolin, talc, silica, diatomaceous earth, mica powder, asbestos, alumina, as long as fluidity and mechanical strength are not impaired. Barium sulfate, aluminum sulfate, calcium sulfate, basic magnesium carbonate, molybdenum disulfide, graphite, carbon black, carbon fiber, silicone rubber powder, silicone resin powder, and the like can be blended. In addition, various additives that are known to be blended in the thermoplastic elastomer composition may be added to the composition of the present invention, as long as the object of the present invention is not impaired. Such additives include ultraviolet absorbers, light stabilizers, heat stabilizers, plasticizers, foaming agents, crystal nucleating agents, lubricants, antistatic agents, conductivity-imparting agents, colorants such as pigments and dyes, and compatibilizers. , Crosslinking agents, flame retardants, antifungal agents, low shrinkage agents, thickeners, release agents, antifogging agents, antiblooming agents, and silane coupling agents.
The composition of the present invention can be easily produced by uniformly mixing the components (A) to (C) as described above with heating and melting at a predetermined ratio. Moreover, with respect to 100 mass parts of (A) component, 10-150 mass parts (B) component and 0.1-50 mass parts (C) component are mixed under heat melting, and a masterbatch is prepared beforehand. Thereafter, the masterbatch in an amount such that the content of the component (B) and the component (C) in the final composition is in a desired ratio may be mixed with the component (A) under heating and melting. In addition, with respect to 100 parts by mass of component (A), 10 to 150 parts by mass of component (B) are mixed under heating and melting to prepare a master batch in advance, and thereafter (A) component and (C) component The masterbatch in such an amount that the content of the component (B) in the final composition is in a desired ratio may be mixed with heating under melting. There is no restriction | limiting in particular as a manufacturing apparatus used for preparation of this invention composition, A Banbury mixer, a kneader mixer, 2 rolls, a continuous kneading extruder are illustrated.

  When the component (A) is a polyolefin-based thermoplastic elastomer, 10 to 150 parts by mass of the component (B) and / or 100 parts by mass of a polyolefin-based resin such as polyethylene resin, polypropylene resin, polypropylene-ethylene copolymer, and EPR You may knead | mix 0.1-50 mass parts (C) component under heat melting, and you may make a masterbatch.

  A conventionally known method can be used as a method for obtaining the molded product by molding the composition of the present invention. Specifically, injection molding, extrusion molding, and compression molding are exemplified.

ΔL= L*(2) − L*(1)
Δa= a*(2) − a*(1)
Δb = b*(2) − b*(1)
式中a*(1)、b*(1)、L*(1)は、促進耐候性試験投入前の試験片の色の測定結果である。式中a*(2)、b*(2)、L*(2)は、促進耐候性試験後の試験片の色の測定結果である。 EXAMPLES The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to these examples. In the examples, the viscosity is a value at 25 ° C.
<Color measurement method>
Using a spectrophotometer (MINOLTA CM2002) manufactured by Minolta Co., Ltd., the color was measured by the L *, a *, b * color system. The L * axis defines brightness, the a * axis defines the red / green direction, and the b * axis defines the yellow / blue direction. The L * axis is 0 (black) to 100 (white), the a * axis is represented by red in the + direction, green in the − direction, the b * axis is represented by yellow in the + direction, and blue in the − direction. The color difference (ΔE) was determined by the following formula.

ΔL = L * (2) − L * (1)
Δa = a * (2) − a * (1)
Δb = b * (2) − b * (1)
In the formula, a * (1), b * (1), and L * (1) are the measurement results of the color of the test piece before the accelerated weathering test is input. In the formula, a * (2), b * (2), and L * (2) are measurement results of the color of the test piece after the accelerated weather resistance test.

[Examples 1 to 5]
A thermoplastic resin, an organopolysiloxane, and a metal harm prevention agent were mixed at 200 ° C. and 100 rpm using a lab plast mill at the blending ratio shown in Table 1. After mixing, the mixture was cooled to obtain a solid thermoplastic resin composition. This thermoplastic resin composition was again melted by a hot press at 200 ° C. to form a flat plate of 100 mm × 200 mm × 2 mm. This was irradiated with light using a xenon weathering tester (black panel temperature: 63 ° C., with rain), and an accelerated weathering test was conducted for 2000 hours. The color difference ΔE was calculated by measuring L *, a *, and b * before and after the test. The results are shown in Table 1.

[Comparative Example 1]
Thermoplastic resin and organopolysiloxane were mixed under heating at 200 ° C. and 100 rpm using a lab plastmill at the composition ratio shown in Table 1. After mixing, the mixture was cooled to obtain a solid thermoplastic resin composition. This thermoplastic resin composition was again melted by a hot press at 200 ° C. to form a flat plate of 100 mm × 200 mm × 2 mm. This was irradiated with light using a xenon weathering tester (black panel temperature: 63 ° C., with rain), and an accelerated weathering test was conducted for 2000 hours. The color difference ΔE was calculated by measuring L *, a *, and b * before and after the test. The results are shown in Table 1.

[Example 6]
ADFLEX (registered trademark) KS359P (manufactured by BASELL) 50 parts by mass, BY16-140 (manufactured by Toray Dow Corning) 50 parts by mass, Irganox MD-1024 (manufactured by Ciba Specialty Chemicals) 5 parts by mass The part was mixed under heating at 200 ° C. and 100 rpm using a lab plast mill. After mixing, the mixture was cooled to obtain a solid master batch.

  95 parts by mass of Santoprene 121-62M 100 (manufactured by AES Japan Co., Ltd.) and 10.5 parts by mass of the master batch were mixed under heating at 200 ° C. and 100 rpm using a lab plast mill. After mixing, the mixture was cooled to obtain a solid thermoplastic resin composition. This thermoplastic resin composition was again melted by a hot press at 200 ° C. to form a flat plate of 100 mm × 200 mm × 2 mm. This was irradiated with light using a xenon weathering tester (black panel temperature: 63 ° C., with rain), and an accelerated weathering test was conducted for 2000 hours. The color difference ΔE was calculated by measuring L *, a *, and b * before and after the test. The results are shown in Table 1.

※ １：オレフィン系熱可塑性エラストマー
商品名：サントプレーン １２１−６２Ｍ １００ （ＡＥＳジャパン（株）製）
※ ２：商品名：ＢＹ１６−１４０
分子鎖両末端ジメチルヒドロキシシリル基封鎖ポリジメチルシロキサン；動粘度１６００万ｍｍ^２／ｓｅｃ以上、ゲルパーミエーションクロマトグラフィー（ＧＰＣ）によるポリスチレン換算の数平均分子量３５万（東レ・ダウコーニング（株）製）
※ ３：商品名：イルガノックス ＭＤ−１０２４
Ｎ，Ｎ’−ビス[ ３−（３，５−ジ−ｔ−ブチル−４−ヒドロキシフェニル）プロピオニル]ヒドラジン（チバ・スペシャルティ・ケミカルズ（株）製）
※ ４：商品名：アデカスタブ ＣＤＡ−１
３−（Ｎ−サリチロイル）アミノ−１，２，４−トリアゾール（（株）ＡＤＥＫＡ製）
※ ５：商品名：アデカスタブ ＣＤＡ−６
ドデカンジオイル−ジ−（Ｎ’−サリチロイル）ヒドラジン（（株）ＡＤＥＫＡ製）
※ ６：商品名：アデカスタブ ＺＳ−２７
２，４，６−トリアミノ−１，３，５−トリアジンを主成分とする混合物（（株）ＡＤＥＫＡ製）
※ ７：ＡＤＦＬＥＸ（登録商標） ＫＳ３５９Ｐ（ＢＡＳＥＬＬ社製） ５０質量部、ＢＹ１６−１４０（東レ・ダウコーニング（株）製） ５０質量部、イルガノックス ＭＤ−１０２４（チバ・スペシャルティ・ケミカルズ(株)製） ５質量部からなる混合物

* 1: Olefin-based thermoplastic elastomer Product name: Santoprene 121-62M 100 (AES Japan Co., Ltd.)
* 2: Product name: BY16-140
Polydimethylsiloxane blocked with dimethylhydroxysilyl groups at both ends of the molecular chain; kinematic viscosity 16 million mm ² / sec or more, number average molecular weight 350,000 in terms of polystyrene by gel permeation chromatography (GPC) (manufactured by Toray Dow Corning Co., Ltd.)
* 3: Product name: Irganox MD-1024
N, N′-bis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionyl] hydrazine (Ciba Specialty Chemicals)
* 4: Product name: ADK STAB CDA-1
3- (N-salicyloyl) amino-1,2,4-triazole (manufactured by ADEKA Corporation)
* 5: Product name: ADK STAB CDA-6
Dodecanedioyl-di- (N'-salicyloyl) hydrazine (manufactured by ADEKA)
* 6: Product name: ADK STAB ZS-27
Mixture based on 2,4,6-triamino-1,3,5-triazine (manufactured by ADEKA)
* 7: ADFLEX (registered trademark) KS359P (manufactured by BASELL) 50 parts by mass, BY16-140 (manufactured by Toray Dow Corning) 50 parts by mass, Irganox MD-1024 (manufactured by Ciba Specialty Chemicals) ) Mixture consisting of 5 parts by weight

  The composition of the present invention as described above is excellent in moldability and, after molding, becomes a molded product excellent in surface lubricity, scratch resistance, and weather resistance. Therefore, for example, a door trim material is required. Suitable for automotive interior parts and exterior parts such as console panels, instrumental panels and weatherstrips, exterior materials for glass sashes such as window frames, architectural parts such as gaskets and packings, and exterior parts for household appliances The

Claims (4)

(A) polyolefin-based thermoplastic elastomer , (B) organopolysiloxane (0.1 to 50 parts by mass with respect to 100 parts by mass of component (A)) , (C) metal harm inhibitor ( component (A) and ( B) A thermoplastic resin composition comprising 0.05 to 10 parts by mass with respect to 100 parts by mass of the total amount of components . Component (B), the average unit ^formula: _R 1 _{a SiO} in _{(4-a) / 2} {wherein, ^{R 1} is a monovalent hydrocarbon group having 1 to 10 carbon atoms, a is from 1.95 to 2 .05 number. } The thermoplastic resin composition according to claim 1, wherein the composition is an organopolysiloxane having a kinematic viscosity at 25 ° C. of 100,000 mm ² / sec or more. 2. The thermoplastic resin composition according to claim 1, wherein the component (C) is at least one metal damage inhibitor selected from the group consisting of hydrazide compounds, aminotriazole compounds, and amino group-containing triazine compounds. . The molded object formed by shape | molding the thermoplastic resin composition of any one of Claims 1-3.