WO2021029589A1 - Composition de copolymère thermoplastique et produit moulé fabriqué à partir de celle-ci - Google Patents

Composition de copolymère thermoplastique et produit moulé fabriqué à partir de celle-ci Download PDF

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WO2021029589A1
WO2021029589A1 PCT/KR2020/010230 KR2020010230W WO2021029589A1 WO 2021029589 A1 WO2021029589 A1 WO 2021029589A1 KR 2020010230 W KR2020010230 W KR 2020010230W WO 2021029589 A1 WO2021029589 A1 WO 2021029589A1
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weight
thermoplastic copolymer
copolymer composition
parts
polyester elastomer
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PCT/KR2020/010230
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English (en)
Korean (ko)
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최성문
안형민
김규영
서무송
김정우
곽민한
김대철
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(주) 엘지화학
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Priority claimed from KR1020200095350A external-priority patent/KR102432562B1/ko
Application filed by (주) 엘지화학 filed Critical (주) 엘지화학
Priority to EP20848832.0A priority Critical patent/EP3822318B1/fr
Priority to CN202080004629.7A priority patent/CN112689659B/zh
Priority to US17/267,706 priority patent/US20210189116A1/en
Priority to JP2021508302A priority patent/JP7104236B2/ja
Publication of WO2021029589A1 publication Critical patent/WO2021029589A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
    • C08L71/02—Polyalkylene oxides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes

Definitions

  • the present invention relates to a thermoplastic copolymer composition, and more particularly, to a thermoplastic copolymer composition that can provide a noise reduction effect used in the production of a molded article such as a constant velocity joint boot.
  • the constant velocity joint of an automobile is a component installed between the transmission and the tire, and is a device that uniformly transmits power generated from the engine to the tire through the transmission so that both tires rotate at a uniform speed.
  • Excessive grease is applied to such a constant velocity joint for lubrication, and a rubber boot is wrapped to prevent the lubricating grease from escaping.
  • the boot used in the constant velocity joint serves to protect the constant velocity joint and grease from external foreign matter.
  • the boot is generally manufactured by extrusion molding a rubber or polyester resin.
  • the constant velocity joint transmits power to the tire, it rotates and noise may be generated due to friction between the surface and the surface in the corrugation in the boot.
  • the noise is increased due to friction between the surface and the surface at the wrinkles in the boot, resulting in a loud noise of 90dB or more.
  • various lubricants are added when manufacturing the boot.
  • amide, montane, and olefin-based monomeric waxes are used, but these components have poor compatibility with the polyester elastomer, which is the main component of the boot, and thus have the effect of adding a small amount. Insufficient and excessive addition causes surface defects and mechanical properties to decrease due to migration.
  • Patent Literature (Patent Literature 0001) JP 1997-177971 A
  • the problem to be solved in the present invention is to improve the uniformity of the surface characteristics of the constant velocity joint boot without deteriorating mechanical properties, thereby reducing the noise of the constant velocity joint boot in order to solve the problems mentioned in the technology behind the invention. It is to effectively improve the characteristics and sound insulation characteristics.
  • the present invention was conceived to solve the problems of the prior art, and it is an object of the present invention to provide a thermoplastic copolymer composition capable of improving low noise characteristics without deterioration of mechanical properties by being used for manufacturing molded articles such as constant velocity joint boot. To do.
  • the present invention is a polyester elastomer; Polytetramethylene glycol; And silica (SiO2) and an additive containing a siloxane-based polymer represented by Formula 1; wherein, the polytetramethylene glycol is included in an amount of 3 to 8 parts by weight based on 100 parts by weight of the polyester elastomer, and the additive is the It provides a thermoplastic copolymer composition comprising 1 to 4 parts by weight based on 100 parts by weight of polyester elastomer:
  • R 1 to R 8 are independently an alkyl group having 1 to 10 carbon atoms, and n is an integer of 100 to 10,000.
  • the present invention provides a molded article made from the thermoplastic copolymer composition.
  • thermoplastic copolymer composition according to the present invention contains a polyester elastomer and polytetramethylene glycol having good compatibility with the elastomer as a main component, the soft property of the molded article made of the composition according to the present invention is reinforced to prevent mechanical friction. There is an effect of reducing the noise generation. Furthermore, by including an additive including silica (SiO 2 ) and a siloxane-based polymer that accelerates the elution of the polytetramethylene glycol, it is possible to effectively improve noise generation due to friction or contamination of a molded article such as a constant velocity joint boot. .
  • FIG. 2 shows a state in which a hollow molded product is mounted at a bending angle of 40° in a noise meter for measuring the number of noise generation cycles of 75 dB or more.
  • thermoplastic copolymer composition according to an embodiment of the present invention comprises a polyester elastomer (a); Polytetramethylene glycol (b); And an additive (c) including silica (SiO 2 ) and a siloxane-based polymer.
  • the polyester elastomer (a) has both the advantages of a thermoplastic resin, which is easy to mold and process, and the advantages of rubber such as flexibility and elasticity, and is used as a material for automobile parts, such as a constant velocity joint boot. It is an ingredient that can be used. In this field, it may be commonly used as a thermoplastic polyester elastomer (TPEE).
  • TPEE thermoplastic polyester elastomer
  • polyester elastomer can be obtained by a polycondensation reaction of polyester and polyether.
  • the polyester is a unit constituting the hard segment of the elastomer, and may be derived from an aromatic dicarboxylic acid and an aliphatic diol.
  • Examples of the polyester may include polyethylene terephthalate (PET), poly(1,3-propylene terephthalate) (PTT), polybutylene terephthalate (PBT), or a combination thereof or a copolymer thereof.
  • the polyether is a unit constituting the soft segment of the elastomer, and examples thereof include polyethylene ether glycol (PEG), polypropylene ether glycol (PPG), polytetramethylene glycol (PTMG), and polytetramethylene ether glycol (PTMEG). Or a combination thereof or a copolymer thereof may be included.
  • PEG polyethylene ether glycol
  • PPG polypropylene ether glycol
  • PTMG polytetramethylene glycol
  • PTMEG polytetramethylene ether glycol
  • the polyester elastomer is a main component of the thermoplastic copolymer composition of the present invention, and 80 to 99% by weight of the total weight of the polyester elastomer (a), polytetramethylene glycol (b) and additive (c), such as 90 to 98% by weight It can occupy %.
  • the polyester elastomer may preferably be contained in an amount of 80 to 95% by weight, preferably 85 to 95% by weight, more preferably 85 to 90% by weight, based on the total weight of the thermoplastic copolymer composition, and this range It has the advantage of excellent physical property balance and excellent hardness.
  • the total weight of the thermoplastic copolymer composition means the sum of the weights of all components included in the thermoplastic copolymer composition.
  • the thermoplastic copolymer composition of the present invention may include polytetramethyleneglycol (PTMG) (b).
  • PTMG polytetramethyleneglycol
  • Polytetramethylene glycol is a component that minimizes noise due to mechanical friction of the molded product by imparting soft properties to a molded product made of a composition containing a polyester elastomer.
  • the polytetramethylene glycol has good compatibility with the polyester elastomer, it can be uniformly dispersed in the polyester elastomer resin, and the polytetramethylene glycol uniformly dispersed in the polyester elastomer resin is molded over time It can slowly elute to the surface of (resin).
  • the constant velocity joint boot is mounted on the drive shaft of the vehicle to protect the constant velocity joint from external environment and internal grease exposure while rotating.
  • the conventional constant velocity joint boot is damaged by continuous surface friction caused by rotational motion and thus the surface is damaged. This was frequent.
  • the eluted polytetramethylene glycol can reduce the surface friction of the polyester elastomer molded article to prevent damage to the constant velocity joint boot and reduce noise generation.
  • the polytetramethylene glycol may be included in an amount of 3 to 8 parts by weight, specifically 3 to 5 parts by weight, based on 100 parts by weight of the polyester elastomer. That is, the content of polytetramethylene glycol should be 3 parts by weight or more in order to reduce the surface friction with respect to a molded article made of a thermoplastic copolymer composition and to exhibit noise reduction properties (sound-sounding properties) when the molded article is applied to a constant velocity joint boot. There is a need. On the other hand, the content of the polytetramethylene glycol may be 8 parts by weight or less in order to prevent the decrease in the mechanical properties of the molded article and the product moldability due to excessive elution.
  • the weight average molecular weight (Mw) of the polytetramethylene glycol may be in the range of 2000 to 5000 g/mol, specifically 2500 to 3500 g/mol, and the weight average molecular weight in this range When it has, it is advantageous in terms of controlling the surface elution rate. Specifically, if the molecular weight is more than 2000 g/mol, mold contamination and work defects can be prevented during product molding due to excessively high dissolution rate. If the molecular weight is less than 5000 g/mol, the dissolution rate of polytetramethylene glycol is It can prevent excessive slowdown. If the elution rate is excessively slow, polytetramethylene glycol cannot be sufficiently eluted onto the surface of the molded article, making it difficult to achieve the purpose of reducing surface friction.
  • the weight average molecular weight can be measured using GPC (Gel Permeation Chromatography, waters breeze) unless otherwise defined, and as a specific example, a chloroform:chlorophenol mixed solution (volume ratio 10:1) ) Using GPC (Gel Permeation Chromatography, water breeze) as a relative value to a standard polystyrene (PS) sample.
  • GPC Gel Permeation Chromatography, waters breeze
  • PS polystyrene
  • the additive (c) containing the silica (SiO 2 ) and the siloxane-based polymer accelerates the elution of the polytetramethylene glycol to improve the ductility of the molded article, so that the molded article is For example, it is a component that maximizes the characteristics of noise reduction required when used in a constant velocity joint boot.
  • the siloxane-based polymer may be polydimethylsiloxane (PDMS) having a structure represented by Formula 1 below.
  • PDMS polydimethylsiloxane
  • R 1 to R 8 are independently an alkyl group having 1 to 10 carbon atoms, and n is an integer of 100 to 10,000.
  • R 1 to R 8 are preferably independently an alkyl group having 1 to 5 carbon atoms, more preferably independently an alkyl group having 1 to 3, and in this case, there is an advantage of excellent noise reduction characteristics.
  • n is preferably an integer of 500 to 10,000, more preferably an integer of 1,000 to 10,000, even more preferably an integer of 5,000 to 10,000, even more preferably an integer of 5,000 to 7,500, within this range.
  • polytetramethylene glycol can be evenly eluted with respect to the manufactured molded article, and further, the elution rate of polytetramethylene glycol in the molded article is accelerated. That is, in order to accelerate the elution of polytetramethylene glycol, for example, there is a method of lowering the molecular weight of the added polytetramethylene glycol, but in this case, as described above, there is a problem of workability such as mold contamination and poor work during product molding. Not only occurs, it becomes difficult to elute even polytetramethylene glycol in the molded article.
  • the siloxane-based polymer having good compatibility with a polyester elastomer to the composition, it is possible to dissolve polytetramethylene glycol evenly and quickly in the manufactured molded article.
  • the additive (c) may further include silica (SiO 2 ).
  • the silica may be, for example, fumed silica. Since the siloxane-based polymer contained in the additive (c) is a liquid polymer at room temperature, it is preferable to add the siloxane-based polymer to the composition in the form of pellets with the silica from the viewpoint of storage, transportation, and ease of introduction into the composition. Do. In this case, it is evenly dispersed in the polyester elastomer composition. Further, the fumed silica may include a high molecular weight chain structure, through which entanglement between several polymers in the composition may be induced, thereby improving the mechanical properties of the composition or the molded article manufactured therefrom.
  • the additive (c) including silica and siloxane polymer capable of the above-described action may be included in an amount of 1 to 4 parts by weight, specifically 1.5 to 3.0 parts by weight, based on 100 parts by weight of the polyester elastomer.
  • the content may be 1 part by weight or more, and in particular, it may be 4 parts by weight or less in order to prevent hardness reduction and peeling.
  • the content of the silica and the siloxane polymer contained in the additive (c) is 1 to 4 parts by weight of the siloxane polymer relative to 1 part by weight of silica, specifically 1.5 to 3.0 parts by weight.
  • the siloxane-based polymer is silica 1 It may be used in less than 4 parts by weight compared to parts by weight.
  • thermoplastic copolymer composition of the present invention may further include polyalkylene terephthalate, such as polybutylene terephthalate (PBT), when there is a need to improve mechanical properties such as special hardness reinforcement in the molded article.
  • PBT polybutylene terephthalate
  • durability is improved due to prevention of decrease in hardness, and this minimizes mechanical damage to the molded article surface, so that the molded article is indirectly connected to a constant velocity joint boot.
  • noise reduction characteristics can be improved.
  • the content of the polyalkylene terephthalate may be 3 to 8 parts by weight, specifically 3 to 5 parts by weight, based on 100 parts by weight of the polyester elastomer.
  • the effect of reinforcing hardness may be insignificant, and when it is used in an amount exceeding 8 parts by weight, the hardness is excessively high and the elasticity of the molded article And may have an adverse effect on the noise reduction characteristics (sound-freezing characteristics).
  • thermoplastic copolymer composition of the present invention may further include various other additives such as a compatibilizer, an ionomer, a heat stabilizer, a light stabilizer, a lubricant, and a carbon black pigment, if necessary.
  • the compatibilizer is a chain extender and functions to control the viscosity of the polymer composition.
  • the compatibilizer may include, for example, a glycidyl group-modified ethylene-octene-based copolymer (EOR-GMA), and the glycidyl group-modified ethylene-octene-based copolymer is grafted with glycidyl methacrylate. It may be a modified ethylene-octene-based copolymer (graft content of glycidyl methacrylate is 8 to 20% by weight).
  • the ionomer performs functions such as increasing the melt tension (reinforcing the moldability of the product), increasing chemical resistance, and reinforcing abrasion resistance, and a sodium-based ionomer, such as Surlyn 8920 manufactured by Dupont, may be used.
  • the heat stabilizer serves to inhibit or block thermal decomposition of the composition when the thermoplastic copolymer composition is mixed or molded at high temperature.
  • the heat stabilizer is not particularly limited, and for example, an amine type, a phenol type, or a phosphite type may be used.
  • an ultraviolet absorber or a Hindered Amine Light Stabilizer (HALS) that protects against decomposition by exposure to ultraviolet light may be used.
  • HALS Hindered Amine Light Stabilizer
  • the ultraviolet absorber hydroxy benzophenone or benzotriazoles may be used, but is not limited thereto.
  • the amine light stabilizer is bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate and methyl 1,2,2,6,6-pentamethyl-4-piperidyl Mixtures of sebacates may be used, but are not limited thereto.
  • amide As the lubricant, amide, montan, or olefin-based monomeric wax may be used.
  • thermoplastic copolymer composition of the present invention may be used in an amount that does not impair the intrinsic properties of the thermoplastic copolymer composition of the present invention, for example, in an amount of 0.1 to 5% by weight, or 0.1 to 3% by weight based on the total amount of the composition. Can be used.
  • thermoplastic copolymer composition of the present invention may be prepared by heating and melting mixing the above-described components into pellets, and the melt mixing temperature may be appropriately selected in consideration of the melting point of the polyester elastomer.
  • melt mixing may be performed at 200°C to 300°C, specifically 200°C to 270°C.
  • the thermoplastic copolymer has a flow index (Melt Index, g/10 min) measured according to ISO1133 (230° C., 10 kg condition), preferably 18 g/10 min or less, more preferably 17 g/10 min or less, further It is preferably 16 g/10min or less, and a specific example is 5 to 18 g/10min, a preferred example is 10 to 18 g/10min, a more preferred example is 12 to 18 g/10min, and a more preferred example is 14 to 17 g/ 10 min, a more preferable example is 15 to 16 g/10 min, and there is an advantage of excellent injection molding within this range.
  • g/10 min flow index measured according to ISO1133 (230° C., 10 kg condition
  • thermoplastic copolymer has a hardness (Shore D) measured according to ISO868 preferably 33 or more, specific examples 33 to 40, preferred examples 33 to 38, more preferred examples 33 to 37, and within this range In addition, there is an advantage of excellent hardness properties and excellent balance of properties.
  • the thermoplastic copolymer has a tensile strength (MPa) measured according to ISO527, preferably 15 MPa or more, a specific example is 15 to 25 MPa, a preferred example is 15 to 20 MPa, and a more preferred example is 15 to 16 MPa. , In this range, there is an advantage of excellent strength and excellent balance of properties.
  • the thermoplastic copolymer has a tensile elongation (%) measured according to ISO527 is preferably 260% or more, more preferably 270% or more, even more preferably 277% or more, and a specific example is 260 to 290%, preferably An example is 270 to 290%, a more preferable example is 275 to 285%, a more preferable example is 275 to 280%, and there is an advantage of excellent mechanical properties and excellent balance of properties within this range.
  • the thermoplastic copolymer has a number of noise generation cycles of 75dB or more measured under the condition of a bending angle of 40° of the sample by a sound level meter, preferably 34 or more, more preferably 38 or more, more preferably 41 or more, most preferably 42 or more. And, a specific example is 34 to 45, and within this range, there is an advantage of excellent noise reduction effect and excellent physical property balance.
  • the thermoplastic copolymer preferably has a friction coefficient of 0.05 or less, more preferably 0.045 or less, and even more preferably 0.042 while moving a ball tip with a weight of 10 kg on a square specimen of 100 x 100 x 2 (mm) by 30 mm.
  • it is even more preferably 0.040 or less, and there is an advantage that the noise reduction effect is excellent within this range.
  • thermoplastic copolymer preferably has a glossiness of 5 or less, more preferably 3 or less, more preferably 1 or less, and noise reduction properties within this range, as measured under the condition of a reflection angle of 60° after being left for a week at room temperature after injection. There is this outstanding advantage.
  • thermoplastic copolymer preferably has a reduction rate of glossiness measured after injection at a gloss immediately after injection measured under a reflection angle of 60° and left at room temperature for a week after injection at least 70%, more preferably at least 80%, and more preferably Is more than 90%, and there is an advantage of excellent noise reduction characteristics within this range.
  • thermoplastic copolymer composition of the present invention as described above can be used to manufacture a molded article such as a constant velocity joint boot by extrusion molding, and the molded article maintains mechanical properties and improves soft properties, thereby reducing friction and contamination during rotation. Noise generation can be improved.
  • the present invention further provides a molded article prepared from the thermoplastic copolymer composition.
  • the number of cycles for generating noise of 75dB or more for the molded article was measured by the following method.
  • the noise meter After installing the noise meter at a bending angle of 40°, it was rotated at 150 rpm. The mounting state is shown in FIG. 2. The surrounding environment in which the measurement was made was kept at room temperature and noise generation conditions of 75dB or less.
  • One repetition of the above process is one cycle, and one cycle is a total of 100 seconds.
  • It may include a constant velocity joint boot for a vehicle having preferably 40 to 80 noise generation cycles measured by the above method.
  • thermoplastic copolymer resin composition The components of the composition shown in Table 1 below were melted and mixed at 230° C. using a twin-screw extrude to pelletize to prepare a thermoplastic copolymer resin composition.
  • composition components used in each Example and Comparative Example are as follows.
  • the polyester elastomer was prepared by a polycondensation reaction of polybutylene terephthalate and polytetramethylene glycol, and a flow index of 20 g/10min (230°C, 2.13kg) was used.
  • Polytetramethylene glycol (PTMG) was manufactured by BASF (K-PTG) and had a weight average molecular weight of 3,000 g/mol.
  • additive (c) is a polydimethylsiloxane (PDMS) having a structure of Formula 1, a siloxane-based polymer having an n of 6000, and a fumed silica manufactured by Wacker (Genioplast PelletS), compared to 1 part by weight of the fumed silica.
  • the acid-based polymer was mixed in a pellet form in an amount of 2.34 parts by weight and compounded.
  • Shenyang Ketong Plastic's KT-20 was used as a compatibilizer, and DuPont's brand name Surlyn 8920 was used as an ionomer. Meanwhile, a mixture of 0.5% by weight of the brand name Naugard445 and 0.5% by weight of the brand name Songnox1010 was used as a heat stabilizer, 0.2% by weight of the brand name Chimassorb 944 was used as a light stabilizer, and a mixture of 0.3% by weight of the brand name OP WAX and 0.3% by weight of the brand name LC104N was used as a lubricant. Used. Carbon black EC300J was used as a carbon black pigment.
  • the prepared composition was vacuum-dried at 85° C. for 4.5 hours, and then injection-molded at a temperature of 230° C. to prepare a 100 mm ⁇ 100 mm ⁇ 2T square disk specimen for measuring tensile strength, tensile elongation, and hardness.
  • a hollow molded product was manufactured to measure the number of cycles of noise generation over 75dB.
  • Hardness (Shore D): The hardness of the specimen was measured in Shore D type according to standard measurement ISO868.
  • Number of noise generation cycles The number of noise generation cycles of 75dB or more for the molded product was measured.
  • Comparative Example 6 when a small amount of an additive including a siloxane-based polymer and silica is added in a small amount of 0.5 parts by weight, it can be seen that the noise reduction effect of the molded article is not properly exhibited compared to Example 2, and as in Comparative Example 7 When an additive containing a polymer and silica is added in an excessive amount, the noise reduction characteristics of the molded article are exhibited, but the hardness characteristics are deteriorated. In particular, the flow index was found to flow down during molding because the flow index was too high.
  • FIG. 1 shows the surface conditions of the specimens prepared from Examples 1 to 2 and Comparative Examples 2 to 3 in which PTMG was used in the same amount in the thermoplastic copolymer composition and left for one week.
  • Example 1 in which an additive including silica and a siloxane-based polymer was added, and Example 2 in which PBT was additionally reinforced, had no gloss on the surface of the specimen.
  • Friction coefficient 100 x 100 x 2 (mm) A ball tip with a weight of 10 kg on a square specimen was measured while moving 30 mm.
  • Glossiness Glossmeter TC-108DPA of Tokyo Denshoku Co., Ltd was measured under the condition of a reflection angle of 60°.
  • thermoplastic copolymer composition containing the additive according to the present invention has a significantly lower coefficient of friction compared to Comparative Example 3 that does not contain the additive, and has excellent frictional noise resistance.
  • thermoplastic copolymer composition containing the additive according to the present invention did not have a significant difference in gloss immediately after injection compared to Comparative Example 3 without the additive, but at room temperature for a week after injection.
  • the glossiness of Example 2 was significantly lowered after being left to stand, whereas the glossiness of Comparative Example 3 was not significantly lowered.
  • the additive (c) used in Example 2 lost the surface gloss of PTMG. It can be seen that this is the result of accelerating the dissolution, and it can be seen that the dissolution of the PTMG from the constant velocity joint boot to the surface leads to noise reduction.

Abstract

La présente invention concerne une composition de copolymère thermoplastique utilisée dans la fabrication d'un produit moulé, comme un soufflet de joint homocinétique d'un véhicule, et peut ainsi améliorer les caractéristiques de faible bruit sans détérioration des propriétés mécaniques, la composition comprenant : un élastomère de polyester ; un additif comprenant de la silice et un polymère à base de siloxane représenté par la formule chimique 1 ; et un polytétraméthylène glycol, l'additif étant inclus en une quantité de 1 à 4 parties en poids sur la base de 100 parties en poids de l'élastomère de polyester, et le polytétraméthylène glycol étant inclus en une quantité de 3 à 10 parties en poids sur la base de 100 parties en poids de l'élastomère de polyester. [Dessin représentatif] figure 1
PCT/KR2020/010230 2019-08-14 2020-08-03 Composition de copolymère thermoplastique et produit moulé fabriqué à partir de celle-ci WO2021029589A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP20848832.0A EP3822318B1 (fr) 2019-08-14 2020-08-03 Composition de copolymère thermoplastique et produit moulé fabriqué à partir de celle-ci
CN202080004629.7A CN112689659B (zh) 2019-08-14 2020-08-03 热塑性共聚物组合物和使用其制造的模制品
US17/267,706 US20210189116A1 (en) 2019-08-14 2020-08-03 Thermoplastic copolymer composition and molded article manufactured using the same
JP2021508302A JP7104236B2 (ja) 2019-08-14 2020-08-03 熱可塑性共重合体組成物及びそれから製造される成形品

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KR10-2019-0099672 2019-08-14
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KR1020200095350A KR102432562B1 (ko) 2019-08-14 2020-07-30 열가소성 공중합체 조성물 및 이로부터 제조되는 성형품
KR10-2020-0095350 2020-07-30

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JPH09177971A (ja) 1995-12-27 1997-07-11 Toyoda Gosei Co Ltd 樹脂製自在軸継手用ブーツ
US5902854A (en) * 1996-09-27 1999-05-11 The Dow Chemical Company Polydimethylsiloxane containing polymer blends
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KR20040041532A (ko) * 2001-10-12 2004-05-17 신에츠 포리마 가부시키가이샤 기판수납 용기용 개스킷 부재 및 이것을 사용한 기판수납용기
US20060142422A1 (en) * 2004-12-07 2006-06-29 Toshikazu Kobayashi Hydrolysis resistant polyester compositions and articles made therefrom

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