Thermoplastic elastomer composition and pneumatic tire using the same

A thermoplastic elastomer and composition technology, applied in the field of thermoplastic elastomer composition and pneumatic tires, can solve the problems of reducing tire weight, fuel economy obstacles, etc., and achieve the effect of excellent gas barrier properties

Inactive Publication Date: 2010-02-10
YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This hinders the reduction of tire weight to improve the fuel economy of the car

Method used

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  • Thermoplastic elastomer composition and pneumatic tire using the same
  • Thermoplastic elastomer composition and pneumatic tire using the same
  • Thermoplastic elastomer composition and pneumatic tire using the same

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Embodiment

[0046] (1) Main components

[0047] The following three types are used as polyamide resins.

[0048] Polyamide resin 1: layered silicate-modified aliphatic polyamide resin prepared by interlayer polymerization (Nylon 6 "UBE Nylon" 1022C2 produced by Ube Industries, Ltd.; layered silicate: sodium montmorillonite stone; phyllosilicate content: 2% by weight; melt viscosity η: 387Pa·S)

[0049] Polyamide resin 2: high-viscosity nylon 6 (nylon 6 "UBE nylon" 1022B produced by Ube Industries, Ltd.; melt viscosity η: 254Pa·S)

[0050] Polyamide resin 3: low-viscosity nylon 6 (nylon 6 "UBE nylon" 1013B produced by Ube Industries, Ltd.; melt viscosity η: 113 Pa·S)

[0051] The following four types are used as hydrophobic plasticizers.

[0052] Hydrophobic plasticizer 1: n-butylbenzenesulfonamide (BM-4 produced by Daihachi Chemical Industry Co., Ltd.; SP value: 10.5 (cal / cm 2 ) 1 / 2 )

[0053] Hydrophobic plasticizer 2: tricresyl phosphate (TCP produced by Daihachi Chemical Industry...

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Abstract

The invention aims to improve the balance of the low temperature durability, gas barrier property, and melt processability of a thermoplastic elastomer composition comprising an aliphatic polyamide resin in which an ethylene-based modifying polymer is dispersed, a thermoplastic elastomer composition comprising a thermoplastic resin composition (A) and a modified ethylene-based modifying polymer (B) graft modified with acid anhydride groups, wherein the thermoplastic resin composition (A) comprises 60 to 90 percent by weight of a layered silicate modified aliphatic polyamide resin (A1) prepared by an interlayer polymerization method and 10 to 40 percent by weight of a hydrophobic plasticizer (A2) having a solubility parameter (SP value) of 10 to 12 (cal/cm<2>)<1/2>, the modified ethylene-based modifying polymer (B) is 70 of 120 parts by weight based on 100 parts by weight of the thermoplastic elastomer composition, and the modified ethylene-based modifying polymer (B) forms a dispersedparticle phase.

Description

technical field [0001] The present invention relates to a thermoplastic elastomer composition and a pneumatic tire using the same, and more particularly to a thermoplastic elastomer composition comprising an aliphatic polyamide resin in which an ethylene-based modified polymer is dispersed and its use The composition of pneumatic tires. Background technique [0002] Conventionally, a rubber composition having butyl rubber, halogenated butyl rubber, etc. as a main component has been used for an innerliner arranged as an air barrier layer on the inner surface of a tire to maintain the inner pressure of the tire. However, a rubber composition mainly composed of butyl-based rubber has low air barrier properties, so when the rubber composition is used for an inner liner, the thickness of the inner liner must be about 1 to 4 mm. The weight of the inner liner in the tire is about 5%. This creates an obstacle in reducing the weight of tires to improve the fuel economy of automobil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08L51/06C08K3/34C08K5/435C08K5/10B60C1/00
CPCC08K3/346C08L51/06C08K5/0016C08L79/02C08K5/435C08L77/00B60C1/0008C08K2201/008C08L2666/20C08L2666/24
Inventor 师冈直之
Owner YOKOHAMA RUBBER CO LTD
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