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Rubber composition for tire tread and pneumatic tire using the same

A technology of rubber composition and tire tread, which is applied in the direction of pneumatic tires, special tires, tire parts, etc., and can solve problems such as unsatisfactory processing performance and wear resistance

Inactive Publication Date: 2005-09-21
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, epoxidized natural rubber is not used as a rubber component in this method, and processability and abrasion resistance are not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0083] According to the first embodiment of the present invention, by adding epoxidized natural rubber, silicon dioxide, silane coupling agent and anionic surfactant, a rubber composition for tire tread is prepared, and its rolling resistance performance and wet skid resistance Improved processability and wear resistance are not compromised.

[0084] Moreover, according to the second embodiment of the present invention, by adding epoxidized natural rubber, silicon dioxide, silane coupling agent and stearic acid metal salt, a rubber composition for tire tread is prepared, the wear resistance and Heat resistance is improved without loss of rolling resistance performance and wet skid resistance.

[0085] Furthermore, according to the present invention, a tire tread is prepared by adding a mixture of an anionic surfactant and a metal stearate, which is mixed with epoxidized natural rubber, silica and a silane coupling agent With the rubber composition, processability, abrasion re...

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Abstract

The present invention provides a rubber composition for a tire tread, in which processability, abrasion resistance, rolling resistance properties and wet grip performance are improved in a balanced manner. Specifically, the present invention provides a rubber composition for a tire tread comprising 5 to 150 parts by weight of silica having nitrogen-adsorbing specific surface area of 100 to 300 m2 / g based on 100 parts of a rubber component containing 5 to 100% by weight of an epoxidized natural rubber, and 1 to 20 parts by weight of a silane coupling agent and 0.1 to 20 parts by weight of an anionic surfactant based on 100 parts by weight of the silica; and a rubber composition for a tire tread comprising 5 to 150 parts by weight of silica having nitrogen-adsorbing specific surface area of 100 to 300 m2 / g and 1 to 10 parts by weight of a metal salt of stearic acid, based on 100 parts of a rubber component containing 5 to 100% by weight of an epoxidized natural rubber, and 1 to 20 parts by weight of a silane coupling agent based on 100 parts by weight of the silica.

Description

technical field [0001] The present invention relates to a rubber composition for tire treads and a pneumatic tire using the rubber composition. Background technique [0002] In recent years, concern has increased over rising oil prices due to oil supply and depletion issues. Also, natural resources are being re-recognized in terms of environmental issues such as resource conservation and strict compliance with regulations to prevent carbon dioxide emissions. The tire industry is no exception, and natural rubber is attracting attention as an alternative to synthetic rubber. Natural rubber has high mechanical strength and excellent wear resistance, so it is often used in large tires such as truck / bus tires. However, since natural rubber has only low-molecular-weight methyl groups on side chains and has a low glass transition temperature (Tg) of -60°C, there is a problem of poor slip resistance. Also, since natural rubber is a natural resource, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C1/00C08K3/36C08K5/09C08K5/098C08K5/103
CPCC08K5/098C08C19/06B60C1/0016C08K3/36C08K5/103Y02T10/86C08L15/00
Inventor 八木则子村冈清繁
Owner SUMITOMO RUBBER IND LTD
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