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Rubber composition for tire tread

A technology of rubber composition and tire tread, which is applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of insufficient and sufficient satisfaction, and achieve the effect of excellent wet grip performance

Active Publication Date: 2016-07-06
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, only adjusting the Tg of SBR is not enough to fully meet the requirements of consumers who demand tire wet grip performance, handling stability and wear resistance

Method used

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  • Rubber composition for tire tread
  • Rubber composition for tire tread
  • Rubber composition for tire tread

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0060] 23 types of rubber compositions for tire treads (Examples 1 to 10 and Comparative Examples 1 to 13) having the compounding compositions shown in Tables 1 to 3 were prepared as follows. That is, in addition to sulfur, vulcanization accelerator, and cyclic polysulfide components, various rubber compositions were kneaded in a 1.8 L closed mixer at 160°C for 5 minutes, and then the master batch was discharged. Sulfur, a vulcanization accelerator, and a cyclic polysulfide are added to the above-mentioned master batch and kneaded with an open roll to prepare. In addition, for SBR containing extender oil in Tables 1 to 3, the net compounding amounts of various rubber components are described in parentheses.

[0061] The obtained 23 types of rubber compositions for tire treads were subjected to strengthening vulcanization at 160°C for 20 minutes in respective predetermined molds to prepare vulcanized rubber samples. Then, the rubber hardness, 300% modulus, tensile breaking streng...

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Abstract

The invention provides a rubber composition for tire treads, the rubber composition contains styrene-butadiene rubber in an amount of 100 parts by weight, silicon dioxide in an amount of 90 to 170 parts by weight, and a compounding amount of 10-30 parts by weight of aromatic modified terpene resin. Contains 40 to 100% by weight of solution-polymerized styrene-butadiene rubber S-SBR1 and 60 to 0% by weight of solution-polymerized styrene-butadiene rubber S when the total amount of styrene-butadiene rubber is 100% by weight -SBR2. S-SBR1 contains 30 to 38% by weight of styrene and 60 to 80% by weight of ethylene when the total is 100% by weight, the glass transition temperature is -20°C to -5°C, and the weight average molecular weight is 1 million to 1.8 million . Further, the glass transition temperature of S-SBR2 is not less than -30°C and less than -20°C, and the weight average molecular weight is 1 million to 1.8 million.

Description

[0001] Cross references to related applications [0002] This application is based on the Japanese patent application 2012-051957 filed with the Japan Patent Office on March 8, 2012 and the Japanese patent application 2012-251551 filed with the Japan Patent Office on November 15, 2012. The entire contents of these two applications are incorporated by reference. The method is incorporated into this article. Technical field [0003] The present invention relates to a rubber composition for tire treads. More specifically, the present invention relates to a rubber composition for tire treads that provides a pneumatic tire with excellent wet grip performance, handling stability, and wear resistance . Background technique [0004] The performance required by pneumatic tires (hereinafter referred to as "tires") for high-performance automobiles involves many aspects. As the above-mentioned performance, particularly good performances such as handling stability during high-speed driving, st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/06C08L45/00C08L81/04C08K13/02C08K3/36C08K3/06C08K5/5419B60C1/00
CPCB60C1/0016C08K3/36C08L57/02C08K5/5419C08L9/06
Inventor 瀧澤阳一串田直树
Owner THE YOKOHAMA RUBBER CO LTD