Rubber composition and pneumatic tire

一种橡胶组合物、橡胶的技术，应用在特殊轮胎、轮胎零部件、滚动阻力优化等方向，能够解决加工性恶化、橡胶强度、耐磨性降低、很难兼顾低油耗性和加工性等问题，达到改善加工性、低油耗性的效果

Inactive Publication Date: 2014-07-09
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using modified rubber, on the one hand, the reaction efficiency between silica and rubber (polymer) is improved, and the fuel consumption is improved, but on the other hand, the Mooney viscosity tends to increase and the workability tends to deteriorate. Difficult to balance low fuel consumption and workability
In addition, when using modified rubber, the combination of silica and rubber is too tight, and the strength and abrasion resistance of the rubber may also decrease

Method used

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  • Rubber composition and pneumatic tire
  • Rubber composition and pneumatic tire
  • Rubber composition and pneumatic tire

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Embodiment

[0302] The present invention will be specifically described based on the examples, but the present invention is not limited thereto.

[0303] Hereinafter, various chemicals used for synthesis and polymerization will be briefly described. In addition, chemicals are purified according to conventional methods as necessary.

[0304] THF: Anhydrous tetrahydrofuran manufactured by Kanto Chemical Co., Ltd.

[0305] Sodium hydride: manufactured by Kanto Chemical Co., Ltd.

[0306] Diethylamine: manufactured by Kanto Chemical Co., Ltd.

[0307] Methylvinyldichlorosilane: manufactured by Shin-Etsu Chemical Co., Ltd.

[0308] Anhydrous hexane: manufactured by Kanto Chemical Co., Ltd.

[0309] Styrene: manufactured by Kanto Chemical Co., Ltd.

[0310] Butadiene: 1,3-butadiene manufactured by Tokyo Chemical Industry Co., Ltd.

[0311] TMEDA: Tetramethylethylenediamine manufactured by Kanto Chemical Co., Ltd.

[0312] n-Butyllithium solution: 1.6M n-butyllithium hexane solution manuf...

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Abstract

This invention provides a rubber composition capable of improving workability, low fuel consumption, rubber strength, abrasion resistance, and wet grip performance in a balanced manner; and a pneumatic tire in which same is used. This invention relates to a rubber composition comprising, at the active end of a copolymer, a conjugated diene polymer obtained by reacting a compound containing a nitrogen atom and / or a silicon atom, and silica having a nitrogen-adsorption specific surface area of 40-400 m2 / g. The copolymer is obtained by polymerizing a monomer component comprising a conjugated diene compound and a silicon-containing vinyl compound using a polymerization initiator as represented by formula (I). The amount of the conjugated diene polymer and the amount of the polyisoprene rubber content are 1 to 60wt% and 0-99wt%, respectively, relative to 100wt% of the rubber component. The silica content is 10-80 parts by weight to 100 parts by weight of rubber component, and the carbon ratio is at least 50.

Description

technical field [0001] The present invention relates to a rubber composition and a pneumatic tire produced using the same. Background technique [0002] In recent years, due to increasing attention to environmental issues, there has been a strong demand for low fuel consumption of automobiles, and rubber compositions used in automobile tires are also required to have excellent low fuel consumption. As a rubber composition for automobile tires, a rubber composition containing a conjugated diene-based polymer such as polybutadiene or butadiene-styrene copolymer, and a filler such as carbon black or silica is generally used Wait. [0003] As a method of improving low fuel consumption, for example, Patent Document 1 proposes a method of using a diene-based rubber (modified rubber) modified with an organosilicon compound containing an amino group and an alkoxy group. However, when the modified rubber is used, the reaction efficiency between silica and rubber (polymer) is improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00B60C1/00C08C19/22C08C19/25C08F230/08C08F236/04C08K3/04C08K3/36C08K5/548C08L9/00
CPCB60C1/0016C08C19/22C08C19/25C08C19/44C08K3/36C08K5/548C08L7/00C08L9/00C08L15/00C08F230/085C08F30/08Y02T10/86
Inventor 石野崇鸟田一哉
Owner SUMITOMO RUBBER IND LTD
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