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Rubber composition and tire made therefrom

一种橡胶组合物、橡胶的技术，应用在特殊轮胎、轮胎零部件、运输和包装等方向，能够解决不能充分改善橡胶组合物加工性、不能充分体现填充剂分散性、低发热性等问题

Inactive Publication Date: 2008-09-17
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when the above-mentioned modified conjugated diene polymer is used as a rubber component, there is a problem that when a large amount of a softener, especially an aromatic oil, is added, the effect of improving the dispersibility of the filler cannot be fully exhibited, and the improvement cannot be sufficiently improved. Processability, low heat generation, fracture characteristics and wear resistance of rubber composition

Method used

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  • Rubber composition and tire made therefrom
  • Rubber composition and tire made therefrom
  • Rubber composition and tire made therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0106] (Manufacturing method of polymer A)

[0107] In a 800mL pressure-resistant glass container that was dried and replaced with nitrogen, 300g of cyclohexane, 40g of 1,3-butadiene, 10g of styrene, 0.2mmol of ditetrahydrofurylpropane were added, and n-butyllithium (n-BuLi ) 0.4 mmol, and then carry out polymerization reaction at 50° C. for 1.5 hours. The polymerization conversion rate at this time was almost 100%. Then, 0.5 mL of isopropanol solution (BHT concentration: 5% by mass) of 2,6-di-tert-butyl-p-cresol (BHT) was added to the polymerization reaction system to stop the polymerization reaction, followed by drying according to a common method. Polymer A is obtained.

[0108] (Manufacturing method of polymer B)

[0109] As a polymerization initiator, 0.48 mmol of in-situ prepared lithium hexamethyleneimide [HMI-Li: hexamethyleneimine (HMI) / lithium (Li) molar ratio = 0.9] was used in lithium equivalent, 0.48 mmol, Except for this, it carried out similarly to the said ...

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Abstract

A rubber composition which comprises 100 parts by mass of a rubber ingredient (A) comprising 10 mass% or more modified conjugated diene polymer having at least one kind of functional groups and, incorporated therein, at least 20 parts by mass of a reinforcing filler (B) and 5-60 parts by mass of a modified aromatic vinyl compound / conjugated diene compound copolymer (C) which has at least one kind of functional groups and in which the aromatic vinyl compound content is 5-80 mass%, the content of vinyl bonds attributable to the conjugated diene compound is 10-80 mass%, and the weight-average molecular weight as determined through measurement by gel permeation chromatography and calculation for polystyrene is 5,000-500,000. The rubber composition is excellent in workability, fracture properties, and wearing resistance and is reduced in heat buildup.

Description

technical field [0001] The present invention relates to a rubber composition and a tire using the rubber composition, and in particular to a rubber composition having high filler dispersibility and excellent processability, fracture characteristics, wear resistance and low heat generation. Background technique [0002] In recent years, interest in environmental issues has increased, and in connection with the trend of global carbon dioxide emission regulations accompanying this, the demand for reduction in fuel consumption of vehicles has become more stringent. In response to such demands, tire performance is also required to reduce rolling resistance. As a method of reducing the rolling resistance of a tire, a method of optimizing the structure of the tire has been studied, but the use of a rubber composition with lower heat generation as the rubber composition applied to the tire is currently the most common method. [0003] As a method of obtaining such a rubber composit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00B60C1/00C08K3/00C08L25/10
CPCC08K3/36C08L9/06B60C1/00C08L25/10C08L21/00C08C19/44B60C1/0016C08K3/0033C08L15/00C08L7/00C08L35/06C08K3/013C08L2666/04C08L2666/08C08K3/00
Inventor 神保尚久森贺子
Owner BRIDGESTONE CORP
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