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Rubber composition and tire using same

A rubber composition and rubber technology, which is applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of reinforcement, wear resistance and grip of deteriorated rubber compositions, and achieve excellent processability , Low heat build-up, and high storage modulus effects

Active Publication Date: 2008-04-09
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In any case, however, deterioration of the reinforcing properties, abrasion resistance, and grip performance on wet road surfaces of the rubber composition cannot be avoided

Method used

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  • Rubber composition and tire using same
  • Rubber composition and tire using same
  • Rubber composition and tire using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0084] The following examples are given to illustrate the invention but are not intended as limitations thereof.

[0085] (Method for producing polymer A)

[0086] Add 300 g of cyclohexane, 40 g of 1,3-butadiene, 10 g of styrene and 0.2 mmol of di-tetrahydrofuran propane into an 800 mL pressure glass container that has been dried and purged with nitrogen, and further add 0.4 mmol of n-butyllithium (n-BuLi), followed by polymerization at 50°C for 1.5 hours. The conversion was about 100%. Thereafter, 0.5 ml of 2,6-di-tert-butyl-p-cresol (BHT) in isopropanol (BHT concentration: 5% by mass) was added to the polymerization system to stop the polymerization reaction, and then dried in an ordinary manner to obtain Polymer A is obtained.

[0087] (Method for producing polymer B)

[0088] In addition to using 0.48 mmol of lithium hexamethyleneimide prepared in situ in lithium equivalents [HMI-Li; molar ratio of hexamethyleneimine (HMI) / lithium (Li) = 0.9], with Polymer B was obtai...

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Abstract

This invention relates to a rubber composition having excellent workability, fracture characteristics and wear resistance and a low heat buildup and a high storage modulus (G'), and more particularly to a rubber composition comprising not less than 20 parts by mass of a reinforcing filler (B) and 5 to 60 parts by mass of a low-molecular weight aromatic vinyl compound-conjugated diene compound copolymer (C) having an aromatic vinyl compound content of 5 to 80% by mass, a vinyl bond content in a conjugated diene compound portion of 10 to 80% by mass and a weight average molecular weight as measured with a gel permeation chromatography and converted to polystyrene of 5,000 to 300,000 based on 100 parts by mass of a rubber component (A) containing not less than 10% by mass of a modified conjugated diene-based polymer having at least one functional group.

Description

technical field [0001] The present invention relates to a rubber composition and a tire using the same, more particularly to tires having high filler dispersibility, excellent processability, fracture characteristics and wear resistance, low heat build-up and high storage modulus ( G') rubber composition. Background technique [0002] Recently, reduction in fuel consumption of automobiles is strongly demanded in consideration of worldwide carbon dioxide emission control related to growing interest in environmental issues. In order to meet such demands, it is required to reduce the rolling resistance which is a performance of the tire. As a means of reducing rolling resistance of tires, methods of optimizing tire structures have been studied so far, but at present the most common attempt is to use a rubber composition having low heat build-up as a rubber composition for tires. [0003] As means of obtaining this rubber composition having low heat build-up, reduction in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08L7/00C08L9/06C08K3/04C08K3/36
CPCB60C1/0016C08C19/44C08L15/00C08L21/00C08L9/06C08K3/04C08K3/36C08L7/00C08L2666/08C08K3/013B60C1/00
Inventor 森贺子真崎孝二
Owner BRIDGESTONE CORP
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