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Rubber composition and method of producing same, and tire

一种橡胶组合物、制造方法的技术，应用在特殊轮胎、轮胎零部件、运输和包装等方向，能够解决组合物加工性恶化等问题，达到优异耐断裂性的效果

Inactive Publication Date: 2013-07-03
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the rubber composition at that time was able to achieve sufficient abrasion resistance, but there were problems involved in that such an expensive modified polymer had to be used and the workability of the composition deteriorated

Method used

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  • Rubber composition and method of producing same, and tire
  • Rubber composition and method of producing same, and tire
  • Rubber composition and method of producing same, and tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 6 and comparative example 1 to 2

[0169] A mixture having the composition formulation shown in Table 3 below was kneaded with a Banbury mixer to obtain an unvulcanized rubber composition, which was then sheeted to have a thickness of 2 mm and vulcanized at 145° C. for 30 minutes. The rubber properties of the obtained vulcanized rubber were evaluated according to the above-mentioned method.

[0170] From the formulations of Examples and Comparative Examples shown in Table 3, carbon black was removed; the remaining formulations were individually kneaded and vulcanized in the same manner as above. The abrasion resistance and fracture resistance of the obtained sheet were evaluated. Processability was evaluated in the kneading stage. The results are summarized and shown in Table 3.

[0171] [table 3]

[0172]

[0173] [Note]

[0174] 1) Carbon black: ISAF, trade name "Asahi#80" of Asahi Carbon

[0175] 2) Antiaging agent 6C: N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, Seiko Chemical's trade name "O...

Embodiment 7 to 12 and comparative example 3

[0180]A mixture having the composition formulation shown in Table 4 below was kneaded with a Banbury mixer to obtain an unvulcanized rubber composition, which was then sheeted to have a thickness of 2 mm and vulcanized at 145° C. for 30 minutes. The rubber properties of the obtained vulcanized rubber were evaluated according to the above-mentioned method.

[0181] From the formulations of Examples and Comparative Examples shown in Table 4, carbon black was removed; the remaining formulations were individually kneaded and vulcanized in the same manner as above. The abrasion resistance, fracture resistance and low loss property of the obtained sheet were evaluated. The results are summarized and shown in Table 4.

[0182] [Table 4]

[0183]

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Abstract

The present invention provides a rubber composition comprising: a rubber constituent containing polybutadiene and diene rubber or olefin rubber that is immiscible with the polybutadiene; and a filler, wherein when the Mooney viscosity (ML1+4 / 100 DEG C) of the polybutadiene is ML(I) and the Mooney viscosity (ML1+4 / 100 DEG C) of the diene rubber or olefin rubber that is immiscible with the polybutadiene is ML(II), the relation of ML(I) = ML(II) is satisfied, the crashworthiness is excellent without decreasing durability such as wear resistance of the tire, the good working property can be achieved, and further the decrease of rolling resistance of tire can be achieved. The present invention also provides a method of producing the rubber composition, and a tire using the rubber composition.

Description

technical field [0001] The present invention relates to a rubber composition and a method for producing the same, and to a tire using the rubber composition, and particularly to a rubber composition suitable for use in a predetermined portion of an automobile tire to improve the fuel efficiency of the tire and to impart sufficient durability to the tire Abrasion and breaking properties and also imparting good grip performance thereto, and to a method for manufacturing the rubber composition and a tire using the rubber composition. Background technique [0002] Recently, with the social demand for energy saving, it is strongly desired for automobiles to reduce the heat generation of rubber for tires and to reduce fuel consumption. Therefore, as rubber compositions used for treads and other parts of tires, rubber compositions having low tan δ (hereinafter also referred to as "low loss properties") and excellent low heat build-up properties are desired. Furthermore, from the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L47/00B60C1/00C08K3/04C08L21/00
CPCB60C1/00B60C1/0016B60C1/0025C08L7/00C08L9/00C08K3/013Y02T10/86
Inventor 松下纯子
Owner BRIDGESTONE CORP
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