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Rubber composition for tire

A rubber composition and tire technology, which can be used in special tires, tire parts, transportation and packaging, etc., can solve problems such as difficult to ensure wear resistance, and achieve excellent grip and wear resistance on wet roads. Improved road grip and wear resistance, excellent wet road grip

Active Publication Date: 2018-04-20
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the effect of improving rolling resistance and adhesion was found in this rubber composition, it was difficult to ensure the wear resistance required for the above-mentioned pneumatic tire for RV vehicles.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0049] Combining the compounding ingredients shown in Table 3 together, 17 kinds of rubber compositions for tires (Examples 1-8, Comparative Examples 1-9) composed of the compounds shown in Tables 1 and 2 were prepared as follows: desulfurization, vulcanization Components other than the accelerator were kneaded for 5 minutes in a 1.8L closed mixer, and the masterbatch was discharged. Sulfur and a vulcanization accelerator were added to the discharged masterbatch and kneaded with an open roll. In addition, in Tables 1 and 2, since styrene-butadiene rubber (SBR1) and terminal-modified styrene-butadiene rubber (modified SBR1-3) contain 37.5 parts by weight of oil-extending oil, the actual compounding In addition to the amount, the net compounding amount of each SBR after removing the oil-extending oil is also indicated in parentheses. In addition, the total of oil components (extender oil contained in styrene-butadiene rubber and terminal-modified styrene-butadiene rubber, and ar...

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Abstract

The present invention provides a rubber composition for tires with higher low rolling resistance, wet performance and wear resistance than the current level. It is characterized in that, relative to 100 parts by weight of diene rubber, 30 to 60 parts by weight of silica and 20 to 50 parts by weight of carbon black with a nitrogen adsorption specific surface area of ​​120 to 150 m2 / g are blended, including the silica and 50-80 parts by weight of inorganic filler of carbon black are blended, and the diene-based rubber contains 50-80 parts by weight of terminal-modified styrene-butadiene rubber with a vinyl unit content of more than 40 weight percent, and 20-50 parts by weight of butadiene rubber. % by weight, the total amount of oil components in the rubber composition is 10 to 30 parts by weight.

Description

technical field [0001] The present invention relates to a rubber composition for tires with improved low rolling resistance, wet grip and wear resistance compared to conventional ones. Background technique [0002] In recent years, pneumatic tires for passenger cars have been required to have both low rolling resistance and wet grip. In addition, at the same time, improvement in wear resistance is required for prolonging tire life. In particular, pneumatic tires for station wagons (hereinafter referred to as RV vehicles) use rubber compositions that place emphasis on abrasion resistance because they receive a large load from the RV vehicle. However, in recent years, JATMA's labeling (labeling method) system has been started, requiring both low rolling resistance and wet road grip at a higher level, and improving the low rolling resistance and wet road grip of pneumatic tires for RV vehicles. sex. [0003] Conventionally, in order to improve the balance between low rolling...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L15/00C08C19/00C08K3/04C08K3/36C08L9/00C08L45/00C08L91/00
CPCC08L15/00C08L91/00B60C1/0016C08K3/04C08K3/36C08L7/00C08L9/00Y02T10/86C08L9/06
Inventor 武田慎也
Owner THE YOKOHAMA RUBBER CO LTD