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Winter tire

A winter tire and tread technology, applied in special tires, tire parts, transportation and packaging, etc., can solve problems such as the inability to exhibit tire grip performance, lateral grooves cannot catch snow, etc. The effect of suppressing snow accumulation and suppressing performance

Active Publication Date: 2018-12-21
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when "snow clogging" occurs and the snow cannot be removed from the tread, there is a problem that the lateral grooves cannot catch the snow, that is, the grip performance that the tire originally had can not be exhibited

Method used

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Examples

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Effect test

Embodiment

[0055] The invention is then illustrated by way of examples, but the invention is not limited to these examples.

[0056] Various chemicals used in Examples and Comparative Examples will be described below.

[0057] NR:TSR20

[0058] BR: BR1220 manufactured by Zeon Corporation (unmodified BR, cis content: 96% by mass)

[0059] Carbon black: DIABLACK I manufactured by Mitsubishi Chemical Corporation (ASTM No. N220, N 2 SA: 114m 2 / g, DBP: 114ml / 100g)

[0060] Silica: ULTRASIL VN3 (N 2 SA: 175m 2 / g, average primary particle size: 15nm)

[0061] Silane coupling agent: Si75 (bis(3-triethoxysilylpropyl) disulfide) manufactured by Evonik Degussa

[0062] Oil: Process X-140 (aromatic oil) manufactured by Jikun Nippon Oil & Energy Co., Ltd.

[0063] Aromatic petroleum resin: Sylvatraxx 4401 manufactured by Arizona Chemical Co., Ltd. (main component: α-methylstyrene, softening point: 85° C.)

[0064] Cyclopentadiene-based resin 1: Oppera PR-140 (hydrogenated dicyclopentadiene...

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Abstract

The purpose of the present invention is to provide a winter tire which has excellent on-ice performance, snow clogging resistance and snow adhesion resistance. The present invention relates to a winter tire having a tread which is formed from a rubber composition that contains, per 100 parts by mass of a rubber component containing a natural rubber, 2.5-30 parts by mass of a cyclopentadiene resinand 5-100 parts by mass of silica.

Description

technical field [0001] The present invention relates to a winter tire composed of a predetermined rubber composition. Background technique [0002] In order to travel on ice and snow roads, studded tires and chains mounted on the tires have hitherto been used. However, in the case of using a studded tire and a chain, the road surface is scraped by the spikes of the studded tire and the chain mounted on the tire, which causes a problem of airborne dust from the scraped road material. Therefore, instead of the use of studded tires and chains, winter tires such as studless tires have been proposed as tires for running on snow-covered roads. [0003] In the case of ordinary tires, the coefficient of friction on ice-covered roads is significantly lower than that on ordinary roads, and the tires tend to slip. At the same time, with regard to winter tires, considerations were made from the point of view of materials and design. For example, the development of a rubber compositio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00B60C1/00C08K3/36C08L45/00
CPCC08L7/00C08K3/36C08L9/00B60C1/0016B60C1/0025B60C1/00C08L45/00
Inventor 竹中美夏子
Owner SUMITOMO RUBBER IND LTD
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