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Rubber composition for studless tire and studless tire using the same

A technology of studless anti-skid tires and rubber compositions, which is applied to tire treads/tread patterns, special tires, tire parts, etc., and can solve the problems of reducing wear resistance and fuel economy

Inactive Publication Date: 2010-03-10
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then, there is the additional problem of reduced wear and fuel economy caused by reversion

Method used

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  • Rubber composition for studless tire and studless tire using the same
  • Rubber composition for studless tire and studless tire using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0086] Although the present invention has been described more specifically based on examples, the present invention is not limited to these examples.

[0087] Various chemicals used in Examples and Comparative Examples are as follows.

[0088] Natural Rubber (NR): RSS #3.

[0089] BR: BR 150B (cis 1,4 binding capacity: 97%, ML 1+4 (100° C.): 40, viscosity of 5% toluene solution at 25° C.: 48 cps, Mw / Mn: 3.3), manufactured by Ube Industries, Ltd.

[0090] Carbon black: DIABLACK I (ISAF carbon black, average particle diameter: 23 nm, DBP oil absorption: 114 ml / 100 g), manufactured by Mitsubishi Chemical Corporation.

[0091] Silica: Ultrasil VN3 (N 2 SA: 175m 2 / g), manufactured by Degussa

[0092] Silane coupling agent: Si-69, manufactured by Degussa Corporation.

[0093] Mineral oil: PS-32 (paraffin process oil), manufactured by Idemitsu Kosan Co., Ltd.

[0094] Fatty acid compound (fatty acid derivative: mixture of zinc salt of aliphatic carboxylic acid and zinc salt o...

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Abstract

The present invention has its object to provide a high performance studless tire, which has both good braking force and high handling stability on ice or snow, at higher productivity and at a lower price for customers. The studless tire comprises a tread made of a rubber composition that contains 0.5 to 5.0 parts by mass of a fatty acid and / or a derivative of the fatty acid per 100 parts by mass of a rubber component.

Description

technical field [0001] The present invention relates to a rubber composition for a studless tire (winter tire) and a studless tire using the rubber composition. Background technique [0002] The use of stud tires has been banned by Japanese law to prevent powder dust pollution from stud tires, so studless tires are now used instead of stud tires in cold regions. In order to improve the grip performance of the studless tire on ice or on snow, there is a method of lowering the modulus of elasticity at low temperature to improve traction. In particular, braking force on ice is largely affected by the effective contact area between rubber and ice. In order to enlarge the effective contact area, it is desirable to obtain a rubber that is flexible at low temperature. [0003] There is a recent demand in the market for studless tires that contribute to handling stability, which is a drawback of conventional studless tires, and performance on ice and snow. In the case of increasi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/00B60C1/00C08L21/00C08K5/09C08L7/00C08L9/00C08K13/02
Inventor 儿岛良治服部高幸菊地尚彦
Owner SUMITOMO RUBBER IND LTD
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