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Tire rubber composition and pneumatic tire

A rubber composition and tire technology, applied in the field of rubber composition for tires and pneumatic tires, can solve the problems of vehicle handling (handling stability, wet grip performance and wear resistance, rubber composition hardness reduction, etc., to achieve Good hardness, excellent performance, effect of improving silica dispersion and fuel economy

Inactive Publication Date: 2019-06-04
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this technique lowers the hardness of the rubber composition, disadvantageously causing tire softening, resulting in reduced vehicle handling (handling stability), wet grip performance and wear resistance

Method used

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  • Tire rubber composition and pneumatic tire
  • Tire rubber composition and pneumatic tire
  • Tire rubber composition and pneumatic tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0087] The present invention is specifically described with reference to, but not limited to, examples.

[0088] Chemicals used in Examples and Comparative Examples are listed below.

[0089] SBR: commercially available from Japan Zeon Co., Ltd. (S-SBR, styrene content: 41% by mass)

[0090] BR: commercially available from JSR Corporation, Japan (cis content: 95% by mass)

[0091] Carbon black: Shoblack N330 (N 2 SA: 75m 2 / g, DBP oil absorption: 102mL / 100g)

[0092] Silica: ULTRASIL VN3 (N 2 SA: 175m 2 / g)

[0093] Silane coupling agent: Si266 (bis(3-triethoxysilylpropyl) disulfide) purchased from Evonik Degussa

[0094] Compound A: LIPONOL DA-T / 13 (compound of formula (I) (formula (I-1)))

[0095] Compound B: LIPONOL DA-T / 25 (compound of formula (I) (formula (I-1)))

[0096] PEG 4000: PEG#4000 (polyethylene glycol, weight average molecular weight: 4000) purchased from NOF Corporation (HO(CH 2 CH 2 O) p H, where p = about 90)

[0097] Compound C: LIPOMIN DA-CD (c...

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Abstract

Provided are a tire rubber composition with which silica dispersibility and low fuel consumption can be improved while maintaining good hardness, and a pneumatic tire using same. in particular, the present invention relates to a tire rubber composition comprising a rubber component, silica, and at least one kind of silica dispersing agent selected from a group consisting of a compound representedby formula (I) and a compound represented by formula (II).

Description

technical field [0001] The present invention relates to a rubber composition for tires and a pneumatic tire comprising the rubber composition. Background technique [0002] Traditionally, the fuel consumption of vehicles has been reduced by reducing the rolling resistance of tires (or improving their rolling resistance properties). However, due to the increasing demand for highly fuel-efficient vehicles in recent years, it is desired that rubber compositions used for manufacturing treads, which occupy a large proportion of the tire volume among tire components, have excellent low heat build-up properties (excellent fuel economy). [0003] It is known that reducing the amount of reinforcing filler in a rubber composition provides a satisfactory low heat build-up. However, this technique lowers the hardness of the rubber composition, disadvantageously causing tire softening, resulting in reduced vehicle handling (handling stability), wet grip performance, and abrasion resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L21/00B60C1/00C08K3/04C08K3/36C08K5/17C08L9/06
CPCB60C1/00C08K3/36C08K5/17B60C1/0016C08L9/06C08L9/00C08L91/00C08L91/06C08K3/04C08K5/548C08K5/18C08K5/09C08K3/06C08K3/22C08K5/31C08K5/47C08L2205/025C08L2205/035
Inventor 山田宏明吉安勇人
Owner SUMITOMO RUBBER IND LTD
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