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Tire

A tire and tread technology, applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of deterioration of tensile resistance and wear resistance, and achieve the effect of improving the overall performance

Pending Publication Date: 2022-01-14
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, the rubber composition tends to deteriorate in tensile resistance and abrasion resistance due to a decrease in the content of its polymer component

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0170] The present invention is specifically described with reference to examples, but the present invention is not limited to the examples.

[0171] The chemicals used in Examples and Comparative Examples are listed below.

[0172]

[0173] N9548 (E-SBR, oil-extended type (oil content: 37.5 parts by mass, relative to 100 parts by mass of rubber solids), styrene content: 35 mass%, vinyl content: 18 mass%, Tg: -40°C, Mw : 1,090,000), available from Zeon Corporation

[0174]

[0175] NS612 (S-SBR, non-oil-extended type, styrene content: 15% by mass, vinyl content: 30% by mass, Tg: -65°C, Mw: 780,000), available from Zeon Corporation

[0176]

[0177] CB25 (BR synthesized using Nd catalyst (Nd-catalyzed BR, cis content: 97% by mass, vinyl content: 0.7% by mass, Tg: -110°C)), available from LANXESS

[0178]

[0179] SHOBLACK N220(N 2 SA: 114m 2 / g), available from Cabot Japan

[0180]

[0181] Apyral 200SM(N 2 SA: 15m 2 / g), available from ...

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Abstract

The present invention provides a tire in which overall performance including wet grip performance and wear resistance can be improved. The present invention relates to a tire provided with a tread configured from a rubber composition which contains a rubber component and a silane coupling agent having a sulfur content of 10 mass% or more, and in which the amount of ash is 36 mass% or more and the amount of sulfur after acetone extraction is 1.0 mass% or less.

Description

technical field [0001] The invention relates to a tire. Background technique [0002] It is known that wet grip performance improves when a large amount of silica or softening agent is incorporated (see, for example, Patent Document 1). In this case, however, the rubber composition tends to deteriorate in tensile resistance and abrasion resistance due to a decrease in the content of its polymer component. [0003] Furthermore, it is known that abrasion resistance improves when a mercapto-based silane coupling agent is used as a silane coupling agent incorporated with silica (see, for example, Patent Document 2). [0004] reference list [0005] patent documents [0006] Patent Document 1: JP 6033786 B [0007] Patent Document 2: JP 2012-122015 A Contents of the invention [0008] technical problem [0009] However, the use of a mercapto-based silane coupling agent may not ensure sufficient abrasion resistance when a large amount of silica or softener is incorporated ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08L9/00C08K5/548C08K7/26B60C1/00
CPCC08L9/06B60C1/0016C08L9/00C08K5/548C08K7/26C08K2003/2227C08L91/00C08L25/16C08L91/08C08L45/00C08K3/04C08K3/36C08K5/098C08K5/20C08K5/09C08K5/18C08K3/22C08K3/06C08K5/47C08K5/31C08L83/08C08L71/02
Inventor 小森佳彦宫崎达也
Owner SUMITOMO RUBBER IND LTD