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Pneumatic tire

A technology for pneumatic tires and treads, which is applied to special tires, tire parts, tire treads/tread patterns, etc., and can solve problems such as insufficient handling stability and reduced ride comfort

Inactive Publication Date: 2006-12-13
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this tire cannot fully satisfy the compatibility of handling stability, ride comfort and rolling resistance reduction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] The present invention will be illustrated by examples, but the invention is not limited thereto.

[0037] Various chemicals used in the examples are described below.

[0038] NR:RSS#3

[0039] BR: BR150B, purchased from Ube Industries Co., Ltd.

[0040] Polybutadiene rubber (VCR) containing syndiotactic-1,2-polybutadiene: VCR412 (syndiotactic-1,2-polybutadiene crystal dispersion), purchased from Ube Industry Co., Ltd.

[0041] Carbon black 1: DIABLACK (N220, N 2 SA: 114m 2 / g), purchased from Mitsubishi Chemical Company

[0042] Carbon black 2: SEAST N (N330, N 2 SA: 74m 2 / g), purchased from Tokai Carbon Co., Ltd.

[0043] Operating oil: DIANAPR CESS AH40, purchased from Idemitsu Kosan Co., Ltd.

[0044] Wax: SUNNOC WAX, available from OUCHI SHINKO Chemical Industry Co., Ltd.

[0045] Antioxidant: OZONONE 6C, purchased from Seiko Chemical Co., Ltd.

[0046] Stearic acid: KIRI, purchased from NOF company

[0047] Zinc oxide: GINREI R, purchased from Toho Zmc ...

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PUM

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Abstract

A pneumatic tire which has a base tread having sufficient rigidity, hardness and crack resistance, and sufficiently satisfies the compatibility among steering stability, ride quality and lowering of rolling resistance is provided. The pneumatic tire has a base tread comprising a rubber composition containing 0.5 to 10 parts by weight of a thermosetting resin based on 100 parts by weight of a diene rubber, wherein complex elastic modulus E* of the rubber composition measured at a measurement temperature of 60 DEG C and dynamic strain of 1 % is 8 to 15 MPa, tan delta is at most 0.15, and elongation at break EB of the rubber composition in a tensile test is at least 300 %.

Description

technical field [0001] The present invention relates to a pneumatic tire. Background technique [0002] In order to reduce the rolling resistance of tires, or to improve the handling stability of automobiles, various methods have been studied. One of these methods is known to give the tread of the tire a two-layer structure (inner layer and surface layer). [0003] Recently, the expansion and improvement of the road network has increased the possibility of high-speed driving in addition to the remarkable enhancement of automobile performance and facilities. In particular, at the time of high-speed running, a tire having a tread base capable of improving handling stability and ride comfort is required, and sufficient rigidity and hardness of the tread base having a large influence on the tire are required. [0004] In order to obtain such a base tread, a large amount of carbon black is mixed in the rubber composition for a base tread to incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/00C08K3/14C08K5/07B60C1/00
CPCC08L7/00B60C11/005B60C2011/0025C08L61/12C08K5/34922C08L21/00B60C1/0016C08L2205/03C08L9/00Y02T10/86C08L2666/14
Inventor 水野洋一
Owner SUMITOMO RUBBER IND LTD
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