Pneumatic tire

一种充气轮胎、胎面的技术，应用在特殊轮胎、轮胎零部件、轮胎胎面/胎面花纹等方向，能够解决不能充分满足操控稳定性、乘座舒适性降低等问题

Inactive Publication Date: 2009-01-21
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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  • Pneumatic tire
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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 Zinc...

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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°C and dynamic strain of 1 % is 8 to 15 MPa, tan ´ is at most 0.15, and elongation at break EB of the rubber composition in a tensile test is at least 300 %. The rubber composition further comprises carbon black having a nitrogen-specific area of 74 to 115 m 2 / g and the thermosetting resin is 0,5 to 2,5 parts by weight of a resorcin formaldehyde resin.

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 increase rigidity, but a tire satisfy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/00C08K3/14C08K5/07B60C1/00
CPCC08K5/34922B60C11/005B60C2011/0025C08L61/12C08L7/00B60C1/0016C08L21/00C08L2205/03C08L9/00Y02T10/86C08L2666/14
Inventor 水野洋一
Owner SUMITOMO RUBBER IND LTD
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