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Rubber composition for tread

一种橡胶组合物、胎面的技术，应用在轮胎胎面/胎面花纹、特殊轮胎、轮胎零部件等方向，能够解决没有积极地混合二氧化硅、硫化延迟等问题

Inactive Publication Date: 2006-12-13
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] JP-A-2002-226629 discloses a rubber composition for treads containing tetrabenzylthiuram disulfide and N-cyclohexyl-2-benzothiazole sulfenamide As a vulcanization accelerator, but silica is not actively mixed, and when silica is used, there is a problem that silica adsorbs the vulcanization accelerator and vulcanization is delayed

Method used

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  • Rubber composition for tread
  • Rubber composition for tread
  • Rubber composition for tread

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Embodiment 1 to 6 and comparative example 1 to 6

[0052]

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Abstract

A rubber composition for a tread optimizing a vulcanization speed in a vulcanization step and, further, improving heat aging resistance is provided. A rubber composition for a tread comprising 20 to 90 parts by weight of silica, 0.5 to 2 parts by weight of (A) a guanidine vulcanization accelerator, 0.1 to 0.5 part by weight of (B) a thiuram vulcanization accelerator, and 0.5 to 2 parts by weight of (C) a sulfenamide vulcanization accelerator represented by the general formula (1): (wherein R is a linear alkyl group or a branched alkyl group having 1 to 18 carbons), based on 100 parts by weight of a rubber component.

Description

technical field [0001] The present invention relates to a rubber composition for treads. Background technique [0002] Among the various parts of the tire, the tread is the part that especially affects the rolling resistance of the tire. In order to reduce the rolling resistance, mixed silica is usually used as a reinforcing filler. [0003] Since the rubber composition for treads is prone to aging due to heat generated during running, it is required to have excellent heat aging resistance. [0004] In the step of vulcanizing the rubber composition for treads containing silica, when the vulcanization rate becomes high, problems such as premature vulcanization occur due to the influence of the silane coupling agent used in combination with silica, Therefore it is necessary to vulcanize at an appropriate vulcanization rate. [0005] Therefore, rubber compositions for treads containing silica are required to have excellent heat aging resistance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L21/00C08K5/44B60C1/00B60C11/00C08K5/31C08K3/36C08K5/40
CPCC08K3/36C08K5/0025C08K5/31C08K5/40C08K5/47C08L21/00
Inventor 宫崎达也
Owner SUMITOMO RUBBER IND LTD
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