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Rubber composition

A rubber composition, rubber technology, applied in the direction of tire parts, transportation and packaging, wheels, etc., can solve problems such as adhesion defects

Inactive Publication Date: 2008-05-28
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, thiuram-based vulcanization accelerators, which are said to have a short scorch time, allow vulcanization to occur faster on the steel cord surface than with copper, and therefore, adhesion defects occur

Method used

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  • Rubber composition
  • Rubber composition
  • Rubber composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1、 Embodiment 1-2 and comparative example 1-3

[0022] sample preparation

[0023] In each of the formulations shown in Table I, the various ingredients except the vulcanization accelerator and sulfur were mixed in a 1.5-liter internal mixer for 7.5 minutes to obtain master batches. A vulcanization accelerator and sulfur were mixed into the masterbatch by open rolls to obtain a rubber composition.

[0024] Next, the rubber composition thus obtained was vulcanized at 148° C. for 45 minutes in a mold of 15×15×0.2 cm to prepare a vulcanized rubber sheet, and then the physical properties of the vulcanized rubber were measured using the test methods shown below. The results are shown in Table I.

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PUM

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Abstract

A rubber composition containing (A) 100 parts by mass of a rubber component containing 30 parts by mass or more of a diene-based rubber, (B) 0.1 to 1.0 parts by mass of dithiosalicylic acid and (C) 0.05 to 0.5 part by mass, in terms of a metal content of an organic metal salt and a pneumatic tire using the same, whereby an alternative to DCBS exhibiting adhesion characteristics of rubber with steel cord equivalent to that of DCBS and capable of being applied to rubber for a belt cord and / or an edge cushion of a tire can be developed.

Description

technical field [0001] The present invention relates to a kind of rubber composition, relate to a kind of rubber composition more specifically, and this rubber composition comprises compounding therein as N, N'-dicyclohexyl-1,3-benzothiazole-2-sulfinic acid Dithiosalicylic acid (dithiosalicylic acid) which is a substitute for amide (DCBS) and is suitable for use as a belt cord or a belt edge liner, etc. of a pneumatic tire. Background technique [0002] Slow motion accelerators such as DCBS (DZ) have been used in the past as vulcanization accelerators for steel cord adhesive rubber compositions for pneumatic tires (see, for example, Ishikawa, Y.: Rubber Chem. Technol., 57, 855 (1984) and Van Ooij. W. J.: Rubber Chem. Technol., 52, 605 (1979)). However, DCBS was designated as a "Class I detection chemical substance" on January 13, 2006, therefore, in recent years, it can provide rubber and steel cords with adhesive properties equivalent to DCBS and can be used as a substitut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/00C08K5/44B60C1/00B60C5/00
CPCC08K5/098C08K5/375Y10T152/1081C08L21/00
Inventor 崔源文松田敬
Owner THE YOKOHAMA RUBBER CO LTD
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