Rubber composition

A technology of rubber composition and rubber, which is applied in the field of rubber composition, can solve the problems of low heat generation, and achieve the effect of low heat generation and excellent dispersibility

Active Publication Date: 2021-01-19
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, due to the interaction between the reinforcing fillers, the reinforcing fillers may aggregate in the rubber composition and sufficient properties (such as low heat generation, etc.) may not be obtained.

Method used

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  • Rubber composition
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0190] Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to this.

[0191] 〔Synthesis example〕

[0192] Comparative modified IR and specific modified IR 1 to 5 were synthesized as described below.

[0193] Here, the specific modified IRs 1 to 5 all have a functional group represented by the formula (m1) described later corresponding to the specific functional group at the terminal, and have a viscosity of 2,000 Pa·s or less, so they correspond to the above-mentioned "specific modified IR". On the other hand, the comparative modified IR has a specific functional group at the terminal, but its viscosity exceeds 2,000 Pa·s, so it does not correspond to the above-mentioned "specific modified IR".

[0194]

[0195] Add n-BuLi (manufactured by Kanto Chemical Industry: 1.60mol / L (hexane solution), 51mL, 82mmol) to a mixed solution of isoprene (708g, 10.4mmol) in cyclohexane (4.0kg), at 50°C Stirring was continued for 6 hours. A...

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Abstract

An objective of the present invention is to provide a rubber composition exhibiting excellent dispersibility and low heat build-up properties. The rubber composition of the present invention includes:a modified isoprene polymer; a rubber component (other than a modified isoprene polymer); and a reinforcing filler. The reinforcing filler contains carbon black and / or silica, the modified isoprene polymer has, at one end, a functional group containing a nitrogen atom and a silicon atom, and the viscosity of the modified isoprene polymer is no more than 2000 Pa.s, provided that the viscosity is measured using a cone and plate viscometer.

Description

technical field [0001] The present invention relates to rubber compositions. Background technique [0002] Generally, reinforcing fillers such as carbon black and silica are compounded in rubber compositions containing natural rubber and the like used in tires and the like. On the other hand, due to the mutual interaction of the reinforcing fillers, the reinforcing fillers may aggregate in the rubber composition, and sufficient properties (for example, low heat generation properties, etc.) may not be obtained. [0003] Under such circumstances, a rubber composition in which epoxidized natural rubber or the like is blended with natural rubber has been proposed (for example, Patent Document 1). [0004] prior art literature [0005] patent documents [0006] Patent Document 1: Japanese Unexamined Patent Publication No. 2010-77257 Contents of the invention [0007] The problem to be solved by the invention [0008] The inventors of the present invention studied a rubber ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08C19/25C08K3/013C08K3/04C08K3/36C08K5/548C08L7/00
CPCC08C19/25C08L15/00C08L7/00C08K2201/006C08L9/00Y02T10/86C08K3/36C08K3/04C08K5/548
Inventor 新家雄上西和也黑坂香织
Owner YOKOHAMA RUBBER CO LTD
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