Composition for tread base and tire

A technology of tread base and composition, applied in the direction of tire tread/tread pattern, special tires, tire parts, etc., can solve problems such as low fuel consumption, and achieve the effect of improving fuel consumption and improving low

Pending Publication Date: 2021-04-16
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the conventional technology, there is still room for improvement in the overall performance of low fuel consumption, breaking strength, and breaking elongation.

Method used

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  • Composition for tread base and tire
  • Composition for tread base and tire
  • Composition for tread base and tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The base tread composition of the present invention contains an elastomer component, silica, and a dicyclopentadiene-aromatic compound copolymer resin and / or a hydrogenated dicyclopentadiene-based resin. Accordingly, it is possible to improve the overall performance of low fuel consumption, breaking strength, and breaking elongation.

[0018] The above-mentioned composition for a base tread can obtain the above-mentioned effects, and although the reason for obtaining such an effect is not necessarily clear, it is presumed as follows.

[0019] In the conventional method of improving breaking strength (TB) and breaking elongation (EB), fuel efficiency deteriorated, but mixing dicyclopentadiene-aromatic compound copolymer resin and / or hydrogenated dicyclopentadiene-based resin When it is used, the viscosity of the composition tends to increase, and the shear force on the silica during the kneading process can be well exerted, which can improve the dispersibility of the sil...

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Abstract

The purpose of the present invention is to provide: a composition for a tread base, which is capable of improving the overall performance of low fuel consumption, breaking strength and elongation at break; and a tire which uses this composition. The composition for a tread base comprises an elastomer component, silica, and a dicyclopentadiene aromatic compound copolymer resin and / or a hydrogenated dicyclopentadiene resin.

Description

technical field [0001] The present invention relates to a base tread composition and a tire. Background technique [0002] Conventionally, various means have been used to improve the rolling resistance characteristics of tires for the purpose of saving energy. As this means, the tread of the tire has a double structure (inner surface layer and surface layer), and a composition excellent in low fuel consumption is used in the tread base as the inner surface layer (for example, see Patent Document 1). . However, in the conventional technology, there is still room for improvement in the overall performance of low fuel consumption, breaking strength, and breaking elongation. [0003] [Prior Art Literature] [0004] 【Patent Literature】 [0005] [Patent Document 1] Japanese Unexamined Patent Publication No. 2014-189774 Contents of the invention [0006] 【Problems to be solved by the invention】 [0007] An object of the present invention is to solve the above-mentioned prob...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/06C08L9/00C08L45/00C08L91/00C08L53/02C08K13/02C08K3/04C08K3/36C08K5/18C08K5/3437C08K5/098C08K5/09C08K5/20C08K3/22B60C1/00
CPCC08L7/00B60C1/0016B60C11/005Y02T10/86C08L9/06C08L9/00C08L45/00C08L83/08C08L91/00C08L91/06C08K3/04C08K3/36C08K3/06C08K5/09C08K3/22C08K5/31C08K5/47C08K5/18C08K5/3415C08K5/098C08K5/20C08K5/548C08L53/02
Inventor 北村直也石野崇
Owner SUMITOMO RUBBER IND LTD
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