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Rubber composition for use in tires

A rubber composition and tire technology, applied in special tires, tire parts, transportation and packaging, etc., can solve problems that cannot be said to be fully realized, so as to ensure wet road grip performance, improve adhesion, and improve wet performance. The effect of road grip performance

Active Publication Date: 2011-06-15
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the desire for the rubber composition to achieve a higher level of both running performance on ice and snow and wet roads has not been fully realized, and there is still room for improvement.

Method used

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  • Rubber composition for use in tires
  • Rubber composition for use in tires
  • Rubber composition for use in tires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0039] According to the formulations shown in Tables 1 and 2, 15 kinds of tires were prepared by using the compounding ingredients shown in Table 3 (reporting the compounding amount [parts by weight] relative to 100 parts by weight of diene rubber) as a common compounding. Rubber composition (embodiment 1~7, comparative example 1~8), other components except sulfur, vulcanization accelerator in the composition are kneaded with 1.8L closed type mixer for 5 minutes, release when reaching 140 ℃ and Cool at room temperature to obtain a masterbatch. Sulfur and a vulcanization accelerator were added to this masterbatch and mixed with an open roll to prepare a rubber composition for tires. In addition, the average glass transition temperature (average Tg1) of the diene rubber in each tire rubber composition and the average of the components containing the diene rubber, an aromatic modified terpene resin, and a plasticizer as an optional component The glass transition temperature (ave...

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Abstract

The invention provides a rubber composition for use in tires. The grip performance on both icy and snowy road surfaces and wet road surfaces are increased to be equal to or beyond conventional levels. The rubber composition for use in tires including from 60 to 120 parts by weight of a silica having a CTAB specific surface area of from 70 to 175 m2 / g and from 3 to 25 parts by weight of an aromatic modified terpene resin excluding terpene phenol resins per 100 parts by weight of a diene rubber including from 30 to 80 weight % of a terminal-modified styrene-butadiene rubber and from 10 to 50 weight % of a butadiene rubber. An average glass transition temperature of the diene rubber is -55 DEG C. or lower and an average glass transition temperature of a component formed from the diene rubber, the aromatic modified terpene resin, and an optional plasticizer is -45 DEG C. or lower.

Description

technical field [0001] The present invention relates to a rubber composition for tires, and more specifically, to a rubber composition for tires capable of improving the grip performance on both icy and snowy roads and wet roads beyond the conventional level. Background technique [0002] Pneumatic tires (studless tires) for icy and snowy roads can improve adhesion to icy and snowy roads and improve grip performance by keeping the hardness of the tread rubber soft even at low temperatures. In addition, in recent years, studless tires have been required to improve the running performance on the above-mentioned icy and snowy roads and the running performance on wet roads (wet roads) not covered with ice and snow. In order to increase the wet road grip performance, styrene-butadiene rubber with a higher glass transition temperature (Tg) is generally used. However, if styrene-butadiene rubber with a high Tg is blended, the Tg of the rubber composition as a whole becomes high, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08L9/00C08L45/00C08K3/36B60C1/00
CPCC08L9/00B60C1/0016C08L65/00C08L15/00C08L57/02C08L2312/00C08K3/36C08L2666/08C08L2666/02
Inventor 三原谕
Owner THE YOKOHAMA RUBBER CO LTD
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