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Rubber composition and tire

A rubber composition and rubber technology, applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of insufficient improvement and low heat generation, and achieve the effect of good wet grip performance and low heat generation.

Active Publication Date: 2010-06-09
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a problem that low heat generation properties cannot be sufficiently improved

Method used

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  • Rubber composition and tire
  • Rubber composition and tire
  • Rubber composition and tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0474] Next, the present invention will be specifically described based on examples, but the present invention is not limited to these examples.

[0475] Each chemical used in the synthesis of the monomer (1) is listed below.

[0476] Cyclohexane: Cyclohexane (manufactured by Kanto Chemical Co., Ltd.)

[0477] Pyrrolidine: pyrrolidine (manufactured by Kanto Chemical Co., Ltd.)

[0478] Divinylbenzene: divinylbenzene (manufactured by Sigma-Aldrich Japan K.K.)

[0479] 1.6M hexane solution of n-butyllithium: 1.6M hexane solution of n-butyllithium (manufactured by Kanto Chemical Co., Ltd.)

[0480] Isopropyl alcohol: Isopropyl alcohol (manufactured by Kanto Chemical Co., Ltd.)

manufacture example 1

[0481] Production Example 1 (Synthesis of Monomer (1))

[0482] To a 100 ml container in which the air was sufficiently replaced with nitrogen, 50 ml of cyclohexane, 4.1 ml (3.6 g) of pyrrolidine, and 6.5 g of divinylbenzene were added. At 0° C., 0.7 ml of a 1.6 M n-butyllithium hexane solution was further added thereto, and the mixture was stirred. After 1 hour, isopropanol was added to the mixture to stop the reaction, followed by extractive purification to obtain monomer (1).

[0483] The respective chemicals used in the synthesis of polymers (1) and (2) are listed below.

[0484] Cyclohexane: Cyclohexane (manufactured by Kanto Chemical Co., Ltd.)

[0485] Styrene: Styrene (manufactured by Kanto Chemical Co., Ltd.)

[0486] Butadiene: 1,3-butadiene (manufactured by Takachiho Chemical Industry Co., Ltd.)

[0487] Tetramethylethylenediamine: N, N, N', N'-tetramethylethylenediamine (manufactured by Kanto Chemical Co., Ltd.)

[0488] 1.6M hexane solution of n-butyllithium:...

manufacture example 2

[0491] Production Example 2 (Synthesis of Polymer (1))

[0492] Into the 1000ml pressure-resistant vessel in which the air was fully replaced by nitrogen, 600ml of cyclohexane, 12.6ml (11.4g) of styrene, 71.0ml (41.0g) of butadiene, 0.29g of monomer (1), and 0.11 ml tetramethylethylenediamine. At 40° C., 0.2 ml of a 1.6 M n-butyllithium hexane solution was further added thereto, and the mixture was stirred. After 3 hours, 3 ml of isopropanol was added to the mixture to stop the polymerization. After adding 1 g of 2,6-tert-butyl-p-cresol to the reaction solution, the solution was subjected to reprecipitation treatment with methanol, and heat-dried to obtain a polymer (1).

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Abstract

The present invention has its object to provide a rubber composition that can be used for a tread to supply a tire excellent in low heat build-up property and wet grip performance. The present invention relates to a rubber composition including a rubber component that contains a modified styrene-butadiene rubber in an amount of 5% by weight or more per 100% by weight of the rubber component, the modified styrene-butadiene rubber having, in a main chain thereof, a constitutional unit derived from a specific nitrogen-containing compound; and the rubber composition further including silica in anamount of 10 to 150 parts by weight per 100 parts by weight of the rubber component.

Description

technical field [0001] The present invention relates to a rubber composition and a tire having a tread prepared using the rubber composition. Background technique [0002] Many studies have conventionally been conducted in order to reduce fuel consumption by reducing the rolling resistance of tires (also expressed as "by improving rolling resistance performance"). In recent years, further reductions in fuel consumption of automobiles have been strongly demanded, and rubber compositions used for treads (occupying a large portion of tires) among various tire components have been required to have more excellent low heat generation properties. [0003] A known method for sufficiently improving the low heat build-up property of a rubber composition is a method in which the content of reinforcing filler in the rubber composition is reduced. In this case, however, the hardness of the rubber composition is lowered, and thus the obtained tire is softened, which disadvantageously lea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08L7/00C08K3/36B60C1/00
CPCC08K5/548C08L7/00C08K3/36B60C1/0016C08L15/00C08C19/44C08L9/06C08L2666/08
Inventor 上坂宪市
Owner SUMITOMO RUBBER IND LTD
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