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Rubber Composition And Pneumatic Tire Comprising Tread Formed From Said Rubber Composition

一种橡胶组合物、化合物的技术，应用在特殊轮胎、轮胎零部件、运输和包装等方向，能够解决低燃耗性、橡胶组合物硬度升高、加工性恶化等问题，达到改善低燃耗性、良好加工性的效果

Inactive Publication Date: 2017-07-04
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, even with the method of introducing a functional group having affinity with the filler, the method of using a high-molecular-weight polymer, or the method of using a polymer with a high Tg by increasing the amount of styrene, the hardness of the rubber composition increases, Problems such as workability deterioration
[0005] Patent Document 1 discloses a tire for which fuel consumption, wear resistance, and wet grip performance have been improved by compounding a liquid resin having a softening point of -20 to 45°C and specific silica. rubber composition, but there is still room for improvement in terms of improving these properties in a well-balanced manner while making processability good

Method used

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  • Rubber Composition And Pneumatic Tire Comprising Tread Formed From Said Rubber Composition
  • Rubber Composition And Pneumatic Tire Comprising Tread Formed From Said Rubber Composition
  • Rubber Composition And Pneumatic Tire Comprising Tread Formed From Said Rubber Composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0128] The present invention is specifically described based on examples, but the present invention is not limited to them.

[0129] Various chemicals used in the production examples are described below.

[0130] Ion-exchanged water: manufactured by our company

[0131] Potassium abietate soap: manufactured by Harima Chemicals, Inc.

[0132] Fatty acid sodium soap: manufactured by Wako Pure Chemical Industries, Ltd.

[0133] Potassium chloride: manufactured by Wako Pure Chemical Industries, Ltd.

[0134] Sodium naphthalenesulfonate formaldehyde condensate: manufactured by Kao Co., Ltd.

[0135] 1,3-butadiene: 1,3-butadiene manufactured by Takachiho Shoji Co., Ltd.

[0136] Styrene: Styrene manufactured by Wako Pure Chemical Industries, Ltd. (compound represented by formula (2))

[0137] Tert-dodecyl mercaptan: tert-dodecyl mercaptan (chain transfer agent) manufactured by Wako Pure Chemical Industries, Ltd.

[0138] Si363: 3-[ethoxybis(3,6,9,12,15-pentoxaoctadecyl-1-yloxy...

manufacture example 1

[0155] A stainless steel polymerization reactor with an internal volume of 50 liters was washed, dried, and replaced with dry nitrogen, and then 3,500 g of 1,3-butadiene, 1,500 g of styrene, 5.74 g of t-dodecyl mercaptan, and the above-mentioned emulsifier were added. 9688g, sodium hydrosulfide 6.3ml (1.8M), active agent (FeSO 4 / EDTA / rongalit) and 6.3 ml (2.3 M) of the polymerization initiator were polymerized at 10° C. for 3 hours while stirring. After the polymerization, add 2.9g of N,N-diethylhydroxylamine, carry out the reaction for 30 minutes and take out the contents of the polymerization reaction vessel, add 10g of 2,6-di-tert-butyl-p-cresol, and evaporate most of the water , and then dried under reduced pressure at 55°C for 12 hours to obtain Copolymer 1.

manufacture example 2

[0157] The copolymer 2 was obtained by the same method except having changed 1,500 g of styrene in the said manufacture example 1 into 1,500 g of diethyl fumarate.

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Abstract

Provided are a rubber composition that shows a balanced improvement in fuel economy, abrasion resistance, and wet grip performance while having good processability, and a pneumatic tire including a tread formed from the rubber composition. The present invention relates to the rubber composition containing: a copolymer synthesized by copolymerizing a conjugated diene monomer and a compound represented by the formula (1) below; and carbon black and / or silica, wherein R 1 and R 2 are the same or different and each represent a hydrogen atom or a C1-C30 hydrocarbon group.

Description

technical field [0001] The present invention relates to a rubber composition and a pneumatic tire having a tread manufactured using the rubber composition. Background technique [0002] Tire treads are mainly required to provide performance such as low fuel consumption, wear resistance, and wet grip performance at high levels, and various methods of improving these performances are being studied. [0003] For example, as a method of improving low fuel consumption, it is known to introduce a functional group having an affinity with a filler at the end of the polymer, and as a method of improving abrasion resistance, it is known to use a high-molecular-weight polymer with a molecular weight of 250,000 or more. As a method for improving wet grip performance, it is known to use a polymer having a high glass transition temperature (Tg). [0004] However, even with the method of introducing a functional group having affinity with the filler, the method of using a high-molecular-w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/00C08L9/06C08L91/06C08K3/04C08K3/36C08K13/02C08F236/06C08F222/14C08F212/08B60C1/00
CPCB60C1/0016C08F236/06C08L9/00C08L9/06C08L91/06C08K3/04C08K3/36C08K13/02C08F222/14C08F212/08C08F236/08
Inventor 森健次端场俊文
Owner SUMITOMO RUBBER IND LTD
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