High performance tire

A high-performance tire technology, applied in special tires, tire parts, transportation and packaging, etc., can solve problems such as poor compatibility and unstable performance of vulcanized rubber, and achieve improved balance between wear resistance and processability, and grip performance and wear resistance balance improvement effect

Active Publication Date: 2017-09-15
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that if the difference in styrene content between styrene-butadiene rubbers increases, their compatibility with each other is poor, and the resulting vulcanized rubber exhibits unstable properties
However, this technology has room for improvement in achieving a balanced improvement in grip performance, wear resistance, and processability

Method used

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Examples

Experimental program
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Embodiment

[0134] The present invention is specifically described by reference to, but not limited to, the following examples.

[0135] Chemicals used in Examples and Comparative Examples are listed below.

[0136] SBR1: Tufdene 4850 (S-SBR, styrene content: 40% by mass, oil content per 100 parts by mass of rubber solids: 50 parts by mass, Mw: 11.3×10 5 ), purchased from Asahi Kasei Corporation

[0137] SBR2: Y031 (S-SBR, styrene content: 27% by mass, oil content per 100 parts by mass of rubber solids: 0 parts by mass, Mw: 4.48×105 ), purchased from Asahi Kasei Corporation

[0138] Carbon black: N219 (N 2 SA: 106m 2 / g, OAN: 75mL / 100g), purchased from Cabot Japan Co.

[0139] Oil: Diana Process AH-24 (aromatic process oil), purchased from Idemitsu Corson Co., Ltd.

[0140] Liquid diene copolymer: RICON 100 (liquid SBR, styrene content: 25% by mass, Mw: 4500), purchased from Sartomer

[0141] Hydrogenated liquid diene copolymer: partially hydrogenated product of RICON 100, purchased...

manufacture example 1

[0153] (Preparation of hydrogenated liquid SBR)

[0154] Into a 3 L autoclave with a stirrer, 80 g of "RICON 100 (liquid SBR)" and 5 g of 10% palladium carbon (available from Tokyo Chemical Industry Co., Ltd.) were charged. Then, the autoclave was purged with nitrogen, followed by hydrogen to obtain 5.0 kg / cm 2 pressure, and then hydrogenated at 80°C to obtain hydrogenated liquid SBR.

[0155]

[0156] According to the formulation shown in Table 1, materials other than sulfur and vulcanization accelerator were kneaded with a 1.7L Banbury mixer (available from Kobe Steel Co., Ltd.). Sulfur and a vulcanization accelerator were added to the kneaded mixture, and they were kneaded with an open roll to obtain an unvulcanized rubber composition. The unvulcanized rubber composition was molded into the shape of a tread, assembled with other tire components on a tire building machine, and then vulcanized at 150° C. for 30 minutes to obtain a test tire (tire size: 215 / 45R17).

[015...

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Abstract

Provided is a high performance tire including a tread formed from a rubber composition which achieves a balanced improvement in grip performance, abrasion resistance, and processability. The present invention relates to a high performance tire including a tread formed from a rubber composition, the rubber composition containing: a rubber component including a styrene-butadiene copolymer (1); a styrene-butadiene copolymer (2); and a hydrogenated terpene aromatic resin, the styrene-butadiene copolymer (1) and the styrene-butadiene copolymer (2) differing in styrene content by 10% by mass or more.

Description

technical field [0001] The present invention relates to a high performance tire comprising a tread formed from a rubber composition. Background technique [0002] Treads for high-performance tires need to have grip and durability. In particular, a well-balanced tread exhibiting excellent grip performance and excellent durability (abrasion resistance), especially on dry road surfaces, is strongly demanded. [0003] Various efforts have been made to secure or improve these properties. In particular, a widely known technique for improving grip performance is to use styrene-butadiene rubber whose styrene content is increased as a main component polymer (rubber component) or to add a liquid polymer. [0004] Unfortunately, however, treads containing styrene-butadiene rubber with increased styrene content as the main constituent polymer (rubber component) show increased temperature dependence, which may cause grip at the initial running Deterioration of performance or deteriora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08L45/00C08K13/02C08K3/04C08K5/09B60C1/00
CPCB60C1/0016C08L9/06C08L2205/025C08L2205/035C08L45/00C08K13/02C08K3/04C08K5/09C08L93/00C08L2205/03
Inventor 中岛郭葵宫崎达也
Owner SUMITOMO RUBBER IND LTD
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