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Tire

一种轮胎、胎面的技术，应用在特殊轮胎、轮胎零部件、运输和包装等方向，能够解决未考虑乙烯苯乙烯组成比等问题

Active Publication Date: 2019-09-10
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent document does not consider the compositional ratio of ethylene, propylene and styrene

Method used

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  • Tire

Examples

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Embodiment

[0045] The present invention will be described with reference to examples, but the present invention is not limited to these examples.

[0046] Various chemicals used in Examples and Comparative Examples will be described below.

[0047] NR:TSR20

[0048] SBR: S-SBR manufactured by JSR Corporation (modified S-SBR having active carbon atom ends, styrene content: 10% by mass)

[0049] Carbon black: DIABLACK I (N) manufactured by Mitsubishi Chemical Corporation 2 SA: 114m 2 / g, DBP oil absorption: 114ml / 100g)

[0050] Copolymer 1: Promix 400 manufactured by Flow Polymers

[0051] Copolymer 2: STRUKTOL 40MS manufactured by Struktol

[0052] Copolymer 3: Rhenosin 145A / P manufactured by Rhein Chemie

[0053] Wax: Ozoace-0355 manufactured by Nippon Seika Co., Ltd.

[0054] Antioxidant: NOCRAC 224 (TMQ, 2,2,4-trimethyl-1,2-dihydroquinoline polymer) manufactured by Ouchi Shinko Chemical Industry Co., Ltd.

[0055] Stearic acid: stearic acid manufactured by NOF CORPORATION, Kao ...

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Abstract

The present invention pertains to a tire having a tread composed of a rubber composition which contains 1-20 parts by mass of an ethylene-propylene-styrene copolymer and 3-100 parts by mass of carbonblack with respect to 100 parts by mass of rubber components, the ethylene-propylene-styrene copolymer having a composition of 10-60 mass% of ethylene, 10-60 mass% of propylene, and 5-40 mass% of styrene. According to the present invention, a tire having a tread which is composed of a rubber composition and has excellent chipping resistance can be provided.

Description

technical field [0001] The present invention relates to a tire having a tread made of a rubber composition containing a predetermined ethylene-propylene-styrene copolymer. Background technique [0002] Conventionally, for the purpose of improving the dispersibility of carbon black in rubber components, the particle size and kneading method of carbon black have been studied. However, sufficient dispersibility has not been obtained, and improvement of dispersibility is required. [0003] JP2014-218566A describes an ethylene-propylene-styrene copolymer as one example of a mixed resin blended as a processing aid. However, this patent document does not consider the composition ratio of ethylene, propylene and styrene. [0004] In addition, it is desired that a rubber composition for a tread as a component of a tire tread is excellent in fuel economy, grip, handling stability, and chipping resistance (tensile strength). [0005] prior art literature [0006] patent documents ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L21/00B60C1/00C08K3/04C08L25/08
CPCC08K3/04C08L21/00C08L25/08C08L9/06B60C1/0016Y02T10/86C08L7/00
Inventor 河西勇辉大槻洋敏
Owner SUMITOMO RUBBER IND LTD
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