Title:
RUBBER COMPOSITIONS AND TIRES
Document Type and Number:
WIPO Patent Application WO/2010/055919
Kind Code:
A1
Abstract:
The rubber compositions comprise natural rubber and a reinforcing filler made of carbon black or carbon black and silica, and the product of the specific surface area expressed as the specific surface area of the filler to which cetyltrimethylammonium bromide is adsorbed (CTAB: m2/g), and the parts by mass of the filler B (phr) per 100 parts by mass of the natural rubber component satisfies equation (1) relative to the rebound resilience of the rubber composition. A master batch, obtained from natural rubber latex and carbon black, and a polar group-containing modified natural rubber are preferably used for the natural rubber component. Blending of agents that confer low heat build-up and processing to improve low heat build-up or abrasion resistance are also performed. (1) Rebound resistance > -0.0019 x A + 77.5 Herein, A = CTAB x B
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Inventors:
MAMIYA MOTOYUKI (JP)
Application Number:
PCT/JP2009/069376
Publication Date:
May 20, 2010
Filing Date:
November 13, 2009
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
MAMIYA MOTOYUKI (JP)
MAMIYA MOTOYUKI (JP)
International Classes:
C08L7/00; B60C1/00; C08K3/04; C08K3/36; C08K5/16
Domestic Patent References:
| WO2008142926A1 | 2008-11-27 |
Foreign References:
| JP2004217726A | 2004-08-05 | |||
| JP2007291205A | 2007-11-08 | |||
| JP2007308609A | 2007-11-29 | |||
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| JP2007326990A | 2007-12-20 | |||
| JPS6082406A | 1985-05-10 | |||
| JPS60215402A | 1985-10-28 | |||
| JP2007224074A | 2007-09-06 | |||
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| JP2005272734A | 2005-10-06 |
Attorney, Agent or Firm:
FUJIMOTO Eisuke et al. (JP)
Eisuke Fujimoto (JP)
Eisuke Fujimoto (JP)
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