Title:
RUBBER COMPOSITION FOR TIRE RIM CUSHION OR RUBBER FINISHING, AND PNEUMATIC TIRE USING SAME
Document Type and Number:
WIPO Patent Application WO/2014/020909
Kind Code:
A1
Abstract:
A composition obtained by blending 55 to 75 parts by mass of a carbon black (1) for which the nitrogen adsorption specific surface area is 35 to less than 50 m2/g and 5 to 20 parts by mass of a carbon black (2) for which the nitrogen adsorption specific surface area is 50 to 95 m2/g, the total of the carbon blacks (1) and (2) being 60 to 95 parts by mass, into 100 parts by mass of a rubber component comprising: 30 to 70 mass% of a butadiene rubber for which the cis-1,4 bond content is 97% or higher, the Mooney viscosity (ML1+4) at 100°C is 45 or higher, and (T-cp)/(ML1+4), which is the ratio of the 5 mass% toluene solution viscosity (T-cp) [cps] at 25°C in relation to the Mooney viscosity is 2.0 or higher; and 30 to 70 mass% of another diene-based rubber.
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Inventors:
WADA TOMOYUKI (JP)
Application Number:
PCT/JP2013/004626
Publication Date:
February 06, 2014
Filing Date:
July 31, 2013
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
C08L9/00; B60C1/00; B60C15/06; C08K3/04; C08L21/00
Domestic Patent References:
| WO2012144200A1 | 2012-10-26 |
Foreign References:
| JP2012031304A | 2012-02-16 | |||
| JPH0680823A | 1994-03-22 | |||
| JP2011046299A | 2011-03-10 | |||
| JP2006063287A | 2006-03-09 | |||
| JP2008273519A | 2008-11-13 | |||
| JP2006056978A | 2006-03-02 | |||
| JP2008138080A | 2008-06-19 |
Attorney, Agent or Firm:
NODA, SHIGERU (JP)
Noda 茂 (JP)
Noda 茂 (JP)
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