Title:
PNEUMATIC TIRE FOR HEAVY LOADS
Document Type and Number:
WIPO Patent Application WO/2012/133426
Kind Code:
A3
Abstract:
Provided is a pneumatic tire for heavy loads that both suppresses uneven wear and improves durability with respect to cracking of tire siping and block chipping. The pneumatic tire is characterized in that a tread part is formed by a rubber composition containing 30-70 pbw of carbon black, 1.0-10.0 pbw of a thermosetting resin, and 0.5-10.0 pbw of a curing agent with respect to 100 pbw of at least one type of diene rubber selected from natural rubber, polyisoprene rubber, and polybutadiene rubber, wherein the carbon black has a nitrogen-adsorption specific surface area of 60m2/g or higher, the thermosetting resin is a cresol resin and/or a resorcinol resin, or a cashew-modified phenolic resin and/or a phenolic resin, and the curing agent is at least one type selected from hexamethylenetetramine, hexamethoxymethylmelamine, and pentamethoxymethylmelamine.
Inventors:
SUZUKI YOHSUKE (JP)
KAWAJIRI RYOTA (JP)
KAWAJIRI RYOTA (JP)
Application Number:
PCT/JP2012/057962
Publication Date:
November 22, 2012
Filing Date:
March 27, 2012
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
SUZUKI YOHSUKE (JP)
KAWAJIRI RYOTA (JP)
SUZUKI YOHSUKE (JP)
KAWAJIRI RYOTA (JP)
International Classes:
C08L9/00; B60C1/00; C08K3/04; C08K5/3492; C08L61/06
Domestic Patent References:
| WO2010021316A1 | 2010-02-25 | |||
| WO2010004928A1 | 2010-01-14 |
Foreign References:
| JP2004231691A | 2004-08-19 |
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (4-5 Tsukiji 1-chom, Chuo-ku Tokyo 45, JP)
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Claims:
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