Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2020/246087
Kind Code:
A1
Abstract:
A pneumatic tire according to the present invention which has a tread comprising a cap tread and a base tread, wherein: the cap tread comprises a rubber composition which contains 30-120 parts by mass of silica which has a BET specific surface area of 180-280m2/g relative to 100 parts by mass of a rubber component which contains at least 10 mass% and less than 30 mass% of natural rubber; and formula (1) 150≤C/B×100≤900 (in the formula, C is the proportion (mass%) of the mass of the cap tread relative to the mass of the tread overall, and B represents the proportion (mass%) of the mass of the base tread relative to the mass of the tread overall) is satisfied, which makes it possible to provide a pneumatic tire which achieves an excellent balance between fuel economy performance, wear resistance and formability/workability.
Inventors:
TSUCHIDA TSUYOSHI (JP)
Application Number:
PCT/JP2020/009187
Publication Date:
December 10, 2020
Filing Date:
March 04, 2020
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
B60C1/00; B60C11/00; C08K3/36; C08K5/548; C08L7/00; C08L21/00
Domestic Patent References:
WO2013058390A1 | 2013-04-25 | |||
WO2012141158A1 | 2012-10-18 | |||
WO2018104671A1 | 2018-06-14 |
Foreign References:
JP2013177113A | 2013-09-09 | |||
JP2000016010A | 2000-01-18 | |||
JP2007506589A | 2007-03-22 | |||
JP2006062518A | 2006-03-09 | |||
JP2015124310A | 2015-07-06 | |||
JP2015124365A | 2015-07-06 | |||
JP2011132373A | 2011-07-07 | |||
JP2011144239A | 2011-07-28 | |||
JPH10175403A | 1998-06-30 | |||
JP2015129238A | 2015-07-16 | |||
JP2011046299A | 2011-03-10 | |||
JP2009001672A | 2009-01-08 | |||
US6247512B1 | 2001-06-19 | |||
JP2011001521A | 2011-01-06 | |||
JP2013177113A | 2013-09-09 | |||
JP2010138359A | 2010-06-24 | |||
JP2010174169A | 2010-08-12 |
Other References:
See also references of EP 3970990A4
Attorney, Agent or Firm:
ASAHINA & CO. (JP)
Download PDF: