Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2020/230560
Kind Code:
A1
Abstract:
Provided is a pneumatic tire that exhibits excellent low fuel consumption, durability, and ozone resistance while having high electric conductivity. This pneumatic tire has a carcass and a sidewall rubber, wherein: the sidewall rubber is obtained by stacking two or more layers of rubber including a sidewall outermost layer rubber on the tire outer surface and a sidewall inner layer rubber on the tire inner surface side relative to the sidewall outermost layer rubber; the thickness of the sidewall inner layer rubber is 0.1-1.2 mm; the mass proportion of an anti-aging agent in the sidewall inner layer rubber is not less than 1.2 mass%; the ratio of the mass proportion of the anti-aging agent in the sidewall inner layer rubber with respect to the mass proportion of an anti-aging agent in the sidewall outermost layer rubber is 0.7-2.0; and E'swout/E'swin is more than 0.57 but less than 1.5.
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Inventors:
MIURA TAKAHIRO (JP)
Application Number:
PCT/JP2020/017376
Publication Date:
November 19, 2020
Filing Date:
April 22, 2020
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B60C1/00; B60C9/04; B60C13/00; C08K3/04; C08K5/00; C08L21/00
Foreign References:
| JP2016041521A | 2016-03-31 | |||
| JP2014218096A | 2014-11-20 | |||
| JP2012153272A | 2012-08-16 | |||
| JP2011173469A | 2011-09-08 | |||
| JP2009220692A | 2009-10-01 | |||
| JP2008308083A | 2008-12-25 | |||
| JP2007331422A | 2007-12-27 | |||
| JP2007008269A | 2007-01-18 | |||
| JP2013226917A | 2013-11-07 |
Other References:
See also references of EP 3970988A4
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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