Title:
RUBBER COMPOSITION FOR HEAVY DUTY TIRE, AND PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP2018150531
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a rubber composition for a heavy duty tire which is excellent in low heat build-up properties, wear resistance, and wet grip performance when formed into a tire, and to provide a pneumatic tire using the rubber composition for a heavy duty tire.SOLUTION: The rubber composition for a heavy duty tire contains a diene rubber (A), an ester compound (B), and a white filler (C). The ester compound (B) is an ester compound selected from a polyoxyethylene alkyl ether phosphate and the like. The diene rubber (A) has an average glass transition temperature of less than -50°C. The diene rubber (A) contains 50 mass% or more of an isoprene rubber. The content of the ester compound (B) is 0.5-45 pts.mass based on 100 pts.mass of the white filler (C). The content of the white filler (C) is 5-80 pts.mass based on 100 pts.mass of the diene rubber (A). The rubber composition for a heavy duty tire has a type A rubber hardness specified by JIS of 55 or more at a temperature of 0°C after curing.SELECTED DRAWING: None
Inventors:
KAZARIYA AYAKI
ASHIURA MAKOTO
MIHARA SATOSHI
KIMURA KAZUTOSHI
KAGEYAMA YUICHI
ASHIURA MAKOTO
MIHARA SATOSHI
KIMURA KAZUTOSHI
KAGEYAMA YUICHI
Application Number:
JP2018045762A
Publication Date:
September 27, 2018
Filing Date:
March 13, 2018
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD
International Classes:
C08L9/00; B60C1/00; C08K3/00; C08K5/3462; C08K5/521; C08K5/5419; C08L7/00
Domestic Patent References:
| JP2015218254A | 2015-12-07 | |||
| JP2011122123A | 2011-06-23 |
Foreign References:
| WO2013168424A1 | 2013-11-14 |
Attorney, Agent or Firm:
Nozomi Watanabe
Haruko Sanwa
Hideaki Ito
Fumio Mitsuhashi
Haruko Sanwa
Hideaki Ito
Fumio Mitsuhashi