Title:
ゴム組成物及び空気入りタイヤ
Document Type and Number:
Japanese Patent JP5681575
Kind Code:
B2
Abstract:
Provided are a rubber composition that can improve fuel efficiency and wet grip performance in a well-balanced manner, and a pneumatic tire using the rubber composition in various members (particularly the tread) of the tire. This rubber composition contains: a rubber component containing a copolymer that is obtained by copolymerizing 1,3-butadiene, styrene, and a compound represented by formula (I), the copolymer having an amino group at one end and having, at the other end, a functional group containing at least one type of atom selected from the group consisting of nitrogen, oxygen, and silicon, the copolymer having a weight-average molecular weight of 1.0×105 to 2.5×106; silica; and a liquid resin having a softening point in the range of -20 to 20°C. (In the formula, R1 represents a hydrocarbon group having a carbon number of 1 to 10.)
Inventors:
河地 貴浩
上坂 憲市
上坂 憲市
Application Number:
JP2011142841A
Publication Date:
March 11, 2015
Filing Date:
June 28, 2011
Export Citation:
Assignee:
住友ゴム工業株式会社
International Classes:
C08L21/00; B60C1/00; C08F8/00; C08F212/08; C08F212/14; C08F236/10; C08K3/36; C08L9/06; C08L25/16; C08L45/00
Attorney, Agent or Firm:
Patent business corporation Yasutomi international patent firm