×

RUBBER COMPOSITION FOR USE IN TIRES

  • US 20140155520A1
  • Filed: 07/13/2012
  • Published: 06/05/2014
  • Est. Priority Date: 07/14/2011
  • Status: Active Grant
First Claim
Patent Images

1. A rubber composition for use in tires comprising from 2 to 50 parts by weight of an aromatic modified terpene resin having a softening point of 100°

  • C. or higher, and two types of silica, including a silica X and a silica Y, at a total quantity of 60 to 130 parts by weight relative to 100 parts by weight of a diene rubber containing from 5 to 50 weight % of a solution polymerization-produced terminally modified styrene-butadiene rubber (a modified S-SBR) having a vinyl unit content of not lower than 60 weight %, wherein a functional group in the modified S-SBR reacts with a silanol group on a surface of the silica, a proportion of silica relative to a total quantity of a reinforcing filler containing the silica and carbon black is not lower than 85 weight %, a nitrogen specific surface area of the silica X is not lower than 140 m2/g, a nitrogen specific surface area of the silica Y is not lower than 100 m2/g but lower than 140 m2/g, and where blending quantities of the silica X and the silica Y relative to 100 parts by weight of the diene rubber are deemed to be x parts by weight and y parts by weight respectively, the relationship x/7<

    y≦

    x is satisfied.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×