Rubber composition for tire, and pneumatic tire

Rubber composition for tire, and pneumatic tire

  • CN 104,220,509 A
  • Filed: 04/16/2013
  • Published: 12/17/2014
  • Est. Priority Date: 04/16/2012
  • Status: Active Application
First Claim
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1. a rubber composition for tire, it is characterized in that, relative to 100 weight part diene series rubbers, softening temperature has been coordinated to be that aromatic modified terpine resin 2 ~ 50 weight part, the silicon-dioxide X and silicon-dioxide Y these two kinds of 100 ~ 130 DEG C adds up to 60 ~ 130 weight parts, the vinyl units content that described diene series rubber contains 5 ~ 50 % by weight is terminal-modified divinyl rubber and the modification BR of 10 ~ 60 % by weightSilicon-dioxide relative to comprising described silicon-dioxide X and silicon-dioxide Y and the ratio of the total amount of the enhancement weighting agent of carbon black that coordinates arbitrarily is more than 85 % by weight,The N2 adsorption specific surface area of described silicon-dioxide X is 140m 2/ more than g, The N2 adsorption specific surface area of described silicon-dioxide Y is for being greater than 100m 2/ g and be less than 140m 2/ g, and Relative to diene series rubber described in 100 weight parts, the use level of silicon-dioxide X is set to x weight part, when the use level of silicon-dioxide Y is set to y weight part, meets the relation of x/7<

  • y≤

    x, andThe described functional group of modification BR and the silanol group of silica sphere have reactivity.

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