{
  "$type": "site.standard.document",
  "description": "Provided is a heavy duty tire having improved cut resistance during high-load and high-speed running. Included is a heavy duty tire which includes a sidewall including a sidewall rubber composition, the sidewall rubber composition containing at least one isoprene-based rubber, at least one…",
  "path": "/patents/1411346",
  "publishedAt": "2025-07-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/0025",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "Provided is a heavy duty tire having improved cut resistance during high-load and high-speed running. Included is a heavy duty tire which includes a sidewall including a sidewall rubber composition, the sidewall rubber composition containing at least one isoprene-based rubber, at least one polybutadiene rubber, and at least one oxidized carbon black having an average particle size of 30 nm or less; the sidewall rubber composition containing, based on 100% by mass of the rubber components therein, at least 5% by mass but less than 50% by mass of the at least one polybutadiene rubber; the sidewall rubber composition satisfying the following relationships (1) and (2): (1) Amount of isoprene-based rubber > Amount of polybutadiene rubber wherein \"Amount of isoprene-based rubber\" and \"Amount of polybutadiene rubber\" represent the amounts (% by mass) of the at least one isoprene-based rubber and the at least one polybutadiene rubber, respectively, based on 100% by mass of the rubber components in the sidewall rubber composition; (2) Thickness at widest point > -0.14 x Amount of polybutadiene rubber + 10.0 wherein \"Thickness at widest point\" represents the thickness (mm) of the sidewall at the widest point, and \"Amount of polybutadiene rubber\" represents the amount (% by mass) of the at least one polybutadiene rubber based on 100% by mass of the rubber components in the sidewall rubber composition.",
  "title": "HEAVY DUTY TIRE"
}